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/**
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 * @param {number[]} answers
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 * @return {number}
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 */
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var numRabbits = function (answers) {
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  var totalRabbits = 0;
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  var sumOfLikeAnswers = new Array(1000).fill(0);
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  for (let i = 0; i < answers.length; i++) {
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    sumOfLikeAnswers[answers[i]] += 1;
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  }
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  for (let i = 0; i < sumOfLikeAnswers.length; i++) {
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    totalRabbits += Math.ceil(sumOfLikeAnswers[i] / (i + 1)) * (i + 1);
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  }
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  return totalRabbits;
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};