include <bits/stdc++.h>

using namespace std;

int main(){
	int a = 1, n;
	cin >> n;
	for(int i = 0; i < n; i++){
		a *= 2;
	}	
	cout << a;
	return 0;
} 

#include<bits/stdc++.h>
using namespace std;
int n,x,y;
int main(){
	cin>>n>>x>>y;
	int s=n;
	s-=(y/x);
	if(y%x) s--;
	cout<<s<<endl;
	return 0;
}

#include<iostream>
#include<cmath>
using namespace std;
int main()
{
 int n,x,y;
 cin>>n>>x>>y;//输入
 int s=floor(y/x);//向下取整
 cout<<n-s-1;//输出
 return 0;//完结散花
}

#include <iostream>
using namespace std;
int n,x,y;
int main(){
	cin>>n>>x>>y;
	if(!y%x){
		cout<<n-y/x<<endl;
		return 0;
	}
	if(y%x){
		double ans=(double)y/x*1.00;
		ans=(int)ans;
		cout<<n-ans-1<<endl;
		return 0;
	}
}