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

#include <bits/stdc++.h>

#define ll long long
#define ull unsigned long long
#define FOR(i,a,b) for (int i=(a);i<(b);++i)
#define REP(a,b) for(int a=0;a<(b);++a)
#define REP1(i,n) for(int i=1;i<=(n);++i)
#define debug(x) cerr<<#x<<": "<<x<<'\n'
#define all(x) (x).begin(),(x).end()
#define SZ(x) ((int)(x).size())
#define pb push_back
#define mp make_pair
#define INF (1<<29)
using namespace std;
typedef pair<int, int> P;
typedef pair<ll, ll> LP;
typedef pair<int, P> PP;
typedef pair<ll, LP> LPP;

int dy[]={0, 0, 1, -1, 0};
int dx[]={1, -1, 0, 0, 0};

template<class T=int>
T in(){T x;cin>>x;return (x);}
template<class T>
void print(T& x){cout<<x<<'\n';}

const int MOD =(int)1e9+7;
const int MAX =510000;
ll fac[MAX],finv[MAX],inv[MAX];
void COMint(){
    fac[0]=fac[1]=1;
    finv[0]=finv[1]=1;
    inv[1]=1;
    for(int i=2;i<MAX;i++){
        fac[i]=fac[i-1]*i%MOD;
        inv[i]=MOD-inv[MOD%i]*(MOD/i)%MOD;
        finv[i]=finv[i-1]*inv[i]%MOD;
    }
}
ll COM(int n,int k){
    if(n<k) return 0;
    if(n<0||k<0)return 0;
    return fac[n]*(finv[k]*finv[n-k]%MOD)%MOD;
}
ll gcd(ll a,ll b){
    if(b==0)return a;
    if(a>b){
        swap(a,b);
    }
    return gcd(a,b%a);
}
ll lcm(ll a,ll b){
    ll g;g=gcd(a,b);
    return a*b/g;
}
bool compare_by_b(pair<int, int> a, pair<int, int> b) {
    if(a.second != b.second){
        return a.second < b.second;
    }else{
        return a.first < b.first;
    }
}

bool compare_by_a(pair<int, int> a, pair<int, int> b) {
    if(a.first != b.first){
        return a.first < b.first;
    }else{
        return a.second < b.second;
    }
}

vector<pair<int,ll>> vec[100000];
ll cost[100000];
void dfs(int now,ll COST){
    cost[now]=COST;
    int next;
    REP(i,vec[now].size()){
        next=vec[now][i].first;
        if(cost[next]<0){
            dfs(next,COST+vec[now][i].second);
        }
    }
}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int N=in();
    int a[N];
    REP(i,N){
        cin>>a[i];
    }
    int A[N]={};
    vector<int> B;
    for(int i=N-1;i>0;i--){
        int cnt=0;
        REP(j,N){
            if((i+1)*(j+1)>N){
                break;
            }
            cnt+=A[j];
        }
        if(a[i]!=cnt%2){
            B.pb(i+1);
            A[i]=(A[i]+1)%2;
        }
    }
    int cnt_=0;
    REP(i,N){
        cnt+=A[i];
    }
    if()
    cout<<B.size()<<endl;
    if(B.size()==0)return 0;
    REP(i,B.size()){
        cout<<B[i];
        if(i<B.size()-1)cout<<" ";
    }
    cout<<endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:110:9: error: 'cnt' was not declared in this scope; did you mean 'cnt_'?
  110 |         cnt+=A[i];
      |         ^~~
      |         cnt_
a.cc:112:8: error: expected primary-expression before ')' token
  112 |     if()
      |        ^
Language: C++

#include <bits/stdc++.h>

#define ll long long
#define ull unsigned long long
#define FOR(i,a,b) for (int i=(a);i<(b);++i)
#define REP(a,b) for(int a=0;a<(b);++a)
#define REP1(i,n) for(int i=1;i<=(n);++i)
#define debug(x) cerr<<#x<<": "<<x<<'\n'
#define all(x) (x).begin(),(x).end()
#define SZ(x) ((int)(x).size())
#define pb push_back
#define mp make_pair
#define INF (1<<29)
using namespace std;
typedef pair<int, int> P;
typedef pair<ll, ll> LP;
typedef pair<int, P> PP;
typedef pair<ll, LP> LPP;

int dy[]={0, 0, 1, -1, 0};
int dx[]={1, -1, 0, 0, 0};

template<class T=int>
T in(){T x;cin>>x;return (x);}
template<class T>
void print(T& x){cout<<x<<'\n';}

const int MOD =(int)1e9+7;
const int MAX =510000;
ll fac[MAX],finv[MAX],inv[MAX];
void COMint(){
    fac[0]=fac[1]=1;
    finv[0]=finv[1]=1;
    inv[1]=1;
    for(int i=2;i<MAX;i++){
        fac[i]=fac[i-1]*i%MOD;
        inv[i]=MOD-inv[MOD%i]*(MOD/i)%MOD;
        finv[i]=finv[i-1]*inv[i]%MOD;
    }
}
ll COM(int n,int k){
    if(n<k) return 0;
    if(n<0||k<0)return 0;
    return fac[n]*(finv[k]*finv[n-k]%MOD)%MOD;
}
ll gcd(ll a,ll b){
    if(b==0)return a;
    if(a>b){
        swap(a,b);
    }
    return gcd(a,b%a);
}
ll lcm(ll a,ll b){
    ll g;g=gcd(a,b);
    return a*b/g;
}
bool compare_by_b(pair<int, int> a, pair<int, int> b) {
    if(a.second != b.second){
        return a.second < b.second;
    }else{
        return a.first < b.first;
    }
}

bool compare_by_a(pair<int, int> a, pair<int, int> b) {
    if(a.first != b.first){
        return a.first < b.first;
    }else{
        return a.second < b.second;
    }
}

vector<pair<int,ll>> vec[100000];
ll cost[100000];
void dfs(int now,ll COST){
    cost[now]=COST;
    int next;
    REP(i,vec[now].size()){
        next=vec[now][i].first;
        if(cost[next]<0){
            dfs(next,COST+vec[now][i].second);
        }
    }
}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int N=in();
    int a[N];
    REP(i,N){
        cin>>a[i];
    }
    int A[N]={};
    vector<int> B;
    for(int i=N-1;i>=0;i--){
        if(a[i]!=A[i]){
            B.pb(i+1);
            REP(j,i+1){
                if((i+1)%(j+1)==0){
                    A[j]++;
                    A[j]%=2;
                }
            }
        }
    }
    cout<<B.size()<<endl;
    if(B.size()==0)return;
    REP(i,B.size()){
        cout<<B[i];
        if(i<B.size()-1)cout<<" ";
    }
    cout<<endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:107:20: error: return-statement with no value, in function returning 'int' [-fpermissive]
  107 |     if(B.size()==0)return;
      |                    ^~~~~~
Language: C++

