Wrong answer in CHCBOX ---> https://www.codechef.com/problems/CHCBOX

help
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1

can anybody plz tell why i am getting wrong answer in this question

#include <iostream>
#include <cmath>
using namespace std;

int main() {int t;
cin>>t;
while(t--){
    long int i,n,x=0,y=0,max=0;
    cin>>n;
    long int no[n]={0};
    long int a[n];
    for(i=0;i<n;i++)
    {
        cin>>a[i];
        if (a[i]>max)
        {
            max=a[i];
        }
    }
    for (i=0;i<n;i++)
    {
        if(max==a[i])
        {
            no[x]=i;
            x++;
        }
    }
    if(x==1)
    {
        cout<<n/2<<endl;
    }
    else
    {
        long int diff[x-1];
        for(i=0;i<x-1;i++)
        {
            diff[i]=no[i+1]-no[i];
        }
     max=0;
    for(i=0;i<x-1;i++)
    {
        if (diff[i]>max)
        {
            max=diff[i];
        }
    }max=max-1;
    long int top=n/2-1;

    if (max>top){
        cout<<"0"<<endl;
    }
    else
    {
        cout<<top-max<<endl;

    }
}}
	return 0;
}