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

    LL c1 = 0, c2 = 0;
    REP(y, h) REP(x, w) {
        if(y <= bh && x <= bw) {
            c1++;
        } else {
            c2++;
        }
    }
    LL d2[500][500] = {};
    REP(y, H) REP(x, W) {
    }


Compiler output:
a.cc:1:5: error: 'LL' does not name a type
    1 |     LL c1 = 0, c2 = 0;
      |     ^~
a.cc:2:8: error: expected constructor, destructor, or type conversion before '(' token
    2 |     REP(y, h) REP(x, w) {
      |        ^
a.cc:9:5: error: 'LL' does not name a type
    9 |     LL d2[500][500] = {};
      |     ^~
a.cc:10:8: error: expected constructor, destructor, or type conversion before '(' token
   10 |     REP(y, H) REP(x, W) {
      |        ^
Language: Java

import java.util.*;
 
public class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int H = sc.nextInt();
		int W = sc.nextInt();
		int h = sc.nextInt();
		int w = sc.nextInt();
		ifif( (H-h)%2==0 || (W-w)%2==0 ) System.out.println("No");
		
		System.out.println("Yes");
		long s = Math.max(1, (h-1)*(w-1));
		long x = (-1)*h*w/s;
		for(int i=0; i<H; ++i){
			for(int j=0; j<W-1; j++){
				if(i%h==0 || j%w==0) System.out.print(1+" ");
				else System.out.print(x+" ");
			}
			System.out.println(1);
		}
		return;
	}
}

Compiler output:
Main.java:10: error: ';' expected
		ifif( (H-h)%2==0 || (W-w)%2==0 ) System.out.println("No");
		                                ^
1 error
Language: C++

#include <iostream>
#include <set>
#include <vector>
#include <string>
#include <algorithm>
#include <queue>
#include <set>
#include <cstring>
#include <map>
#include <bitset>
#include <random>
#include <stack>
#include <list>
#include <unordered_set>
#include <unordered_map>
#include <ctime>

using namespace std;

#define ll long long
#define ld long double
#define pb push_back
#define sc second
#define fs first
#define mp make_pair
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()

template<class T> T sqr(T x) { return x*x; }
ld pi = 3.1415926535897932384626433832795;
ll mod = 1e9 + 7;
const int N = 1e5 + 10;

ll gcd(ll a, ll b) {
	return b ? gcd(b, a % b) : a;
}

int a[123456], n;
int main() {
	cin >> n;
	int mn = 1e9, mx = -1e9, cnt = 0;
	for (int i = 0; i < n; i++)
		cin >> a[i], cnt += (n - 1 - a[i]), mn = min(mn, a[i]), mx = max(mx, a[i]);
	int cnt = 0;
	for (int i = 0; i < n; i++)
		cnt += a[i] == mx;
	if (cnt < n - mx + 1) {
		cout << "No";
		return 0;
	}
	if (mx - mn > 1) {
		cout << "No";
		return 0;
	}
	if (cnt % (n - 2) != 0) cout << "No";
	else cout << "Yes";
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:44:13: error: redeclaration of 'int cnt'
   44 |         int cnt = 0;
      |             ^~~
a.cc:41:34: note: 'int cnt' previously declared here
   41 |         int mn = 1e9, mx = -1e9, cnt = 0;
      |                                  ^~~
Language: C++

#include<cstdio>
 
int main()
{
	int n,m,h,w;
	scanf("%d%d%d%d",&n,&m,&h,&w);
		return puts("No"),0;

Compiler output:
a.cc: In function 'int main()':
a.cc:7:37: error: expected '}' at end of input
    7 |                 return puts("No"),0;
      |                                     ^
a.cc:4:1: note: to match this '{'
    4 | {
      | ^
Language: C++

				if (i % h < r)
					cout << 5 * H << " ";
				else if (i % h == r)
					cout << -5 * H * r - 1 << " ";
				else
					cout << "0 ";
			}
			cout << "\n";
		}
		return 0;
	}
	if (W % w != 0) {
		cout << "Yes\n";
		int r = W % w;
		for (int i = 0; i < H; i++) {
			for (int j = 0; j < W; j++) {
				if (j % w < r) 
					cout << 5 * W << " ";
				else if (j % w == r)
					cout << -5 * W * r - 1 << " ";
				else
					cout << "0 ";
			}
			cout << "\n";
		}
		return 0;
	}
	cout << "No" << endl;
	return 0;
}

Compiler output:
a.cc:1:33: error: expected unqualified-id before 'if'
    1 |                                 if (i % h < r)
      |                                 ^~
a.cc:3:33: error: expected unqualified-id before 'else'
    3 |                                 else if (i % h == r)
      |                                 ^~~~
a.cc:5:33: error: expected unqualified-id before 'else'
    5 |                                 else
      |                                 ^~~~
a.cc:7:25: error: expected declaration before '}' token
    7 |                         }
      |                         ^
a.cc:8:25: error: 'cout' does not name a type
    8 |                         cout << "\n";
      |                         ^~~~
a.cc:9:17: error: expected declaration before '}' token
    9 |                 }
      |                 ^
a.cc:10:17: error: expected unqualified-id before 'return'
   10 |                 return 0;
      |                 ^~~~~~
a.cc:11:9: error: expected declaration before '}' token
   11 |         }
      |         ^
a.cc:12:9: error: expected unqualified-id before 'if'
   12 |         if (W % w != 0) {
      |         ^~
a.cc:28:9: error: 'cout' does not name a type
   28 |         cout << "No" << endl;
      |         ^~~~
a.cc:29:9: error: expected unqualified-id before 'return'
   29 |         return 0;
      |         ^~~~~~
a.cc:30:1: error: expected declaration before '}' token
   30 | }
      | ^
Language: Java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.StringTokenizer;


public class Main {

    public static void main(String[] args) throws Exception {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;

        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);

        Task solver = new Task();
        solver.solve(in, out);
        out.close();
    }
}

class Task {

    public void solve(InputReader in, PrintWriter out) {
        int H = in.nextInt();
        int W = in.nextInt();
        int h = in.nextInt();
        int w = in.nextInt();
        if (H % h == 0 && W % w == 0) {
            out.println("No");
            return;
        }
        int cnt = H / h * (W / w);
        out.println("Yes");
        for (int i = 1; i <= H; i++) {
            for (int j = 1; j <= W; j++) {
                if (j > 1) out.print(" ");
                if (i % h == 0 && j % w == 0) {
                    out.print(-8000 * w * h + 7999);
                } else {
                    out.print(8000);
                }
            }
            out.println();
        }
    }
}


}


class InputReader {

    private final BufferedReader reader;
    private StringTokenizer tokenizer;

    public InputReader(InputStream stream) {
        reader = new BufferedReader(new InputStreamReader(stream));
        tokenizer = null;
    }

    public String nextLine() {
        try {
            return reader.readLine();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    public String next() {
        while (tokenizer == null || !tokenizer.hasMoreTokens()) {
            tokenizer = new StringTokenizer(nextLine());
        }
        return tokenizer.nextToken();
    }

    public int nextInt() {
        return Integer.parseInt(next());
    }

    public long nextLong() {
        return Long.parseLong(next());
    }

    public double nextDouble() {
        return Double.parseDouble(next());
    }

}


Compiler output:
Main.java:53: error: class, interface, enum, or record expected
}
^
1 error
Language: C++