#pragma GCC optimize "03"
#include "bits/stdc++.h"
using namespace std;
 
#define ll long long int
#define ld long double
#define pi pair<int, int>
#define pb push_back
#define fi first
#define se second
#define IOS ios::sync_with_stdio(false); cin.tie(0); cout.tie(0)
#ifndef LOCAL
#define endl '\n'
#endif
 
const int N = 2e5 + 5;
const int mod = 1e9 + 7;
const int inf = 1e9 + 9;

int a[N], b[N];
 
signed main() {
	IOS;
	#ifdef LOCAL
		freopen("input.txt","r", stdin);
		freopen("output.txt","w",stdout);
	#endif
	int n;	cin >> n;
	for(int i = 1; i <= n; i++)
		cin >> a[i];
	for(int i = n; i >= 1; i--){
		int x = 0;
		for(int j = 2; j*i <= n; j++)
			x += b[j*i];
		x %= 2;
		if(x != a[i])	b[i] = 1, v.push_back(i);	
	}	
	reverse(v.begin(), v.end());
	cout << v.size() << endl;
	for(auto i: v)
		cout << i << " ";
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:36:43: error: 'v' was not declared in this scope
   36 |                 if(x != a[i])   b[i] = 1, v.push_back(i);
      |                                           ^
a.cc:38:17: error: 'v' was not declared in this scope
   38 |         reverse(v.begin(), v.end());
      |                 ^
Language: C++

#pragma GCC optimize "03"
#include "bits/stdc++.h"
using namespace std;
 
#define ll long long int
#define ld long double
#define pi pair<int, int>
#define pb push_back
#define fi first
#define se second
#define IOS ios::sync_with_stdio(false); cin.tie(0); cout.tie(0)
#ifndef LOCAL
#define endl '\n'
#endif
 
const int N = 2e5 + 5;
const int mod = 1e9 + 7;
const int inf = 1e9 + 9;

int a[N], b[N];
 
signed main() {
	IOS;
	#ifdef LOCAL
		freopen("input.txt","r", stdin);
		freopen("output.txt","w",stdout);
	#endif
	int n;	cin >> n;
	for(int i = 1; i <= n; i++)
		cin >> a[i];
	for(int i = n; i >= 1; i--){
		int x = 0;
		for(int j = 2; j*i <= n; j++)
			x += b[j*i]
		x %= 2;
		if(x != a[i])	b[i] = 1, v.push_back(i);	
	}	
	reverse(v.begin(), v.end());
	cout << v.size() << endl;
	for(auto i: v)
		cout << i << " ";
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:34:36: error: expected ';' before 'x'
   34 |                         x += b[j*i]
      |                                    ^
      |                                    ;
   35 |                 x %= 2;
      |                 ~                   
a.cc:36:43: error: 'v' was not declared in this scope
   36 |                 if(x != a[i])   b[i] = 1, v.push_back(i);
      |                                           ^
a.cc:38:17: error: 'v' was not declared in this scope
   38 |         reverse(v.begin(), v.end());
      |                 ^
Language: C++

#include<bits/stdc++.h>
#define REP(i,n) for(int i=0; i<(n); i++)
#define FOR(i,a,b) for(int i=(a); i<(b); i++)
#define ALL(v) v.begin(), v.end()
#define size(x) int(x.size())
typedef long long ll;
using namespace std;
int main(){
    int N; cin >> N;
    vector<int> a(N+1);
    REP(i,N) cin >> a[i+1];
    vector<int> b(N+1);

    for(int i = N; i>=1; i--){
        int tmp = 0;
        for(int j = i+i; j<=N; j += i){
            tmp += b[j];
        }
        if(tmp % 2 == a[i] % 2){b[i] = 0;}
        else{b[i] = 1;}
    }

    vector<int> ans;
    for(int i = 1;i<=N;i++){
        if(a[i]) ans.push_back(i);
    }
    cout <<ans.size() <<endl;

    REP(i,ans.size()){
         printf("%d%c", ans[i], i+1==ans.size()?'\n':' ');
    }
    
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:17: error: expected unqualified-id before 'int'
    5 | #define size(x) int(x.size())
      |                 ^~~
a.cc:27:16: note: in expansion of macro 'size'
   27 |     cout <<ans.size() <<endl;
      |                ^~~~
a.cc:5:17: error: expected unqualified-id before 'int'
    5 | #define size(x) int(x.size())
      |                 ^~~
a.cc:2:34: note: in definition of macro 'REP'
    2 | #define REP(i,n) for(int i=0; i<(n); i++)
      |                                  ^
a.cc:29:15: note: in expansion of macro 'size'
   29 |     REP(i,ans.size()){
      |               ^~~~
a.cc:5:17: error: expected ')' before 'int'
    5 | #define size(x) int(x.size())
      |                 ^~~
a.cc:2:34: note: in definition of macro 'REP'
    2 | #define REP(i,n) for(int i=0; i<(n); i++)
      |                                  ^
a.cc:29:15: note: in expansion of macro 'size'
   29 |     REP(i,ans.size()){
      |               ^~~~
a.cc:2:33: note: to match this '('
    2 | #define REP(i,n) for(int i=0; i<(n); i++)
      |                                 ^
a.cc:29:5: note: in expansion of macro 'REP'
   29 |     REP(i,ans.size()){
      |     ^~~
a.cc:5:17: error: expected unqualified-id before 'int'
    5 | #define size(x) int(x.size())
      |                 ^~~
a.cc:30:42: note: in expansion of macro 'size'
   30 |          printf("%d%c", ans[i], i+1==ans.size()?'\n':' ');
      |                                          ^~~~
Language: C++

#include<bits/stdc++.h>

using namespace std;

#define MAX 200005
#define pb push_back

int a[MAX],f[MAX];

int main(){
	int n;
  	cin>>n;
  	for(int i=1;i<=n;i++){
      cin>>a[i];
    }
  	vector<int> ans;
  	for(int j=n;j>=1;--j){
    	int s=0;
      	for(int i=j+j;i<=n;i+=j){
        	s+=f[i];
        }
      	if(s%2!=a[j]%2){
          	ans.pb(i);
        	f[j]=1;
        }
    }
  cout<<ans.size()<<endl;
  for(int i=0;i<ans.size();++i){
  	cout<<ans[i]<<" ";
  }
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:24: error: 'i' was not declared in this scope
   23 |                 ans.pb(i);
      |                        ^
Language: C++

#include<bits/stdc++.h>

using namespace std;

