import java.util.Scanner;
class Main
{
  public static int reccursion(int arr[] , int len) {
    int sum = 0 ; 
    for(int i = 0 ; i < len ; i++){
    if(arr[i]>0 && arr[i] %2 ==1){
        	sum +=  arr[i];
        }
    }
    return sum;
  }
  
  
  public static void main(String args[])
  {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
     
    int arr[] = new int[n];
    for(int i = 0 ; i < n ; i++){
    	arr[i] = sc.nextInt();
    }
    int sum = reccursion( arr , arr.length) ;
    	
    System.out.println("Sum = "+sum);
  }
}