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Overall Editorial

• Official 解説放送 by admin
• 5分でA-F by evima
• twitter上で行った簡易な解説 by kyopro_friends

A - Online Shopping

• Official Editorial by mechanicalpenciI
• Official Editorial by admin

B - Glass and Mug

• Official Editorial by mechanicalpenciI
• Official Editorial by admin
• 別解 by evima

C - T-shirts

• Official Editorial by mechanicalpenciI
• Official Editorial by admin
• User Editorial by nu50218
• User Editorial by kyopro_friends

D - Swapping Puzzle

• Official Editorial by leaf1415
• Official Editorial by admin
• 別解 by evima

E - Lucky bag

• Official Editorial by mechanicalpenciI
• Official Editorial by admin
• 高速化 by Nachia
• Pythonで実装するときの注意点 by hirayuu_At
• 全探索 by shinchan
• User Editorial by kyopro_friends

F - Random Update Query

• Official Editorial by leaf1415
• Official Editorial by admin
• User Editorial by potato167

G - Not Too Many Balls

• Official Editorial by leaf1415
• Official Editorial by admin