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

#include<bits/stdc++.h>
using namespace std;
#define rep(i, n) for(int i=0;i<n;i++)
#define rep0(i, b, s) for(int i=b;i<s;i++)
typedef long long ll;

ll f(ll A){
    if (A % 4 == 1) return 1;
    else if (A % 4 == 2) return (A ^ 1);
    else if (A % 4 == 3) return 0;
    else return A;
}

int main(){
    ll A, B;
    cin >> A >> B;

    cout << (f(max(0,A-1)) ^ f(B)) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:19: error: no matching function for call to 'max(int, ll)'
   18 |     cout << (f(max(0,A-1)) ^ f(B)) << endl;
      |                ~~~^~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h: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:18:19: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'll' {aka 'long long int'})
   18 |     cout << (f(max(0,A-1)) ^ f(B)) << 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:
/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:18:19: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   18 |     cout << (f(max(0,A-1)) ^ f(B)) << endl;
      |                ~~~^~~~~~~
Language: C++

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

ll f(ll a) {
    if (a % 4 == 0) return a;
    if (a % 4 == 1) return 1;
    if (a % 4 == 2) return a + 1;
    return 0;
}
int main()
{
    ll a, b;
    cin >> a >> b;
    cout << (f(b) ^ f(a - 1)) << endl;
}


Compiler output:
a.cc:5:1: error: 'll' does not name a type
    5 | ll f(ll a) {
      | ^~
a.cc: In function 'int main()':
a.cc:13:5: error: 'll' was not declared in this scope
   13 |     ll a, b;
      |     ^~
a.cc:14:12: error: 'a' was not declared in this scope
   14 |     cin >> a >> b;
      |            ^
a.cc:14:17: error: 'b' was not declared in this scope
   14 |     cin >> a >> b;
      |                 ^
a.cc:15:14: error: 'f' was not declared in this scope
   15 |     cout << (f(b) ^ f(a - 1)) << endl;
      |              ^
Language: C++

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

ll f(ll a) {
    if (a % 4 == 0) return a;
    if (a % 4 == 1) return 1;
    if (a % 4 == 2) return a + 1;
    return 0;
}
int main()
{
    ll a, b;
    cin >> a >> b;
    cout << (f(b) ^ f(a - 1)) << endl;
}


Compiler output:
a.cc:3:2: error: expected initializer before 'using'
    3 |  using namespace std;
      |  ^~~~~
a.cc:5:1: error: 'll' does not name a type
    5 | ll f(ll a) {
      | ^~
a.cc: In function 'int main()':
a.cc:13:5: error: 'll' was not declared in this scope
   13 |     ll a, b;
      |     ^~
a.cc:14:5: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
   14 |     cin >> a >> b;
      |     ^~~
      |     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:14:12: error: 'a' was not declared in this scope
   14 |     cin >> a >> b;
      |            ^
a.cc:14:17: error: 'b' was not declared in this scope
   14 |     cin >> a >> b;
      |                 ^
a.cc:15:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   15 |     cout << (f(b) ^ f(a - 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:15:14: error: 'f' was not declared in this scope
   15 |     cout << (f(b) ^ f(a - 1)) << endl;
      |              ^
a.cc:15:34: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   15 |     cout << (f(b) ^ f(a - 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>
typedef long long ll
 using namespace std;

ll f(ll a) {
    if (a % 4 == 0) return a;
    if (a % 4 == 1) return 1;
    if (a % 4 == 2) return a + 1;
    return 0;
}
int main()
{
    ll a, b;
    cin >> a >> b;
    cout << (f(b) ^ f(a - 1)) << endl;
}


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

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pa;
#define MM 1000000000
#define MOD MM+7
#define MAX 10100000
#define INF 1e15
#define MAP 110
#define initial_value -1
#define LINF 1LL << 60
#define Pair pair<int,int>
#define chmax(a,b) (a<b ? a=b:0)
#define chmin(a,b) (a>b ? a=b:0)
int dx[4] = {-1,0,1,0};
int dy[4] = {0,-1,0,1};
ll ans = 0;
void cal(ll x){
    if(x % 4 == 0) ans += x;
    else if(x % 4 == 1) ans = (x^(x+1)^(x+2)^(x+3));
    else if(x % 4 == 2) ans = (x^(x+1)^(x+2));
    else ans = (x^(x+1));
}
void cal2(ll x){
    if(x % 4 == 0) ans += (x^(x-1)^(x-2)^(x-3));
    else if(x % 4 == 1) ans += (x^(x-1)^(x-2));
    else if(x % 4 == 2) ans += (x^(x-1));
    else ans ^= x;
}
int main(){
    cin >> A >> B;
    if(B <= 4){
        for(int i = A; i <= B; i++){
            ans ^= i;
        }
        cout << ans << endl;
        return 0;
    }
    cal(A); cal2(B);
    cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:31:12: error: 'A' was not declared in this scope
   31 |     cin >> A >> B;
      |            ^
a.cc:31:17: error: 'B' was not declared in this scope
   31 |     cin >> A >> B;
      |                 ^
Language: C++

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

long long make_XOR(long long N) {
	if (N % 4 == 1) return 1;
	else if (N % 4 == 3) return 0;
	else if (N % 4 == 0) {
		return N;
	}
	else {
		long long div;
		div = N / 4;
		return div * 4 + 3;
	}
}

int main() {
	long long A, B; cin >> A >> B;
	long long XOR_A, XOR_B;
	if(A!=0) XOR_A = make_XOR(A - 1);
	else XOR_A = 0;
	XOR_B = make_XOR(B);
	cout << XOR_A ^ XOR_B << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:31: error: invalid operands of types 'long long int' and '<unresolved overloaded function type>' to binary 'operator<<'
   23 |         cout << XOR_A ^ XOR_B << endl;
      |                         ~~~~~~^~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

int main(){
    ios::sync_with_stdio(false);
    ll A, B, ans=0;
    cin >> A >> B;
    ll bb = 1
    for(int i=0;i<40;i++){
        ll is1=0;
        for(ll j=A;j<=B;j++){
            if((j%(bb*2))/(bb)==1) is1++;
        }
        if(is1%2==1) ans += (bb);
        bb *= 2;
    }
    cout << ans << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:5: error: expected ',' or ';' before 'for'
   14 |     for(int i=0;i<40;i++){
      |     ^~~
a.cc:14:17: error: 'i' was not declared in this scope
   14 |     for(int i=0;i<40;i++){
      |                 ^
Language: C++

