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

#include<stdio.h>
#include<cstring>
int main(){
	int sign[50]={0};
	int flag=0;
	char a[111];
	scanf("%s", a); 
	for(int i=1;i<=strlen(a);i++){
		sign[a[i]-'a']++;
	}
	for(int j=1;j<=strlen(a);j++){
		if(sign[j]%2!=0){
			flag=1;
			break;
		}
	} 
	if(flag==0)
		printf("Yes");
	else
		printf("No");
	return 0;
}

Compiler output:
main.c:2:9: fatal error: cstring: No such file or directory
    2 | #include<cstring>
      |         ^~~~~~~~~
compilation terminated.
Language: C++

#include<stdio.h>
#include<cstring>
#include<cmath>
int main(){
	int sign[30]={0},flag;
	char a[101];
	gets(a);
	for(int i=1;i<=strlen(a);i++){
		sign[a[i]-'a']++;
	}
	for(int j=1;j<=strlen(a);j++){
		if(sign[j]%2!=0){
			flag=1;
		}
	} 
	if(flag!=1)
		printf("Yes");
	else
		printf("No");
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: 'gets' was not declared in this scope; did you mean 'getw'?
    7 |         gets(a);
      |         ^~~~
      |         getw
Language: C++

#include<stdio.h>
#include<cstring>
int main(){
	int sign[30]={0},flag;
	char a[101];
	gets(a);
	for(int i=1;i<=strlen(a);i++){
		sign[a[i]-'a']++;
	}
	for(int j=1;j<=strlen(a);j++){
		if(sign[j]%2!=0){
			flag=1;
		}
	} 
	if(flag!=1)
		printf("Yes");
	else
		printf("No");
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'gets' was not declared in this scope; did you mean 'getw'?
    6 |         gets(a);
      |         ^~~~
      |         getw
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define REP(i, n) for(int i = 0; i < n; i++)
int main(){ 
    string s;
    cin>>s;
    sort(s.begin(),s.end());
    for(i=0;i<s.size()-1;i+=2){
        if(s[i]!=s[i+1]){
            cout<<"No";
            return 0;
        }
    }
    cout<<"Yes";
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: 'i' was not declared in this scope
    8 |     for(i=0;i<s.size()-1;i+=2){
      |         ^
Language: C++

#include <iostream>
#include <cstring>

using namespace std;

int main()
{
	string s;
  cin >> s;
  
  int hash[27] = { 0 };
  
  for (int i = 0; i < s.length(); i++)
  {
	hash[s[i] - 'a']++;
  }
  bool valid = true;
  for (int i = 0; i < 27; i++)
  {
	if (hash[i] % 2 != 0) valid = false
  }
  if (valid) cout << "Yes" << endl;
  else cout << "No" << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:44: error: expected ';' before '}' token
   20 |         if (hash[i] % 2 != 0) valid = false
      |                                            ^
      |                                            ;
   21 |   }
      |   ~
Language: C++

#include <iostream>
#include <cstring>

using namespace std;

int main()
{
	string s;
  cin >> s;
  
  int hash[27] = 0;
  
  for (int i = 0; i < s.length(); i++)
  {
	hash[s[i] - 'a']++;
  }
  bool valid = true;
  for (int i = 0; i < 27; i++)
  {
	if (hash[i] % 2 != 0) valid = false
  }
  if (valid) cout << "Yes" << endl;
  else cout << "No" << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:18: error: array must be initialized with a brace-enclosed initializer
   11 |   int hash[27] = 0;
      |                  ^
a.cc:20:44: error: expected ';' before '}' token
   20 |         if (hash[i] % 2 != 0) valid = false
      |                                            ^
      |                                            ;
   21 |   }
      |   ~
Language: C++

#include <iostream>
#include <cstring>

using namespace std;

int main()
{
	string s;
  cin >> s;
  
  for (int i = 0; i < s.length(); i++)
  {
	hash[s[i] - 'a']++;
  }
  bool valid = true;
  for (int i = 0; i < 27; i++)
  {
	if (hash[i] % 2 != 0) valid = false
  }
  if (valid) cout << "Yes" << endl;
  else cout << "No" << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:15: error: expected ']' before '[' token
   13 |         hash[s[i] - 'a']++;
      |               ^
      |               ]
a.cc:13:25: error: expected initializer before '++' token
   13 |         hash[s[i] - 'a']++;
      |                         ^~
a.cc:13:25: error: expected ';' before '++' token
a.cc:18:17: error: expected unqualified-id before '[' token
   18 |         if (hash[i] % 2 != 0) valid = false
      |                 ^
a.cc:18:44: error: expected ';' before '}' token
   18 |         if (hash[i] % 2 != 0) valid = false
      |                                            ^
      |                                            ;
   19 |   }
      |   ~
Language: C++

#include<bits/stdc++.h>
using namespace std;
const int mod = 1000000007;
#define rep(i, n) for(int i = 0; i < (n); i++)

int int_len(int n) {
  int s=0;
  while(n!=0) s++, n/=10;
  return s;
}

int int_sum(int n) {
  int m=0,s=0,a=n;
  while(a!=0) s++, a/=10;
  for(int i=s-1;i>=0;i--) m+=n/((int)pow(10,i))-(n/((int)pow(10,i+1)))*10;
  return m;
}






int gcd(int a,int b)
{
 
  int r, tmp;
 
  
 
  /* 自然数 a > b を確認・入替 */
  if(a<b){
    tmp = a;
    a = b;
    b = tmp;
  }
 
  /* ユークリッドの互除法 */
  r = a % b;
  while(r!=0){
    a = b;
    b = r;
    r = a % b;
  }
 
