Problem 10.
Add Haskell directory.
Completed problem 53.
First attempt at problem 79.
Move data directory to common location.
Rudimentary attempt at 79 in C.
File now in the correct format.
Comments in C files.
C version of problem 11, including data file.
Start of C version of problem 13, including data file.
Completed and tidied C version of problem 13.
Haskell problem 1 correct.
Haskell: first attempt at problem 2.
C: further work on problem 79.
Python: problem 31 not yet complete.