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

int main(int argc, char const *argv[])
{
	int K=0;
	string ans="0000000000"; 
	for (int i = 0; i < 10; ++i)
	{
		for (int j = 0; j< 10; ++j)
		{
			string S = "aaaaaaaaaa";
			S[i] = j + '0';
			int R;
			string N;
			cout<<S<<endl;
			cin>>R;
			cin>>N;
			if(R == 1)
			{
				 K = ++K;

				 ans[i]+= j;
				 break;
			}
				
			
		}
		
	}
	

	cout<<ans<<endl;
	return 0;
}