#include<bits/stdc++.h>
using namespace std;
int main(){
	int n;
	cin>>n;
	for(int i=1;i<=6;i++){
		n=(n+2)*2;
	}
    cout<<n;
	return 0;
}

/**************************************************************
	Problem: 1688
	User: hongguangxi
	Language: C++
	Result: Accepted
	Time:3 ms
	Memory:2072 kb
****************************************************************/