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

time = 0
flag = 0
Loss = []

for i in range(5):
    if L[i]%10 == 0:
        time+=L[i]
        Loss.append(0)
    else:
        time+=(L[i]-L[i]%10+10)
        Loss.append(10-L[i]%10)

time -= 10-max(Loss)
print(time)