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

#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#include <bits/stdc++.h>
#include <intrin.h>

using namespace std;

#define countof(a) (sizeof(a)/sizeof(*a))

#define vi vector<int>
#define vvi vector<vector<int> >
#define vpi vector<pi >
#define pi pair<int,int>
#define mp make_pair
#define fi first
#define se second
#define all(n) n.begin(), n.end()

#define FROMTO(var, from, to) for (register int var = (from), var##down = ((int)(to)) < ((int)(from));var##down ? (var >= (int)(to)) : (var <= (int)(to));var##down ? var-- : var++)
#define UPTO(var, from, to)   for (register int var = (from); var <= ((int)to); var++)
#define DOWNTO(var, from, to) for (register int var = (from); var >= ((int)to); var--)
#define FOR(var, to)          UPTO(var, 0, (to)-1)
#define DOWN(var, from)       DOWNTO(var, (from)-1, 0)

#define INIT(var, val) FOR(i,countof(var)) var[i] = val
#define INPUT(var) FOR(i,countof(var)) cin >> var[i]
#define INPUT1(var) FOR(i,countof(var)) cin >> var[i], var[i]--

#define SORT(v) qsort(v,countof(v),sizeof(*v),int_less)
#define SORTT(v) qsort(v,countof(v),sizeof(*v),int_greater)
#define QSORT(v,b) qsort(v,countof(v),sizeof(*v),b)

#define MOD 1000000007
#define INF ((1 << 30)-1)
#define LINF ((1LL << 62)-1)

typedef uint8_t u8;
typedef uint16_t u16;
typedef uint32_t u32;
typedef uint64_t u64;
typedef int8_t s8;
typedef int16_t s16;
typedef int32_t s32;
typedef int64_t s64;

struct Comb {
    vector<vector<s64> > data;
    Comb(int n) { // O(n^2)
        data = vector<vector<s64> >(n+1,vector<s64>(n+1,1));
        UPTO(i,1,n) {
            FOR(j,i+1) {
                if (!j || j == i) data[i][j] = 1;
                else data[i][j] = data[i-1][j-1] + data[i-1][j];
            }
        }
    }

    s64 ncr(int n, int r) {
        return data[n][r];
    }
};

static inline int ri() {
  int a;
  scanf("%d", &a);
  return a;
}

int int_less(const void *a, const void *b) {
  return (*((const int*)a) - *((const int*)b));
}
int int_greater(const void *a, const void *b) {
  return (*((const int*)b) - *((const int*)a));
}

unsigned int solve(size_t n, unsigned int *a, unsigned int *b) {
	unsigned int res = 0;
	for (size_t i = 0; i < n; i++)
		for (size_t j = 0; j < n; j++)
			res ^= a[i]+b[j];
	return res;
}


int main() {
	size_t n = ri();
	unsigned int a[200000];
	unsigned int b[200000];
	FOR(i,n) a[i] = ri();
	FOR(i,n) b[i] = ri();

	cout << solve(n,a,b) << endl;

    return 0;
}


Compiler output:
a.cc:4:10: fatal error: intrin.h: No such file or directory
    4 | #include <intrin.h>
      |          ^~~~~~~~~~
compilation terminated.
Language: C++

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define MM = 1000000000;
#define mod = MM + 7;
#define INF (ll)1e18
#define pi acos(-1.0)
#define MAX 100005
#define NIL -1
#define rep(i, n) for(int i = 0; i < n; i++)
int dx[4] = {0, 1, 0, -1};
int dy[4] = {1, 0, -1, 0};
int main(){
    int n; cin >> n;
    ll sum = 0;
    ll ans = 0;
    rep(i,n) cin >> a[i];
    rep(i,n){
        cin >> b[i];
        sum += b[i];
    }
    rep(i,n){
        ans += (a[i]^sum);
    }
    cout << ans << endl;
}





Compiler output:
a.cc: In function 'int main()':
a.cc:17:21: error: 'a' was not declared in this scope
   17 |     rep(i,n) cin >> a[i];
      |                     ^
a.cc:19:16: error: 'b' was not declared in this scope
   19 |         cin >> b[i];
      |                ^
a.cc:23:17: error: 'a' was not declared in this scope
   23 |         ans += (a[i]^sum);
      |                 ^
Language: C++

#include <iostream>

using namespace std;

int N;
int A[202020];
int B[202020];


int main(int argc, const char * argv[]) {
    cin >> N;
    for (int i = 0; i < N; ++i)
        cin >> A[i];
    for (int i = 0; i < N; ++i)
        cin >> B[i];

    int r = 0;
    for (int c = 1 << 28; 1 < c; c >>= 1) {
        for (int i = 0; i < N; ++i) {
            A[i] &= (c - 1);
            B[i] &= (c - 1);
        }
        sort(A, A + N);
        sort(B, B + N);

        int cn = 0;
        int j = N;
        for (int i = 0; i < N; ++i) {
            int ai = A[i];
            int ci = c - ai;
            cn += N - j;
            while (0 < j) {
                if (ci <= B[j - 1]) {
                    cn ^= 1;
                    --j;
                } else break;
            }
            if (j == 0) {
                cn += (N - i - 1) * N;
                break;
            }
        }
        if (cn & 1) {
            r |= c;
        }
    }
    long i = lower_bound(A, A + N, 1) - A;
    long j = lower_bound(B, B + N, 1) - B;
    r |= (i * (N - j) + j * (N - i)) & 1;

    cout << r << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main(int, const char**)':
a.cc:23:9: error: 'sort' was not declared in this scope; did you mean 'short'?
   23 |         sort(A, A + N);
      |         ^~~~
      |         short
Language: C

#include <cstdio>
#include <algorithm>

using namespace std;
using ll = long long;

int search(const ll n[], int len, ll comp) {
  int i = 0;
  int j = len;
  while (i < j) {
    int h = (i + j) >> 1;
    if (n[h] < comp) i = h + 1;
    else j = h;
  }
  return i;
}

int main() {
  int n;
  scanf("%d", &n);

  int tmpa[n], tmpb[n];
  for (int i = 0; i < n; i++) scanf("%d", &tmpa[i]);
  for (int i = 0; i < n; i++) scanf("%d", &tmpb[i]);

  ll ans = 0;
  for (int bit = 0; bit < 29; bit++) {
    ll t = 1 << bit;
    ll a[n], b[n];
    for (int i = 0; i < n; i++) {
      a[i] = tmpa[i] % (2 * t);
      b[i] = tmpb[i] % (2 * t);
    }
    sort(b, b + n);

    int c = 0;
    for (int i = 0; i < n; i++) {
      int c1 = search(b, n, t - a[i]);
      int c2 = search(b, n, 2 * t - a[i]);
      int c3 = search(b, n, 3 * t - a[i]);
      int c4 = search(b, n, 4 * t - a[i]);
      c = (c + c2 - c1 + c4 - c3) % 2;
    }

    if (c == 1) ans += t;
  }

  printf("%lld\n", ans);
  return 0;
}


Compiler output:
main.c:1:10: fatal error: cstdio: No such file or directory
    1 | #include <cstdio>
      |          ^~~~~~~~
compilation terminated.
Language: C++

