Update A3 Codechef
Add Codeforces Round 227 Div 2
Remove exec spoj/4033
Add trie.txt - problems related to trie, etc.
Add R227 II D of __ivan__
Add Spoj 17955 - Lalith Dosa
Add R228 I
Add Timus 1776 (unsolved)
Add tests for Chef A3