dishes = [int(input()) for i in range(5)]

ans = 0
min_digits = 10
digits_idx = 0
for idx, dish in enumerate(dishes):
  ans += dish + 10 - dish%10
  if dish%10 < min_digits:
    digits_idx = idx
  	min_digits = dish%10
ans -= (10 - dishes[digits_idx]%10)
print(ans)
