# Template (deprecated) ###### tags: ## Problem ### Sample Input ```javascript ``` ### Sample Output ```javascript ``` <br> :::spoiler **Optimal Space & Time Complexity** ``` ``` ::: <br> :::spoiler Hint 1 ::: <br> :::spoiler Hint 2 ::: <br> :::spoiler Hint 3 ::: <br> <hr/> ## Solutions ### Official ```javascript= ``` <br> --- ### Everyone's :::spoiler 月 ```javascript= ``` ::: <br> :::spoiler Raiy ```javascript= ``` ::: <br> :::spoiler Becky ```javascript= ``` ::: <br> :::spoiler 東 ```javascript= ``` ::: <br> :::spoiler Hao ```javascript= ``` ::: <br> :::spoiler YC ```javascript= ``` ::: <br> :::spoiler SOL ```javascript= ``` ::: --- ## Supplement / Discussion