usaco生成器

#include <bits/stdc++.h>
using namespace std;
string op;
int main(){

    cin >> op;
    freopen((op+".cpp").c_str() , "w", stdout);
    cout<<"/*"<<endl<<"ID: XXXXXXXXXXXXXXX"<<endl;
    cout<<"PROG: "<<op<<endl;
    cout<<"LANG: C++"<<endl<<"*/"<<endl;
    cout<<"#include <bits/stdc++.h>"<<endl<<
            "using namespace std;"<<endl;
    cout<<"int main()"<<endl<<"{"<<endl;
    cout<<"\tfreopen(\""+op+".in\","+"\"r\","+"stdin);"<<endl;
    cout<<"\t#ifndef YYYYY"<<endl;


    cout<<"\tfreopen(\""+op+".out\","+"\"w\","+"stdout);"<<endl;
    cout<<"\t#endif"<<endl;
    cout<<"}"<<endl;
    freopen((op+".in").c_str(), "w", stdout);
    //cout<<"!!"<<endl;
    return 0;
}