#include <iostream>
#include <cstdio>
#include <string>
#include <cstring>
#include <algorithm>
#include <vector>
#include <map>
#include <set>
#include <stack>
#include <queue>
#include <functional>
#include <cmath>
#ifndef ONLINE_JUDGE
# include <complex>
# include <random>
# include <array>
# include <unordered_map>
# define mkt make_tuple
#endif
#ifdef _LOCAL
# include "module/for_local.h"
#else
# define assert(...) ((void)0)
# define ifdebug if (false)
# define echo(...) ((void)0)
#endif
using namespace std;
typedef long long ll; typedef unsigned long long ull;
#define repi(_I, _B, _E) for(int _I = (_B); (_I) < (_E); ++ (_I))
#define rep(_I, _N) for(int _I = 0; (_I) < (_N); ++ (_I))
#define all(_X) (_X).begin(), (_X).end()


int main()
{
	rep(i, 1000)
	{
		printf("%03d\n", i);
		fflush(stdout);

		char msg[100] {};
		scanf("%s", msg);
		if ( ! strcmp(msg, "unlocked") ) {
			break;
		}
	}
	return 0;
}