Jump Game LeetCode solution in C++

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class Solution {
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 public:
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  bool canJump(vector<int> &nums) {
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    int ans = nums[0];
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    if (nums.size() > 1 && ans == 0) return false;
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    for (int i = 1; i < nums.size(); i++) {
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      ans = max(ans - 1, nums[i]);
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      if (ans <= 0 && i != nums.size() - 1) return false;
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    }
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    return true;
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  }
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};