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LOOPS Problem Description Akemi Homura is a Mahou Shoujo (Puella Magi/Magical Girl).Homura wants to help her friend Madoka save the world. But because 阅读全文
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线段树: #include<iostream> #define MAXN 101000 #define LL long long using namespace std; struct nond{ LL l,r,dis,flag; }tree[MAXN*4]; int N,M,a,b,c,Z; vo 阅读全文
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P2922 [USACO08DEC]秘密消息Secret Message P2922 [USACO08DEC]秘密消息Secret Message P2922 [USACO08DEC]秘密消息Secret Message 题目描述 Bessie is leading the cows in an a 阅读全文