#include<stdio.h>
int main()
{
    char ch;
    int digit;
    char sc;
    scanf("%c",&ch);
    scanf("%d",&digit);
    scanf("%c",&sc);
    if(a<=z)
    {
        printf("Alphabet")
    }
    else if (1<=num)
    {
        printf("Digit");
    }
    else 
    {
    printf("Special Character");
    }
    return 0;
}