#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;
}