高中排列問題
請問此圖19題如何解
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05/10 19:16, , 1F
05/10 19:16, 1F
→
05/10 19:16, , 2F
05/10 19:16, 2F
→
05/10 19:47, , 3F
05/10 19:47, 3F
→
05/10 19:47, , 4F
05/10 19:47, 4F
推
05/10 19:50, , 5F
05/10 19:50, 5F
→
05/10 19:50, , 6F
05/10 19:50, 6F
→
05/10 19:50, , 7F
05/10 19:50, 7F
→
05/10 19:51, , 8F
05/10 19:51, 8F
推
05/11 10:18, , 9F
05/11 10:18, 9F
推
05/13 14:12, , 10F
05/13 14:12, 10F