/*
title:

url:
*/

#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <functional>
#include <queue>
#include <limits>
#include <string>
#include <utility>
#include <cstring>
#include <map>
#include <cmath>
#include <iterator>

using namespace std;

#define REP(i, n) for (int i = 0; i < (n); i++)
#define INF 1000000007
#define int long long

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

int main()
{
    int n;
    cin >> n;
    int a[n], b[n];
    REP(i, n)
    {
        cin >> a[i];
    }
    REP(i, n)
    {
        cin >> b[i];
    }
    int ans = 0;

    int tmpb[28][n];
    for (int i = 0; i < 28; i++)
    {
        int bpow = (1 << i);
        for (int j = 0; j < n; j++)
        {
            tmpb[i][j] = b[j] % (bpow * 2);
        }
        sort(tmpb[i], tmpb[i] + n);
    }

    for (int i = 0; i < 28; i++)
    {
        int bitsum = 0;
        for (int j = 0; j < n; j++)
        {
            int bpow = (1 << i);
            int tmpa = a[j] % (2 * bpow);
            //両方ともlower_boundでいい（以上、未満）
            //distanceを用いる方法もある。
            bitsum += lower_bound(tmpb[i], tmpb[i] + n, 2 * bpow - tmpa) -
                      lower_bound(tmpb[i], tmpb[i] + n, bpow - tmpa);
            bitsum += lower_bound(tmpb[i], tmpb[i] + n, 4 * bpow - tmpa) -
                      lower_bound(tmpb[i], tmpb[i] + n, 3 * bpow - tmpa);
            bitsum %= 2;
        }
        ans |= (bitsum << i);
    }
    cout << ans << endl;
}

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

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

using namespace std;
int test(){
    int a[5];
    for(int i = 0; i <5; i++){
        a[i] = i * 2;
    }
    cout << lower_bound(a, a+5, 1) - a << endl;
    cout << upper_bound(a, a+5, 4) - a << endl;
    return 0;
}

int main(){
    int N,i,j,k;
    cin >> N;
    int a[N], b[N];
    for(i = 0; i < N; i++){
        cin >> a[i];
    }
    for(i = 0; i < N; i++){
        cin >> b[i];
    }

    int ans = 0;
    for(k = 0; k < 30; k++){
        int a1[N], b1[N];
        for( j = 0; j < N; j++){
            a1[j] = a[j] % int(pow(2,k+1));
            b1[j] = b[j] % int(pow(2,k+1));
        }
        int T = pow(2, k);
        sort(b1, b1+N);
        int count = 0;
        for(j = 0; j < N; j++){
            int pos_1 = lower_bound(b1, b1+N, T - a1[j]) - b1;
            int pos_2 = upper_bound(b1, b1+N, 2 * T - a1[j] - 1) - b1;
            int pos_3 = lower_bound(b1, b1+N, 3 * T - a1[j]) - b1;
            int pos_4 = upper_bound(b1, b1+N, 4 * T - a1[j] - 1) - b1;
            //cout << pos_1 << pos_2 << pos_3 << pos_4 << endl;
            count += pos_2 - pos_1 + pos_4 - pos_3;


Compiler output:
a.cc: In function 'int main()':
a.cc:44:52: error: expected '}' at end of input
   44 |             count += pos_2 - pos_1 + pos_4 - pos_3;
      |                                                    ^
a.cc:38:31: note: to match this '{'
   38 |         for(j = 0; j < N; j++){
      |                               ^
a.cc:44:52: error: expected '}' at end of input
   44 |             count += pos_2 - pos_1 + pos_4 - pos_3;
      |                                                    ^
a.cc:29:28: note: to match this '{'
   29 |     for(k = 0; k < 30; k++){
      |                            ^
a.cc:44:52: error: expected '}' at end of input
   44 |             count += pos_2 - pos_1 + pos_4 - pos_3;
      |                                                    ^
a.cc:17:11: note: to match this '{'
   17 | int main(){
      |           ^
Language: C++

#include <iostream>

using nanespace std;

int A[200000];
int B[200000];
int carry[32];

int main() {
  int N;
  cin >> N;
  
  for (int i = 0; i < N; ++i) {
    cin >> A[i];
  }
  for (int i = 0; i < N; ++i) {
    cin >> B[i];
    int t = B[i];
    for (int j = 0; j < 32; ++j) {
      carry[j] ^= t >> j & 1;
    }
  }
  
  unsigned int ans = 0;
  if (N & 1) {
    for (int i = 0; i < N; ++i) {
      ans ^= A[i];
    }
    for (int i = 0; i < N; ++i) {
      ans ^= B[i];
    }
  }
  
  for (int i = 0; i < 32; ++i) {
    if (carry[i] ^ 1) continue;
    
    for (int j = 0; j < N; ++j) {
      unsigned int k = 1 << i;
      unsigned int a = A[i];
      k |= k << 1 & a;
      a &= a << 1;
      k |= k << 2 & a;
      a &= a << 2;
      k |= k << 4 & a;
      a &= a << 4;
      k |= k << 8 & a;
      a &= a << 8;
      k |= k << 16 & a;
      
      ans ^= k ^ (1 << i);
    }
  }
  
  cout << ans << endl;
  
  return 0;
}

Compiler output:
a.cc:3:7: error: expected nested-name-specifier before 'nanespace'
    3 | using nanespace std;
      |       ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:11:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
   11 |   cin >> N;
      |   ^~~
      |   std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:54:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   54 |   cout << ans << 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:54:18: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   54 |   cout << ans << endl;
      |                  ^~~~
      |                  std::endl
In file included from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include <iostream>
#include <vector>

#define bound_range(vec, lower, upper) (lower_bound(vec.begin(), vec.end(), upper) - lower_bound(vec.begin(), vec.end(), lower))

typedef long long ll;

using namespace std;

int main() {
    int n;
    ll ans = 0;
    cin >> n;
    vector<ll> a(n), b(n);
    for (int i = 0; i < n; ++i) cin >> a.at(i);
    for (int i = 0; i < n; ++i) cin >> b.at(i);
    for (int i = 0; i < 30; ++i) {
        ll digit = 1ll << i;
        vector<ll> m(b);
        for (vector<ll>::size_type j = 0; j < m.size(); ++j) m.at(j) %= digit * 2;
        sort(m.begin(), m.end());
        int cnt = 0;
        for (vector<ll>::size_type j = 0; j < m.size(); ++j) {
            ll da = a.at(j) % (digit * 2);
            cnt += bound_range(m, digit - da, digit * 2 - da) + bound_range(m, digit * 3 - da, digit * 4 - da);
        }
        if (cnt % 2) ans += digit;
    }

    cout << ans << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:9: error: 'sort' was not declared in this scope; did you mean 'short'?
   21 |         sort(m.begin(), m.end());
      |         ^~~~
      |         short
Language: C++

