time=[]
for i in range(5):
  time.append(input())

num=[]
min=10
  
for list in time:
  if list%10==0:
    num.append(list)
  else:
    num.append(list+(10-list%10))
    if min>list%10:
      min=list%10

print(sum(num)-(10-min))
  
  

