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var scoreOfStudents = function (s, answers) {
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  let correct = s
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      .split("+")
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      .reduce((a, c) => a + c.split("*").reduce((b, d) => b * d, 1), 0),
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    n = s.length,
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    dp = [...Array(n)].map((d) => [...Array(n)]);
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  let dfs = (i = 0, j = n - 1) => {
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    if (dp[i][j] !== undefined) return dp[i][j];
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    if (i === j) return (dp[i][j] = [Number(s[i])]);
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    let ans = new Set();
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    for (let k = i + 1; k <= j - 1; k += 2)
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      for (let a1 of dfs(i, k - 1))
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        for (let a2 of dfs(k + 1, j))
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          if (s[k] === "*") ans.add(Number(a1) * Number(a2));
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          else ans.add(Number(a1) + Number(a2));
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    return (dp[i][j] = Array.from(ans).filter((d) => d <= 1000));
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  };
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  dfs();
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  dp[0][n - 1] = new Set(dp[0][n - 1]);
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  return answers.reduce(
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    (a, c) => a + (c === correct ? 5 : dp[0][n - 1].has(c) ? 2 : 0),
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    0
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  );
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};