#include <bits/stdc++.h>
using namespace std;

#define ll long long

void solve() {
	int n; cin >> n;
	ll s = 0;
	for (int i = 0; i <n;++i) {
		ll x; cin >> x;
		s += x;
	}
	ll k = s / n;
	if (n * k == s) {
		cout << "Yes\n";
	} else {
		cout << "No\n";
	}
	return;
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);

	ll t = 1;
	//cin >> t;
	while (t--) {
		solve();
	}

	return 0;
}