mtry

摘要： 1、vector的基本用法#include<vector>（1）定义：vector<int>S；定义一个空的vector对象，存储的是int类型的元素。vector<int>S(n)；定义一个含有n个int元素的vector对象。（2）基本操作：S[i]；直接以下标方式访问容器中的元素。S.front()；返回首元素。S.back()；返回尾元素。S.size()；返回表长。S.empty()；当表为空时返回true，否则返回false。S.pop_back()；删除表尾元素。S.begin()；返回指向首元素的迭代器。S.end()；返回指向尾元素的迭代器 阅读全文

摘要： InformationTime Limit:2 Seconds Memory Limit:32768 KBIt is a war between Country Alpha and Country Beta. Country Alpha gets following information about Country Beta:Country Beta has n (2 <= n <= 100) cities numbered from 0 to n-1. Each city has a transmitter and a receiver. One city is able to 阅读全文