string balancedSums(vector<int> arr) {
    int ls = 0, rs = accumulate(arr.begin(), arr.end(), 0);
    for(int i = 0; i < arr.size(); i++){
        rs -= arr[i];
        if(i != 0) ls += arr[i-1];
        if(ls == rs) return "YES";
    }
    return "NO";
}

sub balancedSums {
    my $arr = shift;
    
    my $total_sum = sum(@$arr);
    my $left_sum = 0;
    foreach my $num (@$arr) {
        my $right_sum = $total_sum - $left_sum - $num;
        return "YES" if $left_sum == $right_sum;
        $left_sum += $num;
    }
    return "NO";  
}

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";
}

#!/bin/python3

import math
import os
import random
import re
import sys

# 
#Complete the 'balancedSums' function below.
#
# The function is expected to return a STRING.
# The function accepts INTEGER_ARRAY arr as parameter.
#
for t in range(int(input())):
    n = int(input())
    a = [int(b) for b in input().split()]
    s = sum(a)
    count = 0
    for i in range(n):
        if 2*count == s-a[i]:
            print("YES")
            break
        count += a[i]
    else:
        print("NO")

public static string balancedSums(List<int> arr)
{
    var len = arr.Count;
    var total = arr.Sum(x => (long)x);
    long leftSum = 0;
    long rightSum = total;

    for (int i = 0; i < len; ++i)
    {
        rightSum = rightSum - arr[i];
        var leftIndex = (i == 0) ? 0 : i - 1;

        if (i > 0)
        {
            leftSum = leftSum + arr[leftIndex];
        }

        if (leftSum == rightSum)
        {
            return "YES";
        }
    }

    return "NO";
}