NEED HELP WITH CHCBOX from MARCHCOOKOFF2020

I am not able to figure out as to why i am getting a wrong answer in this question, or more precisely not able to figure out any corner cases that i have probably missed or if my logic as a whole is in correct. Any kind of help would be much appreciated.
My code:

for i in range(int(input())):
n=int(input())
l=list(map(int,input().split()))
s = ‘’.join(map(str, l))
l1=sorted(l)
maxx=l1[len(l1)-1]
s1=s.split(str(maxx))
if len(s1[0])+len(s1[len(s1)-1])>=n//2:
x=n-len(s1[0])-len(s1[len(s1)-1])
print(n//2-x+1)
else:
print(0)