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Overall Editorial

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C - Christmas Trees

• Official 解説 by yuto1115
• Official 解説放送 by editorial_admin
• User Editorial by miscalculation53
• Pythonのrangeを使う解法 by kemuniku

D - Glass and Mug

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

E - Repunit Trio

• Official Editorial by nok0
• Official Editorial by admin
• 別解 by 原案者 by evima
• 速い by ngtkana
• 全探索 by ngtkana

F - Cheese

• Official Editorial by physics0523
• Official 解説放送 by editorial_admin

G - Popcount and XOR

• Official Editorial by MMNMM
• Official 解説放送 by editorial_admin
• User Editorial by noimi
• User Editorial by miscalculation53
• 素朴な方針 by rsk0315