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

#include <bits/stdc++.h>

#define rep(i,n) for(int i=0;i<(n);i++)

using namespace std;

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

	int n=s.length();
	vector<string> S;
	rep(i,n-4) rep(j,5) S.emplace(s.substr(i,j+1));

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

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

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:38: error: no matching function for call to 'std::vector<std::__cxx11::basic_string<char> >::emplace(std::__cxx11::basic_string<char>)'
   13 |         rep(i,n-4) rep(j,5) S.emplace(s.substr(i,j+1));
      |                             ~~~~~~~~~^~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/vector:66,
                 from /usr/include/c++/14/functional:64,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:53,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_vector.h:1348:9: note: candidate: 'template<class ... _Args> std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::emplace(const_iterator, _Args&& ...) [with _Args = {_Args ...}; _Tp = std::__cxx11::basic_string<char>; _Alloc = std::allocator<std::__cxx11::basic_string<char> >]'
 1348 |         emplace(const_iterator __position, _Args&&... __args)
      |         ^~~~~~~
/usr/include/c++/14/bits/stl_vector.h:1348:9: note:   template argument deduction/substitution failed:
a.cc:13:47: note:   cannot convert 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::substr(size_type, size_type) const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int](((std::__cxx11::basic_string<char>::size_type)i), ((std::__cxx11::basic_string<char>::size_type)(j + 1)))' (type 'std::__cxx11::basic_string<char>') to type 'std::vector<std::__cxx11::basic_string<char> >::const_iterator'
   13 |         rep(i,n-4) rep(j,5) S.emplace(s.substr(i,j+1));
      |                                       ~~~~~~~~^~~~~~~
Language: C++

#include <iostream>
#include <vector>
#include <string>
#include <unordered_map>
#include <cstring>

#define REP(i, a, b) for ( int i = (a); i < (b); i++ )
#define REVREP(i, a, b) for ( int i = (a); i >= (b); i--)
#define DEBUG_INT(var) printf("the value of "#var" is %d\n", var)
#define PRINT_ARRAY(name, i) printf("the value of "#name"[%d] is %d\n", (i), name[(i)])
#define DEBUG_ARRAY(name, begin, end) REP(i, begin, end) PRINT_ARRAY(name, i)


using namespace std;

typedef long long ll;

int K;
char s[5005];
vector<string> v;
unordered_map<string, bool> om;

int main(void) {
	scanf("%s", s);
	string S = s;
	int n = strlen(s);
	scanf("%d", &K);

    for (char c = 'a'; c <= 'z'; c++) {
    	REP(i, 0, n) {
    		if (s[i] == c) {
    			REP(j, 1, n - i + 1) {
    				string subs = S.substr(i, j);
    				if (!om[subs]) {
    					v.push_back(subs);
    					om[subs] = true;
    				}

    			}
    		}
    		
    	}
    	if (v.size() > 5) break;

    }
    sort(v.begin(), v.end());
/*
    REP(i, 0, n) {
    	cout << v[i] << endl;
    }
*/
    cout << v[K-1] << endl; 

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:46:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   46 |     sort(v.begin(), v.end());
      |     ^~~~
      |     short
Language: C++

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

#define REP(i, a, b) for ( int i = (a); i < (b); i++ )
#define REVREP(i, a, b) for ( int i = (a); i >= (b); i--)
#define DEBUG_INT(var) printf("the value of "#var" is %d\n", var)
#define PRINT_ARRAY(name, i) printf("the value of "#name"[%d] is %d\n", (i), name[(i)])
#define DEBUG_ARRAY(name, begin, end) REP(i, begin, end) PRINT_ARRAY(name, i)


using namespace std;

typedef long long ll;

int K;
char s[5005];
vector<string> v;
unordered_map<string, bool> om;

int main(void) {
	scanf("%s", s);
	string S = s;
	int n = strlen(s);
	scanf("%d", &K);

    for (char c = 'a'; c <= 'z'; c++) {
    	REP(i, 0, n) {
    		if (s[i] == c) {
    			REP(j, 1, n - i + 1) {
    				string subs = S.substr(i, j);
    				if (!om[subs]) {
    					v.push_back(subs);
    					om[subs] = true;
    				}

    			}
    		}
    		
    	}
    	if (v.size() > 5) break;

    }
    sort(v.begin(), v.end());
/*
    REP(i, 0, n) {
    	cout << v[i] << endl;
    }
*/
    cout << v[K-1] << endl; 

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:25:17: error: 'strlen' was not declared in this scope
   25 |         int n = strlen(s);
      |                 ^~~~~~
a.cc:5:1: note: 'strlen' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    4 | #include <unordered_map>
  +++ |+#include <cstring>
    5 | 
a.cc:45:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   45 |     sort(v.begin(), v.end());
      |     ^~~~
      |     short
Language: C++

#include <bits/stdc++.h>

#define rep(i, x, n) for (int i = x; i < n; i++)
typedef long long ll;

const int INF = 1e9 + 7;

using namespace std;

int main()
{
	cin.tie(0); ios::sync_with_stdio(false);

	string s;
	int k;
	cin >> s >> k;

	set<string> st;
	for (int i = 0; i < s.size(); i++) {
		for (int j = 1; j <= min((int)s.size() - i, k); j++)
			st.insert(s.substr(i, j));
	}

	int count = 0;
	for (auto it = st.begin(); it != st.end(); it++) {
		if (++count == k) {
			cout << *it << endl;
			break;
		}
	}

	return 0;

