description Problem history Submissions question_mark Qna how_to_vote Vote #4910 upload 309 done 168 how_to_reg 145 단순 뒤집기 timer 1s memory 128MB upload Attempts 309 times Solved 168 times Solvers 145 people Acceptance Rate 54.4% monitoring Average Runtime 24.1ms Average Memory 3361.9KB Average Code Length 482.1B No. Submitter Result Time Memory Length Language Submitted