#include <iostream>
#include <fstream>
#include <vector>
#include <cstring>
#include <string>
#include <algorithm>
#include <iomanip>
using namespace std;

int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);

	string ans = "0000000000", res;
	int n;

	cout << ans << endl;
	cout.flush();
	cin >> n >> res;

	for(int i = 0; i < 10; i++) {
		int  maxj, maxn = -1;
		for(int j = 0; j < 10; j++) {
			ans[i] = '0' + j;
			cout << ans << endl;
			cout.flush();

			cin >> n >> res;
			if(maxn < n) {
				maxj = j;
				maxn = n;
			}
		}
		ans[i] = '0' + maxj;
	}

	cout << ans << endl;
}