#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 {
			
		}	
	}

	return 0;
}