Add 2020 source files for real

2020-12-31 18:34:17 -08:00
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+#!/usr/bin/env make
+#
+# 2020 makefile
+#
+# This work by Landon Curt Noll, Simon Cooper, and Leonid A. Broukhis
+# is licensed under:
+#
+#	Creative Commons Attribution-ShareAlike 3.0 Unported License.
+#
+# See: http://creativecommons.org/licenses/by-sa/3.0/
+
+#############################
+# shell used by this Makefile
+#############################
+#
+SHELL= /bin/bash
+
+#######################
+# common tool locations
+#######################
+#
+A2P= a2p
+AR= ar
+ASA= asa
+AT= at
+ATQ= atq
+ATRM= atrm
+AWK= awk
+BANNER= banner
+BASE64= base64
+BASENAME= basename
+BATCH= batch
+BC= bc
+BINHEX= binhex
+BISON= bison
+BUNZIP2= bunzip2
+BZCAT= bzcat
+BZCMP= bzcmp
+BZDIFF= bzdiff
+BZEGREP= bzegrep
+BZFGREP= bzfgrep
+BZGREP= bzgrep
+BZIP2= bzip2
+BZLESS= bzless
+BZMORE= bzmore
+C2PH= c2ph
+C89= c89
+C99= c99
+CAL= cal
+CALC= calc
+CAT= cat
+CD= cd
+CHFLAGS= chflags
+CHGRP= chgrp
+CHMOD= chmod
+CKSUM= cksum
+CLANG= clang
+CLANG_PLUSPLUS= clang++
+CLEAR= clear
+CMP= cmp
+COL= col
+COLLDEF= colldef
+COLRM= colrm
+COLUMN= column
+COMPRESS= compress
+CP= cp
+CPIO= cpio
+CPP= cpp
+CRC32= crc32
+CSH= csh
+CSPLIT= csplit
+CURL= curl
+CUT= cut
+C_PLUSPLUS= c++
+C_PLUSPLUS_FILT= c++filt
+DATE= date
+DC= dc
+DD= dd
+DF= df
+DIFF3= diff3
+DIFF= diff
+DIG= dig
+DIRNAME= dirname
+ECHO= echo
+ED= ed
+EGREP= egrep
+ENV= env
+EQN= eqn
+ETAGS= etags
+EXPECT= expect
+EXPR= expr
+FALSE= false
+FGREP= fgrep
+FILE= file
+FIND2PERL= find2perl
+FIND= find
+FLEX= flex
+FLEX_PLUSPLUS= flex++
+FMT= fmt
+FOLD= fold
+FS_USAGE= fs_usage
+FUNZIP= funzip
+FUSER= fuser
+GCC= gcc
+GDIFFMK= gdiffmk
+GENCAT= gencat
+GENSTRINGS= genstrings
+GETOPT= getopt
+GETOPTS= getopts
+GINDENT= gindent
+GNUMAKE= gnumake
+GREP= grep
+GROFF= groff
+GROFFER= groffer
+GROG= grog
+GROPS= grops
+GROTTY= grotty
+GUNZIP= gunzip
+GVIM= gvim
+GZCAT= gzcat
+GZEXE= gzexe
+GZIP_PROG= gzip
+G_PLUSPLUS= g++
+H2PH= h2ph
+H2XS= h2xs
+HASH= hash
+HEAD= head
+HOSTNAME_PROG= hostname
+ICONV= iconv
+ID= id
+INDENT= indent
+INFO= info
+JOT= jot
+KILL= kill
+KSH= ksh
+LAST= last
+LD= ld
+LESSECHO= lessecho
+LEX= len
+LINK= link
+LN= ln
+LS= ls
+M4= m4
+MAKE= make
+MAN= man
+MKDIR= mkdir
+MKFIFo= mkfifo
+MKTEMP= mktemp
+MV= mv
+NANO= nano
+NASM= nasm
+NEQN= neqn
+NICE= nice
+NL= nl
+NM= nm
+NOHUP= nohup
+NROFF= nroff
+NSLOOKUP= nslookup
+OD= od
+OPENSSL= openssl
+PASTE= paste
+PATCH= patch
+PATHCHK= pathchk
+PAX= pax
+PERL= perl
+PICO= pico
+PR= pr
+PRINTENV= printenv
+PS= ps
+PTAR= ptar
+PTARDIFF= ptardiff
+PTARGREP= ptargrep
+PWD= pwd
+PYDOC= pydoc
+PYTHON= python
+PYTHONW= pythonw
+READLINK= readlink
+RENICE= renice
+RESET= reset
+REV= rev
+RI= ri
+RM= rm
+RMDIR= rmdir
+RSYNC= rsync
+RUBY= ruby
+RVIM= rvim
+SAY= say
+SCP= scp
+SCREEN= screen
+SCRIPT= script
+SDIFF= sdiff
+SED= sed
+SEQ= seq
+SFTP= sftp
+SH= sh
+SHA1= sha1
+SHA= sha
+SHAR= shar
+SHASUM5_18= shasum5.18
+SHASUM= shasum
+SIZE= size
+SLEEP= sleep
+SORT= sort
+SSH= ssh
+STAT= stat
+STRIP= strip
+STTY= stty
+SUM= sum
+SYNC= sync
+TABS= tabs
+TAIL= tail
+TAR= tar
+TEE= tee
+TEST= test
+TFTP= tftp
+TIDY= tidy
+TIME= time
+TOP= top
+TOUCH= touch
+TPUT= tout
+TPUT= tput
+TR= tr
+TROFF= troff
+TRUE= true
+TSET= tset
+TSORT= tsort
+UL= ul
+UNAME= uname
+UNCOMPRESS= uncompress
+UNEXPAND= unexpand
+UNIFDEF= unifdef
+UNIFDEFALL= unifdefall
+UNIQ= uniq
+UNITS= units
+UNLINK= unlink
+UNZIP= unzip
+UNZIPSFX= unzipsfx
+UPTIME= uptime
+UUDECODE= uudecode
+UUENCODE= uuencode
+UUIDGEN= uuidgen
+VI= vi
