import math
src = [input() for _ in range(5)]
k_li = []
v_li = []
sum = 0
for s in src:
    if int(s[-1]) != 0:
        k_li.append(int(s[-1]))
        v_li.append(int(s))
    else:
        sum += int(s)
m = min(k_li)
flag = False
if len(k_li)>0:
    for k,v in zip(k_li,v_li):
        if k == m and flag == False:
            sum += v
            flag = True
        else:
            sum += math.ceil(v/10)*10
print(sum)