#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <algorithm>
#include <utility>
#include <functional>
#include <cstring>
#include <queue>
#include <stack>
#include <math.h>
#include <iterator>
#include <vector>
#include <string>
#include <set>
#include <math.h>
#include <iostream> 
#include<map>
#include <stdlib.h>
#include <list>
#include <typeinfo>
#include <list>
#include <set>
#include <cstdint>
using namespace std;
#define MAX_MOD 1000000007
#define REP(i,n) for(int i = 0;i < n;++i)
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 << q << p << endl;
				fflush(stdout);
				string a;
				cin >> a;
				if (a[0] == 'u') {
					goto end;
				}
			}
		}
	}
end:;
}