#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;
}