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

int main() {
	long long a, b;
	cin >> a >> b;
	if (a > 0) a--;
	if (a % 2 == 0) {
		if ((a / 2) % 2 == 1) {
			a++;
		}
	}
	else {
		if ((a + 1) / 2 % 2 == 0) {
			a = 0;
		}
		else {
			a = 1;
		}
	}
	if (b % 2 == 0) {
		if ((b / 2) % 2 == 1) {
			b++;
		}
	}
	else {
		if ((b + 1) / 2 % 2 == 0) {
			b = 0;
		}
		else {
			b = 1;
		}
	}
	a = min(a, b);
	b = max(a, b);
	if (b == 0) {
		cout << 0 << endl;
		return;
	}
	long long c = a, d = b;
	int acount = 0, bcount = 0;
	while (c > 0) {
		if (c % 2 == 0) {
			c /= 2;
		}
		else {
			c = (c - 1) / 2;
		}
		acount++;
	}
	while (d > 0) {
		if (d % 2 == 0) {
			d /= 2;
		}
		else {
			d = (d - 1) / 2;
		}
		bcount++;
	}
	int e[acount], f[bcount];
	if (a != 0) {
		for (int i = 0; i < acount; i++) {
			if (a % 2 == 0) {
				e[i] = 0;
				a /= 2;
			}
			else {
				e[i] = 1;
				a = (a - 1) / 2;
			}
		}
	}
	for (int i = 0; i < bcount; i++) {
		if (b % 2 == 0) {
			f[i] = 0;
			b /= 2;
		}
		else {
			f[i] = 1;
			b = (b - 1) / 2;
		}
	}
	long long ans = 0, x = 1;
	for (int i = 0; i < bcount; i++) {
		if (i < acount) {
			if (e[i] != f[i]) {
				ans += x;
			}
		}
		else {
			if (f[i] == 1) {
				ans += x;
			}
		}
		x *= 2;
	}
	cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:38:17: error: return-statement with no value, in function returning 'int' [-fpermissive]
   38 |                 return;
      |                 ^~~~~~
Language: C++

#include <iostream>
using namespace std;

int main() {
  int a,b;
  cin >> a >> b;
  if (a>b){
    int tmp=a;
    a=b;
    b=tmp;
  }
  tmp=0;
  for(int i=a;i<=b;i++)tmp^=i;
  cout << tmp << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:3: error: 'tmp' was not declared in this scope; did you mean 'tm'?
   12 |   tmp=0;
      |   ^~~
      |   tm
Language: C++


#include <iostream>
using namespace std;

int main() {
  int a,b;
  cin >> a >> b;
  if (a>b){
    int tmp=a;
    a=b
    b=tmp
  }
  tmp=0;
  for(int i=a;i<=b;i++)tmp^=i;
  cout << tmp << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:8: error: expected ';' before 'b'
   10 |     a=b
      |        ^
      |        ;
   11 |     b=tmp
      |     ~   
a.cc:13:3: error: 'tmp' was not declared in this scope; did you mean 'tm'?
   13 |   tmp=0;
      |   ^~~
      |   tm
Language: C++

#include <iostream>

using u64 = unsigned long long;

u64 f_0(u64 x){
  switch(x % 4){
    case 0: return 0;
    case 1: return x - 1;
    case 2: return 1;
    case 3: return x;
  }
}

int main(){
  u64 A, B;
  std::cin >> A >> B;
  std::cout << f_0(A) ^ f_0(B + 1) << std::endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:36: error: invalid operands of types 'u64' {aka 'long long unsigned int'} and '<unresolved overloaded function type>' to binary 'operator<<'
   17 |   std::cout << f_0(A) ^ f_0(B + 1) << std::endl;
      |                         ~~~~~~~~~~~^~~~~~~~~~~~
a.cc: In function 'u64 f_0(u64)':
a.cc:12:1: warning: control reaches end of non-void function [-Wreturn-type]
   12 | }
      | ^
Language: C++

#include<bits/stdc++.h>
#define int long long
int f(int x){
	if(x%2)return x%4==1;
	return b+(b%4)/2;
}
signed main(){
	int a,b;
	cin>>a>>b;
	cout<<(f(a-1)^f(b))<<endl;
}


Compiler output:
a.cc: In function 'long long int f(long long int)':
a.cc:5:16: error: 'b' was not declared in this scope
    5 |         return b+(b%4)/2;
      |                ^
a.cc: In function 'int main()':
a.cc:9:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    9 |         cin>>a>>b;
      |         ^~~
      |         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:10:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   10 |         cout<<(f(a-1)^f(b))<<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:10:30: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   10 |         cout<<(f(a-1)^f(b))<<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: Java

import java.util.*;

public class XOR {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String in[];
        long a, b, x, ret;
        in = scanner.nextLine().split(" ");
        a = Long.parseLong(in[0]);
        b = Long.parseLong(in[1]);

        if (a == b) {
            System.out.println(a);
            return;
        }

        ret = 0;
        for (long i = a; i < b; i++) {
            ret ^= (i ^ (i+1));
        }

        if ((b - a) % 2 == 0) {
            ret--;
        }
        System.out.println(ret);
    }
}

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

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String in[];
        long a, b, x, ret;
        in = scanner.nextLine().split(" ");
        a = Long.parseLong(in[0]);
        b = Long.parseLong(in[1]);

        if (a == b) {
            System.out.println(ret);
            return;
        }

        ret = 0;
        for (long i = a; i < b; i++) {
            ret ^= (i ^ (i+1));
        }

        if ((b - a) % 2 == 0) {
            ret--;
        }
        System.out.println(ret);
    }
}

Compiler output:
Main.java:13: error: variable ret might not have been initialized
            System.out.println(ret);
                               ^
1 error
Language: C++

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

long long int f(long long int n){
  if(n==-1){
    return 0;
  }else{
    long long int output=0;
    output+=static_cast<int>(floor((n+1)/2)%2;
    for(long long int i=1;i<40;i++){
      long long int digit=pow(2,i);
      long long int mod=(n+1)%(2*digit);
      long long int k;
      if(mod<=digit){
        k=0;
      }else{
        k=mod%2;
      }
      output+=digit*k;
    }
    return output;
  }
}
    
int main(){
  long long int a,b;
  cin>>a>>b;
  cout<< (f(a-1) ^ f(b)) << endl;
  return 0;
}


