#include<iostream>
#include<cstdio>
#include<cstring>
#include<string>
#include<vector>
#include<queue>
#include<stack>
#include<set>
#include<map>
#include<utility>
#include<sstream>
#include<cctype>
#include<cmath>
#include<algorithm>
using namespace std;

#define ALL(x) (x).begin(),(x).end()
#define RALL(x) (x).rbegin(), (x).rend()
#define rev(i,n) for(int (i)=(n-1);(i)>=0;(i)--)
#define repp(i,n) for(int (i)=1;(i)<=(n);(i)++)
#define rep(i,n) for(int (i)=0;(i)<(n);(i)++)
#define rev(i,n) for(int (i)=(n-1);(i)>=0;(i)--)
#define clr(a) memset((a), 0 ,sizeof(a))


typedef pair<int,int> P;
typedef vector<pair<int,int> > pii;
typedef map<string,int> mi;



void solve(){
    string s;
    int a,b,c;
    for(int i=0;i<1000;++i){
        a = i/100;
        b = (i%100)/10;
        c = i%10;
        cout << a << b << c << endl;
        cin >> s;
        if(s=="unlocked")
            break;
    }
}

int main(void){
	solve();
return 0;
}