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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 - Blood Pressure

• Official Editorial by sugarrr
• Official 解説放送 by admin

B - Cycle Hit

• Official Editorial by sugarrr
• Official 解説放送 by admin

C - chokudai

• Official Editorial by sugarrr
• Official 解説放送 by admin

D - Number of Shortest paths

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

E - Red Polyomino

• Official Editorial by sugarrr
• Official 解説放送 by admin
• User Editorial by hamayanhamayan
• ポリオミノの形を埋め込む by hirayuu_At

F - Rectilinear Polygons

• Official Editorial by sugarrr
• Official 解説放送 by admin
• User Editorial by kyopro_friends