import math
a = int(input())
b = int(input())
c = int(input())
d = int(input())
e = int(input())
l = [a, b, c, d, e]
ans = 9
n = 0
j = 0
for i in [i % 10 for i in l]:
    if i != 0 and i < ans:
        ans = i
        n = j
    j += 1
m = l.pop(n)
r = 0
for i in l:
    r += math.ceil(i / 10) * 10
print(r + m)
