[問題]
5
3 = X
X = ?
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推
11/17 21:51, , 1F
11/17 21:51, 1F
→
11/17 22:57, , 2F
11/17 22:57, 2F
推
11/17 23:17, , 3F
11/17 23:17, 3F
→
11/18 09:47, , 4F
11/18 09:47, 4F
→
11/18 09:47, , 5F
11/18 09:47, 5F
→
11/18 09:47, , 6F
11/18 09:47, 6F