def main():
    N = int(input())
    MOD = 1000000007
    ans = (4 * pow(10, N, MOD) - 1) % MOD

    if ans % 3 == 0:
        print(ans // 3)
    elif ans % 3 == 1:
        print((ans + MOD) // 3)
    else:
        print((ans + 2 * MOD) // 3)


if __name__ == "__main__":
    main()