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