#include <algorithm>
#include <iostream>
#include <cmath> 
using namespace std;
int main()
{
	while(true){
		string feedback;
		string command="";1
		cout << command << endl;2
		feedback=get_feedback(command);3
		if(all_explored){4
			cout << "END" << endl;
			cout << n << " " << m << endl;
			for(int i=0;i<n;i++){
				for(int j=0;j<m;j++){
					cout << map[i][j];
				}
				cout << endl;
			}
			break;
		}else{5
			
		}
	}
	return 0;
}