func_code_string: #include <bits/stdc++.h>   using namespace std;   long long gcd(long long a, long long b) {     if (b == 0) return a;     return gcd(b, a % b);   }   long long t, a[200010];   signed main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     cin >> t;     while (t--) {       long long n;       set<long long> s;       cin >> n;       for (long long i = 0; i < n; i++) cin >> a[i], a[i] = a[i] % n;       for (long long i = 0; i < n * 3; i++) s.insert(i + (a[i % n]));       if (s.size() != 3 * n)         cout <<  NO  <<   n ;       else         cout <<  YES  <<   n ;     }     return 0;   }   