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

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.*;
	
public class Solution
{ 		
	private static class Pair implements Comparable<Pair>
	{
		int x;
		int y;
		public Pair(int x,int y)
		{
			this.x=x;
			this.y=y;
		}
		@Override
		public int compareTo(Pair p) {
			if(this.x<p.x)
				return -1;
			if(this.x>p.x)
				return 1;
			if(this.y<p.y)
				return -1;
			if(this.y>p.y)
				return 1;
			return 0;
		}
		public String toString()
		{
			return "("+x+","+y+")";
		}
	}
	public static void main(String[] args)
	{
		Scanner scan = new Scanner(new BufferedReader(new InputStreamReader(System.in)));
		
		int n = scan.nextInt();
		Pair[] arr1 = new Pair[n];
		Pair[] arr2 = new Pair[n];
		
		for(int i=0;i<n;i++)
			arr1[i] = new Pair(scan.nextInt(),scan.nextInt());
		
		for(int i=0;i<n;i++)
			arr2[i] = new Pair(scan.nextInt(),scan.nextInt());
		
		Arrays.sort(arr1);
		Arrays.sort(arr2);
		int count = 0;
		
		for(int i=0,j=0;j<n;)
		{
			if(arr1[i].compareTo(arr2[j])<0)
			{
				count++;
				i++;
				j++;
			}
			else
				j++;		
		}
		System.out.println(count);
	}
}


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

#include<iostream>
#include<string>
#include<cstdio>
#include<algorithm>
#include<cstdlib>
#include<cmath>
#include<vector>
#include<utility>
#include<queue>
#include<stack>
#include<set>
#include<map>
#include<unordered_set>
#include<bitset>
using namespace std;
//#define MODE 1
#ifdef MODE
#define DEB(X) cout<< #X <<": "<<X<<" ";
#define ARDEB(i,X) cout<< #X <<"["<<i<<"]: "<<X[i]<<" ";
#define END cout<<endl;
#else
#define DEB(X) {}
#define ARDEB(i,X) {}
#define END {}
#endif
typedef long long int ll;
typedef pair<int,int> P;
struct edge{int to,cost;};
#define REP(i,n) for(int i=0;i<(n);i++)
const int INF=100000000;

struct D(){
	int x,y;
}

bool com(D a,D b){
	return (a.x<b.x&&a.y<b.y);
}

bool com2(D a,D b){
	if(a.x!=b.x)return a.y<b.y;
	else return a.x<b.y;
}

bool com3(D a,D b){
	if(a.y!=b.y)return a.y<b.y;
	else return a.x<b.x;
}

int main(){
	cout<<boolalpha;
	int n,ans=0;
	D a[110],b[110];
	bool f[110];
	REP(i,n){
		int c,d;
		cin>>c>>d;
		a[i].x=c,a[i].y=d;
	}
	REP(j,n){
		int c,d;
		cin>>c>>d;
		b[i].x=c,b[i].y=d;
	}
	sort(a,a+n,com2);
	sort(b,b+n,com3);
	for(int i=n-1;0<=i;i--){
		for(int j=0;j<n;j++){
			if(com(a[i],b[j])&&f[j]==false){
				f[j]=true;
				ans++;
				break;
			}
		}
	}
	cout<<ans<<endl;
	return 0;
}

Compiler output:
a.cc:32:10: error: expected unqualified-id before ')' token
   32 | struct D(){
      |          ^
a.cc:36:12: error: 'a' has incomplete type
   36 | bool com(D a,D b){
      |          ~~^
a.cc:32:8: note: forward declaration of 'struct D'
   32 | struct D(){
      |        ^
a.cc:36:16: error: 'b' has incomplete type
   36 | bool com(D a,D b){
      |              ~~^
a.cc:32:8: note: forward declaration of 'struct D'
   32 | struct D(){
      |        ^
a.cc:40:13: error: 'a' has incomplete type
   40 | bool com2(D a,D b){
      |           ~~^
a.cc:32:8: note: forward declaration of 'struct D'
   32 | struct D(){
      |        ^
a.cc:40:17: error: 'b' has incomplete type
   40 | bool com2(D a,D b){
      |               ~~^
a.cc:32:8: note: forward declaration of 'struct D'
   32 | struct D(){
      |        ^
a.cc:45:13: error: 'a' has incomplete type
   45 | bool com3(D a,D b){
      |           ~~^
a.cc:32:8: note: forward declaration of 'struct D'
   32 | struct D(){
      |        ^
a.cc:45:17: error: 'b' has incomplete type
   45 | bool com3(D a,D b){
      |               ~~^
a.cc:32:8: note: forward declaration of 'struct D'
   32 | struct D(){
      |        ^
a.cc: In function 'int main()':
a.cc:53:11: error: elements of array 'D a [110]' have incomplete type
   53 |         D a[110],b[110];
      |           ^
a.cc:53:11: error: storage size of 'a' isn't known
a.cc:53:18: error: elements of array 'D b [110]' have incomplete type
   53 |         D a[110],b[110];
      |                  ^
a.cc:53:18: error: storage size of 'b' isn't known
a.cc:63:19: error: 'i' was not declared in this scope
   63 |                 b[i].x=c,b[i].y=d;
      |                   ^
Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
#include <cmath>

using namespace std;

int N;
vector<int> G[100];
int match[10000];
bool used[10000];

void add_edge(int u, int v) {
    G[u].push_back(v);
    G[v].push_back(u);
}

bool dfs(int v) {
    used[v] = true;
    for (int i = 0; i < G[v].size(); ++i) {
        int u = G[v][i], w = match[u];
        if (w < 0 || !used[w] && dfs(w)) {
            match[v] = u;
            match[u] = v;
            return true;
        }
    }
    return false;
}

int bipartite_matching() {
    int res = 0;
    memset(match, -1, sizeof(match));

    for (int v = 0; v < N; ++v) {
        if (match[v] < 0) {
            memset(used, 0, sizeof(used));
            if (dfs(v)) {
                res++;
            }
        }
    }

    return res;
}

int main() {
    cin >> N;

    vector<pair<int, int> > red, blue;
    for (int i = 0; i < N; ++i) {
        int a, b;
        cin >> a >> b;

        red.emplace_back(make_pair(a, b));
    }

    for (int i = 0; i < N; ++i) {
        int c, d;
        cin >> c >> d;

        blue.emplace_back(make_pair(c, d));
    }

    for (int j = 0; j < blue.size(); ++j) { // blue
        for (int i = 0; i < red.size(); ++i) { // red
            if (blue[j].first > red[i].first && blue[j].second > red[i].second) {
                add_edge(i, j);
                add_edge(j, i);
            }
        }
    }

    cout << bipartite_matching() << endl;
}

Compiler output:
a.cc: In function 'int bipartite_matching()':
a.cc:33:5: error: 'memset' was not declared in this scope
   33 |     memset(match, -1, sizeof(match));
      |     ^~~~~~
a.cc:5:1: note: 'memset' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    4 | #include <cmath>
  +++ |+#include <cstring>
    5 |
Language: C++

