#include<bits/stdc++.h>
using namespace std;
int main()
{
	while (true) { 
    string feedback;
    command = ;  
    cout << command << endl;
	cin >> feedback; 
    if (all_explored) {
	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 {
		
	}
    }
    cout << command << endl;  cin >> feedback;
    cout << command << endl; feedback = get_feedback(command);
	return 0;
}