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

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		long n = sc.nextInt();
		int[] a = new int[n];
		int[] b = new int[100001];
		for(int i = 0 ; i < n ; i++) a[i] = sc.nextInt();
		long ans = 1;
		for(int i = 0 ; i < n ; i++) b[a[i]]++;
		if(n % 2 == 0) {
			boolean ok = true;
			for(int j = 0 ; j * j < n ; j++) {
				if(b[j + 1] != 2) ok = false;
			}
			if(ok) {
				ans = 1L<<(n / 2) % 1000000007;
			} else {
				System.out.println(0);
				return;
			}
		} else {
			boolean ok = true;
			for(int j = 0 ; j * j < n ; j++) {
				if(j == 0 && b[j] != 1) ok = false;
				else if(b[j * 2] != 2) ok = false;
			}
			if(ok) {
				ans = 1L<<(n / 2) % 1000000007;
			} else {
				System.out.println(0);
				return;
			}
		}
		System.out.println(ans);
	}
}


Compiler output:
Main.java:7: error: incompatible types: possible lossy conversion from long to int
		int[] a = new int[n];
		                  ^
1 error
Language: C++

#include <iostream>
#include <math.h>
#include <algorithm>
using namespace std;

int main()
{
    int n;
    cin >> n;
    int a[n];
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    sort (a, a + n);
    int ans1 = 0;
    if (n % 2 == 1) {
        int ans = 0;
        for (int i = 0; i < n; i++) {
            if (a[i] == 0) {
                ans++;
            }
            if (a[i] % 2 == 1) {
                cout << 0;
                return 0;
            }
        }
        if (ans != 1) {
            cout << 0;
            return 0;
        }
        for (int i = 1; i < n - 1; i += 2) {
            if (a[i] == a[i + 1]) {
                ans1 ++;
            }
            if (a[i] > 1) {
                if (a[i] == a[i - 2]) {
                    cout << 0;
                    return 0;
                }
            }
        }
        if (ans1 == n / 2) {
            cout << pow(2, n / 2)% (pow(10,9) + 7);
            return 0;
        }
    }
    else {
        for (int i = 0; i < n; i++) {
            if (a[i] % 2 == 0) {
                cout << 0;
                return 0;
            }
        }
        for (int i = 0; i < n - 1; i += 2) {
            if (a[i] == a[i + 1]) {
                ans1++;
            }
            if (a[i] > 1) {
                if (a[i] == a[i - 2]) {
                    cout << 0;
                    return 0;
                }
            }
        }
        if (ans1 == n / 2) {
            cout << pow(2, n / 2) % (pow(10,9) + 7);
            return 0;
        }
    }
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:43:34: error: invalid operands of types '__gnu_cxx::__promote<double>::__type' {aka 'double'} and '__gnu_cxx::__promote<double>::__type' {aka 'double'} to binary 'operator%'
   43 |             cout << pow(2, n / 2)% (pow(10,9) + 7);
      |                     ~~~~~~~~~~~~~^ ~~~~~~~~~~~~~~~
      |                        |                      |
      |                        |                      __gnu_cxx::__promote<double>::__type {aka double}
      |                        __gnu_cxx::__promote<double>::__type {aka double}
a.cc:66:35: error: invalid operands of types '__gnu_cxx::__promote<double>::__type' {aka 'double'} and '__gnu_cxx::__promote<double>::__type' {aka 'double'} to binary 'operator%'
   66 |             cout << pow(2, n / 2) % (pow(10,9) + 7);
      |                     ~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~
      |                        |                       |
      |                        |                       __gnu_cxx::__promote<double>::__type {aka double}
      |                        __gnu_cxx::__promote<double>::__type {aka double}
Language: C++

