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

#include<bits/stdc++.h>
#include <iostream>
#include <string>
#include <cmath>
using namespace std;
#define ll long long
#define rep(i, n) for (ll i = 0; i < (n); i++)
#define FOR(i,a,b) for(ll i=(a);i<(b);i++)
#define FORR(i,a,b)for(ll i=(a);i<=(b);i++)
#define repR(i,n) for(ll i=n;i>=0;i--)
#define all(v)(v).begin(),(v).end()
#define rall(v)(v).rbegin(),(v).rend()
#define F first
#define S second
#define pb push_back
#define pu push
#define COUT(x) cout<<(x)<<endl
#define PQ priority_queue<ll>
#define PQR priority_queue<ll,vector<ll>,greater<ll>>
#define YES(n) cout << ((n) ? "YES" : "NO"  ) << endl
#define Yes(n) cout << ((n) ? "Yes" : "No"  ) << endl
#define mp make_pair
#define maxs(x,y) (x = max(x,y))
#define mins(x,y) (x = min(x,y))
#define sz(x) (int)(x).size()
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
const ll MOD = 1000000007LL;
const ll INF = 1LL << 60;
using vll = vector<ll>;
using vb = vector<bool>;
using vvb = vector<vb>;
using vvll = vector<vll>;
using vstr = vector<string>;
using pll = pair<ll, ll>;
int main(){
  ll n;
  string s;
  cin>>n;
  cin>>s;
  ll r=0;
  ll l=0;
  rep(i,n){
    if(s[i]=='('){
      r++;
    }
    else if(r>0&&s[i]==')'){
      r--;
    }
  }
  for(int i=n-1;i>=0;i--){
    if(s[i]==')'){
      l++;
    }
    else if(l>0&&s[i]=='('){
      l--;
    }
  }
  vector<char> lll(0),rr(0)
  while(l){
    lll.pb('(');
    l--;
  }
  while(r){
    rr.pb(')');
    r--;
  }
  rep(i,sz(lll)){
    cout<<lll[i];
  }
  cout<<s;
  rep(i,sz(rr)){
    cout<<rr[i];
  }
}
  


Compiler output:
a.cc: In function 'int main()':
a.cc:60:3: error: expected ',' or ';' before 'while'
   60 |   while(l){
      |   ^~~~~
Language: C++

#include <iostream>
#include <sstream>
#include <algorithm>
#include <functional>
#include <iterator>
#include <numeric>
#include <cstdint>
#include <cmath>
#include <bitset>
#include <string>
#include <list>
#include <vector>
#include <stack>
#include <queue>
#include <set>
#include <map>

#define N_TIMES(i, n)     for ( uint64_t i = 0;     i <  n; ++i )
#define N_TIMES_REV(i, n) for (  int64_t i = n - 1; i >= 0; --i )

using namespace std;

int main()
{
  uint64_t N;
  cin >> N;

  string S;
  cin >> S;

  vector<int64_t> d(S.size() + 1, 0);
  N_TIMES(n, S.size()) { d[n + 1] = d[n] + ((S[n] == '(') ? +1 : -1); }
  debug(d);

  int64_t min_d = *min_element(d.begin(), d.end());
  string left(-min_d, '(');
  string right(d[S.size()] - min_d, ')');

  string T = left + S + right;
  cout << T << endl;

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:33:3: error: 'debug' was not declared in this scope
   33 |   debug(d);
      |   ^~~~~
Language: C++

#include <iostream>
#include <string>
using namespace std;
int main() {
  int n;
  cin >> n;
  string str;
  string s2;
  int left(0), right(0);
  while (n--) {
    char c;
    cin >> c;
    if (s2.empty() || !(s2.back() == '(' && c == ')')) {
      s2 += c;
      c == '(' ? left++ : right++;
    } else if (!s2.empty()) {
      s2.back() == '(' ? left-- : right--;
      s2.pop();
    }
    str += c;
  }
  cout << string('(', right) << str << string(')', left);
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:18:10: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'pop'
   18 |       s2.pop();
      |          ^~~
Language: C++

#include <iostream>
#include <string>

int main() {
  int n;
  cin >> n;
  string str;
  string s2;
  int left(0), right(0);
  while (n--) {
    char c;
    cin >> c;
    if (s2.empty() || !(s2.back() == '(' && c == ')')) {
      s2 += c;
      c == '(' ? left++ : right++;
    } else if (!s2.empty()) {
      s2.back() == '(' ? left-- : right--;
      s2.pop();
    }
    str += c;
  }
  cout << string('(', right) << str << string(')', left);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |   cin >> n;
      |   ^~~
      |   std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:7:3: error: 'string' was not declared in this scope
    7 |   string str;
      |   ^~~~~~
a.cc:7:3: note: suggested alternatives:
In file included from /usr/include/c++/14/iosfwd:41,
                 from /usr/include/c++/14/ios:40,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/bits/stringfwd.h:77:33: note:   'std::string'
   77 |   typedef basic_string<char>    string;
      |                                 ^~~~~~
In file included 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:
/usr/include/c++/14/string:76:11: note:   'std::pmr::string'
   76 |     using string    = basic_string<char>;
      |           ^~~~~~
a.cc:8:9: error: expected ';' before 's2'
    8 |   string s2;
      |         ^~~
      |         ;
a.cc:13:9: error: 's2' was not declared in this scope
   13 |     if (s2.empty() || !(s2.back() == '(' && c == ')')) {
      |         ^~
a.cc:20:5: error: 'str' was not declared in this scope; did you mean 'std'?
   20 |     str += c;
      |     ^~~
      |     std
a.cc:22:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   22 |   cout << string('(', right) << str << string(')', left);
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:22:33: error: 'str' was not declared in this scope; did you mean 'std'?
   22 |   cout << string('(', right) << str << string(')', left);
      |                                 ^~~
      |                                 std
Language: C++

