func main()
	var s: []char :: cui@input()
	var d: int :: 0
	var a: int :: 0
	for i(0, ^s - 1)
		if(s[i] = '.')
			do d :: ^s - i - 1
		else
			do a :* 10
			do a :+ s[i] $ int - '0' $ int
		end if
	end for
	var b: int :: 10 ^ d
	var gcd: int :: math@gcd(a, b)
	do cui@print("\{a / gcd}/\{b / gcd}\n")
end func