#define MAX 200005

int a[MAX],f[MAX];

int main(){
	int n;
  	cin>>n;
  	for(int i=1;i<=n;i++){
      cin>>a[i];
    }
  	bool flag=false;
  	vector<int> 
  	for(int j=n;j>=1;--j){
    	int s=0;
      	for(int i=j+j;i<=n;i+=j){
        	s+=f[i];
        }
      	if(s%2!=a[j]%2){
        	f[j]=1;
        }
    }
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:9: error: expected unqualified-id before 'for'
   17 |         for(int j=n;j>=1;--j){
      |         ^~~
a.cc:17:21: error: 'j' was not declared in this scope
   17 |         for(int j=n;j>=1;--j){
      |                     ^
Language: C++

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

int main(){
  int n;
  cin >> n;
  vector<int> a(n+1);
  for(int i=1;i<=n;i++){
    cin >> a[i];
  }
  
  for(int j=n;n<=1;j--){
    int sum = 0;
    for(int k=j+j;j<=n;k+=j){
      sum ^= b[k];
    }
    b[j] = sum^a[j];
  }
  vector<int> ans;
  for(int i=1;i<=n;i++){
    if(b[i]) ans.push_back(i);
  }
  
  cout << ans.size() << endl;
  
  rep(i+1,n+1){
    cout << ans[i] <<endl;
  }
}
        


Compiler output:
a.cc: In function 'int main()':
a.cc:16:14: error: 'b' was not declared in this scope
   16 |       sum ^= b[k];
      |              ^
a.cc:18:5: error: 'b' was not declared in this scope
   18 |     b[j] = sum^a[j];
      |     ^
a.cc:22:8: error: 'b' was not declared in this scope
   22 |     if(b[i]) ans.push_back(i);
      |        ^
a.cc:27:8: error: expected ';' before '+' token
   27 |   rep(i+1,n+1){
      |        ^
a.cc:2:26: note: in definition of macro 'rep'
    2 | #define rep(i,n) for(int i=0;i<n;i++)
      |                          ^
a.cc:27:8: error: lvalue required as left operand of assignment
   27 |   rep(i+1,n+1){
      |        ^~
a.cc:2:26: note: in definition of macro 'rep'
    2 | #define rep(i,n) for(int i=0;i<n;i++)
      |                          ^
a.cc:2:33: error: expected ')' before ';' token
    2 | #define rep(i,n) for(int i=0;i<n;i++)
      |                     ~           ^
a.cc:27:3: note: in expansion of macro 'rep'
   27 |   rep(i+1,n+1){
      |   ^~~
a.cc:27:7: error: 'i' was not declared in this scope
   27 |   rep(i+1,n+1){
      |       ^
a.cc:2:34: note: in definition of macro 'rep'
    2 | #define rep(i,n) for(int i=0;i<n;i++)
      |                                  ^
a.cc:27:9: error: lvalue required as increment operand
   27 |   rep(i+1,n+1){
      |         ^
a.cc:2:34: note: in definition of macro 'rep'
    2 | #define rep(i,n) for(int i=0;i<n;i++)
      |                                  ^
Language: C++

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

int main(){
  int n;
  cin >> n;
  vector<int> a(n+1);
  for(int i=1;i<=n;i++){
    cin >> a[i];
  }
  
  for(int j=n;n<=1;j--){
    int sum = 0;
    for(int k=j+j;j<=n;k+=j){
      sum ^= b[k];
    }
    b[j] = sum^a[j];
  }
  vector<int> ans;
  for(int i=1;i<n;i++){
    if(b[i]) ans.push_back(i);
  }
  
  cout << ans.size() << endl;
  
  rep(i+1,n+1){
    cout << ans[i] <<endl;
  }
}
        

Compiler output:
a.cc: In function 'int main()':
a.cc:16:14: error: 'b' was not declared in this scope
   16 |       sum ^= b[k];
      |              ^
a.cc:18:5: error: 'b' was not declared in this scope
   18 |     b[j] = sum^a[j];
      |     ^
a.cc:22:8: error: 'b' was not declared in this scope
   22 |     if(b[i]) ans.push_back(i);
      |        ^
a.cc:27:8: error: expected ';' before '+' token
   27 |   rep(i+1,n+1){
      |        ^
a.cc:2:26: note: in definition of macro 'rep'
    2 | #define rep(i,n) for(int i=0;i<n;i++)
      |                          ^
a.cc:27:8: error: lvalue required as left operand of assignment
   27 |   rep(i+1,n+1){
      |        ^~
a.cc:2:26: note: in definition of macro 'rep'
    2 | #define rep(i,n) for(int i=0;i<n;i++)
      |                          ^
a.cc:2:33: error: expected ')' before ';' token
    2 | #define rep(i,n) for(int i=0;i<n;i++)
      |                     ~           ^
a.cc:27:3: note: in expansion of macro 'rep'
   27 |   rep(i+1,n+1){
      |   ^~~
a.cc:27:7: error: 'i' was not declared in this scope
   27 |   rep(i+1,n+1){
      |       ^
a.cc:2:34: note: in definition of macro 'rep'
    2 | #define rep(i,n) for(int i=0;i<n;i++)
      |                                  ^
a.cc:27:9: error: lvalue required as increment operand
   27 |   rep(i+1,n+1){
      |         ^
a.cc:2:34: note: in definition of macro 'rep'
    2 | #define rep(i,n) for(int i=0;i<n;i++)
      |                                  ^
Language: C++

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

void check(vector<bool> &a, int i) {
  for (int j = 1; j * j <= i; j++) {
    if (i % j == 0) {
      a[j] = !a[j];
      a[i / j] = !a[i / j];
      if (j * j = i) {
        a[i / j] = !a[i / j];
      }
    }
  }
}

int main() {
  int N;
  cin >> N;
  
  vector<bool> a(N + 1);
  int temp;
  for (int i = 1; i <= N; i++) {
    cin >> temp;
    a[i] = (temp == 1);
  }
  
  vector<bool> b(N + 1, false);
  
  int cnt = 0;
  
  for (int i = N; i >= 1; i--) {
    if (a[i]) {
      cnt++;
      b[i] = true;
      check(a, i);
    }
  }
  
  cout << cnt << endl;
  
  for (int i = 1; i <= cnt; i++) {
    if (b[i]) cout << b[i] << " ";
  }
}

Compiler output:
a.cc: In function 'void check(std::vector<bool>&, int)':
a.cc:9:13: error: lvalue required as left operand of assignment
    9 |       if (j * j = i) {
      |           ~~^~~
Language: Java

import java.util.*;
class Main{
	public static void main(String[] args){
		Scanner sc=new Scanner(System.in);
		int N=sc.nextInt();
		int[] A=new int[N+1];
		A[0]=0;
		for(int i=1;i<=N;i++){
			A[i]=sc.nextInt();
		}
		int[] dp=new int[N+1];
		
		if(A[N]==0){
			dp[N]=0;
		}else{
			dp[N]=1;
		}
		
		for(int i=N-1;i>=1;i--){
			int sum=0;
			for(int j=i+1;j<=N;j++){
				if(j%i==0&&dp[j]==1)
				sum++;
			}
			if(sum%2==A[i]){
				dp[i]=0;
			}else{
				dp[i]=1;
			}
		}
		int count=0;
		for(int i=1;i<=N;i++){
			if(dp[i]==1)
				count++;
		}
		
