public static String balancedSums(List<Integer> arr) {
  int sum = 0;
  for (int i : arr) {
    sum += i;
  }
  int left = 0;
  for (int i = 0; i < arr.size(); i++) {
    int right = sum - left - arr.get(i);
    if (right == left) {
      return "YES";
    }
    left += arr.get(i);
  }
  return "NO";
}