#include<iostream>                                         
#include<cstdio>
#include<cstdlib>
#include<algorithm>
#include<cstring>
#include<string>
#include<vector>
using namespace std;
int N;

void sort_array(int **x){
    for(int i=0;i<N;i++){
        for(int j=0;j<N;j++){
            if(x[i][0]>x[j][0])
                swap(x[i],x[j]);
        }
    }
}

int main(){
    cin>>N;
    int a[N][2],b[N][2];
    for(int i=0;i<N;i++){
        cin>>a[i][0]>>a[i][1];
    }
    for(int i=0;i<N;i++){
        cin>>b[i][0]>>b[i][1];
    }
    int cunt=0;
    int  **cut;
    cut=(int **)calloc(2,sizeof(int *));
    for(int i=0;i<2;i++)
        cut[i]=(int *)calloc(N*N,sizeof(int*));    

    for(int i=0;i<N;i++){
        if(cut[0][i]||cut[1][i])continue;
        for(int j=0;j<N;j++){
            if(cut[0][j]||cut[1][j])continue;
            if(a[i][0]<b[j][0]&&a[i][1]<b[j][1]){            
                
                cunt++;
                cut[0][i]=1;
                cut[0][j]=1;
                cut[1][i]=1;
                cut[1][j]=1;
            }   


        }   
    }   
    cout<<cunt<<"\n";
return0
}

Compiler output:
a.cc: In function 'int main()':
a.cc:52:1: error: 'return0' was not declared in this scope
   52 | return0
      | ^~~~~~~
Language: C++

#include<iostream>                                         
#include<cstdio>
#include<cstdlib>
#include<algorithm>
#include<cstring>
#include<string>
#include<vector>
using namespace std;
int N;

void sort_array(int **x){
    for(int i=0;i<N;i++){
        for(int j=0;j<N;j++){
            if(x[i][0]>x[j][0])
                swap(x[i],x[j]);
        }
    }
}

int main(){
    cin>>N;
    int a[N][2],b[N][2];
    for(int i=0;i<N;i++){
        cin>>a[i][0]>>a[i][1];
    }
    for(int i=0;i<N;i++){
        cin>>b[i][0]>>b[i][1];
    }
    int cunt=0;
    int  **cut;
    cut=(int **)calloc(2,sizeof(int *));
    for(int i=0;i<2;i++)
        cut[i]=(int *)calloc(N*N,sizeof(int*));    

    for(int i=0;i<N;i++){
        if(cut[0][i]||cut[1][i])continue;
        for(int j=0;j<N;j++){
            if(cut[0][j]||cut[1][j])continue;
            if(a[i][0]<b[j][0]&&a[i][1]<b[j][1]){            
                
                cunt++;
                cut[0][i]=1;
                cut[0][j]=1;
                cut[1][i]=1;
                cut[1][j]=1;
            }   


        }   
    }   
    cout<<cunt<<"\n";
    for(int i=0;i<2;i++)free(cut[I]);

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:52:34: error: 'I' was not declared in this scope
   52 |     for(int i=0;i<2;i++)free(cut[I]);
      |                                  ^
Language: C++

#include <iostream>
#include <cstdio>
#include <cstring>
#include <cstdlib>
#include <algorithm>
using namespace std;
struct dim{
    int x,y;
}a[100],b[100];
bool cmp(dim a,dim b){
    if(a.x!=b.x) return a.x<b.x;
    else return a.y<b.y;
}
int main()
{
    int n,i,ans=0,j;
    scanf("%d",&n);
    for(i=0;i<n;i++){
        scanf("%d %d",&a[i].x,&a[i].y);
    }
    for(i=0;i<n;i++){
        scanf("%d %d",&b[i].x,&b[i].y);
    }
    sort(a,a+n,cmp);sort(b,b+n,cmp);
    for(i=0;i<n;i++){
            for(j=0;j<n;j++){
        if(a[i].x<b[j].x&&a[i].y<b[j].y&&a[i].x!=-1&&a[i].y!=-1&&b[j].x!=-1&&b[j].y!=-1){
            ans++;a[i].x=-1,a[i].y=-1,b[j].x=-1,b[j].y=-1;break;
        }
            }
    }
    printf("%d\n",ans);
    return 0;

Compiler output:
a.cc: In function 'int main()':
a.cc:33:14: error: expected '}' at end of input
   33 |     return 0;
      |              ^
a.cc:15:1: note: to match this '{'
   15 | {
      | ^
Language: Java


import com.sun.tools.javac.util.Pair;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Scanner;



public class Main {

  static Scanner sc = new Scanner(System.in);

  static List<Pair<Integer, Integer>> red = new ArrayList<>();
  static List<Pair<Integer, Integer>> blue = new ArrayList<>();
  static int n;

  public static void main(String[] args) {
    n = sc.nextInt();
    red = new ArrayList<>();
    blue = new ArrayList<>();
    for (int i = 0; i < n; i++) {
      int x = sc.nextInt();
      int y = sc.nextInt();
      red.add(new Pair<>(x, y));
    }
    for (int i = 0; i < n; i++) {
      int x = sc.nextInt();
      int y = sc.nextInt();
      blue.add(new Pair<>(x, y));
    }
    Collections.sort(red, new Comparator<Pair<Integer, Integer>>() {
      @Override public int compare(Pair<Integer, Integer> o1, Pair<Integer, Integer> o2) {
        return o1.getKey() - o2.getKey();
      }
    });
    Collections.sort(blue, new Comparator<Pair<Integer, Integer>>() {
      @Override public int compare(Pair<Integer, Integer> o1, Pair<Integer, Integer> o2) {
        return o1.getKey() - o2.getKey();
      }
    });

    int answer = 0;
    answer = search(0, 0, answer);
    System.out.println(answer);
  }

  private static int search(int i, int j, int answer) {
    if (i == n || j == n) {
      return answer;
    }
    if ((red.get(i).getKey() < blue.get(j).getKey()) && (red.get(i).getValue() < blue.get(j)
      .getValue())) {
      answer++;
      i++;
      j++;
      return search(i, j, answer);
    } else {
      return Math.max(search(i + 1, j, answer), search(i, j + 1, answer));
    }
  }
}


