структура Point

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

double getS(int x1, int y1, int x2, int y2)
{
    return sqrt( (x1 - x2)*(x1 - x2) + (y1 - y2)*(y1 - y2) );
}

struct Point{
    int x;
    int y;
};

int main()
{
    int n;
    cin >> n;
    vector<Point>mas(n);
    for (int i = 0; i < n; i++) {
        cin >> mas[i].x >> mas[i].y;
    }
    double maxDistance = 0;
    int x1, y1, x2, y2;
    for (int i = 0; i < n; i++)
    {
        for (int j = i + 1; j < n; j++)
        {
            if (maxDistance < getS(mas[i].x, mas[i].y, mas[j].x, mas[j].y))
            {
                maxDistance = getS(mas[i].x, mas[i].y, mas[j].x, mas[j].y);
                x1 = mas[i].x;
                y1 = mas[i].y;
                x2 = mas[j].x;
                y2 = mas[j].y;
            }
        }
    }
    cout << "Dots:" << x1 << " " << y1 << " and " << x2 << " " << y2 << endl;
}