l=[input() for _ in range(5)]
l_1=[]
for i in l:
  if i%10!=0:
    l_1.append(((i+9)//10)*10)
  else:l_1.append(i)
nnn=9999999    
for i in range(5):
  num_1=0
  for j in range(5):
    if i==j:
      num_1+=l[j]
    else:num_1+=l_1[j]
  nnn=min(nnn,num_1)
print(nnn)