OddEvenSum

import java.util.Scanner;

public class OddEvenSum {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int n = Integer.parseInt(scanner.nextLine());

        int even = 0;
        int odd = 0;

        for (int i = 1; i <= n ; i++) {
            int num = Integer.parseInt(scanner.nextLine());

            if (i % 2 == 0){
                even += num;
            }else {
                odd += num;
            }
        }
        int diff = Math.abs(even - odd);
        if (diff == 0){
            System.out.printf("Yes Sum = %d", even);
        }else {
            System.out.printf("No Diff = %d", diff);
        }
    }
}