a = list(map(int, [input() for i in range(5)]))
b = [math.ceil(b / 10) * 10 for b in a]

c1 = b[0] + b[1] + b[2] + b[3] + a[4]
c2 = b[0] + b[1] + b[2] + a[3] + b[4]
c3 = b[0] + b[1] + a[2] + b[3] + b[4]
c4 = b[0] + a[1] + b[2] + b[3] + b[4]
c5 = a[0] + b[1] + b[2] + b[3] + b[4]

print(min([c1, c2, c3, c4, c5]))