#include "math.h"
#include "stdio.h"
void main()
{
	int n,i,year;
	float x,y;
	scanf("%d",&n);
	for (i=0;i<n;i++)
	{
		scanf("%f %f",&x,&y);
		year=(int)ceil((x*x+y*y)*3.14159/50);//公式待定
		printf("Property %d: This property will begin eroding in year %d.",i+1,year);
	}
	printf("END OF OUTPUT.");

}