#include<iostream>
#include<cstdio>
using namespace std;

int cmp(int a, int b) {
    return a > b;
}
int mins(int a, int b) {
    if (a < b)
        return a;
    return b;
}
int abss(int a) {
    if (a < 0)
        return -a;
    return a;
}

int main() {
    int n;
    scanf("%d", &n);
    while (scanf("%d", &n) != EOF) {
        int cntnum = 0;
        int t = 0;
        for (int i = 0; i < n; i++) {
            scanf("%d", &t);
            if (t == 0)
                cntnum++;
        }
        if (cntnum % 2 == 1) {
            printf("NO\n");
        } else {
            printf("YES\n");
        }
    }
    return 0;
}