#include <iostream>
using namespace std;

int main(){
	string word;

	cout << "Hello, world!"<<endl;
	cout << "type the exit"<< endl;
	cin >> word;

	if (word == "exit")
		cout << "Á¾·áµÇ¾ú½À´Ï´Ù." << endl;
		return 0;
}