m=[]
cnt=0
for i in range(5):
    x=int(input())
    m.append(x)
m10=[i % 10 for i in m if i %10 >=1]
if n10:
    t=min(m10)
    for i in m:
        if i %10==0:
            cnt += i
        else:
            cnt += ((i//10)+1)*10
    print(cnt-10+t)
else:
    print(sum(m))