#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;
}