func_code_string: #include <bits/stdc++.h>   using namespace std;   const int N = 2e5 + 5;   const long long INF = 1e9;   long long b[N];   long long ans[N];   int main() {     ios::sync_with_stdio(false);     cin.tie(0);     cout.tie(0);     int t;     cin >> t;     while (t--) {       int n;       cin >> n;       for (int i = 1; i <= n; ++i) cin >> b[i];       long long sum = 0;       for (int i = 1; i <= n; ++i) sum += b[i];       long long x = (long long)n * (n + 1) / 2;       if (sum % x != 0) {         cout <<  NO  <<   n ;       } else {         sum /= x;         bool cek = true;         for (int i = 1; i <= n; ++i) {           int p = (i + n - 2) % n + 1;           if ((sum - b[i] + b[p]) % n != 0) cek = false;           ans[i] = (sum - b[i] + b[p]) / n;         }         for (int i = 1; i <= n; ++i) {           if (ans[i] <= 0 || ans[i] > INF) cek = false;         }         if (cek) {           cout <<  YES  <<   n ;           for (int i = 1; i <= n; ++i) {             cout << ans[i];             if (i < n) cout <<    ;           }           cout <<   n ;         } else {           cout <<  NO  <<   n ;         }       }     }     return 0;   }   