solved.ac - Search

ProblemsContributeArenaRankings

Problems Users Tags

Sort

#Level Title # Solved Avg. Tries Random

#	Title	# Solved	Avg. Tries
1557	제곱 ㄴㄴ	1,683	2.68
7501	Key	275	3.74
8464	Non-Squarefree Numbers	650	3.38

Information

Pro Subscription Merch Updates (Korean) Terms of Service Terms for Recurring Payment Privacy Policy

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

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

Solved Company · CEO Suhyun Park (박수현)

Room #302, 15 Daeheung-ro 20an-gil, Mapo-gu, Seoul, Republic of Korea 04136

Company Registration # 413-01-65278 · Mail-order Business Registration # 2023-서울마포-0839 · +82 10-8481-7347 · Check business information

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