import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
	public static void main(String[] args) {
		BufferedReader buff = new BufferedReader(new InputStreamReader(System.in));

		try {

			for (int i = 0; i < 10; ++i) {
				for (int j = 0; j < 10; ++j) {
					for (int k = 0; k < 10; ++k) {
						System.out.println("" + i + j + k);
						if ((buff.readLine()).equals("unlocked")) {
							break;
						}
					}
				}
			}

		} catch (NumberFormatException e) {
			e.getStackTrace();
		} catch (IOException e) {
			e.getStackTrace();
		} catch (Exception e) {
			e.getStackTrace();
		}
	}
}