#include<iostream>
using namespace std;

int main()
{
	int n;
	cin>>n;
		
	for(int i=1;i<=n;i++)
	{
		float x,y;
		int z;
		cin>>x>>y;
		z=int((x*x+y*y)*3.1415926/100+1);
        cout<<"Property "<<i<<": This property will begin eroding in year "<<z<<"."<<endl;

	}
	cout<<"END OF OUTPUT."<<endl;
	return 0;
}