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Overall Editorial

• Official 解説放送 by admin

A - o-padding

• Official 解説 by yuto1115

B - Magic Square

• Official 解説 by yuto1115

C - 2x2 Placing

• Official 解説 by yuto1115

D - Teleport Maze

• Official 解説 by yuto1115
• User Editorial by Tamiji

E - Minimum Swap

• Official Editorial by MMNMM

F - Starry Landscape Photo

• Official Editorial by MMNMM

G - Linear Inequation

• Official Editorial by MMNMM
• 類題 by toam
• 形式的べき級数を用いた考察 by MMNMM