import math

A = int(input())
B = int(input())
C = int(input())
D = int(input())
E = int(input())
# = map(int, input().split())
# = list(map(int, input().split()))
# = [list(map(int, input().split())) for i in range(N)]
List = [A, B, C, D, E]
Time = []
Cost = []
answer = 0

for i in range(5):
    Time.append(List[i]%10)
    Cost.append(math.ceil(List[i]/10)*10)

for i in range(5):
    answer += Cost[i]

Time = list(set(Time))
if Time[0] == 0:
    Time.remove(0)

answer = answer - (10-min(Time))

print(answer)