Compiler output:
Main.java:2: error: package com.sun.tools.javac.util is not visible
import com.sun.tools.javac.util.Pair;
                          ^
  (package com.sun.tools.javac.util is declared in module jdk.compiler, which does not export it to the unnamed module)
1 error
Language: C++

#include <iostream>
#include <vector>

using namespace std;


int V;
vector<int> G[101];
int match[101];
bool used[101];

void add_edge(int u, int v) {
  G[u].push_back(v);
  G[v].push_back(u);
}

bool dfs(int v){
  used[v] = true;
  for (int i=0;i<G[v].size();i++) {
    int u = G[v][i];
    int w = match[u];
    if (w < 0 || (!used[w] && dfs(w))) {
      match[v] = u;
      match[u] = v;
      return true;
    }
  }
  return false;
}

int main(){
  int rx[101], ry[101], bx[101], by[101];
  cin >> V;
  for (int i=0;i<V;i++) {
    cin >> rx[i] >> ry[i];
  }
  for (int i=0;i<V;i++) {
    cin >> bx[i] >> by[i];    
  }
  for (int i=0;i<V;i++) {
    for (int j=0;j<V;j++) {
      if (rx[i] < bx[j] && ry[i] < by[j]) {
	add_edge(i, V+j);
      }
    }
  }
  
  int res = 0;
  memset(match, -1, sizeof(match));
  for (int v=0;v<(2*V);v++) {
    if (match[v] < 0) {
      memset(used, 0, sizeof(used));
      if (dfs(v)) {
	res++;
      }
    }
  }
  cout << res << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:49:3: error: 'memset' was not declared in this scope
   49 |   memset(match, -1, sizeof(match));
      |   ^~~~~~
a.cc:3:1: note: 'memset' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    2 | #include <vector>
  +++ |+#include <cstring>
    3 |
Language: C++

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

using namespace std;

vector<pair<int, int> > red;
vector<pair<int, int> > blue;
vector<vector<int> > possible_red_index;

int main(int argc, char *argv[])
{
  int n;
  cin >> n;
  for(int i = 0; i < n; i++){
    int x, y;
    cin >> x >> y;
    red.push_back(make_pair(x, y));
  }
  for(int i = 0; i < n; i++){
    int x, y;
    cin >> x >> y;
    blue.push_back(make_pair(x, y));
    possible_red_index.push_back(vector<int>());
    for(int k = 0; k < n; k++){
      if(red[k].first < x && red[k].second < y){
        possible_red_index[i].push_back(k);
      }
    }
  }
  int updated = 1;
  int count = 0;
  while(updated){
    updated = 0;
    for(int s = 1; s <= 100; s++){
      for(int i = 0; i < n; i++){
        if(possible_red_index[i].size() == s){
          int ri = possible_red_index[i][0];
          for(int k = 0; k < n; k++){
            vector<int>& vec = possible_red_index[k];
            vec.erase(remove(vec.begin(), vec.end(), ri), vec.end());
          }
          possible_red_index[i].clear();
          count++;
          updated = 1;
          break;
        }
      }
      if(updated) break;
    }
  }
  
  cout << count << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main(int, char**)':
a.cc:41:39: error: cannot convert 'std::vector<int>::iterator' to 'const char*'
   41 |             vec.erase(remove(vec.begin(), vec.end(), ri), vec.end());
      |                              ~~~~~~~~~^~
      |                                       |
      |                                       std::vector<int>::iterator
In file included from /usr/include/c++/14/cstdio:42,
                 from /usr/include/c++/14/ext/string_conversions.h:45,
                 from /usr/include/c++/14/bits/basic_string.h:4154,
                 from /usr/include/c++/14/string:54,
                 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/stdio.h:158:32: note:   initializing argument 1 of 'int remove(const char*)'
  158 | extern int remove (const char *__filename) __THROW;
      |                    ~~~~~~~~~~~~^~~~~~~~~~
Language: C++

#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <queue>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>
#include <iterator>
#include <unordered_map>
#include <unordered_set>
#include <tuple> 
#include <memory>

using namespace std;

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

	struct Point
	{
		Point(int x, int y) {
			this->x = x; this->y = y; isPaired = false;
		}
		int x;
		int y;
		bool isPaired;
	};

	vector<Point> redPoints;
	for (int i = 0; i < N; i++) {
		int x, y;
		cin >> x >> y;
		redPoints.emplace_back(Point(x, y));
	}

	//xだけソート
	sort(redPoints.begin(), redPoints.end(), [](const Point& a, const Point& b) {
		return a.x > b.x;
	});

	vector<Point> bluePoints;
	for (int i = 0; i < N; i++) {
		int x, y;
		cin >> x >> y;
		bluePoints.emplace_back(Point(x, y));
	}

	//xだけソート
	sort(bluePoints.begin(), bluePoints.end(), [](const Point& a, const Point& b) {
		return a.x > b.x;
	});

	//sort(bluePoints.begin(), bluePoints.end(), [](const Point& a, const Point& b) {
	//	return a.y < b.y;
	//});


	int num = 0;

	for (const auto& redPoint : redPoints) {

		int diff = INT_MAX;
		Point* p = &(*bluePoints.begin());

		for (auto& bluePoint : bluePoints) {
			if (redPoint.x > bluePoint.x) {
				break;
			}

			if (bluePoint.isPaired) {
				continue;
			}

			if (redPoint.x > bluePoint.x || redPoint.y > bluePoint.y) {
				continue;
			}

			int nowDiff = abs(redPoint.x - bluePoint.x) + abs(redPoint.y - bluePoint.y);

			if (diff > nowDiff) {
				diff = nowDiff;
				p = &bluePoint;
			}
		}

		if (diff != INT_MAX) {
			p->isPaired = true;
			num++;
		}

		//if (redPoint.y <= bluePoint.y) {
		//	num++;
		//	bluePoint.isPaired = true;
		//	break;
		//}
	}


	//for (auto point : redPoints)
	//{
	//	cout << point.x << " " << point.y << " " << point.isPaired << endl;
	//}

	//cout << endl;

	//for (auto point : bluePoints)
	//{
	//	cout << point.x << " " << point.y << " " << point.isPaired << endl;
	//}

	cout << num;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:78:28: error: 'INT_MAX' was not declared in this scope
   78 |                 int diff = INT_MAX;
      |                            ^~~~~~~
a.cc:28:1: note: 'INT_MAX' is defined in header '<climits>'; this is probably fixable by adding '#include <climits>'
   27 | #include <memory>
  +++ |+#include <climits>
   28 |
Language: C++

