Entries from 2015-05-01 to 1 month
題目鏈接:http://codeforces.com/contest/545
題目鏈接:http://community.topcoder.com/stat?c=problem_statement&pm=13791&rd=16462
題目鏈接:http://community.topcoder.com/stat?c=problem_statement&pm=13779&rd=16462 http://community.topcoder.com/stat?c=problem_statement&pm=13779&rd=16462
題目鏈接:http://codeforces.com/contest/544/problem/D
題目鏈接:http://codeforces.com/contest/544/problem/C