		
			System.out.println(count);
			for(int i=1;i<=N;i++){
				if(dp[i]==1){
					System.out.println(i);
				
				}
			}
		}
	}
}		
		

Compiler output:
Main.java:47: error: class, interface, enum, or record expected
}		
^
1 error
Language: Java

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
				
				int a[] = new int[n + 1];//添え字で１～ｎまでにしているので、１つ要素を多く持たせる
				int b[] = new int[n + 1];
				int cnt = 0;

				//pos以降はa[i]をb[i]にコピーすればよい（pos以降のiの倍数は１つしか存在しないため、a[i]の値と一致する）
				int pos = n / 2 + n % 2;
				for (int i = 1; i <= n; i++) {
					a[i] = sc.nextInt();
					
					if (i > pos ) {
						b[i] = a[i];
						if(a[i]==1)cnt++;
					}
				}
				for (int i = pos; i >= 1; i--) {
					int ballCnt = 0;
					for (int j = i; j <= n; j += i)ballCnt += b[j];
					if (ballCnt % 2 != a[i]) {
						b[i] = 1;
						cnt++;
					}
				}
				for (int i = 1; i <= n; i++) {
					if (b[i] == 1)System.out.println(i);
				}
    }
}

Compiler output:
Main.java:7: error: cannot find symbol
				int a[] = new int[n + 1];//????????????????????????????
				                  ^
  symbol:   variable n
  location: class Main
Main.java:8: error: cannot find symbol
				int b[] = new int[n + 1];
				                  ^
  symbol:   variable n
  location: class Main
Main.java:12: error: cannot find symbol
				int pos = n / 2 + n % 2;
				          ^
  symbol:   variable n
  location: class Main
Main.java:12: error: cannot find symbol
				int pos = n / 2 + n % 2;
				                  ^
  symbol:   variable n
  location: class Main
Main.java:13: error: cannot find symbol
				for (int i = 1; i <= n; i++) {
				                     ^
  symbol:   variable n
  location: class Main
Main.java:23: error: cannot find symbol
					for (int j = i; j <= n; j += i)ballCnt += b[j];
					                     ^
  symbol:   variable n
  location: class Main
Main.java:29: error: cannot find symbol
				for (int i = 1; i <= n; i++) {
				                     ^
  symbol:   variable n
  location: class Main
7 errors
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
#define vvi vector< vector<int> >
#define vi vector<int>
#define All(X) X.begin(),X.end()
#define FOR(i,a,b) for(int i=(int)(a);i<(int)(b);i++)
#define REP(i,n) for(int i=0;i<(int)(n);i++)
#define pb push_back
#define pii pair<int,int>
#define mp make_pair
#define shosu(X) fixed << setprecision(X)
ll gcd(ll a,ll b){return b?gcd(b,a%b):a;}
ll lcm(ll a,ll b){return a/gcd(a,b)*b;}
 
int n;
bool a[200000];
bool b[200000];
vi ans;

int main(){
  cin >> n;
  REP(i, n) cin >> a[i];
  int cnt = 0;
  for(int i = n; i >= 1; i--){
    bool t = a[i-1];
    for(int j = i * 2; j <= n; j+=i){
      if(b[j-1]) t = !t;
    }
    if(t) ans.pb(i);
    b[j-1] = t;
  }
  cout << ans.size() << endl;
  REP(i, ans.size()){
    cout << ans[i] << endl;
  }

}

Compiler output:
a.cc: In function 'int main()':
a.cc:32:7: error: 'j' was not declared in this scope
   32 |     b[j-1] = t;
      |       ^
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main(void)
{

    int n;
    vector<int> a;
    vector<int> balls;

    cin >> n;

    int push;
    for (int i = 0; i < n; i++)
    {
        cin >> push;
        a.push_back(push);
        balls.push_back(push);
    }

    int times;

    for (int i = n - 1; i >= 0; i--)
    {
        times = n / (i+1);
        for (int j = times; j >0; j--)
        {
            if (balls.at(times * (i+1) -1) == 1)
            {
                if (balls.at(i) == 0)
                {
                    balls.at(i) = 1;
                }
                else
                {
                    balls.at(i) = 0;
                }
            }
        }
    }

    vector<int> result;
    int M=0;

    for (int i = 0; i < n; i++)
    {
        if(balls.at(i)==1){
            result.push_back(i+1);
            M++;
        }
    }
  
  cout << M << endl;
  for(int i=0;i<M;i++){
     cout << result.at(i);
    if(i != M-1){
      cout << " ";
    }
  }
  cout << "" << endl;

Compiler output:
a.cc: In function 'int main()':
a.cc:61:22: error: expected '}' at end of input
   61 |   cout << "" << endl;
      |                      ^
a.cc:6:1: note: to match this '{'
    6 | {
      | ^
Language: C++

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


int main(){
  int n,m;cin>>n;
  vector<int>v(n);
  vector<int>ans(n,0);
  rep(i,n){
    cin>>v[i];
  }
  for(int i=n-1;i>=0;i--){
    int a=n/(i+1),sum=0;
    for(int j=2;j<=a;j++){
      sum+=ans[(i+1)*j-1];
      sum%=2;
    }
    if((sum+v[i])%2==0)ans[i]=0;
    else ans[i]=1;
  rep(i,n){
    if(i)cout<<' ';
    cout<<ans[i];
  }
  cout<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:26:2: error: expected '}' at end of input
   26 | }
      |  ^
a.cc:6:11: note: to match this '{'
    6 | int main(){
      |           ^
Language: C++

#include<stdio.h>
int main(){
 int N;
 scanf("%d",&N);
 int a[N];
 int x[N];
 for(int i=0;i<N;i++){
   scanf("%d",&a[i]);
   x[i]=0;
 }
 int a=0; //iの倍数番目に入っている玉の合計
  int b=0;//玉が入っている箱の数
 for(int i=N-1;i>=0;i--){
   a=0;
   for(int j=i;j<N;j=j+i+1){
     a=a+x[j];
   }
   if(a[i]!=a%2)
     x[i]++;
   if(x[i]==1)
     b++;
 }
  printf("%d\n",b);
  for(int i=0;i<N;i++){
    if(x[i]==1)
      printf("%d\n",i);
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:6: error: conflicting declaration 'int a'
   11 |  int a=0; //iの倍数番目に入っている玉の合計
      |      ^
a.cc:5:6: note: previous declaration as 'int a [N]'
    5 |  int a[N];
      |      ^
a.cc:14:5: error: incompatible types in assignment of 'int' to 'int [N]'
   14 |    a=0;
      |    ~^~
a.cc:16:7: error: incompatible types in assignment of 'int*' to 'int [N]'
   16 |      a=a+x[j];
      |      ~^~~~~~~
a.cc:18:14: error: invalid operands of types 'int [N]' and 'int' to binary 'operator%'
   18 |    if(a[i]!=a%2)
      |             ~^~
      |             | |
      |             | int
      |             int [N]
Language: C++

