#include <bits/stdc++.h> using namespace std; using ll = long long; #define rep(i, n) for (int i=0; i<(int)(n); ++(i)) #define rep3(i, m, n) for (int i=(m); (i)<(int)(n); ++(i)) #define repr(i, n) for (int i=(int)(n)-1; (i)>=0; --(i)) #define rep3r(i, m, n) for (int i=(int)(n)-1; (i)>=(int)(m); --(i)) #define all(x) (x).begin(), (x).end() int main() { int n; cin >> n; vector<int> a(n); rep(i, n) cin >> a[i]; ll sum = 0; rep(i, n) sum += a[i]; if (sum%n == 0) cout << "Yes" << endl; else cout << "No" << endl; return 0; }