https://leetcode.com/contest/biweekly-contest-30/problems/stone-game-iv/
Stone game 1-https://youtu.be/YVmTjwBjYwo
Stone game 2-https://youtu.be/6hu5G-abkdg
Stone game 3-https://youtu.be/HsY3jFyaePU
Stone game 4-https://youtu.be/rS7Ua0GmCYc
Stone game 5-https://youtu.be/ysmpcUCW0sM
Stone game 6-https://youtu.be/IgS1vVfaSPs
Stone game 7-https://youtu.be/-2KwH0-pwgA