+VIEW= view
+VIM= vim
+VIMDIFF= vimdiff
+W= w
+WAIT4PATH= wait4path
+WAIT= wait
+WC= wc
+WHAT= what
+WHATIS= whatis
+WHICH= which
+WHO= who
+WHOAMI= whoami
+WHOIS= whois
+WRTIE= write
+XAR= xar
+XARGS= xargs
+XATTR= xattr
+XXD= xxd
+YACC= yacc
+YES= yes
+ZCAT= zcat
+ZCMP= zcmp
+ZDIFF= zdiff
+ZEGREP= zegrep
+ZFGREP= zfgrep
+ZFORCE= zforce
+ZGREP= zgrep
+ZIP= zip
+ZIPCLOAK= zipcloak
+ZIPGREp= zipgrep
+ZIPINFo= zipinfo
+ZIPNOTE= zipnote
+ZIPSPLIT= zipsplit
+ZLESS= zless
+ZMORE= zmore
+ZNEW= znew
+ZPRINT= zprint
+ZSH= zsh
+
+# Set X11_LIBDIR to the directory where the X11 library resides
+#
+#X11_LIBDIR= /usr/X11R6/lib
+#X11_LIBDIR= /usr/X11/lib
+X11_LIBDIR= /opt/X11/lib
+
+# Set X11_INCLUDEDIR to the directory where the X11 include files reside
+#
+#X11_INCDIR= /usr/X11R6/include
+#X11_INCDIR= /usr/X11/include
+X11_INCDIR= /opt/X11/include
+
+# CWARN - Silence warnings that ${CWARN} would normally complain about
+# CSILENCE -Compiler warnings
+#
+ifeq ($(CC),clang)
+
+# clang CSILENCE and CWARN
+#
+#CSILENCE=
+#CSILENCE= -Wno-implicit-int
+CSILENCE= -Wno-missing-variable-declarations -Wno-shorten-64-to-32 -Wno-comma -Wno-shadow \
+	  -Wno-missing-prototypes -Wno-sign-conversion -Wno-implicit-int-conversion \
+	  -Wno-conversion -Wno-unknown-warning-option
+#
+#CWARN= $CSILENCE}
+#CWARN= -Wall $CSILENCE}
+#CWARN= -Wall -Wextra $CSILENCE}
+#CWARN= -Wall -Wextra -pedantic ${CSILENCE}
+#CWARN= -Wall -Wextra -Weverything $CSILENCE}
+CWARN= -Wall -Wextra -Weverything -pedantic ${CSILENCE}
+
+else
+ifeq ($(CC),gcc)
+
+# gcc CSILENCE and CWARN
+#
+#CSILENCE=
+#CSILENCE= -Wno-implicit-int
+CSILENCE= -Wno-misleading-indentation -Wno-unknown-warning-option
+#
+#CWARN= $CSILENCE}
+#CWARN= -Wall $CSILENCE}
+#CWARN= -Wall -Wextra $CSILENCE}
+CWARN= -Wall -Wextra -pedantic ${CSILENCE}
+
+else
+
+# default CSILENCE and WARN
+#
+CSILENCE= -Wno-misleading-indentation -Wno-unknown-warning-option
+#CSILENCE= -Wno-implicit-int
+#
+#CWARN= $CSILENCE}
+#CWARN= -Wall $CSILENCE}
+#CWARN= -Wall -Wextra $CSILENCE}
+CWARN= -Wall -Wextra -pedantic ${CSILENCE}
+#CWARN= -Wall -Wextra -Weverything $CSILENCE}
+#CWARN= -Wall -Wextra -Weverything -pedantic ${CSILENCE}
+
+endif
+endif
+
+# compiler standard
+#
+#CSTD=
+#CSTD= -ansi
+CSTD= -std=c11
+
+# compiler bit architecture
+#
+# Some entries require 32-bitness:
+# ARCH= -m32
+#
+# Some entries require 64-bitness:
+# ARCH= -m64
+#
+# By default we assume nothing:
+#
+ARCH=
+
+# defines that are needed to compile
+#
+CDEFINE=
+#CDEFINE= -DIOCCC
+
+# include files that are needed to compile
+#
+CINCLUDE=
+#CINCLUDE= -include stdlib.h
+#CINCLUDE= -include stdio.h
+#CINCLUDE= -include stdlib.h -include stdio.h
+#CINCLUDE= -I ${X11_INCDIR}
+
+# optimization
+#
+# Most compiles will safely use -O2.  Some can use only -O1 or -O.
+# A few compilers have broken optimizers or this entry make break
+# under those buggy optimizers and thus you may not want anything.
+# Reasonable compilers will allow for -O3.
+#
+#OPT=
+#OPT= -O
+#OPT= -O1
+#OPT= -O2
+OPT= -O3
+
+# default flags for ANSI C compilation
+#
+CFLAGS= ${CSTD} ${CWARN} ${ARCH} ${CDEFINE} ${CINCLUDE} ${OPT}
+
+# Libraries needed to build
+#
+#LIBS=
+#LIBS= -L ${X11_LIBDIR}
+LIBS= -lcurses
+
+# ANSI compiler
+#
+# Set CC to the name of your ANSI compiler.
+#
+# Some entries seem to need gcc.  If you have gcc, set
+# both CC and MAY_NEED_GCC to gcc.
+#
+# If you do not have gcc, set CC to the name of your ANSI compiler, and
+# set MAY_NEED_GCC to either ${CC} (and hope for the best) or to just :
+# to disable such programs.
