#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' && ch <= '9')
    {
        printf("Digit");
    }
    else
    {
        printf("Special Character");
    }
    return 0;
}