#include <bits/stdc++.h>

using namespace std;

typedef long long int;

int main(){
  cin.tie(0);
  ios_base::sync_with_stdio(false);
  int N; cin >> N;
  int a[N], b[N];
  for(int i=0;i<N;i++) cin >> a[i];
  for(int i=0;i<N;i++) cin >> b[i];
  int ans = 0;
  for(int i=0;i<30;i++){
    int bitb[N];
    for(int x=0;x<N;x++){
      // b[x] mod 2^(b+1)
      bitb[x] = b[x] %(1 << (i+1));
    }
    sort(bitb, bitb+N);
    int tot = 0;
    for(int x=0;x<N;x++){
      int bita = a[x] %(1 << (i+1));
      // count [2^i - a_i, 2*2^i - a_i)
      tot += lower_bound(bitb, bitb+N, 2*(1 << i) - bita) - lower_bound(bitb, bitb+N, (1 << i) - bita);
      // count [3*2^i - a_i, 4*2^i - a_i)
      tot += lower_bound(bitb, bitb+N, 4*(1 << i) - bita) - lower_bound(bitb, bitb+N, 3*(1 << i) - bita);
    }
    // cout << tot << endl;
    if(tot %2 == 1) ans = ans + (1 << i);
  }
  cout << ans << endl;
}

Compiler output:
a.cc:5:19: error: declaration does not declare anything [-fpermissive]
    5 | typedef long long int;
      |                   ^~~
Language: C++

#include<iostream>
#include<algorithm>
#include<cmath>
using namespace std;
typedef long long ll;

int main(){
  int N;
  cin >> N;
  ll a[N];
  ll b[N];
  ll temp_a[N], temp_b[N];

  for(int i=0;i<N;i++){
    cin >> a[i];
  }
  for(int i=0; i<N;i++){
    cin >> b[i];
  }
  ll ans = 0;

  for(int k =1; k<30;k++){
    ll t = 1<<K;
    for(int i =0; i<N; i++){
      temp_a[i] = a[i] % (2*t);
      temp_b[i] = b[i] % (2*t);
    }
    sort(temp_b, temp_b+N);
    ll cnt = 0;
    for(int i=0;i<N;i++){
      //ソートされたtemp_bから4t-a[i]以上の値が現れる最初の位置 - 3t-a[i] 以上の値が現れる最初の位置　= 3t-a[i] ~ 4t-a[i]の間にあるbの個数
      cnt += lower_bound(temp_b, temp_b+N, 4*t-a[i]) - lower_bound(temp_b, temp_b+N, 3*t-a[i]);
      cnt += lower_bound(temp_b, temp_b+N, 2*t-a[i]) - lower_bound(temp_b, temp_b+N, 1*t-a[i]);
    }
    if(cnt % 2 == 1){
      ans += t;
    }
  }
  cout << ans << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:23:15: error: 'K' was not declared in this scope
   23 |     ll t = 1<<K;
      |               ^
Language: C++

#include<iostream>
#include<algorithm>
using namespace std
typedef long long ll;

int main(){
  int N;
  cin >> N;
  ll a[200000];
  ll b[200000];
  ll temp_a[200000], temp_b[200000];

  for(int i=0;i<N;i++){
    cin >> a[i];
  }
  for(int i=0; i<N;i++){
    cin >> b[i];
  }
  ll ans = 0;
  for(int k =0; k<30;k++){
    ll t = pow(2,k);
    for(int i =0; i<N; i++){
      temp_a[i] = a[i] % (2*t);
      temp_b[i] = b[i] % (2*t);
    }
    sort(temp_b, temp_b+N);
    ll cnt = 0;
    for(int i=0;i<30;k++){
      //ソートされたtemp_bから4t-a[i]以上の値が現れる最初の位置 - 3t-a[i] 以上の値が現れる最初の位置　= 3t-a[i] ~ 4t-a[i]の間にあるbの個数
      cnt += lower_bound(temp_b, temp_b+N, 4*t-a[i]) - lower_bound(temp_b, temp_b+N, 3*t-a[i]);
      cnt += lower_bound(temp_b, temp_b+N, 2*t-a[i]) - lower_bound(temp_b, temp_b+N, 1*t-a[i]);
    }
    if(cnt % 2 == 1){
      ans += t;
    }
  }
  cout << ans << endl;
}

Compiler output:
a.cc:3:20: error: expected ';' before 'typedef'
    3 | using namespace std
      |                    ^
      |                    ;
    4 | typedef long long ll;
      | ~~~~~~~             
a.cc: In function 'int main()':
a.cc:21:12: error: 'pow' was not declared in this scope
   21 |     ll t = pow(2,k);
      |            ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int p0,p1,q0,q1,v,pos;
long long ans=0,s1,s2;
int a[200000],b[200000],arr[28][200000],t[200000];
int main()
{
	int i,j,n;
	scanf("%d",&n);
	for(i=0;i<n;i++)
		scanf("%d",&a[i]);
	for(i=0;i<n;i++)
		scanf("%d",&b[i]);	
	for(i=0;i<28;i++)
	{
		p0=p1=q0=q1=0;
		for(j=0;j<n;j++)
		{
			((a[j]>>i)&0x01)?p1++:p0++;
		}
		for(j=0;j<n;j++)
		{
			((b[j]>>i)&0x01)?q1++:q++;	
		}
		s1=(p0*q1);
		s2=(p1*q0);
		ans^=(s1%2+s2%2)%2;
	}
	//生成第一排arr[28][n]的
	for(i=0;i<28;i++)
	{
		for(j=0;j<n;j++)
		{
			if(i==0)
				arr[i][j]=0x01&a[j];
			else
				arr[i][j]=arr[i-1][j]|((1<<i)&a[j]);
		}
	} 
	for(i=0;i<28;i++)
		sort(arr[i],arr[i]+n);
	for(i=0;i<28;i++)
	{
		for(j=0;j<n;j++)
		{
			t[j]|=(1<<i)&b[j];
			v=(1<<(i+1))-t[j];	
			pos=lower_bound(arr[i],arr[i]+n,v)-arr[i];
			ans^=((n-pos)%2)<<(i+1);
		}
	}	
	printf("%lld",ans);	 
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:23:47: error: 'q' was not declared in this scope
   23 |                         ((b[j]>>i)&0x01)?q1++:q++;
      |                                               ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int a[200000],b[200000];
int arr[28][200000];
int t[200000];
int main()
{
	int i,j,p0,p1,q0,q1,n,v,pos,ans=0,k;
	scanf("%d",&n);
	for(i=0;i<n;i++)
		scanf("%d",&a[i]);
	for(i=0;i<n;i++)
		scanf("%d",&b[i]);
	for(i=0;i<28;i++)
	{
		p0=p1=q0=q1=0;
		for(j=0;j<n;j++)
		{
			if(((a[j]>>i)&1)==1)
				p1++;
			else
				p0++;
		}
		for(j=0;j<n;j++)
		{
			if(((b[j]>>i)&1)==1)
				q1++;
			else
				q0++;
		}
		ans^=((p0*q1)%2+(p1*q0)%2)%2;
	}
	for(i=0;i<28;i++)
	{
		for(j=0;j<28;j++)
		{
			if(i==0)
				arr[i][j]=0x01&a[j];
			else
				arr[i][j]=arr[i-1][j]|((1<<i)&a[j]);
		}
	}
	for(i=0;i<28;i++)
		sort(arr[i],arr[i]+n);
	for(i=0;i<28;i++)
	{
		for(j=0;j<n;j++)
		{
			t[j]|=(1<<j)&b[j];
			v=(1<<(j+1))-t[j];
			pos=low_bound(arr[i],arr[i]+n,v)-arr[i];
			ans^=(((n-pos)%2)<<j+1);
		}
	}
	printf("%d",ans);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:51:29: error: 'low_bound' was not declared in this scope
   51 |                         pos=low_bound(arr[i],arr[i]+n,v)-arr[i];
      |                             ^~~~~~~~~
Language: C++

