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class Solution {
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 public:
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  int subtractProductAndSum(int n) {
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    vector<int> digit;
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    int product = 1;
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    int sum = 0;
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    while (n > 0) {
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      digit.push_back(n % 10);
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      n /= 10;
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    }
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    for (int i = 0; i < digit.size(); i++) {
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      product *= digit[i];
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      sum += digit[i];
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    }
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    return product - sum;
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  }
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};