func_code_string: #include <bits/stdc++.h>   using namespace std;   long long N = 1e9 + 7;   void solve() {     long long n;     cin >> n;     vector<long long> v(n);     for (int i = 0; i < n; i++) cin >> v[i];     long long b[n];     long long sum = 0;     for (int i = 0; i < n; i++) sum += v[i];     long long x = (n * (n + 1)) / 2;     long long tot = sum / x;     if (sum % x != 0) {       cout <<  NO ;       return;     }     b[0] = v[n - 1] - v[0];     for (int i = 1; i < n; i++) {       b[i] = v[i - 1] - v[i];     }     long long ans = 0;     vector<long long> an;     for (int i = 0; i < n; i++) {       ans = (b[i] + tot) / (n);       an.push_back(ans);     }     if ((b[0] + tot) % n != 0) an[0] = -1;     int f = 1;     for (int i = 0; i < n; i++) {       if (an[i] <= 0) f = 0;     }     if (f) {       cout <<  YES n ;       for (auto y : an) cout << y <<    ;     } else {       cout <<  NO ;     }   }   int main() {     int t;     cin >> t;     while (t--) {       solve();       cout <<   n ;     }     return 0;   }   