POJ-1005 I Think I Need a Houseboat

/*
* POJ-1005  I Think I Need a Houseboat
*/

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

#define PI 3.1415926

int main()
{
    int n, i = 1;
    cin>>n;

    while (i <= n)
    {
        double x, y;
        cin>>x>>y;
        double distance = sqrt(x*x + y*y);

        int years;
        for (years = 1; true; years++)
        {
            double shrinkingArea = years * 50.0;
            double shrinkingRadius = sqrt(2 * shrinkingArea / PI);

            if (shrinkingRadius >= distance)
                break;
        }
        
        cout<<"Property "<<i++<<": This property will begin eroding in year "<<years<<"."<<endl;
    }

    cout<<"END OF OUTPUT."<<endl;
    return 0;
}