Rename hint.txt and hint.text to README.md

2015/endoh4/README.md

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+# Best One-liner
+
+Yusuke Endoh  
+<https://github.com/mame/>  
+Twitter: @mametter  
+
+
+## Judges' comments:
+### To use:
+
+    make
+
+    ./prog <a number of arguments>
+
+### Try:
+
+    ./prog @ @ @ @ @ @
+
+    ./prog @ @ @ @ @ @ @ @ @ @ @ @
+
+    ./prog $(perl -e 'print "@ " x (2*3*5*7);')
+
+    ./prog $(< Makefile)
+
+### Selected Judges Remarks:
+
+For this one liner it is best to avoid prime numbers. The output groups
+factors in the x-y dimensions. How many factors can be represented before you
+run out of command line argument space? How could you modify the program to
+experiment with numbers that have more or larger factors?
+
+
+## Author's comments:
+Visual factorization 1-liner.  Try:
+
+    gcc -o prog prog.c
+    ./prog @
+    ./prog @ @
+    ./prog @ @ @
+    ./prog @ @ @ @
+    ./prog @ @ @ @ @ @
+    ./prog @ @ @ @ @ @ @ @
+    ./prog @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
+
+Inspired by [Animated Factorization Diagrams](http://www.datapointed.net/visualizations/math/factorization/animated-diagrams/).
+
+
+EDIT: `prog.orig.c` is the original version that I submitted.  Gil Dogon kindly improved it during the review.  Thank you!
+
+--------------------------------------------------------------------------------
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