func main()
	var N: int :: cui@input().toInt(&)
	var ans: []char :: ""
	while a(true)
		do ans :~ "\{N % 7}"
		do N :/ 7
		if(N = 0)
			break a
		end if
	end while
	do ans.reverse()
	do ans :~ "\n"
	do cui@print(ans)
end func