#include<bits/stdc++.h>
using namespace std;
const int MAX_N=1e2+10;
bool bbb[MAX_N], ccc[MAX_N][MAX_N];
int aaa[MAX_N];
bool fnd(int x,int n) {
    for(int j=1;j<=n;j++) {
        if (ccc[x][j]&&!bbb[j]) {
            bbb[j]=true;
            if (aaa[j]==0 || fnd(aaa[j],n)) {
                aaa[j]=x;
                return true;
            }
        }
    }
    return false;
}
int solve(int m, int n) {
    int ans=0;
    for (int i=1;i<=m;i++) {
        memset(bbb,false,sizeof(bbb));
        if (fnd(i, n)) ans++;
    }
    return ans;
}
int main() {
    int n,a,b,x[105],y[105];
    scanf("%d",&n);
    for (int i=1;i<=n;i++) {
        scanf("%d%d",&x[i],&y[i]);
    }
    for (int i=1;i<=n;i++) {
        scanf("%d%d",&a,&b);
        for (int j=1;j<=n;j++) {
            if (x[j]<a&&y[j]<b)ccc[j][i]=true;
        }
    }
    printf("%d\n",solve(n,n));
    return 0;

Compiler output:
a.cc: In function 'int main()':
a.cc:39:14: error: expected '}' at end of input
   39 |     return 0;
      |              ^
a.cc:26:12: note: to match this '{'
   26 | int main() {
      |            ^
Language: C++

#include <iostream>
#include <vector>

using namespace std;

int main() {
    int n;
    cin >> n;
    
    vector<pair<pair<int, int>, int>> v;
    vector<int> used(2 * n, 0);
    for (int i = 0; i < n; ++i) {
        int x, y;
        cin >> x >> y;
        
        v.push_back({{x, y}, 1});
    }
    
    for (int i = 0; i < n; ++i) {
        int x, y;
        cin >> x >> y;
        
        v.push_back({{x, y}, 2});
    }

    sort(v.begin(), v.end());
    int ans = 0;
    for (int i = 0; i < 2 * n; ++i) {
        if (v[i].second == 1) {
            int now = -1;
            for (int j = i + 1; j < 2 * n; ++j) {
                if (v[j].second == 2 && used[j] == 0) {
                    if ((v[j].first.second > v[i].first.second) && (now == -1 || v[j].first.second < v[now].first.second)) {
                        now = j;
                    }
                }
            }
            if (now != -1) {
                ans++;
                used[now] = 1;
            }
        }
    }
    cout << ans << endl;
    
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:26:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   26 |     sort(v.begin(), v.end());
      |     ^~~~
      |     short
Language: C++

#include <iostream>
using namespace std;

struct point{
	int x;
	int y;
	point(int x, int y): x(x), y(y){}
	bool operator< (const point &p){
		return x < p.x && y < p.y;
	}
};

int main(){
	int n;
	point a[110];
	point b[110];
	cin >> n;
	int inp, ut;
	for(int i = 0; i < n; i++){
		cin >> inp >> ut;
		a[i] = point(inp, ut);
	}
	for(int i = 0; i < n; i++){
		cin >> inp >> ut;
		b[i] = point(inp, ut);
	}

	int ans = 0;
	for(int j = 0; j < n; j++){
	for(int i = 0; i < n; i++){
		if(a[j] < b[i]){
			ans++;
			break;
		}
	}
	}
	
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:20: error: no matching function for call to 'point::point()'
   15 |         point a[110];
      |                    ^
a.cc:7:9: note: candidate: 'point::point(int, int)'
    7 |         point(int x, int y): x(x), y(y){}
      |         ^~~~~
a.cc:7:9: note:   candidate expects 2 arguments, 0 provided
a.cc:4:8: note: candidate: 'constexpr point::point(const point&)'
    4 | struct point{
      |        ^~~~~
a.cc:4:8: note:   candidate expects 1 argument, 0 provided
a.cc:4:8: note: candidate: 'constexpr point::point(point&&)'
a.cc:4:8: note:   candidate expects 1 argument, 0 provided
a.cc:16:20: error: no matching function for call to 'point::point()'
   16 |         point b[110];
      |                    ^
a.cc:7:9: note: candidate: 'point::point(int, int)'
    7 |         point(int x, int y): x(x), y(y){}
      |         ^~~~~
a.cc:7:9: note:   candidate expects 2 arguments, 0 provided
a.cc:4:8: note: candidate: 'constexpr point::point(const point&)'
    4 | struct point{
      |        ^~~~~
a.cc:4:8: note:   candidate expects 1 argument, 0 provided
a.cc:4:8: note: candidate: 'constexpr point::point(point&&)'
a.cc:4:8: note:   candidate expects 1 argument, 0 provided
Language: C++

#include<iostream>
#include<map>
#include<string>
#include<algorithm>
using namespace std;
struct node{
	int x,y;
}a[100],b[100];
int cmp(node l,node r){
	if(l.x+l.y==r.x+r.y) {
		if(l.x==r.x) return l.y<b.y;
		else return l.x<r.x;
	}
	return l.x+l.y<r.x+r.y;
}
int main(){
	int n;
	cin>>n;
	for(int i=0;i<n;i++){
		cin>>a[i].x>>a[i].y;
	}
	for(int i=0;i<n;i++){
		cin>>b[i].x>>b[i].y;
	}
	sort(a,a+n,cmp);
	sort(b,b+n,cmp);
	int ans=0;
	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++){
			if(a[i].x<b[i].x && a[j].y<b[j].y){
				ans++;
				a[i].x=a[i].y=b[j].x=b[j].y=210;
			}
		}
	}
	cout<<ans<<endl;
	return 0;
}

