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class Solution {
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 public:
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  vector<int> ans;
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  vector<int> res;
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  Solution(vector<int> &nums) {
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    ans = nums;
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    res = nums;
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  }
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  vector<int> reset() {
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    return res;
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  }
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  vector<int> shuffle() {
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    next_permutation(ans.begin(), ans.end());
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    return ans;
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  }
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};