puncte

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

typedef struct
{
    float x, y;
} PUNCT;

int main()
{
    float maxi = 0.0;
    PUNCT p[100];
    int n, papx = 0;
    cin >> n;
    for (int i = 0; i < n; i++)
        cin >> p[i].x >> p[i].y;

    for (int i = 0; i < n; i++)
        if (!p[i].y)
            papx++;
    cout << "apartin lui Ox: " << papx << endl;

    for (int i = 0; i < n; i++)
        for (int j = 0; j < n; j++)
            if (i != j)
            {
                float d = sqrt((p[i].x - p[j].x) * (p[i].x - p[j].x) + (p[i].y - p[j].y) * (p[i].y - p[j].y));
                if (maxi < d)
                    maxi = d;
            }

    cout << "distanta maxima: " << maxi;
    return 0;
}