#include <cstdio>
#include <iostream>
#include <vector>
#include <map>
#include <unordered_map>
#include <set>
#include <unordered_set>
#include <string>
#include <cstring>
#include <sstream>
#include <algorithm>
#include <functional>
#include <queue>
#include <stack>
#include <cmath>
#include <iomanip>
#include <list>
#include <tuple>
#include <bitset>
#include <ciso646>

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<ll, ll> P;
typedef tuple<ll, ll, ll> T;
typedef vector<ll> vec;

inline bool cheak(ll x, ll y, ll xMax, ll yMax){ return x >= 0 && y >= 0 && xMax > x && yMax > y; }
inline int toInt(string s) { int v; istringstream sin(s); sin >> v; return v; }
template<class T> inline string toString(T x) { ostringstream sout; sout << x; return sout.str(); }
template<class _RanIt> inline string toString(_RanIt _First, _RanIt _Last, string sep) { if (_First == _Last)return ""; ostringstream sout; sout << *_First; for (_First = next(_First); _First != _Last; _First = next(_First)) { sout << sep << *_First; }return sout.str(); }
template<class _RanIt> inline string toString(_RanIt _First, _RanIt _Last, string sep, string sep2) { if (_First == _Last)return ""; ostringstream sout; sout << toString(all(*_First), sep); for (_First = next(_First); _First != _Last; _First = next(_First)) { sout << sep2 << toString(all(*_First), sep); }return sout.str(); }
template<class T> inline T sqr(T x) { return x*x; }
template<class T> inline T mypow(T x, ll n){ T res = 1; while (n > 0){ if (n & 1)res = res * x;	x = x * x;	n >>= 1; }return res; }
inline int gcd(ll a, ll b){ return b ? gcd(b, a%b) : a; }
inline int lcm(ll a, ll b){ return a / gcd(a, b) * b; }

#define For(i,a,b)	for(ll (i) = (a);i < (b);(i)++)
#define rep(i,n)	For(i,0,n)
#define rFor(i,a,b)	for(ll (i) = (a-1);i >= (b);(i)--)
#define rrep(i,n)	rFor(i,n,0)
#define clr(a)		memset((a), 0 ,sizeof(a))
#define mclr(a)		memset((a), -1 ,sizeof(a))
#define all(a)		(a).begin(),(a).end()
#define sz(a)		(sizeof(a))

const ll dx[8] = { 1, 0, -1, 0, 1, 1, -1, -1 }, dy[8] = { 0, -1, 0, 1, -1, 1, -1, 1 };

const ll mod = 1e9 + 7;
const ll INF = 1e9 + 9;

#define int ll

signed main(){

	rep(i, 1000){
		printf("%03d", i);
		fflush(stdout);
		string s;
		cin >> s;
		if (s == "unlocked")break;
	}

	return 0;
}