import java.io.*;
import java.util.Scanner;


public class Main_yukicoder793 {

	private static Scanner sc;
	private static Printer pr;

	private static void solve() {
		final int MOD = 1_000_000_007;

		long n = sc.nextLong();

		int[] a = {10, 1};
		int[][] x = {
				{10, 0},
				{1, 0},
		};
		
		long ans = f(x, a, n, MOD);

		int[] b = {3, 0, 1};
		int[][] xx = {
				{10, 0, 3},
				{0, 10, 3},
				{0, 0, 1},
		};
		ans += f(xx, b, n, MOD);
		ans %= MOD;
		
		pr.println(ans);
	}
	
	private static long f(int[][] x, int[] a, long n, int MOD) {
		long loop = n;
		while (loop > 0) {
			if (loop % 2 == 1) {
				a = Matrix.mul(x, a, MOD);
			}
			x = Matrix.mul(x, x, MOD);
			loop /= 2;
		}
		
		return a[1];
	}

	static class Matrix {
		static int[] mul(int[][] a, int[] x, int MOD) {
			int m = a.length;
			int n = a[0].length;
			if (n != x.length) {
				throw new IllegalArgumentException();
			}

			int[] y = new int[m];
			for (int i = 0; i < m; i++) {
				long tmp = 0;
				for (int j = 0; j < n; j++) {
					tmp += (long)a[i][j] * x[j];
					tmp %= MOD;
				}
				y[i] = (int)tmp;
			}

			return y;
		}

		static int[][] mul(int[][] a, int[][] a2, int MOD) {
			int m = a.length;
			int n = a2[0].length;
			int l = a[0].length;
			if (l != a2.length) {
				throw new IllegalArgumentException();
			}

			int[][] y = new int[m][n];
			for (int i = 0; i < m; i++) {
				for (int j = 0; j < n; j++) {
					long tmp = 0;
					for (int k = 0; k < l; k++) {
						tmp += (long)a[i][k] * a2[k][j];
						tmp %= MOD;
					}
					y[i][j] = (int)tmp;
				}
			}

			return y;
		}

		static int[][] getI(int n) {
			int[][] mat = new int[n][];
			for (int i = 0; i < n; i++) {
				mat[i] = new int[n];
				mat[i][i] = 1;
			}

			return mat;
		}
	}

	// ---------------------------------------------------
	public static void main(String[] args) {
		sc = new Scanner(System.in);
		pr = new Printer(System.out);
			
		solve();
			
		pr.close();
		sc.close();
	}

	static class Printer extends PrintWriter {
		Printer(OutputStream out) {
			super(out);
		}
	}
}