func_code_string: #include <bits/stdc++.h>   using namespace std;   long long t;   long long a[200005];   int main() {     ios_base::sync_with_stdio(false);     cin >> t;     while (t--) {       long long n;       cin >> n;       for (int i = 1; i <= n; i++) {         cin >> a[i];         if (a[i] >= 0)           a[i] %= n;         else {           long long x = abs(a[i] / n);           a[i] = a[i] + n * (x + 5);           a[i] %= n;         }       }       vector<long long> v;       map<long long, long long> m;       for (int i = 1; i <= n; i++) {         v.push_back(((i - 1) + a[i]) % n);         m[((i - 1) + a[i]) % n]++;       }       bool flag = false;       for (auto x : v) {         if (m[x] > 1) {           flag = 1;         }       }       if (!flag)         cout <<  yes ;       else         cout <<  no ;       cout << endl;     }   }   