#include<stdio.h>

int main()
{
    char ch;
    scanf("%c",&ch);
    
    if((ch >= 'A' && ch <= 'z') || (ch >= 'a' && ch <= 'z'))
    {
        printf("Alphabet");
    }
    else if (ch >= '0' && c <= '9')
    {
        printf("Digit");
    }
    else
    {
        printf("Special Character");
    }
    return 0;
}