Language: C++

#include <cmath>
#include <cstdio>
#include <algorithm>

using namespace std;

int main()
{
    int n; double x[100000], y[100000];
    
    scanf("%d", &n);
    
    for(int i = 0; i < n; i++)
    {
        scanf("%lf", &x[i]);
        scanf("%lf", &y[i]);
    }
    
    pair<int, int> p1[100000], p2[100000];
    
    for(int i = 0; i < n; i++)
    {
        p1[i] = make_pair(x[i], y[i]);
    }
    
    for(int i = 0; i < n; i++)
    {
        p2[i] = make_pair(y[i], x[i]);
    }
    
    sort(p1, p1 + n);
    sort(p2, p2 + n);
    
    double sqr_ans = 100000000.0;
    
    for(int i = 0; i < n - 1; i++)
    {
        int distance_ = (p1[i + 1].first - p1[i].first) * (p1[i + 1].first - p1[i].first) + (p1[i + 1].second - p1[i].second) * (p1[i + 1].second - p1[i].second);
        
        sqr_ans = min(distance, sqr_ans);
    }
    
    for(int i = 0; i < n - 1; i++)
    {
        int distance_ = (p2[i + 1].first - p2[i].first) * (p2[i + 1].first - p2[i].first) + (p2[i + 1].second - p2[i].second) * (p2[i + 1].second - p2[i].second);
        
        sqr_ans = min(distance, sqr_ans);
    }
    
    printf("%.15f\n", sqrt(sqr_ans));
    
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:40:22: error: no matching function for call to 'min(<unresolved overloaded function type>, double&)'
   40 |         sqr_ans = min(distance, sqr_ans);
      |                   ~~~^~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/bits/specfun.h:43,
                 from /usr/include/c++/14/cmath:3906,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'constexpr const _Tp& std::min(const _Tp&, const _Tp&) [with _Tp = double]'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:20: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'const double&'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |         ~~~~~~~~~~~^~~
/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 a.cc:3:
/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:40:22: note:   couldn't deduce template parameter '_Tp'
   40 |         sqr_ans = min(distance, sqr_ans);
      |                   ~~~^~~~~~~~~~~~~~~~~~~
a.cc:47:22: error: no matching function for call to 'min(<unresolved overloaded function type>, double&)'
   47 |         sqr_ans = min(distance, sqr_ans);
      |                   ~~~^~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'constexpr const _Tp& std::min(const _Tp&, const _Tp&) [with _Tp = double]'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:20: note:   no known conversion for argument 1 from '<unresolved overloaded function type>' to 'const double&'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |         ~~~~~~~~~~~^~~
/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
/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:47:22: note:   couldn't deduce template parameter '_Tp'
   47 |         sqr_ans = min(distance, sqr_ans);
      |                   ~~~^~~~~~~~~~~~~~~~~~~