let funRun = (w1, w2, b) => {
  let obj = {};
  obj.ga1 = w1 * -0.4 + w2 * 0.5 + b;
  obj.ga2 = w1 * -0.8 + w2 * (-0.2) + b;
  obj.gb1 = w1 * 0.5 + w2 * 1.2 + b;
  obj.gb2 = w1 * -0.4 + w2 * 2.5 + b;
  return obj;
}

nextIter = (w1, w2, b) => {
  let obj = funRun(w1, w2, b);
  if (obj.ga1 < 0) {
    w1 += -0.4;
    w2 += 0.5;
    b += 1;
  }
  if (obj.ga2 < 0) {
    w1 += -0.8;
    w2 += -0.2;
    b += 1;
  }
  if (obj.gb1 > 0) {
    w1 -= 0.5;
    w2 -= 1.2;
    b -= 1;
  }
  if (obj.gb2 > 0) {
    w1 -= -0.4;
    w2 -= 2.5;
    b -= 1;
  }

  return {w1, w2, b, obj};
}