#include <iostream>

#include <cmath>

using namespace std;

#define PI  3.1415

int main()

{

    int k, a = 1, year;

    double s, x, y;

    cin >> k;

    while (k--)

    {

        cin >> x >> y;

        s = (PI / 2)*(x*x + y*y);

        year = s / (double)50 + 1;

        cout << "Property " << a++ << ": This property will begin eroding in year " << year << "." << endl;

    }

    cout << "END OF OUTPUT." << endl;

    system("pause");

    return 0;

}