#include<stdio.h>
int main()
{
    char ch;
    scanf(" %c", &ch);
    if ((ch >= 'a' && ch <= 'Z') || (ch >= 'A' && ch <= 'Z'))
    {
        print("Alphabet\n");
    }
    else if (ch >= '0' && ch <= '9'){
        printf("Digit\n");
    }
    else
    {
        print("Special charecter\n");
    }
    return 0;
}