a = int(input())
b = int(input())
c = int(input())
d = int(input())
e = int(input())

cooking_time = [a,b,c,d,e]

mindiv10 = min(list(filter(lambda n:n>0, [x%10 for x in cooking_time])))

# search
last_food = 0
for x in cooking_time:
    if x%10 == mindiv10:
        last_food = x
        
cooking_time.remove(last_food)

time = 0
for x in cooking_time:
    time += x + (0 if x%10==0 else 10-x%10)

time += last_food

print(time)