/*#include <ext/pb_ds/assoc_container.hpp> 
#include <ext/pb_ds/tree_policy.hpp>*/
#include <bits/stdc++.h>

using namespace std;
//using namespace __gnu_pbds;
 
typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> pii;
//typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;

#define FOR(i, a, b) for (int i=a; i<b; i++)
#define F0R(i, a) for (int i=0; i<a; i++)
#define FORd(i,a,b) for (int i = (b)-1; i >= a; i--)
#define F0Rd(i,a) for (int i = (a)-1; i >= 0; i--)
 
#define mp make_pair
#define pb push_back
#define f first
#define s second
#define lb lower_bound
#define ub upper_bound

const int MOD = 1000000007;
double PI = 4*atan(1);

int H,W,h,w, INF = 500000; 
int ans[500];

int main() {
    cin >> H >> W >> h >> w;
    if (H % h != 0) {
        cout << "Yes\n";
        F0R(i,H) {
            if (i % h == 0) ans[i] = INF;
            else if (i % h == (h-1)) ans[i] = -INF-1;
        }
        ans[H-1] = INF;
        F0R(i,H) {
            F0R(j,W) cout << ans[i] << " ";
            cout << "\n";
        }
    } /*else if (W % w != 0) {
        cout << "Yes\n";
        F0R(i,W) {
            if (i % w == 0) ans[i] = INF;
            else if (i % w == (w-1)) ans[i] = -INF-1;
        }
        ans[W-1] = INF;
        F0R(i,H) {
            F0R(j,W) cout << ans[j] << " ";
            cout << "\n";
        }
    }
}

Compiler output:
a.cc:44:7: error: unterminated comment
   44 |     } /*else if (W % w != 0) {
      |       ^
a.cc: In function 'int main()':
a.cc:44:6: error: expected '}' at end of input
   44 |     } /*else if (W % w != 0) {
      |      ^
a.cc:31:12: note: to match this '{'
   31 | int main() {
      |            ^
Language: C++

#include <cstdlib>
#include <iostream>
#include <queue>
#include <vector>
#include <cmath>
#include <string>
using namespace std;
typedef unsigned long long u64;
typedef signed long long l64;

int main(void)
{
  cin.tie(0);
  ios::sync_with_stdio(false);
  int H, W, h, w;
  cin >> H >> W >> h >> w;
  l64 mat[H][W];
  l64 sum = 0;
  u64 m_cnt = 0;
  for (int i = 0; i < H; ++i) {
    for (int j = 0; j < W; ++j) {
      if (i%h == h-1 && j%w == w-1) {
        mat[i][j] = -1*(h*w);
        m_cnt++;
      } else {
        mat[i][j] = 1;
      }
      sum += mat[i][j];
    }
  }
  if (sum > 0) {
    cout << "Yes" << endl;
    for (int i = 0; i < H; ++i) {
      for (int j = 0; j < W; ++j) {
        cout << mat[i][j] << " ";
      }
      cout << endl;
    }
  } else if (h*w == 1) {
    cout << "No" << endl;
  } else if ( (999999999 / (h*w-1)) * (h*w-1) + 1) * (H/h) * (W/w) < (999999999 / (h*w-1)) * H * W ) {
    cout << "Yes" << endl;
    l64 amp = 999999999 / (h*w-1);
    for (int i = 0; i < H; ++i) {
      for (int j = 0; j < W; ++j) {
        if (mat[i][j] == 1) {
          cout << amp << " ";
        } else {
          cout << -1 * ((h*w-1) * amp + 1) << " ";
        }
      }
      cout << endl;    }
  } else {
    cout << "No" << endl;
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:41:52: error: invalid type argument of unary '*' (have 'int')
   41 |   } else if ( (999999999 / (h*w-1)) * (h*w-1) + 1) * (H/h) * (W/w) < (999999999 / (h*w-1)) * H * W ) {
      |                                                    ^~~~~~~
Language: C++

#include<set>
#include<map>
#include<cmath>
#include<ctime>
#include<cstdio>
#include<cassert>
#include<cstdlib>
#include<cstring>
#include<algorithm>
using namespace std;
const double PI=acos(-1);
typedef long long ll;
typedef pair<int,int> pi;
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define rep(i,a,b) for (int i=(a);i<=(b);i++)
#define per(i,a,b) for (int i=(a);i>=(b);i--)
#define Rep(i,a,b) for (int i=(a);i<(b);i++)
#define Per(i,a,b) for (int i=(a);i>(b);i--)
//debug
#define deb printf("begin\n");
#define dee printf("end\n");
#define def printf("find\n");
#define dey printf("Yes\n");
#define den printf("No\n");
#define dew printf("wrong\n");
void read(int&x){
	x=0;int f=1;char ch=getchar();
	while ((ch<'0'||ch>'9')&&ch!='-')ch=getchar();
	if (ch=='-')f=-1,ch=getchar();
	while (ch>='0'&&ch<='9')x=x*10+ch-'0',ch=getchar();
	x*=f;
}
//--------------------------head--------------------------//

#define maxn 1005
int a[maxn][maxn];
int H,R,n,m;
bool check(){
	rep(i,1,H)rep(j,1,R)a[i][j]=1;
	for (int i=1;i<=H;i+=n)
	for (int j=1;j<=R;j+=m)
	a[i][j]=-(n*m/4);
	int res=0;
	rep(i,1,H)rep(j,1,R)res+=a[i][j];
	if (a[i][j]>0){
		
		printf("Yes\n");
		rep(i,1,H){
			rep(j,1,R)printf("%d ",a[i][j]);
			printf("\n");
		}
	}
	return true;
}
int main(){
	read(H);read(R);read(n);read(m);
	rep(i,1,H)rep(j,1,R)a[i][j]=1;
	for (int i=n;i<=H;i+=n)
	for (int j=m;j<=R;j+=m)
		a[i][j]=-n*m;
	int res=0;
	rep(i,1,H)rep(j,1,R)res+=a[i][j];
	if (res<=0){
		if (check())printf("No\n");
	}
	else{
		printf("Yes\n");
		rep(i,1,H){
			rep(j,1,R)printf("%d ",a[i][j]);
			printf("\n");
		}
	}
	return 0;
}

Compiler output:
a.cc: In function 'bool check()':
a.cc:48:15: error: 'i' was not declared in this scope; did you mean 'pi'?
   48 |         if (a[i][j]>0){
      |               ^
      |               pi
a.cc:48:18: error: 'j' was not declared in this scope
   48 |         if (a[i][j]>0){
      |                  ^
Language: C++

#include <cstdio>
#include <cstring>
#include <algorithm>
using namespace std;
long long H, h, W, w;
long long a[1090][1090];
bool check() {
    long long sum = 0;
    for (int i = 1; i <= H; ++i)
        for (int j = 1; j <= W; ++j)
            sum += a[i][j];
    return sum > 0;
}
int main() {
    scanf("%lld %lld %lld %lld", &H, &W, &h, &w);
    for (int i = h; i <= H; i += h)
        for (int j = w; j <= W; j += w)
            a[i][j] = -LL(h*w-1)*260000LL-1LL;
    for (int i = 1; i <= H; ++i)
        for (int j = 1; j <= W; ++j)
            if (a[i][j] == 0) a[i][j] = 260000;
    if (check()) {
        puts("Yes");
        for (int i = 1; i <= H; ++i) {
            for (int j = 1; j <= W; ++j)
                printf("%lld ", a[i][j]);
            putchar('\n');
        }
    }
    else puts("No");
}