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

#define DEBUG(x) cerr << #x << ": " << x << endl;
#define MAX 1000000007;

int main() {
    int n;
    cin >> n;
    vector<int> A;
    for (int i = 0; i < n; i++) {
        int x;
        cin >> x;
        A.push_back(x);
    }

    vector<int> B;
    // 要素数が偶数の時
    if (n % 2 == 0) { 
        int nHalf = n / 2;
        int tmpN = n - 1;
        // 配列の前半埋める
        for (int i = 0; i < nHalf; i++) {
            B.push_back(tmpN);
            tmpN -= 2;
        }
        // 配列の後半埋める
        tmpN = 1;
        for (int i = 0; i < nHalf; i++) {
            B.push_back(tmpN);
            tmpN += 2;
        }
    } else { // 要素数が奇数
        int nHalf = n / 2;
        int tmpN = n - 1;
        // 配列の前半埋める
        for (int i = 0; i < nHalf; i++) {
            B.push_back(tmpN);
            tmpN -= 2;
        }
            B.push_back(0);
        // 配列の後半埋める
        tmpN = 2;
        for (int i = 0; i < nHalf; i++) {
            B.push_back(tmpN);
            tmpN += 2;
        }

    }

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

    for (int i = 0; i < n; i++) {
        if (A[i] != B[i]) {
            cout << "0" << endl;
            return 0; // 一致しないならここで終了
        }
    }

    int nHalf = n / 2;
    int ans = 1;
    for (int i = 0; i < nHalf; i++) {
        ans *= 2;
    }
    cout << ans % MAX << endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:66:23: error: expected primary-expression before '<<' token
   66 |     cout << ans % MAX << endl;
      |                       ^~
Language: C++

#include <bits\stdc++.h>
using namespace std;
int n,cnt[1000005],i,x;
long long ans;
int main()
{
	cin>>n;
	for (i=1;i<=n;i++)
	{
		cin>>x;
		cnt[x]++;
	}
	if (n&1)
	{
		for (i=2;i<=n;i+=2)
		{
			if (cnt[i]!=2)
			{
				cout<<0;
				return 0;
			}
		}
		if (cnt[0]!=1)
		{
			cout<<0;
			return 0;
		}
	}
	else
	{
		for (i=1;i<=n;i+=2)
		{
			if (cnt[i]!=2)
			{
				cout<<0;
				return 0;
			}
		}
	}
	ans=1;
	for (i=1;i<=n/2;i++) (ans*=2)%=((long long)1e9+7);
	cout<<ans;
	return 0;
}

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

#include<iostream>
using namespace std;
#include<vector>
#include<set>

int main(){
	int n;
	cin>>n;
	vector<int> a(n);
	vector<int> ans(n,0);
	long long int ansr=1;
	for(int i = 0;i<n;i++){
		cin>>a[i];
		ans[a[i]]++;
	}
	if(n%2==1)ans[0]++;
	for(int i = 1-n%2;i<n;i+=2){
		if(ans[i]!=2){
			cout<<0<<endl;
			return 0;
		}
		if(i!=0)ansr*=2;
		ansr%=1000000007
	}
	cout<<ansr<<endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:33: error: expected ';' before '}' token
   23 |                 ansr%=1000000007
      |                                 ^
      |                                 ;
   24 |         }
      |         ~
Language: C++

#include <cstdio>
#include <iostream>
#include <cstdlib>
#include <algorithm>
#include <vector>
#include <cstring>
#include <queue>
#include <stack>
#include <functional>
#include <set>
#include <map>
#include <deque>
#define NMAX 100005
#define MMAX 103
 
//コメントアウトするとdebug()を実行しない
#define DEBUG
 
using namespace std;
template<typename A, size_t N, typename T>
void Fill(A (&array)[N], const T &val){
    std::fill( (T*)array, (T*)(array+N), val );
}
 
int N,A[NMAX],ans = 1;;
char C;
string S;
vector<int> T;
static const int dx[8] = {0,1,1,1,0,-1,-1,-1},
					dy[8] = {1,1,0,-1,-1,-1,0,1};
 
int solve(){
	for (int i = 0; i < N; ++i)
	{
		T.push_back();
	}
	sort(T.begin(), T.end(), greater<int>() );
	if(!T[0]){
		int j = 2;
		for (int i = 1; i < T.size(); ++i)
		{
			if(T[i] != j){
				ans = 0;
				return 0;
			}
			if(!i%2){
				j += 2;
			}
		}
	}else{
		int j = 1;
		for (int i = 0; i < T.size(); ++i)
		{
			if(T[i] != j){
				ans = 0;
				return 0;
			}
			if(i%2){
				j += 2;
			}
		}
	}
	for (int i = 0; i < N/2; ++i)
	{
		ans *= 2;
	}
	return 0;
}

