criyle/codenet-compile-errors huggingface dataset:
Language: C++

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

/*
#define rep(i,N) for(int i=0;i<int(N);++i)
#define rep1(i,N) for(int i=1;i<int(N);++i)
#define all(a) (a).begin(),(a).end()		//sort(all(vi S)) sort(all(string S))

typedef long long ll;
typedef vector<int> vi;
typedef set<int> seti;
typedef vector<string> vs;

const int MOD = 1e9+7;
const int INF = 1e9;*/

int main() {
	string S;
	int K;
	cin>>S>>K;
	int N = S.size();
	vector<string> vs;

    //n文字の中のk文字を探す
	for (int i = 0; i < N; ++i){
		for (int j = 0; i+j <= N&& j <=K; ++j){
			vs.push_back(S.substr(i,j));
		}
	}

	set<string> ss(all(vs));//全ての文字列のStringを構成
	vector<string> vs2(all(ss));//文字列をvector化する
	sort(all(vs2));//文字列を昇順にソート
	cout<<vs2[K]<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:31:24: error: 'all' was not declared in this scope; did you mean 'std::filesystem::perms::all'?
   31 |         set<string> ss(all(vs));//全ての文字列のStringを構成
      |                        ^~~
      |                        std::filesystem::perms::all
In file included from /usr/include/c++/14/filesystem:51,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:200,
                 from a.cc:1:
/usr/include/c++/14/bits/fs_fwd.h:158:7: note: 'std::filesystem::perms::all' declared here
  158 |       all               =  0777,
      |       ^~~
Language: C++

#include <bits/stdc++.h>
#define FOR(i, a, b) for(int i=(a); i<(b); i++)
#define REP(i, n) FOR(i, 0, n)
#define all(x) (x).begin(), (x).end()
#define bit(x) (1L << (x))
using ll = long long;
using namespace std;

int main() {
  string s; cin >> s;
  int k; cin >> k;

  set<string> st;
  size_t n = s.length();

  for(int i=0; i<n; i++){
    for(int j=1; j<=min(n-i, 5); j++){
      st.insert(s.substr(i, j));
    }
  }

  auto it = st.begin();
  for(int i=1; ; i++, it++){
    if(i == k){
      cout << *it << endl;
      return 0;
    }
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:24: error: no matching function for call to 'min(size_t, int)'
   17 |     for(int j=1; j<=min(n-i, 5); 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:17:24: note:   deduced conflicting types for parameter 'const _Tp' ('long unsigned int' and 'int')
   17 |     for(int j=1; j<=min(n-i, 5); 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:17:24: note:   mismatched types 'std::initializer_list<_Tp>' and 'long unsigned int'
   17 |     for(int j=1; j<=min(n-i, 5); j++){
      |                     ~~~^~~~~~~~
Language: C++

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

int main(void){
    string s; cin >> s;
    vector<string> A;
    int k; cin >> k;

    for(int i=1; i<=s.size(); i++){
        ˜
        for(int j=0; j<s.size()-i+1; j++){
            string a="";
            for(int l=0; l<i; l++){
                a+=s[j+l];
            }
            A.push_back(a);
        }
        
    }
    sort(A.begin(),A.end());

    int cnt=1;
    int id=1;
    while(true){
        if(A[id]!=A[id-1]){
            cnt++;
            if(cnt==k){
                cout << A[id] << endl; return 0;
            }
        }
        id++;
    }
}

Compiler output:
a.cc:11:10: error: stray '\16' in program
   11 |         <U+02DC><U+000E>
      |                 ^~~~~~~~
a.cc: In function 'int main()':
a.cc:11:9: error: '\U000002dc' was not declared in this scope
   11 |         ˜
      |         ^
a.cc:12:22: error: 'j' was not declared in this scope
   12 |         for(int j=0; j<s.size()-i+1; j++){
      |                      ^
Language: C++

#include <iostream>
#include <string>
#include <vector>

using namespace std;
int main(){
    string s;
    int K;
    cin >> s;
    cin >> K;
    int l = s.length();

    vector<string> substring;
    for(int i=1; i<=l; i++){
        for(int j=0; j<l-i+1; j++){
            substring.push_back(s.substr(j, i));
        }
   }
   sort(substring.begin(), substring.end());
   substring.erase(unique(substring.begin(), substring.end()), substring.end());
    cout << substring[K-1] << endl;

//    for(auto itr = substring.begin(); itr != substring.end(); ++itr){
//        cout << *itr << endl;
//    }
   return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:4: error: 'sort' was not declared in this scope; did you mean 'short'?
   19 |    sort(substring.begin(), substring.end());
      |    ^~~~
      |    short
a.cc:20:20: error: 'unique' was not declared in this scope
   20 |    substring.erase(unique(substring.begin(), substring.end()), substring.end());
      |                    ^~~~~~
Language: C++