#include <vector>
#include <algorithm>
using namespace std;
int main(){
	int n,i,r=0,b;
	scanf("%d",&n);
	vector<int>A(n),B(n);
	for(i=0;i<n;i++)scanf("%d",&A[i]);
	for(i=0;i<n;i++)scanf("%d",&B[i]);
	for(b=0;b<29;b++){
		int r0=0,t=1<<b;
		vector<int>a;
		transform(A.begin(),A.end(),back_inserter(a),
			[&](int e){return e%(2*t);}
		);
		for(auto &e_:B){
			int e=e_%(2*t),sgn=-1,q;
			for(q=1;q<=4;sgn=-sgn,q++){
				r0+=sgn*distance(a.begin(),upper_bound(a.begin(),a.end(),-q*t+e));
			}
		}
		r^=r0*t;
	}
	printf("%d\n",r);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'scanf' was not declared in this scope
    6 |         scanf("%d",&n);
      |         ^~~~~
a.cc:24:9: error: 'printf' was not declared in this scope
   24 |         printf("%d\n",r);
      |         ^~~~~~
a.cc:3:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
    2 | #include <algorithm>
  +++ |+#include <cstdio>
    3 | using namespace std;
Language: C++

#include<cstdio>
using namespace std;
long long a[2001],b[2001];
bool f(int i,int j,int g)
{
if(g==0)return false;
return (((a[i]>>(g-1)&1)+(b[j]>>(g-1)&1)+int(f(i,j,g-1)))>1);
}
int main()
{
long long n;
long long g,i,j,c1,ans=0;
cin>>n;
for(i=0;i<n;i++)cin>>a[i];
for(i=0;i<n;i++)cin>>b[i];
for(g=0;g<29;g++)
{
c1=0;
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
{
if(((a[i]>>g&1)+(b[j]>>g&1)+f(i,j,g))&1)c1++; 
}
}
if(c1%2==1)ans+=1<<g;
}
cout<<ans;
/*****Test Value*****/
/*puts("\n=====Test Value=====");
for(g=0;g<29;g++)
for(i=0;i<n;i++)
for(j=0;j<n;j++)
printf("i=%d,j=%d,g=%d,f(i,j,g)=%d\n",i,j,g,int(f(i,j,g)));
/******Test End******/
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:1: error: 'cin' was not declared in this scope
   13 | cin>>n;
      | ^~~
a.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    1 | #include<cstdio>
  +++ |+#include <iostream>
    2 | using namespace std;
a.cc:28:1: error: 'cout' was not declared in this scope
   28 | cout<<ans;
      | ^~~~
a.cc:28:1: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
Language: C++

#include<iostream>
#include<cstring>
#include<cstdio>
using namespace std;

int n;
const int maxn=1<<29;
int used[maxn];
int a[200002],b[200002];
int maxa,maxb;

int main(){
	scanf("%d", &n);
	memset(used,0,sizeof(used));
	for (int i=0;i<n;i++) scanf("%d", &a[i]),maxa=max(maxa,a[i]);
	for (int i=0;i<n;i++) {
		scanf("%d", &b[i]);
		maxb=max(maxb,b[i]);
		for (int j=0;j<n;j++) used[a[j]+b[i]]++;
	}
	int res;
	for (int i=0;i<maxa+maxb+1;i++){
		if (used[i]%2) res^=i;
	}
	cout<<res<<endl;
	return 0;
}

Compiler output:
/tmp/ccc1qgLl.o: in function `main':
a.cc:(.text+0x5b): relocation truncated to fit: R_X86_64_PC32 against symbol `a' defined in .bss section in /tmp/ccc1qgLl.o
a.cc:(.text+0x89): relocation truncated to fit: R_X86_64_PC32 against symbol `a' defined in .bss section in /tmp/ccc1qgLl.o
a.cc:(.text+0x96): relocation truncated to fit: R_X86_64_PC32 against symbol `maxa' defined in .bss section in /tmp/ccc1qgLl.o
a.cc:(.text+0xa6): relocation truncated to fit: R_X86_64_PC32 against symbol `maxa' defined in .bss section in /tmp/ccc1qgLl.o
a.cc:(.text+0xd5): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccc1qgLl.o
a.cc:(.text+0x103): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccc1qgLl.o
a.cc:(.text+0x110): relocation truncated to fit: R_X86_64_PC32 against symbol `maxb' defined in .bss section in /tmp/ccc1qgLl.o
a.cc:(.text+0x120): relocation truncated to fit: R_X86_64_PC32 against symbol `maxb' defined in .bss section in /tmp/ccc1qgLl.o
a.cc:(.text+0x13d): relocation truncated to fit: R_X86_64_PC32 against symbol `a' defined in .bss section in /tmp/ccc1qgLl.o
a.cc:(.text+0x154): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccc1qgLl.o
a.cc:(.text+0x1de): additional relocation overflows omitted from the output
collect2: error: ld returned 1 exit status
Language: C

#include<bits/stdc++.h>
using namespace std;
 
typedef long long int ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector< pair<int,int> > vpii;
typedef vector< pair<ll,ll> > vpll;
typedef vector< vector<int> > matrix;
 
#define SET(Ar,val) memset(Ar,val,sizeof(Ar))
#define rep(i,val,n)  for(int i=val;i<n;i++)
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define LMAX LONG_LONG_MAX
#define LMIN LONG_LONG_MIN
#define IMAX INT_MAX
#define IMIN INT_MIN
#define M 1000000007
 
