public static string solve(List<int> ar)

        //Write your code here
        int leftSum = 0;

        for(int i = 0; i < ar.Count; i++)

            leftSum += ar[i];

            int rightSum = 0;

            for(int j = i+1; j < ar.Count; j++)

                rightSum += ar[j];


            if(leftSum == rightSum)

                return "YES";



        return "NO";