Help me in solving DSSA41 problem

help
,
1

My issue

i am getting wrong answer for this code
t = int(input())
for _ in range(t):
n=int(input())
a=list(map(int,input().split()))

a.sort()
if n%2 == 0:
    count = n//2
else:
    count = n//2 + 1 
i = n//2
while i >0:
    if a[i] == a[i-1]:
        count = count + i
        i = i - 1
    else:
        break
print(count) may i knoe the problem

My code

t = int(input())
for _ in range(t):
    n = int(input())
    a = list(map(int, input().split()))
    
    a.sort()
    if n % 2 == 0:
        count = n // 2
    else:
        count = n // 2 + 1 
    i = n // 2
    duplicates = 0
    while i > 0:
        if a[i] == a[i - 1]:
            count -= 1
            i -= 1
        else:
            break
    print(count)

Learning course: Kalasalingam Academy of Research and Education
Problem Link: CodeChef: Practical coding for everyone