blank space cf.cpp

#include<bits/stdc++.h> 
using namespace std;
int main(){
  int tuu;
  cin>>tuu;
  while(tuu--)
    {
    int n;
    cin >> n;
    int a[n];
    int cnt = 0, ans = 0;
    for(int i = 0; i < n; i++)
    {
        cin >> a[i];
        if(a[i] == 0)
        {
            cnt++;
        }
        else
        {
            ans = max(ans, cnt);
            cnt = 0;
        }
    }
    cout << max(ans, cnt) << endl;
    }
}