#define _CRT_SECURE_NO_WARNINGS
#include<iostream>
#include<sstream>
#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<climits>
#include<cmath>
#include<string>
#include<vector>
#include<set>
#include<map>
#include<queue>
#include<numeric>
#include<functional>
#include<algorithm>
#include<bitset>
#include<tuple>
#include<unordered_set>
#include<random>
#include<array>
#include<cassert>
using namespace std;
#define INF (1<<29)
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define all(v) v.begin(),v.end()
#define uniq(v) v.erase(unique(all(v)),v.end())


#define MOD 1000000007


long long pow_mod(long long x, long long y){
	int res = 1;
	while (y){
		if (y & 1)res = (res*x) % MOD;
		y >>= 1;
		x = (x*x) % MOD;
	}
	return res;
}



int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);

	long long n;
	cin>>n;

	if (n==1){
		cout<<2<<endl;
		return 0;
	}
	if (n==2){
		cout<<4<<endl;
		return 0;
	}

	long long ans=1;

	if (n & 1){
		ans=3;
		n--;
	}
	ans *= 4;
	n -= 2;

	ans *= pow_mod(5, n/2);
	ans %= MOD;

	cout<<ans<<endl;


	
	return 0;
}