import java.util.Scanner;
class tasi{
  public static void main(String args[]){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    
    long b[] = new long[a];
    long sum = 0;
    
    for(int i = 0; i < a; i++){
      b[i] = sc.nextLong();
      sum += b[i]; 
    }
  	System.out.println(sum);
  }
}