Compiler output:
a.cc: In function 'int main()':
a.cc:32:18: error: expected '}' at end of input
   32 |         return 0;
      |                  ^
a.cc:11:1: note: to match this '{'
   11 | {
      | ^
Language: C++

#include<iostream>
#include<string>
#include<queue>
#include<algorithm>
#include<map>
#include<set>
#include<vector>
#include<math.h>

using namespace std;

#define INF 1000000007
#define LINF (1LL << 62)

typedef long long i64;
typedef pair<i64,i64> P;


string s;
int k;
set<string> st;

int main(){
	cin >> s;
	cin >> k;
	int n = s.size();
	
	for(int i = 0; i < n; i++){
		for(int j = 1; j <= n-i && j <= k; j++){
			st.insert(s.substr(i,j));
		}
	}
	
	for(decltype(s)::iterator i = st.begin(); ; i++, k--){
		if(k == 1){
			cout << *i << endl;
			break;
		} 
	}
	
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:34:47: error: conversion from '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 non-scalar type 'std::__cxx11::basic_string<char>::iterator' requested
   34 |         for(decltype(s)::iterator i = st.begin(); ; i++, k--){
      |                                       ~~~~~~~~^~
Language: C++

#include<iostream>
#include<string>
#include<queue>
#include<algorithm>
#include<map>
#include<set>
#include<vector>
#include<math.h>

using namespace std;

#define INF 1000000007
#define LINF (1LL << 62)

typedef long long i64;
typedef pair<i64,i64> P;


string s;
int k;
set<string> st;

int main(){
	cin >> s;
	cin >> k;
	int n = s.size();
	
	for(int i = 0; i < n; i++){
		for(int j = 1; j <= n-i && j <= k; j++){
			st.insert(s.substr(i,j));
		}
	}
	
	for(iterator i = st.begin(); ; i++, k--){
		if(k == 1){
			cout << *i << endl;
			break;
		} 
	}
	
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:34:35: error: class template argument deduction failed:
   34 |         for(iterator i = st.begin(); ; i++, k--){
      |                                   ^
a.cc:34:35: error: no matching function for call to 'iterator(std::set<std::__cxx11::basic_string<char> >::iterator)'
In file included from /usr/include/c++/14/bits/stl_iterator_base_funcs.h:66,
                 from /usr/include/c++/14/string:47,
                 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_iterator_base_types.h:127:34: note: candidate: 'template<class _Category, class _Tp, class _Distance, class _Pointer, class _Reference> iterator()-> std::iterator<_Category, _Tp, _Distance, _Pointer, _Reference>'
  127 |     struct _GLIBCXX17_DEPRECATED iterator
      |                                  ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator_base_types.h:127:34: note:   candidate expects 0 arguments, 1 provided
/usr/include/c++/14/bits/stl_iterator_base_types.h:127:34: note: candidate: 'template<class _Category, class _Tp, class _Distance, class _Pointer, class _Reference> iterator(std::iterator<_Category, _Tp, _Distance, _Pointer, _Reference>)-> std::iterator<_Category, _Tp, _Distance, _Pointer, _Reference>'
/usr/include/c++/14/bits/stl_iterator_base_types.h:127:34: note:   template argument deduction/substitution failed:
a.cc:34:35: note:   'std::_Rb_tree_const_iterator<std::__cxx11::basic_string<char> >' is not derived from 'std::iterator<_Category, _Tp, _Distance, _Pointer, _Reference>'
   34 |         for(iterator i = st.begin(); ; i++, k--){
      |                                   ^
Language: C++

#include<iostream>
#include<string>
#include<queue>
#include<algorithm>
#include<map>
#include<set>
#include<vector>
#include<math.h>

using namespace std;

#define INF 1000000007
#define LINF (1LL << 62)

typedef long long i64;
typedef pair<i64,i64> P;


string s;
int k;
set<strting>t st;
t
int main(){
	cin >> s;
	cin >> k;
	int n = s.size();

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

	for(auto it = st.begin(); ; it++, k--){
		if(k == 1){
			cout << *it << endl;
			break;
		}
	}

	return 0;
}


Compiler output:
a.cc:21:5: error: 'strting' was not declared in this scope
   21 | set<strting>t st;
      |     ^~~~~~~
a.cc:21:12: error: template argument 1 is invalid
   21 | set<strting>t st;
      |            ^
a.cc:21:12: error: template argument 2 is invalid
a.cc:21:12: error: template argument 3 is invalid
a.cc:21:15: error: expected initializer before 'st'
   21 | set<strting>t st;
      |               ^~
a.cc:22:1: error: 't' does not name a type; did you mean 'tm'?
   22 | t
      | ^
      | tm
Language: C++

#include<iostream>
#include<vector>
#include<string>
using namespace std;
int main()
{
  string s;
  int k;
  int i, j;
  cin >> s;
  cin >> k;
    // 整数の入力
  int n;
  n = size(s);
  vector<string> st;
  for(i = 0; i < n; i++){
    for (j = i; j < i+k|| j < n; i++) {
      st.push_back(s.substr(i, j));
    }
  }
  sort(st.begin(), st.end());
  unique(st.begin(), st.end());
   cout << st[k] << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:3: error: 'sort' was not declared in this scope; did you mean 'short'?
   21 |   sort(st.begin(), st.end());
      |   ^~~~
      |   short
a.cc:22:3: error: 'unique' was not declared in this scope
   22 |   unique(st.begin(), st.end());
      |   ^~~~~~
Language: C++