Compiler output:
a.cc: In function 'int cmp(node, node)':
a.cc:11:43: error: request for member 'y' in 'b', which is of non-class type 'node [100]'
   11 |                 if(l.x==r.x) return l.y<b.y;
      |                                           ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef struct node
{
	int x,y;
}NODE,*PNODE;
int main()
{
    int n,s;
    NODE a[100],b[100];
    scanf("%d",&n);
    for(i=0;i<n;i++)
    {
		scanf("%d%d",&a[i].x,&b[i].y);
	}
	for(i=0;i<n;i++)
    {
		scanf("%d%d",&b[i].x,&b[i].y);
		if(a[i].x<b[i].x&&a[i].y<b[i].y)
			s++;
	}
	printf("%d",s);
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:9: error: 'i' was not declared in this scope
   12 |     for(i=0;i<n;i++)
      |         ^
a.cc:16:13: error: 'i' was not declared in this scope
   16 |         for(i=0;i<n;i++)
      |             ^
Language: C++

include<iostream>
using namespace std;
int main(){
    int N,cnt=0,pre=-1,i=0,j=0,k=0,dis=114514;
    cin>>N;
    int RX[N],RY[N],BX[N],BY[N],CR[N];

    for(i=0;i<N;i++)cin>>RX[i]>>RY[i];
    for(i=0;i<N;i++)cin>>BX[i]>>BY[i];
    for(i=0;i<N;i++){
        CR[i]=0;
    }
    
    for(i=0;i<N;i++){
        for(j=0;j<N;j++){
            if(RX[j]<BX[i]&&RY[j]<BY[i]){
                for(k=0;k<N;k++){
                    if(BY[i]-RY[j]+BX[i]-RX[j]>BY[k]-RY[j]+BX[k]-RX[j]){
                        
                          if(dis>(BY[i]-RY[j]+BX[i]-RX[j]) && CR[j]==0){
                            dis=BY[i]-RY[j]+BX[i]-RX[j];
                            pre=j;
                           }
                           
                    }
                }
              
            }
        }
        if(pre!=-1){
            cnt++;
            CR[pre]=1;
        }
        pre=-1;
        dis=114514;
    }
    
    cout<<cnt<<endl;
    
    return 0;
}

Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include<iostream>
      | ^~~~~~~
a.cc: In function 'int main()':
a.cc:5:5: error: 'cin' was not declared in this scope
    5 |     cin>>N;
      |     ^~~
a.cc:38:5: error: 'cout' was not declared in this scope
   38 |     cout<<cnt<<endl;
      |     ^~~~
a.cc:38:16: error: 'endl' was not declared in this scope
   38 |     cout<<cnt<<endl;
      |                ^~~~
Language: C++

#include <map>
#include <list>
#include <cmath>
#include <cstdio>
#include <cstring>
#include <iostream>
#include <algorithm>
#define fast ios::sync_with_stdio(0),cin.tie(0),cout.tie(0)
using namespace std;
int n,sum;
struct node
{
	int a;
	int b;
	bool ok;
}a[105],b[105];
int main()
{
	fast;
	cin>>n;
	for (int i=1;i<=n;i++)
	   cin>>a[i].a>>a[i].b;
	for (int i=1;i<=n;i++)
	   cin>>b[i].a>>b[i].b;
	   
	for (int i=1;i<=n;i++)
	   for (int j=1;j<=n;j++)
	      if (a[i].a<b[j].a && a[i].b<b[j].b && !a[i].ok && !b[j].ok)
	      {
	      	  sum++;
	      	  a[i].ok=true;
	      	  b[j].ok=true;
	      }
	cout<<sum;    
	return 0;
}#include <map>
#include <list>
#include <cmath>
#include <cstdio>
#include <cstring>
#include <iostream>
#include <algorithm>
#define fast ios::sync_with_stdio(0),cin.tie(0),cout.tie(0)
using namespace std;
int n,sum;
struct node
{
	int a;
	int b;
	bool ok;
}a[105],b[105];
int main()
{
	fast;
	cin>>n;
	for (int i=1;i<=n;i++)
	   cin>>a[i].a>>a[i].b;
	for (int i=1;i<=n;i++)
	   cin>>b[i].a>>b[i].b;
	   
	for (int i=1;i<=n;i++)
	   for (int j=1;j<=n;j++)
	      if (a[i].a<b[j].a && a[i].b<b[j].b && !a[i].ok && !b[j].ok)
	      {
	      	  sum++;
	      	  a[i].ok=true;
	      	  b[j].ok=true;
	      }
	cout<<sum;    
	return 0;
}

Compiler output:
a.cc:36:2: error: stray '#' in program
   36 | }#include <map>
      |  ^
a.cc:36:3: error: 'include' does not name a type
   36 | }#include <map>
      |   ^~~~~~~
a.cc:45:5: error: redefinition of 'int n'
   45 | int n,sum;
      |     ^
a.cc:10:5: note: 'int n' previously declared here
   10 | int n,sum;
      |     ^
a.cc:45:7: error: redefinition of 'int sum'
   45 | int n,sum;
      |       ^~~
a.cc:10:7: note: 'int sum' previously declared here
   10 | int n,sum;
      |       ^~~
a.cc:46:8: error: redefinition of 'struct node'
   46 | struct node
      |        ^~~~
a.cc:11:8: note: previous definition of 'struct node'
   11 | struct node
      |        ^~~~
a.cc:51:2: error: conflicting declaration 'int a [105]'
   51 | }a[105],b[105];
      |  ^
a.cc:16:2: note: previous declaration as 'node a [105]'
   16 | }a[105],b[105];
      |  ^
a.cc:51:9: error: conflicting declaration 'int b [105]'
   51 | }a[105],b[105];
      |         ^
a.cc:16:9: note: previous declaration as 'node b [105]'
   16 | }a[105],b[105];
      |         ^
a.cc:52:5: error: redefinition of 'int main()'
   52 | int main()
      |     ^~~~
a.cc:17:5: note: 'int main()' previously defined here
   17 | int main()
      |     ^~~~
Language: C++

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

using namespace std;

int main() {
    vector<pair<int, int>> reds, blues;
    int N;
    cin >> N;
    vector<bool> used(N);
    for (int i = 0; i < N; ++i) {
        int x, y;
        cin >> x >> y;
        reds.emplace_back(x, y);
    }
    for (int i = 0; i < N; ++i) {
        int x, y;
        cin >> x >> y;
        blues.emplace_back(x, y);
    }
    sort(reds.begin(), reds.end());
    sort(blues.begin(), blues.end());

    int answer = 0;
    for (auto&& red : reds) {
        for (int i = 0; i < N; i++) {
            if (used[i]) {
                continue;
            }
            auto const& b = blues[i];
            if (red.first < b.first && red.second < b.second) {
                used[i] = true;
                answer++;
                break;
            }
        }
    }
    cout << answer << '\n';
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:25:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   25 |     sort(reds.begin(), reds.end());
      |     ^~~~
      |     short
Language: C++

