#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <math.h>
using namespace std;
typedef unsigned int uint;
typedef unsigned long ulong;

int main() {
	int count = 0;
	string input;

	while (count < 1000) {
		printf("%03d\n", count);

		cin >> input;
		if (input == "unlocked") {
			return 0;
		}
		else {
			count++;
		}
	}

	return 0;
}