> 1005
> 
> 
> 
> 
> #include<stdio.h>
> 
> void main(){
>       double  x,y;
>       int i=1,n;
>       scanf("%d",&n);
>       for(;i<=n;i++){
>              scanf("%lf     %lf",&x,&y);
>              printf("Property %d: This property will begin eroding in year  %d.\n",i,1+int(3.1415926*(x*x+y*y)/2/50));
>        }
> }