//#include <stdio.h>
#include <string>
//#include <stdlib.h>
//#include <math.h>
#include <algorithm>
#include <vector>
#include <set>
#pragma warning(disable:4996)

typedef long long ll;
#define MIN(a, b) ((a)>(b)? (b): (a))
#define MAX(a, b) ((a)<(b)? (b): (a))
#define MOD 1000000007
using namespace std;

int main(int argc, char* argv[])
{
    char str[5001]={0};
    scanf("%s", str);
    long len=strlen(str);
    
    long k;
    scanf("%ld", &k);

    vector<string> vv;

    long i;
    for(i=0; i<len; i++) {
        char tmp[6]={0};
        long k;
        for(k=0; k<5; k++) {
            if(i+k<len) {
                tmp[k]=str[i+k];
                vv.push_back( string(tmp) );
            }
        }
    }
    sort(vv.begin(), vv.end());
    unique(vv.begin(), vv.end());

    printf("%s\n", vv[k-1].c_str());

    return 0;
}


Compiler output:
a.cc: In function 'int main(int, char**)':
a.cc:20:14: error: 'strlen' was not declared in this scope
   20 |     long len=strlen(str);
      |              ^~~~~~
a.cc:8:1: note: 'strlen' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    7 | #include <set>
  +++ |+#include <cstring>
    8 | #pragma warning(disable:4996)
a.cc:39:11: warning: ignoring return value of '_FIter std::unique(_FIter, _FIter) [with _FIter = __gnu_cxx::__normal_iterator<__cxx11::basic_string<char>*, vector<__cxx11::basic_string<char> > >]', declared with attribute 'nodiscard' [-Wunused-result]
   39 |     unique(vv.begin(), vv.end());
      |     ~~~~~~^~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:5:
/usr/include/c++/14/bits/stl_algo.h:891:5: note: declared here
  891 |     unique(_ForwardIterator __first, _ForwardIterator __last)
      |     ^~~~~~
Language: C++

#include <iostream>
#include <cmath>
#include <vector>
using namespace std;

const int INF = pow(2, 31) - 1;
#define ll long long
#define DEBUG(x) cout << "DEBUG>" << #x << ":" << x << endl;
#define REP(i,n) for(ll i=0;i<(n);i++)
#define FOR(i,a,b) for(ll i=(a);i<=(b);i++)
ll gcd(ll a,ll b){return b?gcd(b,a%b):a;}

int main() {
  string s;
  cin >> s;
  int K;
  cin >> K;
  vector<string> S;
  REP(i, K) {
    REP(j, s.size() - i) {
      S.push_back(s.substr(j, i + 1));
    }
  }
  sort(S.begin(), S.end());
  S.erase(unique(S.begin(), S.end()), S.end());
  cout << S[K - 1] << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:3: error: 'sort' was not declared in this scope; did you mean 'sqrt'?
   24 |   sort(S.begin(), S.end());
      |   ^~~~
      |   sqrt
a.cc:25:11: error: 'unique' was not declared in this scope
   25 |   S.erase(unique(S.begin(), S.end()), S.end());
      |           ^~~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  string s;
  int n;
  cin>>s>>n;
  set<string> ss;
  for(int i=0;i<s.size();i++){
    for(int j=1;j<6;j++){
      if(i+j<=s.size()){
        ss.insert(s.substr(i,j));
      }
    }
  }
  cout<<*((int)ss.begin()+n-1);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:11: error: invalid cast from type 'std::set<std::__cxx11::basic_string<char> >::iterator' {aka 'std::_Rb_tree<std::__cxx11::basic_string<char>, std::__cxx11::basic_string<char>, std::_Identity<std::__cxx11::basic_string<char> >, std::less<std::__cxx11::basic_string<char> >, std::allocator<std::__cxx11::basic_string<char> > >::const_iterator'} to type 'int'
   15 |   cout<<*((int)ss.begin()+n-1);
      |           ^~~~~~~~~~~~~~~
Language: Java

package abc097;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.InputMismatchException;
import java.util.List;
import java.util.Set;
import java.util.StringTokenizer;

public class C_4 {

	public static void main(String[] args) throws IOException {
		InputStream inputStream = System.in;
		OutputStream outputStream = System.out;
		InputReader in = new InputReader(inputStream);
		PrintWriter out = new PrintWriter(outputStream);
		TaskX solver = new TaskX();
		solver.solve(1, in, out);
		out.close();
	}

	static int INF = 1 << 30;
	static long LINF = 1L << 55;
	static int MOD = 1000000007;
	static int[] mh4 = { 0, -1, 1, 0 };
	static int[] mw4 = { -1, 0, 0, 1 };
	static int[] mh8 = { -1, -1, -1, 0, 0, 1, 1, 1 };
	static int[] mw8 = { -1, 0, 1, -1, 1, -1, 0, 1 };

	static class TaskX {

		public void solve(int testNumber, InputReader in, PrintWriter out) {

			String s = in.nextString();
			int n = s.length();
			int k = in.nextInt();

			Set<String> set = new HashSet<>();
			for (int i = 0; i < n; i++) {
				for (int j = 1; j <= 5; j++) {
					if (i + j > n) continue;
					set.add(s.substring(i, i+ j));
				}
			}
			List<String> list = new ArrayList<>(set);

			Collections.sort(list);
			out.println(list.get(k-1));
		}
	}

	static class InputReader {
		BufferedReader in;
		StringTokenizer tok;

		public String nextString() {
			while (!tok.hasMoreTokens()) {
				try {
					tok = new StringTokenizer(in.readLine(), " ");
				} catch (IOException e) {
					throw new InputMismatchException();
				}
			}
			return tok.nextToken();
		}

		public int nextInt() {
			return Integer.parseInt(nextString());
		}

		public long nextLong() {
			return Long.parseLong(nextString());
		}

		public double nextDouble() {
			return Double.parseDouble(nextString());
		}

		public InputReader(InputStream inputStream) {
			in = new BufferedReader(new InputStreamReader(inputStream));
			tok = new StringTokenizer("");
		}
	}

}


Compiler output:
Main.java:17: error: class C_4 is public, should be declared in a file named C_4.java
public class C_4 {
       ^
1 error
Language: C++

