Welcome to [Biweekly Contest 80](/contest/biweekly-contest-80)! Feel free to share and post your contest experience here!\n\nYou can also view the rankings for the contest [here](/contest/biweekly-contest-80/ranking).\n\nLinks to the individual problems are included below:\n\n[Strong Password Checker II](/problems/strong-password-checker-ii) (3 points)\n\n[Successful Pairs of Spells and Potions](/problems/successful-pairs-of-spells-and-potions) (4 points)\n\n[Match Substring After Replacement](/problems/match-substring-after-replacement) (6 points)\n\n[Count Subarrays With Score Less Than K](/problems/count-subarrays-with-score-less-than-k) (6 points)\n\n---\n\n\u2753 Do you enjoy the contest? \nClick <a href="https://form.nativeforms.com/KJjYx0jZmMDevRTNw0Db" target="_blank">\uD83D\uDC49 HERE\uD83D\uDC48 </a> to fill out a quick survey and help LeetCode provide a better contest experience.\n\n\n---\n \n\n\n<a href="https://www.leetcode.com/track/?data=eyJ1cmwiOiAiaHR0cHM6Ly9sZWV0Y29kZS5jb20vZGlzY3Vzcy9nZW5lcmFsLWRpc2N1c3Npb24vMTUxMTI3NC90aGluay15b3UtZ290LXdoYXQtaXQtdGFrZXMtdG8td29yay1hdC1sZWV0Y29kZT9yZWY9Y3AiLCAidXVpZCI6ICJodHRwczovL2xlZXRjb2RlLmNvbS9kaXNjdXNzL2dlbmVyYWwtZGlzY3Vzc2lvbi8xNTExMjc0L3RoaW5rLXlvdS1nb3Qtd2hhdC1pdC10YWtlcy10by13b3JrLWF0LWxlZXRjb2RlP3JlZj1jcCJ9 " target="_blank"><img src="https://assets.leetcode.com/static_assets/others/Ad_Banner.png" width="800px" /></a>\n \n\n

Welcome to Biweekly Contest 80! Feel free to share and post your contest experience here!\n\nYou can also view the rankings for the contest here.\n\nLinks to th