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

}