/*--------------------------------------------------------------------------------------------------------------------------------*/
 
template <class T> T modpower(T a,T b,T MOD)
{
    T ans=1;
    while(b!=0)
    {
        if(b%2==1)
        ans=(ans*a)%MOD;
        a=(a*a)%MOD;
        b/=2;
    }
    return ans;
}
 
void init()
{
    int N,mx = -1;
    cin >> N;
    int a[N+5],b[N+5];
    rep(i,0,N)
    {
        cin >> a[i];
        mx = max(mx,a[i]);
    }
    rep(i,0,N)
    {
        cin >> b[i];
        mx = max(mx,b[i]);
    }
    int ans = 0,d, u = log(mx);
    vi a1,b1;
    rep(i,0,30)
    {
        d = (1<<(i+1));
        a1.clear();
        b1.clear();
        rep(i,0,N)
        {
            a1.pb(a[i]%d);
            b1.pb(b[i]%d);
        }
        sort(b1.begin(),b1.end());
 
        /*for(auto it : b1)
            cout << it << endl ;*/
 
        rep(j,0,N)
        {
            int v = 0;
            int id1 = lower_bound(b1.begin(),b1.end(),d/2 - a1[j]) - b1.begin();
            int id2 = upper_bound(b1.begin(),b1.end(),d - a1[j] - 1) - b1.begin() - 1;
            if(id1 < N && id2>=id1)
                v += (id2-id1+1);
 
            int id3 = lower_bound(b1.begin(),b1.end(),(3*(d/2)) - a1[j]) - b1.begin();
            int id4 = upper_bound(b1.begin(),b1.end(),2*d - a1[j] - 1) - b1.begin() - 1;
            if(id3 < N && id4>=id3)
                v += (id4-id3+1);
 
            //cout << id1 << " " << id2 << " " << id3 << " " << id4 << endl ;
 
            if(v%2 == 1)
                ans^=(d/2);// cout <<"asd" << ans << endl;
         }
    }
    cout << ans << endl ;
}
 
int main()
{
    clock_t time1=clock();
	/*#ifndef ONLINE_JUDGE
	freopen("abc_091.in","r",stdin);
	#else
	//ONLINE_JUDGE
	#endif*/
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
    init();
    clock_t time2 = clock();
    cerr <<"Time: " <<(double)(time2-time1)/CLOCKS_PER_SEC <<" seconds" <<endl;
	return 0;
}

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

#include <stdio.h>

#define FOR(to) for (int i = 0; i < to; i++)

void quick(long a[], int left, int right)
{
    int i, j, s
    long t;

    if (left < right) {
        s = a[left];
        i = left; j = right + 1;

        while (1) {
            while (a[++i] < s)
                ;
            while (a[--j] > s)
                ;
            if (i >= j) break;
            t = a[i]; a[i] = a[j]; a[j] = t;
        }
        a[left] = a[j]; a[j] = s;
        quick(a, left, j - 1); quick(a, j + 1, right);
    }
}

int lower_bound(long val, long list[], int N)
{
    int low = 0;
    int upper = N - 1;
    if (list[N - 1] < val) return N;
    while (upper - low > 1) {
        int mid = (low + upper) / 2;
        if (list[mid] < val) low = mid;
        else upper = mid;
    }
    if (list[low] < val) return upper;
    else return low;
}

int main(void)
{
    int N;
    scanf("%d", &N);
    long a[N], b[N];
    FOR(N) scanf("%ld", &a[i]);
    FOR(N) scanf("%ld", &b[i]);
    long ans = 0;
    long A[N], B[N];
    

    FOR(28) {
        int count = 0;
        long T = 1 << i;
        FOR(N) A[i] = a[i] % (2 * T);
        FOR(N) B[i] = b[i] % (2 * T);
        quick(B, 0, N - 1);
        // FOR(N) printf("%ld ", A[i]);
        // putchar('\n');
        // FOR(N) printf("%ld ", B[i]);
        // putchar('\n');
        
        FOR(N) {
            int a1 = lower_bound(T - A[i], B, N);
            int a2 = lower_bound(2 * T - A[i], B, N);
            int a3 = lower_bound(3 * T - A[i], B, N);
            int a4 = lower_bound(4 * T - A[i], B, N);
            printf("a1 %d a2 %d a3 %d a4 %d\n", a1, a2, a3, a4);
            count += a2 - a1 + a4 - a3;
        }
        // printf("%d\n", count);
        if (count % 2) ans += T;
    }
    
    printf("%ld", ans);
}

Compiler output:
main.c: In function 'quick':
main.c:8:5: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'long'
    8 |     long t;
      |     ^~~~
main.c:11:9: error: 's' undeclared (first use in this function)
   11 |         s = a[left];
      |         ^
main.c:11:9: note: each undeclared identifier is reported only once for each function it appears in
main.c:20:13: error: 't' undeclared (first use in this function)
   20 |             t = a[i]; a[i] = a[j]; a[j] = t;
      |             ^
Language: C++

#include <iostream>

using namespace std;

typedef long long ll;

ll a[200001];
ll b[200001];
ll c[200001];

int main()
{
    int N;
    cin >> N;
    for (int i = 0; i < N; ++i)
    {
        cin >> a[i];
    }
    for (int i = 0; i < N; ++i)
    {
        cin >> b[i];
    }

    int ans = 0;
    for (int k = 0; k < 29; ++k)
    {
        int T = 1 << k;
        for (int i = 0; i < N; ++i) c[i] = b[i] % (T*2);
        sort(c, c+N);

        int tmp = 0;
        for (int i = 0; i < N; ++i)
        {
            int aa = a[i] % (T*2);
            int t  = lower_bound(c, c+N, T - aa) - c;
            int t2 = lower_bound(c, c+N, 2*T - aa) - c;
            int t3 = lower_bound(c, c+N, 3*T - aa) - c;
            tmp += (t2 - t) + (N - t3);
        }
        if (tmp % 2 != 0) ans += T;
    }
    cout << ans << endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:29:9: error: 'sort' was not declared in this scope; did you mean 'short'?
   29 |         sort(c, c+N);
      |         ^~~~
      |         short
Language: C

#include<stdio.h>
#include<math.h>


int main(void)
{
  long long int N;
  scanf("%lld", &N);
  long long int a[N], b[N];
  for (int i = 0; i < N; i++) {
    scanf("%lld", &a[i]);
  }
  for (int i = 0; i < N; i++) {
    scanf("%lld", &b[i]);
  }
  
  //２進数表記
  int t[N*N][29];
  for (long int i = 0; i < N; i++) {
    for (long int j = 0; j < N; j++) {
      long long int tmp = a[i] + b[i];
      for (int l = 0; l < 29; l++) {
        t[i*j][l] = tmp / pow(2,29-l);
        tmp = tmp % pow(2,29-l);
      }
    }
  }
  
  int u[29];
  
  for (int l = 0; l < 29; l++) {
    u[l] = 0;
    for (long long int i = 0; i < N*N; i++) {
      u[l] += t[i][l];
    }
    if (u[l] % 2 == 0) u[l] = 0;
    else u[l] = 1;
  }
  
  long int ans = 0;
  for (int i = 0; i < 29; i++) {
    ans = u[i]* (long long int) pow(2, 29-i);
  }
  printf("%ld", ans);
  
  return 0;
}








Compiler output:
main.c: In function 'main':
main.c:24:19: error: invalid operands to binary % (have 'long long int' and 'double')
   24 |         tmp = tmp % pow(2,29-l);
      |                   ^ ~~~~~~~~~~~
      |                     |
      |                     double
Language: C

