1005POJ

#include<iostream>
using namespace std;
const double pi=3.141592653;
int main() 
{
	int num;
	cin>>num;
	for(int i=0;i<num;i++)
	{
		double x,y;
		cin>>x>>y;
		double sum;
		sum=pi*(x*x+y*y)/2;
		int year=1;
		for(year=1;year>0;year++)
		if(sum<=year*50)
		break;
		cout<<"Property "<<i+1<<": "<<"This property will begin eroding in year "<<year<<"."<<endl; 
	}
        cout<<"END OF OUTPUT."<<endl; 
	    return 0;
}