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