#include <algorithm>
#include <climits>
#include <cmath>
#include <cstdio>
#include <cstring>
#include <functional>
#include <iostream>
#include <queue>
#include <stack>
#include <string>
#include <vector>
#define INF 10000000
#define PI 3.14159265358979323846
using namespace std;
typedef long long ll;
typedef pair<int, int> p;
typedef queue<int> qi;
typedef queue< pair<int, int> > qp;
typedef vector<int> vi;
typedef vector<int, int> vii;
typedef vector< pair<int, int> > vp;
int dx[4] = { 0, 1, 0, -1 };
int dy[4] = { 1, 0, -1, 0 };

int main(){
	ios::sync_with_stdio(false);

  char num[4];
  string ret;

  for(int i=0;i<=9;i++){
    num[0] = (char)i;
    for(int j=0;j<=9;j++){
      num[1] = (char)j;
      for(int k=0;k<=9;k++){
        num[2] = (char)k;
        cout << num << endl;
        //flush();
        cin >> ret;
        if(ret == "unlocked")
        return 0;
      }
    }
  }

	return 0;
}