#include <iostream>
#include <string>
using namespace std;

int k, length, pointer;
string S, s[100005];

int main() {
    cin >> S >> k;
    length = S.size();

    for (int i = 1; i <= 5; i++) {
        for (int j = 0; j < length-1; j++) {
            s[pointer++] = S.substr(j, i);
        }
    }

    sort(s, s+pointer);
    unique(s, s+pointer);

    cout << s[k-1];
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   18 |     sort(s, s+pointer);
      |     ^~~~
      |     short
a.cc:19:5: error: 'unique' was not declared in this scope
   19 |     unique(s, s+pointer);
      |     ^~~~~~
Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
#include <numeric>
#include <cstdint>
#include <map>
#include <set>
#include <cmath>
#include <cstdlib>
#include <sstream>

#include <boost/range/irange.hpp>
using boost::irange;

#include <boost/utility/string_view.hpp>
using boost::string_view;

using namespace std;

int main()
{
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    size_t k;
    string s;
    cin >> s >> k;
    
    set<string_view> substrs;
    
    for(size_t l = 1; l <= s.size(); ++l)
    {
       for(size_t i = 0; i < s.size() - l + 1; ++i)
        {
            const auto ss = string_view(&s[i], l);
            //cout << '(' << i << ',' << l << ')' << ' ' << ss << '\n';
            if(substrs.size() < k)
            {
                substrs.insert(ss);                
            }
            else if(ss < *--end(substrs))
            {
                substrs.insert(ss);
                substrs.erase(--end(substrs));
            }
            //copy(begin(substrs), end(substrs), ostream_iterator<string>(std::cout, " ")); cout << endl;
        }
    }
    
    cout << *next(begin(substrs), k-1) << '\n';

    return 0;
}



Compiler output:
a.cc:12:10: fatal error: boost/range/irange.hpp: No such file or directory
   12 | #include <boost/range/irange.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <iostream>
#include <cstdlib>
#include <string>
#include <vector>
#include <cmath>
using namespace std;

int cmp_str(const char *s1, const char *s2)
{
    while(*s1==*s2){
        if(*s1=='\0') return 0;
        s1++;
        s2++;
    }
    return (*s1 - *s2);
}

int main()
{
    string s;
    int K;
    cin >> s >> K;
    vector<string> substrs;
    for(int i=0;i<s.length();i++){
        for(int len=1;len<6;len++){
            if(i+len>s.length()) break;
            string subs = s.substr(i,len);
            bool isunique = true;
            for(int j=0;j<substrs.size();j++){
                if(subs == substrs[j]) isunique = false;
            }
            if(isunique){
                substrs.push_back(subs);
            }
        }
    }
    sort(substrs.begin(), substrs.end());
    cout << substrs[K-1] << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:37:5: error: 'sort' was not declared in this scope; did you mean 'sqrt'?
   37 |     sort(substrs.begin(), substrs.end());
      |     ^~~~
      |     sqrt
Language: C++

#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")

#include <bits/stdc++.h>

using namespace std;
using ll = long long ;

const int N = 2e5 + 5;
const int mod = 1e9 + 7;
string str;
int k;
void solve(string cur, int & k){
  if(str.find(cur) != string::npos)k--;
  else return;
  if(!k){
    cout << cur << '\n';
    exit(0);
  }
  for(char c = 'a'; c <= 'z'; c++){
    solve(cur + c,k);
  }
}
int main(){

  cin >> str >> k;++k;atcoderandatcodeer
5
  solve("",k);



  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:26:23: error: 'atcoderandatcodeer' was not declared in this scope
   26 |   cin >> str >> k;++k;atcoderandatcodeer
      |                       ^~~~~~~~~~~~~~~~~~
Language: C++

#include <iostream>
#include <string>
#include <vector>
using namespace std;

int main(){
  string s;
  int K;
  vector<string> sub_s;
  cin >>  s >> K;
  for(int i = 0; i < s.length(); i++){
    for(int j = i; j < s.length(); j++){
      string sub_str = s.substr(i,j-i+1);
      if(sub_s.empty()) sub_s.push_back(sub_str);
      for(int k = 0; k < sub_s.size(); k++){
        if(sub_str == sub_s[k])  break;
        else if(k == sub_s.size() - 1){
          sub_s.push_back(sub_str);
          sort(sub_s.begin(),sub_s.end());
          if(sub_s.size() >= 6) sub_s.pop_back();
        }
      }
    }
  }

  cout << sub_s[K-1] << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:11: error: 'sort' was not declared in this scope; did you mean 'short'?
   19 |           sort(sub_s.begin(),sub_s.end());
      |           ^~~~
      |           short
Language: C++

#include <iostream>
#include <string>
#include <queue>
using namespace std;

int main(){
  string s;
  int K;
  vector<string> sub_s;
  cin >>  s >> K;
  for(int i = 0; i < s.length(); i++){
    for(int j = i; j < s.length(); j++){
      string sub_str = s.substr(i,j-i+1);
      if(sub_s.empty()) sub_s.push_back(sub_str);
      for(int k = 0; k < sub_s.size(); k++){
        if(sub_str == sub_s[k])  break;
        else if(k == sub_s.size() - 1){
          sub_s.push_back(sub_str);
          sort(sub_s.begin(),sub_s.end());
          if(sub_s.size() >= 6) sub_s.pop_back();
        }
      }
    }
  }

  cout << sub_s[K-1] << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:11: error: 'sort' was not declared in this scope; did you mean 'short'?
   19 |           sort(sub_s.begin(),sub_s.end());
      |           ^~~~
      |           short
Language: C++

