#include <bits/stdc++.h>
using namespace std;
int main() {
	while (true) {
 string feedback;
 command = next;  
 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; 
 } 
}
	return 0;
}