#include <iostream>
using namespace std;
int A[20];
bool dfs(int i,int n,int a,int b,int c){
  if(i==n){
    return a==b && b==c;
  }
  bool ret = false;
  ret |= dfs(i+1,n,a+A[i],b,c);
  ret |= dfs(i+1,n,a,b+A[i],c);
  ret |= dfs(i+1,n,a,b,c+A[i]);
  return ret;
}
int main(){
  int n;cin>>n;
  for(int i = 0; n > i; i++){
    cin>>A[i];
  }
  if(dfs(0,n,0,0,0)){
    cout << "Yes" << endl; 
  }else{
    cout << "No" << endl;
  }
}