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

#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
 
#include <vector>
#include <iostream>
#include <conio.h>
#include <math.h>
#include <algorithm>
 
using namespace std;
#define int long long
#define all(x) x.begin(),x.end()
#define max3(a,b,c) max(a,max(b,c))
#define min3(a,b,c) min(a,min(b,c))
#define vi vector<int>
#define vstr vector<string>
#define vbool vector<bool>
#define vvi vector<vector<int> >
#define mii map<int,int>
#define pb push_back
#define pii pair<int,int>
#define vpair vector<pii > 
#define mkp make_pair
#define scan(a,n) for(int i =0 ; i<n ; i++) cin>>a[i]
#define print(a,n) for(int i = 0 ; i < n ; i++) {cout<<a[i]<<' ';}cout<<'\n'
#define mem(a,v) memset(a,v,sizeof(a))
#define loop(i,a,b) for (int i = a; i < b; i++)
#define loope(i,a,b) for (int i = a; i <= b; i++)
#define FastIO ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define PRECISION std::cout.unsetf ( std::ios::fixed );std::cout.precision(9)
#define PI 3.14159265
#define S second
#define F first
#define CHECK cout<<"CHEDEDWB"<<endl
#define br '\n'
int mod = 1e9+7;
int inf = 1e18;
int m_inf = INT_MIN;


int32_t main()
{
	FastIO; PRECISION;
	int n;
	cin>>n;
	vi a(n),b(n);
	loop(i,0,n)
		cin>>a[i]>>b[i];
	sort(all(a));
	sort(all(b));
	int x,y;
	if(n%2==0)
	{
		x = a[n/2]+a[n/2-1];
		y = b[n/2]+b[n/2-1];
	}
	else
	{
		x = a[n/2];
		y = b[n/2];
	}
	cout<<y-x+1<<endl;
	return 0;
} 

Compiler output:
a.cc:6:10: fatal error: conio.h: No such file or directory
    6 | #include <conio.h>
      |          ^~~~~~~~~
compilation terminated.
Language: C++

#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
 
#include <bits/stdc++.h>
 
using namespace std;
#define int long long
#define all(x) x.begin(),x.end()
#define max3(a,b,c) max(a,max(b,c))
#define min3(a,b,c) min(a,min(b,c))
#define vi vector<int>
#define vstr vector<string>
#define vbool vector<bool>
#define vvi vector<vector<int> >
#define mii map<int,int>
#define pb push_back
#define pii pair<int,int>
#define vpair vector<pii > 
#define mkp make_pair
#define scan(a,n) for(int i =0 ; i<n ; i++) cin>>a[i]
#define print(a,n) for(int i = 0 ; i < n ; i++) {cout<<a[i]<<' ';}cout<<'\n'
#define mem(a,v) memset(a,v,sizeof(a))
#define loop(i,a,b) for (int i = a; i < b; i++)
#define loope(i,a,b) for (int i = a; i <= b; i++)
#define FastIO ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define PRECISION std::cout.unsetf ( std::ios::fixed );std::cout.precision(9)
#define PI 3.14159265
#define S second
#define F first
#define CHECK cout<<"CHEDEDWB"<<endl
#define br '\n'
int mod = 1e9+7;
int inf = 1e18;
int m_inf = INT_MIN;


int main()
{
	FastIO; PRECISION;
	int n;
	cin>>n;
	vi a(n),b(n);
	loop(i,0,n)
		cin>>a[i]>>b[i];
	sort(all(a));
	sort(all(b));
	int x,y;
	if(n%2==0)
	{
		x = a[n/2]+a[n/2-1];
		y = b[n/2]+b[n/2-1];
	}
	else
	{
		x = a[n/2];
		y = b[n/2];
	}
	cout<<y-x+1<<endl;
	return 0;
} 

Compiler output:
cc1plus: error: '::main' must return 'int'
Language: C++

#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
 
#include <bits/stdc++.h>
 
using namespace std;
#define int long long
#define all(x) x.begin(),x.end()
#define max3(a,b,c) max(a,max(b,c))
#define min3(a,b,c) min(a,min(b,c))
#define vi vector<int>
#define vstr vector<string>
#define vbool vector<bool>
#define vvi vector<vector<int> >
#define mii map<int,int>
#define pb push_back
#define pii pair<int,int>
#define vpair vector<pii > 
#define mkp make_pair
#define scan(a,n) for(int i =0 ; i<n ; i++) cin>>a[i]
#define print(a,n) for(int i = 0 ; i < n ; i++) {cout<<a[i]<<' ';}cout<<'\n'
#define mem(a,v) memset(a,v,sizeof(a))
#define loop(i,a,b) for (int i = a; i < b; i++)
#define loope(i,a,b) for (int i = a; i <= b; i++)
#define FastIO ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define PRECISION std::cout.unsetf ( std::ios::fixed );std::cout.precision(9)
#define PI 3.14159265
#define S second
#define F first
#define CHECK cout<<"CHEDEDWB"<<endl
#define br '\n'
int mod = 1e9+7;
int inf = 1e18;
int m_inf = INT_MIN;


int32_t main()
{
	FastIO; PRECISION;
	int n;
	cin>>n;
	vi a(n),b(n);
	loop(i,0,n)
		cin>>a[i]>>b[i];
	sort(all(a));
	sort(all(b));
	int x,y;
	if(n%2==0)
	{
		x = a[n/2]+a[n/2-1];
		y = b[n/2]+b[n/2-1];
	}
	else
	{
		x = a[n/2];
		y = b[n/2];
	}
	cout<<y-x+1<<endl;
	return 0;
} 

Compiler output:
In file included from /usr/include/c++/14/string:43,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:4:
/usr/include/c++/14/bits/allocator.h: In destructor 'std::_Vector_base<long long int, std::allocator<long long int> >::_Vector_impl::~_Vector_impl()':
/usr/include/c++/14/bits/allocator.h:182:7: error: inlining failed in call to 'always_inline' 'std::allocator< <template-parameter-1-1> >::~allocator() noexcept [with _Tp = long long int]': target specific option mismatch
  182 |       ~allocator() _GLIBCXX_NOTHROW { }
      |       ^
In file included from /usr/include/c++/14/vector:66,
                 from /usr/include/c++/14/functional:64,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:53:
/usr/include/c++/14/bits/stl_vector.h:132:14: note: called from here
  132 |       struct _Vector_impl
      |              ^~~~~~~~~~~~
Language: C++

vi::iterator vi::end()
+1 overload

Returns a read/write iterator that points one past the last
element in the %vector. Iteration is done in ordinary
element order.




