description: You are given a sequence of n integers a_1,   a_2,   ...,   a_n.
  
  Does there exist a sequence of n integers b_1,   b_2,   ...,   b_n such that the following property holds?
  
    * For each 1 ≤ i ≤ n, there exist two (not necessarily distinct) indices j and k (1 ≤ j,   k ≤ n) such that a_i = b_j - b_k. 
  
  Input
  
  The first line contains a single integer t (1 ≤ t ≤ 20) — the number of test cases. Then t test cases follow.
  
  The first line of each test case contains one integer n (1 ≤ n ≤ 10).
  
  The second line of each test case contains the n integers a_1,   ...,   a_n (-10^5 ≤ a_i ≤ 10^5).
  
  Output
  
  For each test case, output a line containing YES if a sequence b_1,   ...,   b_n satisfying the required property exists, and NO otherwise.
  
  Example
  
  Input
  
  
  5
  5
  4 -7 -1 5 10
  1
  0
  3
  1 10 100
  4
  -3 2 10 2
  9
  25 -171 250 174 152 242 100 -205 -258
  
  
  Output
  
  
  YES
  YES
  NO
  YES
  YES
  
  Note
  
  In the first test case, the sequence b = [-9,   2,   1,   3,   -2] satisfies the property. Indeed, the following holds: 
  
    * a_1 = 4 = 2 - (-2) = b_2 - b_5; 
    * a_2 = -7 = -9 - (-2) = b_1 - b_5; 
    * a_3 = -1 = 1 - 2 = b_3 - b_2; 
    * a_4 = 5 = 3 - (-2) = b_4 - b_5; 
    * a_5 = 10 = 1 - (-9) = b_3 - b_1. 
  
  
  
  In the second test case, it is sufficient to choose b = [0], since a_1 = 0 = 0 - 0 = b_1 - b_1.
  
  In the third test case, it is possible to show that no sequence b of length 3 satisfies the property.
solution: import java.io.*;
  import java.util.*;
  
  public class D {
      public static void main(String[] args) throws IOException {
          in.init();
          int n = in.readInt();
          for (int i = 0; i < n; i++) {
              sol();
          }
          in.dinit();
      }
  
      private static void sol() throws IOException {
          // ArrayList<Integer> arr = new ArrayList<>();
          int n = in.readInt();
  
          int arr[] = in.arr(n);
          int three2n = 1;
          for (int i = 0; i < arr.length; i++) {
              three2n *= 3;
          }
          for (int i = 1; i < three2n; i++) {
              int sum = i;
              int actualsum = 0;
              for (int j = 0; j < arr.length; j++) {
                  int change = sum % 3;
                  change = (change == 2) ? -1 : change;
                  actualsum += change * arr[j];
                  sum = sum / 3;
              }
              if (actualsum == 0) {
                  System.out.println("YES");
                  return;
              }
  
          }
          System.out.println("NO");
  
      }
  
  }
  
  
  class in {
  
      static BufferedReader br;
      static PrintWriter out;
      static StringTokenizer st;
  
      public static void init() throws IOException {
           br = new BufferedReader(new InputStreamReader(System.in));
           out = new PrintWriter(new OutputStreamWriter(System.out));
         // br = new BufferedReader(new FileReader("in.txt"));
          //out = new PrintWriter(new FileWriter("out.txt"));
  
          // out.close();
      }
  
      static int[] arr(int n) throws IOException {
          int arr[] = new int[n];
          for (int i = 0; i < n; i++) {
              arr[i] = in.readInt();
  
          }
          return arr;
  
      }
  
      public static void dinit() throws IOException {
          br.close();
  
          out.close();
      }
  
      static String next() throws IOException {
          while (st == null || !st.hasMoreTokens())
              st = new StringTokenizer(br.readLine().trim());
          return st.nextToken();
      }
  
      static long readLong() throws IOException {
          return Long.parseLong(next());
      }
  
      static int readInt() throws IOException {
          return Integer.parseInt(next());
      }
  
      static double readDouble() throws IOException {
          return Double.parseDouble(next());
      }
  
      static char readCharacter() throws IOException {
          return next().charAt(0);
      }
  
      static String readLine() throws IOException {
          return br.readLine().trim();
      }
  }
  