def main():
    n, k = map(int, input().split())
    ans = 0

    while True:
        if n // k == 0:
            ans += 1
            break
        n //= k
        ans += 1

    print(ans)


if __name__ == "__main__":
    main() def main():
    n, k = map(int, input().split())
    ans = 0

    while True:
        if n // k == 0:
            ans += 1
            break
        n //= k
        ans += 1

    print(ans) main n, k = map(int, input().split()) n map(int, input().split()) map int input().split() ().split () input split k ans = 0 ans 0 while True:
        if n // k == 0:
            ans += 1
            break
        n //= k
        ans += 1

     True if n // k == 0:
            ans += 1
            break
         n // k == 0 n // k n k 0 ans += 1 ans 1 break n //= k n k ans += 1 ans 1 print(ans) print ans if __name__ == "__main__":
    main() __name__ == "__main__" __name__ "__main__" main() main def main():
    n, k = map(int, input().split())
    ans = 0

    while True:
        if n // k == 0:
            ans += 1
            break
        n //= k
        ans += 1

    print(ans) def main():
    n, k = map(int, input().split())
    ans = 0

    while True:
        if n // k == 0:
            ans += 1
            break
        n //= k
        ans += 1

    print(ans) main
def main():
    n, k = map(int, input().split())
    ans = 0

    while True:
        if n // k == 0:
            ans += 1
            break
        n //= k
        ans += 1

    print(ans)


if __name__ == "__main__":
    main()
