第一遍写的

#include<cstdio>
#include<iostream>
using namespace std;
int main()
{
    int a,b,c,d,x;
    cin>>a>>b>>c>>d;
    x=c*60+d-(a*60+b);
    if(x>0)
    printf("O JOGO DUROU %d HORA(S) E %d MINUTO(S)",x/60,x%60);
    else
    {
        x+=1440;
        printf("O JOGO DUROU %d HORA(S) E %d MINUTO(S)",x/60,x%60);
    }
    return 0;
}

看了Y总的，改了一下，更简单一点

#include<cstdio>
#include<iostream>
using namespace std;
int main()
{
    int a,b,c,d,x;
    cin>>a>>b>>c>>d;
    x=c*60+d-(a*60+b);
    if(x<=0)
    x+=1440;
    printf("O JOGO DUROU %d HORA(S) E %d MINUTO(S)",x/60,x%60);
    return 0;
}