okrujnosti

#include <iostream>
#include <cmath>

using namespace std;


struct Circle {
    double x, y, r;
};

int main() {
    Circle c1, c2;

    cout << "Vavedi x, y, r za pуrvata: ";
    cin >> c1.x >> c1.y >> c1.r;

    cout << "Vavedi x, y, r za vtorata: ";
    cin >> c2.x >> c2.y >> c2.r;

    double d = sqrt(pow(c2.x - c1.x, 2) + pow(c2.y - c1.y, 2));


    double sumR = c1.r + c2.r;
    double diffR = abs(c1.r - c2.r);


    if (d == 0) {
        cout << "Koncentrichni" << endl;
    } else if (d > sumR) {
        cout << "Vanshani (ne se dopirat)" << endl;
    } else if (d == sumR) {
        cout << "Dopirashti se vanshno" << endl;
    } else if (d == diffR) {
        cout << "Dopirashti se vatreshno" << endl;
    } else if (d < diffR) {
        cout << "Vatreshni" << endl;
    } else {
        cout << "Sekushti" << endl;
    }

    return 0;
}