Compiler output:
a.cc: In function 'long long int f(long long int)':
a.cc:10:44: error: invalid operands of types '__gnu_cxx::__enable_if<true, double>::__type' {aka 'double'} and 'int' to binary 'operator%'
   10 |     output+=static_cast<int>(floor((n+1)/2)%2;
      |                              ~~~~~~~~~~~~~~^~
      |                                   |         |
      |                                   |         int
      |                                   __gnu_cxx::__enable_if<true, double>::__type {aka double}
a.cc:10:46: error: expected ')' before ';' token
   10 |     output+=static_cast<int>(floor((n+1)/2)%2;
      |                                              ^
      |                                              )
Language: C++

#include<iostream>
using u64 = unsigned long long;
u64 f_0(u64 x){
  switch(x % 4){
    case 0: return 0;
    case 1: return x-1;
    case 2: return 1;
    case 3: return x;
  }
}

int main(){
  u64 a, b;
  std::cin >> a >> b;
  std::cout << f_0(a) ^ f_0(b+1) << std::endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:34: error: invalid operands of types 'u64' {aka 'long long unsigned int'} and '<unresolved overloaded function type>' to binary 'operator<<'
   15 |   std::cout << f_0(a) ^ f_0(b+1) << std::endl;
      |                         ~~~~~~~~~^~~~~~~~~~~~
a.cc: In function 'u64 f_0(u64)':
a.cc:10:1: warning: control reaches end of non-void function [-Wreturn-type]
   10 | }
      | ^
Language: C++

#include<iostream>
using namespace std; // 575

long xor(long N) {
	switch(N % 4) {
		case 0: return N;
		case 1: return 1;
		case 2: return N ^ 1;
		case 3: return 0;
	}
}
int main() {
	long A, B;
	cin >> A >> B;
	cout << (xor(max(0L, A - 1)) ^ xor(B));
	return 0;
}
/*
31536000のコメント解説欄
ここテンプレで用意してるから、A問題とかだとこの先空欄の危険あり
また、コンテスト後に https://31536000.hatenablog.com/ で解説していると思うので、良かったら読んでねー

各bitについて、AからBまでの間に何回呼ばれるか考える
基本的に偶奇を考えれば良いことに着目すると、第n番目のbitに関してmod 2^nで考えていい
というかもっと端折ってmod 4で考えても実は良さそう
何故ならnとn+1、これのxorは1なので4回で戻るわ
A mod 4の結果が0ならA, 1なら1, 2ならA ^ 1, 3なら0で終わり
Bも同様にやって最後にxorで終了
*/

Compiler output:
a.cc:4:6: error: expected unqualified-id before 'xor' token
    4 | long xor(long N) {
      |      ^~~
a.cc: In function 'int main()':
a.cc:15:18: error: expected primary-expression before 'xor' token
   15 |         cout << (xor(max(0L, A - 1)) ^ xor(B));
      |                  ^~~
a.cc:15:40: error: expected primary-expression before 'xor' token
   15 |         cout << (xor(max(0L, A - 1)) ^ xor(B));
      |                                        ^~~
Language: C++

#include<iostream>
using namespace std;

int main(){
  long int A,B;
  cin>>A>>B;
  
  if (A % 4 == 0) P=A;
  if (A % 4 == 1) P=1;
  if (A % 4 == 2) P=A+1;
  if (A % 4 == 3) P=0;
  
  if (B % 4 == 0) Q=B;
  if (B % 4 == 1) Q=1;
  if (B % 4 == 2) Q=B+1;
  if (B % 4 == 3) Q=0;
 
  int binary=P^Q;
  int decimal = 0;
  int base = 1;
  
  while(binary>0){
    decimal = decimal + ( binary % 10 ) * base;
    binary = binary / 10;
    base = base * 2;
  }
  
  cout<<decimal<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:19: error: 'P' was not declared in this scope
    8 |   if (A % 4 == 0) P=A;
      |                   ^
a.cc:9:19: error: 'P' was not declared in this scope
    9 |   if (A % 4 == 1) P=1;
      |                   ^
a.cc:10:19: error: 'P' was not declared in this scope
   10 |   if (A % 4 == 2) P=A+1;
      |                   ^
a.cc:11:19: error: 'P' was not declared in this scope
   11 |   if (A % 4 == 3) P=0;
      |                   ^
a.cc:13:19: error: 'Q' was not declared in this scope
   13 |   if (B % 4 == 0) Q=B;
      |                   ^
a.cc:14:19: error: 'Q' was not declared in this scope
   14 |   if (B % 4 == 1) Q=1;
      |                   ^
a.cc:15:19: error: 'Q' was not declared in this scope
   15 |   if (B % 4 == 2) Q=B+1;
      |                   ^
a.cc:16:19: error: 'Q' was not declared in this scope
   16 |   if (B % 4 == 3) Q=0;
      |                   ^
a.cc:18:14: error: 'P' was not declared in this scope
   18 |   int binary=P^Q;
      |              ^
a.cc:18:16: error: 'Q' was not declared in this scope
   18 |   int binary=P^Q;
      |                ^
Language: C

#include <stdio.h>
#include <stdlib.h>

long func(long x, long y){
  if(labs(x-y)==1)
    return x^y;
  else
    return y ^ func(x, y-1);
}

int main(void){

  long a=0, b=0;
  int a = scanf("%ld %ld", &a, &b);
  printf("%ld", func(a, b));
  return 0;

}

Compiler output:
main.c: In function 'main':
main.c:14:7: error: conflicting types for 'a'; have 'int'
   14 |   int a = scanf("%ld %ld", &a, &b);
      |       ^
main.c:13:8: note: previous definition of 'a' with type 'long int'
   13 |   long a=0, b=0;
      |        ^
Language: C++

#include<iostream>
using namespace std;

int main(){
  long int A,B;
  cin>>A>>B;
  
  long int P=A/2;
  if(P%2==0) P=0;
  else P=1;
  if(A%2==1) P ^= A-1;
  
  long int Q=B/2;
  if(Q%2==0) Q=0;
  else Q=1;
  if(B%2==1) Q ^= B-1;
  
  cout<<P^Q<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:12: error: invalid operands of types 'long int' and '<unresolved overloaded function type>' to binary 'operator<<'
   18 |   cout<<P^Q<<endl;
      |           ~^~~~~~
Language: C++

