모래시계(위/아래) 4/0,7/0 -> 0/4,3/4 -> 4/0,3/4 -> 1/3,0/7 -> 1/3,7/0 -> 0/4,6/1 -> 4/0,6/1 -> 0/4,2/5 7분시계의2분을재고 다시뒤집어재면 총9분이됩니다
[무물보AI] 답변 로딩중...