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>

using namespace std;

int main(void) {

	string	s;
	int K;

	cin >> s;
	cin >> K;

	map<string, int> m;

	vector<string> vec;
	for (int i = 0; i < (int)s.size(); i++) {
		for (int j = 1; j <= (int)s.size(); j++) {
			string key = s.substr(i, j);
			vec.push_back(key);
		}
	}
	
	sort(vec.begin(), vec.end());
	unique(vec.begin(), vec.end());

	cout << vec[K - 1] << endl;
	return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:16:9: error: 'map' was not declared in this scope
   16 |         map<string, int> m;
      |         ^~~
a.cc:5:1: note: 'std::map' is defined in header '<map>'; this is probably fixable by adding '#include <map>'
    4 | #include <algorithm>
  +++ |+#include <map>
    5 | 
a.cc:16:19: error: expected primary-expression before ',' token
   16 |         map<string, int> m;
      |                   ^
a.cc:16:21: error: expected primary-expression before 'int'
   16 |         map<string, int> m;
      |                     ^~~
a.cc:27:15: warning: ignoring return value of '_FIter std::unique(_FIter, _FIter) [with _FIter = __gnu_cxx::__normal_iterator<__cxx11::basic_string<char>*, vector<__cxx11::basic_string<char> > >]', declared with attribute 'nodiscard' [-Wunused-result]
   27 |         unique(vec.begin(), vec.end());
      |         ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:4:
/usr/include/c++/14/bits/stl_algo.h:891:5: note: declared here
  891 |     unique(_ForwardIterator __first, _ForwardIterator __last)
      |     ^~~~~~
Language: C++

#include<iostream>
#include<string>
#include<algorithm>
using namespace std;

int k;

void check(string c){
  for (char a = 'a' a <= 'z'; a++){
    if(s.find(c + a) != string::npos){
      k--;
      if(k == 0){
        cout << c << a << endl;
        return;
      }
      check(c + a);
    }
  }
}
int main(){
  string s;
  cin >> s >> k;
  check("");
}


Compiler output:
a.cc: In function 'void check(std::string)':
a.cc:9:20: error: expected ';' before 'a'
    9 |   for (char a = 'a' a <= 'z'; a++){
      |                    ^~
      |                    ;
a.cc:10:8: error: 's' was not declared in this scope
   10 |     if(s.find(c + a) != string::npos){
      |        ^
Language: C

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
     
     
void copy(char *to,char *from,int n){
   int i;
   for(i=0;i<6;i++){
   if(i<nto[i] = from[i];
      else{
         to[i] = '\0';
      }
   }
}

int check(char *a,char *b){
   int i;
   for(i=0;i<5;i++){
      if(a[i] < b[i]){
         return -1;
      }
      else(a[i] > b[i]){	
          return 1;
      }
    }
      return 0;
}

int int_sort( const void * a , const void * b ) {
   return strcmp(( char * )a , ( char * )b );
 }

int main(void){
   char s[5001];
   int K;
   int i,j;
   scanf("%s",s);
   scanf("%d",&K);

   char kouho[25000][6];
    int index = 0;

  for(i=0;s[i] != '\0';i++){
    for(j=1; s[i+j-1] != '\0' ;j++){
       if(j>5) break;
       copy(kouho[index],&s[i],j);
       index++;
    }
  }
 
qsort(kouho,index,sizeof(kouho[0]),int_sort);
     
    int ex[25000];
    for(i=0;i<25000;i++){
      ex[i] = 1;
    }
      for(i=0;i<index;i++){
    	if(check(kouho[i],kouho[i+1]) == 0){
    	  ex[i+1] = -1;
        }
       }
	
   int count = 0,flag = 0;
   i = 0;
       while(flag <= K){
          if(ex[i] > 0){
    	     count = i;
             flag++;
          }
        i++;
    	}
 
    printf("%s",kouho[count-1]);

     return 0;
}

Compiler output:
main.c: In function 'copy':
main.c:9:9: error: 'nto' undeclared (first use in this function); did you mean 'to'?
    9 |    if(i<nto[i] = from[i];
      |         ^~~
      |         to
main.c:9:9: note: each undeclared identifier is reported only once for each function it appears in
main.c:9:25: error: expected ')' before ';' token
    9 |    if(i<nto[i] = from[i];
      |      ~                  ^
      |                         )
main.c:13:4: error: expected expression before '}' token
   13 |    }
      |    ^
main.c: In function 'check':
main.c:22:24: error: expected ';' before '{' token
   22 |       else(a[i] > b[i]){
      |                        ^
      |                        ;
Language: C

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int cmpfunc (const void * a, const void * b) {
   return strcmp((char*)a,(char*)b );
}

int main(){
char arr[25000][5]={},str[5000]={};
scanf("%s",str);
int K,i,rank=0;
scanf("%d",&K);
for(i=0;str[i]!='\0';i++){
for(int j=0;j<K;j++) for(int l=0;l<=j;l++);
arr[K*i+j][l]=str[l+i];
	}
   qsort(arr,K*i,K,cmpfunc);
   i=0;
   while(rank<5){
   if(i>0 && strcmp(arr[i],arr[i-1])>0) rank++;
i++;
     printf(arr[i-1]);
     return 0;
}

Compiler output:
main.c: In function 'main':
main.c:16:9: error: 'j' undeclared (first use in this function)
   16 | arr[K*i+j][l]=str[l+i];
      |         ^
main.c:16:9: note: each undeclared identifier is reported only once for each function it appears in
main.c:16:12: error: 'l' undeclared (first use in this function)
   16 | arr[K*i+j][l]=str[l+i];
      |            ^
main.c:25:1: error: expected declaration or statement at end of input
   25 | }
      | ^
Language: C++