Compiler output:
a.cc: In function 'int main()':
a.cc:18:24: error: 'LL' was not declared in this scope
   18 |             a[i][j] = -LL(h*w-1)*260000LL-1LL;
      |                        ^~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define int long long
using ll=long long;
using vi=vector<int>;
using vl=vector<long long>;
using pii=pair<int,int>;
using pll=pair<long long,long long>;
#define ITR(i,c) for(auto i=begin(c);i!=end(c);++i)
#define FORE(x,c) for(auto &x:c)
#define REPF(i,a,n) for(int i=a,i##len=(int)(n);i<i##len;++i)
#define REP(i,n) REPF(i,0,n)
#define REPR(i,n) for(int i=(int)(n);i>=0;--i)
#define REPW(i,n) for(i=0;i<(int)(n);++i)
#define ALL(c) begin(c),end(c)
#define RALL(c) rbegin(c),rend(c)   // c++14
#define SZ(c) ((int)c.size())
#define EXIST(c,x) (c.find(x)!=end(c))
#define OUTOFRANGE(y,x,h,w) (y<0||x<0||y>=h||x>=w)
#define dump(...)
const int DX[9]={0,1,0,-1,1,1,-1,-1,0},DY[9]={-1,0,1,0,-1,1,1,-1,0};
#define INF (1001001001)
#define INFLL (1001001001001001001ll)
template<class T> ostream& operator << (ostream &os,const vector<T> &v) {
    ITR(i,v) os << *i << (i==end(v)-1 ? "" : "\n"); return os; }
template<class T> istream& operator >> (istream &is,vector<T> &v) {
    ITR(i,v) is >> * i; return is; }
template<class T> istream& operator >> (istream &is, pair<T,T> &p) {
        is >> p.first >> p.second; return is; }
template<class T>bool chmax(T &a,const T &b){if(a<b){a=b;return 1;}return 0;}
template<class T>bool chmin(T &a,const T &b){if(b<a){a=b;return 1;}return 0;}
//------------------------------------------------------------------------------
struct before_main_function {
    before_main_function() {
        #ifdef int
            #undef INF
            #define INF INFLL
            #define stoi stoll
        #endif
        cin.tie(0);ios::sync_with_stdio(false);
        cout<<setprecision(15)<<fixed;
    }
} before_main_function;
//------------------------------------------------------------------------------

signed main() {
    int H,W,h,w;
    cin>>H>>W>>h>>w;
    vector<vector<int>> g(H,vector<int>(W,4000));
    for(int i=h-1;i<H;i+=h) {
        for(int j=w-1;j<W;j+=w) {
            g[i][j]=-h*w*4000;
        }
    }
    dump_vvi(g);
    int sum=0;
    REP(i,H) {
        REP(j,W) {
            sum+=g[i][j];
        }
    }
    dump(sum);
    if(sum<0) {
        cout<<"No"<<endl;
    }
    else {
        cout<<"Yes"<<endl;
        REP(i,H) {
            REP(j,W) {
                cout<<g[i][j];
                if(j!=W-1) cout<<" ";
                else cout<<endl;
            }
        }
    }
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:55:5: error: 'dump_vvi' was not declared in this scope
   55 |     dump_vvi(g);
      |     ^~~~~~~~
Language: C++

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

const int N = 100 * 1000 + 5;

int a[N], b[N];
set <pair <int, int> > s;
map <int, set <int> > mp;
int c[N], d[N];



int main() {
	int n;
	cin >> n;
	for (int i = 1; i <= n; i++) {
		cin >> a[i];
		a[0] ^= a[i];
	}
	for (int i = 1; i <= n; i++) {
		cin >> b[i];
		b[0] ^= b[i];
		if (a[i] != b[i]) {
			mp[b[i]].insert(i);
			s.insert({a[i], i});
		}
	}
	for (int i = 0; i <= n; i++) {
		c[i] = a[i];
		d[i] = b[i];
	}
	sort(c, c + n + 1);
	sort(d, d + n + 1);
	for (int i = 0; i <= n; i++) {
		if (c[i] != d[i]) {
			cout << -1;
			return 0;
		}
	}
	int t = 0;
	while (s.size()) {
		t++;
		if (t > n * 2) {
			cout << -2;
			return 0;
		}
		if (mp[a[0]].size()) {
			int x = *mp[a[0]].begin();
			mp[a[0]].erase(mp[a[0]].begin());
			s.erase({a[x], x});
			swap(a[0], a[x]);
		}	
		else {
			int y = (*s.begin()).second;
			if (a[0] != a[y]) {
				s.erase(s.begin());
				swap(a[0], a[y]);
				s.insert({a[y], y});
			}
			else {
				if (a[0] == a[z]) {
					int k = 0;
					z /= k;
				}
				int z = (*s.rbegin()).second;
				s.erase(*s.rbegin());
				swap(a[0], a[z]);
				s.insert({a[z], z});
			}
		}
	}
	cout << t;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:64:47: error: 'z' was not declared in this scope
   64 |                                 if (a[0] == a[z]) {
      |                                               ^
Language: C++

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

#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4.2")

#define all(x) (x).begin(),(x).end()

int inp(){
    int x;
    cin >> x;
    return x;
}

int get_compos(const int &key, const vector<int> &comp){
    return lower_bound(all(comp), key) - comp.begin();
}

void compress(vector<int> &comp){
    sort(all(comp));
    comp.resize(unique(all(comp)) - comp.begin());
}

void opting(){
    ios::sync_with_stdio(false);
    cout.tie(0);
    cin.tie(0);
}

const int maxn = 2e5 + 69, delta = 1e9 + 7;

vector<int> comp, A, B;
unordered_map<int, int> cnt;
int n;

void input(){
    cin >> n;

    int x1 = 0;
    for(int i = 0; i < n; i++){
        int tmp = inp();
        x1 ^= tmp;
        cnt[tmp] ++;
        A.push_back(tmp);

        comp.push_back(tmp);
    }
    cnt[x1]++;
    A.push_back(x1);

    comp.push_back(x1);

    int x2 = 0;
    for(int i = 0; i < n; i++){
        int tmp = inp();
        x2 ^= tmp;
        cnt[tmp]--;
        B.push_back(tmp);

    }
    cnt[x2]--;
    B.push_back(x2);

    for(auto e : cnt)
        if(e.second != 0){
            cout << -1;
            exit(0);
        }
}

int E = 0;
bool inside[maxn];
vector<int> adj[maxn];
void add_edge(int u, int v){
    adj[u].push_back(v);
    E++;

    inside[u] = inside[v] = inside[A[n]] = inside[B[n]] = true;
}

bool mark[maxn];
void dfs(int v){
    mark[v] = true;
    for(auto u : adj[v])
        if(!mark[u])
            dfs(u);
}
void solve(){
    compress(comp);

    for(int i = 0; i <= n; i++){
        A[i] = get_compos(A[i], comp);
        B[i] = get_compos(B[i], comp);

    for(int i = 0; i <= n; i++)
        if(A[i] != B[i])
            add_edge(A[i], B[i]);

    int comp_cnt = 0;
    for(int i = 0; i <= n; i++)
        if(!mark[i] and inside[i])
            comp_cnt++, dfs(i);

    if(comp_cnt == 0){
        cout << 0;
        return;
    }
    if(comp_cnt == 1)
        cout << E - 1;
    else
        cout << E + comp_cnt - 1;
}


int main(){
    opting();

    input();
    solve();

