#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: wuzhijing
	Language: C++
	Result: Accepted
	Time:4 ms
	Memory:2072 kb
****************************************************************/