Help me in solving remove one element in codechef

help
,
1

My issue

hello

My code

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

int main() {
   	ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t;
    cin>>t;
    while(t--){
 long long int minimum1=LLONG_MAX,minimum=LLONG_MAX,minimum2=LLONG_MAX,same=0,not_same=0;
	unordered_set<long long int>u;
	long long int n;
	cin>>n;
	vector<long long int>v;
	 for(int i=0;i<n;i++){
	    long long int value;
	     cin>>value;
	     v.push_back(value);
	    minimum1=min(minimum1,value);
	 }
	 for(int i=0;i<n-1;i++){
	     long long int value;
	     cin>>value;
	     u.insert(value);
	     minimum2=min(minimum2,value);
	 }
	long long int check=minimum2-minimum1;
   for(int i=0;i<n;i++){
        if(u.find(v[i]+check)!=u.end())
          same++;
        else {
         not_same++;
        }
   }
   if(same>=2)
     cout<<check<<endl;
     else if(not_same>=2){
        for(int i=0;i<n;i++){
             if(minimum1!=v[i]){
                 minimum=min(minimum,v[i]);
             }
        }
         cout<<minimum2-minimum<<endl;
    }
    else
       {
          if((minimum2-max(v[0],v[1])>=0))
          cout<<minimum2-max(v[0],v[1]);
          else
          cout<<check;
          cout<<endl;
       }
    
}
}

Learning course: Jump from 2* to 3*
Problem Link: Practice Problem in - CodeChef