}


Compiler output:
a.cc: In function 'void solve()':
a.cc:115:9: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
  115 | int main(){
      |         ^~
a.cc:115:9: note: remove parentheses to default-initialize a variable
  115 | int main(){
      |         ^~
      |         --
a.cc:115:9: note: or replace parentheses with braces to value-initialize a variable
a.cc:115:11: error: a function-definition is not allowed here before '{' token
  115 | int main(){
      |           ^
a.cc:121:2: error: expected '}' at end of input
  121 | }
      |  ^
a.cc:88:13: note: to match this '{'
   88 | void solve(){
      |             ^
Language: C

//khodaya khodet komak kon
#include <bits/stdc++.h>

#define F first
#define S second
#define pb push_back
#define all(x) x.begin(), x.end()
#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math")


using namespace std;

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

const int N = 200000 + 10;
const ll MOD = 1000000000 + 7;
const ll INF = 1000000010;
const ll LOG = 25;

int n, a[N], b[N], cnt[N], par[N], ans, sz[N];
vi num, G[N], GG[N];
bool mark[N];

int getpar(int v){
	return (par[v] == v?v:par[v] = getpar(par[v]));
}

void merge(int v, int u){
	v = getpar(v), u = getpar(u);
	if (v == u) return;
	if (sz[v] < sz[u]) swap(v, u);
	ans --;
	par[u] = v;
	sz[v] += sz[u];
}

int32_t main(){
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	int X = 0;
	cin >> n;
	for (int i = 1; i < N; i++) par[i] = i, sz[i] = 1;
	for (int i = 1; i <= n; i++){
		cin >>a[i];
		X ^= a[i];
		num.pb(a[i]);
	}
	a[n + 1] = X;
	num.pb(X);
	for (int i = 1; i <= n; i++){
		cin >> b[i];
		num.pb(b[i]);
	}
	sort(all(num));
	num.resize(unique(all(num)) - num.begin());
	for (int i = 1; i <= n + 1; i++){
		a[i] = lower_bound(all(num), a[i]) - num.begin() + 1;
		cnt[a[i]]++;
	}
	for (int i = 1; i <= n; i++){
		b[i] = lower_bound(all(num), b[i]) - num.begin() + 1;
		if (cnt[b[i]] == 0) return cout << -1, 0;
		cnt[b[i]]--;
	}	
	for (int i = 0; i <N; i++){
		if (cnt[i] == 1){
			X = i;
			break;
		}
	}
//	cout << X << '\n';
	memset(cnt, 0, sizeof cnt);
	for (int i = 1; i <= n; i++){
		if (a[i] == b[i]) continue;
		ans ++;
		cnt[a[i]]++;
		G[b[i]].pb(i);
	}
	G[b[n + 1]].pb(n + 1);
	if (ans == 0) return cout << 0, 0;
	ans ++;
	ans *= 2;
	ans -= 2;
//	cout << ans << '\n';
	for (int i = 1; i <= n; i++){
		if (a[i] == b[i]) continue;
		GG[a[i]].pb(i);
	}
	GG[a[n + 1]].pb(n + 1);
	for (int i = 1; i <= n; i++){
		if (a[i] == b[i]) continue;
		if (!mark[a[i]]){
			mark[a[i]] = 1;
			for (auto u:G[a[i]]){
				merge(i, u);
			}
			for (auto u:GG[a[i]]) merge(i, u);
		}
	}
	if (!mark[a[n + 1]]){
		for (auto u:G[a[n + 1]]){
			merge(n + 1, u);
		}
	}
	cout << ans;
	return 0;
}


Compiler output:
main.c:2:10: fatal error: bits/stdc++.h: No such file or directory
    2 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
using namespace std;
const int N = 100005;
unordered_map<int,int> id;
vector<int> v;
int a[N], b[N], p[N], rk[N], xa[N], xb[N];
int n, N, num;
int find(int x){
    return p[x] == x ? x : p[x] = find(p[x]);
}
void unionset(int x, int y){
    x = find(x), y=  find(y);
    if (x == y) return;
    if (rk[x] < rk[y]) swap(x,y);
    p[y] = x;
    if (rk[x] == rk[y]) rk[x]++;
    num--;
}
int main(){
    scanf("%d",&n);
    for (int i = 0; i < n; i++){
        scanf("%d",&a[i]);
        a[n] ^= a[i];
    }
    for (int i = 0; i < n; i++){
        scanf("%d",&b[i]);
        b[n] ^= b[i];
    }
    for (int i = 0; i <= n; i++){
        xa[i] = a[i], xb[i] = b[i];
    }
    sort(xa,xa+n+1);
    sort(xb,xb+n+1);
    for (int i = 0; i <= n; i++){
        if (xa[i] != xb[i]){
            printf("-1");
            return 0;
        }
    }
    for (int i = 0; i <= n; i++){
        if (a[i] != b[i] || i == n){
            N++;
            v.push_back(a[i]);
        }
    }
    sort(v.begin(),v.end());
    v.erase(unique(v.begin(),v.end()),v.end());
    for (auto x : v){
        id[x] = num++;
    }
    num--;
    iota(p,p+N,0);
    for (int i = 0; i <= n; i++){
        if (a[i] != b[i] || i == n){
            unionset(id[a[i]],id[b[i]]);
        }
    }
    int ans = N+num-2;
    printf("%d",ans);
}


Compiler output:
a.cc:7:8: error: conflicting declaration 'int N'
    7 | int n, N, num;
      |        ^
a.cc:3:11: note: previous declaration as 'const int N'
    3 | const int N = 100005;
      |           ^
a.cc: In function 'int main()':
a.cc:42:13: error: increment of read-only variable 'N'
   42 |             N++;
      |             ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int a[100500], b[100500];
int mid[100500], mid2[100500];
int main()
{
	int n = 0;
	scanf("%d", &n);
	for(int i = 1; i <= n; i++) scanf("%d", a + i), a[0] ^= a[i];
	for(int i = 1; i <= n; i++) scanf("%d", b + i), b[0] ^= b[i];
	for(int i = 0; i <= n; i++) mid[i] = a[i], mid2[i] = b[i];
	sort(mid, mid + n + 1), sort(mid2, mid2 + n + 1);
	for(int i = 0; i <= n; i++)
		if(mid[i] != mid2[i])
		{
			puts("-1");
			return 0;
		}
	int p = 0, tot = 0;
	for(int i = 1; i <= n; i++)
		if(a[i] != b[i]) tot++;
	if(a[i] == b[i]) cout << tot + 1 << endl;
	else cout << tot << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:14: error: 'i' was not declared in this scope
   22 |         if(a[i] == b[i]) cout << tot + 1 << endl;
      |              ^
Language: C++

