#include <iostream>
#include <string>
#include <algorithm>
#include <functional>
#include <vector>
#include <stack>
#include <queue>
#include <set>
#include <map>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
using namespace std;


int main()
{
	int i, j, k;
	int ans[10];
	for( i = 0; i < 10; i++ ){
		int maxa = -11;
		for( j = 0; j < 10; j++ ){
			for( k = 0; k < i; k++ )
				cout << "0";
			cout << j;
			for( k = i + 1; k < 10; k++ )
				cout << "0";
			cout << endl;
			int a; string s;
			cin >> a >> s;
			if( a == 10 )
				return 0;
			if( a > maxa ){
				maxa = a;
				ans[i] = j;
			}
		}
	}
	for( i = 0; i < 10; i++ )
		cout << ans[i];
	cout << endl;
	return 0;
}