#include <bits/stdc++.h>
#define rep(i, n) for (int i=0; i<(int)(n); i++)
#define all(v) v.begin(), v.end()
using namespace std;
using ll = long long;
using Graph = vector<vector<int>>;
const ll MOD = 1000000007;
const ll INF = 9999999999;
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;}
template<class T> inline T powerM(T a,T b){if (b==0) return a;
  T tmp = powerM(a,b/2); if (b%2==0) return tmp*tmp%MOD; else return tmp*tmp%MOD*a%MOD; }


int main() {
  int n; cin >>N;
  string s; cin >>s;
  int parL=0, parR=0;

  for (int i=0; i<n; i++){
    if (s.at(i) == '('){
      parR++;
    }else if (s.at(i) == ')'){
      if (parR == 0) parL++;
      else parR--;
    }
  }
  for (int i=0; i<parL; i++) cout <<'(';
  cout <<s;
  for (int i=0; i<parR; i++) cout <<')';
  cout <<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:16: error: 'N' was not declared in this scope
   16 |   int n; cin >>N;
      |                ^
Language: C

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

int main(){
  int n;
  cin >> n;
  string s;
  cin >> s;
  stack<char> stk;
  rep(i,n){
    if(!stk.empty() && (stk.top() == '(' && s.at(i) == ')')){
      stk.pop();
    }else{
      stk.push(s.at(i));
    }
  }
  int lcnt = 0;
  int rcnt = 0;
  while(!stk.empty()){
    if(stk.top() == '('){
      lcnt++;
    }else if(stk.top() == ')'){
      rcnt++;
    }
    stk.pop();
  }
  string result;
  rep(i,rcnt) result += '(';
  result += s;
  rep(i,lcnt) result += ')';
  cout << result << endl;
}

Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

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

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    int n;
    string s;
    cin >> n >> s;
    int l = 0, r = 0;
    int x = n;
    for(int i = 0; i < n; i++){
        if(s[i] == '(') l++;
        else r++;
        int d = l-r;
        x = min(x, d);
    }
    for(int i = 0; i < -x; i++) cout << "(";
    cout << s;
    for(int i = 0; i < d-x; i++) cout << ")";
    cout << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:24: error: 'd' was not declared in this scope
   20 |     for(int i = 0; i < d-x; i++) cout << ")";
      |                        ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define se second
#define all(x) (x).begin(), (x).end()
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define repp(i, a, b) for (int i = a; i <= (b); ++i)
#define repr(i, a, b) for (int i = a; i >= (b); --i)
#define bit(n) (1LL << (n))
typedef long long ll;
const int INF = 1001001001;
const ll LINF = 1001001001001001001ll;
const 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;
}

int main() {
  int N;
  cin >> N;
  string S;
  cin >> S;

  string T = S;
  rep(i, N) {
    rep(j, T.size() - 1) {
      if (T[j] == '(' && T[j + 1] == ')') {
        T.erase(T.begin() + j, T.begin() + j + 2);
        continue;
      }
    }
  }

  int cnt_l = 0, cnt_r = 0;
  if (i != 0) {
    rep(i, T.size()) {
      if (T[i] == ')')
        cnt_r++;
      else
        cnt_l++;
    }
  }

  reverse(all(S));
  rep(i, cnt_r) {
    S.pb('(');
  }

  reverse(all(S));
  rep(i, cnt_l) {
    S.pb(')');
  }

  cout << S << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:51:7: error: 'i' was not declared in this scope
   51 |   if (i != 0) {
      |       ^
Language: C++

#include<iostream>
#include<vector>
#include<string>
#include<cmath>
#include<algorithm>
#include <numeric>
#include<map>
#include<unordered_map>
 
using namespace std;
using ll=long long;
#define rep(i,n) for(int i=0;i<n;++i)
#define all_map(itr,mp) for(auto itr=mp.begin();itr!=mp.end();itr++)
#define ALL(a) (a).begin(),(a).end()

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

    int no = 0;
    while(s[no++] == ')' && no < n)s.insert(0, "("), no++;
    int cnt = 0;
    int pos = 0;

    rep(i, s.size()){
        if(s[i] == '(')cnt++;
        else cnt--;
        while(cnt < 0)s.insert(pos, "("), cnt++, i++;
        pos = i;
    }
    while(cnt < 0)s.insert(0, "("), cnt++;
    while(cnt > 0)s.insert(s.size(), ")"), cnt--

   
    cout << s;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:34:49: error: expected ';' before 'cout'
   34 |     while(cnt > 0)s.insert(s.size(), ")"), cnt--
      |                                                 ^
      |                                                 ;
......
   37 |     cout << s;
      |     ~~~~
Language: C++

#include<bits/stdc++.h>
#pragma GCC optimize("Ofast")
using namespace std;
#define all(x) (x).begin(),(x).end()
typedef long long ll;
#define rep(i,n) for(ll i=0, i##_len=(n); i<i##_len; ++i)
#define REP(i,num,n) for(ll i=num, i##_len=(n); i<i##_len; ++i)
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }
#define print(x) cout << (x) << endl;
#define sz(x) int(x.size())
 
ll gcd(ll a,ll b){return b?gcd(b,a%b):a;}
const ll LLINF = 1LL<<60;
const int INF = 1<<29;
const int MOD = 1000000007;
 
void add(long long &a, long long b) {
  a += b;
  if (a >= MOD) a -= MOD;
}
 
const int dx[8] = {1, 0, -1, 0, 1, -1, -1, 1};
const int dy[8] = {0, 1, 0, -1, 1, 1, -1, -1};


int main(void){
    cin.tie(0);
    ios::sync_with_stdio(false);
    cout<<fixed<<setprecision(10);
    int N; cin >> N;
    string S; cin >> S;

    int need_left = 0;
    int pointer = 0;
    rep(i,S.size()){
      if(S[i] == '(') ++pointer;
      else{
        if(pointer == 0) ++need_left++;
        else --pointer;
      }
    }
    int need_right = pointer;

    string res = "";
    for (int i = 0; i < need_left; ++i) res += '(';
    res += S;
    for (int i = 0; i < need_right; ++i) res += ')';
    cout << res << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:39:37: error: lvalue required as increment operand
   39 |         if(pointer == 0) ++need_left++;
      |                            ~~~~~~~~~^~
Language: C++

