#include <iostream>

int main() {
    int a, b, c, d;
    std::cin >> a >> b >> c >> d;

    int total_start_minutes = a * 60 + b;
    int total_end_minutes = c * 60 + d;
    int total_minutes = total_end_minutes - total_start_minutes;

    int hours = total_minutes / 60;
    int minutes = total_minutes % 60;

    std::cout << hours << " " << minutes << std::endl;
    return 0;
}    
/**************************************************************
	Problem: 1462
	User: fuyijun
	Language: C++
	Result: Accepted
	Time:15 ms
	Memory:2072 kb
****************************************************************/