← North America Division Championship

North America Division Championship 2021

Problem set · 13 problems

• AAlien Microwave
• BAnother Substring Query Problem
• CBorders
• DCircle of Friends
• EFinding Polly
• FInvestigating Imposters
• GLaptop Sticker
• HLongest Common Substring
• ISimple Cron Spec
• JSurveillance
• KTrain Line
• LWindow Shopping
• MYou Be the Judge!