#include<stdio.h>
int main(){
 int N;
 scanf("%d",&N);
 int a[N];
 int x[N];
 for(int i=0;i<N;i++){
   scanf("%d",&a[i]);
   x[i]=0;
 }
 int a=0; /iの倍数番目に入っている玉の合計
  int b=0;/玉が入っている箱の数
 for(int i=N-1;i>=0;i--){
   a=0;
   for(int j=i;j<N;j=j+i+1){
     a=a+x[j];
   }
   if(a[i]!=a%2)
     x[i]++;
   if(x[i]==1)
     b++;
 }
  printf("%d\n",b);
  for(int i=0;i<N;i++){
    if(x[i]==1)
      printf("%d\n",i);
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:6: error: conflicting declaration 'int a'
   11 |  int a=0; /iの倍数番目に入っている玉の合計
      |      ^
a.cc:5:6: note: previous declaration as 'int a [N]'
    5 |  int a[N];
      |      ^
a.cc:11:11: error: expected primary-expression before '/' token
   11 |  int a=0; /iの倍数番目に入っている玉の合計
      |           ^
a.cc:11:12: error: 'i\U0000306e\U0000500d\U00006570\U0000756a\U000076ee\U0000306b\U00005165\U00003063\U00003066\U00003044\U0000308b\U00007389\U0000306e\U00005408\U00008a08' was not declared in this scope
   11 |  int a=0; /iの倍数番目に入っている玉の合計
      |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
a.cc:12:11: error: expected primary-expression before '/' token
   12 |   int b=0;/玉が入っている箱の数
      |           ^
a.cc:12:12: error: '\U00007389\U0000304c\U00005165\U00003063\U00003066\U00003044\U0000308b\U00007bb1\U0000306e\U00006570' was not declared in this scope
   12 |   int b=0;/玉が入っている箱の数
      |            ^~~~~~~~~~~~~~~~~~~~
a.cc:13:16: error: 'i' was not declared in this scope
   13 |  for(int i=N-1;i>=0;i--){
      |                ^
a.cc:23:17: error: 'b' was not declared in this scope
   23 |   printf("%d\n",b);
      |                 ^
Language: C++

#include"bits/stdc++.h"
using namespace std;
#define ll long long
#define LL long long
#define MOD 1000000007
ll N, M, K,H,W,  mi1,mi2,sum;
string s;
int main() {
	cin >> N;
	vector<LL> A(N+1),ans(N+1);
	for (int i = 1; i <= N; i++) {
		cin >> A[i];
	}
	for (int i = N; i > 0; i--) {
		if (N / i > 1) {
			if (A[i] == 1) {
				if (A[i * 2] == 1) {
					ans[i] = 0;
				}
				else {
					ans[i] = 1;
				}
			}
			else {
				if (A[i * 2] == 1) {
					ans[i] = 1;
				}
				else {
					ans[i] = 0;
				}
			}
		}
		else {
			ans[i] = A[i];
		}
	}
	K = 0;
	for (int i = 1; i =< N; i++) {
		if (ans[i] == 1)K++;
	}
	cout << K << endl;
	for (int i = 1; i <= N; i++) {
		if (ans[i] == 1)cout << i;
		cout << " ";
	}
	cout << endl;
	return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:38:28: error: expected primary-expression before '<' token
   38 |         for (int i = 1; i =< N; i++) {
      |                            ^
Language: C++

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

int main(){
	int n;
	cin >> n;
	vector<int> a(n+1);
	rep(i, n) cin >> a[i+1];
	vector<int> b(n+1);
	for(int i = n; i >= 1; --i);{
		int sum = 0;
		for(int j = i+i; j <= n; j += i){
			sum ^= b[j];
		}
		b[i] = sum^a[i];
	}
	vector<int> ans;
	for( int i = 1; i <= n; i++ ){
		if(b[i]) ans.push_back(i);
	}
	cout << ans.size() << endl;
	rep(i, ans.size()){
		printf("%d%c", ans[i], i+1 == ans.size()?'\n':' ');
	}
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:29: error: 'i' was not declared in this scope
   13 |                 for(int j = i+i; j <= n; j += i){
      |                             ^
a.cc:16:19: error: 'i' was not declared in this scope
   16 |                 b[i] = sum^a[i];
      |                   ^
Language: C++

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

int main(){
	int n;
	cin >> n;
	vector<int> a(n+1);
	rep(i, n) cin >> a[i+1];
	vector<int> b(n+1);
	for(int i = n; i >= 1; --i);{
		int sum = 0;
		for(int j = i+i; j <= n; += i){
			sum ^= b[j];
		}
		b[i] = sum^a[i];
	}
	vector<int> ans;
	for( int i = 1; i <= n; i++ ){
		if(b[i]) ans.push_back(i);
	}
	cout << ans.size() << endl;
	rep(i, ans.size()){
		printf("%d%c", ans[i], i+1 == ans.size()?'\n':' ');
	}
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:29: error: 'i' was not declared in this scope
   13 |                 for(int j = i+i; j <= n; += i){
      |                             ^
a.cc:13:42: error: expected primary-expression before '+=' token
   13 |                 for(int j = i+i; j <= n; += i){
      |                                          ^~
a.cc:16:19: error: 'i' was not declared in this scope
   16 |                 b[i] = sum^a[i];
      |                   ^
Language: C++

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

int main(){
	int n;
	cin >> n;
	vector<int> a(n+1);
	rep(i, n) cin >> a[i+1];
	vector<int> b(n+1);
	for(int i = n; i >= 1; --i);{
		int sum = 0;
		for(int j = i+i; j <= n; += i){
			sum ^= b[j];
		}
		b[i] = sum^a[i];
	}
	vector<int> ans;
	for( int i = 1; i <= n; i++ ){
		if(b[i]) ans.push_back(i);
	}
	cout << ans.size() << endl;
	rep(i, ans.size()){
		printf("%d%c", ans[i], i+1 == ans.size()?'\n':' ')
	}
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:29: error: 'i' was not declared in this scope
   13 |                 for(int j = i+i; j <= n; += i){
      |                             ^
a.cc:13:42: error: expected primary-expression before '+=' token
   13 |                 for(int j = i+i; j <= n; += i){
      |                                          ^~
a.cc:16:19: error: 'i' was not declared in this scope
   16 |                 b[i] = sum^a[i];
      |                   ^
a.cc:24:67: error: expected ';' before '}' token
   24 |                 printf("%d%c", ans[i], i+1 == ans.size()?'\n':' ')
      |                                                                   ^
      |                                                                   ;
   25 |         }
      |         ~
Language: C++