Compiler output:
a.cc:1:1: error: 'vi' does not name a type; did you mean 'void'?
    1 | vi::iterator vi::end()
      | ^~
      | void
Language: C++

pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
 
#include <bits/stdc++.h>
 
using namespace std;
#define int long long
#define all(x) x.begin(),x.end()
#define max3(a,b,c) max(a,max(b,c))
#define min3(a,b,c) min(a,min(b,c))
#define vi vector<int>
#define vstr vector<string>
#define vbool vector<bool>
#define vvi vector<vector<int> >
#define mii map<int,int>
#define pb push_back
#define pii pair<int,int>
#define vpair vector<pii > 
#define mkp make_pair
#define scan(a,n) for(int i =0 ; i<n ; i++) cin>>a[i]
#define print(a,n) for(int i = 0 ; i < n ; i++) {cout<<a[i]<<' ';}cout<<'\n'
#define mem(a,v) memset(a,v,sizeof(a))
#define loop(i,a,b) for (int i = a; i < b; i++)
#define loope(i,a,b) for (int i = a; i <= b; i++)
#define FastIO ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define PRECISION std::cout.unsetf ( std::ios::fixed );std::cout.precision(9)
#define PI 3.14159265
#define S second
#define F first
#define CHECK cout<<"CHEDEDWB"<<endl
#define br '\n'
int mod = 1e9+7;
int inf = 1e18;
int m_inf = INT_MIN;


int32_t main()
{
	FastIO; PRECISION;
	int n;
	cin>>n;
	vi a(n),b(n);
	loop(i,0,n)
		cin>>a[i]>>b[i];
	sort(all(a));
	sort(all(b));
	int x,y;
	if(n%2==0)
	{
		x = a[n/2]+a[n/2-1];
		y = b[n/2]+b[n/2-1];
	}
	else
	{
		x = a[n/2];
		y = b[n/2];
	}
	cout<<y-x+1<<endl;
	return 0;
} 

Compiler output:
a.cc:1:1: error: 'pragma' does not name a type; did you mean '_Pragma'?
    1 | pragma GCC optimize ("O3")
      | ^~~~~~
      | _Pragma
Language: C++

#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
#include <bits/stdc++.h>
#define int long long
#define all(x) x.begin(),x.end()
#define max3(a,b,c) max(a,max(b,c))
#define min3(a,b,c) min(a,min(b,c))
#define vi vector<int>
#define vstr vector<string>
#define vbool vector<bool>
#define vvi vector<vector<int> >
#define mii map<int,int>
#define pb push_back
#define pii pair<int,int>
#define vpair vector<pii > 
#define mkp make_pair
#define scan(a,n) for(int i =0 ; i<n ; i++) cin>>a[i]
#define print(a,n) for(int i = 0 ; i < n ; i++) {cout<<a[i]<<' ';}cout<<'\n'
#define mem(a,v) memset(a,v,sizeof(a))
#define loop(i,a,b) for (int i = a; i < b; i++)
#define loope(i,a,b) for (int i = a; i <= b; i++)
#define FastIO ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define PRECISION std::cout.unsetf ( std::ios::fixed );std::cout.precision(9)
#define PI 3.14159265
#define S second
#define F first
#define CHECK cout<<"CHEDEDWB"<<endl
#define br '\n'
using namespace std;
int mod = 1e9+7;
int inf = 1e18;
int m_inf = INT_MIN;


int32_t main()
{
	FastIO; PRECISION;
	int n;
	cin>>n;
	vi a(n),b(n);
	loop(i,0,n)
		cin>>a[i]>>b[i];
	sort(all(a));
	sort(all(b));
	int x,y;
	if(n%2==0)
	{
		x = a[n/2]+a[n/2-1];
		y = b[n/2]+b[n/2-1];
	}
	else
	{
		x = a[n/2];
		y = b[n/2];
	}
	cout<<y-x+1<<endl;
	return 0;
} 

Compiler output:
In file included from /usr/include/c++/14/string:43,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:3:
/usr/include/c++/14/bits/allocator.h: In destructor 'std::_Vector_base<long long int, std::allocator<long long int> >::_Vector_impl::~_Vector_impl()':
/usr/include/c++/14/bits/allocator.h:182:7: error: inlining failed in call to 'always_inline' 'std::allocator< <template-parameter-1-1> >::~allocator() noexcept [with _Tp = long long int]': target specific option mismatch
  182 |       ~allocator() _GLIBCXX_NOTHROW { }
      |       ^
In file included from /usr/include/c++/14/vector:66,
                 from /usr/include/c++/14/functional:64,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:53:
/usr/include/c++/14/bits/stl_vector.h:132:14: note: called from here
  132 |       struct _Vector_impl
      |              ^~~~~~~~~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int n;
  cin >> n;
  vector<int> a(n), b(n);
  for(int i=0; i<n; i++){
    cin >> a[i] >> b[i];
  }
  sort(a.begin(), a.end()); sort(b.begin(), b.end());
  if(n&1){
    cout << b[n/2]-a[n/2]+1 << endl;
  }
  else{
    double f1 = 1.0*(a[n/2]+a[n/2+1])/2, f2 = 1.0*(b[n/2]+b[n/2+1])/2;
    cout << f2-f1+1 << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:2: error: expected '}' at end of input
   17 | }
      |  ^
a.cc:3:11: note: to match this '{'
    3 | int main(){
      |           ^
Language: C++

#include<bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define forn(i,a,b) for(int i =a;i<b;i++)
#define fi first
#define se second
#define fast ios_base::sync_with_stdio(false);
using namespace std;


typedef long long int ll;
typedef vector<int> vi;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;


void solve(){
	int n;
	cin >> n;
	int a[n],b[n];
	forn(i,0,n){
		cin >> a[i] >> b[i];
	}
	sort(a,a+n);
	sort(b,b+n);
	int l;
	int r;
	ll ans = 0;
	if(n%2==1){
		l = a[n/2];
		r = b[n/2];
	}
	else{
		l = a[n/2] + a[n/2-1];
		r = b[n/2] + b[n/2-1];
	}
	ans = (r-l+1)
	cout << ans << endl;
}

int main(){
	fast;
	#ifndef ONLINE_JUDGE
		freopen("input.txt","r",stdin);
		freopen("output.txt","w",stdout);
	#endif

