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

using namespace std;

int main()
{
	int nCount;
	double x, double y;
	cin >> nCount;
	
	double nSquare;

	for(i = 1; i <= nCount; ++i)
	{		
		cin >> x >> y;			
		nSquare = (x * x + y * y) * 3.1415926  / 2;

		int nResult = nSquare / 50;
		if (((int)(nSquare * 10)) % 10 != 0)
			nResult += 1;
		if(nResult == 0)
			nResult = 1;
		cout << "Property "<< i <<": This property will begin eroding in year "<< nResult << endl;

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