 
 
  return b;
}







int fac(int n){
  int m=1;
  while(n>=1) m*=n,n--;
  return m;
}

int vec_sum(vector<int> v){
  int n=0;
  for(int i=0;i<v.size();i++) n+=v[i];
  return n;
}
///////////////////////////
int main() {
  string s;
  cin>>s;
  bool flag=true;
  map<char,int> mp;
  rep(i,s.size()) mp[s[i]]++;
  rep(auto a:mp){
    if(a.second%2!=0){
      flag=false;
      break;
    }
  }
  if(flag){
    cout<<"Yes"<<endl;
  }else{
    cout<<"No"<<endl;
  }
  
  
}
///////////////////////////



Compiler output:
a.cc:75:16: error: macro "rep" requires 2 arguments, but only 1 given
   75 |   rep(auto a:mp){
      |                ^
a.cc:4:9: note: macro "rep" defined here
    4 | #define rep(i, n) for(int i = 0; i < (n); i++)
      |         ^~~
a.cc: In function 'int main()':
a.cc:75:3: error: 'rep' was not declared in this scope
   75 |   rep(auto a:mp){
      |   ^~~
Language: C++

#include <iostream>
#include <vector>

using namespace std;

int main(){
  string s;
  cin >> s;
  
  vector<int> a(100,0);
  for(int i = 0; i < s.size(); i++){
    a[s[i] - 'a']++;
  }
  bool is_ugly = false;
  for(int i = 0; i < a.size(); i++){
    if(a % 2 == 1){
      is_ugly = true;
      break;
    }
  }
  if(is_ugly) cout << "Yes";
  else cout << "No";
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:10: error: no match for 'operator%' (operand types are 'std::vector<int>' and 'int')
   16 |     if(a % 2 == 1){
      |        ~ ^ ~
      |        |   |
      |        |   int
      |        std::vector<int>
Language: Java

import java.util.*;

class Main{
  static int ugly = 0;
  Scanner sc = new Scanner(System.in);
  String nyuuryoku = sc.next();
  String w = nyuuryoku;
  static int wlen = w.length();

  String wafter;
  int wlenafter;
  public static void judge(String okikaeruyatu){
    wafter = w.replace(okikaeruyatu,"");
    wlenafter = wafter.length();
    if((wlen - wlenafter) % 2 == 1){
      ugly += 1;
    }
  }
  public static void main(String[] args){


    judge("a");judge("b");judge("c");
    judge("d");judge("e");judge("f");
    judge("g");judge("h");judge("i");
    judge("j");judge("k");judge("l");
    judge("m");judge("n");judge("o");
    judge("p");judge("q");judge("r");
    judge("s");judge("t");judge("u");
    judge("v");judge("w");judge("x");
    judge("y");judge("z");
    if(ugly == 0){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    }
  }
}


Compiler output:
Main.java:8: error: non-static variable w cannot be referenced from a static context
  static int wlen = w.length();
                    ^
Main.java:13: error: non-static variable wafter cannot be referenced from a static context
    wafter = w.replace(okikaeruyatu,"");
    ^
Main.java:13: error: non-static variable w cannot be referenced from a static context
    wafter = w.replace(okikaeruyatu,"");
             ^
Main.java:14: error: non-static variable wlenafter cannot be referenced from a static context
    wlenafter = wafter.length();
    ^
Main.java:14: error: non-static variable wafter cannot be referenced from a static context
    wlenafter = wafter.length();
                ^
Main.java:15: error: non-static variable wlenafter cannot be referenced from a static context
    if((wlen - wlenafter) % 2 == 1){
               ^
6 errors
Language: Java

import java.util.*;

class Main{
  public static void judge(String okikaeruyatu){
    wafter = w.replace(okikaeruyatu,"");
    wlenafter = wafter.length();
    if((wlen - wlenafter) % 2 == 1){
      ugly += 1;
    }
  }
  public static void main(String[] args){
    int ugly = 0;
    Scanner sc = new Scanner(System.in);
    String w = sc.next();
    int wlen = w.length();

    String wafter;
    int wlenafter;

    judge("a");judge("b");judge("c");
    judge("d");judge("e");judge("f");
    judge("g");judge("h");judge("i");
    judge("j");judge("k");judge("l");
    judge("m");judge("n");judge("o");
    judge("p");judge("q");judge("r");
    judge("s");judge("t");judge("u");
    judge("v");judge("w");judge("x");
    judge("y");judge("z");
    if(ugly == 0){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    }
  }
}


Compiler output:
Main.java:5: error: cannot find symbol
    wafter = w.replace(okikaeruyatu,"");
    ^
  symbol:   variable wafter
  location: class Main
Main.java:5: error: cannot find symbol
    wafter = w.replace(okikaeruyatu,"");
             ^
  symbol:   variable w
  location: class Main
Main.java:6: error: cannot find symbol
    wlenafter = wafter.length();
    ^
  symbol:   variable wlenafter
  location: class Main
Main.java:6: error: cannot find symbol
    wlenafter = wafter.length();
                ^
  symbol:   variable wafter
  location: class Main
Main.java:7: error: cannot find symbol
    if((wlen - wlenafter) % 2 == 1){
        ^
  symbol:   variable wlen
  location: class Main
Main.java:7: error: cannot find symbol
    if((wlen - wlenafter) % 2 == 1){
               ^
  symbol:   variable wlenafter
  location: class Main
Main.java:8: error: cannot find symbol
      ugly += 1;
      ^
  symbol:   variable ugly
  location: class Main
7 errors
Language: Java

import java.util.*;

class Main{
  public static void judge(String okikaeruyatu){
    wafter = w.replace(okikaeruyatu,"");
    wlenafter = wafter.length();
    if((wlen - wlenafter) % 2 == 1){
      ugly += 1;
    }
  }
  public static void main(String[] args){
    int ugly = 0;
    Scanner sc = new Scanner(System.in);
    String w = sc.next();
    int wlen = w.length();

