> #include<stdio.h>
> #include<math.h>
> #define PI 3.142
> main()
> {int i,n,year[200];
>  float x,y;
>  scanf("%d",&n);
>  for(i=0;i<n;i++)
>  {
>       scanf("%f %f",&x,&y);
>       year[i]=(int)(((x*x+y*y)*PI/2)/50+1);
>       printf("Property %d : This property will begin eroding in year %d.\n",i+1,year[i]);
>  }
>  printf("END OF OUTPUT.\n");
> }