def Main():
  	A = int(input())
    B = int(input())
    C = int(input())
    D = int(input())
    E = int(input())
    
    Last = A
    
    if Last%10 > B%10:
      Last = B
    
    if Last%10 > C%10:
      Last = C
      
    if Last%10 > D%10:
      Last = D
      
    if Last%10 > E%10:
      Last = E
    
    BeforeTotal = (A/10+1)*10+(B/10+1)*10+(C/10+1)*10+(D/10+1)*10+(E/10+1)*10
    AfterTotal = BeforeTotal - (Last10+1)*10 +Last
    
    print(AfterTotal)
    
Main()
    