Can anyone find which testcases i dont consider in my testcases #PROSPROD

#include <bits/stdc++.h>
using namespace std;

int main() {
int t;
cin>>t;
while(t–){
int n;
cin>>n;
int a[n];
for(int i=0;i<n;i++){
cin>>a[i];
}
sort(a,a+n);
int neg=0;
int pos=0;
int zero=0;
for(int i=0;i<n;i++){
if(a[i]<0){
neg++;
}
}
for(int i=0;i<n;i++){
if(a[i]==0){
zero++;
}
}
for(int i=0;i<n;i++){
if(a[i]>0){
pos++;
}
}
int sumN=0;
for(int i=1;i<=neg;i++){

     sumN=sumN+i-1;
        
    }
    int sumP=0;
    for(int i=1;i<=pos;i++){
        
    
     sumP=sumP+i-1;
        
    }
    
    cout<<sumN+sumP+zero*0<<endl;
    
    
    
    
  
}
// your code goes here
return 0;

}

Check the following simpler solution.

Accepted