#include <iostream>
#include <vector>

using namespace std;

int main(void){
  int N;
  vector<int> ax,ay;
  vector<int> bx,by;
  
  for(int i = 0; i < N; i++){
    cin >> ax[i];
    cin >> ay[i];
  }
  
  for(int i = 0; i < N; i++){
    cin >> bx[i];
    cin >> by[i];
  }
  
  //順列保管用配列
  vector<int> perm;
  int max_pair = 0;
  for(int i = 0; i < N; i++)parm.push_back(i);
  
  for(int j = 0; j < N; j++){
    for(int i = N - 1; j < i; i--){
	  //比較してペア数を計算
      int pair = 0;
      for(int k = 0; k < N; k++){
        if(ax[k] < bx[parm[k]] && ay[k] < by[parm[k]])pair++;
      }
      
      if( pair > max_pair )max_pair = pair;      
      swap(parm[i], parm[i-1]);      
    }
  }
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:29: error: 'parm' was not declared in this scope; did you mean 'perm'?
   24 |   for(int i = 0; i < N; i++)parm.push_back(i);
      |                             ^~~~
      |                             perm
a.cc:31:23: error: 'parm' was not declared in this scope; did you mean 'perm'?
   31 |         if(ax[k] < bx[parm[k]] && ay[k] < by[parm[k]])pair++;
      |                       ^~~~
      |                       perm
a.cc:35:12: error: 'parm' was not declared in this scope; did you mean 'perm'?
   35 |       swap(parm[i], parm[i-1]);
      |            ^~~~
      |            perm
Language: C++



#include <iostream>
#include <vector>
namespace ABC091_D {


	signed main() {
		int n;
		std::cin >> n;
		std::vector<int> a, b;
		a.reserve(n);
		b.reserve(n);
		for (int i = 0; i < n; ++i) { int t; std::cin >> t; a.emplace_back(t); }
		for (int i = 0; i < n; ++i) { int t; std::cin >> t; b.emplace_back(t); }

		int ans = 0;
		for (int i = 0; i < n; ++i)for (int j = 0; j < n; ++j) {
			ans ^= (a[i] + b[j]);
		}
		std::cout << ans << std::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 <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(n);i++)
using namespace std;
using ll = long long;
using P = pair<int,int>;
int N;
vector<int> a, b;

int main() {
    cin >> N;
    a.resize(N); for (int i = 0; i < N; ++i) cin >> a[i];
    b.resize(N); for (int i = 0; i < N; ++i) cin >> b[i];
    int res = 0;
    for (int digit = 29; digit >= 0; --digit) {
        int bekihigh = 1<<(digit+1), bekilow = 1<<digit;
        for (int i = 0; i < N; ++i) a[i] %= bekihigh, b[i] %= bekihigh;
        sort(b.begin(), b.end());
        long long num = 0;
        for (int i = 0; i < N; ++i) {
            int add = 0;
            if (bekilow - a[i] >= 0) {
                add += lower_bound(b.begin(), b.end(), bekihigh-a[i])
                        - lower_bound(b.begin(), b.end(), bekilow-a[i]);
                
            }
            else {
                /add += lower_bound(b.begin(), b.end(), bekihigh-a[i]) - b.begin();
                add += lower_bound(b.begin(), b.end(), bekihigh)
                        - lower_bound(b.begin(), b.end(), bekihigh + bekilow - a[i]);
            }
            num += add;
        }
        if (num & 1) res += bekilow;
    }
    cout << res << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:27:17: error: expected primary-expression before '/' token
   27 |                 /add += lower_bound(b.begin(), b.end(), bekihigh-a[i]) - b.begin();
      |                 ^
Language: C++

#include<math.h>
#include<map>
#include<iostream>
#include <algorithm>
#include <string>
#include<vector>
#include<array>
#include<tuple>
#include<queue>
#include<stack>
#include<iomanip>
#include<bitset>
//AtCoderC++.cpp

using namespace std;

vector<int> _prime;
vector<int> build_prime_table(int max) {
	vector<int> table = vector<int>(max + 1, -1);
	table[0] = 0;
	table[1] = 0;
	table[2] = 1;
	for (int i = 3; i <= max; i++) {
		if (i % 2 == 0) { table[i] = 0; continue; }
		if (table[i] != -1)continue;
		table[i] = 1;
		for (int j = i + i; j <= max; j += i) {
			table[j] = 0;
		}
	}
	return table;
}

inline int ceileing(int a, int b) {
	return a % b == 0 ? a / b : a / b + 1;
}


vector<long long> comb = vector<long long>(100 * 100, -1);

long long combination(long long n, long long r) {
	if (n == 1 || n == 0)return 1;
	if (n == r)	return 1;
	else if (r == 0)return 1;
	else if (r == 1)return n;
	else if (comb[100 * (n - 1) + (r - 1)] != -1) return comb[100 * (n - 1) + (r - 1)];
	else {
		auto res = combination(n - 1, r - 1) + combination(n - 1, r);
		comb[100 * (n - 1) + (r - 1)] = res;
		return res;
	}
}

inline int count(int b, int N, int K) {
	int res = 0;
}

int main() {
	int N; cin >> N;
	auto as = vector<unsigned long>(N);
	auto bs = vector<unsigned long>(N);
	for (size_t i = 0; i < N; i++)cin >> as[i];
	for (size_t i = 0; i < N; i++)cin >> bs[i];
	for (size_t i = 0; i < N; i++) {
		for (size_t j = 0; j < N; j++) {
			cout << as[i] + bs[j] << endl;
		}
	}


Compiler output:
a.cc: In function 'int count(int, int, int)':
a.cc:56:1: warning: no return statement in function returning non-void [-Wreturn-type]
   56 | }
      | ^
a.cc: In function 'int main()':
a.cc:68:10: error: expected '}' at end of input
   68 |         }
      |          ^
a.cc:58:12: note: to match this '{'
   58 | int main() {
      |            ^
Language: C++

//#include <cstdio>
//#include <cmath>
//#include <iostream>
//#include <sstream>
//#include <string>
//#include <vector>
//#include <map>
//#include <queue>
//#include <algorithm>
//
//#ifdef _DEBUG
//#define DMP(x) cerr << #x << ": " << x << "\n"
//#else
//#define DMP(x) ((void)0)
//#endif
//
//using namespace std;
//using lint = long long;
//
//#pragma GCC optimize ("-O3", "unroll-loops")
//const int nmax = 204800, block = 4096, unrl = 8;
//int a[nmax], b[nmax];
//
//int main() {
//
//	int N;
//	scanf("%d", &N);
//	for (int i = 0; i < N; i++) scanf("%d", &a[i]);
//	for (int i = 0; i < N; i++) scanf("%d", &b[i]);
//
//	int ans = 0;
//	for (int i = 0; i + unrl <= N; i += unrl) {
//		for (int j = 0; j + block <= N; j += block) {
//			for (int k = j; k < block + j; k++) {
//
//				ans ^= (a[i + 0] + b[k]) ^ (a[i + 1] + b[k]);
//				ans ^= (a[i + 2] + b[k]) ^ (a[i + 3] + b[k]);
//				ans ^= (a[i + 4] + b[k]) ^ (a[i + 5] + b[k]);
//				ans ^= (a[i + 6] + b[k]) ^ (a[i + 7] + b[k]);
//
//			}
//		}
//	}
//
//	for (int i = 0; i < N / unrl * unrl; i++) {
//		for (int j = N / block * block; j < N; j++) {
//			ans ^= a[i] + b[j];
//		}
//	}	
//	for (int i = N / unrl * unrl; i < N; i++) {
//		for (int j = 0; j < N; j++) {
//			ans ^= a[i] + b[j];
//		}
//	}
//
//	printf("%d\n", ans);
//
//	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 <cstdio>
#include <cmath>
#include <iostream>
#include <sstream>
#include <string>
#include <vector>
#include <map>
#include <queue>
#include <algorithm>