#include<iostream>
#include<vector>
using namespace std;
int main()
{
  string s;
  int k;
  int i, j;
  cin >> s;
  cin >> k;
    // 整数の入力
  int n;
  n = size(s);
  vector<string> st;
  for(i = 0; i < n; i++){
    for (j = i; j < i+k|| j < n; i++) {
      st.push_back(s.substr(i, j));
    }
  }
  sort(st.begin(), st.end());
  unique(st.begin(), st.end());
   cout << st[k] << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:20:3: error: 'sort' was not declared in this scope; did you mean 'short'?
   20 |   sort(st.begin(), st.end());
      |   ^~~~
      |   short
a.cc:21:3: error: 'unique' was not declared in this scope
   21 |   unique(st.begin(), st.end());
      |   ^~~~~~
Language: C++

#include<iostream>
#include<string>
using namespace std;
int main()
{
  string s;
  int k;
  int i, j;
  cin >> s;
  cin >> k;
    // 整数の入力
  int n;
  n = size(s);
  vector<string> st;
  for(i = 0; i < n; i++){
    for (j = i; j < i+k|| j < n; i++) {
      st.push_back(s.substr(i, j));
    }
  }
  sort(st.begin(), st.end());
  unique(st.begin(), st.end());
   cout << st[k] << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:3: error: 'vector' was not declared in this scope
   14 |   vector<string> st;
      |   ^~~~~~
a.cc:2:1: note: 'std::vector' is defined in header '<vector>'; this is probably fixable by adding '#include <vector>'
    1 | #include<iostream>
  +++ |+#include <vector>
    2 | #include<string>
a.cc:14:16: error: expected primary-expression before '>' token
   14 |   vector<string> st;
      |                ^
a.cc:14:18: error: 'st' was not declared in this scope; did you mean 's'?
   14 |   vector<string> st;
      |                  ^~
      |                  s
a.cc:20:3: error: 'sort' was not declared in this scope; did you mean 'short'?
   20 |   sort(st.begin(), st.end());
      |   ^~~~
      |   short
a.cc:21:3: error: 'unique' was not declared in this scope
   21 |   unique(st.begin(), st.end());
      |   ^~~~~~
Language: C++

#include<iostream>
using namespace std;
int main()
{
  string s;
  int k;
  int i, j;
  cin >> s;
  cin >> k;
    // 整数の入力
  int n;
  n = size(s);
  vector<string> st;
  for(i = 0; i < n; i++){
    for (j = i; j < i+k|| j < n; i++) {
      st.push_back(s.substr(i, j));
    }
  }
  sort(st.begin(), st.end());
  unique(st.begin(), st.end());
   cout << st[k] << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:3: error: 'vector' was not declared in this scope
   13 |   vector<string> st;
      |   ^~~~~~
a.cc:2:1: note: 'std::vector' is defined in header '<vector>'; this is probably fixable by adding '#include <vector>'
    1 | #include<iostream>
  +++ |+#include <vector>
    2 | using namespace std;
a.cc:13:16: error: expected primary-expression before '>' token
   13 |   vector<string> st;
      |                ^
a.cc:13:18: error: 'st' was not declared in this scope; did you mean 's'?
   13 |   vector<string> st;
      |                  ^~
      |                  s
a.cc:19:3: error: 'sort' was not declared in this scope; did you mean 'short'?
   19 |   sort(st.begin(), st.end());
      |   ^~~~
      |   short
a.cc:20:3: error: 'unique' was not declared in this scope
   20 |   unique(st.begin(), st.end());
      |   ^~~~~~
Language: C++

#include <iostream>
#include <iomanip>
#include <vector>
#include <cmath>
#include <algorithm>
#include <iomanip>
#include <cstring>
#include <set>
#define rep(i, N) for (int i = 0; i < (int)N; i++)
using namespace std;
typedef long long ll;
const ll LLINF = 9223372036854775807;
const int MOD = 1000000007;

int main() {
  string s; cin >> s;
  int K; cin >> K;
  set<string> dict;
  rep(i, s.length()) {
    for(int j=1; j<=min(K, (int)s.length()-i); j++) {
      dict.insert(s.substr(i,j));
    }
  }

  // auto itr = dict.begin(); rep(i, K-1) { ++itr; cout << *itr << endl;}
  cout << *itr << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:26:12: error: 'itr' was not declared in this scope
   26 |   cout << *itr << endl;
      |            ^~~
Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <cmath>
#include <set>
#include <sstream>
#include <bitset>

#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n)  FOR(i,0,n)

typedef long long ll;

using namespace std;

int main() {

    string s;
    cin >> s;

    int k;
    cin >> k;

    int n = s.size();

    vector<string> vec;
    FOR(i, 0, n-j+1){
        FOR(j, 1, min(n,5)+1){
            vec.push_back(s.substr(i,j));
        }
    }

    sort(vec.begin(), vec.end());
    vec.erase(unique(vec.begin(), vec.end()), vec.end());

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

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:28:17: error: 'j' was not declared in this scope
   28 |     FOR(i, 0, n-j+1){
      |                 ^
a.cc:10:37: note: in definition of macro 'FOR'
   10 | #define FOR(i,a,b) for(int i=(a);i<(b);++i)
      |                                     ^
Language: C++

