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#include <cstdio>
#include <iostream>
using namespace std;
int a[100],n,k;
int dfs(int i,int sum)
{
    if(i==n)
        return k==sum;
    if(dfs(i+1,sum))
        return 1;
    if(dfs(i+1,sum+a[i]))
        return 1;
    return 0;
}
int main()
{
    cin>>n;
    for(int i=0; i<n; i++)
        cin>>a[i];
    cin>>k;
    if(dfs(0,0))
        cout<<"YES"<<endl;
    else
        cout<<"NO";
    return 0;
}