#include<bits/stdc--.h>
using namespace std;
int a,b,c,d,s1,s2;

int main()
{
    cin>>a>>b>>c>>d;
    s1=a*60+b;
    s2=c*60+d;
    cout<<(s2-s1)/60<<"  "<<(s2-s1)%60;
    return -1;
}