import math
a,b,c,d,e=[int(input()) for i in range(5)]
x=[]
y=[]
def ceil(src, range):
  return ((int)(src / range) + 1 ) * range
for s in [a,b,c,d,e]:
  if s%10 != 0:
    x.append(s%10)
  y.append(ceil(s,10))
t=min(x)
if a%10==0 and b%10==0 and c%10==0 and d%10==0 and e%10==0:
  print(a+b+c+d+e)
else:
  ans = sum(y)
  ans= ans-10+t
  print(ans)