description Problem history Submissions question_mark Qna how_to_vote Vote #9149 upload 394 done 207 how_to_reg 189 파일입출력 - 연습문제4 timer 1s memory 32MB upload Attempts 394 times Solved 207 times Solvers 189 people Acceptance Rate 52.5% monitoring Average Runtime 4.7ms Average Memory 862.9KB Average Code Length 660.4B No. Submitter Result Time Memory Length Language Submitted