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

list_inp = [a,b,c,d,e]
min_last = 100
for index, inp in enumerate(list_inp):
  tmp = int(str(inp)[-1])
  if tmp == 0:
    continue
  
  if tmp <= min_last:
    min_last = tmp
    min_last_index = index

# 全部の料理がちょうど１０分単位だった場合
if min_last == 100:
  min_last = 0

# 切り上げ
def ceil(src,range):
  if str(src)[-1] == '0':
    return src
  else:
    return ((int)(src / range) + 1 ) * range

ans = 0
for index,value in enumerate(list_inp):
  if index == min_last_index:
    continue
  else:
    ans += ceil(value, 10)


print(ans + list_inp[min_last_index])