	// int t;cin >> t;while(t--)
		solve();
}


Compiler output:
a.cc: In function 'void solve()':
a.cc:37:22: error: expected ';' before 'cout'
   37 |         ans = (r-l+1)
      |                      ^
      |                      ;
   38 |         cout << ans << endl;
      |         ~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(int i=int(a);i<int(b);i++)
typedef long long ll;


int main(){
    ll n;cin>>n;
    vector<pair<ll,ll> > MN(n);
    vector<pair<ll,ll> > MX(n);
    rep(i,0,n){
        ll a,b;cin>>a>>b;
        MN[i]=make_pair(a,b);
        MX[i]=make_pair(b,a);
    }
    sort(MN.begin(),MN.end());
    sort(MX.begin(),MX.end());
    double an;
    if(n%2==1){
        double l=MN[(n-1)/2].first;
        double r=MX[(n-1)/2].first;
        an=(r-l);
    }
    else{
        double l=(MN[n/2].first+MN[n/2-1].first)/2.0,r=(MX[n/2].first+MX[n/2-1].first)/2.0;
        an=(r-l)*2;
    }
    ll ans=an
    cout<<ans+1<<endl;
    
}

    









Compiler output:
a.cc: In function 'int main()':
a.cc:29:5: error: expected ',' or ';' before 'cout'
   29 |     cout<<ans+1<<endl;
      |     ^~~~
Language: C++

use std::io::Read;

fn main() {
    let mut buf = String::new();
    std::io::stdin().read_to_string(&mut buf).unwrap();
    let mut iter = buf.split_whitespace();

    let n: usize = iter.next().unwrap().parse().unwrap();

    let mut a: Vec<u32> = Vec::with_capacity(n);
    let mut b: Vec<u32> = Vec::with_capacity(n);

    for _ in 0..n {
        a.push(iter.next().unwrap().parse().unwrap());
        b.push(iter.next().unwrap().parse().unwrap());
    }

    a.sort();
    b.sort();

    let ans: u32 = {
        if n % 2 == 1 {
            let left: u32 = a[n / 2];
            let right: u32 = b[n / 2];
            right - left + 1
        } else {
            let left: u32 = (a[n / 2 - 1] + a[n / 2]) / 2;
            let right: u32 = (b[n / 2 - 1] + b[n / 2]) / 2;
            (right - left) * 2 + 1
        }
    };

    println!("{}", ans);
}

Compiler output:
a.cc:13:14: error: too many decimal points in number
   13 |     for _ in 0..n {
      |              ^~~~
a.cc:1:1: error: 'use' does not name a type
    1 | use std::io::Read;
      | ^~~
a.cc:3:1: error: 'fn' does not name a type
    3 | fn main() {
      | ^~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int n;
  cin>>n;
  vector<int> a(n),b(n);
  for(int i=0;i<n;i++)cin>>a[i]>>b[i];
  sort(a.begin(),a.end());
  sort(b.begin().b.end());
  if(n&1){
  	cout<<b[n/2]-a[n/2];
  }
  else{
  	cout<<b[n/2]+b[n/2-1]-a[n/2]-a[n/2-1];
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:18: error: 'std::vector<int>::iterator' has no member named 'b'
    9 |   sort(b.begin().b.end());
      |                  ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int n;
  cin>>n;
  vector<int> a(n),b(n);
  for(int i=0;i<n;i++)cin>>a[i]>>b[i];
  sort(a.begin(),a.end());
  sort(b.begin().b.end());
  if(n&1){
  	cout<<b[n/2]-a[n/2];
  }
  else{
  	cout<<b[n/2]+b[n/2-1]-a[n/2]-a[n/2-1]
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:18: error: 'std::vector<int>::iterator' has no member named 'b'
    9 |   sort(b.begin().b.end());
      |                  ^
a.cc:14:46: error: expected ';' before '}' token
   14 |         cout<<b[n/2]+b[n/2-1]-a[n/2]-a[n/2-1]
      |                                              ^
      |                                              ;
   15 |   }
      |   ~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i = 0; i < (int)(n); ++i)
using ll = long long;
using P = pair<int,int>;
static const ll INF = 1000000000000000000;
static const ll MOD = 1000000007;

int main(){
	int n;
	cin >> n;
	vector<ll> a(n), b(n);
	rep(i, n) cin >> a[i] >> b[i];
	
	sort(a.begin(), a.end());
	sort(b.begin(), b.end());
	if(n % 2 == 1){
		cout << b[n / 2] - a[n / 2] + 1 << endl;
	}
	else{
		cout << (b[n / 2] + b[n / 2 - 1) - (a[n / 2] + a[n / 2 - 1]) + 1 << endl;
	}
	return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:21:48: error: expected ']' before ')' token
   21 |                 cout << (b[n / 2] + b[n / 2 - 1) - (a[n / 2] + a[n / 2 - 1]) + 1 << endl;
      |                                                ^
      |                                                ]
Language: C++

#include <bits/stdc++.h>

#define FOR(i, l, r) for(ll i = l; i < r; i++)
#define rep(i, N) FOR(i, 0, N)

#define MOD 1000000007
#define INF 1000000000

using ll = long long int;
using namespace std;

typedef pair<int,int> P;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<vi> vvi;

int main() {
    int n; cin >> n;
    vl a(n),b(n);
    rep(i,n){
        cin >> a[i] >> b[i];
    }

    sort(a.begin(), a.end());
    sort(b.begin(), b.end());
    ll ans;
    ll lmed, rmed;
    if(n%2 == 1){
        lmed = a[n/2];
        rmed = b[n/2];
        ans = rmed - lmed + 1;
    } else {
        lmed = (a[n/2]+a[n/2-1])/2;
        rmed = (b[n/2]+b[n/2-1])/2;
        ans = (rmed - lmed)*2;
        
        if((((a[n/2]+a[n/2-1])%2)^((b[n/2]+b[n/2-1])%2)) == 0){
            ans++;
        } else {
            if(((b[n/2]+b[n/2-1])%2)) == 1) ans += 2;
        }
    }

    cout << ans << "\n";
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:40:39: error: expected primary-expression before '==' token
   40 |             if(((b[n/2]+b[n/2-1])%2)) == 1) ans += 2;
      |                                       ^~
Language: Java

import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int [] min = new int [n];
        int [] max = new int [n];
        for(int i=0;i<a;i++){min[i] = sc.nextInt();
                             max[i] = sc.nextInt();
                            }
	    Arrays.sort(min);
        Arrays.sort(max);
        if(n%2==0){System.out.println(max[n/2-1]+max[n/2]-min[n/2-1]-min[n/2]+1);}
        else{System.out.println(max[n/2]-min[n/2]+1);}
	}
}