#include <iostream>
#include <fstream>
#include <map>
#include <vector>
using namespace std;
const int nmax=100005;
map<int,int> ap,norm;
vector<int> v[nmax];
int viz[nmax],a[nmax],b[nmax];
int n,i,j,nr,edges,cc;
void dfs(int x)
{
    viz[x]=1;
    for(int i=0;i<v[x].size();i++)
        if(!viz[v[x][i]])
           dfs(v[x][i]);
}
int main()
{
    ios_base::sync_woth_stdio(false);
    cin>>n;
    for(i=1;i<=n;i++)
        cin>>a[i],a[0]^=a[i];
    for(j=1;j<=n;j++)
        cin>>b[j],b[0]^=b[j];
    for(i=0;i<=n;i++)
        ap[a[i]]++;
    for(i=0;i<=n;i++)
        ap[b[i]]--;
    for(i=0;i<=n;i++)
        if(ap[a[i]]||ap[b[i]])
    {
        cout<<"-1";
        return 0;
    }
    for(i=0;i<=n;i++)
        if((!norm[a[i]])&&(a[i]!=b[i]||i==0))
          norm[a[i]]=++nr;
    if(!norm[b[0]])
        norm[b[0]]=++nr;
    for(i=1;i<=n;i++)
        if((a[i]!=b[i]))
    {
        a[i]=norm[a[i]];
        b[i]=norm[b[i]];
        v[a[i]].push_back(b[i]);
        v[b[i]].push_back(a[i]);
        edges++;
    }
    for(int i=1;i<=nr;i++)
        if((!viz[i]))
          dfs(i),cc++;
    cout<<edges+cc-1<<'\n';
    return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:20:15: error: 'sync_woth_stdio' is not a member of 'std::ios_base'
   20 |     ios_base::sync_woth_stdio(false);
      |               ^~~~~~~~~~~~~~~
Language: C++

#include<bits/stdc++.h>
#define X first
#define Y second
#define pb emplace_back
#define FOR(i,a,b) for(int (i)=(a);i<(b);++(i))
#define EFOR(i,a,b) for(int (i)=(a);i<=(b);++(i))
#define rep(X,Y) for (int (X) = 0;(X) < (Y);++(X))
#define reps(X,S,Y) for (int (X) = S;(X) < (Y);++(X))
#define rrep(X,Y) for (int (X) = (Y)-1;(X) >=0;--(X))
#define rreps(X,S,Y) for (int (X) = (Y)-1;(X) >= (S);--(X))
#define all(X) (X).begin(),(X).end()
#define rall(X) (X).rbegin(),(X).rend()
#define eb emplace_back
#define UNIQUE(X) (X).erase(unique(all(X)),(X).end())

using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef ll LL;
typedef pii PII;
typedef pll PLL;
template<class T> using vv=vector<vector<T>>;
template<class T> inline bool MX(T &l,const T &r){return l<r?l=r,1:0;}
template<class T> inline bool MN(T &l,const T &r){return l>r?l=r,1:0;}
const ll MOD=1e9+7;

int N;
int A[114514];
int B[114514];
map<int, multiset<int>> es;

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

  int x = 0;
  rep(i, N) {
    scanf("%d", &A[i]);
    x ^= A[i];
  }

  rep(i, N) {
    scanf("%d", &B[i]);
    if (A[i] != B[i]) es[B[i]].insert(A[i]);
  }

  int defx = x;
  int ans = 0;
  while (!es.empty()) {
    if (!es.count(x)) {
      assert(!es.empty());
      ans++;
      int want = es.begin()->X;
      assert(!es[want].empty());
      int give = *es[want].begin();
      if (defx == give) given = *es[want].rbegin();
      es[want].erase(es[want].find(give));
      es[want].insert(x);
      x = give;
    }

    if (!es.count(x)) {
      puts("-1");
      return 0;
    }

    ans++;
    int give = *es[x].begin();
    if (defx == give) given = *es[x].rbegin();
    es[x].erase(es[x].find(give));
    if (es[x].empty()) es.erase(x);
    x = give;
  }
  printf("%d\n", ans);
}


Compiler output:
a.cc: In function 'int main()':
a.cc:56:25: error: 'given' was not declared in this scope; did you mean 'give'?
   56 |       if (defx == give) given = *es[want].rbegin();
      |                         ^~~~~
      |                         give
a.cc:69:23: error: 'given' was not declared in this scope; did you mean 'give'?
   69 |     if (defx == give) given = *es[x].rbegin();
      |                       ^~~~~
      |                       give
Language: C++

#include<cstdio>
#include<algorithm>
using namespace std;
const int N=100010;
int n,ck=2,suma,sumb,tota,totb,fxor,ans,cnt,f[N],[N],b[N],lsha[N],lshb[N];
int find(int x){
	return x==f[x]?x:f[x]=find(f[x]);
}
int main(){
	scanf("%d",&n);
	for(int i=1;i<=n;i++){
		scanf("%d",a+i);
		lsha[i]=a[i];
		suma^=a[i];
	}
	for(int i=1;i<=n;i++){
		scanf("%d",b+i);
		lshb[i]=b[i];
		sumb^=b[i];
		if(a[i]!=b[i])
			ans++;
	}
	if(!ans){
		puts("0");
		return 0;
	}
	++n;
	lsha[n]=a[n]=suma,lshb[n]=b[n]=sumb;
	sort(lsha+1,lsha+n+1);
	sort(lshb+1,lshb+n+1);
	for(int i=1;i<=n;i++){
		if(lsha[i]!=lshb[i]){
			puts("-1");
			return 0;
		}
	}
	tota=unique(lsha+1,lsha+n+1)-(lsha+1);
	for(int i=1;i<=tota;i++)
		f[i]=i;
	for(int i=1;i<=n;i++){
		int x=lower_bound(lsha+1,lsha+tota+1,a[i])-lsha,y=lower_bound(lsha+1,lsha+tota+1,b[i])-lsha;
		int fx=find(x),fy=find(y);
		if(fx!=fy)
			f[fx]=fy;
	}
	fxor=find(lower_bound(lsha+1,lsha+n+1,suma)-lsha);
	for(int i=1;i<=n;i++){
		int fi=find(i);
		if(i==fi&&a[i]!=b[i])
			cnt++;
		if(fi==fxor)
			ck--;
	}
	printf("%d",ans+max(ck,0)+max(cnt-1,0));
	return 0;
}

