#include<iostream.h>
#define PI 3.14
void main()
{
double x , y ;
int number , i;
cin>>number;
int *array = new int[number];
for(i = 0 ; i < number ; i++)
{
cin>>x>>y;
for(int j = 0 ; ; j++)
if(PI*(x*x + y*y) < 100 * j )
{
array[i] = j;
break;
}
}
for(i = 0 ; i < number ; i++)
{
cout<<"Property "<<i+1<<": This property will begin eroding in year "<<array[i]<<'.'<<endl;
}
cout<<"END OF OUTPUT."<<endl;
delete []array;
}