#pragma GCC optimize("O3")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target ("avx2")
#include <bits/stdc++.h>
using namespace std ;
#define ll long long
void FastInputOutput(){
    ios_base :: sync_with_stdio( 0 ) ;
    cin.tie( 0 ) ;
    cout.tie( 0 ) ;
}

inline int D(){
    int t ;
    scanf( "%d" , &t ) ;
    return t ;
}
inline ll LLD(){
    ll t ;
    scanf( "%lld" , &t ) ;
    return t ;
}
inline ll power(ll x, ll p, ll m){
    ll res = 1;
    while(p){
        if(p & 1)
            res = ((res % m) * (x % m)) % m;
        x = ((x % m) * (x % m)) % m;
        p >>= 1;
    }
    return res % m;
}
long double ModLog(long double base, long double x) {
    return (logl(x) / logl(base));
}
int gcd (int a, int b) {
    while (b) {
        a %= b;
        swap(a, b);
    }
    return a;
}
int lcm(int a, int b){
    return a / gcd(a, b) * b;
}
const ll P = 1e9 + 9;
const int N = 15 * 1e6 + 1, NN = 4e3 + 5;
int ans, n;
bool vst[NN];
int p[NN], idx;
void seive(){
    for(int i = 2; i < NN; ++i){
        if(vst[i])
            continue;
        p[idx++] = i;
        for(int j = i * i; j < NN; j += i)
            vst[j] = 1;
        
    }
}
inline int getInt(){
    char c;
    int ret = 0;
    while (isdigit(c = getchar())) {
        if(c == '\n')
            break;
        ret = (ret << 3) + ret + ret;
        ret += (c - '0');
    }
    return ret;
}
int main(){
    FastInputOutput();
    string s;
    cin >> s;
    set<string> st;
    for(int i = 0; i < s.size(); ++i){
        string t;
        for(int j = i; j < s.size(); ++j){
            t.push_back(s[j]);
            st.insert(t);
        }
    }
    int k = D();
    --k;
    for(auto t : st){
        if(!k){
            cout << t;
            break;
        }
        --k;
    }
}


Compiler output:
In file included from /usr/include/c++/14/string:43,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:4:
/usr/include/c++/14/bits/allocator.h: In destructor 'std::__cxx11::basic_string<char>::_Alloc_hider::~_Alloc_hider()':
/usr/include/c++/14/bits/allocator.h:182:7: error: inlining failed in call to 'always_inline' 'std::allocator< <template-parameter-1-1> >::~allocator() noexcept [with _Tp = char]': target specific option mismatch
  182 |       ~allocator() _GLIBCXX_NOTHROW { }
      |       ^
In file included from /usr/include/c++/14/string:54:
/usr/include/c++/14/bits/basic_string.h:186:14: note: called from here
  186 |       struct _Alloc_hider : allocator_type // TODO check __is_final
      |              ^~~~~~~~~~~~
Language: C++

#include <iostream>
#include <string>
#include <vector>
#include <math.h>
#include <stdio.h>
#include <algorithm>
#include <utility>
#include <functional>
#include <map>
#include <queue>
#include <list>
#define rep(i,n) for(int i=0;i<(n);i++)
#define REP(i,a,b) for(int i=int(a);i<int(b);++i)
#define crep(i) for(char i='a';i<='z';i++)
#define psortsecond(A,N) sort(A,A+N,[](const pii &a, const pii &b){return a.second<b.second;});
#define psortfirst(A,N) sort(A,A+N,[](const pii &a, const pii &b){return a.first<b.first;});
#define ALL(x) (x).begin(),(x).end()
int ctoi(const char c){
  if('0' <= c && c <= '9') return (c-'0');
  return -1;
}
using namespace std;
using pii  = pair<int,int>;
long long gcd(long long a, long long b){return (b == 0 ? a : gcd(b, a%b));}
long long lcm(long long a, long long b){return a*b/gcd(a,b);}
typedef long long ll;
#define MOD 1000000007
#define EPS 10e-8

string S;
string s[9];
int K;

void hantei(int i,int k,int j){
  if(k==K || j==K+1 || i+j>S.size()){
  }
  else if(S.substr(i,j)<=s[k] || s[k].size()==0){
    // if(S.substr(i,j)!=s[k]){
    //   for(int l=4;l>=k;l--){
    //     s[l]=s[l-1];
    //     }
    //   s[k]=S.substr(i,j);
    }
    hantei(i,k+1,j+1);
  }
  else{
    hantei(i,k+1,j);
  }
}

int main() {
  cin >> S >> K;
  rep(i,S.size()){
    hantei(i,0,1);
  }
  cout << s[K-1] << endl;
}

Compiler output:
a.cc:46:3: error: expected unqualified-id before 'else'
   46 |   else{
      |   ^~~~
a.cc:49:1: error: expected declaration before '}' token
   49 | }
      | ^
Language: C++

#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<bool> vb;
#define pb push_back
#define mp make_pair
#define f first
#define s second
#define in insert
#define FOR(i,a,b) for (int i = a; i < b; i++)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define speed ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
const int INF = 1e9 + 5;
int main(){
    string s;
    cin >> s;
    vector<string> v;
    for(int i = 0; i < s.size(); i++){
        for(int j = i; j < s.size(); j++){
            string d = s.substr(i, j - i + 1);
            v.pb(s);
        }
    }
    sort(all(v));
    cout << v[k-1];
}

Compiler output:
a.cc: In function 'int main()':
a.cc:29:15: error: 'k' was not declared in this scope
   29 |     cout << v[k-1];
      |               ^
Language: C++

