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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5.     ios_base::sync_with_stdio(false);
  6.     cin.tie(0);
  7.  
  8.     int t;
  9.     cin >> t;
  10.     while (t--) {
  11.         int n;
  12.         cin >> n;
  13.         vector<int> a(n);
  14.         for (int i = 0; i < n; i++) {
  15.             cin >> a[i];
  16.         }
  17.         bool check = true;
  18.         for (int i = 0; i < n / 2; i++) {
  19.             if (a[i] != a[n - i - 1]) {
  20.                 check = false;
  21.                 break;
  22.             }
  23.         }
  24.         if(check)
  25.         	cout << "YES" << endl;
  26.         else
  27.         	cout << "NO" << endl;
  28.         a[n] = 0;
  29.     }
  30.     return 0;
  31. }
  32.  
Success #stdin #stdout 0s 5288KB
comments (?)
stdin
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2
1
1 4 4 1
5
1 5 5 5 3
stdout
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YES
NO
https://ideone.com/yOjBB9
language:
C++ (gcc 8.3)
created:
23 hours ago
visibility:
public

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