import java.util.Scanner;
import java.util.stream.IntStream;

public class Main{
	static IntStream REPS(int v){return IntStream.range(0,v);}
	static IntStream REPS(int l,int r){return IntStream.rangeClosed(l,r);}
	static IntStream INS(int n) {return REPS(n).map(i->getInt());}
	static Scanner s=new Scanner(System.in);
	static int getInt(){return Integer.parseInt(s.next());}

	public static void main(String[]$){
		long n=getInt(),r=4,mod=1000000007;
		if(n==1) {
			System.out.println(2);
			return;
		}
		r=r*modPow(5,n/2-1,mod)%mod;
		if(n%2==1)
			r=r*3%mod;
		System.out.println(r);
	}
	public static long modPow(long n,long p,long mod) {
		if(p==0) return 1;
		if(p==1) return n%mod;
		if(p%2==0) {
			long buf=modPow(n, p/2, mod);
			return buf*buf%mod;
		}
		return n*modPow(n, p-1, mod)%mod;
	}
}