POJ 3237 Tree 题目链接 就多一个取负操作,所以线段树结点就把最大和最小值存下来,每次取负的时候,最大和最小值取负后.交换就可以 代码: #include <cstdio> #include <cstring> #include <vector> #include <algorithm> using namespace std; const int N = 10005; const int INF = 0x3f3f3f3f; int dep[N]…
题目链接: 题目 Conscription Time Limit: 1000MS Memory Limit: 65536K 问题描述 Windy has a country, and he wants to build an army to protect his country. He has picked up N girls and M boys and wants to collect them to be his soldiers. To collect a soldier witho…
Conscription Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 6325 Accepted: 2184 Description Windy has a country, and he wants to build an army to protect his country. He has picked up N girls and M boys and wants to collect them to be…
Conscription Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 14661 Accepted: 5102 Description Windy has a country, and he wants to build an army to protect his country. He has picked up N girls and M boys and wants to collect them to b…