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