description Problem history Submissions question_mark Qna how_to_vote Vote #1137 upload 2851 done 637 how_to_reg 538 책 복사하기 timer 1s memory 64MB upload Attempts 2851 times Solved 637 times Solvers 538 people Acceptance Rate 22.3% monitoring Average Runtime 708.2ms Average Memory 3658.9KB Average Code Length 1680.7B No. Submitter Result Time Memory Length Language Submitted