solved.ac - Search

ProblemsContributeArenaRankings

Problems Users Tags

Sort

#Level Title # Solved Avg. Tries Random

#	Title	# Solved	Avg. Tries
25402	Query on a Tree	523	4.01
4195	Virtual Friends	9,923	3.63

Information

Updates (Korean) Terms of Service Privacy Policy(Old) Pro Subscription (Old) Merch

Contents

Badges Profile Backgrounds Redeem

Coins and Stardusts

Logs Exchange Coin Shop Inventory

Community · Tools

Slack · Discord BOJ scoreboard tool (Korean) BOJ Stack description tool (Korean)

Help

Documentation Rules Contribution guidelines Advanced search Request new badge / background Propose an arena

solved.ac by shiftpsh

© 2019 - 2025. 한국어 · English · 日本語 (β)

‘solved.ac’ and ‘solved’ are trademarks of shiftpsh.com registered in the Republic of Korea.
‘Baekjoon Online Judge’ is a trademark of Startlink Inc.