#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
ll mod=1000000007;
int main(){
    ll n;cin>>n;
    if(n==1){
        cout<<2<<endl;
        return 0;
    }
    ll ans=4;
    ll x=n/2-1;
    ll now=5;
    while(x>0){
        if(x%2==1){
            ans*=now;
            ans%=mod;
        }
        now*=now;
        now%=mod;
      x/=2;
    }
    if(n%2==1)ans*=3;
    ans%=mod;
    cout<<ans<<endl;
}