#include <iostream>

 #include <cstdio>

 #include <cmath>

 using namespace std;

 double a,b;

 int n;

 int main()

 {

     scanf("%d",&n);

     for(int k=;k<=n;k++)

     {

         for(int i=;i<=n;i++)

         {

             scanf("%lf%lf",&a,&b);

             int ans=(a*a+b*b)*(3.1415926)/;

             printf("Property %d: This property will begin eroding in year %d.\n",k++,ans+);

         }

         puts("END OF OUTPUT.");

     }

 }