    String wafter;
    int wlenafter;

    judge("a");
    judge("b");
    judge("c");
    judge("d");
    judge("e");
    judge("f");
    judge("g");
    judge("h");
    judge("i");
    judge("j");
    judge("k");
    judge("l");
    judge("m");
    judge("n");
    judge("o");
    judge("p");
    judge("q");
    judge("r");
    judge("s");
    judge("t");
    judge("u");
    judge("v");
    judge("w");
    judge("x");
    judge("y");
    judge("z");
    if(ugly == 0){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    }
  }

Compiler output:
Main.java:51: error: reached end of file while parsing
  }
   ^
1 error
Language: C++

#include<iostream>
#include<vector>
#include<algorithm>
#include<string>
using namespace std;
int main(){
   string w;
   cin >> w;
   int s = 0;
   sort(w.begin(), w.end());
   if(w.size()==1){
       cout << "No"  << endl;
       break;
   }
   for(int i = 1; i < w.size(); i++){
       if(w[i-1]==w[i]){
           s++;
       }
       else{
           if(s % 2 == 0){
               cout << "No" <<  endl;
               break;
           }
           else{
               s = 0;
           }
       }
       if(i == w.size()-1){
            cout << "Yes" << endl;
       }
   }

}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:8: error: break statement not within loop or switch
   13 |        break;
      |        ^~~~~
Language: C++

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

int num(char x)
{
  return (x-'a');
}

int main()
{
	int a[26];
  for(int i=0;i<26;i++)
  {
    a[i]=0;
  }
  int s;
  cin>>s;
  for(int i=0;i<s.size();i++)
  {
    a[num(s[i])]++;
  }
  for(int i=0;i<26;i++)
  {
    if(a[i]%2!=0)
    {
      cout<<"NO";
      return 0;
    }
  }
  cout<<"YES";
    
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:19: error: request for member 'size' in 's', which is of non-class type 'int'
   18 |   for(int i=0;i<s.size();i++)
      |                   ^~~~
a.cc:20:12: error: invalid types 'int[int]' for array subscript
   20 |     a[num(s[i])]++;
      |            ^
Language: C++

#include <bits/stdc++.h>
 
typedef unsigned long long int ull;
typedef long double ldb;
typedef long long int ll;
 
#define for01(k,n)  for (ll i=k; i<n; i++)
#define for02(k,n)  for (ll j=k; j<n; j++)
#define for03(k,n)  for (ll k=k; k<n; k++)
#define for11(k,n)  for (ll i=k; i<=n; i++)
#define for12(k,n)  for (ll j=k; j<=n; j++)
#define for13(k,n)  for (ll k=k; k<=n; k++)

#define pb push_back
#define mp make_pair
#define vll vector<ll>
#define F first
#define S second
#define pp pair <ll, ll>
#define lb lower_bound
#define ub upper_bound
#define emp empty()
#define beg begin()
#define en end()
#define si size()
#define bk back()
#define deci(n)  fixed<<setprecision(n)

#define p0(a) cout << a << " "
#define p1(a) cout << a << "\n"


#define MAX LLONG_MAX

#define MIN LLONG_MIN

using namespace std;

int main()
{
   char alph[30];
    for(int i = 0; i < 30; i++) 
      alph[i] = 0;
    int len = w.length();
    for(int i = 0; i < len; i++)
    {
        alph[w[i]-'a']++;
    }
    for(int i = 0; i < 30; i++)
    {
        if(alph[i] % 2 != 0) 
        {
          p1("No");
          return 0;
        }
    }
    p1("Yes");
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:44:15: error: 'w' was not declared in this scope
   44 |     int len = w.length();
      |               ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main()
{
    string str;
    cin>>str;
    for(char i='a';i<='z';i++)
    {
        int c=0;
        for(int j=0;j<str.size();j++)
        {
            if(str.at(j)==i)
            {
                c++;
            }
        }
    }
    if((c%2!=0)?cout<<"No":cout<<"Yes");
    return 0;

}


Compiler output:
a.cc: In function 'int main()':
a.cc:18:9: error: 'c' was not declared in this scope
   18 |     if((c%2!=0)?cout<<"No":cout<<"Yes");
      |         ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
const int mod = 1000000007;
#define ll long long
#define rep(i,n) for(int i=0 ; (n) >i; i++)

class Solution {
public:
    int main() {
        string str; cin >> str;
        std::vector<int> v(26);
        rep(i,str.size()){
            int x = str[i] - 'a';
            v[x]++;
        }

        for(int a: v){
            if(a&1){
                cout << "NO" << endl;
                return 0;
            }
        }

        cout <<"YES" << endl;

        return 0;
    }
};

Compiler output:
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

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

int main() {
	string w; cin >> w;

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

	if (w.length() % 2 == 1) {
		cout << "No" << endl;
		return 0;
	{

	for (int i = 0; i < w.length(); ++i) {
		if (w[i * 2] != w[i * 2 + 1]) {
			cout << "No" << endl;
			return 0;
		}
	}
	cout << "Yes" << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:2: error: expected '}' at end of input
   22 | }
      |  ^
a.cc:10:34: note: to match this '{'
   10 |         if (w.length() % 2 == 1) {
      |                                  ^
a.cc:22:2: error: expected '}' at end of input
   22 | }
      |  ^
a.cc:5:12: note: to match this '{'
    5 | int main() {
      |            ^
Language: C++

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

int main() {
	string w; cin >> w;

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

	for (int i = 0; i < w.length; ++i) {
		if (w[i] != w[i + 1]) {
			cout << "No" << endl;
			return 0;
		}
	}
	cout << "Yes" << endl;
}

Compiler output:
a.cc:1:10: fatal error: bits/stdc++: No such file or directory
    1 | #include <bits/stdc++>
      |          ^~~~~~~~~~~~~
compilation terminated.
Language: C++

