#include <iostream>
using namespace std;
int main(){
	string ans(10, '0');
	int last;
	cout << ans << endl;

	int x;
	string s;
	cin >> x >> s;
	last = x;
	
	for(int i=0; i<10 && last != 10; i++){
		for(int j=1; j<10; j++){
			ans[i] = '0' + j;
			cout << ans << endl;
			cin >> x >> s;

			if(last < x){
				last = x;
				break;
			}else if(last > x){
				ans[i] = '0' + j-1;
				break;
			}
		}
	}
	
	return 0;

}