#!/usr/bin/python2
# -*- coding: utf-8 -*-
# †
mod = 10**9 + 7

def mod_inv(a, m):
    b, s, t, old_a = m, 1, 0, a
    while b:
        q = a / b
        a %= b
        a, b = b, a
        s -= t * q
        s, t = t, s
    if a != 1:
        return None
    return s + m if s < 0 else s


# \frac{10^{n} - 1}{3} + 10^{n}
def f(n):
    inv = mod_inv(3, mod)
    p10 = pow(10, n, mod)
    res = (p10 - 1) * inv + p10
#    res = (p10 - 1) / 3 + p10 # わざと 3 で割ってみる
    res %= mod
    return res

##
N = int(raw_input())
res = f(N)
print res