#include <iostream>
#include <string>
using namespace std;

int main() {
	cout << "[ ¿¡ÄÚ ÇÁ·Î±×·¥ ]" << endl;

	while (1) {
		cout << "input : ";
		string i;
		cin >> i;
		cout << "echo : " << i << endl;
	}

	return 0;
}