#include <bits/stdc++.h> using namespace std; int main(){ char a; cin>>a; if (a >= 'a' && a <= 'z'){ cout<<'a'<<endl; } else if (a >= 'A' && a <= 'Z'){ cout<<'A'<<endl; } else if (a >= '0' && a <= '9'){ cout<<'0'<<endl; } else{ cout<<"other"<<endl; } return 0; }