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

int main() {
	string w; cin >> w;

	sort(w.begin(),w.end())

	for (int i = 0; i < w.length; ++i) {
		if (w[i] != w[i + 1]) {
			cout << "No" << endl;
			return 0;
		}
	}
	cout << "Yes" << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:32: error: expected ';' before 'for'
    8 |         sort(w.begin(),w.end())
      |                                ^
      |                                ;
    9 | 
   10 |         for (int i = 0; i < w.length; ++i) {
      |         ~~~                     
a.cc:10:25: error: 'i' was not declared in this scope
   10 |         for (int i = 0; i < w.length; ++i) {
      |                         ^
Language: C++

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

int main(){
  stirng s;
  int mp[300] = {};
  cin >> s;
  
  for(int i = 0;i < s.size();i++){
    mp[s[i]]++;
  }
  
  for(int i = 'a';i <= 'z';i++){
    if(mp[i]%2 == 1){
      cout << "No" << endl;
      return 0;
    }
  }
  
  cout << "Yes" << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'stirng' was not declared in this scope
    5 |   stirng s;
      |   ^~~~~~
a.cc:7:10: error: 's' was not declared in this scope
    7 |   cin >> s;
      |          ^
Language: Java

import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);

		// 文字列の入力
        List<String> sList = Arrays.asList(sc.next().split(""));
        Collections.sort(sList);
        int count = 0;
        String lastChar = "";
        String ans = "Yes";
        for(String chara : sList) {
          if (!chara.equals(lastChar)) {
            if (count % 2 == 0) {
              count == 0;
            } else {
              ans = "No";
              break;
            }
          }
          lastChar = chara;
          count++;
        }
       
		// 出力
		System.out.println(ans);
	}
}

Compiler output:
Main.java:15: error: not a statement
              count == 0;
                    ^
1 error
Language: C++

#include<bits/stdc++.h>
using namespace std;
string s="";
int main(){
    cin>>s;
    bool flag=false;
    map <char, int>mp;
    for(int i=0;i<int(s.size())-1;i++){
        mp[s[i]]++;
    }
    for(auto it=mp.begin();it!=mp.end();++it){if(it->second%2==1){flag=true;break}}
    cout<<(flag?"No":"Yes")<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:82: error: expected ';' before '}' token
   11 |     for(auto it=mp.begin();it!=mp.end();++it){if(it->second%2==1){flag=true;break}}
      |                                                                                  ^
      |                                                                                  ;
Language: C++

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

int main() {
	string w; cin >> w;
	sort(w.begin(), w.end());

	for (int i = 0; i < w.length() / 2; ++i) {
		if (w[i * 2 - 1] = l w[i * 2]) cout << "No" << endl; return 0;
	}
	cout << "Yes" << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:36: error: 'l' was not declared in this scope
   12 |                 if (w[i * 2 - 1] = l w[i * 2]) cout << "No" << endl; return 0;
      |                                    ^
a.cc:12:37: error: expected ')' before 'w'
   12 |                 if (w[i * 2 - 1] = l w[i * 2]) cout << "No" << endl; return 0;
      |                    ~                ^~
      |                                     )
Language: C++

#include <string>
using namespace std;
 
int main(){
  string w;
  cin >> w;
  int L=w.size()-1;
  sort(w.begin(),w.end());
  int num=0;
  int ans=0;
  for(int i=0; i<L; i++){
    if(w.at(i)==w.at(i+1)){
      num++;
    }
    else{
      if(num%2==0) ans++;
      num=0;
    }
  }
  if(ans>0) cout << "No" << endl;
  else cout << "Yes" << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope
    6 |   cin >> w;
      |   ^~~
a.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    1 | #include <string>
  +++ |+#include <iostream>
    2 | using namespace std;
a.cc:8:3: error: 'sort' was not declared in this scope; did you mean 'short'?
    8 |   sort(w.begin(),w.end());
      |   ^~~~
      |   short
a.cc:20:13: error: 'cout' was not declared in this scope
   20 |   if(ans>0) cout << "No" << endl;
      |             ^~~~
a.cc:20:13: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:20:29: error: 'endl' was not declared in this scope
   20 |   if(ans>0) cout << "No" << endl;
      |                             ^~~~
a.cc:2:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
    1 | #include <string>
  +++ |+#include <ostream>
    2 | using namespace std;
a.cc:21:8: error: 'cout' was not declared in this scope
   21 |   else cout << "Yes" << endl;
      |        ^~~~
a.cc:21:8: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:21:25: error: 'endl' was not declared in this scope
   21 |   else cout << "Yes" << endl;
      |                         ^~~~
a.cc:21:25: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
Language: C++

#include<bits/stdc++.h>
#include<string>
#include<set>
#include<iterator>
using namespace std;
int freq(set<char>::iterator it; ptr,string s)
{
  int ans=0;
  for(int i=0;i<s.length();i++)
  {
    if(*it == s[i])
      ans++;
  }
  return ans;
}
int main()
{
  string s;
  cin >> s;int f;int cnt=0;
  set<char> k;set<char>::iterator it = k.begin();
  for(int i=0;i<s.length();i++)
    k.insert(s[i]);
  for( it=k.begin();it =k.end();it++)
  {
      f = freq(it,s);.
    if(!(f&1))
      cnt=cnt+f;
  }
  if(cnt == s.length())
    cout<<"YES"<<endl;
  else
    cout<<"NO"<<endl;
      
  return 0;
}
  

Compiler output:
a.cc:6:32: error: expected ')' before ';' token
    6 | int freq(set<char>::iterator it; ptr,string s)
      |         ~                      ^
      |                                )
a.cc:6:34: error: 'ptr' does not name a type
    6 | int freq(set<char>::iterator it; ptr,string s)
      |                                  ^~~
a.cc: In function 'int main()':
a.cc:23:24: error: could not convert '(it = k.std::set<char>::end())' from 'std::set<char>::iterator' {aka 'std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>, std::allocator<char> >::const_iterator'} to 'bool'
   23 |   for( it=k.begin();it =k.end();it++)
      |                     ~~~^~~~~~~~
      |                        |
      |                        std::set<char>::iterator {aka std::_Rb_tree<char, char, std::_Identity<char>, std::less<char>, std::allocator<char> >::const_iterator}
a.cc:25:15: error: too many arguments to function 'int freq(std::set<char>::iterator)'
   25 |       f = freq(it,s);.
      |           ~~~~^~~~~~
a.cc:6:5: note: declared here
    6 | int freq(set<char>::iterator it; ptr,string s)
      |     ^~~~
a.cc:25:22: error: expected primary-expression before '.' token
   25 |       f = freq(it,s);.
      |                      ^
a.cc:26:5: error: expected unqualified-id before 'if'
   26 |     if(!(f&1))
      |     ^~
Language: C++

