#include <bits/stdc++.h>
template<class T> inline bool chmin(T&a, T b){if(a > b){a = b; return true;}else{return false;}}
template<class T> inline bool chmax(T&a, T b){if(a < b){a = b; return true;}else{return false;}}
#define ll long long
#define double long double
#define rep(i,n) for(int i=0;i<(n);i++)
#define REP(i,n) for(int i=1;i<=(n);i++)
#define mod (ll)(1e9+7)
#define inf (ll)(3e18+7)
#define eps (double)(1e-9)
#define pi (double) acos(-1)
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
using namespace std;

int n;
vector<int> e(12);

void solve(int a, int b, int c, int now){
    if(now == n){
        if(a == b && b == c){
            cout << "Yes" << endl;
            exit(0);
        } 
    }else{
        solve(a+e[now], b, c, now+1);
        solve(a, b+e[now], c, now+1);
        solve(a, b, c+e[now], now+1);
    }
    
}
int main(){
    cin >> n;
    rep(i, n)cin >> e[i];    
    solve(0, 0, 0, 0);
    cout << "No" << endl;
}