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

Compiler output:
a.cc: In function 'int solve()':
a.cc:35:28: error: no matching function for call to 'std::vector<int>::push_back()'
   35 |                 T.push_back();
      |                 ~~~~~~~~~~~^~
In file included from /usr/include/c++/14/vector:66,
                 from a.cc:5:
/usr/include/c++/14/bits/stl_vector.h:1283:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = int; _Alloc = std::allocator<int>; value_type = int]'
 1283 |       push_back(const value_type& __x)
      |       ^~~~~~~~~
/usr/include/c++/14/bits/stl_vector.h:1283:7: note:   candidate expects 1 argument, 0 provided
/usr/include/c++/14/bits/stl_vector.h:1300:7: note: candidate: 'void std::vector<_Tp, _Alloc>::push_back(value_type&&) [with _Tp = int; _Alloc = std::allocator<int>; value_type = int]'
 1300 |       push_back(value_type&& __x)
      |       ^~~~~~~~~
/usr/include/c++/14/bits/stl_vector.h:1300:7: note:   candidate expects 1 argument, 0 provided
Language: C++

#include <cstdio>
#include <iostream>
#include <cstdlib>
#include <algorithm>
#include <vector>
#include <cstring>
#include <queue>
#include <stack>
#include <functional>
#include <set>
#include <map>
#include <deque>
#define NMAX 103
#define MMAX 103

//コメントアウトするとdebug()を実行しない
#define DEBUG

using namespace std;
template<typename A, size_t N, typename T>
void Fill(A (&array)[N], const T &val){
    std::fill( (T*)array, (T*)(array+N), val );
}

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

int N,A[NMAX],ans = 1;
int C;
string S;
static const int dx[8] = {0,1,1,1,0,-1,-1,-1},
					dy[8] = {1,1,0,-1,-1,-1,0,1};

int solve(){
	if(N%2){
		for (int i = 0; i < N; ++i)
		{
			if(A[i]%2){
				ans = 0;
				return 0;
			}
		}
		for (int i = 0; i < N/2+1; ++i)
		{
			ans *= 2;
		}
	}else{
		for (int i = 0; i < N; ++i)
		{
			if(!A[i]%2){
				ans = 0;
				return 0;
			}
		}
		for (int i = 0; i < N/2; ++i)
		{
			ans *= 2;
		}
	}
	return 0;
}

void debug(){

}

void answer(){
	cout << ans << "\n";
}

int main(){
	cin >> N;
	for (int i = 0; i < N; ++i)
	{
		cin >> A[i];
	}
	c = solve();
	answer();
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:77:9: error: 'c' was not declared in this scope
   77 |         c = solve();
      |         ^
Language: C++

#include <algorithm>
#include <cstdio>
#include <iostream>
#include <map>
#include <cmath>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <vector>
#include <stdlib.h>
#include <stdio.h>
using namespace std;

#define ll         long long
#define PI         acos(-1.0)
#define FOR(I,A,B) for(int I = (A); I < (B); ++I)

//差の絶対値が同じ人は二人(0を除く)
//Nが奇数の時:差は0~N-1,0の人は真ん中のみ
//Nが偶数の時:差は1~N-1
//iさんは2通り

ll MOD = pow(10, 9) + 1;

int main(void){
    int N;
    cin >> N;
    int d[N];
    ll ans = 1;
    FOR(i, 0, N) d[i] = 0;
    FOR(i, 0, N){
        int n;cin>>n;
        d[n]++;
    }
    if(N%2==0 && d[0]!=0)){
        cout<<0<<endl;
        return 0;
    }
    if(N%2==1 && d[0]!=1){
        cout<<0<<endl;
        return 0;
    }
    FOR(i, 0, N){
        if(d[i]>2){
            cout<<0<<endl;
            return 0;
        }
    }
    FOR(i, 0, N/2){
        ans *= 2;
        ans %= MOD;
    }
    cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:37:26: error: expected primary-expression before ')' token
   37 |     if(N%2==0 && d[0]!=0)){
      |                          ^
Language: C++

import java.util.*;

