摘要： http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=3321回溯，dfs实现，注意要用long long， 9个100相乘最大数需要long long表示。#include <iostream>#include <cstdio>using namespace std;long long a[20];int n;int k;long long ans;const long long inf = 1000000000000000LL;long long myabs(long long nn){ return 阅读全文

摘要： http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=1875#include <vector>#include <iostream>#include<algorithm>#include <string>#include <cstring>using namespace std;int main(){ vector<string> phonelist; int testcast; cin >> testcast; while(testcast-- 阅读全文