#include<stdio.h>
int main()
{
    char ch;
    scanf("%c");
    
    if((ch >='a' && ch <= 'z') || (ch >='A' && ch <='Z')) {
        printf("Alphabet");
    }
        else if (ch >='0' && ch <= '9') {
            printf("digit");
        }
        else {
            printf("special charcter");
         }
         return 0;
}