#include  <bits/stdc++.h>
#define rep(i,n) for(int (i)=0;(i)<(n);(i)++)
using namespace std;

string a="0000000000",b;

void dfs(int pos){
	if(pos==10) return ;
	int res[10];
	rep(i,10){
		a[pos]=i+'0';
		cout << a << endl;
		cout.flush();
		cin >> res[i] >> b;
		if(res[i]==10) return;
	}
	int idx=0;
	rep(i,10) if(res[i]>res[idx]) idx=i;
	a[pos]=idx+'0';
	dfs(pos+1);
	return;
}

int main(void){
	dfs(0);
	return 0;
}