#include<stdio.h>
int main()
{
    char ch;
    scanf(" %d",&ch);
    if((ch>='A' && ch<='Z')|| (ch>='a' && ch<='z')) //instead this use isalpha()
    {                                               
        printf("Alphabet");
    }
    else if (ch>=0 && ch<=9)                        // for this use isdigit()
    {
        printf("Digit");
    }
    else
    {
        printf("Special Character");
    }
    return 0;
}