#include<stdio.h>
#include<math.h>


int main(void)
{
  long long int N;
  scanf("%lld", &N);
  long long int a[N], b[N];
  for (int i = 0; i < N; i++) {
    scanf("%lld", &a[i]);
  }
  for (int i = 0; i < N; i++) {
    scanf("%lld", &b[i]);
  }
  
  //２進数表記
  int t[N*N][29];
  for (long int i = 0; i < N; i++) {
    for (long int j = 0; j < N; j++) {
      long long int tmp = a[i] + b[i];
      for (int l = 0; l < 29; l++) {
        t[i*j][l] = tmp / pow(2,29-l);
        tmp = tmp % pow(2,29-l);
      }
    }
  }
  
  int u[29];
  
  for (int l = 0; l < 29; l++) {
    u[l] = 0;
    for (long long int i = 0; i < N*N; i++) {
      u[l] += t[i][l];
    }
    if (u[l] % 2 == 0) u[l] = 0;
    else u[l] = 1;
  }
  
  long int ans = 0;
  for (int i = 0; i < 29; i++) {
    ans = u[i]*pow(2, 29-i);
  }
  printf("%ld", ans);
  
  return 0;
}








Compiler output:
main.c: In function 'main':
main.c:24:19: error: invalid operands to binary % (have 'long long int' and 'double')
   24 |         tmp = tmp % pow(2,29-l);
      |                   ^ ~~~~~~~~~~~
      |                     |
      |                     double
Language: C

#include<stdio.h>
#include<math.h>


int main(void)
{
  long long int N;
  scanf("%d", &N);
  long long int a[N], b[N];
  for (int i = 0; i < N; i++) {
    scanf("%lld", &a[i]);
  }
  for (int i = 0; i < N; i++) {
    scanf("%lld", &b[i]);
  }
  
  //２進数表記
  int t[N*N][29];
  for (long int i = 0; i < N; i++) {
    for (long int j = 0; j < N; j++) {
      long long int tmp = a[i] + b[i];
      for (int l = 0; l < 29; l++) {
        t[i*j][l] = tmp / pow(2,29-l);
        tmp = tmp % pow(2,29-l);
      }
    }
  }
  
  int u[29];
  
  for (int l = 0; l < 29; l++) {
    u[l] = 0;
    for (long long int i = 0; i < N*N; i++) {
      u[l] += t[i][l];
    }
    if (u[l] % 2 == 0) u[l] = 0;
    else u[l] = 1;
  }
  
  long int ans = 0;
  for (int i = 0; i < 29; i++) {
    ans = u[i]*pow(2, 29-i);
  }
  printf("%ld", ans);
  
  return 0;
}








Compiler output:
main.c: In function 'main':
main.c:24:19: error: invalid operands to binary % (have 'long long int' and 'double')
   24 |         tmp = tmp % pow(2,29-l);
      |                   ^ ~~~~~~~~~~~
      |                     |
      |                     double
Language: C++

#include<algorithm>
#include<iostream>
#include<cstdlib>
#include<cstring>
#include<cstdio>
#define Rint register int
#define Temp template<typename T>
#define mem(a,b) memset(a,(b),sizeof(a))
typedef long long LL; using namespace std; Temp inline void read(T &x){ x=0;T w=1,ch=getchar(); while(!isdigit(ch)&&ch!='-')ch=getchar(); if(ch=='-')w=-1,ch=getchar(); while(isdigit(ch))x=(x<<3)+(x<<1)+(ch^'0'),ch=getchar(); x=x*w; }

const int maxn=200000+10;

include<vector>

vector<LL>q[2];
LL x[maxn],y[maxn];
LL bit[100];
int n;

LL solve() { LL ans=0;
for(LL i=0;i<62;i++)
{
LL tot=0;
q[0].clear();q[1].clear();
for(LL j=1;j<=n;j++)
q[(x[j]>>i)&1].push_back(x[j]);
for(LL j=0;j<q[0].size();j++)
x[++tot]=q[0][j];
for(LL j=0;j<q[1].size();j++)
x[++tot]=q[1][j];
tot=0;
q[0].clear();q[1].clear();
for(LL j=1;j<=n;j++)
q[(y[j]>>i)&1].push_back(y[j]);
for(LL j=0;j<q[0].size();j++)
y[++tot]=q[0][j];
for(LL j=0;j<q[1].size();j++)
y[++tot]=q[1][j];
LL len1=1,len2=1,len3=1;
LL limit1=1LL<<i;
LL limit2=1LL<<(i+1);
LL all=(1LL<<(i+1))-1; LL sum=0; for(LL i=n;i>=1;i--)
{
while((((x[i]&all)+(y[len1]&all))<limit1) && (len1<=n)) len1++; while((((x[i]&all)+(y[len2]&all))<limit2) && (len2<=n)) len2++;
while(((x[i]&all)+(y[len3]&all)<limit1+limit2) && (len3<=n)) len3++; sum+=n-(len1-1-len2+1+len3-1);
} if(sum&1) ans+=bit[i];
} return ans;
}

int main()
{
bit[0]=1;
for(LL i=1;i<=61;i++)bit[i]=bit[i-1]*2; read(n); for(LL i=1;i<=n;i++)read(x[i]); for(LL i=1;i<=n;i++)read(y[i]);

printf("%lld\n",solve());
return 0;
}

Compiler output:
a.cc:13:1: error: 'include' does not name a type
   13 | include<vector>
      | ^~~~~~~
a.cc: In function 'LL solve()':
a.cc:24:1: error: 'q' was not declared in this scope
   24 | q[0].clear();q[1].clear();
      | ^
Language: C++

int main() {
	vector<int> a;
	int n,load;
	int ans;
	int lans;
	cin >> n;
	for (int i = 0; i < n; i++) {
		cin >> load;
		a.push_back(load);
	}
	for (int j = 0; j < n; j++) {
		cin >> load;
		for (int i = 0; i < n; i++) {
			if (i == 0) {
				lans = a[i] + load;
			}
			else {
				lans = lans ^ (a[i] + load);
			}
		}
		if (j == 0) {
			ans = lans;
		}
		else {
			ans = ans ^ lans;
		}
	}

	cout << ans;
	cin >> ans;
	return 0;
	