#include<iostream>
#include<iomanip>
#include<algorithm>
#include<cstring>
#include<string>
#include<cmath>
#include<vector>
#include<queue>
#include<deque>
#include<stack>
#include<map>
#include<set>
using namespace std;
const int inf=2147483647,dx[]={-1,0,1,0},dy[]={0,-1,0,1};// 上 左 下 右
const int N=100005,M=1000005,mod=1000000007;
const long long llinf=9223372036854775807ll;
long long a,b,pw,res,aa,bb;
bool x[45],y[45],ans[45],x1,x2,y1,y2;
int c1a,c1b,sz1,sz2;
int main(){
	cin>>a>>b;
	aa=a,bb=b;
	if(a==b)
	{
		cout<<a;
		return 0;
	}
	for(int i=1;aa;i++)
		x[i]=aa%2,aa>>=1,sz1++;
	for(int i=1;bb;i++)
		y[i]=bb%2,bb>>=1,sz2++;
	pw=1ll;
	for(int i=1;i<=max(sz1,sz2);i++,pw*=2ll)
		ans[i]=x[i]^y[i];
	for(int i=3;i<=45;i++)
	{
		if(x[i]==1)
			c1a++;
		if(y[i]==1)
			c1b++;
	}
	x1=x[2],x2=x[1],y1=y[2],y2=y[1];
	if(x1==0&&x2==0&&y1==0&&y2==0)
	{
		cout<<b;
		return 0;
	}
	if(x1==0&&x2==0&&y1==0&&y2==1)
	{
		cout<<1;
		return 0;
	}
	if(x1==0&&x2==0&&y1==1&&y2==0)
	{
		for(int i=1;i<=max(sz1,sz2);i++)
			cout<<1;
		return 0;
	}
	if(x1==0&&x2==0&&y1==1&&y2==1)
	{
		cout<<0;
		return 0;
	}
	if(x1==0&&x2==1&&y1==0&&y2==0)
	{
		ans[1]=ans[2]=0;
		pw=1;
		for(int i=1;i<=max(sz1,sz2);i++,pw*=2ll)
		{
			if(ans[i])
				res+=pw;
		}
		cout<<res;
		return 0;
	}
	if(x1==1&&x2==0&&y1==0&&y2==0)
	{
		cout<<b+1;
		return 0;
	}
	if(x1==1&&x2==1&&y1==0&&y2==0)
	{
		pw=1;
		for(int i=1;i<=max(sz1,sz2);i++,pw*=2ll)
		{
			if(ans[i])
				res+=pw;
		}
		cout<<res;
		return 0;
	}
	return 0;
}

Compiler output:
a.cc:18:32: error: 'bool y1' redeclared as different kind of entity
   18 | bool x[45],y[45],ans[45],x1,x2,y1,y2;
      |                                ^~
In file included from /usr/include/features.h:523,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/os_defines.h:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/c++config.h:683,
                 from /usr/include/c++/14/bits/requires_hosted.h:31,
                 from /usr/include/c++/14/iostream:38,
                 from a.cc:1:
/usr/include/x86_64-linux-gnu/bits/mathcalls.h:257:1: note: previous declaration 'double y1(double)'
  257 | __MATHCALL (y1,, (_Mdouble_));
      | ^~~~~~~~~~
a.cc: In function 'int main()':
a.cc:42:27: error: assignment of function 'double y1(double)'
   42 |         x1=x[2],x2=x[1],y1=y[2],y2=y[1];
      |                         ~~^~~~~
a.cc:53:28: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   53 |         if(x1==0&&x2==0&&y1==1&&y2==0)
      |                          ~~^~~
a.cc:59:28: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   59 |         if(x1==0&&x2==0&&y1==1&&y2==1)
      |                          ~~^~~
Language: Java

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
//		System.out.println("    "+Integer.toBinaryString(123));
//		System.out.println(Integer.toBinaryString(456));
//		System.out.println(Integer.toBinaryString(456-123));
//		System.out.println(Integer.toBinaryString(123^456));
//		System.out.println(123^456);
//		for(int j = 0; j < 30; j++) {
//			System.out.println(j+"  "+ (j+30));
//			//System.out.println(Integer.toBinaryString(j));
//			int k = j;
//			for(int i = k+1; i< j+30; i++) {
//				k = k^i;
//				//System.out.println(i+"  " + k);
//				//System.out.println(Integer.toBinaryString(i)+"  " +Integer.toBinaryString(k));
//			}
//			System.out.println(k+"  "+Integer.toBinaryString(j)+"  "+Integer.toBinaryString(k)+"  "+Integer.toBinaryString(j^(j+30)));
//			System.out.println("------------");
//		}
		Scanner sc = new Scanner(System.in);
		long A,B;
		A = sc.nextLong();
		B = sc.nextLong();
		//2,4,8,16,32,64,128,256,512,1024,2048,4096,...
		long C = B - A;
		long ans = 0;
		if(C%2==0) {
			ans = 1;
		} else {
			ans = 0;
		}
		System.out.println(A^ans^B);

}


Compiler output:
Main.java:37: error: reached end of file while parsing
}
 ^
1 error
Language: C++

#include <iostream>
#include <algorithm>
#include <cmath>
#include <limits>
#include <vector>
#include <cstdio>
#include <bits/stdc++.h>
#include <set>
#include <map>
#include <stdio.h>
#include <stack>
#include <queue>
#include <deque>
#include <numeric>
#include <bits/stdc++.h>
#include <utility>
#include <iomanip>

#define ALL(obj) (obj).begin(), (obj).end()
#define FOR(i,a,b) for(int i = (a); i < (b); i++)
#define RFOR(i,a,b) for(int i = (a); (b) <= i; i--)
#define REP(i,n) for(int i = 0; i < (n); i++)
#define RREP(i,n) for(int i = n; n <= i; i--)
#define ABS(a) ((a < 0) ? ((-1)*(a)) : (a))
#define elif else if
#define MOD 1000000007
#define INF (1<<30)

using namespace std;

#define ld long double
#define ll long long

map <int ,int> mpa,mpb;
typedef pair<ll, ll> P;
priority_queue<P, vector<P>, greater<P>> pque;

int main(){
  ios::sync_with_stdio(false);
  cin.tie(NULL);
  ll A,B;
  ll ans=0;
  cin >> A >> B;
  if(A==B){
    cout << A << endl;
    return 0;
  }
  ll an=(A/2)%2;
  ans=(A-1)^an;
  ll anb=((B+1)/2)%2;
  ll anss=B^anb
  anss=anss^ans
  cout << anss << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:52:3: error: expected ',' or ';' before 'anss'
   52 |   anss=anss^ans
      |   ^~~~
Language: C++

