func_code_string: #include <bits/stdc++.h>   #pragma GCC optimize( Ofast )   #pragma GCC optimize( unroll-loops )   #pragma GCC target( sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native )   using namespace std;   const int maxn = 4e2 + 5, maxk = 4e2 + 5, inf = 1e9 + 69, delta = 1e9 + 7,             max_sum = 10000 + 5;   inline void in_out_optimize() {     ios::sync_with_stdio(false);     cout.tie(0);     cin.tie(0);   }   int main() {     in_out_optimize();     int t;     cin >> t;     while (t--) {       int n;       cin >> n;       long long eq = inf - (inf % n);       set<int> dest;       for (int i = 0; i < n; i++) {         int a;         cin >> a;         if (a < 0) a += eq;         a %= n;         dest.insert((i + a) % n);       }       if (dest.size() == n)         cout <<  YES n ;       else         cout <<  NO n ;     }   }   