#include <stdio.h>
#define PI 3.14159

main()
{
	float x,y,r;
	double R;
	unsigned short n,year;
	
	scanf("%hd",&n);
	while(n)
	{
		scanf("%f %f",&x,&y);
		r=x*x+y*y;
		for(R=0,year=0;R<r;year++)
			R=100/PI+R;
		printf("Property %hd: This property will begin eroding in year %hd.\n",n,year);
		n--;
	}
	printf("END OF OUTPUT.");
}