#include <iostream>
#include <algorithm>
#include <cmath>
#include <limits>
#include <vector>
#include <cstdio>
#include <bits/stdc++.h>
#include <set>
#include <map>
#include <stdio.h>
#include <stack>
#include <queue>
#include <deque>
#include <numeric>
#include <bits/stdc++.h>
#include <utility>
#include <iomanip>

#define ALL(obj) (obj).begin(), (obj).end()
#define FOR(i,a,b) for(int i = (a); i < (b); i++)
#define RFOR(i,a,b) for(int i = (a); (b) <= i; i--)
#define REP(i,n) for(int i = 0; i < (n); i++)
#define RREP(i,n) for(int i = n; n <= i; i--)
#define ABS(a) ((a < 0) ? ((-1)*(a)) : (a))
#define elif else if
#define MOD 1000000007
#define INF (1<<30)

using namespace std;

#define ld long double
#define ll long long

map <int ,int> mpa,mpb;
typedef pair<ll, ll> P;
priority_queue<P, vector<P>, greater<P>> pque;

int main(){
  ios::sync_with_stdio(false);
  cin.tie(NULL);
  ll A,B;
  ll ans=0;
  cin >> A >> B;
  if(A==B){
    cout << A << endl;
    return 0;
  }
  ll an=(A/2)%2;
  ans=(A-1)^an;
  ll anb=((B+1)/2)%2;
  anss=B^anb
  anss=anss^ans
  cout << anss << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:51:3: error: 'anss' was not declared in this scope; did you mean 'ans'?
   51 |   anss=B^anb
      |   ^~~~
      |   ans
Language: C++

#include <iostream>
#include<algorithm>
#include<cstdio>
#include<cmath>
#include<limits>
#include<string.h>
#include<vector>
#include<stack>
#include<queue>
#include<math.h>
using namespace std;


int main()
{
	int a[42];
	double b, c;
	cin >> b >> c;
	int d = 0;
	int e, f;
	for (int i = 0; i < 42; i++) {
		e = c;
		e=e / pow(2, i);
		f = e % 2;
		if (f != 0) {
			d = d + pow(2, i);
		}
	}
	for (int i = 0; i < 42; i++) {
		e = b;
		e = e / pow(2, i);
		f = e % 2;
		if (f != 0) {
			d = d - pow(2, i);
		}
	}
	cout << d;
    return 0;

Compiler output:
a.cc: In function 'int main()':
a.cc:38:14: error: expected '}' at end of input
   38 |     return 0;
      |              ^
a.cc:15:1: note: to match this '{'
   15 | {
      | ^
Language: C++

#include<iostream>
#include<string>
#include<vector>
#include<stdio.h>
#include<algorithm>
#include<math.h>
#include<numeric>
#include<iomanip>
#include<deque>
#include<tuple>
#include<queue>
#define rep(i, n) for(int i = 0; i < (int)(n); i++)
#define FOR(i,a,b) for(ll i=(a);i<(b);i++)
using ll = long long;
using namespace std;
typedef pair<int, int> P;

bool pc1(const P& firstElof, const P& secondElof)
{//first降順
	return firstElof.first > secondElof.first;
}
bool pc2(const P& firstElof, const P& secondElof)
{//first昇順
	return firstElof.first < secondElof.first;
}
bool pc3(const P& firstElof, const P& secondElof)
{//second降順
	return firstElof.second > secondElof.second;
}
bool pc4(const P& firstElof, const P& secondElof)
{//second昇順
	return firstElof.second < secondElof.second;
}
int main() {
	ll A, B;
	cin >> A >> B;
	ll ans = A;
	ll count = 0;
	if (A % 2 == 0 && B % 2 == 0) {
		//OK
		count = (B - A - 1) / 2;
		if (A == B) {
			ans = ans;
		}
		else {
			if (count % 2 == 0) {
				count = 0;
			}
			else {
				count = 1;
			}
			ans = ans xor count xor B xor (B - 1);
		}

	}
	else if (A % 2 == 0 && B % 2 != 0) {
		//OK?
		count = (B - A - 1) / 2;
		if (A + 1 == B) {
			ans = A xor B;
		}
		else {
			if (count % 2 == 0) {
				count = 0;
			}
			else {
				count = 1;
			}
			ans = count xor A xor B;
		}

	}
	else if (A % 2 !=0&& B % 2 == 0) {
			//OK
			count = (B - A) / 2;
			if (A + 1 == B) {
				ans = A xor B;
			}
			else {
				if (count % 2 == 0) {
					count = 0;
				}
				else {
					count = 1;
				}
				ans = count xor A xor B;
			}
	}else if (B % 2 != 0&& A%2!=0) {
			//OK?
			count = (B - A - 1) / 2;
			if (A == B) {
				ans = ans;
			}
			else {
				if (count % 2 == 0) {
					count = 0;
				}
				else {
					count = 1;
				}
				ans = B xor count xor A xor (B - 1);
			}
		}
	}
	cout << ans << endl;
}


Compiler output:
a.cc:105:9: error: 'cout' does not name a type
  105 |         cout << ans << endl;
      |         ^~~~
a.cc:106:1: error: expected declaration before '}' token
  106 | }
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
vector<ll> bin(60);

ll f(ll a, ll b){
    ll ans = a;
    if((b-a)<bin[16]){
        for(ll i=a; i<b; i++){
            ans ^= (i+1);
        }
        return ans;
    }

    decltype(bin)::iterator it = lower_bound(bin.begin(), bin.end(), a);
    for(int i=0; *(it-i)>=4; i++){
        if(*(it-i)+(*it)<=b){
            return f(a,(*it)-1LL) ^ f(*(it-i)+(*it), b);
            break;
        }
        if((*it)-(*(it-i))>=a){
            return f(a,(*it)-(*(it-i))) ^ f((*it),b);
            break;
        }
    }
}

int main(){
    ll A, B;
    cin >> A >> B;
    b[0] = 1;
    for(int i=1; i<60; i++){
        b[i] = (b[i-1]<<1);
    }
    cout << f(A,B) << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:31:5: error: 'b' was not declared in this scope
   31 |     b[0] = 1;
      |     ^
a.cc: In function 'll f(ll, ll)':
a.cc:26:1: warning: control reaches end of non-void function [-Wreturn-type]
   26 | }
      | ^
Language: C++

