专题文章
时长:00:00更新时间:2020-11-09 08:02:46
CODEFORCE246Div.2B题:Consider a football tournament where n teams participate. Each team has two football kits: for home games, and for away games. The kit for home games of the i -th team has color x i and the kit for away games of this team has color y i ( x
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