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#include <bits/stdc++.h>
using namespace std;
 
//#define int long long
#define ii pair<int, int>
#define fi first
#define se second
#define pb push_back
#define mp make_pair
#define vi vector<int>
#define vii vector<ii>
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define rep(i, a, b) for (int i = a; i < b; i++)
#define per(i, a, b) for (int i = a; i >= b; i--)
#define endl '\n'
#define sz(x) (int)x.size()
 
int n;
int skor_rekursi[10], skor_input[10];
bool ada = false;
 
void rec(int a, int b, int now) {
   if (n*(n-1)/2 < now) {
      //check apakah SKOR sama dengan inputnya
 
      //for (int i = 1; i <= n ; i++) cout << skor_rekursi[i] << " ";
      //cout << endl;
 
      bool sama = true;
      for (int i = 1; i <= n; i++) {
        if (skor_rekursi[i] != skor_input[i]) {
          sama = false;
          break;
        }
      }
 
      if (sama) ada = true;
   }
   else {
      int nexta = a, nextb = b;
      nextb++;
 
      if (nextb > n) {
        nexta = a+1;
        nextb = a+2;
      }
 
      //rekursi lagi
      //a menang
      skor_rekursi[a] += 3;
      skor_rekursi[b] += 0;
 
      //rekrusi ke pertandingan selanjutnya
      rec(nexta, nextb, now+1);
 
      skor_rekursi[a] -= 3;
      skor_rekursi[b] -= 0;
 
      //b menang 
      skor_rekursi[a] += 0;
      skor_rekursi[b] += 3;
 
      //rekursi ke pertandingan selanjutnya
      rec(nexta, nextb, now+1);
 
      skor_rekursi[a] -= 0;
      skor_rekursi[b] -= 3;
 
      //seri
      skor_rekursi[a] += 1;
      skor_rekursi[b] += 1;
 
      //rekursi ke pertandingan selanjutnya
      rec(nexta, nextb, now+1);
 
      skor_rekursi[a] -= 1;
      skor_rekursi[b] -= 1;
   }
}
 
signed main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  cout.tie(nullptr);
 
  int tc;
  cin >> tc;
 
  while (tc--) {
    cin >> n;
 
    for (int i = 1; i <= n; i++) cin >> skor_input[i];
 
    ada = false;
    rec(1, 2, 1);
 
    if (!ada) cout << "NO" << endl;
    else cout << "YES" << endl;
  }
}

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Success #stdin #stdout 0s 5284KB

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