Compiler output:
Main.java:8: error: cannot find symbol
        for(int i=0;i<a;i++){min[i] = sc.nextInt();
                      ^
  symbol:   variable a
  location: class Main
1 error
Language: Java

import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int [] min = new int [a];
        int [] max = new int [a];
        for(int i=0;i<a;i++){min[i] = sc.nextInt();
                             max[i] = sc.nextInt();
                            }
	    Arrays.sort(min);
        Arrays.sort(max);
        if(n%2==0){System.out.println(max[n/2-1]+max[n/2]-min[n/2-1]-min[n/2]+1);}
        else{System.out.println(max[n/2]-min[n/2]+1);}
	}
}


Compiler output:
Main.java:6: error: cannot find symbol
		int [] min = new int [a];
		                      ^
  symbol:   variable a
  location: class Main
Main.java:7: error: cannot find symbol
        int [] max = new int [a];
                              ^
  symbol:   variable a
  location: class Main
Main.java:8: error: cannot find symbol
        for(int i=0;i<a;i++){min[i] = sc.nextInt();
                      ^
  symbol:   variable a
  location: class Main
3 errors
Language: Java

import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int [] min = new int [a];
        int [] max = new int [a];
        for(int i=0;i<a;i++){min[i] = sc.nextInt();
                             max[i] = sc.nextInt();
                            }
	    Arrays.sort(min);
        Arrays.sort(max);
        if(n%2==0){System.out.println(max[n/2-1]+max[n/2]-min[n/2-1]-min[n/2]+1)}
        else{System.out.println(max[n/2]-min[n/2]+1)}
	}
}


Compiler output:
Main.java:13: error: ';' expected
        if(n%2==0){System.out.println(max[n/2-1]+max[n/2]-min[n/2-1]-min[n/2]+1)}
                                                                                ^
Main.java:14: error: ';' expected
        else{System.out.println(max[n/2]-min[n/2]+1)}
                                                    ^
2 errors
Language: C++

#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;

int n;
pair<double, double> a[200000];

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cin >> n;
	for(int i = 0; i < n; i++) cin >> a[i].first >> a[i].second;
	double lb = -1, ub = -1;
	sort(a, a + n);
	if(n % 2 == 1) lb = a[n / 2].first;
	else lb = (a[n / 2].first + a[n / 2 - 1].first) / 2;
	for(int i = 0; i < n; i++) a[i].first = a[i].second;
	sort(a, a + n);
	if(n % 2 == 1) ub = a[n / 2].first;
	else ub = (a[n / 2].first + a[n / 2 - 1].first) / 2; 
	if(n % 2 == 1) (long long)(cout << ub - lb + 1) << "\n";
	else cout << (long long)(ub * 2 - lb * 2 + 1) << "\n";
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:24: error: invalid cast from type 'std::basic_ostream<char>::__ostream_type' {aka 'std::basic_ostream<char>'} to type 'long long int'
   23 |         if(n % 2 == 1) (long long)(cout << ub - lb + 1) << "\n";
      |                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main(){
  int n;
  cin >> n;
  vector<long long>a(n);
  vector<long long>b(n);
  for(int i=0;i<n;i++){
    cin >> a.at(i) >> b.at(i);
  }
  sort(a.begin(),a.end());
  sort(b.begin(),b.end());
  if(n%2==1){
    int cen=(n+1)/2;
    cout << b.at(cen-1)-a.at(cen-1)+1 << endl;
  }
  else{
    int cen=n/2;
    int low=a.at(cen)+a.at(cen-1);
    int high=b.at(cen)+b.at(cen-1);
    cout << high-low+1 << endl;
  }
}
}


Compiler output:
a.cc:25:1: error: expected declaration before '}' token
   25 | }
      | ^
Language: C++

#include <bits/stdc++.h>
#include<math.h>
#include<queue>
#include<cstdio>
#include<set>
#include<map>
using namespace std;
using ll = long long;

int main(){
    ll N;
    cin >> N;
    vector<ll> A(N+1),B(N+1);
    for(ll i=1; i<N+1; i++){
        cin >> A.at(i) >> B.at(i);
    }
    sort(A.begin(),A.end());
    sort(B.begin(),B.end());
    if(N%2==0){
        double min = (A.at(N/2)+A.at(N/2+1))/2.0;
        double max = (B.at(N/2)+B.at(N/2+1))/2.0;
      	ll ans = (max - min)*2+1
        cout << ans << endl;
    }else{
        ll min = A.at((N+1)/2);
        ll max = B.at((N+1)/2);
        cout << max - min + 1;
    }

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:23:9: error: expected ',' or ';' before 'cout'
   23 |         cout << ans << endl;
      |         ^~~~
Language: C++

#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
ll MOD = 1000000007;
//----------------------------------------------------------------
int main(void) {
  int n;
  cin >> n;
  vec a(n), b(n);
  for(int i=0; i<n; i++){
    cin >> a[i] >> b[i];
  }
  sort(a.begin(), a.end());
  sort(b.begin(), b.end());
  int ans;
  if(n%2==1){
    ans = b[n/2] - a[n/2]+1;
  } else {
    int med1 = b[n/2] + b[n/2-1];
    int med2 = a[n/2] + a[n/2-1];
    ans = med1 - med2 + 1;
  }
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:3: error: 'vec' was not declared in this scope
    9 |   vec a(n), b(n);
      |   ^~~
a.cc:11:12: error: 'a' was not declared in this scope
   11 |     cin >> a[i] >> b[i];
      |            ^
a.cc:11:20: error: 'b' was not declared in this scope
   11 |     cin >> a[i] >> b[i];
      |                    ^
a.cc:13:8: error: 'a' was not declared in this scope
   13 |   sort(a.begin(), a.end());
      |        ^
a.cc:14:8: error: 'b' was not declared in this scope
   14 |   sort(b.begin(), b.end());
      |        ^
Language: C++

#include <iostream>
#include <iomanip>
typedef long long ll;
using namespace std;
const  ll INF = 1e9;
const  ll MOD = 1e9 + 7;
#define repi(i,n,init) for(ll i=init;i<(n);i++)

int main()
{
    int n,ma = INF,mb = 0;
    cin >> n;
    repi(i,n,0){
        int a,b;
        cin >> a >> b;
        a = min(a,ma);
        b = max(mb,b);
    }
    cout << b - a + 1 << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:13: error: 'b' was not declared in this scope; did you mean 'mb'?
   19 |     cout << b - a + 1 << endl;
      |             ^
      |             mb
a.cc:19:17: error: 'a' was not declared in this scope; did you mean 'ma'?
   19 |     cout << b - a + 1 << endl;
      |                 ^
      |                 ma
Language: C++