+#
+CC= cc
+#CC= clang
+MAY_NEED_GCC= gcc
+
+
+##############################
+# Special flags for this entry
+##############################
+#
+OBJ= prog.o
+DATA= ioccc.txt unwinnable.txt
+TARGET= prog
+#
+ALT_OBJ=
+ALT_TARGET=
+
+
+#################
+# build the entry
+#################
+#
+all: ${TARGET} ${DATA}
+	@${TRUE}
+
+prog: prog.c
+	${CC} ${CFLAGS} $< -o $@ ${LIBS}
+
+# alternative executable
+#
+alt: ${ALT_TARGET}
+	@${TRUE}
+
+# data files
+#
+data: ${DATA}
+	@${TRUE}
+
+
+###############
+# utility rules
+###############
+#
+everything: all alt
+
+clean:
+	${RM} -f ${OBJ} ${ALT_OBJ}
+	@-if [ -f indent.c ]; then \
+	    ${ECHO} ${RM} -f indent.c; \
+	    ${RM} -f indent.c; \
+	fi
+
+clobber: clean
+	${RM} -f ${TARGET} ${ALT_TARGET}
+	@-if [ -e sandwich ]; then \
+	    ${RM} -f sandwich; \
+	    ${ECHO} 'ate sandwich'; \
+	fi
+
+nuke: clobber
+	@${TRUE}
+
+dist_clean: nuke
+	@${TRUE}
+
+install:
+	@${ECHO} "Surely you are performing, Dr. Science!"
+	@${TRUE}
+
+# backwards compatibility
+#
+build: all
+	@${TRUE}
+
+# you may be able to mis-understand the source by reading indent.c
+#
+indent.c: prog.c
+	@if which "${GINDENT}" >/dev/null 2>&1; then \
+	    ${ECHO} ${RM} -f $@; \
+	    ${RM} -f $@; \
+	    ${ECHO} "${GINDENT} < $< > $@"; \
+	    ${GINDENT} < $< > $@; \
+	elif which "${INDENT}" >/dev/null 2>&1; then \
+	    ${ECHO} ${RM} -f $@; \
+	    ${RM} -f $@; \
+	    ${ECHO} "${INDENT} < $< > $@"; \
+	    ${INDENT} < $< > $@; \
+	else \
+	    ${ECHO} "no intent prog found, ident $< yourself, sorry"; \
+	    ${ECHO} "exit 1"; \
+	    exit 1; \
+	fi
+
+
+##################
+# 133t hacker rulz
+##################
+#
+love:
+	@${ECHO} 'not war?'
+	@${TRUE}
+
+haste:
+	$(MAKE) waste
+	@${TRUE}
+
+waste:
+	@${ECHO} 'haste'
+	@${TRUE}
+
+make:
+	@${ECHO} 'We encourage you to attend a maker faire'
+	@${TRUE}
+
+easter_egg:
+	@${ECHO} you expected to often mis-understand this $${RANDOM} magic
+	@${ECHO} chongo '<was here>' "/\\oo/\\"
+	@${ECHO} Eggy and Kitty
+
+fabricate fashion form frame manufacture produce: make
+	@${TRUE}
+
+sandwich:
+	@if [ `id -u` -eq 0 ]; then \
+	    ${ECHO} 'Okay.'; \
+	    ${ECHO} $${RANDOM}`date +%s`$${RANDOM} | \
+	      ${SHASUM} -a 512256 | \
+	      ${SED} -e 's/ .*//' > $@; \
+	else \
+	    ${ECHO} 'Reall?!? Make it yourself.'; \
+	    exit 1; \
+	fi
+
+# Understand the history of the Homebrew Computer Club
+# as well as the West Coast Computer Faire and
+# you might be confused different.  :-)
+#
+supernova: nuke
+	@-if [ -r .code_anal ]; then \
+	    ${RM} -f .code_anal_v6; \
+	else \
+	    ${ECHO} "planet deniers, like a few silly IAU members, are so cute when they try to defend their logic"; \
+	fi
+	@${ECHO} A $@ helps ${MAKE} the elements that help form planets
+	@${TRUE}
+
+deep_magic:
+	@-if [ -r .code_anal ]; then \
+	    ccode_analysis --deep_magic 253d8c80830e2df66c018820004b3d4939821bbd7d781fc50d9e633797e44f65d1d62c707bb7e5a82c328a37bbf9ecb4c46fb56aa3f08641fcf45d10ba3c6081 --FNV1a_hash_512_bit "prog"; \
+	else \
+	    ${ECHO} "Wrong! Do it again!"; \
+	    sleep 1; \
+	    ${ECHO} "Wrong! Do it again!"; \
+	    sleep 1; \
+	    ${ECHO} "Wrong! Do it again!"; \
+	fi
+	@${TRUE}
+
+magic: deep_magic
+	@-if [ -r .code_anal ]; then \
+	    ccode_analysis --level 391581 --mode 216193 --state Riesel --FNV1a_hash_512_bit "prog"; \
+	else \
+	    ${ECHO} "If you don't eat yer meat, you can't have any pudding!"; \
+	    ${ECHO} "How can you have any pudding if you don't eat yer meat?!"; \
+	    ${ECHO} "p.s. Be cafeful with that axe, Eugene."; \
+	fi
+	@${TRUE}
+
+# The IOCCC resident astronomer states
+#
+charon: supernova
+	@${ECHO} $@ is a dwarf planet
+	@${ECHO} dwarf is a type of planet
+	@${ECHO} therefore we continue to tell the IAU that $@ is a planet
+
+pluto: supernova
+	${MAKE} charon
+	@${ECHO} $@ is a dwarf planet
+	@${ECHO} dwarf is a type of planet
+	@${ECHO} therefore, $@ is a planet
+	@${ECHO} having lots of planets is good feature because $< can help ${MAKE} a lot of them
@@ -0,0 +1,33 @@
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@@ -0,0 +1,152 @@
+# Most explosive
+
+Yusuke Endoh  
+Twitter: @mametter  
+
+
+The code for this entry can be found in prog.c
+
+## Judges' comments:
+### To use:
+
+    make
+    ./prog
+
+### Try:
+
+    # Try resizing the terminal window before the first click.
+
+    # Try resizing the terminal window after the first click.
+
+    ./prog ioccc.txt
+
+    ./prog unwinnable.txt
+
+### Selected Judges Remarks:
+
+When playing Minesweeper, a misclick might ruin a game, so why not leave the routine to the computer?
