A = int(input())
B = int(input())
C = int(input())
D = int(input())
E = int(input())

hasuu = [item % 10 if item % 10 != 0 
         for item in [A, B, C, D, E]]

for item in [A, B, C, D, E]:
  if item % 10 == 0:
    result += item 
  else:
    result += (item // 10 + 1) * 10
    
result = int(result - 10 + min(hasuu))
print(result)
    

    