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

int main() {
  int n, i, count = 0, add = 0;
  string s;
  cin >> n >> s;
  
  for(i = 0; i < s.size(); i++){
    if(s.at(i) == ')'){
      count++;
      add = max(add, count);
    }
    else{
      count--;
      add = max(add, count);
    }
  }
  
  for(i = 0; i < add; i++){
    cout << "(";
  }
  cout << s;
  for(i = 0; i < addadd-count; i++){
    cout << ")";
  }
  cout << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:18: error: 'addadd' was not declared in this scope
   24 |   for(i = 0; i < addadd-count; i++){
      |                  ^~~~~~
Language: C++

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

using namespace std;

int main() {

    int N;
    cin >> N;
    string S;
    cin >> S;
    int l_sum = 0;
    vector<int> V;
    for (int i = 0; i < N; i++) {
        if (S[i] == '(') {
            l_sum++;
        }
        else l_sum--;
        V.push_back(l_sum);
    }

    int min = *min_element(V.begin(), V.end());

    if (V[N-1] - min > 0) {
        string temp(V[N-1] - min , ')');
        S += temp;
    }
    if (min < 0) {
        string temp( -min , '(');
        S = temp + S;
    }
    
    cout << S << '\n';

}


Compiler output:
a.cc: In function 'int main()':
a.cc:23:16: error: 'min_element' was not declared in this scope
   23 |     int min = *min_element(V.begin(), V.end());
      |                ^~~~~~~~~~~
Language: C++

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

int N;
string S;

void abc064d() {
  int cnt[2] = {0, 0};
  string res = S;
  if (S[0] == '(') {
    cnt[0]++;
  }
  else {
    cnt[1]++;
  }

  for (int i = 1; i < N; i++) {
    if (S[i] == '(') {
      cnt[0]++;
    }
    else if (S[i] == ')') {
      cnt[1]++;
    }

    if (S[i - 1] == ')' && S[i] == '(') {
      cout << ")( is found\n";
      int d = abs(cnt[0] - cnt[1]);
      if (cnt[0] > cnt[1]) {
        for (int j = 0; j < d; j++) {
          res = res + ")";
          cnt[1]++;
        }
        else {
          for (int j = 0; j <= d; j++) {
            res = "(" + res;
            cnt[0]++;
          }
        }
      }
    }
  }
  int d = abs(cnt[0] - cnt[1]);
  if (cnt[0] > cnt[1]) {
    for (int j = 0; j < d; j++) {
      res = res + ")";
      cnt[1]++;
    }
  }
  else {
    for (int j = 0; j < d; j++) {
      res = "(" + res;
      cnt[0]++;
    }
  }

  cout << res << "\n";
  return;
}

int main() {
  cin >> N >> S;
  abc064d();
  return 0;
}


Compiler output:
a.cc: In function 'void abc064d()':
a.cc:33:9: error: expected '}' before 'else'
   33 |         else {
      |         ^~~~
a.cc:28:28: note: to match this '{'
   28 |       if (cnt[0] > cnt[1]) {
      |                            ^
a.cc: At global scope:
a.cc:42:15: error: 'cnt' was not declared in this scope; did you mean 'int'?
   42 |   int d = abs(cnt[0] - cnt[1]);
      |               ^~~
      |               int
a.cc:42:24: error: 'cnt' was not declared in this scope; did you mean 'int'?
   42 |   int d = abs(cnt[0] - cnt[1]);
      |                        ^~~
      |                        int
a.cc:43:3: error: expected unqualified-id before 'if'
   43 |   if (cnt[0] > cnt[1]) {
      |   ^~
a.cc:49:3: error: expected unqualified-id before 'else'
   49 |   else {
      |   ^~~~
a.cc:56:3: error: 'cout' does not name a type
   56 |   cout << res << "\n";
      |   ^~~~
a.cc:57:3: error: expected unqualified-id before 'return'
   57 |   return;
      |   ^~~~~~
a.cc:58:1: error: expected declaration before '}' token
   58 | }
      | ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int n;
  cin>>n;
  int r=0;l=0;
  string s;
  cin>>s;
  for(int i=0;i<n;i++){
    if(s[i]=='('){
      l++;
    }else{
      if(l>0){
        l--;
      }else{
        r++;
      }
    }
  }
  for(int i=0;i<r;i++){
    cout<<'(';
  }
  cout<<s;
  for(int i=0;i<l;i++){
    cout<<')';
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:11: error: 'l' was not declared in this scope
    6 |   int r=0;l=0;
      |           ^
Language: C++

#include<bits/stdc++.h>
int main(){
  int n;
  cin>>n;
  string s;
  cin>>s;
  int cnt1=0,cnt2=0;
  for(int i=0; i<n; i++){
    cin>>s[i];
    if(s[i]=='('){cnt1++;}
    else{
      if(cnt1>0){cnt1--;}
      else b++;
    }
  }
  if(b>0){
    for(int i=0; i<b; i++){
      cout<<'(';
    }
  }
  cout<<s;
  if(a>0){
    for(int i=0; i<a; i++){
      cout<<')';
    }
  }
    cout<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:4:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    4 |   cin>>n;
      |   ^~~
      |   std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:5:3: error: 'string' was not declared in this scope
    5 |   string s;
      |   ^~~~~~
a.cc:5:3: note: suggested alternatives:
In file included from /usr/include/c++/14/string:41,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52:
/usr/include/c++/14/bits/stringfwd.h:77:33: note:   'std::string'
   77 |   typedef basic_string<char>    string;
      |                                 ^~~~~~
/usr/include/c++/14/string:76:11: note:   'std::pmr::string'
   76 |     using string    = basic_string<char>;
      |           ^~~~~~
a.cc:6:8: error: 's' was not declared in this scope
    6 |   cin>>s;
      |        ^
a.cc:13:12: error: 'b' was not declared in this scope
   13 |       else b++;
      |            ^
a.cc:16:6: error: 'b' was not declared in this scope
   16 |   if(b>0){
      |      ^
a.cc:18:7: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   18 |       cout<<'(';
      |       ^~~~
      |       std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:21:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   21 |   cout<<s;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:22:6: error: 'a' was not declared in this scope
   22 |   if(a>0){
      |      ^
a.cc:27:11: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   27 |     cout<<endl;
      |           ^~~~
      |           std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int n;cin>>n;
  string s;cin>.s;
  string t="",u="";
  vector<string> v={};
  int a=0;
  for(int i=0;i<n-1;i++){
    if(s[i]==')'&&s[i+1]=='('){
      v.push_back(substr(a,i-a+1));
      a=i+1;
    }
  }
  v.push_back(substr(a,n-a));
  for(int i=0;i<v.size();i++){
    int l=0,r=0;
    for(int j=0;j<v[i].size();j++){
      if(v[i][j]==')') l++;
      if(v[i][j]=='(') r++;
    }
    if(l>r){
      for(int k=0;k<l-r;k++){
        t+="(";
      }
    }
    if(l<r){
      for(int k=0;k<r-l;k++){
        u+=")";
      }
    }
  }
  cout<<t+s+u<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:16: error: expected primary-expression before '.' token
    5 |   string s;cin>.s;
      |                ^
a.cc:11:19: error: 'substr' was not declared in this scope; did you mean 'strstr'?
   11 |       v.push_back(substr(a,i-a+1));
      |                   ^~~~~~
      |                   strstr
a.cc:15:15: error: 'substr' was not declared in this scope; did you mean 'strstr'?
   15 |   v.push_back(substr(a,n-a));
      |               ^~~~~~
      |               strstr
Language: C++