+This program automatically uncovers mines according to several rules, and leaves guessing (and applying
+the most straightforward of the rules -- just for fun, perhaps?) to the user.
+
+Try creating your own input files according to the author's remarks. Did you encounter any problems?
+
+The submission was in violation of the "2053" size rule by one character, likely a late typo. It was easy to fix.
+
+
+
+## Author's comments:
+### Semi-automatic Minesweeper
+
+Minesweeper is a game to sweep mines, as you know.  The task consists of two parts:
+
+A) choose a random cell based on your sixth sense
+B) identify a non-mine cell based on logical inference
+
+However, (B) is error-prone, and a waste of time.  You must use a computer to do such a boring task!
+
+This program is a semi-automatic minesweeper which does Part (B) automatically.
+All you have to do is (A).  You can test if you are lucky or not.
+
+#### How to use
+
+It uses ncurses:
+
+    $ gcc -o prog prog.c -lncurses
+    $ ./prog
+
+You will see a terminal-wide field of a minesweeper.  Probe a cell by mouse click.
+If a cell turns out to have a mine (or not), the program determines whether its neighbors have a mine or not, and automatically probes (or flags) the cell.
+
+* `R`: new game (You can also click the smiley face at the top line.)
+* `Q`: quit
+
+#### Internal
+
+The program uses four types of local inference:
+
+#### Rule 1
+
+If the number of a cell is equal to the count of the flagged neighbors, all the unprobed neighbors are probed.
+
+Example:
+
+```
+    ? ? ?      . . .
+    ? 3 ?  =>  . 3 .
+    ! ! !      ! ! !
+```
+
+Note that `?` is a unprobed cell (it is unknown whether the cell has a mine or not); `!` is a flagged cell (it is already known that the cell has a mine); and `.` is a probed cell (it is already known that the cell has no mine).
+
+#### Rule 2
+
+If the number of a cell is equal to the count of the unprobed or flagged neighbors, all the unprobed neighbors are flagged,
+
+Example:
+
+```
+    . ? ?      . ! !
+    . 4 ?  =>  . 4 !
+    . 2 !      . 2 !
+```
+
+#### Rule 3
+
+Consider two number cells A and B.  If A is equal to the difference of B and the count of B's unprobed and flagged neighbors that are not A's neighbors, all A's unprobed neighbors that are not B's neighbors are probed.
+
+Example:
+
+```
+    ? ? ?        . . .
+    ? 1 ? ?  =>  . 1 ? ?
+    ? ? 4 .      . ? 4 .
+      ? . !        ? . !
+```
+
+A and B are probed cells whose numbers are, respectively, 1 and 4.  The count of B's unprobed and flagged neighbors that are not A's neighbors is three (one `!` and two `?`s).  Since A (1) == B (4) - the count (3), the left and top unprobed cells are probed.
+
+#### Rule 4
+
+Consider two number cells A and B.  If B is equal to the difference of A and the count of A's unprobed and flagged neighbors that are not B's neighbors, all A's unprobed neighbors that are not B's neighbors are flagged.
+
+```
+    ? ? ? ?      ! ? ? ?
+    ? 3 1 2  =>  ! 3 1 2
+    2 2 . .      2 2 . .
+```
+
+A and B are probed cells whose numbers are, respectively, 3 and 1.  The count of A's unprobed and flagged neighbors that are not B's neighbors is two (left `?`s).  Since B (1) == A (3) - the count (2), the left unprobed cells are flagged.
+
+#### Note
+
+Interestingly, these complex rules can be integrated to one simple rule.  Analyze the code.
+
+#### One more thing
+
+You can also play with a prepared map.
+
+    $ ./prog ioccc.txt
+
+The format of the text is:
+
+    width height number-of-mines priorities-of-each-cell...
+
+There are mines in a cell whose "priorities-of-each-cell" is less than "number-of-mines".
+(But the mine in the first-clicked cell is removed.)
+
+#### Bug fixes and Credits
+
+The judges pointed out a bug of the original version that I submitted (prog.orig.c).  Because this program does not provide a feature to flag unprobed cells manually, we can do nothing if the number of unprobed cells are equal to the number of mines remaining; unwinnable.txt is an example for such a case.
+Thus, I implemented an additional rule to flag all unprobed cells in such a case into the final version (prog.c).
+
+Ilya Kurdyukov also pointed out a warning "ignoring return value of 'fscanf'" only when "-O3" is used.  So I changed the code a little to pretend to use the return value of fscanf.
+
+Don Yang (omoikane) contributed another example map "megumin.txt" which is the Explosion Arch-Wizard.
+
+-----------------------------------------------------------------------------------------------------
+(c) Copyright 1984-2020, [Leo Broukhis, Simon Cooper, Landon Curt Noll][judges] - All rights reserved
+This work is licensed under a [Creative Commons Attribution-ShareAlike 3.0 Unported License][cc].
+
+[judges]: http://www.ioccc.org/judges.html
+[cc]: http://creativecommons.org/licenses/by-sa/3.0/
+-----------------------------------------------------------------------------------------------------
@@ -0,0 +1,191 @@
+<!doctype html public "-//W3C//DTD HTML 4.0 Transitional //EN">
+<html>
+<head>
+  <meta name="GENERATOR" content="mkd2html 2.2.2">
+  <meta http-equiv="Content-Type"
+        content="text/html; charset=utf-8">  <link rel="stylesheet"
+        type="text/css"
+        href="../hint.css" />
+  <title></title>
+  <title>Most explosive</title>
+</head>
+<body>
+<CENTER>
+    <IMG SRC="/png/ioccc.png" ALT="IOCCC" height=78 width=267>
+    <P><FONT size="6"><I>The International Obfuscated C Code Contest</I></FONT></P>
+    <div id="bar">
+    <ul>
+        <li><a href="../index.html">About the 27th IOCCC</a></li>
+        <li><a href="../whowon.html">27th IOCCC Winners</a></li>
+        <li><a href="/index.html">IOCCC home</a></li>
+        <li><a href="/winners.html">List of All Winners</a></li>
+        <li><a href="/judges.html">The Judges</a></li>
+    </ul>
+    </div>
+    <P><FONT size="6"><B>A 27<sup>th</sup> IOCCC Winner</B></FONT></P>
+</CENTER>
+
+
+<h1>Most explosive</h1>
+
+<p>Yusuke Endoh<br/>
+Twitter: @mametter</p>
+
+<p>The code for this entry can be found in <a href="prog.c">prog.c</a></p>
+
+<h2>Judges' comments:</h2>
+
+<h3>To use:</h3>
+
+<pre><code>make
+./prog
+</code></pre>
+
+<h3>Try:</h3>
+
+<pre><code># Try resizing the terminal window before the first click.
