#include <stdio.h>
#include <string.h>

float cx[1001], cy[1001];
int n;

float dist (float x1, float y1, float x2, float y2)
{ return (x1-x2) * (x1-x2) + (y1-y2) * (y1-y2); }

float signedarea (float x1, float y1, float x2, float y2, float x3, float y3)
{ return ((x2-x1)*(y3-y1) - (y2-y1)*(x3-x1))/2; }

char intersects (float xa1, float ya1, float xa2, float ya2, 
                float xb1, float yb1, float xb2, float yb2)
{ 
  return (( signedarea(xa1, ya1, xa2, ya2, xb1, yb1)
           *signedarea(xa1, ya1, xa2, ya2, xb2, yb2) <= 0)
         && ( signedarea(xb1, yb1, xb2, yb2, xa1, ya1)
             *signedarea(xb1, yb1, xb2, yb2, xa2, ya2) <= 0));
}

char clear (float x1, float y1, float x2, float y2)
{
  int i;

  for (i = 0; i < n; i ++)
    if (intersects (x1, y1, x2, y2, cx[i], cy[i], cx[(i+1)%n], cy[(i+1)%n]))
      return 0; 
  return 1;
}

int main (void)
{
  int k, K;
  int r, p, i, j;
  float rx[1001], ry[1001];
  float x, y;
  float bd;

  FILE *in = fopen ("ee.in", "r");
  fscanf (in, "%d\n", &K);
  for (k = 1; k <= K; k ++)
    {
      printf ("Data Set %d:\n", k);
      fscanf (in, "%d %d %d\n", &n, &r, &p);
      for (i = 0; i < n; i ++)
	fscanf (in, "%f %f\n", &cx[i], &cy[i]);
      for (i = 0; i < r; i ++)
	fscanf (in, "%f %f\n", &rx[i], &ry[i]);
      for (i = 0; i < p; i ++)
	{
	  fscanf (in, "%f %f\n", &x, &y);
	  bd = -1;
	  for (j = 0; j < r; j ++)
	    if (clear (x, y, rx[j], ry[j]) && 
		(bd < 0 || dist(x, y, rx[j], ry[j]) < bd))
	      bd = dist(x, y, rx[j], ry[j]);
	  if (bd > 0) printf ("%.2f\n", 1/bd);
	  else printf ("0.00\n");
	}
    }
  fclose (in);
  return 0;
}