description Problem history Submissions question_mark Qna how_to_vote Vote #5254 upload 234 done 149 how_to_reg 143 책장 만들기 timer 1s memory 4MB upload Attempts 234 times Solved 149 times Solvers 143 people Acceptance Rate 63.7% monitoring Average Runtime 26.8ms Average Memory 3738.6KB Average Code Length 414.2B No. Submitter Result Time Memory Length Language Submitted