A, B = map(int, input().split())


def xor(n):
    m = 0
    if n % 4 == 0:
        m = n
    elif n % 4 == 1:
        m = 1
    elif n % 4 == 2:
        m = n + 1
    return m


p = xor(A-1)
q = xor(B)
print(p ^ q)


Compiler output:
a.cc:1:1: error: 'A' does not name a type
    1 | A, B = map(int, input().split())
      | ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define rep(i, n) for(int i=0;i<n;i++)
#define rep0(i, b, s) for(int i=b;i<s;i++)
typedef long long ll;

int main(){
    ll A, B;
    cin >> A >> B;
    B++;

    vector<int> ans;

    int n = 0;

    while(pow(2, n+1) < B){
        n++;
    }

    int m = n;

    while(n >= 0){
        int numA, numB;
        if (A >= pow(2, n)) {
            numA = A - pow(2,n);
            A -= pow(2, n);
        }
        else numA = 0;

        if (B >= pow(2, n)) {
            numB = B - pow(2,n);
            B -= pow(2, n);
        }
        else numB = 0;

        n--;
        ans.push_back((numB+numA)%2);
    }

    ll ans_num=0;

    for(int i=0; i<=m; i++){
        ans_num += ans[i] * pow(2, m-i);
    }

    else cout << ans_num << endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:46:5: error: 'else' without a previous 'if'
   46 |     else cout << ans_num << endl;
      |     ^~~~
Language: C++

#include<bits/stdc++.h>
#pragma warning(disable:4996)
#ifdef _MSC_VER
#  define __builtin_popcount __builtin_popcountll
#  define __builtin_popcountll __popcnt
#endif
//#define int long long
using namespace std;
using ll = long long;
using ld = long double;
const long double PI = acos(-1.0);
const int dx[4] = { 1,0,-1,0 }, dy[4] = { 0,1,0,-1 };
inline void my_io() {
	std::ios::sync_with_stdio(false);
	std::cin.tie(0);
	std::cout << fixed << setprecision(10);
}
int a, b;
int my_function(int num) {
	int ans = 0;
	int bit_size = 0;
	int numkari = num;
	while (numkari >0) {
		numkari /= 2;
		bit_size++;
	}
	for (int i = (1 << bit_size) - 1; i < num; i++) {
		ans^i;
	}
	return ans;
}
signed main() {
	my_io();
	cin >> a >> b;
	cout << my_function(a) ^ my_function(b) << endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:35:49: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
   35 |         cout << my_function(a) ^ my_function(b) << endl;
      |                                  ~~~~~~~~~~~~~~~^~~~~~~
Language: C++

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

long long a,b;
typedef pair<long long,long long> P;

bool sortp(const P& a,const P&b){
	return a.first<b.first;
}
long long digits(long long a){
	for(long long i=0;;i++){
		if(!(a>>=1))
			return i;
	}
}
long long booldigits(long long& a,long long b){
	return (a&(long long(1)<<b));
}

long long xorbits(long long a){
	long long num=digits(a);
	long long ans=0;
	for(long long i=0;i<num+1;i++)
	{
		long long bits=0;
		bits+=a>>(i+1);
		bits*=(long long (1)<<i);
		if(booldigits(a,i))
		{
			bits+=(a-((a>>i)<<i)+1);
		}
		//cout<<bits<<' ';
		if(bits%2)
			ans+=(long long(1)<<i);
	}
	return ans;
}

int main()
{
	cin>>a>>b;//b>a
	cout<<(xorbits(b)^xorbits(a>0?a-1:0))<<endl;
	return 0;
}

Compiler output:
a.cc: In function 'long long int booldigits(long long int&, long long int)':
a.cc:20:20: error: expected primary-expression before 'long'
   20 |         return (a&(long long(1)<<b));
      |                    ^~~~
a.cc:20:20: error: expected ')' before 'long'
   20 |         return (a&(long long(1)<<b));
      |                   ~^~~~
      |                    )
a.cc:20:37: error: expected ')' before ';' token
   20 |         return (a&(long long(1)<<b));
      |                ~                    ^
      |                                     )
a.cc: In function 'long long int xorbits(long long int)':
a.cc:30:24: error: expected primary-expression before 'long'
   30 |                 bits*=(long long (1)<<i);
      |                        ^~~~
a.cc:30:24: error: expected ')' before 'long'
   30 |                 bits*=(long long (1)<<i);
      |                       ~^~~~
      |                        )
a.cc:37:31: error: expected primary-expression before 'long'
   37 |                         ans+=(long long(1)<<i);
      |                               ^~~~
a.cc:37:31: error: expected ')' before 'long'
   37 |                         ans+=(long long(1)<<i);
      |                              ~^~~~
      |                               )
Language: C++

#include <iostream>
using namespace std;
int main() {
  long long a, b;
  cin >> a >> b;
  if(a == b) {
    cout << a << endl;
  } else if((b - a) % 4 == 3) {
    cout << 0 << endl;
  } else if((b - a) % 4 == 0){
    cout << b << endl;
  }else {
    long long s = a % 4;
    long long n = (b - a) % 4;
    if(a % 4 == 0) {
      long long ans = b - n;
    } else if(a % 4 == 3) {
      long long ans = 0;
    } else if(a % 4 == 2) {
      long long ans = a;
      ans = ans^a+1;
      ans = ans^a+2
    } else if(a % 4 == 1) {
      long long ans = a;
      ans = ans^a+1;
    }
    long i;
    for(i = ans + 1; i <= b; i++) {
      ans = ans ^ i;
    }
    cout << ans << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:20: error: expected ';' before '}' token
   22 |       ans = ans^a+2
      |                    ^
      |                    ;
   23 |     } else if(a % 4 == 1) {
      |     ~               
a.cc:28:13: error: 'ans' was not declared in this scope; did you mean 'abs'?
   28 |     for(i = ans + 1; i <= b; i++) {
      |             ^~~
      |             abs
a.cc:31:13: error: 'ans' was not declared in this scope; did you mean 'abs'?
   31 |     cout << ans << endl;
      |             ^~~
      |             abs
Language: C++

