def kuku()
	a = [1,2,3,4,5,6,7,8,9]
	b = [1,2,3,4,5,6,7,8,9]
	c = Array.new(9).map{Array.new(9)}
	9.times do |i|
		9.times do |j|
			c[i][j] = a[i] * b[j]
			puts "#{i + 1} x #{j + 1} = #{c[i][j]}"
		end
	end
end

kuku()