$q = 2 # This should be your qustion
data = File.open "DATA"+$q.to_s+".txt", "r"
File.delete("OUT"+$q.to_s+".txt") if(File.exist?("OUT"+$q.to_s+".txt"))
def output str
	f = File.open("OUT"+$q.to_s+".txt", "a")
	f.puts(str)
	f.close
end

def processInput number
	counter = 0
	for i in 1...number+1
		for j in i...number+1
			puts i.to_s + "  " + j.to_s
		 if i*j <= number
			 counter += 1
		 else
			 break
		 end
		end
	end
	output(counter)
	counter
end

5.times{
	|i|
	puts "Test case "+(i+1).to_s
	puts processInput data.gets.to_i
}