Shared code

/* 777 */
#include "bits/stdc++.h"
using namespace std;

#define ll long long 

const int MOD=1e9+7;

ll bin_exp_iter(ll base,ll exp){
	ll res=1;
	while(exp>0){
		if(exp&1)res=(res*base)%MOD;
		base=(base*base)%MOD;
		exp>>=1;
	}
	return res;
}

void solve(){
	ll n;cin>>n;
	cout<<bin_exp_iter(2,n);
}

int main(){
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	solve();
}