Sorting

input/code.cpp: In function 'void usaco(std::__cxx11::string)':
input/code.cpp:12:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen((s+".in").c_str(), "r", stdin);
   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
input/code.cpp:13:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen((s+".out").c_str(), "w", stdout);
   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

#include <bits/stdc++.h>
using namespace std;
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<ll, ll> pii;
typedef vector<ll> vi;
typedef vector<pii> vpi;

void usaco(string s){
  freopen((s+".in").c_str(), "r", stdin);
  freopen((s+".out").c_str(), "w", stdout);
}

int main() {
	cin.tie(0)->sync_with_stdio(0);
	cin.exceptions(cin.failbit);
#ifdef LOCAL_DEFINE
	freopen("input.txt", "r", stdin);
#endif
  int t; cin >> t;
  while(t--){
    int n;
    cin >> n;
    vector<int> v(n);
    for(int i = 0; i < n; i++) cin >> v[i];
    if(is_sorted(all(v))){
      cout << "YES\n";
      continue;
    }
    if(n < 3){
      cout << "NO\n";
      continue;
    }
    if(n==4){
      if(v[0]==3 and v[1]==4 and v[2]==1 and v[3]==2){
        cout << "YES\n";
      }
      else{
        cout << "NO\n";
      }
      continue;
    }
    cout << "YES\n";
  }

}

Test 1

Group: 1, 2

Verdict: WRONG ANSWER

Test 2

Group: 2

Verdict: WRONG ANSWER

Test 3

Group: 1, 2

Verdict: WRONG ANSWER

Test 4

Group: 1, 2

Verdict: WRONG ANSWER