+
+# Try resizing the terminal window after the first click.
+
+./prog ioccc.txt
+
+./prog unwinnable.txt
+</code></pre>
+
+<h3>Selected Judges Remarks:</h3>
+
+<p>When playing Minesweeper, a misclick might ruin a game, so why not leave the routine to the computer?
+This program automatically uncovers mines according to several rules, and leaves guessing (and applying
+the most straightforward of the rules &ndash; just for fun, perhaps?) to the user.</p>
+
+<p>Try creating your own input files according to the author&rsquo;s remarks. Did you encounter any problems?</p>
+
+<p>The submission was in violation of the &ldquo;2053&rdquo; size rule by one character, likely a late typo. It was easy to fix.</p>
+
+<h2>Author&rsquo;s comments:</h2>
+
+<h3>Semi-automatic Minesweeper</h3>
+
+<p>Minesweeper is a game to sweep mines, as you know.  The task consists of two parts:</p>
+
+<p>A) choose a random cell based on your sixth sense
+B) identify a non-mine cell based on logical inference</p>
+
+<p>However, (B) is error-prone, and a waste of time.  You must use a computer to do such a boring task!</p>
+
+<p>This program is a semi-automatic minesweeper which does Part (B) automatically.
+All you have to do is (A).  You can test if you are lucky or not.</p>
+
+<h4>How to use</h4>
+
+<p>It uses ncurses:</p>
+
+<pre><code>$ gcc -o prog prog.c -lncurses
+$ ./prog
+</code></pre>
+
+<p>You will see a terminal-wide field of a minesweeper.  Probe a cell by mouse click.
+If a cell turns out to have a mine (or not), the program determines whether its neighbors have a mine or not, and automatically probes (or flags) the cell.</p>
+
+<ul>
+<li><code>R</code>: new game (You can also click the smiley face at the top line.)</li>
+<li><code>Q</code>: quit</li>
+</ul>
+
+
+<h4>Internal</h4>
+
+<p>The program uses four types of local inference:</p>
+
+<h4>Rule 1</h4>
+
+<p>If the number of a cell is equal to the count of the flagged neighbors, all the unprobed neighbors are probed.</p>
+
+<p>Example:</p>
+
+<p><code>
+    ? ? ?      . . .
+    ? 3 ?  =&gt;  . 3 .
+    ! ! !      ! ! !
+</code></p>
+
+<p>Note that <code>?</code> is a unprobed cell (it is unknown whether the cell has a mine or not); <code>!</code> is a flagged cell (it is already known that the cell has a mine); and <code>.</code> is a probed cell (it is already known that the cell has no mine).</p>
+
+<h4>Rule 2</h4>
+
+<p>If the number of a cell is equal to the count of the unprobed or flagged neighbors, all the unprobed neighbors are flagged,</p>
+
+<p>Example:</p>
+
+<p><code>
+    . ? ?      . ! !
+    . 4 ?  =&gt;  . 4 !
+    . 2 !      . 2 !
+</code></p>
+
+<h4>Rule 3</h4>
+
+<p>Consider two number cells A and B.  If A is equal to the difference of B and the count of B&rsquo;s unprobed and flagged neighbors that are not A&rsquo;s neighbors, all A&rsquo;s unprobed neighbors that are not B&rsquo;s neighbors are probed.</p>
+
+<p>Example:</p>
+
+<p><code>
+    ? ? ?        . . .
+    ? 1 ? ?  =&gt;  . 1 ? ?
+    ? ? 4 .      . ? 4 .
+      ? . !        ? . !
+</code></p>
+
+<p>A and B are probed cells whose numbers are, respectively, 1 and 4.  The count of B&rsquo;s unprobed and flagged neighbors that are not A&rsquo;s neighbors is three (one <code>!</code> and two <code>?</code>s).  Since A (1) == B (4) - the count (3), the left and top unprobed cells are probed.</p>
+
+<h4>Rule 4</h4>
+
+<p>Consider two number cells A and B.  If B is equal to the difference of A and the count of A&rsquo;s unprobed and flagged neighbors that are not B&rsquo;s neighbors, all A&rsquo;s unprobed neighbors that are not B&rsquo;s neighbors are flagged.</p>
+
+<p><code>
+    ? ? ? ?      ! ? ? ?
+    ? 3 1 2  =&gt;  ! 3 1 2
+    2 2 . .      2 2 . .
+</code></p>
+
+<p>A and B are probed cells whose numbers are, respectively, 3 and 1.  The count of A&rsquo;s unprobed and flagged neighbors that are not B&rsquo;s neighbors is two (left <code>?</code>s).  Since B (1) == A (3) - the count (2), the left unprobed cells are flagged.</p>
+
+<h4>Note</h4>
+
+<p>Interestingly, these complex rules can be integrated to one simple rule.  Analyze the code.</p>
+
+<h4>One more thing</h4>
+
+<p>You can also play with a prepared map.</p>
+
+<pre><code>$ ./prog ioccc.txt
+</code></pre>
+
+<p>The format of the text is:</p>
+
+<pre><code>width height number-of-mines priorities-of-each-cell...
+</code></pre>
+
+<p>There are mines in a cell whose &ldquo;priorities-of-each-cell&rdquo; is less than &ldquo;number-of-mines&rdquo;.
