#include<cstdio>
#include<cmath>
#include<iostream>
#include<string>
#include<cstring>
#include<algorithm>
#include<cstdlib>
#include<ctime>
#include<ctype.h>
#include<queue>
#include<stack>
#include<map>
#include<set>
#include<vector>
#include<list>
#define pi 4*atan(1)
#define eps 1e-10
#define INF 0x3f3f3f3f
#define lson l,m,rt<<1
#define rson m+1,r,rt<<1|1
#define FF(i,n) for(int i = 0 ; i < n ; i++)
#define F(i,n) for(int i = 1 ; i <= n ; i++)
#define maxn 1000000+10
#define mod 200907
#define met(a) memset(a,0,sizeof(a))
typedef long long LL;
//typedef __int64 LL;
using namespace std;
int a[maxn];
int main()
{
    int t;
    cin>>t;
    while(t--)
    {
        int n;
        cin>>n;
        int cnt=0;
        F(i,n)
        {
            scanf("%d",&a[i]);
            if(a[i]==0)cnt++;
        }
        if(cnt&1)cout<<"NO"<<endl;
        else cout<<"YES"<<endl;
    }
    return 0;
}