T = int(input())
for _ in range(T):
    N = int(input())
    A = list(map(int, input().split()))
    if sum(A) % 2 == 1:
        print("Yes")
    else:
        if 0 in A and 1 in A and N % 2 == 0:
            print("Yes")
        else:
            print("No")