+(But the mine in the first-clicked cell is removed.)</p>
+
+<h4>Bug fixes and Credits</h4>
+
+<p>The judges pointed out a bug of the original version that I submitted (prog.orig.c).  Because this program does not provide a feature to flag unprobed cells manually, we can do nothing if the number of unprobed cells are equal to the number of mines remaining; unwinnable.txt is an example for such a case.
+Thus, I implemented an additional rule to flag all unprobed cells in such a case into the final version (prog.c).</p>
+
+<p>Ilya Kurdyukov also pointed out a warning &ldquo;ignoring return value of &lsquo;fscanf&rsquo;&rdquo; only when &ldquo;-O3&rdquo; is used.  So I changed the code a little to pretend to use the return value of fscanf.</p>
+
+<p>Don Yang (omoikane) contributed another example map &ldquo;megumin.txt&rdquo; which is the Explosion Arch-Wizard.</p>
+<BR>
+<HR>
+<TABLE><TR>
+<TD><a rel="license" href="https://creativecommons.org/licenses/by-sa/3.0/"><img alt="Creative Commons License" style="border-width:0" src="/png/by-sa-3.0-88x31.png" /></a></TD>
+<TD><P>&copy; Copyright 1984-2020,
+<A HREF="/judges.html">Leo Broukhis, Simon Cooper, Landon Curt Noll</A>
+- All rights reserved<BR>
+This work is licensed under a <a rel="license" href="https://creativecommons.org/licenses/by-sa/3.0/">Creative Commons Attribution-ShareAlike 3.0 Unported License</a>.</P></TD>
+<TD>&nbsp;<!--<a href="https://validator.w3.org/check?uri=referer"><img src="https://www.w3.org/Icons/valid-html401" alt="Valid HTML 4.01 Transitional" height="31" width="88"></a>--></TD>
+</TR></TABLE>
+</body>
+</html>
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+491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 0 1 2 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551
+552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 3 4 5 587 588 589 6 7 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610
+611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 8 9 10 643 644 645 646 647 648 649 650 11 12 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669
+670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 13 14 15 699 700 701 702 703 704 705 706 707 708 709 710 711 16 17 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728
+729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 18 19 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 20 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789
+790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 21 22 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 23 24 836 837 838 839 840 841 842 843 844 845 846 847 848 849
+850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 25 26 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 27 898 899 900 901 902 903 904 905 906 907 908 909 910
+911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 28 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 29 961 962 963 964 965 966 967 968 969 970 971 972
+973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 30 31 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 32 33 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032
+1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 34 35 36 37 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 38 1083 1084 1085 1086 1087 1088 1089 1090 1091
+1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 39 1110 1111 40 41 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 42 43 44 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 45 1141 1142 1143 1144 1145 1146 1147 1148
+1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 46 47 48 1166 1167 1168 1169 49 50 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 51 52 53 54 55 1181 1182 1183 1184 1185 56 57 58 59 1186 1187 1188 1189 1190 60 1191 1192 1193 1194 1195 1196 1197
+1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 61 62 1215 1216 1217 63 64 65 66 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 67 68 69 1230 1231 1232 1233 1234 1235 1236 70 1237 1238 71 72 73 74 1239 1240 75 1241 1242 1243 1244 1245 1246
+1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 76 1267 1268 77 78 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 79 1283 1284 1285 80 1286 1287 1288 1289 81 1290 1291 1292 1293 1294 1295 1296 1297 1298 82 1299 1300 1301 1302 1303
+1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 83 1320 1321 84 85 1322 1323 86 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 87 88 1334 1335 1336 1337 1338 1339 89 90 91 1340 1341 1342 92 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 93 94 1353 1354 1355
+1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 95 96 1371 1372 1373 97 98 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 99 100 101 1386 1387 1388 1389 102 103 104 105 1390 1391 1392 1393 106 1394 1395 1396 1397 1398 1399 107 1400 1401 1402 108 1403 1404 1405
+1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 109 110 111 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 112 113 114 115 1437 1438 1439 1440 116 117 118 1441 1442 1443 1444 119 1445 1446 1447 1448 1449 120 1450 1451 1452 1453 1454 121 1455 1456
