#include<stdio.h>
#include<stdlib.h>
int main()
{
	int N,n,i=1;
	float x,y,r,S;
	scanf("%d",&N);
	while(i<=N)
	{
		scanf("%f %f",&x,&y);
		if(x<=0)
			x=(-x);
		if(x>=y)
			r=x;
		else
			r=y;
		S=3.1415926*r*r/2;
		for(n=1;(50*n)<S;n++)
		{
		}
		printf("Property %d: This property will begin eroding in year %d.\n",i,n);
		i++;
	}
	printf("END OF OUTPUT.\n");
	system("pause");
	return 0;
}
	

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