Help me in solving SPC2025Q5 problem

help
,
1

My issue

This is my code it’s showing runtime error on testcase7

My code


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

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int t;
    cin>>t;
    while(t--) {
        long long int n;
        cin>>n;
        double l,r;
        cin>>l>>r;
        double c=1;
        bool is_true=true;
        
        long long int a[n];
        for(int i=0; i<n; i++) {
            cin>>a[i];
        }
        for(int i=0; i<n-1; i++) {
            for(int j=i+1; j<n; j++) {
                c=c*(a[i]^a[j]);
                
            }
        }
        if(c>=l && c<=r) {
            cout<<"YES"<<"\n";
        } else {
            cout<<"NO"<<"\n";
        }
    }
}

Problem Link: Halloween Array Practice Coding Problem