package demo1005;

import java.util.Scanner;

public class Main {

    
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        
        while(input.hasNext())
        {
            int n = input.nextInt();
            for(int i=0;i<n;i++)
            {
                double x = input.nextFloat();
                double y = input.nextFloat();
                double s = Math.PI*(Math.pow(x, 2)+Math.pow(y, 2))/2;
                int count=0;
                while(s>0)
                {
                    s=s-50;
                    count++;
                }
                 System.out.println("Property " + i   
                            + ": This property will begin eroding in year " + count+".");   
            }
             System.out.println("END OF OUTPUT."); 
        }

    }

}