#include <stdio.h>
#include <math.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
	if(argc != 2)
	{
		printf("Usage: %s <year>\n  Calculates date for Easter in year <year>.\n", argv[0]);
		return 1;
	}
	int year = atoi(argv[1]);
	int a = year % 19;
	int b = floor(year / 100);
	int c = year % 100;
	int d = floor(b / 4);
	int e = b % 4;
	int f = floor((b + 8) / 25);
	int g = floor((b - f + 1) / 3);
	int h = (19 * a + b - d - g + 15) % 30;
	int i = floor(c / 4);
	int k = c % 4;
	int l = (32 + 2 * e + 2 * i - h - k) % 7;
	int m = floor((a + 11 * h + 22 * l) / 451);
	int month = floor((h + l - 7 * m + 114) / 31);
	int day = ((h + l - 7 * m + 114) % 31) + 1;
	char *months[] = {"March", "April"};
	printf("%s %d, %d\n", months[month-3], day, year);
}