Language: C++

#include <bits/stdc++.h>

using namespace std;

#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define all(v) v.begin(),v.end()
#define _GLIBCXX_DEBUG

using ll = long long;
using vi = vector<int>;
using vll = vector<ll>;
using vd = vector<double>;
using vvi = vector<vi>;
using vvll = vector<vll>;
using vvd = vector<vd>;
using vvvi = vector<vvi>;
using vvvll = vector<vvll>;
using vvvd = vector<vvd>;

const double pi=3.141592653589793;
int finder(vector<string> vec,string w){
    auto itr=find(all(vec),w);
    int index=distance(vec.begin(),itr);
    if (index!=vec.size()){
        return 1;
    }
    else{
        return 0;
    }
}

int main() {
    
    string s;
    cin>>s;
    vector<string> ss;
    for (int i=0;i<s.size();i++){
        string w="";
        for (int j=i;j<min(i+5,s.size());j++){
            w+=s.at(j);
            if (ss.size()<5){
                if (! finder(ss,w)){

                ss.push_back(w);
                sort(all(ss));
            }}
            else if (ss.at(4)>w){
                if (finder(ss,w)){
                ss.push_back(w);
                sort(all(ss));
                ss.pop_back();
            }}
        }
    }
    int k;
    cin>>k;
    cout<<ss[k-1]<<endl;


    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:39:27: error: no matching function for call to 'min(int, std::__cxx11::basic_string<char>::size_type)'
   39 |         for (int j=i;j<min(i+5,s.size());j++){
      |                        ~~~^~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 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:39:27: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'})
   39 |         for (int j=i;j<min(i+5,s.size());j++){
      |                        ~~~^~~~~~~~~~~~~~
/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:
/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:39:27: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   39 |         for (int j=i;j<min(i+5,s.size());j++){
      |                        ~~~^~~~~~~~~~~~~~