번호	제목
20756	Fraction
20757	Roadside optimization
20758	Wooden pipeline
20759	Cape and gun
20760	Ostap and chairs
20761	Alloys
20762	Sequential Manufacturing
20763	Closing the Borders
20764	Bonbons
20765	Witch Dance
20766	Complicated documents
20767	Antiwaist
20768	Find the radio operator
20769	Morse code
20770	Loggers Inc.
20771	Caching approximations
20772	Scheduler
20773	Text editor
20774	Crushing blow
20775	Antiplagiarism