Make 2000/anderson use fgets() not gets()

I tried to keep the format similar to the original. The only difference
is that there are more lines now.

2000/anderson/README.md

@@ -12,8 +12,9 @@ Indonesia
 make
 ```
 
-NOTE: this entry uses `gets()` so you will likely get a warning when compiling
+[Cody Boone Ferguson](/winners.html#Cody_Boone_Ferguson) changed this entry to
-and/or executing this program.
+use `fgets()` instead of `gets()` to make it safer. Thank you Cody!
+
 
 ### To run:
 

2000/anderson/anderson.c

@@ -25,12 +25,15 @@ j((r[2]=0,R(                                              ))
 ),r[1]-=q)                                                &&
 O(g-=-q)                                                  ;}
 C(){(                                                     J=
-gets                                                      (K
+fgets                                                     (K
-[1]))&&C((B(g=K[2]),*r=!(!*r&&(*g++=0)),(*r)[r]=g-K[2],g=K[2
+[1],1000,stdin))&&C((B(g=K[2]),*r=!(!*r&&(*g++=0)),(*r)[r]=g
-],r[
+-K[2
-1]&&
+],g=
-O())
+K[2]
-);;}
+,r[1
+]&&O
+()))
+ ;;}
 main
 (){C
 ((l(