// ABC 50-C
// http://abc050.contest.atcoder.jp/tasks/arc066_a

public class Main {
	
	static int n;
	static int max;
	static int answer = 0;
	static int MOD = 1000000007;

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		
		n = in.nextInt();
		int[] diff = new int[n + 1];
		for (int i = 1; i <= n; i++) {
			diff[i] = in.nextInt();
		}
		
		int[] used = new int[n + 1];
		int[] order = new int[n];
		
		solve(0, diff, used, order);
		System.out.println(answer);
	}
	
	public static void solve(int index, int[] diff, int[] used, int[] order) {
		if (index == n) {
			answer++;
			if (answer == MOD) {
				answer = 0;
			}
//			System.out.printf("order: ");
//			for (int i = 0; i < n; i++) {
//				System.out.printf("%d ", order[i]);
//			}
//			System.out.println();
			return;
		}
		int left = index;
		int right = n - index - 1;
		int d = Math.abs(left - right);
		
		for (int i = 1; i <= n; i++) {
			if (diff[i] == d && used[i] == 0) {
				order[index] = i;
				used[i] = 1;
				solve(index + 1, diff, used, order);
				used[i] = 0;
			}
		}
	}
}

Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.util.*;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:6:1: error: expected unqualified-id before 'public'
    6 | public class Main {
      | ^~~~~~
Language: C++

#include"sort.h"
#include<stdio.h>
#include<iostream>
using namespace std;

int power(int n){
	if(n == 0){
		return 1;
	}
	if(n % 2 == 1){
		return (2 * power(n - 1)) % 1000000007;
	}else{
		return power(n / 2) * power(n / 2) % 1000000007;
	}
}

int main(){
	int n;
	bool flag = true;
	
	cin >> n;
	
	int a[n];
	
	for(int i = 0; i < n; ++i){
		cin >> a[i];
	}

	quick_sort(a, n);

	if(n % 2 == 1){
		if(a[0] != 0){
			cout << 0 << "\n";
		}else{
			for(int i = 1; i < n - 1; i += 2){
				if(a[i] != i + 1 || a[i + 1] != i + 1){
					cout << 0 << "\n";
					flag = false;
					break;
				}
			}
			if(flag == true){
				cout << power((n - 1) / 2) << "\n";	
			}
		}
	}else{
		for(int i = 0; i < n - 1; i += 2){
			if(a[i] != i + 1 || a[i + 1] != i + 1){
				cout << 0 << "\n";
				flag = false;
				break;
			}
		}
		if(flag == true){
			cout << power(n / 2) << "\n";
		}
	}

	return 0;
}	

Compiler output:
a.cc:1:9: fatal error: sort.h: No such file or directory
    1 | #include"sort.h"
      |         ^~~~~~~~
compilation terminated.
Language: C++

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

using ll=long long;
#define int ll

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

int read(){
	int i;
	scanf("%lld",&i);
	return i;
}

signed main(){
	// your code goes here
	int N=read();
	vector<int> A;
	REP(i,N) A.push_back(read());
	sort(A.begin(),A.end());
	for(int i=1;i<N;i+=2){
		REP(j,2){
			if(A.back()!=N-i){
				cout << 0;
				return 0;
			}
			A.pop_back();
		}
	}
	if(N%2!=0&&A.back()!=0){
		cout << 0;
		return 0;
	}
	
	cout << pow(2,N/2)%(100000000+7);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:36:27: error: invalid operands of types '__gnu_cxx::__promote<double>::__type' {aka 'double'} and 'int' to binary 'operator%'
   36 |         cout << pow(2,N/2)%(100000000+7);
      |                 ~~~~~~~~~~^~~~~~~~~~~~~~
      |                    |                 |
      |                    |                 int
      |                    __gnu_cxx::__promote<double>::__type {aka double}
Language: C++

