Code chef problem 10:

https://www.codechef.com/COOK125B/problems/ATTENDU

for _ in range(int(input())):

    n=int(input())

    b=input()

    

    count=0

    for i in b:

        if i=='0':

            count+=1

        

    if count<=30:

        print("YES")

    else:

        print("NO")