#!/bin/ruby require 'prime' g = gets.strip.to_i for a0 in (0..g-1) n = gets.strip.to_i # your code goes here c = Prime.take_while {|p| p <= n }.count #c = (2..n).select{|e| e.prime? and e <= n }.count if c.odd? puts 'Alice' else puts 'Bob' end end