def f(x, n):
    if n == 0:
        return x
    if x == 0:
        return 6
    if x == 1:
        if n == 1:
            return 2
        else:
            return 5
    if x == 2:
        return 5
    if x == 3:
        return 5
    if x == 4:
        return 4
    if x == 5:
        return 5
    if x == 6:
        return 6
    if x == 7:
        return 4
    if x == 8:
        if n == 1:
            return 7
        else:
            return 4
    if x == 9:
        return 6
    if x >= 10:
        ans = f(x//10, n) + f(pow(x, 1, 10), n)
        n -= 1
        return f(ans, n)
    if x < 0:
        n -= 1
        ans = 1 + f(-x, n)
        return f(ans, n)

p, n = map(int, input().split())
print(f(p, n))