#include<iostream>
using namespace std;
#define PI 3.1415926
int main()
{
	float i,j;
	int n,m,k;
	m=k=1;
	cin>>n;
	while(n--)
	{
		cin>>i>>j;
		while((float)(100*(m++))/PI-i*i-j*j<0)
	        continue;
		cout<<"Property "<<k++<<": This property will begin eroding in year "<<m-1<<"."<<endl;
		m=1;
	}
	cout<<"END OF OUTPUT.";
	return 0; 
}