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Overall Editorial

• Official 解説放送 by admin
• twitter上で行った簡易な解説 by kyopro_friends

A - camel Case

• Official Editorial by mechanicalpenciI
• Official Editorial by admin

B - Trimmed Mean

• Official Editorial by mechanicalpenciI
• Official Editorial by admin
• より高速な解法 by MMNMM

C - LRUD Instructions 2

• Official Editorial by kyopro_friends
• Official Editorial by admin
• ユーザ解説 by drken

D - Flip Cards

• Official Editorial by kyopro_friends
• Official Editorial by admin

E - Find Permutation

• Official Editorial by kyopro_friends
• Official Editorial by admin
• User Editorial by Kazu1998k

F - Teleporter and Closed off

• Official Editorial by mechanicalpenciI
• Official Editorial by admin
• より高速な解法 by MMNMM
• User Editorial by ngtkana

G - OR Sum

• Official Editorial by mechanicalpenciI
• Official Editorial by admin
• 定数倍の軽い解法 by MMNMM

Ex - Balanced Tree

• Official Editorial by kyopro_friends
• Official Editorial by admin
• 正誤判定プログラムの実装 by kyopro_friends