#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
ll MOD = 1000000007;
//----------------------------------------------------------------
int main(void) {
  int n;
  cin >> n;
  vec a(n), b(n);
  rep(i,n){
    cin >> a[i] >> b[i];
  }
  sort(a.begin(), a.end());
  sort(b.begin(), b.end());
  int ans;
  if(n%2==1){
    ans = b[n/2] - a[n/2]+1;
  } else {
    int med1 = b[n/2] + b[n/2-1];
    int med2 = a[n/2] + a[n/2-1];
    ans = med1 - med2 + 1;
  }
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:3: error: 'vec' was not declared in this scope
    9 |   vec a(n), b(n);
      |   ^~~
a.cc:10:7: error: 'i' was not declared in this scope
   10 |   rep(i,n){
      |       ^
a.cc:10:3: error: 'rep' was not declared in this scope
   10 |   rep(i,n){
      |   ^~~
a.cc:13:8: error: 'a' was not declared in this scope
   13 |   sort(a.begin(), a.end());
      |        ^
a.cc:14:8: error: 'b' was not declared in this scope
   14 |   sort(b.begin(), b.end());
      |        ^
Language: C++

#include <bits/stdc++.h>
#define be(v) (v).begin(),(v).end()
#define pb(q) push_back(q)
typedef long long ll;
using namespace std;
const ll mod=1000000007, INF=(1LL<<60);
#define doublecout(a) cout<<fixed<<setprecision(10)<<a<<endl;

int main() {
    cin.tie(0);
    cout.tie(0);
    ios::sync_with_stdio(false);
    ll n;
    cin >> n;
    vector<ll> c(n), d(n);
    for(int i=0;i<n;i++){
    	cin >> c[i] >> d[i];

    }
    sort(be(c));
    sort(be(b));
    ll mi, ma;
    if(n&1){
    	mi = c[n/2];
    	ma = d[n/2];
    	cout << ma - mi + 1 << endl;
    }else{
    	bool maki = false, niko = false;
    	if((c[n/2] - c[n/2 - 1]) % 2 == 0){
    		mi = (c[n/2] + c[n/2 - 1]) / 2;
    	}else{
    		mi = (c[n/2] + c[n/2 - 1]) / 2 + 1;
    		maki = true;
    	}
    	if((d[n/2] - d[n/2 - 1]) % 2 == 0){
    		ma = (d[n/2] + d[n/2 - 1]) / 2;
    	}else{
    		ma = (d[n/2] + d[n/2 - 1]) / 2;
    		niko = true;
    	}
    	ll ans = (ma - mi) * 2LL + 1;
    	if(maki) ans++;
    	if(niko) ans++;
    	cout << ans << endl;
    }
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:13: error: 'b' was not declared in this scope
   21 |     sort(be(b));
      |             ^
a.cc:2:16: note: in definition of macro 'be'
    2 | #define be(v) (v).begin(),(v).end()
      |                ^
Language: C++

#include <bits/stdc++.h>
#include <boost/multiprecision/cpp_dec_float.hpp>
#include <boost/multiprecision/cpp_int.hpp>
#pragma GCC target("avx")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")    
using namespace std;
namespace mp = boost::multiprecision;
// 任意長整数型
using Bint = mp::cpp_int;
// 仮数部が1024ビットの浮動小数点数型(TLEしたら小さくする)
using Real = mp::number<mp::cpp_dec_float<1024>>;
#define lli long long int
#define uli unsigned long long int
#define INF 999999999999
#define rep(i,m,n) for(lli i = m;i < n;i++)
#define rrep(i,m,n) for(lli i=m-1;i>=n;i--)
#define pb(n) push_back(n)
#define UE(N) N.erase(unique(N.begin(),N.end()),N.end());
#define Sort(n) sort(n.begin(), n.end())
#define Rev(n) reverse(n.begin(),n.end())
#define Out(S) cout << S << endl
#define NeOut(S) cout << S
#define HpOut(S) cout << setprecision(50) << S << endl
#define Vec(K,L,N,S) vector<L> K(N,S)
#define DV(K,L,N,M,S) vector<vector<L>> K(N,vector<L>(M,S))
#define TV(K,L,N,M,R,S) vector<vector<vector<L>>> K(N,vector<vector<L>>(M,vector<L>(R,S)))
#define pint pair<lli,lli>
#define paf(L,R) pair<L,R>
#define mod 998244353
#define MAX 10000000
#define ALL(a)  a.begin(),a.end()
#define chmax(a, b) a = (((a)<(b)) ? (b) : (a))
#define chmin(a, b) a = (((a)>(b)) ? (b) : (a))
int main(){
  ios::sync_with_stdio(false);
  cin.tie(0);
  cin >> N;
  Vec(A,lli,N,0);
  Vec(B,lli,N,0);
  rep(i,0,N)cin >> A[i] >> B[i];
  Sort(A);Sort(B);
  if(N&1)Out(B[N/2]-A[N/2]+1);
  else Out((B[N/2]+B[N/2-1])/2-(A[N/2]+A[N/2-1])/2+1);
}

Compiler output:
a.cc:2:10: fatal error: boost/multiprecision/cpp_dec_float.hpp: No such file or directory
    2 | #include <boost/multiprecision/cpp_dec_float.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <iostream>
#include <string>
#include <vector>
#include <map>
#include <algorithm>
#include <set>
#include <queue>
using namespace std;
typedef long long ll;

void solve(){
  int n; cin >> n;
  vector<ll> a(n), b(n);
  for(int i = 0; i < n; i++){
    cin >> a[i] >> b[i];
  }
  sort(a.begin(), a.end());
  sort(b.begin(), b.end());
  ll x, y;
  if(n % 2 == 1){
    x = a[n/2];
    y = b[n - n/2 - 1];
  }
  else{
    x = a[n/2 - 1];
    y = b[n - n/2];
  }
  cout << max(y - x + 1, 0) << endl;
  return;
}

int main(){
  solve();
  return 0;
}


Compiler output:
a.cc: In function 'void solve()':
a.cc:28:14: error: no matching function for call to 'max(ll, int)'
   28 |   cout << max(y - x + 1, 0) << endl;
      |           ~~~^~~~~~~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:28:14: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   28 |   cout << max(y - x + 1, 0) << endl;
      |           ~~~^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:5:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:28:14: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   28 |   cout << max(y - x + 1, 0) << endl;
      |           ~~~^~~~~~~~~~~~~~
Language: C++

