#include<iostream>
#include<cstdio>
#include<cmath>
#include<algorithm>
#include<string>
#include<cstring>
const int INF=0x3f3f3f3f;
const int N=1e5+10;
using namespace std;
int a[N],n,len,x;
int main(){
	cin>>n;
	a[++len]=1;
	while(n--)
	{
		for(int i =1;i<=len;i++ )
		{
			a[i]=a[i]*2+x;
			x=a[i]/10;
			a[i]%=10;
		}
		if(x)
		a[++len]=x;
		x=0;
	}
	for(int i=len;i>=1;i--)
	{
		cout<<a[i];
	}
	return 0;
}