```
#include<bits/stdc++.h>
using namespace std;
int main(){
int a,b,c,d;
cin>>a>>b>>c>>d;
int hours=c-a-1;
int sum=0;
sum=hours*60+(60-b)+d;
cout<<sum/60<<" "<<sum%60<<endl;
return 0;
}
```
# AC code
by messi_fanzzc @ 2024-03-15 13:54:51