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

int main(){
  int n;
  cin>>n;
  vector<double>x(n);
  vector<double>y(n);
  for(int i=0;i<n;i++){
    cin>>x[i]>>y[i];
  }
  sort(x.begin(),x.end());
  sort(y.begin(),y.end());
  int ans;
  if(n%2==1){
    cout<<round(y[n/2]-x[n/2]+1)<<endl;
    return 0;
  }
  else{
    ans=(y[n/2]+y[n/2-1])-(x[n/2]+x[n/2-1])+1;
  cout<<ans<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:22:2: error: expected '}' at end of input
   22 | }
      |  ^
a.cc:4:11: note: to match this '{'
    4 | int main(){
      |           ^
Language: C++

#include <iostream>
#include <vector>
#include <string>
#include <utility>
#include <algorithm>
#include <cmath>
#include <queue>
#include <set>
#include <map>
#include <cassert>
#include <fstream>
#include <iomanip>
#include <stack>

using namespace std;

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

const ll mod = 1e9 + 7;
const ll mmod = 998244353;

vector<ll> dx = {1, -1, 0, 0};
vector<ll> dy = {0, 0, 1, -1};

vector<vector<ll>> g;
vector<vector<ll>> par;
vector<vector<ll>> dp;
vector<ll> d;


int main() {
    
    
    cin.tie(0);
    ios_base::sync_with_stdio(0);
    ll n;
    cin >> n;
    vector<P> v(n);
    vector<P> v2(n);
    for (int i = 0; i < n; ++i)
    {
        cin >> v[i].first >> v[i].second;
        v2[i] = v[i];
        swap(v2[i].first, v2[i].second);
    }
    sort(v.begin(), v.end());
    sort(v2.begin(), v2.end());
    
    if (n % 2)
    {
        ll mi = v[n / 2].first;
        ll ma = v2[n / 2].second;
        cout << ma - mi + 1ll << endl;
    }
    else
    {
        ll mi = v[n / 2].first + v[n / 2].first;
        ll na = v2[n / 2].second + v[n / 2].second;
        cout << ma - mi + 1ll << endl;
    }
    
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:60:17: error: 'ma' was not declared in this scope; did you mean 'na'?
   60 |         cout << ma - mi + 1ll << endl;
      |                 ^~
      |                 na
Language: C++

#include <bits/stdc++.h>
#define rep(i,n)for(long long i=0;i<(long long)(n);i++)
#define all(a) a.begin(), a.end()
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll, ll> P;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }
 
const ll MOD=1e9+7;
const ll INF=1e18;
const int MAX=510000;
const double pi=acos(-1);
int dx[8] = {1,0,-1,0,1,1,-1,-1};
int dy[8] = {0,1,0,-1,-1,1,1,-1};
// int d[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};



int main(){
  cin.tie(0);
  ios::sync_with_stdio(false); 
  
  int n;
  cin >> n;
  vector<ll>a(n),b(n);
  rep(i,n) cin >> a[i] >> b[i];
  sort(a.begin(),a.end());
  sort(b.begin(),b.end());
  ll c,d;
  if(n&1){
    c=a[n/2];
    d=b[m/2];
    cout << d-c+1 << endl;
  }
  else{
    c=a[n/2]+a[n/2-1];
    d=b[m/2]+b[n/2-1];
    cout << d-c+1 << endl;
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:34:9: error: 'm' was not declared in this scope
   34 |     d=b[m/2];
      |         ^
a.cc:39:9: error: 'm' was not declared in this scope
   39 |     d=b[m/2]+b[n/2-1];
      |         ^
Language: C

#include<stdio.h>
#include<stdlib.h>
int lb(int l,int r,int n,int *d){
  int m=(l+r)/2;
  if(l==r)return m;
  return n<=d[m]?lb(l,m,n,d):lb(m+1,r,n,d);
}
long long R=1,C=1,H[2000010],N[2000010];
//評価関数（いまはMIN）
int hyouka(int a,int b){
  if(C<b)return 1;
  if(C<a||b==0)return 0;
  return N[H[a]]<N[H[b]]||N[H[a]]==N[H[b]]&&H[a]%2==1?1:0;
}
//挿入関数
void hin(long long a){
  int i=C++;
  for(N[H[0]=R]=a;hyouka(0,i/2);i/=2)H[i]=H[i/2];
  H[i]=R++;
}
//取り出す関数
int hout(){
  int rt=H[1],i,j=2,k=H[--C];
  for(i=1;hyouka(i,C);i=j)H[i]=H[j=i*2+1-hyouka(i*2,i*2+1)];
  H[j/2]=k;
  return rt;
}
void f(int *a,int n,int *b){
  R=C=1;
  int i,d[200010];
  for(i=0;i<n;i++)hin(a[i]);
  for(i=0;i<n;i++)d[i]=hout();
  for(i=0;i<n;i++)b[i]=lb(0,n,a[i],d);
}
int main(){
  long long n,a[200010],b[200010],i,lb=0,bf,ans=0,ra,j,r,l;
  scanf("%lld",&n);
  for(i=0;i<n;i++)scanf("%lld %lld",&a[i],&b[i]);
  if(n%2){
    
    for(i=0;i<n;i++)hin(a[i]*2);
    for(i=0;i<n/2;i++)j=N[hout()];
    l=(N[H[1]]-j)/2;
    R=C=1;
    for(i=0;i<n;i++)hin(b[i]*2);
    for(i=0;i<n/2;i++)j=N[hout()];
    r=(N[H[1]]-j)/2;
    printf("%lld\n",r-l);
  }
  else{
    for(i=0;i<n;i++)hin(a[i]*2);
    for(i=0;i<n/2;i++)hout();
    l=N[H[1]];
    R=C=1;
    for(i=0;i<n;i++)hin(b[i]*2);
    for(i=0;i<n/2;i++)hout();
    r=N[H[1]];
    pritnf("%lld\n",r-l);
  }
  return 0;
}
    


Compiler output:
main.c: In function 'main':
main.c:58:5: error: implicit declaration of function 'pritnf'; did you mean 'printf'? [-Wimplicit-function-declaration]
   58 |     pritnf("%lld\n",r-l);
      |     ^~~~~~
      |     printf
Language: C

