https://codeforces.com/problemset/problem/4/C 用来哈希的一道题目,用map也可以强行过,但是性能慢了6倍,说明是在字符串比较的时候花费了接近6倍的时间. 假如时间性能允许的话不妨用map存hash值,这样就可以让他自然溢出了.基数我喜欢选23333,溢出选择ll自然溢出(反正是map存的可以是负的) 自带hash型map,也是慢到感人. #include<bits/stdc++.h> using namespace std; int n; stri…

http://acm.hust.edu.cn/vjudge/contest/view.action?cid=93241#problem/C (654123) http://codeforces.com/problemset/problem/4/C Registration system Time Limit:5000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Submit Status Practice CodeFo…

Registration system 时间限制:1000 ms  |  内存限制:65535 KB 难度:2   描述 A new e-mail service "Berlandesk" is going to be opened in Berland in the near future. The site administration wants to launch their project as soon as possible, that's why they ask yo…

C. Registration system Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/problemset/problem/4/C Description A new e-mail service "Berlandesk" is going to be opened in Berland in the near future. The site administration wants to…

Description A new e-mail service "Berlandesk" is going to be opened in Berland in the near future. The site administration wants to launch their project as soon as possible, that's why they ask you to help. You're suggested to implement the prot…

// Registration system.cpp : 此文件包含 "main" 函数.程序执行将在此处开始并结束. // #include <iostream> #include <map> #include <string> using namespace std; int main() { //int n,index=0,ds=1; int n; cin >> n; //string* s = new string[n]; //f…

Registration system 时间限制:1000 ms  |  内存限制:65535 KB 难度:2   描述 A new e-mail service "Berlandesk" is going to be opened in Berland in the near future. The site administration wants to launch their project as soon as possible, that's why they ask yo…

 Registration system A new e-mail service "Berlandesk" is going to be opened in Berland in the near future. The site administration wants to launch their project as soon as possible, that's why they ask you to help. You're suggested to implement…

C. Registration system time limit per test 5 seconds memory limit per test 64 megabytes input standard input output standard output A new e-mail service "Berlandesk" is going to be opened in Berland in the near future. The site administration wa…

Registration system 时间限制:1000 ms  |  内存限制:65535 KB 难度:2 描写叙述 A new e-mail service "Berlandesk" is going to be opened in Berland in the near future. The site administration wants to launch their project as soon as possible, that's why they ask yo…