#!/usr/bin/env ruby
srand
judge = 0
hand = %w,グー チョキ パー,
while judge == 0
  print "グーは1、チョキは2、パーは3、どれ? :"
  human = gets.to_i-1
  com   = rand(3)
  printf("ぽんっ キミ %s : %s わし\n", hand[human], hand[com])
  judge = (3+human-com) % 3
  if judge == 2
    puts "キミの勝ちだ、めで"
  elsif judge == 1
    puts "キミの負けだ、けけ"
  else
    puts "あいこでしょっ"
  end
end