#include<iostream>
#include<string>

using namespace std;

int main(){

	string s;
	int c=1;
	cout<<"000"<<endl<<flush;

	while(cin>>s){
		if(s=="unlocked") break;
		else{
			cout<<c/100%10<<c/10%10<<c%10<<endl<<flush;
			c++;
		}
	}
}