<!-- Note - Any content mentioned below in `<!-- ->` blocks are just comments to help you fill-up the issue. It won't be visible in the actual issue after you click on submit. --> #### Your LeetCode username <!-- Your LeetCode username --> #### Category of the bug - [ ] Question - [ ] Solution - [ ] Language - [ ] Missing Test Cases #### Description of the bug <!-- A clear and concise description of what the bug is. --> #### Code you used for Submit/Run operation <!-- Please make sure you wrap your code with ``` tags. Otherwise we may reject your request. --> ``` // Two Sum class Solution { public: vector<int> twoSum(vector<int> &a, int s) { } }; ``` #### Language used for code <!-- C++ --> #### Expected behavior <!-- A clear and concise description of what you expected to happen in contrast with what actually happened. --> #### Screenshots <!-- If applicable, add screenshots to explain your issue. --> #### Additional context <!-- Add any other additional context about the bug. -->