def main():
	r = [0]*5
	r[0] = int(input())
	r[1] = int(input())
	r[2] = int(input())
	r[3] = int(input())
	r[4] = int(input())

	total = 0
	mod_min = 10

	for x in r:
		div = x//10
		total += div*10
		mod = x%10
		if mod != 0:
			if mod < mod_min:
				mod_min = mod
			total+=10
		total = total - 10 + mod_min
	print(total)


if __name__ == '__main__':
    main()