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var minimumRefill = function (plants, capacityA, capacityB) {
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  const n = plants.length;
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  let left = 0;
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  let right = n - 1;
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  let remA = capacityA;
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  let remB = capacityB;
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  let refills = 0;
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  while (left < right) {
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    const leftAmount = plants[left++];
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    const rightAmount = plants[right--];
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    if (leftAmount > remA) {
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      ++refills;
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      remA = capacityA;
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    }
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    remA -= leftAmount;
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    if (rightAmount > remB) {
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      ++refills;
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      remB = capacityB;
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    }
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    remB -= rightAmount;
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  }
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  if (left === right) {
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    const midAmount = plants[left];
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    if (remB > remA) {
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      if (remB < midAmount) ++refills;
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    } else {
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      if (remA < midAmount) ++refills;
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    }
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  }
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  return refills;
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};