what is the problem with my code and how do I format my code in the discussion forum
MY answer link: CodeChef: Practical coding for everyone
import math
for _ in range(int(input())):
n=int(input())
l1=input()
(a,b,c,i)=(0,0,2*n,0)
while abs(a-b)<=math.ceil(c/2) and i<len(l1):
if i%2==0 and l1[i]=='1':
a+=1
elif i%2!=0 and l1[i]=='1':
b+=1
i+=1
c-=1
print(i)