using System; using System.Collections.Generic; using System.Linq; using System.IO; using System.Globalization; using System.Diagnostics; using static System.Console; using Pair = System.Collections.Generic.KeyValuePair; //using System.Numerics; class Program { static void Main() { //SetOut(new StreamWriter(OpenStandardOutput()) { AutoFlush = false }); new Program().solve(); Out.Flush(); } Scanner cin = new Scanner(); Random rnd = new Random(); Stopwatch sw = new Stopwatch(); readonly int[] dd = { 0, 1, 0, -1, 0 }; readonly int mod = 1000000007; readonly string alfa = "abcdefghijklmnopqrstuvwxyz"; readonly string ALFA = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; long N; void solve() { N = cin.nextlong; if(N == 1) { WriteLine(2); return; } long ans = 1; if (N % 2 == 1) ans *= 3; ans *= 4; ans *= Powmod(5, N / 2 - 1, mod); ans += mod; ans %= mod; WriteLine(ans); } //a^b(mod p) solution works in O(logb). long Powmod(long a, long b, long p) { if (b == 0) return 1; if (b % 2 == 0) { long d = Powmod(a, b / 2, p); return d * d % p; } else { return a * Powmod(a, b - 1, p) % p; } } } class Scanner { string[] s; int i; char[] cs = new char[] { ' ' }; public Scanner() { s = new string[0]; i = 0; } public string[] scan { get { return ReadLine().Split(); } } public int[] scanint { get { return Array.ConvertAll(scan, int.Parse); } } public long[] scanlong { get { return Array.ConvertAll(scan, long.Parse); } } public double[] scandouble { get { return Array.ConvertAll(scan, double.Parse); } } public string next { get { if (i < s.Length) return s[i++]; string st = ReadLine(); while (st == "") st = ReadLine(); s = st.Split(cs, StringSplitOptions.RemoveEmptyEntries); i = 0; return next; } } public int nextint { get { return int.Parse(next); } } public long nextlong { get { return long.Parse(next); } } public double nextdouble { get { return double.Parse(next); } } }