//smartphone
#include "bits/stdc++.h"
using namespace std;
#define rep(i,n) for(int i=0;i<n;++i)
int main(){
 int n,a=0,b=0;cin>>n;if(!n)cout<<"()",return 0;
 string s;cin>>s;rep(i,n){
  a+=s[i]-'('?-1:1;
  b=min(a,b);}b=max(0,-b);
 if(a<0)rep(i,-a)s.insert(0,"(");else rep(i,a)s.push_back(')');
 rep(i,b-abs(a)){s.insert(0,"(");s.push_back(')');}cout<<s;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:40: error: expected primary-expression before 'return'
    6 |  int n,a=0,b=0;cin>>n;if(!n)cout<<"()",return 0;
      |                                        ^~~~~~
Language: C++

#include<iostream>
#include<cstdio>
#include<string>
#include<algorithm>
#include<utility>
#include<numeric>
#include<vector>
#include<map>
#include<unordered_map>
#include<set>
#include<tuple>
#include<stack>
#include<queue>
#include<functional>
#include<iterator>
#include<cmath>
#include<cctype>

using namespace std;

typedef long long ll;
typedef pair<int,int> P;

const int INF = 1e9;
const ll LINF = 1e18;

struct edge{int to,cost;};

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

	int n;
	string s;
	cin >> n >> s;
	
	int head=0;
	int l=0,r=0,ml=0;
	char prev='-';
	
	for(int i=0;i<n;i++){
		if(s[i]=='('){
			if(prev != ')') l++; //((((((
			else{ //))))(
				if(ml+l < r) {
					head+=r-(ml+l);
					ml = 0;
				else if(ml+l > r){
					ml += l - r;
				}else{
					ml = 0;
				}
				r=0;
				l=1; //自分の
				prev='(';
			}
		}else{//)
			if(prev!='(') r++; //)))))
			else{//(((()
				r++;
				prev=')';
			}
		}
		if(i==0) prev = s[0];
	}
//	cout << head << " " << ml << " " << l <<  " " << r << "\n";
	
	head += max(r-l-ml,0);
	for(int i=0;i<head;i++) cout << "(";
	cout << s;
	for(int i=0;i<ml+l-r;i++) cout << ")";
	cout << "\n";

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:48:33: error: expected '}' before 'else'
   48 |                                 else if(ml+l > r){
      |                                 ^~~~
a.cc:45:46: note: to match this '{'
   45 |                                 if(ml+l < r) {
      |                                              ^
Language: C++

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

int main()
{
    string s;
    string le, ri;
    int n = 0;
    int l = 0, r = 0;
    cin >> n >> s;
    for (int i = 0; i < n; i++) if (s[i] == ')') l++;
    for (int i = 0; i < n; i++) if (s[i] == '(') r++;

    for (int i = 0; i < n; i++) {
        if (s[i] == '(') {
            for (int j = i + 1; j < n; j++) {
                if (s[j] == ')') {
                    a--;
                    r--;
                  	l--;
                    break;
                }
            }
        }
    }


    for (int i = 0; i < l; i++) ri += '(';
    for (int i = 0; i < r; i++) le += ')';

    cout << ri << s << le << endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:21: error: 'a' was not declared in this scope
   18 |                     a--;
      |                     ^
Language: C++

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

int main() {
    int N;
    string s;
    cin >> N >> s;
    
    int x = 1e9 + 1;
    int d;
    for(int i = 0; i <= N; i++) {
        string ss = s.substr(0, i);
        int l = count(ss.begin(), ss.end(), '(');
        int r = count(ss.begin(), ss.end(), ')');
        d = l - r;
        x = min(x, d);
    }

    string ans = string(-x, '(') + s + string(d-x, ')');

    cout << ans << endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:17: error: 'count' was not declared in this scope
   14 |         int l = count(ss.begin(), ss.end(), '(');
      |                 ^~~~~
Language: Java

import org.apache.commons.lang3.*;

import java.util.*;

public class Main {
    public void main(Scanner sc) {
        int n = sc.nextInt();
        String s = sc.next();

        int lastClose = s.lastIndexOf(')');
        lastClose = lastClose == -1 ? n : lastClose;

        int firstOpen = s.indexOf('(');
        firstOpen = firstOpen == -1 ? 0 : firstOpen;

        int head = 0;
        for (int i = 0; i <= lastClose; i++) {
            head += (s.charAt(i) == ')') ? 1 : -1;
        }
        head = Math.max(0, head);

        int foot = 0;
        for (int i = n - 1; i >= firstOpen; i--) {
            foot += (s.charAt(i) == '(') ? 1 : -1;
        }
        foot = Math.max(0, foot);

        System.out.println(StringUtils.repeat('(', head) + s + StringUtils.repeat(')', foot));
    }

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        new Main().main(sc);
        sc.close();
    }
}


Compiler output:
Main.java:1: error: package org.apache.commons.lang3 does not exist
import org.apache.commons.lang3.*;
^
Main.java:28: error: cannot find symbol
        System.out.println(StringUtils.repeat('(', head) + s + StringUtils.repeat(')', foot));
                           ^
  symbol:   variable StringUtils
  location: class Main
Main.java:28: error: cannot find symbol
        System.out.println(StringUtils.repeat('(', head) + s + StringUtils.repeat(')', foot));
                                                               ^
  symbol:   variable StringUtils
  location: class Main
3 errors
Language: C++

