#!/usr/bin/ruby

def sub(a,b)
	m=[a.size,b.size].max
	m.times.map{|i|(a[i]||0) - (b[i]||0)}
end

def checkio(exp,div)
	c=[]
	while div.size<=exp.size
		d=exp[-1]/div[-1]
		c.push(d)
		exp=sub(exp,[0]*(exp.size-div.size)+div.map{|e|e*d})
		#assert exp[-1]==0
		exp.pop
	end
	exp.pop() while exp.size>1 && exp[-1]==0
	puts exp.size-1
	puts exp*' '
end

gets
checkio(gets.split.map(&:to_i),[0,-1,0,1])