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JOI直前C++講座 
僕が考える競技プログラミング
どこまでわかりますか? 
• ループ制御 
• 配列 
• 文字列操作 
• 関数 
• ポインタ 
• クラス 
• STL
競技での問題 
• さっきの項目が理解できているか 
• それぞれを組み合わせて 
• アルゴリズムを知っているか 
• 全部組み合わせて
ある程度までは 
知っているかどうか
それからは熟練度次第
競技のいいところ 
• 解けたら嬉しいから頑張る 
• プログラミングの基礎が身につく 
• 勉強したことがゲームやアプリ開発で役に立つ
僕が考える伸ばし方 
• 競技の大会に備えて数ヶ月前から勉強を始める 
(新しいことを学ぶ) 
• 終わったらそれを活かしてゲームやアプリなど 
作品を作る
今日教えること 
• クラスの話を少し 
• STLについて 
• Sort 
• Vector
1問目 
• ある学校の入学試験を行う。点数の低い順に生 
徒の点数を並べなさい。 
• 入力の点数は整数で入力される 
• 出力は「点数」の形式で縦に並べて
2問目 
• ある学校では数学と英語を入試に用い、数学の 
点数が優先される。数学の点数が同じなら英語 
が良い方が優先される。並び替えろ。 
• 入力は名前と数学と英語の点数が各人 
• 出力は「名前 数学 英語」

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12/12 C++講座