#include<bits/stdc++.h>
#include<string>
#include<set>
using namespace std;
int freq(char* ptr,string s)
{
  int ans;
  for(int i=0;i<s.length();i++)
  {
    if(*ptr == s[i])
      ans++;
  }
  return ans;
}
int main()
{
  string s;
  cin >> s;int f;int cnt=0;
  set<char> k;
  for(int i=0;i<s.length();i++)
    k.insert(s[i]);
  for(auto it=k.begin();it =k.end();it++)
  {
      f = freq(&it,s);.
    if(!(f&1))
      cnt=cnt+f;
  }
  if(cnt == s.length())
    cout<<"YES"<<endl;
  else
    cout<<"NO"<<endl;
      
  return 0;
}
  

Compiler output:
a.cc: In function 'int main()':
a.cc:22:28: error: could not convert '(it = k.std::set<char>::end())' from 'std::_Rb_tree_const_iterator<char>' to 'bool'
   22 |   for(auto it=k.begin();it =k.end();it++)
      |                         ~~~^~~~~~~~
      |                            |
      |                            std::_Rb_tree_const_iterator<char>
a.cc:24:16: error: cannot convert 'std::_Rb_tree_const_iterator<char>*' to 'char*'
   24 |       f = freq(&it,s);.
      |                ^~~
      |                |
      |                std::_Rb_tree_const_iterator<char>*
a.cc:5:16: note:   initializing argument 1 of 'int freq(char*, std::string)'
    5 | int freq(char* ptr,string s)
      |          ~~~~~~^~~
a.cc:24:23: error: expected primary-expression before '.' token
   24 |       f = freq(&it,s);.
      |                       ^
a.cc:25:5: error: expected unqualified-id before 'if'
   25 |     if(!(f&1))
      |     ^~
Language: C++

#include<bits/stdc++.h>
#include<string>
#include<set>
using namespace std;
int freq(char* ptr,string s)
{
  int ans;
  for(int i=0;i<s.length();i++)
  {
    if(*ptr == s[i])
      ans++;
  }
  return ans;
}
int main()
{
  string s;
  cin >> s;int f;int cnt=0;
  set<char> k;
  for(int i=0;i<s.length();i++)
    k.insert(s[i]);
  for(auto it=k.begin();it =k.end();it++)
  {
      f = freq(*it,s);
    if(!(f&1))
      cnt=cnt+f;
  }
  if(cnt == s.length())
    cout<<"YES"<<endl;
  else
    cout<<"NO"<<endl;
      
  return 0;
}
  

Compiler output:
a.cc: In function 'int main()':
a.cc:22:28: error: could not convert '(it = k.std::set<char>::end())' from 'std::_Rb_tree_const_iterator<char>' to 'bool'
   22 |   for(auto it=k.begin();it =k.end();it++)
      |                         ~~~^~~~~~~~
      |                            |
      |                            std::_Rb_tree_const_iterator<char>
a.cc:24:16: error: invalid conversion from 'char' to 'char*' [-fpermissive]
   24 |       f = freq(*it,s);
      |                ^~~
      |                |
      |                char
a.cc:5:16: note:   initializing argument 1 of 'int freq(char*, std::string)'
    5 | int freq(char* ptr,string s)
      |          ~~~~~~^~~
Language: C++

#include<bits/stdc++.h>
#include<string>
#include<set>
using namespace std;
int freq(*ptr,string s)
{
  int ans;
  for(int i=0;i<s.length();i++)
  {
    if(*ptr == s[i])
      ans++;
  }
  return ans;
}
int main()
{
  string s;
  cin >> s;int f;int cnt=0;
  set<char> k;
  for(int i=0;i<s.length();i++)
    k.insert(s[i]);
  for(auto it=k.begin();it =k.end();it++)
  {
      f = freq(*it,s);
    if(!(f&1))
      cnt=cnt+f;
  }
  if(cnt == s.length())
    cout<<"YES"<<endl;
  else
    cout<<"NO"<<endl;
      
  return 0;
}
  

Compiler output:
a.cc:5:11: error: 'ptr' was not declared in this scope
    5 | int freq(*ptr,string s)
      |           ^~~
a.cc:5:22: error: expected primary-expression before 's'
    5 | int freq(*ptr,string s)
      |                      ^
a.cc:5:23: error: expression list treated as compound expression in initializer [-fpermissive]
    5 | int freq(*ptr,string s)
      |                       ^
a.cc: In function 'int main()':
a.cc:22:28: error: could not convert '(it = k.std::set<char>::end())' from 'std::_Rb_tree_const_iterator<char>' to 'bool'
   22 |   for(auto it=k.begin();it =k.end();it++)
      |                         ~~~^~~~~~~~
      |                            |
      |                            std::_Rb_tree_const_iterator<char>
a.cc:24:15: error: 'freq' cannot be used as a function
   24 |       f = freq(*it,s);
      |           ~~~~^~~~~~~
Language: C++

