#include <iostream>
#include <math.h>
using namespace std;
#define PI 3.1415926
#define EROSION_RATE 50

int main()
{
	int N;
	double x, y;
	int years;
	int i;
	
	cin >> N;
	for (i = 1; i <= N; ++i) {
		cin >> x >> y;
		years = (int)(PI * (x * x + y * y) / (2 * EROSION_RATE)) + 1;	
		cout << "Property " << i << ": This property will begin eroding in year " << years << "." << endl;
	}
	cout << "END OF OUPUT.";

	return 0;
}