Problem A:Fox and Number Game(389A
Problem B: Fox and Cross(389B)
Problem C: Fox and Box Accumulation(388A)
Problem D: Fox and Minimal path(388B)
Problem E: Fox and Card Game(388C)
CodeForces Round #228 (Div. 2)
原文：http://blog.csdn.net/keshuai19940722/article/details/18987293