arr = [0]*5
for i in range(5):
    arr[i] = int(input())
time = 0
for ar in arr:
    time += (-(-ar//10))*10
amari = []
for i in arr:
    amari.append(i%10)
amari.sort()
while 0 in amari:
    amari.remove(0)
print(time - (10-amari[0]))
