01. Guinea Pig

function guineaPig(array) {
  let gram = 1000;
  let month = 30; //days
  let copyArray = array.slice();
  let quantityFood = copyArray.shift() * gram;
  let hay = Number(copyArray.shift()) * gram; // сено
  let cover = Number(copyArray.shift()) * gram;
  let weight = Number(copyArray.shift()) * gram;
  let isEnough = true;

  for (let day = 1; day <= month; day++) {
    quantityFood -= 300;

    if (quantityFood <= 0 || hay <= 0 || cover <= 0) {
      isEnough = false;
      break;
    }

    if (day % 2 === 0) {
      hay -= quantityFood * 0.05;
    }

    if (day % 3 === 0) {
      cover -= weight / 3;
    }
  }
  if (!isEnough) {
    console.log(`Merry must go to the pet store!`);
  } else {
    console.log(
      `Everything is fine! Puppy is happy! Food: ${(
        quantityFood / gram
      ).toFixed(2)}, Hay: ${(hay / gram).toFixed(2)}, Cover: ${(
        cover / gram
      ).toFixed(2)}.`
    );
  }
}