from collections.abc import Iterable


def accum_dp(xs: Iterable, f, op, e, init: dict, *, is_reset=True):
    dp = init.copy()
    for x in xs:
        pp = {} if is_reset else dp.copy()
        dp, pp = pp, dp
        for fm_key, fm_val in pp.items():
            for to_key, to_val in f(fm_key, fm_val, x):
                dp[to_key] = op(dp.get(to_key, e), to_val)

    return dp


def f(k, v, x):
    lz, last, lt = k  # (leading zero, 末尾の数字, 未満か)

    if lz:
        for d in range(1, 10):
            yield (False, d, True), 1

        yield (True, 0, True), 1  # leading zero 維持
    else:
        for d in range(last, 10):
            if not lt and d > x: break
            nlt = lt | (d < x)
            yield (False, d, nlt), v


def op(a, b):
    return (a + b) % MOD


def digit_dp() -> int:
    digits = [9] * N
    init = {(True, 0, True): 1}
    for d in range(1, digits[0]+1):
        lz = False
        last = d
        lt = d < digits[0]
        init[lz, last, lt] = 1

    dp = accum_dp(digits[1:], f, op, 0, init)
    res = 0
    for (lz, _, _), v in dp.items():
        if lz: continue
        res += v
        res %= MOD

    return res + 1  # +1 はゼロの分


MOD = 10**9 + 7
N = int(input())
ans = digit_dp()
print(ans)