#define _CRT_SECURE_NO_WARNINGS
#include<sstream>
#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<climits>
#include<cmath>
#include<string>
#include<vector>
#include<set>
#include<map>
#include<queue>
#include<numeric>
#include<functional>
#include<algorithm>
#include<bitset>
#include<tuple>
#include<unordered_set>
#include<random>
using namespace std;
#define INF (1<<29)
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define all(v) v.begin(),v.end()
#define uniq(v) v.erase(unique(all(v)),v.end())
#define indexOf(v,x) (find(all(v),x)-v.begin())


int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	
	string ans;
	rep(i,10){
		int mx=-1,mxj=0;
		rep(j,10){
			string s=ans;
			s+='0'+j;
			while(s.size()<10)s+='0';
			cout<<s<<endl;
			int n;
			cin>>n>>s;
			if(n==10){
				return 0;
			}
			if(mx<n){
				mx=n;
				mxj=j;
			}
		}
		ans += mxj+'0';
	}

	return 0;
}