}


Compiler output:
a.cc: In function 'int main()':
a.cc:2:9: error: 'vector' was not declared in this scope
    2 |         vector<int> a;
      |         ^~~~~~
a.cc:2:16: error: expected primary-expression before 'int'
    2 |         vector<int> a;
      |                ^~~
a.cc:6:9: error: 'cin' was not declared in this scope
    6 |         cin >> n;
      |         ^~~
a.cc:9:17: error: 'a' was not declared in this scope
    9 |                 a.push_back(load);
      |                 ^
a.cc:15:40: error: 'a' was not declared in this scope
   15 |                                 lans = a[i] + load;
      |                                        ^
a.cc:18:48: error: 'a' was not declared in this scope
   18 |                                 lans = lans ^ (a[i] + load);
      |                                                ^
a.cc:29:9: error: 'cout' was not declared in this scope
   29 |         cout << ans;
      |         ^~~~
Language: Java

import java.util.Scanner;  
  
public class Q2_异或 {  
    public static void main(String[] args) {  
        trieNode root = new trieNode(-1);  
        Scanner sc = new Scanner(System.in);  
        int n = sc.nextInt();  
        int m = sc.nextInt();  
        int[] items = new int[n];  
        for(int i=0; i<n; i++){  
            items[i] = sc.nextInt();  
            insert(root, items[i]);  
        }  
        long result = 0;  
        for(int num : items){  
            result  += query(root, num, m, 31);
        }  
        System.out.println(result/2);  
    }  
  
    public static void insert(trieNode root, int number){  
        trieNode current = root;  
        for(int i=31; i>=0; i--){
            int digit = (number>>i)&1;  
            if(current.next[digit]==null){  
                current.next[digit] = new trieNode(digit);  
            }  
            current = current.next[digit];  
            current.count++;  
        }  
    }  
      
    public static int query(trieNode root, int a, int m, int k){  
        if(root == null){  
            return 0;  
        }  
        trieNode current = root;  
        for(int i=k; i>=0; i--){  
            int aDigit = (a>>i)&1;  
            int mDigit = (m>>i)&1;  
            if(aDigit == 1 && mDigit == 1){  
                if(current.next[0] == null){  
                    return 0;  
                }else{  
                    current = current.next[0];
                }  
            }else if(aDigit == 0 && mDigit ==1){  
                if(current.next[1] == null){  
                    return 0;  
                }else {  
                    current = current.next[1];  
                }  
            }else if(aDigit == 0 && mDigit == 0){  
                int p = query(current.next[0], a, m, i-1);  
                int q = (current.next[1]==null?0:current.next[1].count);  
                return p+q;  
            }else if(aDigit == 1 && mDigit == 0){  
                int p = query(current.next[1], a, m, i-1);  
                int q = (current.next[0]==null?0:current.next[0].count);  
                return p+q;  
            }  
        }         
        return 0;  
    }     
}  
  
class trieNode{  
    trieNode[] next = new trieNode[2];
    int count = 0; 
    int digit = 0;  
    public trieNode(int digit) {  
        this.digit = digit;  
    }  
}  

Compiler output:
Main.java:3: error: class Q2_?? is public, should be declared in a file named Q2_??.java
public class Q2_?? {  
       ^
1 error
Language: C++

#include <iostream>
#include <string>
#include <bitset>

using namespace std;

int main()
{
	int N;
	int a[200000],b[200000];
	bitset<28> xor = static_cast<bitset<28>>(0);

	cin >> N;
	for (int i = 0; i < N; i++) {
		cin >> a[i];
	}
	for (int i = 0; i < N; i++) {
		cin >> b[i];
	}
	
	for (int i = 0; i < N; i++) {
		for (int j = 0; j < N; j++) {
			xor = xor^static_cast<bitset<28>>(a[i] + b[j]);
		}
	}

	cout << xor.to_ulong() << endl;

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:20: error: expected unqualified-id before 'xor' token
   11 |         bitset<28> xor = static_cast<bitset<28>>(0);
      |                    ^~~
a.cc:23:25: error: expected primary-expression before 'xor' token
   23 |                         xor = xor^static_cast<bitset<28>>(a[i] + b[j]);
      |                         ^~~
a.cc:23:29: error: expected primary-expression before '=' token
   23 |                         xor = xor^static_cast<bitset<28>>(a[i] + b[j]);
      |                             ^
a.cc:23:31: error: expected primary-expression before 'xor' token
   23 |                         xor = xor^static_cast<bitset<28>>(a[i] + b[j]);
      |                               ^~~
a.cc:23:34: error: expected primary-expression before '^' token
   23 |                         xor = xor^static_cast<bitset<28>>(a[i] + b[j]);
      |                                  ^
a.cc:27:17: error: expected primary-expression before 'xor' token
   27 |         cout << xor.to_ulong() << endl;
      |                 ^~~
a.cc:27:20: error: expected primary-expression before '.' token
   27 |         cout << xor.to_ulong() << endl;
      |                    ^
Language: C++

#include <iostream>
#include <vector>
#include <set>
#include <map>
#include <algorithm>
#include <string>
#include <cstring>
#include <cstdlib>
#include <cstdio>

using namespace std;


long long main()
{
    long long n;
    cin >> n;
    vector<long long> a, b;
    long long num;
    for(long long i=0;i<n;i++) {
        cin >> num;
        a.push_back(num);
    }
    for(long long i=0;i<n;i++) {
        cin >> num;
        b.push_back(num);
    }
    num=0;
    for(long long i=0;i<n;i++) {
        for(long long j=0;j<n;j++) {
            num ^= a[i]+b[j];
        }
    }
    cout << num;
    return 0;
}


Compiler output:
cc1plus: error: '::main' must return 'int'
Language: Java

let n = read_int()

let ab = Array.init n (fun _ -> Scanf.scanf " %d %d" (fun a b -> a, b))
let cd = Array.init n (fun _ -> Scanf.scanf " %d %d" (fun c d -> c, d))

let list = Array.make n 0
let li = ref 0

let rec f i j p =
  if i = n then p
  else
    let c, d = cd.(i) in
    let rec g j =
      if j < n then (
        let a, b = ab.(j) in
        if a < c then (
          list.(!li) <- b;
          li := !li + 1;
          g (j + 1)
        ) else j
      ) else j in
    let j = g j in
    let rec g k l m =
      if k = !li then l
      else if list.(k) < d && m < list.(k) then g (k + 1) k list.(k)
      else g (k + 1) l m in
    let l = g 0 ~-1 ~-1 in
    if l > -1 then (
      list.(l) <- list.(!li - 1);
      li := !li - 1;
      f (i + 1) j (p + 1)
    ) else f (i + 1) j p

let () =
  Array.sort (fun (x1, _) (x2, _) -> x1 - x2) ab;
  Array.sort (fun (x1, _) (x2, _) -> x1 - x2) cd;
  let ans = f 0 0 0 in
  Printf.printf "%d\n" ans


