i tried in ruby up to 1 million (1 billion was taking too long)

    File.write("check.rb", (["if i == 0\n  puts :even"] + (1..1_000_000).map { |i| "elsif i == #{i}\n  puts :#{i % 2 == 0 ? "even" : "odd"}" } + ["end\n"]).join("\n"))

and added at the top

    i = ARGV.first.to_i

but i'm getting SIGILL

    fish: Job 1, 'ruby check.rb 0' terminated by signal SIGILL (Illegal instruction)