> #include <stdio.h>
> #include <math.h>
> int main()
> {
> 	double PI=3.1415926,a,b,total;
> 	int n;
> 	__int64 year;
> 	scanf("%d",&n);
> 	for(int i=1;i<=n;++i)
> 	{
> 		scanf("%lf %lf",&a,&b);
> 	    total=PI*(a*a+b*b)/2;
> 		total/=50;
> 		total+=1;
> 		year=total+1e-6;
> 		printf("Property %d: This property will begin eroding in year %I64d.\n",i,year);
> 	}
> 	printf("END OF OUTPUT.\n");
> }