def resolve():
    import math
    a = [int(input()) for _ in range(5)]
    b = []
    for i in range(5):
        if a[i]%10 != 0:
            b.append(a[i]%10)
    if b == []
        amin = 0
    else:
        amin = min(b)
    ans = 0
    for i in range(5):
        ans += math.ceil(a[i]/10)*10
    print(ans-10+amin)

resolve()