volleyball-match type error fix
https://www.hackerrank.com/contests/w2/challenges/manasa-and-stones
https://www.hackerrank.com/contests/w2/challenges/cut-the-tree
http://www.codechef.com/MAY14/problems/OJUMPS
http://www.codechef.com/MAY14/problems/RRSTONE
http://www.codechef.com/MAY14/problems/COMPILER