#include <iostream>
#include <cmath>
#include <math.h>

using namespace std;

bool adlv(double cx, double cy, double r, double x, double y)
{
    if ((x + cx)*(x + cx) + (y + cy)*(y + cy) < r)
        return true;
    else
        return false;
}

int main()
{
    double cx, cy, x, y, r;
    cin >> cx >> cy >> r >> x >> y;
    cout << adlv(cx, cy, r, x, y);
    system("pause");
    return 0;
}