Compiler output:
a.cc:5:50: error: expected unqualified-id before '[' token
    5 | int n,ck=2,suma,sumb,tota,totb,fxor,ans,cnt,f[N],[N],b[N],lsha[N],lshb[N];
      |                                                  ^
a.cc: In function 'int main()':
a.cc:12:28: error: 'a' was not declared in this scope
   12 |                 scanf("%d",a+i);
      |                            ^
a.cc:13:17: error: 'lsha' was not declared in this scope
   13 |                 lsha[i]=a[i];
      |                 ^~~~
a.cc:17:28: error: 'b' was not declared in this scope
   17 |                 scanf("%d",b+i);
      |                            ^
a.cc:18:17: error: 'lshb' was not declared in this scope
   18 |                 lshb[i]=b[i];
      |                 ^~~~
a.cc:20:20: error: 'a' was not declared in this scope
   20 |                 if(a[i]!=b[i])
      |                    ^
a.cc:28:9: error: 'lsha' was not declared in this scope
   28 |         lsha[n]=a[n]=suma,lshb[n]=b[n]=sumb;
      |         ^~~~
a.cc:28:17: error: 'a' was not declared in this scope
   28 |         lsha[n]=a[n]=suma,lshb[n]=b[n]=sumb;
      |                 ^
a.cc:28:27: error: 'lshb' was not declared in this scope
   28 |         lsha[n]=a[n]=suma,lshb[n]=b[n]=sumb;
      |                           ^~~~
a.cc:28:35: error: 'b' was not declared in this scope
   28 |         lsha[n]=a[n]=suma,lshb[n]=b[n]=sumb;
      |                                   ^
a.cc:42:40: error: 'y' was not declared in this scope; did you mean 'fy'?
   42 |                 int fx=find(x),fy=find(y);
      |                                        ^
      |                                        fy
Language: C++

#include<iostream>
#include<stdio.h>
#include<string.h>
#include<map>
#include<set>
using namespace std;
struct node{
	int x,y;
	node(int _x,int _y){x=_x,y=_y;}
};
operator <(node x,node y){
	if(x.x==y.x)return x.y<y.y;
	return x.x<y.x;
}
set<node>s;
int n,a[120000],b[120000];
int x;
map<int,int>p;
int main(){
	scanf("%d",&n);
	for(int i=1;i<=n;i++)scanf("%d",&a[i]),x^=a[i],p[a[i]]++;
	p[x]++;
	for(int i=1;i<=n;i++)scanf("%d",&b[i]),p[b[i]]--;
	for(int i=1;i<=n;i++)if(p[b[i]]<0){printf("-1\n");return 0;}
	for(int i=1;i<=n;i++)if(a[i]!=b[i])s.insert(node(b[i],a[i]));//,printf("%d %d\n",b[i],a[i]);
	int ans=0;
//	printf("%d\n",s.size());
	while(!s.empty()){
		set<node>::iterator it=s.lower_bound(node(x,-1));
		if(it==s.end())it=s.begin();
		node o=*it;
		s.erase(it);
		swap(x,o.y);
		ans++;
		if(o.x!=o.y)s.insert(o);
	}
	printf("%d\n",ans);
}

Compiler output:
a.cc:11:1: error: ISO C++ forbids declaration of 'operator<' with no type [-fpermissive]
   11 | operator <(node x,node y){
      | ^~~~~~~~
Language: C++

#include<iostream>
#include<stdio.h>
#include<string.h>
#include<map>
#include<set>
using namespace std;
struct node{
	int x,y;
	node(int _x,int _y){x=_x,y=_y;}
};
inline operator <(node x,node y){
	if(x.x==y.x)return x.y<y.y;
	return x.x<y.x;
}
set<node>s;
int n,a[120000],b[120000];
int x;
map<int,int>p;
int main(){
	scanf("%d",&n);
	for(int i=1;i<=n;i++)scanf("%d",&a[i]),x^=a[i],p[a[i]]++;
	p[x]++;
	for(int i=1;i<=n;i++)scanf("%d",&b[i]),p[b[i]]--;
	for(int i=1;i<=n;i++)if(p[b[i]]<0){printf("-1\n");return 0;}
	for(int i=1;i<=n;i++)if(a[i]!=b[i])s.insert(node(b[i],a[i]));//,printf("%d %d\n",b[i],a[i]);
	int ans=0;
//	printf("%d\n",s.size());
	while(!s.empty()){
		set<node>::iterator it=s.lower_bound(node(x,-1));
		if(it==s.end())it=s.begin();
		node o=*it;
		s.erase(it);
		swap(x,o.y);
		ans++;
		if(o.x!=o.y)s.insert(o);
	}
	printf("%d\n",ans);
}

Compiler output:
a.cc:11:8: error: ISO C++ forbids declaration of 'operator<' with no type [-fpermissive]
   11 | inline operator <(node x,node y){
      |        ^~~~~~~~
Language: C++

#include<bits/stdc++.h>
const int MAXN = 2e5 + 10;
using namespace std;
int n;
int ans=0,sum=0;
int A[MAXN], B[MAXN], ta[MAXN], tb[MAXN], sa, sb, tot = 0, Do[MAXN], fa[MAXN];
int find(int x) {
    return fa[x] == x ? fa[x] : fa[x] = find(fa[x]);
}
int unionn(int x, int y) {
    fa[x] = y;
}
int main() {
    scanf("%d",&n);
    for(int i=1;i<=n;i++)scanf("%d",&A[i]),sa^=A[i];A[n+1]=sa;
    for(int i=1;i<=n;i++)scanf("%d",&B[i]),sb^=B[i];B[n+1]=sb;
    memcpy(ta,A,sizeof(A));memcpy(tb,B,sizeof(B));
    n++;sort(ta+1,ta+n+1);sort(tb+1,tb+n+1);
    for(int i=1;i<n;i++)if(ta[i]!=tb[i])return puts("-1"), 0;
    for(int i=1;i<=n;i++)
        if(A[i]!=B[i]||(i==n)){
            Do[++sum]=A[i]; 
			Do[++sum]=B[i];
            if(i<n)ans++;
        }
    if(ans==0)return puts("0"), 0;
    sort(Do+1,Do+sum+1);
    sum=unique(Do+1,Do+sum+1)-Do-1;
    for(int i=1;i<=sum;i++)fa[i]=i;
    for(int i=1;i<=n;i++)
        if(A[i]!=B[i]) {
            A[i]=A[i]-Do;
            B[i]=B[i]-Do;
            unionn(find(A[i]),find(B[i]));
        }
    for(int i=1;i<=sum;i++)ans+=(fa[i]==i);
    printf("%d",ans-1);
}

Compiler output:
a.cc: In function 'int unionn(int, int)':
a.cc:12:1: warning: no return statement in function returning non-void [-Wreturn-type]
   12 | }
      | ^
a.cc: In function 'int main()':
a.cc:32:22: error: invalid operands of types 'int' and 'int [200010]' to binary 'operator-'
   32 |             A[i]=A[i]-Do;
      |                  ~~~~^~~
      |                     | |
      |                     | int [200010]
      |                     int
a.cc:33:22: error: invalid operands of types 'int' and 'int [200010]' to binary 'operator-'
   33 |             B[i]=B[i]-Do;
      |                  ~~~~^~~
      |                     | |
      |                     | int [200010]
      |                     int
Language: C++

