A = [0]*5
for i in range(5):
	A[i] = int(input())

mi = 10
sm = 0
for i in range(5):
	d = A[i] // 10
	r = A[i] % 10
	if r == 0:
		sm += (d)*10
	else:
		sm += (d+1)*10

	if r != 0 and min(mi,r) < mi:
		mi = min(mi,r)
		idx = i
		min_r = r
		min_d = d
	#print(min_r,min_d,i,sm)


print(sm - (10-min_r))