#include <bits/stdc++.h>
using namespace std;
string s;
int n,d,c;
int main() {
	cin>>n>>s;
	for(int i=0;i<n;i++){if(s[i]=='(')c++;else c--;d=min(c,d);
	for(int i=0;i<-d;i++)cout<<'(';cout<<s;
	for(int i=0;i<c-d;i++)cout<<')';
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:2: error: expected '}' at end of input
   10 | }
      |  ^
a.cc:5:12: note: to match this '{'
    5 | int main() {
      |            ^
Language: C++

#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <cmath>
#include <cstdlib>
#include <tuple>

using ll = long long;
using namespace std;
#define modmod 1000000007


int main(){
    int N;
    string S;
    cin >> N >> S;
    int left=0, right=0;
    string result;
    for(int i = 0; i < N; i ++){
        if(S[i] == '('){
            left++;
        }else{
            right++;
        }
        result.push_back(S[i]);
        if(right > left){
            result.insert(ans.begin(),'(');
            left++;
        }
    }

    for(int i = 0; i < left-right; i ++){
        result.push_back(')');
    }

    printf("%s",result.c_str());

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:28:27: error: 'ans' was not declared in this scope; did you mean 'abs'?
   28 |             result.insert(ans.begin(),'(');
      |                           ^~~
      |                           abs
Language: C++

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

using namespace std;

pair<int,int> count_bra(string str){
    vector<int> d(str.length()+1);
    d[0] = 0;
    for(int j=0;j<str.length();j++){
        if(str[j] == '(') d[j+1] = d[j] + 1;
        if(str[j] == ')') d[j+1] = d[j] - 1;
    }
    return make_pair(*min_element(d.begin()+1, d.end()), d[str.length()]);
}

int main(){
    int N;
    string S;
    cin >> N >> S;
    int x,d;
    tie(x,d) = count_bra(S);
    cout << x << " " << d << endl;

    for(int i=0;i<abs(x);i++){
        S = '(' + S;
    }
    for(int i=0;i<d+abs(x);i++){
        S.push_back(')');
    }
    cout << S << endl;

    return 0;

}

Compiler output:
a.cc: In function 'std::pair<int, int> count_bra(std::string)':
a.cc:15:23: error: 'min_element' was not declared in this scope
   15 |     return make_pair(*min_element(d.begin()+1, d.end()), d[str.length()]);
      |                       ^~~~~~~~~~~
Language: C++

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

int main(){
	int n;
	string s;
	cin>>n>>s;
	int l=0,r=0,d=0;
	for(int i=0;i<s.size();++i){
		if(s[i]=='(') ++l;
		else ++r;
		chmax(d,r-l);
	}
	string ans(d,'(');
	ans+=s;
	ans.append(l+d-r,')');
	cout<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:17: error: 'chmax' was not declared in this scope
   12 |                 chmax(d,r-l);
      |                 ^~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define loop(i, a, b) for(int i = a; i < b; i++)
#define rep(i, a) loop(i, 0, a)
#define all(a) (a).begin(),(a).end()
using namespace std;
const int MOD = 1e9 + 7, INF = 1e9;
using vi = vector <int>;
using vvi = vector <vi>;

int main(){
    int n;  string s;
    cin >> n >> s;
    int num_right = 0;
    rep(i, n){
        if(s[i] == ')')num_right++;
    }
    int num_left = num_right;
    if(num_right > num_left)
        rep(i, num_right - num_left)
            cout << "(";
        cout << s << endl;
    else{
        cout << s;
        rep(i, num_left - num_right)
            cout << ")";
        cout << endl;
    }

}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:5: error: 'else' without a previous 'if'
   23 |     else{
      |     ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define loop(i, a, b) for(int i = a; i < b; i++)
#define rep(i, a) loop(i, 0, a)
#define all(a) (a).begin(),(a).end()
using namespace std;
const int MOD = 1e9 + 7, INF = 1e9;
using vi = vector <int>;
using vvi = vector <vi>;

int main(){
    int n;  string s;
    cin >> n >> s;
    int num_right = 0;
    rep(i, n){
        if(s[i] == ')')num_right++;
    }
    int num_left = num_right;
    if(num_right > num_left)
        rep(i, num_right - num_left)
            cout << "(";
        cout << s << endl;
    else{
        cout << s;
        rep(i, num_left - num_right)
            cout << ")";
    }

}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:5: error: 'else' without a previous 'if'
   23 |     else{
      |     ^~~~
Language: C++

#include<stdio.h>
#include<malloc.h>

int main() {
    int N;
    char* S;
    char* stack[101];
    int stack_number = 0;
    int i, j;
    int left_count = 0;
    int right_count = 0;

    scanf("%d", &N);

    S = (char *)malloc(sizeof(char) * (N+1));

    scanf("%s", S);

    for(i = 0; i < N; i++) {
        stack[stack_number] = S[i];
        stack_number++;
        if(stack_number > 1 && stack[stack_number-1] == ')') {
            for(j = stack_number-2; j >= 0; j--) {
                if(stack[j] == '(') {
                    stack_number -= 2;
                    break;
                }
            }
        }
    }

    for(i = 0; i < stack_number; i++) {
        if(stack[i] == '(') left_count++;
        else right_count++;
    }

    for(i = 0; i < right_count; i++) putchar('(');
    printf("%s", S);
    for(i = 0; i < left_count; i++) putchar(')');

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:34: error: invalid conversion from 'char' to 'char*' [-fpermissive]
   20 |         stack[stack_number] = S[i];
      |                               ~~~^
      |                                  |
      |                                  char
a.cc:22:54: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   22 |         if(stack_number > 1 && stack[stack_number-1] == ')') {
      |                                ~~~~~~~~~~~~~~~~~~~~~~^~~~~~
a.cc:24:29: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   24 |                 if(stack[j] == '(') {
      |                    ~~~~~~~~~^~~~~~
a.cc:33:21: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   33 |         if(stack[i] == '(') left_count++;
      |            ~~~~~~~~~^~~~~~
Language: C++