#include<bits/stdc++.h>
#include<string>
#include<set>
using namespace std;
int main()
{
  string s;
  cin >> s;int f;int cnt=0;
  set<char> k;
  for(int i=0;i<s.length();i++)
    k.insert(s[i]);
  for(auto it=k.begin();it =k.end();it++)
  {
      f = freq(*it,s);
    if(!(f&1))
      cnt=cnt+f;
  }
  if(cnt == s.length())
    cout<<"YES"<<endl;
  else
    cout<<"NO"<<endl;
      
  return 0;
}
  

Compiler output:
a.cc: In function 'int main()':
a.cc:12:28: error: could not convert '(it = k.std::set<char>::end())' from 'std::_Rb_tree_const_iterator<char>' to 'bool'
   12 |   for(auto it=k.begin();it =k.end();it++)
      |                         ~~~^~~~~~~~
      |                            |
      |                            std::_Rb_tree_const_iterator<char>
a.cc:14:11: error: 'freq' was not declared in this scope; did you mean 'free'?
   14 |       f = freq(*it,s);
      |           ^~~~
      |           free
Language: C++

#include<bits/stdc++.h>
#include<string>
#include<set>
using namespace std;
int main()
{
  string s;
  cin >> s;int freq;int cnt=0;
  set<char> k;
  for(int i=0;i<s.length();i++)
    k.insert(s[i]);
  for(auto it=k.begin();it =k.end();it++)
  {
      f = freq(*it,s);
    if(!(f&1))
      cnt=cnt+f;
  }
  if(cnt == s.length())
    cout<<"YES"<<endl;
  else
    cout<<"NO"<<endl;
      
  return 0;
}
  

Compiler output:
a.cc: In function 'int main()':
a.cc:12:28: error: could not convert '(it = k.std::set<char>::end())' from 'std::_Rb_tree_const_iterator<char>' to 'bool'
   12 |   for(auto it=k.begin();it =k.end();it++)
      |                         ~~~^~~~~~~~
      |                            |
      |                            std::_Rb_tree_const_iterator<char>
a.cc:14:7: error: 'f' was not declared in this scope
   14 |       f = freq(*it,s);
      |       ^
a.cc:14:15: error: 'freq' cannot be used as a function
   14 |       f = freq(*it,s);
      |           ~~~~^~~~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
 
int main(){
  string s;
  cin >> s;
  bool beautiful = true;
  for(int i = 0; i < s.size(); i++){
    int cnt = 0;
    for(int j = 0; j < s.size(); j++){
      if(s.at(i) == s.at(j)) cnt++;
    }
    if(cnt % 2 == 1){
      beautiful = false;
      break;
    }
  }
  if(beautiful) cout << "Yes" << endl;
  else cout << "No" << endl;
  return 0;


Compiler output:
a.cc: In function 'int main()':
a.cc:20:12: error: expected '}' at end of input
   20 |   return 0;
      |            ^
a.cc:4:11: note: to match this '{'
    4 | int main(){
      |           ^
Language: C++

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

string w;
int count = 0; ans = 1;

int main () {
  cin >> w;
  
  if (w.size % 2 == 1)
    cout << "No" << endl;
  
  sort(w.begin(), w.end());
  for(int i = 0; i < (w.size / 2); i++){
    if(w[2*i] != w[2*i + 1]){
      cout << "No" <<endl;
      return 0;
    }
  }
  cout << "Yes" << endl;
  return 0;
}

Compiler output:
a.cc:5:16: error: 'ans' does not name a type
    5 | int count = 0; ans = 1;
      |                ^~~
a.cc: In function 'int main()':
a.cc:10:9: error: invalid use of member function 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]' (did you forget the '()' ?)
   10 |   if (w.size % 2 == 1)
      |       ~~^~~~
      |             ()
a.cc:14:25: error: invalid use of member function 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]' (did you forget the '()' ?)
   14 |   for(int i = 0; i < (w.size / 2); i++){
      |                       ~~^~~~
      |                             ()
Language: Java

import java.util.*;
class Main {
	public static void main(String args[]) {
		Scanner sc = new Scanner(System.in);
		String W = sc.next();
		int count = 0;
		for(char i = 'a'; i <='z'; i++) {
			for(int x = 0; x < W.length(); x++) {
				if(W.charAt(x) == i) {
					count += 1;
				}
			}
          if(count % 2 != 0){
            System.out.println("No");
            return;
		}
		System.out.println("Yes");
	}
}

Compiler output:
Main.java:19: error: reached end of file while parsing
}
 ^
1 error
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
    string s,ans;
    cin >> s;
    int n=s.size();
    sort(s.begin(),s.end());
    int count;
    count=1;
    for(int i=0;i<n-1;i++){
      if(s[i]==s[i+1]){
        count++;
      }else{
        if(count%2==1){
          ans="No";
          break;
        }else{
          count=1;
          ans="Yes";
        }
      }
   cout<<ans<<endl;     
}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:2: error: expected '}' at end of input
   24 | }
      |  ^
a.cc:4:12: note: to match this '{'
    4 | int main() {
      |            ^
Language: C++

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

int mid(int a,int b,int c){
  return a+b+c-max(max(a,b),c)-min(min(a,b),c);
}//三つの要素の中央値を出力
int samecount(string S){
    int A = 0;
    for(int i = 0;i < S.size();i++){
        int QA = 1;
        for(int j = i ;j < S.size() - 1;j++){
           if(S.at(j) == S.at(j + 1)){
               QA++ ;
           }
           if(S.at(j) != S.at(j + 1)){
               break;
           }
           
        }
        A = max(QA,A);
    }
    return A;
}//文字列の中の連続する同じ要素の最大値を出力
int main(){
    string W;
    cin >> W;
    string A = "abcdefghijklmnopqrstuvwxyz" ;
    bool B = 1;
    if(int i = 0;i < 27;i++){
        int a = count(W.begin(),W.end(),'W[i]');
        if(a % 2 == 1){
            B = 0;
        }
    }
    if(B) cout << "Yes" << endl;
    else cout << "No" << endl;
}


