N, M = gets.split.map(&:to_i)
E = Hash.new { |h, k| h[k] = [] }

if M < N - 1
  puts "NO"
  exit
end

m = M
cur = 0

(N - 1).times do |u|
  E[u] << u + 1
  m -= 1
end

while m > 0 && cur < N
  es = E[cur].size

  v = cur + 2 * es + 1

  if v < N
    E[cur] << v
    m -= 1
  else
    cur += 1
  end
end

if m > 0
  puts "NO"
else
  puts "YES"
  puts [*1..N].map { |v| v.even? ? v : 1_000_000 - v }.join(' ')

  E.each do |u, nums|
    nums.each do |v|
      puts "#{u + 1} #{v + 1}"
    end
  end
end