#include<bits/stdc++.h>
const int MAXN = 4e5 + 10;
using namespace std;
int n;
int A[MAXN], B[MAXN], ta[MAXN], tb[MAXN], sa, sb, tot = 0, date[MAXN], fa[MAXN];
int find(int x) {
    return fa[x] == x ? fa[x] : fa[x] = find(fa[x]);
}
int unionn(int x, int y) {
    fa[x] = y;
}
int main() {
    scanf("%d",&n);
    for(int i = 1; i <= n; i++)scanf("%d",&A[i]), sa ^= A[i]; A[n + 1] = sa;
    for(int i = 1; i <= n; i++)scanf("%d",&B[i]);sb ^= B[i]; B[n + 1] = sb;
    n++;
    memcpy(ta, A, sizeof(A)); memcpy(tb, B, sizeof(B));
    sort(ta + 1, ta + n + 1); sort(tb + 1, tb + n + 1);
    for(int i = 1; i <= n - 1; i++) if(ta[i] != tb[i]) return puts("-1"), 0;
 
    int ans = 0, sum = 0;
    for(int i = 1; i <= n; i++) 
        if(A[i] != B[i] || (i == n)) {
            date[++sum] = A[i]; date[++sum] = B[i];
            if(i < n)ans++;
        }
    if(ans == 0) return puts("0"), 0;
 
    sort(date + 1, date + sum + 1);
    sum = unique(date + 1, date + sum + 1) - date - 1;
    for(int i = 1; i <= sum; i++) fa[i] = i;
    for(int i = 1; i <= n; i++)
        if(A[i] != B[i]) {
            A[i] = lower_bound(date + 1, date + sum + 1, A[i]) - date;
            B[i] = lower_bound(date + 1, date + sum + 1, B[i]) - date;
            unionn(find(A[i]), find(B[i]));
        }
 
    for(int i = 1; i <= sum; i++)
        if(fa[i] == i) ans++;
    printf("%d", ans - 1);
 
    return 0;
}

Compiler output:
a.cc: In function 'int unionn(int, int)':
a.cc:11:1: warning: no return statement in function returning non-void [-Wreturn-type]
   11 | }
      | ^
a.cc: In function 'int main()':
a.cc:15:58: error: 'i' was not declared in this scope
   15 |     for(int i = 1; i <= n; i++)scanf("%d",&B[i]);sb ^= B[i]; B[n + 1] = sb;
      |                                                          ^
Language: C++

package main

import (
	"bufio"
	"fmt"
	"io/ioutil"
	"os"
)

type IOTp struct {
	iBuffer []byte
	iPos int
}
func (this *IOTp) GetChar() byte {
	res:=this.iBuffer[this.iPos]
	this.iPos++
	return res
}
func (this *IOTp) ReadInt() int {
	res:=0
	k:=1
	for ch:=this.iBuffer[this.iPos]; !(ch>='0' && ch<='9'); ch=this.iBuffer[this.iPos]{
		if ch=='-' {
			k=-1
		}
		this.iPos++
	}
	for ch:=this.iBuffer[this.iPos]; ch>='0' && ch<='9'; ch=this.iBuffer[this.iPos]{
		res=res*10+int(ch-'0')
		this.iPos++
	}
	res*=k
	return res
}
func NewIOTp() *IOTp {
	now:=new(IOTp)
	inputFile,_:=os.Open("in.txt")
	//inputFile:=os.Stdin
	now.iBuffer,_=ioutil.ReadAll(inputFile)
	now.iBuffer=append(now.iBuffer, '\n')
	now.iPos=0
	return now
}
var cin *bufio.Reader
var cout *bufio.Writer
const MAXN=100000
func main() {
	IO:=NewIOTp()
	cout=bufio.NewWriter(os.Stdout)
	n:=IO.ReadInt()
	var a,b [MAXN+10]int
	for i:=1; i<=n; i++ {
		a[i]=IO.ReadInt()
	}
	for i:=1; i<=n; i++ {
		b[i]=IO.ReadInt()
	}
	for _,v:=range a[1:n+1] {
		a[n+1]^=v
	}
	for _,v:=range b[1:n+1] {
		b[n+1]^=v
	}
	m:=make(map[int]int)
	for _,v:=range a[1:n+2] {
		m[v]++
	}
	for _,v:=range b[1:n+2] {
		m[v]--
	}
	for _,v:=range m {
		if v!=0 {
			fmt.Println(-1)
			return;
		}
	}
	ans:=0
	for i:=range a[1:n+2] {
		if a[i]!=b[i] {
			ans++
		}
	}
	if a[n+1]==b[n+1] && ans!=0 {
		ans++
	}
	fmt.Println(ans)
	cout.Flush()
}


Compiler output:
a.cc:1:1: error: 'package' does not name a type
    1 | package main
      | ^~~~~~~
a.cc:14:6: error: expected constructor, destructor, or type conversion before '(' token
   14 | func (this *IOTp) GetChar() byte {
      |      ^
a.cc:19:6: error: expected constructor, destructor, or type conversion before '(' token
   19 | func (this *IOTp) ReadInt() int {
      |      ^
a.cc:35:1: error: 'func' does not name a type
   35 | func NewIOTp() *IOTp {
      | ^~~~
a.cc:44:1: error: 'var' does not name a type
   44 | var cin *bufio.Reader
      | ^~~
Language: C++

#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>
#if __cplusplus >= 201103L
#include <array>
#include <atomic>
#include <chrono>
#include <condition_variable>
#include <forward_list>
#include <future>
#include <initializer_list>
#include <mutex>
#include <random>
#include <ratio>
#include <regex>
#include <scoped_allocator>
#include <system_error>
#include <thread>
#include <tuple>
#include <typeindex>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>
#endif


#define ll long long
#define FOR(i,a) for(ll i=0;i<(ll)a.size();i++)
#define pb push_back
#define ld long double
#define mp make_pair
#define F first
#define S second
#define pii pair<ll,ll> 

using namespace :: std;

const ll maxn=1e5+500;
const ll inf=1e9;


ll a[maxn];
ll b[maxn];
multiset<ll> st;
map<ll,vector<ll> > ger;
map<ll,bool> vis;

void dfs(ll a){
	vis[a]=1;
	FOR(i,ger[a]){
		ll v=ger[a][i];
		if(vis[v]==0){
			dfs(v);
		}
	}
}
int main(){
	ll n;
	cin>>n;
	for(ll i=0;i<n;i++){
		cin>>a[i];
		a[n]^=a[i];
		st.insert(a[i]);
	}
	st.insert(a[n]);
	for(ll i=0;i<n;i++){
		cin>>b[i];
		if(st.find(b[i])==st.end()){
			cout<<-1;
			return 0;
		}
		st.erase(st.find(b[i]));
	}
	b[n]=(*st.begin());
	ll ans=-2;
	for(ll i=0;i<=n;i++){
		if(a[i]!=b[i]){
			ger[a[i]].pb(b[i]);
			ger[b[i]].pb(a[i]);
		}
		ans+=(a[i]!=b[i]);
	}
	for(ll i=0;i<=n;i++){
		if(a[i]!=b[i] && vis[a[i]]==0){
			dfs(a[i]);
			ans++;
		}	
	}
	if(b[n]==a[n])ans++;
	ans=max(ans,(ll)0);
	cout<<ans-1;














Compiler output:
a.cc: In function 'int main()':
a.cc:120:21: error: expected '}' at end of input
  120 |         cout<<ans-1;
      |                     ^
a.cc:86:11: note: to match this '{'
   86 | int main(){
      |           ^
Language: C++

