#!/usr/bin/ruby
x,y,z=gets.split.map &:to_i
if z==0
	puts :wwW
elsif y==0
	if x==0||z%x>0
		puts :NO
	#else
	#	s='c'*(Z/x)+'C'*(Z/x-1)
	#	puts s.size>10000 ? :NO : s
	end
else
	if (-5000..5000).each{|a|
		b,r=(z-a*x).divmod(y)
		next if r>0||2*a.abs+2*b.abs-1>10000
		#if a>0
		#	puts 'c'*a+'C'*(a-1)'w'*b.abs
		raise
		break
	}
		puts :NO
	end
end