#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;
}