#include<stdio.h>
#include<math.h>
void main()
{
float a,b,pi=3.1415926,r;
int y,no=1;
scanf("%f %f\n",&a,&b);
if(a>0)
{
 r=a*a+b*b;
 y=ceil(r*pi/50);
printf("Property %d:This property will begin eroding in year %d\n",no,y);
scanf("%f %f\n",&a,&b);
no++;
}
printf("END OF OUTPUT.");
}

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