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

/**************************************************************
	Problem: 1688
	User: zhuanghaoxiang
	Language: C++
	Result: Accepted
	Time:5 ms
	Memory:2072 kb
****************************************************************/