随便乱搞？？？

#include <bits/stdc++.h>
#define maxn 1000005
using namespace std;
mt19937 rnd(std::chrono::system_clock::now().time_since_epoch().count());
int t, n, a[maxn];
signed main() {
	cin >> t;
	bool f = 0;
	while (t--) {
		f = 1;
		int cnt = 0;
		cin >> n; for (int i = 1; i <= n; i++)
		cin >> a[i], cnt += a[i]; if (cnt % n != 0) {if (f) cout << "No\n", f = 0; continue;}
		cnt /= n; for (int i = 1; i <= n; i++) {a[i] -= cnt; if (a[i] == 0) {if (f) cout << "Yes\n", f = 0; break;}}
		int ppp = 125; while (ppp--) {
			shuffle(a + 1, a + 1 + n, rnd); int zzl = 0;
			for (int i = 1; i <= n; i++) {
				zzl += a[i];
				if (zzl == 0 && i != n) {if (f) cout << "Yes\n", f = 0; break;}
			}
		} if (f) cout << "No\n";
	}
	return 0;
}