#include<stdio.h>
#include<ctype.h>
int main()
{
    char ch;
    scanf("%c",&ch);
    if(isalpha(ch)){
        printf("ALphabet");
    }
    else if(isdigit(ch)){
        printf("Digit");
    }
    else
    {
        printf("Special characater");
    }
    return 0;
    }
}