#define _CRT_SECURE_NO_WARNINGS
#define _USE_MATH_DEFINES
#include <stdio.h>
#include <algorithm>
#include <functional>
#include <cstring>
#include <queue>
#include <stack>
#include <math.h>
#include <iterator>
#include <vector>
#include <string>
#include <set>
#include <math.h>
#include <iostream>
using namespace std;
int main() {
	for (int i = 0;i < 10;++i) {
		for (int q = 0;q < 10;++q) {
			for (int p = 0;p < 10;++p) {
				cout << i << p << q << flush;
				string a;
				cin >> a;
				if (a[0] == 'u') {
					goto end;
				}
			}
		}
	}
end:;
}