// K-th Substring

#include <iostream>
#include <string>
#include <vector>

using namespace std;

int main(){
	string s;
	int K;
	cin >> s >> K;

	size_t slen = s.length();

	vector<string> subs;

	for (size_t i = 0; i < slen; ++i)
		for (size_t j = 1; j <= slen - i; ++j)
			subs.push_back(s.substr(i, j));

	sort (subs.begin(), subs.end());

	int cnt = 0;
	size_t subssize = subs.size();

	if (subssize == 1){
		cout << subs[0] << endl;
		return 0;
	}

	for (int i = 0; i < subssize-1; ++i)
		if (subs[i] != subs[i+1]){
			cnt++;
			if (cnt == K){
				cout << subs[i] << endl;
				return 0;
			}
		}

}


Compiler output:
a.cc: In function 'int main()':
a.cc:22:9: error: 'sort' was not declared in this scope; did you mean 'short'?
   22 |         sort (subs.begin(), subs.end());
      |         ^~~~
      |         short
Language: C++

// K-th Substring

#include <iostream>
#include <string>
#include <vector>

using namespace std;

int main(){
	string s;
	int K;
	cin >> s >> K;

	size_t slen = s.length();

	vector<string> subs;

	for (size_t i = 0; i < slen; ++i)
		for (size_t j = 1; j <= slen - i; ++j)
			subs.push_back(s.substr(i, j));

	sort (subs.begin(), subs.end());

	int cnt = 0;
	size_t subssize = subs.size();

	if (subssize == 1){
		cout << subs[0] << endl;
		return 0;
	}

	for (int i = 0; i < subssize-1; ++i)
		if (subs[i] != subs[i+1]){
			cnt++;
			if (cnt == K){
				cout << subs[i] << endl;
				break;
			}
		}

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:9: error: 'sort' was not declared in this scope; did you mean 'short'?
   22 |         sort (subs.begin(), subs.end());
      |         ^~~~
      |         short
Language: C++

#include<string>
#include<algorithm>
#include<map>
using namespace std;

int main() {
	string s;
	int k;
	map<string, int> m;

	cin >> s >> k;

	for (int i = 0; i < s.size(); ++i) {
		for (int k = 1; k <= 5; ++k) {
			m[s.substr(i, k)] = 1;
		}
	}

	auto itr = m.begin();
	for (int i = 0; i < k; ++i, ++itr);
	
	--itr;
	cout << (*itr).first << endl;

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:9: error: 'cin' was not declared in this scope
   11 |         cin >> s >> k;
      |         ^~~
a.cc:4:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    3 | #include<map>
  +++ |+#include <iostream>
    4 | using namespace std;
a.cc:23:9: error: 'cout' was not declared in this scope
   23 |         cout << (*itr).first << endl;
      |         ^~~~
a.cc:23:9: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:23:33: error: 'endl' was not declared in this scope
   23 |         cout << (*itr).first << endl;
      |                                 ^~~~
a.cc:4:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
    3 | #include<map>
  +++ |+#include <ostream>
    4 | using namespace std;
Language: C++

#include<cstdio>
#include<iostream>
#include<string>
#include<set>
using namespace std;
string S;
set<string>st;
set<string>::iterator it;

int main()
{
    string S; int k;
    while(cin >> S >> k){
    int n = S.length();
    for(int i = 0; i + 5 < n; i++){
        for(int j = 1; j <=5; j++){
            string substr1 = S.substr(i, j);
            st.insert(substr1);
        }
    }
    int id = 1;
    it = st.begin();
    while(id < 5){
        it++;
        id++
    }

    cout << *it << endl;
    }

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:25:13: error: expected ';' before '}' token
   25 |         id++
      |             ^
      |             ;
   26 |     }
      |     ~
Language: C++

#include <bits/stdc++.h>

using namespace std;

#define INF 1<<30
#define LINF 1ll<<60ll
#define MOD 1000000007
#define pb(a) push_back(a)
#define vi vector<int>
#define vl vector<long long>
#define vvi vector<vi>
#define P pair<int,int>
#define all(vec) (vec.begin()),(vec.end())
typedef long long ll;
typedef unsigned long long ull;
#define sz(x) ((int)(x).size())
#define in(x) int x;cin>>x
#define bit(n) (1<<(n))

#define REP(i, n) for(int i=0, i##_len=(n); i<i##_len; ++i)
#define REPR(i, n) for(int i = n;i >= 0;--i)
#define REP3(i, m, n) for(int i = m, i##_len=(n);i < i##_len;++i)
#define FORVEC(i, v) for(int i = 0;i < sz(v);++i)

template<class T>bool chmax(T &a,const T &b){if(a<b){a=b;return true;}return false;}
template<class T>bool chmin(T &a,const T &b){if(a>b){a=b;return true;}return false;}

#define fil0(i,n) cout<<swet(n)<<setfill('0')<<i<<resetiosflags(ios_base::floatfield)
#define YES(n) cout<<((n)?"YES":"NO")<<endl
#define Yes(n) cout<<((n)?"Yes":"No")<<endl
#define yes(n) cout<<((n)?"yes":"no")<<endl
#define possible(n) cout<<((n)?"possible":"impossible")<<endl
#define Possible(n) cout<<((n)?"Possible":"Impossible")<<endl


int main(){
    int s,k;
    set<string> subs;
    cin>>s>>k;
    int n=sz(s);
    REP(i,n){
        REP(j,max(k,n-i)){
            subs.insert(s.substr(i,j));
        }
    }
    for(auto a:subs){
        if(--k)cout<<a<<endl;
        break;
    }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:25: error: request for member 'size' in 's', which is of non-class type 'int'
   16 | #define sz(x) ((int)(x).size())
      |                         ^~~~
a.cc:40:11: note: in expansion of macro 'sz'
   40 |     int n=sz(s);
      |           ^~
a.cc:43:27: error: request for member 'substr' in 's', which is of non-class type 'int'
   43 |             subs.insert(s.substr(i,j));
      |                           ^~~~~~
Language: C++

