#include<cstdio>
#include<algorithm>
#include<cstring>
using namespace std;
int a[20],n,tot;
bool dfs(int x,int ans)
{
    if(x==n+1)
    {
        if((!ans)&&tot)return 1;
        return 0;//！！！ 
    }
    else
    {
        tot++;
        bool ok=dfs(x+1,ans^a[x]);
        tot--;
        if(!ok)ok=dfs(x+1,ans);
        return ok;
    }
}
int main()
{
    int T=10;
    while(T--)
    {
        scanf("%d",&n);
        for(int i=1;i<=n;i++)scanf("%d",&a[i]);
        tot=0;
        if(dfs(1,0))printf("NO\n");else printf("YES\n");
    }
    return 0;
}