/*
 * 9008.cpp
 */

//include files
#include<bits/stdc++.h>

using namespace std;

//DEFINE CONSTANT

//DEFINE PROTOTYPE

int main(){
  int A[500000];
  int N;
  int sum=0;
  cin >> N;
  for(int i=0 ; i<N ; i++){
	cin >> A[i];
  }
  for(int i=0 ; i<N ; i++) sum += A[i];
  cout << sum << endl;
  
}