#include <vector> // vectorを使うためにインクルードする
#include <iostream>
#include the <algorithm>
using namespace std;


int main() {
	int N;
	cin >> N;
	vector<int> vec;
	string s;
	cin >> s;
	for(int i=0;i<N;i++){
		if(i==0){
			if(s[i]=='(')vec.push_back(1);
			else{vec.push_back(-1);}
		}
		else if(s[i]=='('){vec.push_back(vec[i-1]+1);}
		else{vec.push_back(vec[i-1]-1);}
	}

		int mini = -1*(*min_element(vec.begin(),vec.end()));
		if(mini<0)mini=0;
		int last = mini + vec[N-1];

    for(int i=0;i<mini;i++){
			cout << "(";
		}
		for(int i=0;i<N;i++){
			cout << s[i];
		}
		for(int i=0;i<last;i++){
			cout << ")";
		}
		cout << endl;

	}


Compiler output:
a.cc:3:10: error: #include expects "FILENAME" or <FILENAME>
    3 | #include the <algorithm>
      |          ^~~
a.cc: In function 'int main()':
a.cc:22:33: error: 'min_element' was not declared in this scope
   22 |                 int mini = -1*(*min_element(vec.begin(),vec.end()));
      |                                 ^~~~~~~~~~~
Language: C++

#include <vector> // vectorを使うためにインクルードする
#include <iostream>
using namespace std;


int main() {
	int N;
	cin >> N;
	vector<int> vec;
	string s;
	cin >> s;
	for(int i=0;i<N;i++){
		if(i==0){
			if(s[i]=='(')vec.push_back(1);
			else{vec.push_back(-1);}
		}
		else if(s[i]=='('){vec.push_back(vec[i-1]+1);}
		else{vec.push_back(vec[i-1]-1);}
	}

		int mini = -1*(*min_element(vec.begin(),vec.end()));
		if(mini<0)mini=0;
		int last = mini + vec[N-1];

    for(int i=0;i<mini;i++){
			cout << "(";
		}
		for(int i=0;i<N;i++){
			cout << s[i];
		}
		for(int i=0;i<last;i++){
			cout << ")";
		}
		cout << endl;

	}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:33: error: 'min_element' was not declared in this scope
   21 |                 int mini = -1*(*min_element(vec.begin(),vec.end()));
      |                                 ^~~~~~~~~~~
Language: C++

#include <vector> // vectorを使うためにインクルードする
#include <iostream>
using namespace std;


int main() {
	int N;
	cin >> N;
	vector<int> vec;
	string s;
	cin >> s;
	for(int i=0;i<N;i++){
		if(i==0){
			if(s[i]=='(')vec.push_back(1);
			else{vec.push_back(-1);}
		}
		else if(s[i]=='('){vec.push_back(vec[i-1]+1);}
		else{vec.push_back(vec[i-1]-1);}
	}

		int mini = -1*(*std::min_element(vec.begin(),vec.end()));
		if(mini<0)mini=0;
		int last = mini + vec[N-1];

    for(int i=0;i<mini;i++){
			cout << "(";
		}
		for(int i=0;i<N;i++){
			cout << s[i];
		}
		for(int i=0;i<last;i++){
			cout << ")";
		}
		cout << endl;

	}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:38: error: 'min_element' is not a member of 'std'; did you mean 'tuple_element'?
   21 |                 int mini = -1*(*std::min_element(vec.begin(),vec.end()));
      |                                      ^~~~~~~~~~~
      |                                      tuple_element
Language: C++

#include <vector> // vectorを使うためにインクルードする
#include <iostream>
using namespace std;


int main() {
	int N;
	cin >> N;
	vector<int> vec;
	string s;
	cin >> s;
	for(int i=0;i<N;i++){
		if(i==0){
			if(s[i]=='(')vec.push_back(1);
			else{vec.push_back(-1);}
		}
		else if(s[i]=='('){vec.push_back(vec[i-1]+1);}
		else{vec.push_back(vec[i-1]-1);}
	}

		int min = -1*(*std::min_element(vec.begin(),vec.end()));
		if(min<0)min=0;
		int last = min + vec[N-1];

    for(int i=0;i<min;i++){
			cout << "(";
		}
		for(int i=0;i<N;i++){
			cout << s[i];
		}
		for(int i=0;i<last;i++){
			cout << ")";
		}
		cout << endl;

	}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:37: error: 'min_element' is not a member of 'std'; did you mean 'tuple_element'?
   21 |                 int min = -1*(*std::min_element(vec.begin(),vec.end()));
      |                                     ^~~~~~~~~~~
      |                                     tuple_element
Language: C++

#include <vector> // vectorを使うためにインクルードする
#include <iostream>
using namespace std;


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



	for(int i=0;i<N;i++){
		if(i==0){
			if(s[i]=='(')vec.push_back(1);
			else{vec.push_back(-1);}
		}
		else if(s[i]=='('){vec.push_back(vec[i-1]+1);}
		else{vec.push_back(vec[i-1]-1);}
	}

		int min = -1*(*min_element(vec.begin(),vec.end()));
		if(min<0)min=0;
		int last = min + vec[N-1];

    for(int i=0;i<min;i++){
			cout << "(";
		}
		for(int i=0;i<N;i++){
			cout << s[i];
		}
		for(int i=0;i<last;i++){
			cout << ")";
		}
		cout << endl;

	}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:32: error: 'min_element' was not declared in this scope
   24 |                 int min = -1*(*min_element(vec.begin(),vec.end()));
      |                                ^~~~~~~~~~~
Language: C++

#include "stdafx.h"
#include<string.h>

int main(void) {
	char str[100];
	char str1[10] = "";
	char str2[10] = "";
	int i, a;
	int num = 0;
	int num2 = 0;
	int sum = 0;

	scanf("%d", &a);
	scanf("%s", str);

	for (i = 0; i<100; i++) {
		if (str[i] == '(') {
			num++;
		}
	}
	for (i = 0; i<100; i++) {
		if (str[i] == ')') {
			num2++;
		}
	}

	if (num < num2) {
		sum = num2 - num;
		for (i = 0; i < sum; i++) {
			strcat(str1,"(");
		}
		printf("%s%s\n", str1, str);
	}
	if (sum > num2) {
		sum = num - num2;
		for (i = 0; i < sum; i++) {
			strcat(str1, ")");
		}
		printf("%s%s\n", str, str1);
	}
	if (num == num2) {
		for (i = 0; i < num; i++) {
			strcat(str1, "(");
			strcat(str2, ")");
		}
		printf("%s%s%s", str1, str, str2);
	}
	return 0;
}

