#include <algorithm>
#include <cstdlib>
#include <fstream>
#include <iostream>
#include <list>
#include <map>
#include <math.h>
#include <queue>
#include <set>
#include <sstream>
#include <stdlib.h>
#include <stdio.h>
#include <string>
#include <time.h>
int main(int argc)
{
int a= 10;
cout<<a<<endl;
return 0;
}
网站如
http://codepad.org
http://www.compileonline.com/compile_cpp_online.php
http://ideone.com/
https://compilr.com/