// editor4
#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;
}2