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