OJ Board

#include<stdio.h>

int main()
{
long int i,h1,m1,h2,m2,H,M,time;
for(i=1;;i++)
{
scanf("%ld %ld %ld %ld",&h1,&m1,&h2,&m2);
if(h1==0)
{
h1=24;
}
if(h2==0)
{
h2=24;
}
if(h1<h2&&m1<=m2)
{
H=h2-h1;
M=m2-m1;
time=H*60+M;
printf("%ld\n",time);
}
if(h1<h2&&m2<m1)
{
H=(h2-(h1+1));
M ...