def sum(n)
  n*(n+1)/2
end

n=gets.to_i
l,r=1,n
until l>r
  m=(l+r)/2
  s=sum(m)
  if n==s
    puts "YES"
    puts m
    exit
  elsif n<s
    r=m-1
  else
    l=m+1
  end
end
puts "NO"