PAT basic 1046

#include <iostream>using namespace std;int main() {    int n, jia = 0, yi = 0,jiahan, jiahua, yihan, yihua;    cin >> n;    for (int i = 0; i < n; i++) {        cin >> jiahan >> jiahua >> yihan >> yihua;        if (jiahan + yihan == jiahua && yihan + jiahan != yihua)            yi++;        if (jiahan + yihan != jiahua && yihan + jiahan == yihua)            jia++;    }    cout << jia << " " << yi;    return 0;}