Compiler output:
Main.java:1: error: unnamed classes are a preview feature and are disabled by default.
let n = read_int()
^
  (use --enable-preview to enable unnamed classes)
Main.java:1: error: ';' expected
let n = read_int()
                  ^
Main.java:18: error: class, interface, enum, or record expected
          li := !li + 1;
          ^
Main.java:19: error: class, interface, enum, or record expected
          g (j + 1)
          ^
Main.java:30: error: class, interface, enum, or record expected
      li := !li - 1;
      ^
Main.java:31: error: class, interface, enum, or record expected
      f (i + 1) j (p + 1)
      ^
Main.java:36: error: class, interface, enum, or record expected
  Array.sort (fun (x1, _) (x2, _) -> x1 - x2) cd;
  ^
Main.java:37: error: ';' expected
  let ans = f 0 0 0 in
             ^
8 errors
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(void){
  int n; cin>>n;
  vector<pair<int,int>> ab(n),cd(n);
  for(int i=0; i<n; ++i) cin>>ab[i].first>>ab[i].second;
  for(int i=0; i<n; ++i) cin>>cd[i].first>>cd[i].second;
  sort(ab.begin(),ab.end());
  sort(cd.begin(),cd.end());
  int res=0,dx=999999,dy=999999;
  pair<int,int> a(-1,-1);
  unordered_map<int,bool> m1,m2;
  for(int i=0; i<n; ++i){
    for(int j=0; j<n; ++j){
      int d1=cd[i].first-ab[j].first;
      int d2=cd[i].second-ab[j].second;
      //printf("%d %d\n",d1,d2);
      if(d1>0&&d2>0) if(d1+d2<dx+dy) if(m1[i]==false&&m2[j]==false){
        a=make_pair(i,j);
        dx=d1,dy=d2;
      }
    }
    if(a.first>=0&&a.second>=0){ ++res; m1[a.first]=true,m2[a.second]=true;}
    dx=999999,dy=999999;
    a=make_pair(-1,-1);
  }
  cout<<res;
  return 0;
}
#include<bits/stdc++.h>
using namespace std;
int main(void){
  int n; cin>>n;
  vector<pair<int,int>> ab(n),cd(n);
  for(int i=0; i<n; ++i) cin>>ab[i].first>>ab[i].second;
  for(int i=0; i<n; ++i) cin>>cd[i].first>>cd[i].second;
  int res=0,dx=999999,dy=999999;
  pair<int,int> a(-1,-1);
  unordered_map<int,bool> m1,m2;
  for(int i=0; i<n; ++i){
    for(int j=0; j<n; ++j){
      int d1=cd[i].first-ab[j].first;
      int d2=cd[i].second-ab[j].second;
      if(d1>0&&d2>0) if(d1+d2<dx+dy) if(m1[i]==false&&m2[j]==false){
        a=make_pair(i,j);
        dx=d1,dy=d2;
      }
    }
    if(a.first>=0&&a.second>=0){ ++res; m1[a.first]=true,m2[a.second]=true;}
    dx=999999,dy=999999;
    a=make_pair(-1,-1);
  }
  cout<<res;
  return 0;
}

Compiler output:
a.cc:32:5: error: redefinition of 'int main()'
   32 | int main(void){
      |     ^~~~
a.cc:3:5: note: 'int main()' previously defined here
    3 | int main(void){
      |     ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
#define int long long
#define REP(i, n) for ( int i = 0; i < (n); i++ )
 
signed main() {
  cin.tie(0);
  ios_base::sync_with_stdio(0);

  int N;
  cin >> N;

  using P = pair<int, int>;
  vector<P> R(N), B(N);
  REP(i, N) {
    cin >> R[i].first >> R[i].second;    
  }
  REP(i, N) {
    cin >> B[i].first >> B[i].second;    
  }

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

  int ans = 0;
  for ( int i = 0; i < N; i++ ) {
    int id = -1;
    for ( int j = 0; j < N; j++ ) {     
      if ( B[i].first > R[j].first && B[i].second > A[j].second ) {
	if ( id == -1 ) {
	  id = j;
	} else if ( R[j].second > R[id].second ) {
	  id = j;
	}
      }      
    }
    if ( id == -1 ) continue;
    // cout << i << " " << id << endl;      
    R[id].first = R[id].second = 1e9;
    ans++;
  }

  cout << ans << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:29:53: error: 'A' was not declared in this scope
   29 |       if ( B[i].first > R[j].first && B[i].second > A[j].second ) {
      |                                                     ^
Language: C++

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

int main()
{
    int n;
    cin >> n;
    vector<pair<int, int>> a, b;
    vector<bool> seen(n, false);
    repi(i, n, 0)
    {
        int aa, bb;
        cin >> aa >> bb;
        a.push_back({aa, bb});
    }
    repi(i, n, 0)
    {
        int cc, dd;
        cin >> cc >> dd;
        b.push_back({cc, dd});
    }
    // cout << endl;
    sort(a.begin(),a.end());
    sort(b.begin(),b.end());
    int ans = 0;
    for (auto bb : b)
    {
        int index = 0, mx = INF, my = INF, p = INF;
        // cout << bb.first << " " << bb.second << " " << p << endl;
        for (auto aa : a)
        {
            if (seen[index])
            {
                index++;
                continue;
            }
            if (aa.first >= bb.first || aa.second >= bb.second){
                index++;
                continue;
            }
            if (mx >= abs(aa.first - bb.first) && my >= abs(aa.second - bb.second))
            {
                mx = abs(aa.first - bb.first);
                my = abs(aa.second - bb.second);
                p = index;
            }
            index++;
        }
        if (p != INF)
        {
            // cout << bb.first << " " << bb.second << " " << a[p].first << " " << a[p].second << endl;
            seen[p] = true;
            ans++;
        }
    }
    cout << ans << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:30:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   30 |     sort(a.begin(),a.end());
      |     ^~~~
      |     short
Language: C

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

using namespace std;

using ll = long long;
using P = pair<int, int>;

#define rep(i, n) for(int i = 0; i < (int)(n); i++)
#define mkp(a, b) make_pair(a, b)
const int inf = 1e+9;



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

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

	rep(i, n) {
		int a, b;
		cin >> a >> b;
		red.push_back(mkp(a, b));
	}

	rep(i, n) {
		int c, d;
		cin >> c >> d;
		blue.push_back(mkp(c, d));
	}

	sort(red.begin(), red.end());
	sort(blue.begin(), blue.end());

	int cur_red = 0;


	vector <int> red_y;
	int ans = 0;
	for(int cur_blue = 0; cur_blue < blue.size(); cur_blue++) {
		pair<int, int> cur_b = blue[cur_blue];
		int b_x = cur_b.first;
		int b_y = cur_b.second;

		while(cur_red < n && red[cur_red].first < b_x) {
			red_y.push_back(red[cur_red].second);
			cur_red++;
		}

		int max_y = -1;
		int max_i = -1;
		for(int i = 0; i < red_y.size(); i++) {
			if (red_y[i] < b_y) {
				if (red_y[i] > max_y) {
					max_i = i;
					max_y = red_y[i];
				}
			}
		}

		if (max_y == -1) continue;

		red_y.erase(red_y.begin() + max_i);
		ans++;
	}
	cout << ans << endl;
	return 0;
}


Compiler output:
main.c:1:10: fatal error: iostream: No such file or directory
    1 | #include <iostream>
      |          ^~~~~~~~~~
compilation terminated.