#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<bool> vb;
#define pb push_back
#define mp make_pair
#define f first
#define s second
#define in insert
#define FOR(i,a,b) for (int i = a; i < b; i++)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define speed ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
const int INF = 1e9 + 5;
int main(){
    string s;
    cin >> s;
    vector<string> v;
    for(int i = 0; i < s.size(); i++){
        for(int j = i; j < s.size(); j++){
            string d = s.substr(i, j - i + 1);
            v.pb(s);
        }
    }
    sort(all(a));
    cout << v[k-1];
}

Compiler output:
a.cc: In function 'int main()':
a.cc:28:14: error: 'a' was not declared in this scope
   28 |     sort(all(a));
      |              ^
a.cc:14:17: note: in definition of macro 'all'
   14 | #define all(x) (x).begin(), (x).end()
      |                 ^
a.cc:29:15: error: 'k' was not declared in this scope
   29 |     cout << v[k-1];
      |               ^
Language: C++

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

int main(){
  string s;
  cin >> s;
  int k;
  cin >> k;
  set<string> se;
  for ( int i = 0; i < s.length(); i++){
    string tmp = "";
    int l = min(i+5, s.length());
    for ( int j = i; j < l; j++){
      tmp += s[j];
      se.insert(tmp);
    }
  }

  int i = 0;
  for ( set<string>::iterator it = se.begin(); it != se.end(); it++){
    i++;
    if(i != k )continue;
    cout << *it << endl;
  }

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:16: error: no matching function for call to 'min(int, std::__cxx11::basic_string<char>::size_type)'
   12 |     int l = min(i+5, s.length());
      |             ~~~^~~~~~~~~~~~~~~~~
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:12:16: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'})
   12 |     int l = min(i+5, s.length());
      |             ~~~^~~~~~~~~~~~~~~~~
/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:12:16: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   12 |     int l = min(i+5, s.length());
      |             ~~~^~~~~~~~~~~~~~~~~
Language: C++

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

int main(){
  string s;
  cin >> s;
  int k;
  cin >> k;
  set<string> se;
  for ( int i = 0; i < s.length(); i++){
    string tmp = "";
    for ( int j = i; j < min(i+5, s.length()) ; j++){
      tmp += s[j];
      se.insert(tmp);
    }
  }

  int i = 0;
  for ( set<string>::iterator it = se.begin(); it != se.end(); it++){
    i++;
    if(i != k )continue;
    cout << *it << endl;
  }

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:29: error: no matching function for call to 'min(int, std::__cxx11::basic_string<char>::size_type)'
   12 |     for ( int j = i; j < min(i+5, s.length()) ; 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:12:29: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'})
   12 |     for ( int j = i; j < min(i+5, s.length()) ; 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:12:29: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   12 |     for ( int j = i; j < min(i+5, s.length()) ; j++){
      |                          ~~~^~~~~~~~~~~~~~~~~
Language: C++

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

int main(){
  string s;
  cin >> s;
  int k;
  cin >> k;
  set<string> se;
  for ( int i = 0; i < s.length(); i++){
    for ( int j = 1; j <= s.length() - i; j++){
      se.insert(s.substr(i, j));
    }
  }

  int i = 0;
  for ( set<string>::iterator it = se.begin(); it != se.end(); it++){
    i++;
    if(i < k )continue;;
    if(i > k ) break
    cout << *it << endl;
  }

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:21: error: expected ';' before 'cout'
   20 |     if(i > k ) break
      |                     ^
      |                     ;
   21 |     cout << *it << endl;
      |     ~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define  rep(i, n) for(int i = 0; i < n; i++) 
#define  all(x) (x).begin(),(x).end()     // 昇順ソート
#define  rall(v) (v).rbegin(), (v).rend() // 降順ソート
#define  INF 1LL << 60
typedef long long int LL;
const int MOD = 1000000007;
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; }
//sort(all(x))とするとソートできるよ
// 10^x は pow(10,(x)) 
// 任意のlogは　対数の底の変換を使う    log(N) / log(任意の底)

int main(){
    string s;cin >> s;
    int K; cin >> K;
    vector<string> L;
    rep(i,s.size()){
        for(int j = 1;j <= 5;j++){
            if(i+j > s.size())break;
            L.push_back(substr(i,j));
        }
    }
    sort(all(L));
    int ct = 1;
    int ans = 0;
    rep(i,L.size()){
        if(K == ct){
            cout << L[ans] << endl;
            break;
        }
        else{
            if(L[i] == L[i+1]){
                ans++;
            }
            else{
                ct++;
                ans++;
            }
        }
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:25: error: 'substr' was not declared in this scope; did you mean 'strstr'?
   22 |             L.push_back(substr(i,j));
      |                         ^~~~~~
      |                         strstr
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define INF 1e9+7;

int main(){
  string S;
  cin>>S;
  ll K;
  cin>>K;
  
  vector<string>date;
  
  for(ll i=1;i<=S.size();i++){//iは範囲の大きさ
    for(ll j=0;j<S.size();j++){//範囲の初項
      if(j+i-1<S.size()){
       for(date)
    date.push_back(S.substr(j,i));
      }
    }
  }
  sort(date.begin(),date.end());
unique(date.begin(),date.end());
  
  cout<<date[K-1]<<endl;
}

 
 
  

