#include<bits/stdc++.h> 
using namespace std;
char a,command;
int main(){
	while (true) {
		cin>>a;
        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 {
    
        }
    }
	return 0;
}