#include<iostream>
using namespace std;
int n,m,ans=2;
int a[200005],b[200005];
int main(){
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a[i];
	}
	for(int i=n;i>=1;i--){
		if(i*2<=n){
			for(int j=i*ans;j<=n;ans++){
				sum+=b[j];
				if(sum==a[i]){
					sum=0;
					continue;
				}
				else {
					b[j]=1;
					m++;
				}
			}
			ans=2;
		}
	}
	cout<<m<<endl;
	for(int i=1;i<=n;i++){
		if(b[i]!=0){
			cout<<i<<endl;
		}
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:33: error: 'sum' was not declared in this scope
   13 |                                 sum+=b[j];
      |                                 ^~~
Language: C++

#include <cstdio>
using namespace std;
long long t;
int min(int a,long long b){
	if(a>b)	return b;
	return a;
}
int main(){
	long long a,b,minn=0x6f6f6f6f6f6f6f6f6f6f6f6f6f;
	scanf("%d %d",&a,&b);
	a%=2019,b%=2019;
	if(a>=b){
		printf("0");
		return 0;
	}
	if(b/r==2019){
		printf("0");
		return 0;
	}
	for(int i=a;i<=b;i++){
		for(int j=i+1;j<=b;j++){
			if(i%2019==0||j%2019==0){
				printf("0");
				return 0;
			}
			minn=min(minn,(i*j)%2019);
		}
	}
	printf("%d",minn);
	return 0;
}

Compiler output:
a.cc:9:28: warning: integer constant is too large for its type
    9 |         long long a,b,minn=0x6f6f6f6f6f6f6f6f6f6f6f6f6f;
      |                            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
a.cc: In function 'int main()':
a.cc:16:14: error: 'r' was not declared in this scope
   16 |         if(b/r==2019){
      |              ^
Language: C++

#include<bits/stdc++.h>

using namespace std;
const int N = 2e5 + 5;

int n;
int a[N];
set<int> s;

int main()
{
  cin >> n;
  for (int i=1; i<=n; i++) cin >> a[i];
  for (int i=1; i<=n; i++)
  {
    if (a[i]==0) continue;
    s.insert(i);
    int cnt = 1;
    for (int j=i+i; j<=n; j+=i)
    {
      if (a[j]==1)
      {
        s.insert(j);
        cnt++;
      }
    }
    if (cnt%2==0) return cout << "-1", 0;
  }
  cout << s.size() << '\n';
  for (auto it = s.begin(), it!=s.end(); it++) cout << *it << " ";
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:30:31: error: expected ';' before '!=' token
   30 |   for (auto it = s.begin(), it!=s.end(); it++) cout << *it << " ";
      |                               ^~
      |                               ;
a.cc:30:31: error: expected primary-expression before '!=' token
   30 |   for (auto it = s.begin(), it!=s.end(); it++) cout << *it << " ";
      |                               ^~
Language: C


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

using VI = vector<int>;

int main(void){
    int n, ii, kk;
    int temp;
    cin >> n;
    VI vi(n + 1, 0);
    VI ball(n + 1, 0);
    rep(ii, n){
        cin >> vi[ii + 1];
    }
    /*
    rep(ii, n){
        cout << vi[ii + 1] << " ";
    }
    cout << endl;
    rep(ii, n){
        cout << ball[ii + 1] << " ";
    }
    cout << endl;
     */
    temp = 0;
    for(int i = 1; i <= n; i++){
        temp = 0;
        for(int j = i; j <= n; j+=i ){
            temp += ball[j];
        }
        // cout << "temp, vi, temp%2: " <<temp << vi[i] << temp%2;
        if(vi[i] != (temp % 2)){
            ball[i] = 1;
        }
    }
    int flag = 0;
    rep(ii, n){
        if(ball[ii] == 1){
            cout << ii ;
            flag = 1;
        }
        // cout << endl;
    }
    if(flag == 0){
        cout << "0" << endl;
    }
    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;

int main(){
  int N, sum, c; cin >> N;
  vector<int> a(N); vector<int> b(0);
  
  sum = 0;
  for(int i = 0; i < N; i++){
    cin >> a.at(i);
  }
  
  for(int i = N-1; i > -1; i--){
    int x = N / (i + 1);
    for(int j = 1; j < x + 1; j++){
      sum += a.at(i * j)
    }
     if(sum / 2 == a.at(i))
       b.push_back(i);
       else
      c = -1;

    sum = 0
  }  
	if(c == -1)
  cout << c << endl;
	else{
  cout << b.size() << endl;
  for(int i = 0; i < b.size(); i++){
    cout << b.at(i);
  		}
	cout << endl;
    }
}      

Compiler output:
a.cc: In function 'int main()':
a.cc:16:25: error: expected ';' before '}' token
   16 |       sum += a.at(i * j)
      |                         ^
      |                         ;
   17 |     }
      |     ~                    
a.cc:23:12: error: expected ';' before '}' token
   23 |     sum = 0
      |            ^
      |            ;
   24 |   }
      |   ~
Language: C++

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

//typedef
//------------------------------------------
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef long long LL;

//container util
//------------------------------------------
#define ALL(a)  (a).begin(),(a).end()
#define RALL(a) (a).rbegin(), (a).rend()
#define PB push_back
#define MP make_pair
#define SZ(a) int((a).size())
#define EACH(i,c) for(typeof((c).begin()) i=(c).begin(); i!=(c).end(); ++i)
#define EXIST(s,e) ((s).find(e)!=(s).end())
#define SORT(c) sort((c).begin(),(c).end())

//repetition
//------------------------------------------
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n)  FOR(i,0,n)

int main() {
  int N;
  cin >> N;
  VI a(N), b(N);
  REP(i,N) {
    cin >> a.at(i);
  }
  for(int i = N-1; i => 0; --i) {
    int s=0;
    REP(j,N) {
      if(j%i==0) s++;
    }
    if(s%2 != i%2) b.at(i)++;
  }
  REP(i,N-1) {
    if(b.at(i)) cout << i << ' ';
  }
  if(b.at(N-1)) cout << N-1 << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:35:23: error: expected primary-expression before '>' token
   35 |   for(int i = N-1; i => 0; --i) {
      |                       ^
Language: C++

#include<iostream>
#include<iomanip>
#include<algorithm>
#include<bitset>
#include<cstdio>
#include<cmath>
#include<deque>
#include<map>
#include<numeric>
#include<queue>
#include<set>
#include<sstream>
#include<stack>
#include<string>
#include<tuple>
#include<utility>
#include<vector>
using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<long long> vll;
typedef vector<vector<long long>> vvll;
typedef vector<vector<int>> vvi;