Compiler output:
a.cc:1:10: fatal error: stdafx.h: No such file or directory
    1 | #include "stdafx.h"
      |          ^~~~~~~~~~
compilation terminated.
Language: Java

import java.util.*;
import java.io.*;
     
public class Main2{
    static PrintWriter out;
    static Scanner in;
    public static void main(String args[]){
	in = new Scanner(System.in);
	out = new PrintWriter(System.out);
	solve();
	in.close();
	out.close();
    }
     
    public static void solve(){
        int N = in.nextInt();
	String S = in.next();
	char[] C = S.toCharArray();
	int migi = 0;
	int migil = 0;
	int left = 0;
	int leftm = 0;
	for(int i=0;i<N;i++){
	    if(C[i]=='('){
		migil++;
	    }else if(C[i]==')'&&migil<=0){
		migi++;
	    }else if(C[i]==')'&&migil>0){
		migil--;
	    }

	    if(C[N-i-1]==')'){
		leftm++;
	    }else if(C[N-i-1]=='('&&leftm<=0){
		left++;
	    }else if(C[N-i-1]=='('&&leftm>0){
		leftm--;
	    }
	}
	for(int i=0;i<migi;i++)
	    out.print('(');
	for(int i=0;i<N;i++)
	    out.print(C[i]);
	for(int i=0;i<left;i++)
	    out.print(')');

	out.println();	    
    }
}


Compiler output:
Main.java:4: error: class Main2 is public, should be declared in a file named Main2.java
public class Main2{
       ^
1 error
Language: Java

import java.io.*;

public class Main2 {
    public static void main(String[] args) throws IOException{
	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
	int  num = Integer.parseInt(br.readLine());
	String s = br.readLine();
	int left = 0;
	int right =0;
	for (int i = 0; i < num; i++) {
	    if(s.charAt(i) == '(') left++;
	    else right++;
	    if (left  < right) {
		s = "(" + s;
		num++;
		left++;
	    }
	}
	for (int i = left - right; i > 0; i--) {
	    s = s + ")";
	}
	System.out.println(s);
    }
}


Compiler output:
Main.java:3: error: class Main2 is public, should be declared in a file named Main2.java
public class Main2 {
       ^
1 error
Language: C++

#include<cstdio>
#include<cstdlib>
#include<cmath>
#include<iostream>
#include<string>
#include<stack>
#include<queue>
#include<vector>
#include<map>
#include<set>
#include<algorithm>

#define rep(n) for(int i=0;i<n;i++)
#define repp(j, n) for(int j=0;j<n;j++)
#define reppp(i, m, n) for(int i=m;i<=n;i++)
#define all(c) c.begin(), c.end()
#define rall(c) c.rbegin(), c.rend()
#define pb(x) push_back(x)
#define eb(x,y) emplace_back(x,y)
#define MOD 1000000007
#define MAX 1000000001
#define INF 1410065408
#define EPS 1e-9
 
using namespace std;
typedef long long ll;
typedef pair<ll, ll> P;
struct edge{int from, to; ll cost;};

signed main(){
    int n;
    cin >> n;
    string s, pre = ", post = ";
    cin >> s;
    int tmp = 0;
    rep(n){
        if(s[i] == '('){
            tmp++;
        }else{
            if(tmp > 0){
                tmp--;
            }else{
                pre += '(';
            }
        }
    }
    while(tmp > 0){
        post += ')';
        tmp--;
    }
    cout << pre << s << post;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:48:9: error: 'post' was not declared in this scope
   48 |         post += ')';
      |         ^~~~
a.cc:51:25: error: 'post' was not declared in this scope
   51 |     cout << pre << s << post;
      |                         ^~~~
Language: C++

n = int(input())
s = input()
head = ""
depth = 0
for i in s:
    if i == "(":
        depth += 1
    else:
        if depth == 0:
            head += "("
        else:
            depth -= 1
tail = "".join([")" for _ in range(depth)])
print(head + s + tail)
    

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

#include <iostream>
#include <string>
using namespace std;
int main(){
  int n,ln=0,rn=0;
  string ans, s,l,r;
  l="(", r=")";
  cin>>n;
  cin>>s;

  for(int i=0;i<s.length();i++){
    if(s[i]=="("){
      ln++;
    }else{
      rn++;
    }
  }

  ans=s;
  if(ln<rn){
    for(int i=0;i<ln-rn;i++){
      ans=l+ans;
    }
  }else if(rn>ln){
    for(int i=0;i<rn-ln;i++){
      ans=ans+r;
    }
  }

  cout<<ans<<endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:12: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   12 |     if(s[i]=="("){
Language: C++

#include <iostream>
#include <string>
using namespace std;
int main(){
  int n,ln=0,rn=0;
  string ans, s,l,r;
  l="(", r=")";
  cin>>n;
  cin>>s;

  for(int i=0;i<s.length();i++){
    if(s[i]=="(")ln++;
    else rn++;
  }

  ans=s;
  if(ln<rn){
    for(int i=0;i<ln-rn;i++){
      ans=l+ans;
    }
  }else if(rn>ln){
    for(int i=0;i<rn-ln;i++){
      ans=ans+r;
    }
  }

  cout<<ans<<endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:12: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   12 |     if(s[i]=="(")ln++;
Language: C++

