OJ Board

#include<stdio.h>
#include<math.h>

int main()
{
int i,j,k,l,mn,hor,n,H,M,m;
while(scanf("%d",&n)>0)
{
for(i=0;i<n;i++)
{
scanf("%d:%d",&H,&M);
if(H<12)
{
mn=60-M;

if(mn>0)
hor=12-1-H;

if(mn==0)
hor=12-H;

}
if(H==12)
{
mn=60-M;
if(mn==0)
hor=H;
if(mn>0)
hor=H-1;
}
if ...