Compiler output:
a.cc:32:41: warning: multi-character character constant [-Wmultichar]
   32 |         int a = count(W.begin(),W.end(),'W[i]');
      |                                         ^~~~~~
a.cc: In function 'int main()':
a.cc:31:24: error: expected ')' before ';' token
   31 |     if(int i = 0;i < 27;i++){
      |       ~                ^
      |                        )
a.cc:31:25: error: 'i' was not declared in this scope
   31 |     if(int i = 0;i < 27;i++){
      |                         ^
Language: C++

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

int main() {
  string  w;
  cin >> w;
 
  int s[30] ;
  for (int i = 0; i < 30; i++){
    s[i] = 0;
  }
   
  int count, str, 
      for (int i = 0; i < w.size() ; i++) {
      
        s[w[i]-'a']++;
        
      }
  for (int i = 0; i < 30; i++){
    
       if (s[i] %2 != 0){
         str == 1; 
         break;  
        }
  }
    if(str == 1){
      cout << "No" << endl;
      }
    else{
      cout << "Yes" << endl;
         
    }
}
            
          
          
        


Compiler output:
a.cc: In function 'int main()':
a.cc:14:7: error: expected unqualified-id before 'for'
   14 |       for (int i = 0; i < w.size() ; i++) {
      |       ^~~
a.cc:14:23: error: 'i' was not declared in this scope
   14 |       for (int i = 0; i < w.size() ; i++) {
      |                       ^
Language: C++

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

int main() {
  string  w;
  cin >> w;
 
   
  int count, str, s[30];
      for (int i = 0; i < w.size() ; i++) {
      s[i] = 0;
        s[w[i]-'a']++;
        
      }
  for (int i = 0; i < w.size(); i++){
    
       if (a[i] %2 != 0){
         str == 1; 
         break;  
        }
  }
    if(str == 1){
      cout << "No" << endl;
      }
    else{
      cout << "Yes" << endl;
         
    }
}
            
          
          
        


Compiler output:
a.cc: In function 'int main()':
a.cc:17:12: error: 'a' was not declared in this scope
   17 |        if (a[i] %2 != 0){
      |            ^
Language: C++

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

int main() {
  string  w;
  cin >> w;
 
   
  int count, str;
      for (int i = 0; i < w.size() ; i++) {
      
        a[w[i]-'a']++;
        
      }
  for (int = 0; i < w.size(); i++){
    
       if (a[i] %2 != 0){
         str == 1; 
         break;  
        }
  }
    if(str == 1){
      cout << "No" << endl;
      }
    else{
      cout << "Yes" << endl;
         
    }
}
            
          
          
        

Compiler output:
a.cc: In function 'int main()':
a.cc:12:9: error: 'a' was not declared in this scope
   12 |         a[w[i]-'a']++;
      |         ^
a.cc:15:12: error: expected unqualified-id before '=' token
   15 |   for (int = 0; i < w.size(); i++){
      |            ^
a.cc:15:11: error: expected ';' before '=' token
   15 |   for (int = 0; i < w.size(); i++){
      |           ^~
      |           ;
a.cc:15:12: error: expected primary-expression before '=' token
   15 |   for (int = 0; i < w.size(); i++){
      |            ^
a.cc:15:17: error: 'i' was not declared in this scope
   15 |   for (int = 0; i < w.size(); i++){
      |                 ^
a.cc:15:29: error: expected ')' before ';' token
   15 |   for (int = 0; i < w.size(); i++){
      |       ~                     ^
      |                             )
a.cc:15:31: error: 'i' was not declared in this scope
   15 |   for (int = 0; i < w.size(); i++){
      |                               ^
Language: C++

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

int main() {
  string  w;
  cin >> w;
  vector<char> vec(w.size());
  
    sort(vec.begin(),vec.end());
   
  int count;
      for (int i = 0; i < w.size() ; i++) {
          
       if(w[i-1] != w[i]){
         continue;
        }
      }
          
  if(i % 2 == 0){
          cout << "Yes" << endl;
  }
  else{
    cout << "No" << endl;
    
}
}
            
          
          
        


Compiler output:
a.cc: In function 'int main()':
a.cc:19:6: error: 'i' was not declared in this scope
   19 |   if(i % 2 == 0){
      |      ^
Language: C++

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

int main() {
  string  w;
  cin >> w;
  vector<char> vec(w.size);
  
    sort(vec.begin(),vec.end());
   
  int count;
      for (int i = 0; i < w.size() ; i++) {
          
        if( (w.size()/2 == 0) && (w.at(i-1) == w.at(i))){
          
            count++;
          }
        else if ((w.size()/2 == 0) && (w.at(i-1) != w.at(i))){
          continue;
        }
      }
          
  if(count % 2 == 0){
          cout << "Yes" << endl;
  }
  else{
    cout << "No" << endl;
    
}
}
            
          
          
        


Compiler output:
a.cc: In function 'int main()':
a.cc:7:22: error: invalid use of non-static member function 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]'
    7 |   vector<char> vec(w.size);
      |                    ~~^~~~
In file included from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/basic_string.h:1076:7: note: declared here
 1076 |       size() const _GLIBCXX_NOEXCEPT
      |       ^~~~
Language: C++

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

int main() {
  string  w;
  cin >> w;
  vector<char> vec(w.size);
  
    sort(vec.begin(),vec.end())
   
  int count;
      for (int i = 0; i < w.size() ; i++) {
          
        if( (w.size()/2 == 0) && (w.at(i-1) == w.at(i))){
          
            count++;
          }
        else if ((w.size()/2 == 0) && (w.at(i-1) != w.at(i))){
          continue;
        }
      }
          
  if(count % 2 == 0){
          cout << "Yes" << endl;
  }
  else{
    cout << "No" << endl;
    
}
}
            
          
          
        


