description Problem history Submissions question_mark Qna how_to_vote Vote #1137 upload 2850 done 636 how_to_reg 537 책 복사하기 timer 1s memory 64MB upload Attempts 2850 times Solved 636 times Solvers 537 people Acceptance Rate 22.3% monitoring Average Runtime 708.4ms Average Memory 3659.9KB Average Code Length 1680.3B No. Submitter Result Time Memory Length Language Submitted