Language: C++

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

int main() {
    long int n;
    cin>>n;
    std::vector<pair<long int,long int>> v;
    set<pair<long int,long int>> s;
    for(long int i=0;i<n;i++)
    {
        long int x,y;
        cin>>x>>y;
        v.push_back({x,y});
    }
    if(n==1)
    {
        cout<<"1"<<endl;
        exit(0);
    }
    sort(v.begin(),v.end());
    for(long int i=0;i<n-1;i++)
    {
        auto tmp=v[i+1];
        long int x,y;
        x=abs(tmp.first-v[i].first);
        y=abs(tmp.second-v[i].second);
        s.insert({x,y});
    }
    //cout<<s.size()<<endl;
	s.clear();
	long int ans=s.size()<<endl;
	for(long int i=n-1;i>=1;i--)
    {
        auto tmp=v[i-1];
        long int x,y;
        x=abs(tmp.first-v[i].first);
        y=abs(tmp.second-v[i].second);
        s.insert({x,y});
    }
    cout<<min(ans,s.size())<<endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:32:30: error: invalid operands of types 'std::set<std::pair<long int, long int> >::size_type' {aka 'long unsigned int'} and '<unresolved overloaded function type>' to binary 'operator<<'
   32 |         long int ans=s.size()<<endl;
      |                      ~~~~~~~~^~~~~~
a.cc:41:14: error: no matching function for call to 'min(long int&, std::set<std::pair<long int, long int> >::size_type)'
   41 |     cout<<min(ans,s.size())<<endl;
      |           ~~~^~~~~~~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:41:14: note:   deduced conflicting types for parameter 'const _Tp' ('long int' and 'std::set<std::pair<long int, long int> >::size_type' {aka 'long unsigned int'})
   41 |     cout<<min(ans,s.size())<<endl;
      |           ~~~^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_algo.h:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:41:14: note:   mismatched types 'std::initializer_list<_Tp>' and 'long int'
   41 |     cout<<min(ans,s.size())<<endl;
      |           ~~~^~~~~~~~~~~~~~