Codeforces Round #235 (Div. 2)

Codeforces Round #235 (Div. 2)
題目敘述:
http://codeforces.com/contest/401
捏題:
Problem A - Vanya and Cards (greedy)
http://codepad.org/TxM8H7oG
Problem B - Sereja and Contests (greedy)
http://codepad.org/BNXhEiKh
Problem C - Team (greedy)
http://codepad.org/hpqyo7lc
Problem D - Roman and Numbers (DP)
http://codepad.org/clzI6jJF
Problem E - Olympic Games (math)
http://codepad.org/mkZVSqMd