}
 


Compiler output:
a.cc: In function 'int main()':
a.cc:17:16: error: expected ';' before ')' token
   17 |        for(date)
      |                ^
      |                ;
a.cc:19:7: error: expected primary-expression before '}' token
   19 |       }
      |       ^
a.cc:18:35: error: expected ';' before '}' token
   18 |     date.push_back(S.substr(j,i));
      |                                   ^
      |                                   ;
   19 |       }
      |       ~                            
a.cc:19:7: error: expected primary-expression before '}' token
   19 |       }
      |       ^
a.cc:18:35: error: expected ')' before '}' token
   18 |     date.push_back(S.substr(j,i));
      |                                   ^
      |                                   )
   19 |       }
      |       ~                            
a.cc:17:11: note: to match this '('
   17 |        for(date)
      |           ^
a.cc:19:7: error: expected primary-expression before '}' token
   19 |       }
      |       ^
a.cc:23:7: 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]
   23 | unique(date.begin(),date.end());
      | ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
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:1:
/usr/include/c++/14/bits/stl_algo.h:891:5: note: declared here
  891 |     unique(_ForwardIterator __first, _ForwardIterator __last)
      |     ^~~~~~
a.cc: At global scope:
a.cc:32:1: error: expected declaration before '}' token
   32 | }
      | ^
Language: C++

#include<iostream>
#include<string>
#include<cstdio>
#include<vector>
#include<cmath>
#include<algorithm>
#include<functional>
#include<iomanip>
#include<queue>
#include<ciso646>
#include<random>
#include<map>
#include<set>
#include<complex>
#include<bitset>
#include<stack>
#include<unordered_map>
#include<utility>
using namespace std;
typedef long long ll;
typedef unsigned int ui;
const ll mod = 1000000007;
typedef long double ld;
const ll INF = 1e+14;
typedef pair<int, int> P;
#define stop char nyaa;cin>>nyaa;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define Rep(i,sta,n) for(int i=sta;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
#define per1(i,n) for(int i=n;i>=1;i--)
#define Rep1(i,sta,n) for(int i=sta;i<=n;i++)
typedef complex<ld> Point;
const ld eps = 1e-8;
const ld pi = acos(-1.0);
typedef pair<ld, ld> LDP;
typedef pair<ll, ll> LP;
#define fr first
#define sc second
#define all(c) c.begin(),c.end()
#define pb push_back

void Yes(){
	cout<<"Yes"<<endl;
	exit(0);
}
 
void No(){
	cout<<"No"<<endl;
	exit(0);
}

//基本は全探索
//愚直だとN^3だけど、K番目だからK文字までで比べればNK^2おけ！！

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
    string s; cin >> s;
    int N = s.size();
    int K; cin >> K;
    vector<int> vec;
    rep(i, N) {
        rep1(len, K) {
            if(i + len - 1 > N - 1) continue;
            string a;
            rep(j, len) {
                a += s[i + j];
            }
            vec.pb(a);
        }
    }
    sort(vec.begin(), vec.end());
    cout << vec[K - 1] << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:70:19: error: no matching function for call to 'std::vector<int>::push_back(std::string&)'
   70 |             vec.pb(a);
      |             ~~~~~~^~~
In file included from /usr/include/c++/14/vector:66,
                 from a.cc:4:
/usr/include/c++/14/bits/stl_vector.h:1283:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = int; _Alloc = std::allocator<int>; value_type = int]'
 1283 |       push_back(const value_type& __x)
      |       ^~~~~~~~~
/usr/include/c++/14/bits/stl_vector.h:1283:35: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'const std::vector<int>::value_type&' {aka 'const int&'}
 1283 |       push_back(const value_type& __x)
      |                 ~~~~~~~~~~~~~~~~~~^~~
/usr/include/c++/14/bits/stl_vector.h:1300:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(value_type&&) [with _Tp = int; _Alloc = std::allocator<int>; value_type = int]'
 1300 |       push_back(value_type&& __x)
      |       ^~~~~~~~~
/usr/include/c++/14/bits/stl_vector.h:1300:30: note:   no known conversion for argument 1 from 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'std::vector<int>::value_type&&' {aka 'int&&'}
 1300 |       push_back(value_type&& __x)
      |                 ~~~~~~~~~~~~~^~~
Language: C++

#include<iostream>
#include<string>
#include<cstdio>
#include<vector>
#include<cmath>
#include<algorithm>
#include<functional>
#include<iomanip>
#include<queue>
#include<ciso646>
#include<random>
#include<map>
#include<set>
#include<complex>
#include<bitset>
#include<stack>
#include<unordered_map>
#include<utility>
using namespace std;
typedef long long ll;
typedef unsigned int ui;
const ll mod = 1000000007;
typedef long double ld;
const ll INF = 1e+14;
typedef pair<int, int> P;
#define stop char nyaa;cin>>nyaa;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define Rep(i,sta,n) for(int i=sta;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
#define per1(i,n) for(int i=n;i>=1;i--)
#define Rep1(i,sta,n) for(int i=sta;i<=n;i++)
typedef complex<ld> Point;
const ld eps = 1e-8;
const ld pi = acos(-1.0);
typedef pair<ld, ld> LDP;
typedef pair<ll, ll> LP;
#define fr first
#define sc second
#define all(c) c.begin(),c.end()
#define pb push_back

void Yes(){
	cout<<"Yes"<<endl;
	exit(0);
}
 
void No(){
	cout<<"No"<<endl;
	exit(0);
}

//基本は全探索
//愚直だとN^3だけど、K番目だからK文字までで比べればNK^2おけ！！

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
    string s; xin >> s;
    int N = s.size();
    int K; cin >> K;
    vector<int> vec;
    rep(i, N) {
        rep1(len, K) {
            if(i + len - 1 > N - 1) continue;
            string a;
            rep(j, len) {
                a += s[i + j];
            }
        }
        vec.pb(a);
    }
    sort(vec.begin(), vec.end());
    cout << vec[K - 1] << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:59:15: error: 'xin' was not declared in this scope; did you mean 'sin'?
   59 |     string s; xin >> s;
      |               ^~~
      |               sin
a.cc:71:16: error: 'a' was not declared in this scope
   71 |         vec.pb(a);
      |                ^
Language: Java

import java.util.*;

public class Main {
    static int k;
    static set<String> set;
    public static void main(String[] args) throws Exception {
        // Your code here!
        Scanner sc = new Scanner(System.in);
        String str = sc.next();
        k = sc.nextInt();
        set = new TreeSet<String>();
        int n = str.length();
        