#include<iostream>
#include<algorithm>
#include <string>
#include<cstdio>
#include<vector>
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n)  FOR(i,0,n)
using namespace std;
typedef long long ll;

int main()
{
	REP(i, 3) { cout << z[i] << endl; }
	string moji;
	int n; cin >> n;
	vector<int>a(10000);
	REP(i, 1000) { a[i] = 1; }
	REP(i, n) {
		char gomi;
		cin >> gomi; moji += gomi;
		if (gomi == '(') {
			a[i] = 1;
		}
		else {
			a[i] = 0;
		}
	}
	int sii = moji.size();
	while (1) {
		int c = 0;
		REP(i, n - 1) {

			if (a[i] == 1 && a[i + 1] == 0) {
				a.erase(a.begin() + i, a.begin() + i + 2);
				sii -= 2;
				c++;
				break;
			}
		}
		if (c == 0) {
			REP(i, sii) {
				int aa = a[i];
				if (aa) {
					moji = moji + ')';
				}
				else {
					moji = '(' + moji;
				}
			}
			break;
		}
	}
	cout << moji << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:29: error: 'z' was not declared in this scope
   13 |         REP(i, 3) { cout << z[i] << endl; }
      |                             ^
Language: C++

#include<iostream>
using namespace std;

int main(void){
	int N,a=0,b=0,c;
	string S;
	
	cin>>N>>S;
	
	for(int i=0;i<N;i++){
		if(S[i]=='('){
			a++;
		}
		else if(S[i]==')'){
			if(a>0)
				a=a-1;
			else
				b++;	
		}
	}
	if(a==0)
		cout<<S<<endl;
	else if(a<0){
		for(int i=0;i<a;i++){
			cout<<'(';
		}
		cout<<S<<endl;
	}
	else if(a>0){
		cout<<S<<endl;
		for(int i=0;i<b){
			cout<<')';
		}
		cout<<endl;
	}
}


Compiler output:
a.cc: In function 'int main()':
a.cc:31:32: error: expected ';' before ')' token
   31 |                 for(int i=0;i<b){
      |                                ^
      |                                ;
Language: C++

//problem-C
#include <algorithm>
#include <cmath>
#include <cstdlib>
#include <cstdio>
#include <iostream>
#include <vector>
#include<string>
#include<queue>
#include<map>

using namespace std;

int main() {
	int N;
	string S;
	cin >> N >> S;
	
	int putFirst = 0;
	int putLast = 0;
	int nowCount = 0;
	for (int i = 0; i < N; i++)
	{
		if (S[i] == '(') {
			nowCount++;
		}
		else {
			nowCount--;
			if (nowCount == -1) {
				nowCount = 0;
				putFirst++;
			}
		}
	}
	putLast = nowCount;

	for (int i = 0; i < putFirst; i++)
	{
		cout << '(';
	}
	cout << S;
	for (int i = 0; i < putLast; i++)
	{
		cout << ')'
	}
	cout << endl;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:44:28: error: expected ';' before '}' token
   44 |                 cout << ')'
      |                            ^
      |                            ;
   45 |         }
      |         ~
Language: C++

#include<iostream>
#include<vector>
#include<algorithm>
 
using namespace std;
 
int n;
char cs[105];
vector<int> parens;
int inserts[100];// 場所
int insert;
int depth;
int main() {
	scanf("%d",&n);
	scanf("%s",cs);
	for(int i=0;i<n;i++){
		if(cs[i]=='(')depth++;
		else depth--;
		if(depth<0){
			insert++;
			depth++;
		}
	}
	while(insert--)printf("(");
	for(int i=0;i<n;i++){
		printf("%c",cs[i]);
	}
	while(depth--)printf(")");
	printf("\n");
	return 0;

Compiler output:
a.cc: In function 'int main()':
a.cc:30:18: error: expected '}' at end of input
   30 |         return 0;
      |                  ^
a.cc:13:12: note: to match this '{'
   13 | int main() {
      |            ^
Language: C++

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

int main()
{
	char s[100], f[100], l[100];
	memset(s, '\0', 100);
	memset(f, '\0', 100);
	memset(l, '\0', 100);
	int cnt = 0, i = 0;
	int fi = 0, li = 0;
	cin >> cnt;
	for(; i != cnt; i++){
		cin >> s[i];
	}
	i = 0;
	int flag = 0;
	while (s[i] != '\0') {
		if (s[i] == ')') {
			if (flag != 0) {
				li--;
				flag--;
			}
			else {
				fi++;
			}
		}
		else {
			li++;
			flag++;
		}
		i++;
	}
	for (int c = 0; c < fi; c++) {
		f[c] = '(';
	}
	for (int c = 0; c < li; c++) {
		l[c] = ')';
	}
	strcat_s(f, s);
	strcat_s(f, l);
	cout << f << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:41:9: error: 'strcat_s' was not declared in this scope; did you mean 'strcat'?
   41 |         strcat_s(f, s);
      |         ^~~~~~~~
      |         strcat
Language: Java

import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    String s = sc.next();
    int first = 0;
    int last = 0;
    if(s.charAt(0) == ')') first = 1;
    if(s.charAt(s.length() - 1) == '(') l = 1;
    int plus = 0;
    int minus = 0;
    int lastP = 0;
    int firstM = 0;
    for(int i = 0; i < s.length(); i++) {
      if(s.charAt(i) == '(') {
        plus++;
      } else {
        minus++;
      }
    }
    if(first == 1) {
      for(int i = 0; i < s.length(); i++) {
        if(s.charAt(i) == ')') {
          firstM++;
        } else {
          break;
        }
      }
    }
    if(l == 1) {
      for(int i = s.length() - 1; i >= 0; i--) {
        if(s.charAt(i) == '(') {
          lastP++;
        } else {
          break;
        }
      }
    }
    String firstP = "";
    String lastM = "";
    for(int i = 0; i < firstM; i++) {
      firstP += "(";
    }
    for(int i = 0; i < lastP; i++) {
      lastM += ")";
    }
    String ans = firstP + s + lastM;
    int p = plus - lastP;
    int m = minus - firstM;
    if(p > m) {
      String a = "";
      for(int i = 0; i < (p - m); i++) {
        a += ")";
      }
      ans = ans + a;
    }
    if(p < m) {
      String a = "";
      for(int i = 0; i < (m - p); i++) {
        a += "(";
      }
      ans = a + ans;
    }
    System.out.println(ans);
  }
}

Compiler output:
Main.java:11: error: cannot find symbol
    if(s.charAt(s.length() - 1) == '(') l = 1;
                                        ^
  symbol:   variable l
  location: class Main
Main.java:32: error: cannot find symbol
    if(l == 1) {
       ^
  symbol:   variable l
  location: class Main
2 errors