C++ :

#include <iostream> 
using namespace std;
int main(){
	int a,b,c,d;
	cin>>a>>b>>c>>d;
    int u_time = (c * 60 + d) - (a * 60 + b);
	int hour = u_time / 60;
    int minute = u_time % 60;
	cout << hour << " " << minute << endl;
	return(0);
}

Python :

# coding=utf-8
a,b,c,d=input().split()
e=int(c)-int(a)
x=int(d)-int(b)
if x<0:
    f=int(d)+60-int(b)
    e=e-1
else:
    f=x

print(e,f)