for i in input:
	o = 0
	p = False
	a = i.split()

	c = 0
	#start position
	x = 0
	y = 0

	for j in i:
		if j != " ":
			if j == "R":
				x += 1
			if j == "L":
				x -= 1
			if j == "U":
				y += 1
			if j == "D":
				y -= 1
			o += 1

		res = str(x) + " " + str(y)

		if o == len(a):
			p = True

	while p == True:
		a = res.split()

		x = int(a[0])
		y = int(a[1])
		for k in range(o):
			if x != 0:
				if x > 0:
					x -= 1
				if x < 0:
					x += 1
				c += 1
			if y != 0:
				if y > 0:
					y -= 1
				if y < 0:
					y += 1
				c += 1

			if p == False:
				break

			if x == 0 and y == 0:
				print(c)
				p = False