#!/usr/bin/env ruby
kazu=[2,4,6,8,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54]
kyoka=["算数","体育","理科","図工","社会"]
printf("%d\n",kazu[1])
printf("%s\n",kyoka[1])

srand
suzi=rand(26)
printf("%d\n",kazu[suzi])