#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: fzy001
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2072 kb
****************************************************************/