#include<iostream>
using namespace std;
void main()
{int i,t,n;
 float x,y,area;
 cin>>n;
 for(i=1;i<=n;i++) 
  {cin>>x>>y;area=3.14*(x*x+y*y)/2;t=(int)(area/50);
   cout<<"Property "<<i<<": This property will begin eroding in year "<<t+1<<" ."<<endl;
  
 }
 cout<<"END OF OUTPUT."<<endl;

}