description Problem history Submissions question_mark Qna how_to_vote Vote #2407 upload 21 done 9 how_to_reg 9 프리 소수 timer 1s memory - MB upload Attempts 21 times Solved 9 times Solvers 9 people Acceptance Rate 42.9% monitoring Average Runtime 7730.1ms Average Memory 14985.0KB Average Code Length 578.4B No. Submitter Result Time Memory Length Language Submitted