#include <bits/stdc++.h>
using namespace std;
const int maxn = 5e5 + 10;
const int maxm = 5e5 + 10;
const long long mod = 1e9 + 7;
const double eps = 1e-10;
int a[maxn];
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int n;
  cin >> n;
  long long ans = 0;
  for (int i = 1; i <= n; ++i) {
    cin >> a[i];
    ans += a[i];
  }
  sort(a + 1, a + 1 + n);
  if (ans % 2 == 0 && ans / 2 >= a[n])
    cout << "YES";
  else
    cout << "NO";
  return 0;
}
