Hello, Codeforces! We are happy to invite you to an exciting online event: ICPC 2022 Online Challenge powered by HUAWEI,which will start on September 15, 2022, 00:00 UTC (UTC+0). In this Challenge, you will have a unique chance: to compete for 2 weeks online during the challenge to solve 1 or 2 problems prepared by different business domains of HUAWEI to win amazing prizes from HUAWEI! As a specia