#include<bits/stdc++.h>

using namespace std;

int n,a[100010],a1[100010],b[100010],b1[100010];
int ans=-1,fa[100010],h[19260827],p[19260827],cnt;

inline int hash(int x)
{
	int y=x%19260817;
	while(h[y]>=0&&h[y]!=x)y=(y+1)%19260817;
	return y;
}

inline int f(int x)
{
	if(fa[x]!=x)fa[x]=f(fa[x]);
	return fa[x];
}

int main()
{
	scanf("%d",&n);
	for(int i=1; i<=n; i++)
	{
		scanf("%d",&a[i]);
		a1[i]=a[i];
		a[n+1]^=a[i];
	}
	a1[n+1]=a[n+1];
	for(int i=1; i<=n; i++)
	{
		scanf("%d",&b[i]);
		b1[i]=b[i];
		b[n+1]^=b[i];
	}
	b1[n+1]=b[n+1];
	sort(a1+1,a1+n+2);
	sort(b1+1,b1+n+2);
	for(int i=1; i<=n+1; i++)
	{
		if(a1[i]^b1[i])
		{
			printf("-1");
			return 0;
		}
	}
	memset(h,-1,sizeof(h));
	for(int i=1; i<=n+1; i++)
	{
		if(i==n+1||a[i]^b[i])
		{
			if(i<=n)ans++;
			int k=hash(a[i]);
			if(h[k]==-1)h[k]=a[i],p[k]=++cnt;
			k=hash(b[i]);
			if(h[k]==-1)h[k]=b[i],p[k]=++cnt;
		}
	}
	for(int i=1; i<=cnt; i++)fa[i]=i;
	for(int i=1; i<=n+1; i++)
	{
		if(a[i]^b[i])
		{
			fa[f(p[hash(a[i])])]=f(p[hash(b[i])]);
		}
	}
	for(int i=1; i<=cnt; i++)if(fa[i]==i)ans++;
	printf("%d",ans);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:54:31: error: reference to 'hash' is ambiguous
   54 |                         int k=hash(a[i]);
      |                               ^~~~
In file included from /usr/include/c++/14/string_view:50,
                 from /usr/include/c++/14/bits/basic_string.h:47,
                 from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
   59 |     struct hash;
      |            ^~~~
a.cc:8:12: note:                 'int hash(int)'
    8 | inline int hash(int x)
      |            ^~~~
a.cc:56:27: error: reference to 'hash' is ambiguous
   56 |                         k=hash(b[i]);
      |                           ^~~~
/usr/include/c++/14/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
   59 |     struct hash;
      |            ^~~~
a.cc:8:12: note:                 'int hash(int)'
    8 | inline int hash(int x)
      |            ^~~~
a.cc:65:32: error: reference to 'hash' is ambiguous
   65 |                         fa[f(p[hash(a[i])])]=f(p[hash(b[i])]);
      |                                ^~~~
/usr/include/c++/14/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
   59 |     struct hash;
      |            ^~~~
a.cc:8:12: note:                 'int hash(int)'
    8 | inline int hash(int x)
      |            ^~~~
a.cc:65:50: error: reference to 'hash' is ambiguous
   65 |                         fa[f(p[hash(a[i])])]=f(p[hash(b[i])]);
      |                                                  ^~~~
/usr/include/c++/14/bits/functional_hash.h:59:12: note: candidates are: 'template<class _Tp> struct std::hash'
   59 |     struct hash;
      |            ^~~~
a.cc:8:12: note:                 'int hash(int)'
    8 | inline int hash(int x)
      |            ^~~~
Language: C++

#include <iostream>
#include <map>
#include <set>
#include <algorithm>
using namespace std;
int N, A[100005], B[100005], s = 0;
map <int, int> M;
vector <int> V[100005];
set <int> S;
int ind;
int A2[100005], B2[100005];
bool check()
{
    sort(A2 + 1, A2 + N + 1);
    sort(B2 + 1, B2 + N + 1);
    for(int i = 1; i <= N; i++)
        if(A2[i] != B2[i])
            return 0;
    return 1;
}
void Read()
{
    cin >> N;
    for(int i = 2; i <= N + 1; i++)
        cin >> A[i], A[1] = (A[1] ^ A[i]);
    for(int i = 2; i <= N + 1; i++)
        cin >> B[i], s = (s ^ B[i]);
    B[1] = s;
    ++N;
    for(int i = 1; i <= N; i++)
    {
        A2[i] = A[i];
        B2[i] = B[i];
        if(M.find(B[i]) == M.end())
        {
            M[B[i]] = ++ind;
        }
        int pos = M[B[i]];
        if(A[i] != B[i] && i > 1)
            V[pos].push_back(i);
    }
    for(int i = 1; i <= ind; i++)
        if(V[i].size() > 0)
            S.insert(i);
    for(int i = 1; i <= N; i++)
    {
        A[i] = M[A[i]];
        B[i] = M[B[i]];
    }
}

void Solve()
{
    int ans = 0;
    while(!S.empty())
    {
        if(V[A[1]].size() > 0)
        {
            int pos = V[A[1]].back();
            ans++;
            V[A[1]].pop_back();
            if(V[A[1]].size() == 0)
                S.erase(A[1]);
            swap(A[1], A[pos]);
        }
        else
        {
            int last = *prev(S.end());
            int pos = V[last].back();
            ans++;
            swap(A[1], A[pos]);
        }

    }
    cout << ans << "\n";
}
int main()
{
    Read();
    if(check() == 0)
    {
        cout << "-1\n";
        return 0;
    }
    Solve();
    return 0;
}


Compiler output:
a.cc:8:1: error: 'vector' does not name a type
    8 | vector <int> V[100005];
      | ^~~~~~
a.cc: In function 'void Read()':
a.cc:40:13: error: 'V' was not declared in this scope
   40 |             V[pos].push_back(i);
      |             ^
a.cc:43:12: error: 'V' was not declared in this scope
   43 |         if(V[i].size() > 0)
      |            ^
a.cc: In function 'void Solve()':
a.cc:57:12: error: 'V' was not declared in this scope
   57 |         if(V[A[1]].size() > 0)
      |            ^
Language: C++

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

int main(){
        int N; cin >> N;
        vector<int> a(N + 1):
        vector<int> b(N + 1);
        vector<int> c(N + 1);
        vector<int> d(N + 1);
        for (int i = 0; i < N; i++){
              cin >> a[i];
              c[i] = a[i];
        }
        for (int i = 0; i < N; i++){
              cin >> b[i];
              d[i] = b[i];
        }
        int x = 0;
        int y = 0;
        for (int i = 0; i < N; i++){
                x ^= a[i];
         }
         for (int i = 0; i < N; i++){
                y ^= b[i];
         }
        c[N] = x;
        d[N] = y;
        sort(c.begin(), c.end());
        sort(d.begin(), d.end());
        for (int i = 0; i < N + 1; i++){
               if (c[i] != d[i]){
                      cout << -1 << endl;
                       return 0;
               }
       }
       int ans = N;   
       for (int i = 0; i < N; i++){
              if (a[i] == b[i]){
                    ans--;
              }
       }
       cout << ans << endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:29: error: expected ',' or ';' before ':' token
    6 |         vector<int> a(N + 1):
      |                             ^
a.cc:15:22: error: 'b' was not declared in this scope
   15 |               cin >> b[i];
      |                      ^
a.cc:24:22: error: 'b' was not declared in this scope
   24 |                 y ^= b[i];
      |                      ^
a.cc:38:27: error: 'b' was not declared in this scope
   38 |               if (a[i] == b[i]){
      |                           ^