#include<stdio.h>
#include<math.h>
#define PI acos(-1)
int main()
{
   int n,k,i;
   double x,y;
   scanf("%d",&n);
   for (i=1;i<=n;i++)
  {
    scanf("%lf%lf",&x,&y);
    k=(int) ceil(PI*(x*x+y*y)/2/50);
    printf("Property %d: This property will begin eroding in year %d.\n",i,k);
  }
  printf("END OF OUTPUT.");
  return(0);
  }