#include <iostream>
#include <cmath>
#include <graphics.h>
using namespace std;
int main()
{
    float x, y, x1, y1, R;
    float i = 0;
    cout <<"write R: ";
    cin >> R;

    initwindow(100*R+100,100*R+100); //oci koordinat
    setfillstyle(1,15);
    line(0,50*R+50,100*R+100,50*R+50);
    line(50*R+50,0,50*R+50,100*R+100);
    line(50*R+50,0,50*R+40,10);
    line(50*R+50,0,50*R+60,10);
    line(100*R+100,50*R+50,100*R+90,50*R+60);
    line(100*R+100,50*R+50,100*R+90,50*R+40);

    setcolor(15); //krug
    circle(50*R+50,50*R+50,R*50);
    circle(50*R+50,50*R+50,R*50+1);


    setfillstyle(1,15); //ogranichenie
    line(50,50*R+50,50*R+50,50);

    setfillstyle(1,8);
    floodfill(50,100*R+90,15);  //zalivka oblostei
    setfillstyle(1,8);
    floodfill(50+25*R,50+25*R,15);
    setfillstyle(1,8);
    floodfill(75*R+75,75*R+75,15);

    while (i > 0)
    {
        cout <<"write x: ";
        cin >> x;
        cout <<"write y: ";
        cin >> y;

        if (((x >= 0) and (y <= 0) and (x*x + y*y <= R*R)) or ((x*x + y*y <= R*R) and (x <= 0) and (y >= 0) and (x <= y - R)) or ((x*x + y*y >= R*R) and (x <= 0) and (y <= 0)))
        {
            x1 =  50*R + 50 + x*50; // tochki
            y1 = 50*R +50 - y*50;
            setcolor(10);
            circle(x1,y1,3);
            setfillstyle(1,10);
            floodfill(x1,y1,10);
            cout << "vi popali " <<"\n";
        }
        else
        {
            x1 =  50*R + 50 + x*50; //tochki
            y1 = 50*R +50 - y*50;
            setcolor(12);
            circle(x1,y1,3);
            setfillstyle(1,12);
            floodfill(x1,y1,12);
            cout << "no:( " <<"\n";
        }
        i -= 1;
    }
    getch();
    closegraph();
    return 0;
}