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

int n;
long long a, s = 0;

int main()
{
	cin >> n;

	for (int i = 0; i < n; i++) {
		cin >> a;
		s += a;
	}

	if(s % n == 0)
		cout << "Yes" << endl;
	else
		cout << "No" << endl;
}