#define rep(i, a, n)  for(int i=a; i<n; i++)
#define REP(i, n)  for(int i=0; i<(int)(n); i++)
#define REPS(i, n)  for(int i=1; i<=(int)(n); i++)
#define PER(i, n) for(int i=(int)(n)-1; i>= 0; i--)
#define PERS(i, n)  for(int i=(int)(n); i>0; i--)
#define FOR(i, c) for(__typeof((c).begin()) i = (c).begin(); i!=(c).end(); i++)
#define RFOR(i, c)  for(__typeof((c).rbegin()) i=(c).rbegin(); i!=(c).end(); i++)
#define ALL(container)  (container).begin(), (container).end()
#define RALL(container) (container).rbegin(), (container).rend()
#define SZ(container) (container).size()
#define FILL0(n)  setfill('0') << right << setw(n)
#define mp(a, b)  make_pair(a, b)
#define toLower(c)  c+0x20
#define toUpper(c)  c-0x20
#define pb  push_back
#define eb  emplace_back

const int INF = 1e9;
const long long LLINF = 1e18;
const int MOD = 1000000007;

int main(){
  int n;  cin >> n;
  vi a(n+1, 0), box(n+1, 0), res;
  int in=0;
  REPS(i, n) cin >> a[i];
  PERS(i, n){
    int cnt = 0;
    for(int j=i; j<=n; j+=i){
      cnt ^= box(j);
    }
    if(cnt != a[i])  {
      box[i]=1;
      res.push_back(i);
    }
  }
  cout << res.size() << endl;
  REPS(i, res.size()){
    if(i>0)cout << " ";
    cout << res[i];
  }
  cout << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:57:17: error: no match for call to '(vi {aka std::vector<int>}) (int&)'
   57 |       cnt ^= box(j);
      |              ~~~^~~
Language: C

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

int main(){
    int N,A[200001],B[200001];
    int i,M;
    M = 0;
    scanf("%d",&N);
    if(N == 0){
        print("-1");
        return 0;
    }
    for(i = 1 ; i <= N ; i++){
        scanf("%d",&A[i]);
    }
    int counter = 1;
    int ball_num = 0;
    for(i = N  ; i > 0 ; i--){
        if(A[i] == 1){
            if(M < i ){
                M = i ;
            }
            while(1){
                if(counter * i > N){
                    break;
                }else{
                    ball_num += B[i];
                }
                counter++;
            }
            counter = 0;
            if(ball_num % 2 == A[i]){
                B[i] = 0;
            }else{
                B[i] = 1;
            }
        }
    }
    printf("%d\n",M);
    for(i = 1;i<= M;i++)
        printf("%d ",B[i]);
    return 0;
}


Compiler output:
main.c: In function 'main':
main.c:10:9: error: implicit declaration of function 'print'; did you mean 'lrint'? [-Wimplicit-function-declaration]
   10 |         print("-1");
      |         ^~~~~
      |         lrint
Language: C++

#include<bits/stdc++.h>
int a[100050];
int main(){
  int n; cin >> n;
  for(int i = 0; i < n; i++){
    cin >> a[i];
  }
  cout << "0";
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:10: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    4 |   int n; cin >> n;
      |          ^~~
      |          std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:8:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    8 |   cout << "0";
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++

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

int main(){
  int N, c; cin >> N;
  vector<int> a(N); vector<int> b(0);
  
  for(int i = 0; i < N; i++){
    cin >> a.at(i);
  }
  
  for(int i = N-1; i > -1; i--){
  if(a.at(i) == 1){
    b.push_back(i + 1);
    int x = N / i;
    for(int j = 1; j < x + 1; j++){
     if(a.at(i * j) == 0)
      c = -1;
    }
    }
  } 
  }  
	if(c == -1)
  cout << c << endl;
	else
  cout << b.size() << endl;
  for(int i = 0; i < b.size(); i++){
    cout << b.at(i);
  }
	cout << endl;
}      

Compiler output:
a.cc:23:9: error: expected unqualified-id before 'if'
   23 |         if(c == -1)
      |         ^~
a.cc:25:9: error: expected unqualified-id before 'else'
   25 |         else
      |         ^~~~
a.cc:27:3: error: expected unqualified-id before 'for'
   27 |   for(int i = 0; i < b.size(); i++){
      |   ^~~
a.cc:27:18: error: 'i' does not name a type
   27 |   for(int i = 0; i < b.size(); i++){
      |                  ^
a.cc:27:32: error: 'i' does not name a type
   27 |   for(int i = 0; i < b.size(); i++){
      |                                ^
a.cc:30:9: error: 'cout' does not name a type
   30 |         cout << endl;
      |         ^~~~
a.cc:31:1: error: expected declaration before '}' token
   31 | }
      | ^
Language: Java

package src_190720;

import java.io.PrintWriter;
import java.util.BitSet;
import java.util.Scanner;

public class D0720 {

	public static void main(String[] args) {
		 Scanner sc = new Scanner(System.in);
		 PrintWriter out = new PrintWriter(System.out);
		 StringBuilder sb = new StringBuilder();
		 
		 int N = sc.nextInt();
		 BitSet in = new BitSet(N + 1);
		 BitSet result = new BitSet(N + 1);
		 
		 for (int i = 1; i <= N; i++) {
			 in.set(i, sc.nextInt() == 1);
		 }
		 
		 for (int i = N; i >= 1; i--) {
			 boolean t = in.get(i);
			 for (int j = i * 2; j < N; j += i) {
				 t ^= in.get(j);
			 }
			 result.set(i, t);
		 }
		 
		 out.println(result.cardinality());
		 for (int i = 1; i <= N; i++) {
			 if (result.get(i)) {
				 sb.append(i).append("\n");
			 }
		 }
		 out.println(sb);
		 
		 sc.close();
		 out.flush();
		 

	}

}


Compiler output:
Main.java:7: error: class D0720 is public, should be declared in a file named D0720.java
public class D0720 {
       ^
1 error
Language: Java

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] a = new int[n];
        for (int i = 0 ; i < n ; i++) {
            a[i] = sc.nextInt();
        }

        int[] b = new int[n];
        for (int i = n - 1 ; i >= 0 ; i--) {
            int m = i + 1;
            int count = 0;
            for (int j = m - 1 ; j < n ; j += m) {
                if (b[j] == 1) {
                    count++;
                }
            }
            if (count % 2 != a[i]) {
                b[i] = 1;
            }
        }

        int c = 0;
        for (int i = 0 ; i < n ; i++) {
            if (b[i] == 1) c++;
        }

        System.out.println(c);

        for (int i = 0 ; i < n ; i++) {
            if (b[i] == 1) {
                System.out.print(i + 1);
                System.out.print(" ");
            }
        }