#ifdef _DEBUG
#define DMP(x) cerr << #x << ": " << x << "\n"
#else
#define DMP(x) ((void)0)
#endif

using namespace std;
using lint = long long;

#pragma GCC optimize ("-O3", "unroll-loops")
const int nmax = 204800, block = 4096, unrl = 8;
int a[nmax], b[nmax];

int main() {

	int N;
	scanf_s("%d", &N);
	for (int i = 0; i < N; i++) scanf_s("%d", &a[i]);
	for (int i = 0; i < N; i++) scanf_s("%d", &b[i]);

	int ans = 0;
	for (int i = 0; i < nmax; i += unrl) {
		for (int j = 0; j < nmax; j += block) {
			for (int k = j; k < block + j; k++) {
				if (k < N) {
					ans ^= (a[i + 0] + b[k]) ^ (a[i + 1] + b[k]) ^ (a[i + 2] + b[k]) ^ (a[i + 3] + b[k]);
					ans ^= (a[i + 4] + b[k]) ^ (a[i + 5] + b[k]) ^ (a[i + 6] + b[k]) ^ (a[i + 7] + b[k]);
				}
			}
		}
	}

	printf("%d\n", ans);

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:27:9: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
   27 |         scanf_s("%d", &N);
      |         ^~~~~~~
      |         scanf
Language: C++

#ifdef _DEBUG
#include "MyLib.h"
#else
#define main_D main
#include "bits/stdc++.h" 
#include <regex>
#define _USE_MATH_DEFINES
#include <math.h>
#define FOR(i,s,e) for (int i = int(s); i < int(e); ++i)
#define REP(i,e) FOR(i,0,e)
#define INF (INT_MAX/2)
#define EPS (1.0e-8)
#define LINF (LLONG_MAX/2)
const int MGN = 8;
const int ARY_SZ_MAX = 10000000;
using namespace std;
using ll = long long; using ull = unsigned long long;
using vi = vector<int>; using vvi = vector<vi>; using vvvi = vector<vvi>;
using vb = vector<bool>; using vvb = vector<vb>; using vvvb = vector<vvb>;
using vl = vector<ll>; using vvl = vector<vl>;
using vd = vector<double>; using vs = vector<string>;
using pii = pair<int, int>; using pll = pair<ll, ll>;
using psi = pair<string, int>;
// functions
int bs_cnt_greater(vi& A, const int X, bool equal) {
    if (equal) return A.end() - lower_bound(A.begin(), A.end(), X);
    else return A.end() - upper_bound(A.begin(), A.end(), X);    
}
#endif


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

    int N; cin >> N;
    vi A(N); REP(i, N) cin >> A[i];
    vi B(N); REP(i, N) cin >> B[i];

    int ans = 0;
    REP(k, 29) {
        const int T = 0x01 << k;

        vi a, b;
        REP(i, N) a.push_back(A[i] % (2 * T));
        REP(i, N) b.push_back(B[i] % (2 * T));
        sort(b.begin(), b.end());

        int cnt = 0;
        REP(i,N) {
            cnt += bs_cnt_less(b, 2 * T - a[i], false) - bs_cnt_less(b, T - a[i], false);
            cnt += bs_cnt_less(b, 4 * T - a[i], false) - bs_cnt_less(b, 3 * T - a[i], false);
        }

        if (cnt % 2 == 1) ans |= 0x01 << k;
    }

    cout << ans << endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:51:20: error: 'bs_cnt_less' was not declared in this scope
   51 |             cnt += bs_cnt_less(b, 2 * T - a[i], false) - bs_cnt_less(b, T - a[i], false);
      |                    ^~~~~~~~~~~
Language: C++

#include <algorithm>
#include <cstdio>
#include <iostream>
#include <cfloat>
#include <climits>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <queue>
#include <sstream>
#include <stack>
#include <time.h>
#include <vector>
#include <complex>
#include <map>
#include <set>
#include <iomanip>
#include <math.h>
#include <stdlib.h>
#include <list>
#include <utility>
#include <memory>
#include <cstring>
#include <fstream>
#include <numeric>
#include <assert.h>
#include <bitset>
#include <ios> 
#include <bits/stdc++.h>
#pragma GCC optimize(1)
#pragma GCC optimize(2)
#pragma G++ optimize(3)
#pragma G++ optimize(4)
#pragma G++ optimize(5)
#pragma G++ optimize(6)
#pragma G++ optimize(7)
#pragma G++ optimize(8)
#pragma GCC optimize(9)
using namespace std;
typedef long long ll;
int n;
vector <ll> v[29]; 
ll ans=0;
int main(){
	n=read();
	for (int i=0;i<n;i++){
		scanf ("%lld",&x);
		for (int j=0;j<29;j++)
			v[j].push_back(x%(1ll<<(j+1)));
	}
	for (int i=0;i<29;i++) sort(v[i].begin(),v[i].end());
	for (int i=0;i<n;i++){
		scanf ("%lld",&x);
		for (int j=0;j<29;j++){
			int t=x%(1ll<<(j+1));
			int xzy=lower_bound(v[j].begin(),v[j].end(),(1ll<<j)-t)-v[j].begin();
			int ctc=upper_bound(v[j].begin(),v[j].end(),(1ll<<(j+1))-t-1)-v[j].begin(); 
			int hhy=lower_bound(v[j].begin(),v[j].end(),(1<<j)*3-t)-v[j].begin(); 
			if ((ctc-xzy+n-hhy)%2) ans^=(1<<j);
		}
	}
	printf("%lld",ans);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:45:15: error: too few arguments to function 'ssize_t read(int, void*, size_t)'
   45 |         n=read();
      |           ~~~~^~
In file included from /usr/include/x86_64-linux-gnu/bits/sigstksz.h:24,
                 from /usr/include/signal.h:328,
                 from /usr/include/c++/14/csignal:42,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:116,
                 from a.cc:29:
/usr/include/unistd.h:371:16: note: declared here
  371 | extern ssize_t read (int __fd, void *__buf, size_t __nbytes) __wur
      |                ^~~~
a.cc:47:32: error: 'x' was not declared in this scope
   47 |                 scanf ("%lld",&x);
      |                                ^
a.cc:53:32: error: 'x' was not declared in this scope
   53 |                 scanf ("%lld",&x);
      |                                ^
Language: C++

