class Yukicoder
  def initialize
    t, y, x = gets.chomp.split.map(&:to_i)
    m = [y,x].max
    n = [y,x].min

    answer = []

    if m > t
      puts "NO"
      return
    else
      while t > m+1
        answer << %w(> <)
        t -= 2
      end

      if (t-m).odd?
        answer << %w(^ >)
        answer << %w(^>) * (n-1)
        y -= n
        x -= n

        if y == 0 && x > 0
          answer << %w(>) * (t-n)
        elsif y > 0
          answer << %w(^) * (t-n)
        end
      else
        answer << %w(^>) * n
        y -= n
        x -= n

        if y == 0 && x > 0
          answer << %w(>) * (t-n)
        elsif y > 0
          answer << %w(^) * (t-n)
        end
      end
    end

    puts "YES"
    puts answer
  end
end

Yukicoder.new