        System.out.print("\n");

    }

}


Compiler output:
Main.java:4: error: cannot find symbol
        Scanner sc = new Scanner(System.in);
        ^
  symbol:   class Scanner
  location: class Main
Main.java:4: error: cannot find symbol
        Scanner sc = new Scanner(System.in);
                         ^
  symbol:   class Scanner
  location: class Main
2 errors
Language: C++

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

int main(){
  int N;
  N = read();
  vector<int> A(N);
  for (int i=0; i<N; i++){
    A[i] = read();
  }
  vector<int> Box(N);
  for (int i=0; i<N; i++){
    Box[i] = 0;
  }
  int cnt = 0;
  for (int i=N-1; i>=0; i--){
    int j=i;
    int sum = 0;
    while(j < N){
      sum += Box[j];
      j += i;
    }
    if ((A[i] % 2) != (sum % 2)){
      Box[i] = 1;
      cnt++;
    }
  }
  printf("%d\n",cnt);
  for (int i=0; i<N; i++){
    if (Box[i] == 1){
      printf("%d ", i);
    }
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:11: error: too few arguments to function 'ssize_t read(int, void*, size_t)'
    6 |   N = read();
      |       ~~~~^~
In file included from /usr/include/x86_64-linux-gnu/bits/sigstksz.h:24,
                 from /usr/include/signal.h:328,
                 from /usr/include/c++/14/csignal:42,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:116,
                 from a.cc:1:
/usr/include/unistd.h:371:16: note: declared here
  371 | extern ssize_t read (int __fd, void *__buf, size_t __nbytes) __wur
      |                ^~~~
a.cc:9:16: error: too few arguments to function 'ssize_t read(int, void*, size_t)'
    9 |     A[i] = read();
      |            ~~~~^~
/usr/include/unistd.h:371:16: note: declared here
  371 | extern ssize_t read (int __fd, void *__buf, size_t __nbytes) __wur
      |                ^~~~
Language: C++

#include <bits/stdc++.h>
#define int int64_t
using namespace std;
typedef pair<int, int> P;
const int INF = 100000000;

// グローバル変数


// 関数：


signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	
	int N; cin >> N;
	vector<int> a(N+1), b(N+1);
	for (int i=1; i<=N; i++) {
		cin >> a.at(i);
	}
	
	for (int i=N; i>0; i--) {
		#include <bits/stdc++.h>
#define int int64_t
using namespace std;
typedef pair<int, int> P;
const int INF = 100000000;

// グローバル変数


// 関数：


signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	
	int N; cin >> N;
	vector<int> a(N+1), b(N+1);
	for (int i=1; i<=N; i++) {
		cin >> a.at(i);
		b.at(i) = a.at(i);
	}
	
	for (int i=N; i>0; i--) {
		int sum = 0;
		for (int j=i+i; j<=N; j=j+i) {
			sum += a.at(j);
			sum = sum % 2;
		}
		b.at(i) = sum + a.at(i);
		b.at(i) = b.at(i) % 2;
	}
	
	vector<int> ans;
	for (int i=1; i<=N; i++ ) {
		if ( a.at(i) != b.at(i) ) {
			ans.push_back(i);
		}
	}
	cout << ans.size() << endl;
	for (int i=0; i<ans.size(); i++) {
		cout << ans.at(i);
		if (i==ans.size()-1) cout << endl;
		else cout << ' ';
	}
}


Compiler output:
a.cc: In function 'int main()':
a.cc:36:12: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
   36 | signed main() {
      |            ^~
a.cc:36:12: note: remove parentheses to default-initialize a variable
   36 | signed main() {
      |            ^~
      |            --
a.cc:36:12: note: or replace parentheses with braces to value-initialize a variable
a.cc:36:15: error: a function-definition is not allowed here before '{' token
   36 | signed main() {
      |               ^
a.cc:69:2: error: expected '}' at end of input
   69 | }
      |  ^
a.cc:23:33: note: to match this '{'
   23 |         for (int i=N; i>0; i--) {
      |                                 ^
a.cc:69:2: error: expected '}' at end of input
   69 | }
      |  ^
a.cc:13:15: note: to match this '{'
   13 | signed main() {
      |               ^
Language: C++

#include <bits/stdc++.h>
#define int int64_t
using namespace std;
typedef pair<int, int> P;
const int INF = 100000000;

// グローバル変数


// 関数：


signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	
	int N; cin >> N;
	vector<int> a(N+1), b(N+1);
	for (int i=1; i<=N; i++) {
		cin >> a.at(i);
	}
	
	for (int i=N; i>0; i--) {
		#include <bits/stdc++.h>
#define int int64_t
using namespace std;
typedef pair<int, int> P;
const int INF = 100000000;

// グローバル変数


// 関数：


signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	
	int N; cin >> N;
	vector<int> a(N+1), b(N+1);
	for (int i=1; i<=N; i++) {
		cin >> a.at(i);
		b.at(i) = a.at(i);
	}
	
	for (int i=N; i>0; i--) {
		int sum = 0;
		for (int j=i+i; j<=N; j=j+i) {
			sum += a.at(j);
			sum = sum % 2;
		}
		b.at(i) = sum + a.at(i);
		b.at(i) = b.at(i) % 2;
	}
	
	vector<int> ans;
	for (int i=1; i<=N; i++ ) {
		if ( a.at(i) != b.at(i) ) {
			ans.push_back(i);
		}
	}
	cout << ans.size() << endl;
	for (int i=0; i<ans.size(); i++) {
		cout << ans.at(i);
		if (i==ans.size()-1) cout << endl;
		else cout << ' ';
	}
}
for (int j=i+i; j<=N; j=j+i) {
			sum += a.at(j);
			sum = sum % 2;
		}
		b.at(i) = sum;
	}
	
	vector<int> ans;
	for (int i=1; i<=N; i++ ) {
		if ( a.at(i) != b.at(i) ) {
			ans.push_back(i);
		}
	}
	cout << ans.size() << endl;
	for (int i=0; i<ans.size(); i++) {
		cout << ans.at(i);
		if (i==ans.size()-1) cout << endl;
		else cout << ' ';
	}
}


Compiler output:
a.cc: In function 'int main()':
a.cc:36:12: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
   36 | signed main() {
      |            ^~
a.cc:36:12: note: remove parentheses to default-initialize a variable
   36 | signed main() {
      |            ^~
      |            --
a.cc:36:12: note: or replace parentheses with braces to value-initialize a variable
a.cc:36:15: error: a function-definition is not allowed here before '{' token
   36 | signed main() {
      |               ^
a.cc:71:25: error: 'sum' was not declared in this scope
   71 |                         sum += a.at(j);
      |                         ^~~
a.cc:74:27: error: 'sum' was not declared in this scope
   74 |                 b.at(i) = sum;
      |                           ^~~