Compiler output:
a.cc: In function 'int main()':
a.cc:7:22: error: invalid use of non-static member function 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]'
    7 |   vector<char> vec(w.size);
      |                    ~~^~~~
In file included from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/basic_string.h:1076:7: note: declared here
 1076 |       size() const _GLIBCXX_NOEXCEPT
      |       ^~~~
a.cc:9:32: error: expected ';' before 'int'
    9 |     sort(vec.begin(),vec.end())
      |                                ^
      |                                ;
   10 | 
   11 |   int count;
      |   ~~~                           
a.cc:16:18: error: no post-increment operator for type
   16 |             count++;
      |                  ^~
a.cc:23:12: error: invalid operands of types '<unresolved overloaded function type>' and 'int' to binary 'operator%'
   23 |   if(count % 2 == 0){
      |      ~~~~~~^~~
Language: C++

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

int main() {
  string  w;
  cin >> w;
   
  int count;
      for (int i = 0; i < w.size() ; i++) {
          
        if( (w.size()/2 == 0) && (w.at(i-1) == w.at(i))){
          
            count++;
          }
        else if (w.size()/2 == 0) && (w.at(i-1) != w.at(i))){
          break;
        }
      }
          
  if(count % 2 == 0){
          cout << "Yes" << endl;
  }
  else{
    cout << "No" << endl;
    
}
}
            
          
          
        


Compiler output:
a.cc: In function 'int main()':
a.cc:15:38: error: expected identifier before '(' token
   15 |         else if (w.size()/2 == 0) && (w.at(i-1) != w.at(i))){
      |                                      ^
Language: C++

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

int main() {
  string  w;
  cin >> w;
   
  int count;
      for (int i = 0; i < w.size() ; i++) {
          
        if( (w.size()/2 == 0) && (w.at(i-1) ==  w.at(i))){
          
            count++;
          }
        else if (w.size()/2 == 0) && (w.at(i-1) != w.at(i))){
          break;
        }
          
  if(count % 2 == 0){
          cout << "Yes" << endl;
  }
  else{
    cout << "No" << endl;
    
}
}
            
          
          
        


Compiler output:
a.cc: In function 'int main()':
a.cc:15:38: error: expected identifier before '(' token
   15 |         else if (w.size()/2 == 0) && (w.at(i-1) != w.at(i))){
      |                                      ^
a.cc:26:2: error: expected '}' at end of input
   26 | }
      |  ^
a.cc:4:12: note: to match this '{'
    4 | int main() {
      |            ^
Language: C++

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

int main() {
  string  w;
  cin >> w;
   
  int count;
      for (int i = 0; i < w.size() ; i++) {
          
        if( (w.size()/2 == 0) && (w.at(i-1) ==  w.at(i))){
          
            count++;
          }
        else if (w.size()/2 == 0) && (w.at(i-1) != w.at(i))){
          
        
      
  if(count % 2 == 0){
          cout << "Yes" << endl;
  }
  else{
    cout << "No" << endl;
    
}
}
            
          
          
        


Compiler output:
a.cc: In function 'int main()':
a.cc:15:38: error: expected identifier before '(' token
   15 |         else if (w.size()/2 == 0) && (w.at(i-1) != w.at(i))){
      |                                      ^
a.cc:26:2: error: expected '}' at end of input
   26 | }
      |  ^
a.cc:9:43: note: to match this '{'
    9 |       for (int i = 0; i < w.size() ; i++) {
      |                                           ^
a.cc:26:2: error: expected '}' at end of input
   26 | }
      |  ^
a.cc:4:12: note: to match this '{'
    4 | int main() {
      |            ^
Language: C++

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

int main() {
  string  w;
  cin >> w;
   
  int count;
      for (int i = 0; i < w.size() ; i++) {
        for(int j = 0; j < w.size() ;i++){
          
        if( (w.size()/2 == 0) && (w.at(i) ==  w.at(j))){
            count++;
          }
        }
      }
  if((count/4 = 1 )|| (count/4 = 3)){
          cout << "Yes" << endl;
  }
  else{
    cout << "No" << endl;
    
}
}
            
          
          
        


Compiler output:
a.cc: In function 'int main()':
a.cc:17:12: error: lvalue required as left operand of assignment
   17 |   if((count/4 = 1 )|| (count/4 = 3)){
      |       ~~~~~^~
a.cc:17:29: error: lvalue required as left operand of assignment
   17 |   if((count/4 = 1 )|| (count/4 = 3)){
      |                        ~~~~~^~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define REP(i,a) for(int i = 0; i < (a); i++)
#define ALL(a) (a).begin(),(a).end()
typedef long long ll;
typedef pair<int, int> P;
const int INF = 1e9;
const int MOD = 1e9 + 7;

signed main(){
    string w;
    cin >> w;
    sort(ALL(w));
    if(w.size() % 2 == 1){
        cout << "No" << endl;
        return 0;
    }
    for(int i = 0; i < w.length; i += 2){
        if(w[i] != w[i + 1]){
            cout << "No" << endl;
            return 0;
        }
    }
    cout << "Yes" << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:26: 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 '()' ?)
   18 |     for(int i = 0; i < w.length; i += 2){
      |                        ~~^~~~~~
      |                                ()
Language: C++

#include<bits/stdc++.h>
#define all(x) (x).begin(),(x).end()
using namespace std;
typedef long long ll;

int main(){
    string w;
    cin>>w;
    vecter<ll> a(26,0);
    for(ll i=0;i<w.size();i++) a[w[i]]++;
    for(ll i=0;i<26;i++){
        if(a[i]%2!=0){
            cout<<"No"<<endl;
            break;
        }
        if(i==25) cout<<"Yes"<<endl;
    }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:5: error: 'vecter' was not declared in this scope
    9 |     vecter<ll> a(26,0);
      |     ^~~~~~
a.cc:9:14: error: expected primary-expression before '>' token
    9 |     vecter<ll> a(26,0);
      |              ^
a.cc:9:16: error: 'a' was not declared in this scope
    9 |     vecter<ll> a(26,0);
      |                ^