#include <cstring>
#include <sstream>
#include <cstdio>
#include <algorithm>
#include <iostream>
#include <vector>
#include <map>
#include <unordered_map>
#include <cmath>
#include <queue>
#include <set>
#include <numeric>
#include <stack>

using namespace std;
typedef long long ll;
#define rep(i, n) for(ll i = 0; i < (ll)(n); i++)
#define repr(i, n) for(ll i = n - 1; i >= 0; i--)
#define repone(i, n) for(ll i = 1; i <= (ll)(n); i++)
#define each(i, mp) for(auto i:mp)
const int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};
const ll mod = 1000000007;
const ll inf = ll(1e9);
const ll half_inf = ll(1e5);
const ll ll_inf = ll(1e9) * ll(1e9);
typedef unordered_map<ll, ll> ump;
typedef pair<ll, ll> P;

ump mp;

int main() {
#ifdef MY_DEBUG
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wmissing-noreturn"
    while (true) {
        mp = ump();
#pragma clang diagnostic pop
#endif


        ll a, b;
        cin >> a >> b;
        bitset<48> bita(a), bitb(b);
        int bi = 0;
        int ai = 0;

        ll c[48];
        fill(c, c + 48, 0);

        rep(i, 48) {
            if (bitb[i] == 1) {
                bi = i;
                c[i]++;
            }
            if (bita[i] == 1) {
                ai = i;
                c[i]++;
            }
        }
        rep(i, bi) c[i] += pow(2, i);
        rep(i, ai) c[i] += pow(2, i);
        bitset<48> ans;
        rep(i, 48) {
            if (c[i] != 0 && c[i] % 2 == 0) ans[i] = 1;
            else ans[i] = 0;
        }

        cout << ans.to_ullong() << endl;


#ifdef MY_DEBUG
    }
#endif
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:43:9: error: 'bitset' was not declared in this scope
   43 |         bitset<48> bita(a), bitb(b);
      |         ^~~~~~
a.cc:14:1: note: 'std::bitset' is defined in header '<bitset>'; this is probably fixable by adding '#include <bitset>'
   13 | #include <stack>
  +++ |+#include <bitset>
   14 | 
a.cc:43:20: error: 'bita' was not declared in this scope
   43 |         bitset<48> bita(a), bitb(b);
      |                    ^~~~
a.cc:43:29: error: 'bitb' was not declared in this scope
   43 |         bitset<48> bita(a), bitb(b);
      |                             ^~~~
a.cc:62:20: error: 'ans' was not declared in this scope; did you mean 'abs'?
   62 |         bitset<48> ans;
      |                    ^~~
      |                    abs
Language: C++

/* D */

#include <iostream>
#include <algorithm>
#include <sstream>
#include <string>
#include <bitset>
using namespace std;

int main(){
	int a, b;
	cin >> a >> b;

	int x[40];

	for (int i = 0; i < 40; ++i)
	{
		x[i] = 0;
	}



	for(int k = a; k <= b; k++){
		stringstream ss;
		ss << bitset<40>(k);
		string s = ss.str();

		for(int i = 0; i < 40; i++){
			if(s[i] == '1'){
				x[i]++;
			}
		}
	}

	stringstream sum;

	for(int i = 0; i < 40; i++){
		if(x[i] % 2 == 1){
			sum << x[i];
		}else{
			sum << 0;
		}
	}

	long long p;

	string q = sum.str()

	for (int i = 0; i < 40; ++i)
	{
		if(q[i] == 1){
			p += 2 ^ (39 - i);
		}
	}

	cout << p << endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:49:9: error: expected ',' or ';' before 'for'
   49 |         for (int i = 0; i < 40; ++i)
      |         ^~~
a.cc:49:25: error: 'i' was not declared in this scope
   49 |         for (int i = 0; i < 40; ++i)
      |                         ^
Language: C++

#include<bits/stdc++.h>
#pragma warning(disable:4996)
#ifdef _MSC_VER
#  define __builtin_popcount __builtin_popcountll
#  define __builtin_popcountll __popcnt
#endif
//#define int long long
using namespace std;
using ll = long long;
using ld = long double;
const long double PI = acos(-1.0);
const int dx[4] = { 1,0,-1,0 }, dy[4] = { 0,1,0,-1 };
inline void my_io() {
	std::ios::sync_with_stdio(false);
	std::cin.tie(0);
	std::cout << fixed << setprecision(10);
}
int a, b;
int my_function(int num) {
	int ans = 0;
	int bit_size = 0;
	int numkari = num;
	while (numkari >0) {
		numkari /= 2;
		bit_size++;
	}
	for (int i = (1 << bit_size) - 1; i < a; i++) {
		ans^i;
	}
	return ans;
}
signed main() {
	my_io();
	cin >> a >> b;
	cout << my_function(a) ^ my_function(b) << endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:35:49: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
   35 |         cout << my_function(a) ^ my_function(b) << endl;
      |                                  ~~~~~~~~~~~~~~~^~~~~~~
Language: C++

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

long long f(long long x){
  long long ans = 0;

  for(int i=2; i<=x; i = i*=2){
    long long y = x % i;

    for(int l = 0; l<i-1; ++l){
      y = (y+1) ^ y;
    }

    ans += y*i/2;
  }

  return ans;
}

int main(){
  long long a, b;

  cin >> a >> b;

  cout << f(b) ^ f(a) << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:27:23: error: invalid operands of types 'long long int' and '<unresolved overloaded function type>' to binary 'operator<<'
   27 |   cout << f(b) ^ f(a) << endl;
      |                  ~~~~~^~~~~~~
Language: C++

/* D */

#include <iostream>
#include <algorithm>
#include <sstream>
#include <string>
#include <bitset>
using namespace std;

int main(){
	int a, b;
	cin >> a >> b;

	int x[40];

	for (int i = 0; i < 40; ++i)
	{
		x[i] = 0;
	}



	for(int k = a; k <= b; k++){
		stringstream ss;
		ss << bitset<40>(k);
		string s = ss.str();

		for(int i = 0; i < 40; i++){
			if(s[i] == '1'){
				x[i]++;
			}
		}
	}

	stringstream sum;

	for(int i = 0; i < 40; i++){
		if(x[i] % 2 == 1){
			sum << x[i];
		}else{
			sum << 0;
		}
	}

	long long p;

	string a = sum.str()

	for (int i = 0; i < 40; ++i)
	{
		if(a[i] == 1){
			p += 2 ^ (39 - i);
		}
	}

	cout << p << endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:47:16: error: conflicting declaration 'std::string a'
   47 |         string a = sum.str()
      |                ^
a.cc:11:13: note: previous declaration as 'int a'
   11 |         int a, b;
      |             ^
a.cc:49:25: error: 'i' was not declared in this scope
   49 |         for (int i = 0; i < 40; ++i)
      |                         ^
Language: C++