        String[] array = new String[n];
        for (int i = 0; i < n; i++) {
            array[i] = String.valueOf(str.charAt(i));
        }
        
        solve("", array);
        
        int i = 1;
        for (String s : set) {
            if (i == k) {
                System.out.println(s);
                break;
            }
            i++;
        }

    }
    
    public static void solve(String str, String[] array) {
        Set<String> privateSet = new TreeSet<String>();
        
        for (int i = 0; i < array.length - (str.length() - 1); i++) {
            String str2 = "";
            for (int j = i; j < i + str.length(); j++) {
                str2 += array[j];
            }
            
            if (str.equals(str2) && i + str.length() < array.length) {
                privateSet.add(str2 + array[i + str.length()]);
            }
        }
        
        for (String s : privateSet) {
            set.add(s);
            if (set.size() >= k) return;
            solve(s, array);
        }
    }
}

Compiler output:
Main.java:5: error: cannot find symbol
    static set<String> set;
           ^
  symbol:   class set
  location: class Main
1 error
Language: C++

#include <bits/stdc++.h>
#define REP(i, n) for(ll i = 0; i < (ll)n; i++)
#define FOR(i, a, b) for(ll i = (a); i < (ll)b; i++)
#define ALL(obj) (obj).begin(), (obj).end()
#define INF 1000000000000000
using namespace std;
typedef long long ll;
typedef double db;
typedef string str;
typedef pair<ll, ll> p;
constexpr int MOD = 1000000007;
template <class T> inline bool chmin(T &a, T b) {
    if(a > b) {
        a = b;
        return true;
    }
    return false;
}
template <class T> inline bool chmax(T &a, T b) {
    if(a < b) {
        a = b;
        return true;
    }
    return false;
}

void print(const std::vector<int> &v) {
    std::for_each(v.begin(), v.end(), [](int x) { std::cout << x << " "; });
    std::cout << std::endl;
}

int main() {
    string s;
    int K;
    cin >> s;
    cin >> K;
    vector<string> vec;
    for (int i = 0; i < s.size(); i++)
    {
        //start
        for (int j = 1; j <= K; j++)
        {
            //length
            string tmp = s.substr(i,j);
            vec.push_back(tmp);
        }
    }
    sort(vec.begin(),vec.end());
    vec.erase(vec.unique(vec.begin(),vec.end()),vec.end());
    //ゴミの手前から最後までを消す
    cout<<vec[K-1]<<endl;
    
    // REP(i, K + 1) { cout << res[i] << endl; }
    cout << vec[K] << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:49:19: error: 'class std::vector<std::__cxx11::basic_string<char> >' has no member named 'unique'
   49 |     vec.erase(vec.unique(vec.begin(),vec.end()),vec.end());
      |                   ^~~~~~
Language: C++

#include <bits/stdc++.h>
#define REP(i, n) for(ll i = 0; i < (ll)n; i++)
#define FOR(i, a, b) for(ll i = (a); i < (ll)b; i++)
#define ALL(obj) (obj).begin(), (obj).end()
#define INF 1000000000000000
using namespace std;
typedef long long ll;
typedef double db;
typedef string str;
typedef pair<ll, ll> p;
constexpr int MOD = 1000000007;
template <class T> inline bool chmin(T &a, T b) {
    if(a > b) {
        a = b;
        return true;
    }
    return false;
}
template <class T> inline bool chmax(T &a, T b) {
    if(a < b) {
        a = b;
        return true;
    }
    return false;
}

void print(const std::vector<int> &v) {
    std::for_each(v.begin(), v.end(), [](int x) { std::cout << x << " "; });
    std::cout << std::endl;
}

int main() {
    string s;
    int K;
    cin >> s;
    cin >> K;
    vector<string> vec;
    for (int i = 0; i < S.size(); i++)
    {
        //start
        for (int j = 1; j <= K; j++)
        {
            //length
            string tmp = S.substr(i,j);
            vec.push_back(tmp);
        }
    }
    sort(vec.begin(),vec.end());
    vec.erase(vec.unique(vec.begin(),vec.end()),vec.end());
    //ゴミの手前から最後までを消す
    cout<<vec[K-1]<<endl;
    
    // REP(i, K + 1) { cout << res[i] << endl; }
    cout << res[K] << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:38:25: error: 'S' was not declared in this scope
   38 |     for (int i = 0; i < S.size(); i++)
      |                         ^
a.cc:49:19: error: 'class std::vector<std::__cxx11::basic_string<char> >' has no member named 'unique'
   49 |     vec.erase(vec.unique(vec.begin(),vec.end()),vec.end());
      |                   ^~~~~~
a.cc:54:13: error: 'res' was not declared in this scope
   54 |     cout << res[K] << endl;
      |             ^~~
Language: Java

import java.util.Scanner;
import java.util.ArrayList;

public class Main {
	static ArrayList<String> list = new ArrayList<>();
	static String s;
	static int N;
	static String[] array; 
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		s = sc.next();
		N = sc.nextInt();
		array = new String[N];
		array = s.split("");
		

