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  1. // print()    -> p();
  2. // println()  -> pn();
  3. // next()     -> ns();
  4. // nextInt()  -> ni();
  5. // nextLong() -> nl();
  6. import java.io.*;
  7. import java.util.*;
  8.  
  9. public class Main {
  10.  
  11.     static void solve() {
  12.         int n = ni();
  13.  
  14.         // if(n <= 2) {
  15.         //     pn("NO");
  16.         //     return;
  17.         // }
  18.  
  19.         int[] f = new int[100001];
  20.  
  21.         int max1 = -1, max2 = -1;
  22.         for(int i = 0; i < n; i++) {
  23.             int val = ni();
  24.             f[val]++;
  25.  
  26.             if(max1 < val) {
  27.                 max2 = max1;
  28.                 max1 = val;
  29.             }
  30.  
  31.             else if(max2 < val) {
  32.                 max2 = val;
  33.             }
  34.         }
  35.  
  36.         if(max1 != max2){
  37.             if(f[max1] + f[max2] < n) pn("YES");
  38.             else pn("NO");
  39.         }
  40.  
  41.         else{
  42.             if(2 * f[max1] <= n + 1) pn("YES");
  43.             else pn("NO");
  44.         }
  45.     }
  46.  
  47.     public static void main(String[] args) throws Exception {
  48.         int T = ni();
  49.  
  50.         while (T-- > 0) {
  51.             solve();
  52.         }
  53.  
  54.         out.flush();
  55.         out.close();
  56.     }
  57.  
  58.     // gcd
  59.     static long gcd(long a, long b) {
  60.         return (b == 0) ? a : gcd(b, a % b);
  61.     }
  62.  
  63.     // modular a^b
  64.     static long modPow(long a, long b, long mod) {
  65.         long res = 1;
  66.         while (b > 0) {
  67.             if ((b & 1) == 1) res = (res * a) % mod;
  68.             a = (a * a) % mod;
  69.             b >>= 1;
  70.         }
  71.         return res;
  72.     }
  73.  
  74.     // global io
  75.     static FastReader in = new FastReader();
  76.     static PrintWriter out = new PrintWriter(System.out);
  77.  
  78.     // mod = (int)1e9+ 7
  79.     static final int MOD = 1_000_000_007;
  80.  
  81.     // short input methods
  82.     static String ns() {
  83.         return in.next();
  84.     }
  85.     static int ni()  {
  86.         return in.nextInt();
  87.     }
  88.     static long nl() {
  89.         return in.nextLong();
  90.     }
  91.  
  92.     // short output methods
  93.     static void p(Object o)  {
  94.         out.print(o);
  95.     }
  96.     static void pn(Object o) {
  97.         out.println(o);
  98.     }
  99.  
  100.     // fast reader
  101.     static class FastReader {
  102.         BufferedReader br;
  103.         StringTokenizer st;
  104.  
  105.         FastReader() {
  106.             br = new BufferedReader(new InputStreamReader(System.in));
  107.         }
  108.  
  109.         String next() {
  110.             while (st == null || !st.hasMoreTokens()) {
  111.                 try {
  112.                     st = new StringTokenizer(br.readLine());
  113.                 } catch (IOException e) {
  114.                     e.printStackTrace();
  115.                 }
  116.             }
  117.             return st.nextToken();
  118.         }
  119.  
  120.         int nextInt()   {
  121.             return Integer.parseInt(next());
  122.         }
  123.         long nextLong() {
  124.             return Long.parseLong(next());
  125.         }
  126.     }
  127. }
Runtime error #stdin #stdout #stderr 0.09s 52768KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
stderr 
Exception in thread "main" java.lang.NullPointerException
	at java.base/java.util.StringTokenizer.<init>(StringTokenizer.java:199)
	at java.base/java.util.StringTokenizer.<init>(StringTokenizer.java:236)
	at Main$FastReader.next(Main.java:112)
	at Main$FastReader.nextInt(Main.java:121)
	at Main.ni(Main.java:86)
	at Main.main(Main.java:48)
https://ideone.com/tFfN2B
language:
Java (HotSpot 12)
created:
38 days ago
visibility:
public

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