#include<bits/stdc++.h>
using namespace std;
int main(){
    int n,b=1,a=1,d=1,e=0;
    cin>>n;
    for(b;b<=n,b++){
    	d=1;
    	a=1;
    	for(int i=1;i<=n;i++){
            d=d*a;
        }
    e=e+d;
    }
    cout<<e;
}
/**************************************************************
	Problem: 1019
	User: wangyiyang
	Language: C++
	Result: Compile Error
****************************************************************/