#include <algorithm>
#include <cstdio>
#include <iostream>
#include <cfloat>
#include <climits>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <queue>
#include <sstream>
#include <stack>
#include <time.h>
#include <vector>
#include <complex>
#include <map>
#include <set>
#include <iomanip>
#include <math.h>
#include <stdlib.h>
#include <list>
#include <utility>
#include <memory>
#include <cstring>
#include <fstream>
#include <numeric>
#include <assert.h>
#include <bitset>
#include <ios> 
#include <bits/stdc++.h>
#pragma GCC optimize(1)
#pragma GCC optimize(2)
#pragma G++ optimize(3)
#pragma G++ optimize(4)
#pragma G++ optimize(5)
#pragma G++ optimize(6)
#pragma G++ optimize(7)
#pragma G++ optimize(8)
#pragma GCC optimize(9)
using namespace std;
typedef long long ll;
int n;
vector <ll> v[29]; 
int ans;
int main(){
	n=read();
	for (int i=0;i<n;i++){
		scanf ("%lld",&x);
		for (int j=0;j<29;j++)
			v[j].push_back(x%(1ll<<(j+1)));
	}
	for (int i=0;i<29;i++) sort(v[i].begin(),v[i].end());
	for (int i=0;i<n;i++){
		scanf ("%lld",&x);
		for (int j=0;j<29;j++){
			int t=x%(1ll<<(j+1));
			int xzy=lower_bound(v[j].begin(),v[j].end(),(1ll<<j)-t)-v[j].begin();
			int ctc=upper_bound(v[j].begin(),v[j].end(),(1ll<<(j+1))-t-1)-v[j].begin(); 
			int hhy=lower_bound(v[j].begin(),v[j].end(),(1<<j)*3-t)-v[j].begin(); 
			if ((ctc-xzy+n-hhy)%2) ans^=(1<<j);
		}
	}
	printf("%lld",ans);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:45:15: error: too few arguments to function 'ssize_t read(int, void*, size_t)'
   45 |         n=read();
      |           ~~~~^~
In file included from /usr/include/x86_64-linux-gnu/bits/sigstksz.h:24,
                 from /usr/include/signal.h:328,
                 from /usr/include/c++/14/csignal:42,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:116,
                 from a.cc:29:
/usr/include/unistd.h:371:16: note: declared here
  371 | extern ssize_t read (int __fd, void *__buf, size_t __nbytes) __wur
      |                ^~~~
a.cc:47:32: error: 'x' was not declared in this scope
   47 |                 scanf ("%lld",&x);
      |                                ^
a.cc:53:32: error: 'x' was not declared in this scope
   53 |                 scanf ("%lld",&x);
      |                                ^
Language: Java

import java.util.*;
public class ABC091_d {
    static int lowerBound(int a[], int v) {
        int l = 0, r = a.length - 1;
        while (r - l >= 0) {
            int c = (l + r) / 2;
            if (v <= a[c]) {
                r = c - 1;
            } else {
                l = c + 1;
            }
        }
        return l;
    }
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int A[] = new int[N], B[] = new int[N];
        for (int n = 0; n < N; n++) {
            A[n] = sc.nextInt();
        }
        for (int n = 0; n < N; n++) {
            B[n] = sc.nextInt();
        }
        int ans = 0;
        for (int k = 0; k < 30; k++) {
            int[] a = Arrays.copyOf(A, N);
            int[] b = Arrays.copyOf(B, N);
            for (int i = 0; i < N; i++) {
                a[i] &= (1 << (k + 1)) - 1;
                b[i] &= (1 << (k + 1)) - 1;
            }
            int count = 0;
            Arrays.sort(b);
            for (int i = 0; i < N; i++) {
                int k1 = lowerBound(b, (1 << k) - a[i]);
                int k2 = lowerBound(b, (1 << (k + 1)) - a[i]);
                count += k2 - k1;
                if (k >= 1) {
                    int k3 = lowerBound(b, (3 << k) - a[i]);
                    count += N - k3;
                }
                count %= 2;
            }
            if (count % 2 == 1) {
                ans |= 1 << k;
            }
        }
        System.out.println(ans);
        sc.close();
    }
}

Compiler output:
Main.java:2: error: class ABC091_d is public, should be declared in a file named ABC091_d.java
public class ABC091_d {
       ^
1 error
Language: C++

import bisect

def lower_bound(A: list, v: int) -> int:
    l, r = -1, len(A)
    while r - l > 1:
        m = (r + l) // 2
        if A[m] < v:
            l = m
        else:
            r = m
    return r


def count(A: list, a: int, b: int) -> int:
    l = bisect.bisect_left(A, a)
    u = bisect.bisect_left(A, b)
    # l = lower_bound(A, a)
    # u = lower_bound(A, b)
    return u - l


def two_sequences(N: int, A: list, B: list) -> int:
    BIT_LIM = 40

    res = 0
    for k in range(BIT_LIM):
        T = 1 << (k+1)
        sorted_B = sorted(b & (T-1) for b in B)
        num_kth_bit_is_1 = 0
        for ai in A:
            ai_mod = ai & (T-1)

            T = T >> 1
            num_kth_bit_is_1 += count(sorted_B, T - ai_mod, 2*T - ai_mod)
            num_kth_bit_is_1 += count(sorted_B, 3*T - ai_mod, 4*T - ai_mod)
            T = T << 1

        res = ((num_kth_bit_is_1 & 1) << k) | res

    return res


if __name__ == "__main__":
    N = int(input())
    A = [int(s) for s in input().split()]
    B = [int(s) for s in input().split()]
    ans = two_sequences(N, A, B)
    print(ans)


Compiler output:
a.cc:17:7: error: invalid preprocessing directive #l
   17 |     # l = lower_bound(A, a)
      |       ^
a.cc:18:7: error: invalid preprocessing directive #u
   18 |     # u = lower_bound(A, b)
      |       ^
a.cc:1:1: error: 'import' does not name a type
    1 | import bisect
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'