def judge_method(fossil,array,index)
	case array[index] <=> fossil[index]
	when 1
		puts "NO"
	when -1
		puts "YES"
	when 0
		if index == fossil.size - 1
			puts "YES"
		else
			judge_method(fossil,array,index + 1)
		end
	end
end
	
fossil = gets.chomp.split(".").map(&:to_i)
judge_array = gets.chomp.split(".").map(&:to_i)
judge_method(fossil,judge_array,0)