#include <iostream>
#include <set>
#include <vector>
using namespace std;
set<string> ss;
vector<int> a[27];
int main() {
  string s;
  int k;
  cin >> s >> k;

  for(int i = 0; i < s.size(); i++) {
    a[s[i] - 'a'].push_back(i);
  }
 
 
    
    for(int i = 0; i < 26; i++) {
      if(ss.size() >= k) break;
      for(int j = 0; j < a[i].size(); j++) {
	for(int k = 1; a[i][j] + k <= s.size(); k++) {
	  string tmp = s.substr(a[i][j],k);
	  ss.insert(tmp);
        
	}
      }
    }
  }
  int l = 1;
  for(auto itr = ss.begin(); itr != ss.end(); ++itr) {
    if(l == k) {
      cout << *itr << endl;
      break;
    }
    l++;
  }
}
  


Compiler output:
a.cc:30:3: error: expected unqualified-id before 'for'
   30 |   for(auto itr = ss.begin(); itr != ss.end(); ++itr) {
      |   ^~~
a.cc:30:30: error: 'itr' does not name a type
   30 |   for(auto itr = ss.begin(); itr != ss.end(); ++itr) {
      |                              ^~~
a.cc:30:47: error: expected unqualified-id before '++' token
   30 |   for(auto itr = ss.begin(); itr != ss.end(); ++itr) {
      |                                               ^~
a.cc:37:1: error: expected declaration before '}' token
   37 | }
      | ^
Language: Java

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.Scanner;

import util.Utils;

public class Main {
    public static void main(String args[]) {
        try (Scanner in = new Scanner(System.in)) {
            String s = in.nextLine();
            int K = Integer.parseInt(in.nextLine());
            // StringBuilder sb = new StringBuilder();
            // for (int i = 0; i < 5000; i++) {
            // sb.append((char) ('a' + ((int) (26 * Math.random()))));
            // }
            // String s = sb.toString();
            // int K = 5;

            // char min = (char) 1e9;
            // ArrayList<Integer> indexes = new ArrayList<>();
            // for (int i = 0; i < s.length(); i++) {
            // char c = s.charAt(i);
            // if (c < min) {
            // min = c;
            // indexes.clear();
            // indexes.add(i);
            // } else if (c == min) {
            // indexes.add(i);
            // }
            // }
            //
            // if (K == 1) {
            // System.out.println(min);
            // return;
            // }

            HashSet<String> subs = new HashSet<>();
            // for (int i = 0; i < indexes.size(); i++) {
            for (int i = 0; i < s.length(); i++) {
                // int index = indexes.get(i).intValue();
                int index = i;
                for (int j = 0; j < K; j++) {
                    if (index + 1 + j <= s.length()) {
                        subs.add(s.substring(index, index + 1 + j));
                    }
                }
            }
            ArrayList<String> subs2 = new ArrayList<>();
            subs2.addAll(subs);
            Collections.sort(subs2);

            Utils.debug(subs2);

            System.out.println(subs2.get(K - 1));

        }
    }
}


Compiler output:
Main.java:6: error: package util does not exist
import util.Utils;
           ^
Main.java:53: error: cannot find symbol
            Utils.debug(subs2);
            ^
  symbol:   variable Utils
  location: class Main
2 errors
Language: Java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.util.*;

public class Substring {

    int[] inputArray;
    Set<String> set = new HashSet<>();

    public static void main(String[] args) throws IOException {
        new Main().run();
    }

    void run() {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        int num = sc.nextInt();
        substring(s, num);

        List<String> array = new ArrayList<>(set);

        Collections.sort(array);

        System.out.println(array.get(num-1));
    }

    void substring(String s, int num){
        for(int i=1; i<=num; i++){
            for(int j=0; j<num; j++){
                if(j + i-1 < num){
//                    System.out.println(s.substring(j, j+i));
                    set.add(s.substring(j, j+i));
                } else {
                    break;
                }
            }
        }
    }

    void permutation(String s, String ans){
        if(s.length() <= 1){
            System.out.println(ans + s);
        } else {
            for(int i=0; i<s.length(); i++){
                permutation(s.substring(0, i) + s.substring(i + 1), ans + s.charAt(i));
            }
        }
    }
}

Compiler output:
Main.java:7: error: class Substring is public, should be declared in a file named Substring.java
public class Substring {
       ^
Main.java:13: error: cannot access Main
        new Main().run();
            ^
  bad source file: ./Main.java
    file does not contain class Main
    Please remove or make sure it appears in the correct subdirectory of the sourcepath.
2 errors
Language: C++

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

int main(){
    string s;
    int k;
    cin>>s;
    cin>>k;
    set<string> sub;
    for(int i=0;i<s.size();i++){
        for(int j=1;i+j-1<s.size()&&j<=k);j++){
            sub.insert(s.substr(i,j));
        }
    }
    
    auto itr=sub.begin();
    for(int i=0;i<k-1;i++){
        itr++;
    }
    cout<<*itr<<endl;
    
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:41: error: expected ';' before ')' token
   11 |         for(int j=1;i+j-1<s.size()&&j<=k);j++){
      |                                         ^
      |                                         ;
a.cc:11:43: error: 'j' was not declared in this scope
   11 |         for(int j=1;i+j-1<s.size()&&j<=k);j++){
      |                                           ^
Language: C++

