IsItHalloween.com Solution:

#include <stdio.h>
#include <stdlib.h>

int main(void) {
	char month[3];
	int day;
	scanf("%3s %d", month, &day);
	if((strcmp(month, "OCT") == 0 && day == 31) || (strcmp(month, "DEC")==0 && day == 25)){
		printf("yup");
	}
	else printf("nope");
	return 0;
}