#include <iostream>
#include <string>
#include <cstdio>

using namespace std;

int get() {
	int num; cin >> num;
	string str; cin >> str;
	return num;
}

int main(void) {
	string str = "0000000000";
	cout << str << endl;
	int num = get();
	if (num == 10) return 0;

	for (int i = 0; i < 10; ++i) {
		for (int j = 0; j < 9; ++j) {
			str[i]++;
			cout << str << endl;
			int n = get();
			if (n == 10) return 0;
			if (n > num) {
				n = num;
				break;
			}
		}
	}

	return 0;
}