L=[]
L2=[]
for i in range(5):
    I=int(input())
    L.append(I)
    L2.append(I%10)

result=0
for i in L:
    result+=i
    if result%10==0:
        continue
    for j in range(10):
        result+=1
        if result%10==0:
            break

if max(L2)==0:
    print(0)
else:
    if min(L2)==0:
        for t in sorted(L2):
            if t==0:
                pass
            else:
                mn=t
                break
    else:
        mn=min(L2)

    print(result-(10-mn))
