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Overall Editorial

• Official 解説放送 by admin
• 3分でA-F by evima
• twitter上で行った簡易な解説 by kyopro_friends

A - Sanitize Hands

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

B - Uppercase and Lowercase

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

C - Sierpinski carpet

• Official Editorial by mechanicalpenciI
• Official 解説放送 by editorial_admin
• ユーザ解説 by drken

D - 88888888

• Official Editorial by mechanicalpenciI
• Official 解説放送 by editorial_admin
• User Editorial by Rssll_Krkgrd

E - Reachability in Functional Graph

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

F - Two Sequence Queries

• Official Editorial by mechanicalpenciI
• Official 解説放送 by editorial_admin
• User Editorial by noshi91

G - Stair-like Grid

• Official Editorial by Nyaan
• Official 解説放送 by editorial_admin
• User Editorial by potato167