题解 | #牛牛的平面向量#

#include <iostream>
#include <vector>
using namespace std;


class Myvector {
  public:
    Myvector(int x, int y) {
        this->x = x;
        this->y = y;
    }
    int x;
    int y;
    Myvector operator+(Myvector& v) {
        Myvector v1(0,0);
        v1.x = this->x + v.x;
        v1.y = this->y + v.y;
        return v1;
    }
    void Myprint()
    {
        cout<<this->x<<" "<<this->y;
    }
};

int main() {
    int n;
    cin >> n;
    Myvector v (0,0);
    for (int i = 0; i < n; i++) {

        int x;
        int y;
        cin >> x >> y;
        Myvector vi(x, y);
        v = v +vi;
    }
    v.Myprint();
    return 0;



}