#include <iostream>
#include <string>
#include <algorithm>
#include <functional>
#include <vector>
#include <stack>
#include <queue>
#include <set>
#include <map>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
using namespace std;


int main()
{
	for( int i = 0; i < 1000; i++ ){
		if( i < 10 )
			cout << "00" << i << endl;
		else if( i < 100 )
			cout << "0" << i << endl;
		else
			cout << i << endl;
		string res;
		cin >> res;
		if( res == "unlocked" )
			break;
	}
	return 0;
}