#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int INF = 1e+9;
const ll LINF = (ll)pow(10,18);

int main(){
    int n;
    cin >> n;

    int a;

    ll sum = 0;

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

    if((double)sum/n == sum/n) cout << "Yes" << endl;
    else cout << "No" << endl;
}