#define PROBLEM Helloworld
//#include "../Env.h"

#include <iostream>

class Helloworld {
public:
    void solve() {
        std::cout << "Hello World!" << std::endl;
    }
};

#ifndef YUKICODER_ENV_H
int main() {
    auto problem = new PROBLEM();
    problem->solve();
    return 0;
}
#endif //YUKICODER_ENV_H