#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;
}