#include <iostream>
#include <string>
#include <vector>
using namespace std;

int main(){
  string s;
  int K;
  cin >> s >> K;
  int leng = s.size();
  vector<string> d;
  for (int i=0; i<K; i++){
    for (int l=0; l+i<leng; l++){
      d.push_back(s.substr(l, i+1));
    }
  }
  sort(d.begin(), d.end());
  d.erase(unique(d.begin(), d.end()), d.end());
  cout << d[K-1] << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:3: error: 'sort' was not declared in this scope; did you mean 'short'?
   17 |   sort(d.begin(), d.end());
      |   ^~~~
      |   short
a.cc:18:11: error: 'unique' was not declared in this scope
   18 |   d.erase(unique(d.begin(), d.end()), d.end());
      |           ^~~~~~
Language: C++

#include<iostream>
#include<vector>
using namespace std;

int main(){
    string s;
    int k;
    cin >> s >> k;
    vector<string> subs;
    int len = s.size();

    for(int i=0;i < len; i++){
        for(int j=1; j<k; j++){
            if(i + j < len){
                subs.push_back(s.substr(i, j));
            }
        }
    }
    sort(subs.begin(), subs.end());
    unique(subs.begin(), subs.end());

    cout << subs.at(k-1) << endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   19 |     sort(subs.begin(), subs.end());
      |     ^~~~
      |     short
a.cc:20:5: error: 'unique' was not declared in this scope
   20 |     unique(subs.begin(), subs.end());
      |     ^~~~~~
Language: C++

#include <iostream>
#include <vector>

using namespace std;
int main(){
    string s;
    cin>>s;
    int K;
    cin>>K;
    vector<string>ss;
    for(int i=0; i<s.size(); i++){
        int j=1;
        while(j<=5 && i+j<s.size()+1){
            ss.push_back(s.substr(i,j));
            j++;
        }
    }
    sort(ss.begin(),ss.end());
    ss.erase(unique(ss.begin(),ss.end()),ss.end());
    cout<<ss[K-1];

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   18 |     sort(ss.begin(),ss.end());
      |     ^~~~
      |     short
a.cc:19:14: error: 'unique' was not declared in this scope
   19 |     ss.erase(unique(ss.begin(),ss.end()),ss.end());
      |              ^~~~~~
Language: C++

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

int main(){
  int k, hozon, ansnum = 0;
  string ans;
  string s;
  cin >> s >> k;
  for(int i = 0; i < s.size(); i++){
    hozon = 0;
    string a = s.subtr(0, i);
    for(int j = 0; j <= i; j++){
      hozon += a[j] - '0';
    }
    if(ansnum =< hozon){
      ansnum = hozon;
      ans = a;
    }
  }
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:18: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'subtr'; did you mean 'substr'?
   11 |     string a = s.subtr(0, i);
      |                  ^~~~~
      |                  substr
a.cc:15:16: error: expected primary-expression before '<' token
   15 |     if(ansnum =< hozon){
      |                ^
Language: C++

#pragma GCC optimize("O3")
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <bits/stdc++.h>

#define DEBUG
#ifdef DEBUG
    #define IFD(...) __VA_ARGS__
    #define IFN(...)
    #define L cout<<__LINE__<<"\n";
    #define PRINT(...) __VA_ARGS__ cout<<__LINE__<" : "<<#__VA_ARGS__<<"\n"
    #define PRT(x) cout<<__LINE__<<" : "<<#x<<" = "<<x<<"\n"
#else // DEBUG
    #define IFD(...)
    #define IFN(...) __VA_ARGS__
    #define L
    #define PRINT(...) __VA_ARGS__
    #define PRT(x)
#endif // DEBUG

#define it iterator
#define rit reverse_iterator
#define mp make_pair
#define mems(a,b) memset(a,b,sizeof(a))
#define mem0(a) mems(a,0)
#define mem1(a) mems(a,1)
#define mem255(a) mems(a,255)
#define halt exit(0)
#define all(c) (c).begin() , (c).end()
#define sz(c) ((long long)((c).size()))
#define phb push_back
#define ppb pop_back
#define phf push_front
#define ppf pop_front
#define fort0(i,a,b) for(ll i=a,i##_TO=b;i<i##_TO;i++)
#define for0(i,n) fort0(i,0,n)
#define fort1(i,a,b) for(ll i=a,i##_TO=b;i<=i##_TO;i++)
#define for1(i,n) fort1(i,1,n)
#define ford(i,a,b) for(ll i=a,i##_TO=b;i>=i##_TO;i--)

using namespace __gnu_pbds;
using namespace std;

#define int ll

typedef long long ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

template
<
    class key,
    class val=null_type,
    class comp=less<key>
>
using ord_set=tree
<
    key,
    val,
    comp,
    rb_tree_tag,
    tree_order_statistics_node_update
>;

signed main()
{
  string s;
  int k;
  cin>>s>>k;
  assert(s.size()<=50);
  set<string> ss;
  for(int i=0;i<s.size();i++)
    for(int j=1;j<=min<int>(k,s.size()-i);j++)
      ss.insert(s.substring(i,j));
  k--;
  while(k--)
    ss.erase(ss.begin());
  cout<<*ss.begin();
}


Compiler output:
a.cc: In function 'int main()':
a.cc:75:19: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'substring'; did you mean 'substr'?
   75 |       ss.insert(s.substring(i,j));
      |                   ^~~~~~~~~
      |                   substr
Language: C++

s = input()
k = int(input())
arr = set()
arr.add(s)
for i in range(len(s)-1):
    for j in range(0, len(s)):
        arr.add(s[j:j+i+1])
    if len(arr) >= k: break
arr = list(arr)
arr.sort()
print(arr)
print(arr[k-1])


