#include using namespace std; typedef long long int ll; typedef unsigned long long ull; typedef long double ld; int dx[8] = { 1, 0, -1, 0, 1, 1, -1, -1 }, dy[8] = { 0, 1, 0, -1, 1, -1, 1, -1 }; const long long mod = 998244353; const ll inf = 1LL << 60; const int INF = 5e8; int main() { int n; cin >> n; vector a(n); for (int i = 0; i < n; i++) cin >> a[i]; ll s = accumulate(a.begin(), a.end(), 0LL); if (s % n) { cout << "No" << endl; return 0; } sort(a.begin(), a.end()); vector b; for (int i = 0; i < n - 1; i++) { b.push_back(a[i + 1] - a[i]); } for (auto i : b) { if (i % n) { cout << "No" << endl; return 0; } } cout << "Yes" << endl; }