#include <bits/stdc++.h>
#define FOR(i,a,b) for(int i = (a); i < (b); ++i)
#define REP(i,n) FOR(i,0,n)
#define RREP(i,n) for(int i = (n) - 1; (i) >= 0; --i)
#define SZ(n) (int)(n).size()
#define ALL(n) (n).begin(), (n).end()
#define MOD LL(1e9 + 7)
#define INF 1000000
using namespace std;
typedef long long LL;
typedef vector<int> VI;
typedef pair<int, int> PI;

int main() {
	string s = "0000000000";
	int re;
	string t;
	int k = 0;
	int r = 0;
	cout << s << endl;
	cin >> r >> t;
	while (1) {
		cout << s << endl;
		cin >> re >> t;
		if (t == "unlocked")
			break;
		if (re != r) {
			if (re > r) {
				r = re;
				k++;
			}
			else
				s[k]--;
			continue;
		}
		s[k]++;
	}
	return 0;
}