#include<iostream>
#include<cstdio>
using namespace std;
int gg[1000100];
int main()
{
    int T;
    scanf("%d",&T);
    while(T--)
    {
        int i,t,n;
        scanf("%d",&n);
        int sign=0;
        while(n--)
        {
            int x;
            scanf("%d",&x);
            if(x==0) sign++;
        }
        if(sign%2==0) cout<<"YES"<<endl;
        else cout<<"NO"<<endl;
    }
    return 0;
}