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var removeOccurrences = function (s, part) {
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  let stack = [];
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  for (let c of s) {
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    stack.push(c);
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    if (
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      stack.length >= part.length &&
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      stack[stack.length - 1] == part[part.length - 1]
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    ) {
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      let temp = [];
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      for (let i = 0; i < part.length; i++) {
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        temp.push(stack.pop());
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      }
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      temp.reverse();
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      if (temp.join("") != part) {
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        for (let c of temp) {
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          stack.push(c);
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        }
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      }
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    }
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  }
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  let ans = [];
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  while (stack.length > 0) {
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    ans.push(stack.pop());
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  }
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  ans.reverse();
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  return ans.join("");
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};