Arrays-Target Sum Pairs Error

Below is my code -
The code is running on my laptop but its not running or showing anything on CB and not getting submitted.

#include<bits/stdc++.h>
using namespace std;
int main()
{
int n;
cin>>n;
int arr[n];
for(int i=0;i<n;i++)
{
cin>>arr[i];
}
int target;
cin>>target;
sort(arr,arr+n);
int i=0;
for(int i=0;i<n;i++)
{
for(int j=n;j>=i;j–)
{
if(arr[i] + arr[j] == target){
cout<<arr[i]<<" and "<<arr[j]<<endl;
}
}
}
return 0;

}