Compiler output:
a.cc:1:1: error: 's' does not name a type
    1 | s = input()
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define forx(i,a,b) for(int i=(a);i<(b);i++)
#define rep(j,n) for(int j=0;j<(n);j++)

typedef long long ll; 
typedef vector<int> veci;

int main()
{ 
    string s;
    int k;
    cin>>s>>k;
    vector<string>v;
    
    forx(i,0,s.size()){
      string t;
      for(int j=i;j<i+k&&j<s.size();j++){
        t+=s[j];
        v.push_back(t);
      }
      }
      erase(unique(v.begin(),v.end()),v.end());
      sort(v.begin(),v.end());
      cout<<v[k-1]<<endl;
   
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:23:7: error: 'erase' was not declared in this scope
   23 |       erase(unique(v.begin(),v.end()),v.end());
      |       ^~~~~
Language: C++

#include<stdio.h>
#include<string.h>
#include<algorithm>
using namespace std;
char str[5001];
char substr[50001][5];
int id[50001];
int k;
bool cmp(int a , int b){
      return strcmp(substr[a],substr[b]) < 0;
}
int main(){
  while(scanf("%s", str)!=EOF){
      int L = strlen(str);
      scanf("%d",&k);
      int cnt = 0;
      for(int j = 0; j < k; i++){
          for(int i = 0; i < L - j; i++){
              for(int k = 0; k <= j; k++){
                   substr[cnt][k] = str[i + k];
            }
            substr[cnt++][j + 1] = 0;
        }
     }
       for(int i = 0; i < cnt; i++){
             id[i] = i;
         }

     sort(id, id+cnt, cmp);

     int t=0;
     while(k  > 1 && t < cnt){
            while(t + 1 < cnt && strcmp(substr[t], substr[t + 1]) == 0)
                 t++;
            k--;
            t++;
        }
     printf("%s\n",substr[t]);
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:29: error: 'i' was not declared in this scope
   17 |       for(int j = 0; j < k; i++){
      |                             ^
Language: C++

#include<iostream>
#include <cmath>
#include <set>
#include <string>
#include <cstdio>
#include <vector>
#include <algorithm>

using namespace std;
typedef unsigned long ul;
typedef pair<ul, ul> P;

string s;
int k;

int main(){
  cin >> s >> k ;
  vector<string> vec;

  int tmp = min(s.size(),k);
  for(int i = 1 ; i <= tmp  ;i++){
    for(int j = 0 ; j <= s.size()-i; j++){
      vec.push_back(s.substr( j, i ));
    }
  }


  set<string> set1(vec.begin(), vec.end());
  vector<string> vec2(set1.begin(), set1.end());

  cout << vec2[k-1] << endl;


  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:20:16: error: no matching function for call to 'min(std::__cxx11::basic_string<char>::size_type, int&)'
   20 |   int tmp = min(s.size(),k);
      |             ~~~^~~~~~~~~~~~
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:20:16: note:   deduced conflicting types for parameter 'const _Tp' ('long unsigned int' and 'int')
   20 |   int tmp = min(s.size(),k);
      |             ~~~^~~~~~~~~~~~
/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:7:
/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:20:16: note:   mismatched types 'std::initializer_list<_Tp>' and 'long unsigned int'
   20 |   int tmp = min(s.size(),k);
      |             ~~~^~~~~~~~~~~~
Language: C++

#include<iostream>
#include <cmath>
#include <set>
#include <string>
#include <cstdio>
#include <vector>
#include <algorithm>

using namespace std;
typedef unsigned long ul;
typedef pair<ul, ul> P;

string s;
int k;

int main(){
  cin >> s >> k ;
  vector<string> vec;

  for(int i = 1 ; i <= min(s.size(),k) ;i++){
    for(int j = 0 ; j <= s.size()-i; j++){
      vec.push_back(s.substr( j, i ));
    }
  }


  set<string> set1(vec.begin(), vec.end());
  vector<string> vec2(set1.begin(), set1.end());

  cout << vec2[k-1] << endl;


  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:20:27: error: no matching function for call to 'min(std::__cxx11::basic_string<char>::size_type, int&)'
   20 |   for(int i = 1 ; i <= min(s.size(),k) ;i++){
      |                        ~~~^~~~~~~~~~~~
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:20:27: note:   deduced conflicting types for parameter 'const _Tp' ('long unsigned int' and 'int')
   20 |   for(int i = 1 ; i <= min(s.size(),k) ;i++){
      |                        ~~~^~~~~~~~~~~~
/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:7:
/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:20:27: note:   mismatched types 'std::initializer_list<_Tp>' and 'long unsigned int'
   20 |   for(int i = 1 ; i <= min(s.size(),k) ;i++){
      |                        ~~~^~~~~~~~~~~~
Language: C++

#include <iostream>
#include <vector>
#include <map>
#include <cmath>

using namespace std;

int main() {
  string s;
  int k;
  cin>>s>>k;

  map<string, bool> m;
  for(int i=0; i<s.length(); i++) {

    for(int j=1; j<=min(k, (int)s.length()-i); j++) {
      m[s.substr(i,j)] = true;
    }
  }


  for(auto x : m) {
    if(k==1) {
      cout<<x.first<<endl;
      break;
    }
    k--;
  }


Compiler output:
a.cc: In function 'int main()':
a.cc:28:4: error: expected '}' at end of input
   28 |   }
      |    ^
a.cc:8:12: note: to match this '{'
    8 | int main() {
      |            ^