rock-paper-scissors维护三个前缀和,然后注意顺序,最后做差来确定可行的答案,因为答案比较小,可以考虑这种暴力做法,像这种方案数可以++的题真的不多,如果想不出来特别优秀的想法,不妨简单化思维 1 #include<iostream> 2 #include<cstdio> 3 #include<queue> 4 #include<algorithm>
题目链接:http://poj.org/problem?id=3258 River Hopscotch Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 22092 Accepted: 9138 Description Every year the cows hold an event featuring a peculiar version of hopscotch that involves ca