		
	}
	/*
	 * kako 今まで
	 * kakoを足すのと足さないので分ける
	 */
	static String go(String s, int start) {
		list.add(array[start]);
		go(s + array[start], );
		go()
	}
}



Compiler output:
Main.java:25: error: illegal start of expression
		go(s + array[start], );
		                     ^
Main.java:26: error: ';' expected
		go()
		    ^
2 errors
Language: C++

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

int main() {
    string s; cin >> s;
    int k; cin >> k;
    int n = s.length();
    vector<string> subs;
    vector<vector<int>> index(26);
    for(int i = 0; i < n; i ++) {
        index[s[i]-97].push_back(i);
    }
    vector<int> priority;
    for(int i = 0; i < 26; i ++) {
        priority.insert(priority.end(), index[i].begin(), index[i].end());
    }
    for(int i = 0; i < n; i ++) {
        string tmp = "";
        for(int j = priority[i]; j < n; j ++) {
            if(!tmp.empty()&&tmp[j-1]!=tmp[j]) {
                tmp += s[j];
                subs.push_back(tmp);
            }
            if(tmp.length>k) break;
        }
    }
    sort(subs.begin(), subs.end());
    unique(subs.begin(), subs.end());
    cout << subs[k-1] << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:20: error: invalid use of member function 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::length() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]' (did you forget the '()' ?)
   24 |             if(tmp.length>k) break;
      |                ~~~~^~~~~~
      |                          ()
a.cc:28:11: 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]
   28 |     unique(subs.begin(), subs.end());
      |     ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
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:1:
/usr/include/c++/14/bits/stl_algo.h:891:5: note: declared here
  891 |     unique(_ForwardIterator __first, _ForwardIterator __last)
      |     ^~~~~~
Language: C++

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

/* メモリ食い過ぎ注意 */
#define int long long

typedef long long ll;

/* define const */
const ll INF = (1ll << 60);
const ll MOD = (ll)1e9 + 7;
/* end defineing */

signed main()
{
    string s1;
    int k;
    cin >> s1;
    cin >> k;
	cout << s1 << endl;


Compiler output:
a.cc: In function 'int main()':
a.cc:20:28: error: expected '}' at end of input
   20 |         cout << s1 << endl;
      |                            ^
a.cc:15:1: note: to match this '{'
   15 | {
      | ^
Language: C++

#include<iostream>
#include<cmath>
#include<numeric>
#include<string>
#include<algorithm>
#include<vector>
#include<map>
#define rep(i,n) for(int i=0;i<n;i++)
#define rep1(i,n) for(int i=1;i<n;i++)
#define int64 long long
#define yokuwaruprime (10*10*10*10*10*10*10*10*10+7)
using namespace std;

int main(){
  string s;
  cin>>s;
  int k,l=s.length();
  cin>>k;
  vector<string> v;
  rep1(i,k+1){
    rep(j,l-i+1){
      v.push_back(substr(j,i));
    }
  }
  sort(v.begin(),v.end());
  int count=1,ans;
  rep1(i,30000){
    if(v[i-1]!=v[i]){
      count++;
    }
    if(count==k){
      ans=i;
      break;
    }
  }
  cout<<v[ans];
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:19: error: 'substr' was not declared in this scope
   22 |       v.push_back(substr(j,i));
      |                   ^~~~~~
Language: Java

// 参考 -> #4669082

import java.util.Scanner;

public class ABC97_C {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        StringBuilder sb = new StringBuilder();

        String s = sc.next();
        int k = sc.nextInt();

        int cnt = 0;
        char target = 'a';
        while (cnt < k) {
            if (s.contains(sb.toString() + target)) {
                sb.append(target);
                cnt++;
                target = 'a';
                continue;
            }
            // ターゲットが見つからなかった場合
            if (target == 'z') {
                String tmp = sb.toString();
                target = tmp.charAt(tmp.length()-1);
                target++;
                sb.deleteCharAt(tmp.length()-1);
                continue;
            }
            target++;
        }

        System.out.println(sb.toString());
    }
}


Compiler output:
Main.java:5: error: class ABC97_C is public, should be declared in a file named ABC97_C.java
public class ABC97_C {
       ^
1 error
Language: C++

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

int main(){
  string s;
  cin >> s;
  
  int i = 0;
  char moji;
  car a[26];
  
  for(moji = 'a'; moji <='z'; moji++){
    a[i] = moji;
    i++;
  }
  
  int N = s.length(); int M = 0; int L = 0;
  int j , k;
  for(j = 0; j < 26; j++){
    L = M;
    for(i = 0; i < N; i++){
      if(a[j] == s[i]){
        M += N - i;
      }
    }
    if(M > K){
      k = j -1;
      break;
    }
  }
  
  cout << k << endl;
  return 0;
}
  
  
  
  

Compiler output:
a.cc: In function 'int main()':
a.cc:11:3: error: 'car' was not declared in this scope; did you mean 'char'?
   11 |   car a[26];
      |   ^~~
      |   char
a.cc:14:5: error: 'a' was not declared in this scope
   14 |     a[i] = moji;
      |     ^
a.cc:23:10: error: 'a' was not declared in this scope
   23 |       if(a[j] == s[i]){
      |          ^
a.cc:27:12: error: 'K' was not declared in this scope
   27 |     if(M > K){
      |            ^