#include <stdio.h>

int main() {
    char ch;
    
    scanf(" %c", &ch);
    
    if ((ch >= 'a' && ch <= 'z') || ch >= 'A' && ch <='Z')) {
        printf("Alphabet\n");
    }
    
    else if (ch >= '0' && ch <='9') {
        printf("Digit\n");
    }
    
    else {
        printf("Special Character\n");
    }
    
    return 0;
}