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

// 點(diǎn)類(lèi)
class Pointer {

    private:
        int x;  // x 坐標(biāo)
        int y;  // y 坐標(biāo)

    public:
        void setX(int x) {
            this->x = x;
        }

        int getX() {
            return x;
        }

        void setY(int y) {
            this->y = y;
        }

        int getY() {
            return y;
        }

};

// 圓類(lèi)
class Circle {

    private:
        Pointer center; // 圓心
        int radius; // 半徑

    public:
        void setCenter(int x, int y) {
            center.setX(x);
            center.setY(y);
        }

        void setRadius(int radius) {
            this->radius = radius;
        }

        // write your code here......
        void isPointerInCircle(Pointer p){
            int n = sqrt(pow((p.getX()-center.getX()),2) + pow((p.getY()-center.getY()),2));
            if(radius < n){
                cout <<  "out";
            }else if(radius == n){
                 cout << "on";
            }else{
               cout << "in";
            }
        }

};

int main() {

    // 鍵盤(pán)輸入點(diǎn)的坐標(biāo)
    int x, y;
    cin >> x;
    cin >> y;

    // 創(chuàng)建一個(gè)點(diǎn)
    Pointer p;
    p.setX(x);
    p.setY(y);

    // 創(chuàng)建一個(gè)圓
    Circle c;
    c.setCenter(5, 0);
    c.setRadius(5);

    // 判斷點(diǎn)和圓的關(guān)系
    c.isPointerInCircle(p);

    return 0;
}