import patterns;

defaultpen(0.5);
bbox(white, Fill);
size(1024, 0);

real v = stdin;
int n = stdin;

path a;
for (int i = 0; i < n; ++i) {
  real x = stdin;
  real y = stdin;
  a = a -- (x,y);
}

real r = stdin;
real x = stdin;
real y = stdin;

filldraw(a -- cycle, black, fillpen=lightgrey);
filldraw(circle((x, y), r*v), green, fillpen=green+opacity(0.5));

shipout(bbox(xmargin=5, white, Fill));