description Problem history Submissions question_mark Qna how_to_vote Vote #4229 upload 4 done 3 how_to_reg 3 서로소 쌍의 개수 timer 2s memory 128MB upload Attempts 4 times Solved 3 times Solvers 3 people Acceptance Rate 75.0% monitoring Average Runtime 338.8ms Average Memory 31722.0KB Average Code Length 500.8B No. Submitter Result Time Memory Length Language Submitted