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