#include <iostream>
#include <stdlib.h>
using namespace std;

int main(void)
{
	int n = 0;
	double x=0, y=0;
	int years;
	cin >> n;
	for (int i = 0; i < n; i++){
		cin >>x>>y;
	    years = int(3.14*(x*x + y*y)/(2*50));
		printf("Property %d: This property will begin eroding in year %d.\n", i + 1, years+1);
	}
	cout << "END OF OUTPUT." << endl;
	system("pause");
	return 0;
}