#include<bits/stdc++.h> using namespace std; int main() { int a,b,c,d,e,f,g,h; double i; cin>>a>>b>>c>>d; a=a60; c=c60; e=a+b; f=c+d; g=f-e; h=g/60; i=g%60; cout<<h<<" "<<i; return 0; }

#include <bits/stdc++.h>
#define int long long 
using namespace std;
int n[100],n2,n3;
signed main(){ 
	for(int i=1;i<=4;i++){
		cin>>n[i];
		if(i%2!=0) n[i]*=60;
	}
	n2=n[1]+n[2],n3=n[3]+n[4];
	n2=n3-n2,n3=n2/60,n2=n2%60;
	cout<<n3<<" "<<n2<<"\n";
	return 0;
}

#include<bits/stdc++.h> using namespace std; int main(){ int a,b,c,d,e,f,g,h; double i; cin>>a>>b>>c>>d; a=a60; c=c60; e=a+b; f=c+d; g=f-e; h=g/60; i=g%60; cout<<h<<" "<<i; return 0; }

好样的！你已经做到这样的题了，相信我，你能自己做出来的！！！