#include<iostream>
using namespace std;

int main(){
    char ch;
    cin>>ch;
    if(ch>='a' && ch <='z')||(ch>='A' && ch<='Z'))
    {
        cout<<"Alphabet"<<endl;
    }
    else if(ch>='0' && ch<='9')
    {
        cout<<"Digit"<<endl;
    }
    else {
        cout<<"Special Character"<<endl;
    }
    return 0;
}