#include<bits/stdc++.h>//1267650600228229401496703205376
using namespace std;//   1267650600228229401496703205376
int a[100],n,s=1;
int main(){
	cin>>n;
	a[0]=1;
	for(int i=0;i<n;i++){
		for(int j=s-1;j>=0;j--){
			a[j]*=2;
			a[j+1]+=a[j]/10;
			a[j]=a[j]%10;
		}
		if(a[s]!=0){
			s++;
		}
	}
	for(int i=s-1;i>=0;i--){
		cout<<a[i];
	}
	return 0;
}

/**************************************************************
	Problem: 1280
	User: zzz
	Language: C++
	Result: Accepted
	Time:16 ms
	Memory:2072 kb
****************************************************************/