float x[] = new float[10];
float y[] = new float[10];
int s = 10;

void setup() {
  size(400, 400);
  background(255, 245, 245);
  fill(200, 0, 0, 10);
  smooth();
  noStroke();

  for (int i = 0; i < 10; i++) {
    x[i] = width/2;
    y[i] = height/2;
  }
}

void draw() {
  for (int i = 0; i < 10; i++) {
    x[i] = x[i] + random(-5, 5);
    y[i] = y[i] + random(-5, 5);
    ellipse(x[i], y[i], s, s);
  }
}