View Code of Problem 56

#include<iostream>
#include<string>
#include<math.h>
using namespace std;
int main(){
	int h1,h2,h,m1,m2,m,s1,s2,s;
	int sum,sum1,sum2;
	scanf("%d:%d:%d %d:%d:%d",&h1,&m1,&s1,&h2,&m2,&s2);
//	cout<<h1<<" " <<h2<<" "<<m1<<" "<<m2<<" "<<s1<<" "<<s2;
	sum1=h1*3600+m1*60+s1;
	sum2=h2*3600+m2*60+s2;
	sum=abs(sum2-sum1);
	h=sum/3600;
	m=(sum-3600*h)/60;
	s=sum-3600*h-m*60;
	printf("%d:%02d:%2d\n",h,m,s);
//	cout<<h<<" "<<m<<" "<<s<<endl;
	
	
	return 0;
}