View Code of Problem 56

#include<iostream>
#include<cstdio>
#include<math.h>

using namespace std;

int main()
{
	int h1, m1, s1;
	int h2, m2, s2;
	int t1, t2;
	scanf("%d:%d:%d", &h1, &m1, &s1);
	scanf("%d:%d:%d", &h2, &m2, &s2);
	t1 = h1 * 3600 + m1 * 60 + s1;
	t2 = h2 * 3600 + m2 * 60 + s2;
	t1 = abs(t1 - t2);
	h1 = t1 / 3600;
	t1 %= 3600;
	m1 = t1 / 60;
	s1 = t1 % 60;
	printf("%d:%02d:%02d", h1, m1, s1);
	return 0;
}