#include<stdio.h>
#include<stdlib.h>
int lb(int l,int r,int n,int *d){
  int m=(l+r)/2;
  if(l==r)return m;
  return n<=d[m]?lb(l,m,n,d):lb(m+1,r,n,d);
}
long long R=1,C=1,H[2000010],N[2000010];
//評価関数（いまはMIN）
int hyouka(int a,int b){
  if(C<b)return 1;
  if(C<a||b==0)return 0;
  return N[H[a]]<N[H[b]]||N[H[a]]==N[H[b]]&&H[a]%2==1?1:0;
}
//挿入関数
void hin(long long a){
  int i=C++;
  for(N[H[0]=R]=a;hyouka(0,i/2);i/=2)H[i]=H[i/2];
  H[i]=R++;
}
//取り出す関数
int hout(){
  int rt=H[1],i,j=2,k=H[--C];
  for(i=1;hyouka(i,C);i=j)H[i]=H[j=i*2+1-hyouka(i*2,i*2+1)];
  H[j/2]=k;
  return rt;
}
void f(int *a,int n,int *b){
  R=C=1;
  int i,d[200010];
  for(i=0;i<n;i++)hin(a[i]);
  for(i=0;i<n;i++)d[i]=hout();
  for(i=0;i<n;i++)b[i]=lb(0,n,a[i],d);
}
int main(){
  long long n,a[200010],b[200010],i,lb=0,bf,ans=0,ra,j;
  scanf("%lld",&n);
  for(i=0;i<n;i++)scanf("%lld %lld",&a[i],&b[i]);
  if(n%2){
    
    for(i=0;i<n;i++)hin(a[i]*2);
    for(i=0;i<n/2;i++)j=N[hout()];
    l=(N[H[1]]-j)/2;
    R=C=1;
    for(i=0;i<n;i++)hin(b[i]*2);
    for(i=0;i<n/2;i++)j=N[hout()];
    r=(N[H[1]]-j)/2;
    printf("%d\n",r-l);
  }
  else{
    for(i=0;i<n;i++)hin(a[i]*2);
    for(i=0;i<n/2;i++)hout();
    l=N[H[1]];
    R=C=1;
    for(i=0;i<n;i++)hin(b[i]*2);
    for(i=0;i<n/2;i++)hout();
    r=N[H[1]];
    pritnf("%d\n",r-l);
  }
  return 0;
}
    


Compiler output:
main.c: In function 'main':
main.c:43:5: error: 'l' undeclared (first use in this function)
   43 |     l=(N[H[1]]-j)/2;
      |     ^
main.c:43:5: note: each undeclared identifier is reported only once for each function it appears in
main.c:47:5: error: 'r' undeclared (first use in this function)
   47 |     r=(N[H[1]]-j)/2;
      |     ^
main.c:58:5: error: implicit declaration of function 'pritnf'; did you mean 'printf'? [-Wimplicit-function-declaration]
   58 |     pritnf("%d\n",r-l);
      |     ^~~~~~
      |     printf
Language: C++

#include<bits/stdc++.h>

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

#define PB(N) push_back(N)

using namespace std;

using Graph = vector<vector<int>>;

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

  vector<int> M(pow(10,9));
  set<int> counter;
  rep(i,N){
    int a,b;
    cin >> a >> b;
    M[a]++;
    M[b]++;
    counter.insert(a);
    counter.insert(b);
  }
  int buffer=1;
  rep(i,counter.size()){
    buffer=buffer*(i+1)/M[counter[i]];
  }
  cout << buffer;



  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:29:34: error: no match for 'operator[]' (operand types are 'std::set<int>' and 'int')
   29 |     buffer=buffer*(i+1)/M[counter[i]];
      |                                  ^
Language: C++

#include<bits/stdc++.h>
int a[200010],b[200010];
int main()
{
  int n;
  cin>>n;
  long long ans1=0,ans2=0;
  for(int i=0;i<n;i++)
  {
  	cin>>a[i]>>b[i];
  }
  sort(a,a+n);
  sort(b,b+n);
  if(n%2==1)
  {
  	ans1=a[(n+1)/2-1];
  	ans2=b[(n+1)/2-1];
  }
  else
  {
  	ans1=a[n/2-1]+a[n/2];
  	ans2=b[n/2-1]+b[n/2];
  }
  cout<<(ans2-ans1+1)<<endl;
  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 /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:12:3: error: 'sort' was not declared in this scope; did you mean 'std::sort'?
   12 |   sort(a,a+n);
      |   ^~~~
      |   std::sort
In file included from /usr/include/c++/14/algorithm:86,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51:
/usr/include/c++/14/pstl/glue_algorithm_defs.h:296:1: note: 'std::sort' declared here
  296 | sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last);
      | ^~~~
a.cc:24:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   24 |   cout<<(ans2-ans1+1)<<endl;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:24:24: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   24 |   cout<<(ans2-ans1+1)<<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;    
typedef long long ll;
typedef pair<ll, ll> pll;
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
const bool DEBUG = true;

struct Area
{
    ll left;
    ll right;
};

bool cmp( Area &a, Area &b ){
    return a.left < b.left;
}
 
int main(){
    


    int n;
    cin >> n;

    
   vector<ll> left(n);
   vector<ll> right(n);

   for(int i = 0; i < n; i++){
       cin >> left[i];
       cin >> right[i];
   }

    sort(all(left));
    sort(all(right));

    ll L, R;
    if(n % 2 == 1){
        L = left[ n % 2 ];
        R = right[n % 2];
    }
    if(n % 2 == 0){
        L = left[n % 2];
        R = right[ n % 2 + 1 ];
    }
    if( n % 2 == 1 ){
        cout << R - L + 1 << endl;
    }
    else{
        cout << R - L + 1 + R - L << endl;
    }



   /*
    int kakko_left = 0;
    int kakko_right = 0;
        ll Left_edge = 0;
        ll Right_edge = 0;

    for(int i = 0; i < n; i++){
        kakko_left ++;
        que.push(v[i].right);
        ll tmp_right = 0;

        if(DEBUG){
            cout << v[i].left << endl;
        }
 
        if(n % 2 == 1){
            if( (n % 2 + 1) == kakko_left ){
                Left_edge = v[i].left;
            }
        }
        else{
            if( n % 2 == kakko_left ){
                Left_edge = v[i].left;
            }
        }

 
        while (que.top() <= v[i].left )
        {
            ll r  = que.top();
            que.pop();
            kakko_right ++;
            if(n % 2 == 1){
                if( (n % 2 + 1) == kakko_right ){
                    Right_edge = r;
                }
            }
            else{
                if( n % 2 == kakko_right ){
                    Right_edge = r;
                }                
            }
        }
        */
 
