1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
#include <cstdio>

int main(void)
{
	unsigned x, d, h, m;
	scanf("%u%u%u%u", &x, &d, &h, &m);
	unsigned start = ((d - 24) * 24 + h) * 60 + m;
	unsigned end = x * 24 * 60;
	if (x == 5) {
		end += 24 * 60;
		if (d < 29 || (d == 29 && h <= 2))
			end -= 60;
	}
	printf("%u\n", end - start);
	return 0;
}