学步园

#include<cstdio>
#define PI 3.1415926
int main() {
   freopen("poj1005.txt", "r", stdin);
   int n;
   scanf("%d", &n);
   double x, y;
   for(int k = 0; k < n; ++ k) {
      scanf("%lf%lf", &x, &y);
      printf("Property %d: This property will begin eroding in year %d.\n", k + 1, (int)(PI*(x*x + y*y)/100) + 1);
   }
   printf("END OF OUTPUT.\n");
   return 0;
}