#include <iostream>

using namespace std;
int e[20];
bool dfs(int i,int n,int a,int b,int c){
    if(i==n){
        if(a==b && b==c) return true;
        return false;
    }else{
        bool f = false;
        f |= dfs(i + 1,n,a + e[i],b,c);
        f |= dfs(i + 1,n,a,b + e[i],c);
        f |= dfs(i + 1,n,a,b,c + e[i]);
        return f;
    }
}

int main(){
    int i,n; cin >> n;
    for(i=0;i<n;i++) cin >> e[i];
    if(dfs(0,n,0,0,0)) cout << "Yes" << endl;
    else cout << "No" << endl;
}