+1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 122 123 124 125 126 127 1468 128 129 130 1469 1470 131 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 132 133 134 1481 1482 1483 1484 1485 1486 135 1487 1488 1489 1490 1491 136 1492 1493 1494 1495 1496 137 1497 138 1498 139 1499 140 1500 1501
+1502 1503 1504 1505 1506 1507 1508 1509 141 142 143 1510 1511 1512 1513 144 145 1514 146 147 1515 1516 1517 1518 148 149 150 1519 1520 1521 1522 1523 1524 1525 1526 151 1527 1528 1529 152 153 1530 1531 1532 1533 1534 1535 1536 1537 154 1538 1539 1540 1541 1542 155 1543 1544 1545 1546 1547 156 1548 1549
+1550 1551 1552 1553 1554 1555 157 158 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 159 1566 1567 160 1568 161 162 163 164 165 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 166 167 168 169 1579 1580 1581 1582 1583 1584 1585 170 171 1586 1587 1588 1589 1590 172 1591 173 1592 174 175 1593 1594
+1595 1596 1597 176 177 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 178 179 180 181 1612 1613 182 183 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 184 185 186 187 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 188 1639 1640 1641 1642 189 1643 1644
+1645 1646 190 191 192 193 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 194 195 196 197 1660 1661 1662 1663 1664 1665 1666 1667 198 199 200 201 202 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 203 1681 1682 1683 1684 1685 1686 204 1687 1688 205 1689 206 1690 1691
+1692 1693 1694 1695 207 208 209 210 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 211 212 213 1709 1710 1711 214 215 216 1712 1713 217 218 219 220 1714 1715 221 222 1716 1717 1718 1719 1720 1721 1722 1723 223 224 1724 1725 1726 1727 1728 1729 1730 225 1731 1732 1733 226 1734 1735
+1736 1737 1738 1739 1740 1741 227 228 229 230 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 231 232 233 234 1759 1760 235 236 1761 237 238 239 240 1762 1763 1764 1765 1766 241 1767 1768 242 243 244 1769 1770 1771 1772 1773 1774 245 246 1775 1776 247 1777 1778
+1779 1780 1781 1782 1783 1784 1785 1786 248 249 250 251 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 252 253 1804 1805 1806 1807 254 255 256 257 258 259 1808 1809 1810 260 261 262 1811 1812 1813 263 1814 1815 1816 1817 1818 1819 1820 264 265 1821 266 1822 1823
+1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 267 268 269 270 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 271 1850 1851 1852 1853 272 273 274 275 276 277 1854 1855 278 279 280 281 282 1856 1857 1858 283 284 1859 1860 1861 1862 1863 1864 1865 285 1866 1867 1868
+1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 286 287 288 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 289 290 291 292 293 1909 1910 1911 1912 1913 294 295 1914 1915 1916 1917 1918 1919 1920 1921 1922
+1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 296 297 298 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 299 300 1975 1976 1977 1978 1979 1980 1981
+1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 301 302 303 304 305 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 306 307 308 2034 2035 2036 2037
+2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 309 310 311 312 313 314 315 316 317 318 319 320 321 322 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 323 324 325 326 327 328 329 330 331 2075 2076 2077 2078
+2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 2104 2105 2106 2107 2108 2109 2110 2111
+2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175
+2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239
@@ -0,0 +1,39 @@
+                               #include/**/<time.h>
+                               #include <ncurses.h>
+                               # include <stdlib.h>
+             /**               */#define O()for(y-=               !!\
+           y;y<H&&           /*...Semi-Automatic.*/y<           p/W+2;\
+         y++)for(x=p%   W,x-=!!/*..MineSweeper...*/x;x<W&&   x<p%W+2;x++)
+       #define _(x,y)COLOR_##x,COLOR_##y /*  click / (R)estart / (Q)uit  */
+     #define Y(n)attrset(COLOR_PAIR(n)),mvprintw(/* IOCCC2019 or IOCCC2020 */
+   typedef int I;I*M,W,H,S,C,E,X,T,c,p,q,i,j,k;char G[]=" x",U[256];I F(I p){ I
+      r=0,x,y=p/W,q;O()q=y*W+x,r+=M[q]^=p-q?(M[q]&16)<<8:0;return r;}I K(I p
+         ,I f,I g){ I x=(g+     f/256)%16-(f+g/256)%16,y=p/W,c=0,n=g/4096
+          ,m=x==n?0:x==g           /16%16-f/16%16-n?256:-1; if(m+1)O()if
+         ((4368&M[n=y*W             +x])==4112){ M[c=1,n]=(M[n]&~16)|m; }
+        return c;}void              D(){I p,k,o=0,n=C,m=0,q=0;if(LINES-1<H
+       ||COLS/2<W)clear             (),Y(4)LINES/2,COLS/2-16,"Make the ter\
+minal bigger!");else{for           (p=0;p<S;o+=k==3,Y(k)p/W+1,p%W*2,G),p++)G[1]=""
+"_*!..12345678"[k=E?256&M[p     ]?n--,2:E-2||M[p]%2<1?M[p]&16?q=p,m++,3:4+F(p)%16:
+1:3];k=T+time(0);T=o||T>=0||E-1?T:k;k=T<0?k:T;Y(7)0,0,"%03d%*s%03d",n>999?999:n,W*
+2-6,"",k>999?999:k);Y(9)0,W-1,E>1?"X-(":E-1||o?":-)":"8-)");M[q]|=256*(n==m&&n); }
+refresh();}short B[]={_(RED,BLACK),_(WHITE,BLUE),_(GREEN,RED),_(MAGENTA,YELLOW),_(
+CYAN,RED)};I main(I A,char**V){MEVENT e;FILE*f;srand(time(0));initscr();for(start\