    }    


    return 0;
}

Compiler output:
a.cc:105:5: error: expected unqualified-id before 'return'
  105 |     return 0;
      |     ^~~~~~
a.cc:106:1: error: expected declaration before '}' token
  106 | }
      | ^
Language: C++

#include <bits/stdc++.h>
#define rep(i, a, b) for (int i = a; i < (b); i++)
#define rrep(i, a, b) for (int i = a; i >= (b); i--)
#define all(x) (x).begin(), (x).end()
using namespace std;
using ll = long long;
using P = pair<int, int>;
template <class T>
inline bool chmin(T& a, T b) {
   if (a > b) {
      a = b;
      return true;
   }
   return false;
}
template <class T>
inline bool chmax(T& a, T b) {
   if (a < b) {
      a = b;
      return true;
   }
   return false;
}
void hr() {
   cerr << "--------------" << endl;
}
const int INF = 1001001001;
const int MOD = 1000000007;
// const int MOD = 998244353;

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

   int n;
   cin >> n;
   vector<int> a(n), b(n);
   rep(i, 0, n) cin >> a[i] >> b[i];
   sort(all(a));
   sort(all(b));
   if (n % 2) {
      int mida = a[(n + 1) / 2];
      int midb = b[(n + 1) / 2];
   } else {
      int mida = a[n / 2] + a[n / 2 + 1];
      int midb = b[n / 2] + b[n / 2 + 1];
   }
   int ans = (mida + midb) / 2;
   cout << ans << endl;
   return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:48:15: error: 'mida' was not declared in this scope
   48 |    int ans = (mida + midb) / 2;
      |               ^~~~
a.cc:48:22: error: 'midb' was not declared in this scope
   48 |    int ans = (mida + midb) / 2;
      |                      ^~~~
Language: C++

//Hey u r far away to know this
#include <bits/stdc++.h>
using namespace std;
#define     ff      	    	first
#define     pb 	         	push_back
#define     ss          		second
#define     ll      	    	long long
#define     MAX  	       	5000
#define     mpi         		map<int, int>
#define     mpll        		map<ll, ll>
#define     pll         		pair<ll, ll>
#define     plld        		pair<ll, double>
#define     SKILLER     		ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define     vi          		std::vector<int>
#define     vll         		std::vector<ll>
#define     vs          		std::vector<string>
#define     vvi         		std::vector<std::vector<int>>
#define     vvll        		std::vector<std::vector<ll>>
#define     all(v)      		v.begin(), v.end()
#define     allr(v)      		v.rbegin(), v.rend()
#define     loop(i, a, b) 	for(int i = a; i < b; i++)
#define 	  debug(x) 		cout << x <<" " <<"\n";
#define 	  debug1(x, y) 	cout << x << " " << y  << "\n";
#define 	  debug2(x, y, z) 	cout << x << " " << y << " " << z<<"\n";
#define 	  int 			ll
const   int N = 1e6+5, Mod = 1e9 + 7;
int32_t main(){
    	SKILLER;
    	#ifndef ONLINE_JUDGE
     
        int n; cin >> n;
        int mn = 0, mx = 0;
        int m = n;
      	vector<int> a, b;
      	while(m--){
      		int x, y; cin >> x >> y;
      		a.pb(x);
      		b.pb(y);
      		mx += y;
      		mn += x;
      	}
      	sort(all(a));
      	sort(all(b));
      	if(n&1){
      		cout << b[(n + 1)/2 - 1] - a[(n + 1)/2 - 1] + 1;
      	}
        else{

        	cout << (b[n/2] + b[n/2 - 1])/2 - (a[n/2] + a[n/2 - 1])/2 + 2;
        }
    	return 0;
}

Compiler output:
a.cc:29: error: unterminated #ifndef
   29 |         #ifndef ONLINE_JUDGE
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  int n;
   cin>>n;
  vector<vector<int>> v(n)(2);
 for(int i=0;i<n;i++)
   for(int j=0;j<2;j++)
     cin>>v[i][j];
  if(n%2==1)
    cout<<(v[n/2][1] - v[n/2][0] + 1);
  else
  {
    int a=v[n/2][0]; int b=v[n/2][1];
    int a=v[n/2][0]; int b=v[n/2][1];
  }
  return 0;
}
  

Compiler output:
a.cc: In function 'int main()':
a.cc:7:27: error: expected ',' or ';' before '(' token
    7 |   vector<vector<int>> v(n)(2);
      |                           ^
a.cc:16:9: error: redeclaration of 'int a'
   16 |     int a=v[n/2][0]; int b=v[n/2][1];
      |         ^
a.cc:15:9: note: 'int a' previously declared here
   15 |     int a=v[n/2][0]; int b=v[n/2][1];
      |         ^
a.cc:16:26: error: redeclaration of 'int b'
   16 |     int a=v[n/2][0]; int b=v[n/2][1];
      |                          ^
a.cc:15:26: note: 'int b' previously declared here
   15 |     int a=v[n/2][0]; int b=v[n/2][1];
      |                          ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
#define FOR(i,l,r) for(i=l;i<r;i++)
#define REP(i,n) FOR(i,0,n)
#define ALL(x) x.begin(),x.end()
#define P pair<ll,ll>
#define F first
#define S second
signed main(){
  ll N,i,ans,x,y;cin>>N;
  ll A[N],B[N];vector<P>a(N),b(N);
  REP(i,N){
    cin>>A[i]>>B[i];
    a.at(i)=P(A[i],i);
    b.at(i)=P(B[i],i);
  }
  sort(ALL(a));sort(ALL(b));
  if(N%2){
    x=A[a.at(N/2).S];
    y=B[b.at(N/2).S];
    ans=y-x;
    REP(i,N-1)if(b.at(i).F>=x&&a.at(i+1).F<=y){
      ans-=max((ll)(0),a.at(i+1).F-b.at(i).F);
    }
  }
  else{
    x=A[a.at(N/2-1).S];
    y=A[a.at(N/2).S];
    z=B[b.at(N/2-1).S];
    w=B[b.at(N/2).S];
    ans=z+w-x-y;
  }
  cout<<ans<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:30:5: error: 'z' was not declared in this scope
   30 |     z=B[b.at(N/2-1).S];
      |     ^
a.cc:31:5: error: 'w' was not declared in this scope
   31 |     w=B[b.at(N/2).S];
      |     ^