#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;
}