Solve the problem 22 'Names scores'.
Read names from the 'names.txt' rather than hard coding.
Print the sum of name scores directly in the code read from 'name.txt'.
Refactoring code in functional programming style.
Factor out common code of solution of problem 18 and 67.
Use indexed_map() rather than map.
Fix the broken symbolic link.
Solve the problem 23 'Non-abundant sums'.
Fix the hashbang.