#include <iostream>

using namespace std;

int main()
{
    long long int a, b, tmpa = 0, tmpb = 0, ans = 0; 
    cin >> a >> b;

    for (long long int i = 1; tmpa => a; i *= 2) tmpa = i;
    for (long long int i = 1; tmpb <= b; i *= 2) tmpb = i;
    for (long long int i = a; i < tmpa; i++) ans ^= i;
    for (long long int i = tmpb; i <= b; i++) ans ^= i;

    cout << ans << endl;


Compiler output:
a.cc: In function 'int main()':
a.cc:10:37: error: expected primary-expression before '>' token
   10 |     for (long long int i = 1; tmpa => a; i *= 2) tmpa = i;
      |                                     ^
a.cc:15:25: error: expected '}' at end of input
   15 |     cout << ans << endl;
      |                         ^
a.cc:6:1: note: to match this '{'
    6 | {
      | ^
Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
#include <functional>
#include <map>
#include <cstdlib>
#include <math.h>

using namespace std;

typedef long long ll;
#define rep(i, n) for(long (i) = 0; (i) < (long) (n); (i)++)
#define rep1(i,n) for(int i=1;i<=(n);i++)
#define rrep(i,a,b) for(long i=(a);i<(b);i++)
#define rrep1(i,a,b) for(ll i=(a);i<=(b);i++)
#define rrrep(i,a,b) for(long i=(a);i>=(b);i--)
#define define pb push_back
#define ALL(obj) (obj).begin(), (obj).end()
#define X first
#define Y second
#define vi vector<int>
#define vl vector<ll>
#define vvi vector<vector<int> >
#define vpl vector<pair<long, long> >
#define vppl vector<pair<long, pair<long, long> > >

const int INF = 100100100;
const long LONG_INF = 2147483647;
const int MOD = (int)1e9 + 7;
const double EPS = 1e-9;
const ll LINF = 1e18;


int pow(int x) {
	if (x == 0) {
		return 1;
	}
	else {
		return pow(x - 1) * 2;
	}
}

int main(int argc, char const *argv[])
{
	cin.tie(0);
	ios::sync_with_stdio(false);
    ll a,b;
    cin >> a >> b;
    ll ans = 0;
    ll x,y;
    ll c = a & 11, d = b & 11;
    if (c == 0) {
        x = 0;
    } else if (c == 1)
    {
        x = a ^ (a+1) ^ (1+2);
    } else if (c == 2)
    {
        x = a ^ (a+1);
    } else
    {
        x = a;
    }
    
    if (d == 3){
        y = 0;
    } else if (d == 2)
    {
        y = b ^ (b - 1) ^ (b - 2);
    } else if (d == 1)
    {
        y = b ^ (b - 1);
    } else
    {
        y = b;
    }
    ll ans = x ^ y;
    
    cout << ans << endl;
    
    
    // bool c = true, d = true;
    // ll e = 1, f = 1;
    // ll ansa = 0, ansb = 0;
    // while(c){
    //     if (a >= e) {
    //         e = e << 1;
    //     } else
    //     {
    //         rrep1(i,a,e-1){
    //             ansa = ansa ^ i;
    //         }
    //         c = false;
    //     }   
    // }
    
    // while(d){
    //     if (b >= f) {
    //         f = f << 1;
    //     } else
    //     {
    //         f = f >> 1;
    //         rrep1(i,f,b){
    //             ansb = ansb ^ i;
    //         }
    //         d = false;
    //     }   
    // }
    // cout << (ansa ^ ansb) << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main(int, const char**)':
a.cc:77:8: error: redeclaration of 'll ans'
   77 |     ll ans = x ^ y;
      |        ^~~
a.cc:49:8: note: 'll ans' previously declared here
   49 |     ll ans = 0;
      |        ^~~
Language: C++

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

long long a,b;
typedef pair<long long,long long> P;

bool sortp(const P& a,const P&b){
	return a.first<b.first;
}
long long digits(long long a){
	for(long long i=0;;i++){
		if(!(a>>=1))
			return i;
	}
}
long long booldigits(long long& a,long long b){
	return (a&(long long(1)<<b));
}

long long xorbits(long long a){
	long long num=digits(a);
	long long ans=0;
	for(long long i=0;i<num+1;i++)
	{
		long long bits=0;
		bits+=a>>(i+1);
		bits*=(long long (1)<<i);
		if(booldigits(a,i))
		{
			bits+=(a-((a>>i)<<i)+1);
		}
		//cout<<bits<<' ';
		if(bits%2)
			ans+=(long long(1)<<i);
		if(bits<0)
				cout<<'a';
	}
	return ans;
}

int main()
{
	cin>>a>>b;//b>a
	cout<<(xorbits(b)^xorbits(a>0?a-1:0))<<endl;
	return 0;
}

Compiler output:
a.cc: In function 'long long int booldigits(long long int&, long long int)':
a.cc:20:20: error: expected primary-expression before 'long'
   20 |         return (a&(long long(1)<<b));
      |                    ^~~~
a.cc:20:20: error: expected ')' before 'long'
   20 |         return (a&(long long(1)<<b));
      |                   ~^~~~
      |                    )
a.cc:20:37: error: expected ')' before ';' token
   20 |         return (a&(long long(1)<<b));
      |                ~                    ^
      |                                     )
a.cc: In function 'long long int xorbits(long long int)':
a.cc:30:24: error: expected primary-expression before 'long'
   30 |                 bits*=(long long (1)<<i);
      |                        ^~~~
a.cc:30:24: error: expected ')' before 'long'
   30 |                 bits*=(long long (1)<<i);
      |                       ~^~~~
      |                        )
a.cc:37:31: error: expected primary-expression before 'long'
   37 |                         ans+=(long long(1)<<i);
      |                               ^~~~
a.cc:37:31: error: expected ')' before 'long'
   37 |                         ans+=(long long(1)<<i);
      |                              ~^~~~
      |                               )