+_color();X<12;X++){init_pair(X+1,B[X&&X<10?X-1:2],B[X?X<3?2:1:0]);}noecho();cbreak
+();timeout(9);curs_set(0);keypad(stdscr,TRUE);for(mousemask(BUTTON1_CLICKED|BUTTO\
+N1_RELEASED,0);;){S=A<2?f=0,W=COLS/2,H=LINES-1,C=W*H/5,0:fscanf(f=fopen(V[A-1],"r"
+       ),"%d %d %d",&W,&H,&C)>3; ;S+=W*H;M=realloc(M,S*sizeof(I)*2);for(i=0
+        ;i<S;i++)!f?M[i]=i,i&&(k=M[j=rand()%i],M[j]=M[i],M[i]=k):fscanf(f,
+         "%d",M+i);if(f)fclose(f);T=E=X=0;for(clear();D(),c=getch(),c-'r'
+          &&(c-KEY_RESIZE||E);){ if(c=='q'){ return(endwin(),0); }if(c==
+        KEY_MOUSE&&getmouse(&e)==OK&&e.x/2<W&&e.y<=H){if(!e.y&&(W-2<e.x&&
+      e.x<W+2)){break;}p=e.x/2+e.y*W-W;if(p>=0){if(!E){for(i=0;i<S;i++)M[S+M
+   [i]]=i,M[i]=16+(M[i]<C);C-=M[p]&1;M[p]=16;E=1;T=-time(0);}if(E<2)M[p]&=(M[p]
+     &257)==1?T+=time(0),E=2,273:257;}}for(p=0;p<S&&E==1;M[p++]&=273){}for(i=
+       (X+S-1)%S;E==1&&i!=X;X=(X+1)%S){if(!(M[p=M[X+S]]&272)){if(K(p,c=F(p)
+         ,0)){goto N;}   for(k=p/W-2,k=k<0?0:k;k<p/W+3&&k   <H;k++)for(j=
+           p%W-2,j          =j<0?0:j;j<W&&j<p%W+3;)if           (!(M[q=
+             k*W               +j++]&272)){ if(K(p,               c,F
+                               (q))){ goto N; }F(q)
+                               ; }F(p); }}N:; } } }
+                               /*(c)Yusukse Endoh*/
@@ -0,0 +1,39 @@
+                               #include/**/<time.h>
+                               #include <ncurses.h>
+                               # include <stdlib.h>
+             /**               */#define O()for(y-=               !!\
+           y;y<H&&           /*semi-automatic----*/y<           p/W+2;\
+         y++)for(x=p%   W,x-=!!/*-----minesweeper*/x;x<W&&   x<p%W+2;x++)
+       #define _(x)COLOR_##x/*IOCCC2019IOCCC2019IOCCC2019IOCCC2019IOCCC20*/
+     #define Y(n)attrset(COLOR_PAIR(n)),mvprintw/*IOCCC2019IOCCC2019IOCCC20*/
+   int*M,W,H,S,C,E,X,T,c,p,q,i,j,k;char G[]=" x",U[256];int F(int p){int r=0,x,
+      y=p/W,q;O()q=y*W+x,r+=M[q]^=p-q?(M[q]&16)<<8:0;return r;}int K( int p,
+         int f,int g){int        x=(g+f/256)%16-(f+g/256)%16,y=p/W,c=0,n=
+          g/4096,m=x==n             ?0:x==g/16%16-f/16%16-n?256:-1;if(m+
+         1)O()if((M[n=               y*W+x]&4368)==4112)M[n]=(M[n]&~16)|m
+        ,c++;return c;               }void D(){int p,k,o=0,n=C;if(LINES-1<
+       H||COLS/2<W)/*|               */clear(),Y(4)(LINES/2,COLS/2-16,"Mak\
+e the terminal window "             "bigger!");else{for(p=0;p<S;o+=k==3,Y(k)(p/W+1
+,p%W*2,G),p++)G[1]="_*!.."       "12345678"[k=E?M[p]&256?n--,2:E-2||M[p]%2<1?M[p]&
+16?3:4+F(p)%16:1:3];k=T+time(0);T=o||T>=0||E-1?T:k;k=T<0?k:T;Y(7)(0,0,"%03d%*s%03\
+d",n>999?999:n,W*2-6,"",k>999?999:k);Y(9)(0,W-1,E>1?"X-(":E-1||o?":-)":"[-)");}re\
+fresh();}int main(int A,char**V){short B[]={_(RED),_(BLACK),_(WHITE),_(BLUE),_(GR\
+EEN),_(RED),_(MAGENTA),_(YELLOW),_(CYAN)};MEVENT e;FILE*f;srand(time(0));initscr()
+;for(start_color();X<12;X++)init_pair(X+1,B[X&&X<10?X-1:2],B[X?X<3?2:1:0]);noecho(
+);cbreak();timeout(9);curs_set(0);keypad(stdscr,TRUE);for(mousemask(BUTTON1_CLICK\
+ED|BUTTON1_RELEASED,0);;){if(A-->1){f=fopen(V[A],"r");fscanf(f,"%d %d %d",&W,&H,&C
+       );}else{f=0;W=COLS/2;H=LINES-1;C=W*H/5;}S=W*H;M=realloc(M,S*2*sizeof
+        (int));for(i=0;i<S;i++)!f?M[i]=i:fscanf(f,"%d",M+i);for(i=0;!f&&i<
+         S;i++)k=M[j=i+rand()%(S-i)],M[j]=M[i],M[i]=k;if(f)fclose(f);T=E=
+          X=0;for(clear();D(),c=getch(),c-'r'&&(c-KEY_RESIZE||E);){if (c
+         =='q')return(endwin(),0);if(c==KEY_MOUSE&&getmouse(&e)==OK&&e.x/
+      2<W&&e.y<=H){if(!e.y&&(W-2<e.x&&e.x<W+2))break;p=e.x/2+e.y*W-W;if(p>=0
+   ){if(!E){for(i=0;i<S;i++)M[S+M[i]]=i,M[i]=16+(M[i]<C);C-=M[p]&1;M[p]=16;E=1;
+     T=-time(0);}if(E<2)M[p]&=(M[p]&257)==1?T+=time(0),E=2,273:257;}}for(p=0;
+       p<S&&E==1;)M[p++]&=273;for(i=(X+S-1)%S;E==1&&i!=X;X=(X+1)%S){if(!(M[
+         p=M[X+S]]&272   )){if(K(p,c=F(p),0))goto N;for(k   =p/W-2,k=k<0?
+           0:k;k<H          &&k<p/W+3;k++)for(j=p%W-2           ,j=j<0?
+             0:j               ;j<W&&j<p%W+3;j++)if               (!(
+                               M[q=j+k*W]&272)){if(
+                               K(p,c,F(q)))goto N;F
+                               (q);}F(p);}}N:;}}}
@@ -0,0 +1,6 @@
+5 5 4
+0 1 5 6 4
+2 3 7 8 9
+10 11 12 13 14
+15 16 17 18 19
+20 21 22 23 24
				`@@ -0,0 +1 @@`
				25 9 44 80 44 101 194 220 134 60 144 183 223 149 81 131 59 55 146 57 113 114 63 75 135 91 52 177 99 100 192 216 126 54 206 51 106 176 128 85 105 208 104 219 98 205 160 211 197 152 93 204 76 127 171 25 147 173 17 29 40 185 153 30 41 20 132 193 31 33 42 161 186 26 27 9 137 138 48 121 11 108 174 5 190 19 214 133 14 201 50 97 142 4 129 136 74 191 21 199 109 164 130 62 94 28 170 64 7 116 38 182 200 37 123 86 92 215 23 224 112 102 165 18 218 73 178 163 120 124 36 222 148 24 217 22 69 89 16 49 119 158 202 2 187 156 196 212 12 111 175 115 107 169 70 0 79 72 3 34 35 103 77 10 6 1 209 122 13 15 32 56 61 43 39 8 53 78 88 117 207 210 150 71 125 139 87 143 155 141 68 90 65 140 47 203 168 67 84 172 96 195 66 110 162 221 181 166 154 180 198 184 45 95 167 46 145 213 159 189 118 82 151 83 179 157 188 58