#include<bits/stdc++.h>

using namespace std;

#pragma GCC optimize("Ofast,no-stack-protector")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC optimize("unroll-loops")

/// Typedef
typedef long long ll;

#define sc1(a) scanf("%lld",&a)
#define sc2(a,b) scanf("%lld %lld",&a,&b)

#define pf1(a) printf("%lld\n",a)
#define pf2(a,b) printf("%lld %lld\n",a,b)

#define mx 100007
#define mod 100000007
#define PI acos(-1.0)

#define size1 998244353
#define pb push_back

int main()
{

    ll m, tc, num, t = 1;

    sc1(num);
    ll arr[num];

    ll sum = 0, mxx = 0;
    for(ll i = 0; i < num; i++) {
        sc1(arr[i]);
        sum += arr[i];
        mxx = max(mxx, arr[i]);
    }

    if(sum & 1 || mxx * 2 > sum) cout << "NO" << endl;
    else cout << "YES" << endl;

}