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3not's Introduction

3not問題

  • 総当たりで頑張って計算すると解けるようだ
  • 01010101, 00110011, 00001111からand/or/notで計算できるパタンを全部数えあげる
  • notは2回だけしか使わない

計算方法

  • % ruby 3not.rb > out.rb
  • % ruby out.rb

アルゴリズム解説

  • 入力A〜Cは000から111までの8パタンがある
  • 000から111までのそれぞれに対してどういう出力が出るかというパタンを考える
  • 入力Aそのままだとパタンは01010101になる
  • 入力Bは00110011, 入力Cは00001111
  • これらのみっつに対してnot, and, orを適用して not(A), not(B), not(C)を出力できればいい
  • 10101010みたいなのが出ればこれは not(A)になる
  • ひたすら総当たりして not(A), not(B), not(C) を出力できればいい

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