#include <bits/stdc++.h>
#define REP(i, n) for(int i = 0;i < n;i++) // ex)REP(i,10) i=0~i=9
#define REPR(i, n) for(int i = n;i >= 0;i--) // ex)REPR(i,10) i=10~i=0
#define FOR(i, m, n) for(int i = m;i < n;i++) //ex)FOR(i,3,10) i=3~i=9
#define FORR(i, m, n) for(int i = m;i >= n;i--) 
#define SORT(v, n) sort(v, v+n);
#define VSORT(v) sort(v.begin(), v.end()); //
#define llong long long //64bitに拡張
#define pb(a) push_back(a)　
#define INF 999999999 //大きな値
using namespace std;
typedef pair<int, int> P;
typedef pair<llong, llong> LP;
typedef pair<int, P> PP;
typedef pair<llong, LP> LPP;
//座標上を探索
int dy[]={0, 0, 1, -1, 0};
int dx[]={1, -1, 0, 0, 0};

int main(){
	llong N;
	llong A[100000];
	int count[100000] = ;
	bool judge = true;
	llong answer = 1;
	cin >> N;
	for(int i=0;i<N;i++){ 
		count[i] = 0;
	}
	for(int i=0;i<N;i++){ 
		cin >> A[i];
		count[A[i]]++;
	}
	if(N%2 == 0){ 
		if(count[0] > 0){ 
			judge = false;
		}
		for(int i=1;i<N;i=i+2){ 
			if(count[i] != 2){ 
				judge = false;
			}
		}
		if(judge == true){
			for(int l=0;l<N/2;l++){
			answer = answer * 2;
		}
		answer = answer % 1000000007;
		cout << answer << endl;
		}else{ 
			cout << 0 << endl;
		} 
	}else{
		if(count[0] != 1){ 
			judge = false;
		}
		for(int i=2;i<N;i = i + 2){ 
		     if(count[i] != 2){ 
			    judge = false;
		     }
	    }
	
	if(judge == true){
		for(int l=0;l<(N-1)/2;l++){
			answer = answer * 2;
		}
		answer = answer % 1000000007;
		cout << answer << endl;
		}else{ 
			cout << 0 << endl;
		}
	}
}



Compiler output:
a.cc:9:27: error: extended character 　 is not valid in an identifier
    9 | #define pb(a) push_back(a)　
      |                           ^
a.cc: In function 'int main()':
a.cc:23:29: error: expected primary-expression before ';' token
   23 |         int count[100000] = ;
      |                             ^
Language: C++

#define _USE_MATH_DEFINES
#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<string>
#include<iostream>
#include<cctype>
#include<cstdio>
#include<vector>
#include<stack>
#include<queue>
#include <algorithm>
#include<math.h>
#include<set>
#include<map>
#include<iomanip>

//#include<bits/stdc++.h>


using namespace std;


int main() {

	int n;
	int y[100005] = {};

	cin >> n;
	bool f = 0;
	for (int i = 0; i < n; i++) {
		int x;
		cin >> x;
		if (n == 1) {
			if (!x )cout << 1 << endl;
			else cout << 0 << endl;
			return 0;
		}
		if (x >= n)f = 1;
		if (n % 2) {
			if (!x)y[x]++;
			else if (x % 2) {
				
					f = 1;					
				

			}
		
			else y[x]++;
			
			
		}
		else {
			if (x % 2==0 ) {
				if (x) {
					f = 1;
				}
			

			}
			else y[x]++;


		}


	}
	for (int i = 0; i <= 100000; i++) {
		if (n % 2) {
			if (i&&y[i]&&i%2)f = 1;
			if (y[0] != 1)f = 1;
			if (y[i] != 2 && i % 2 == 0&&i<=n-1&&i)f = 1;
		
		}
		else {
			if (y[i] && i % 2==0)f = 1;
			//if (y[0] != 1)f = 1;
			if (y[i] != 2 && i % 2&&i<n )f = 1;
		}
	}
	
	if (f) {
		cout << 0 << endl;
		return 0;
	}
	cout << pow(2, (double)(n / 2))%1000000007 << endl;
	return 0;

}




Compiler output:
a.cc: In function 'int main()':
a.cc:85:40: error: invalid operands of types '__gnu_cxx::__promote<double>::__type' {aka 'double'} and 'int' to binary 'operator%'
   85 |         cout << pow(2, (double)(n / 2))%1000000007 << endl;
      |                 ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
      |                    |                    |
      |                    |                    int
      |                    __gnu_cxx::__promote<double>::__type {aka double}
Language: C

#include<stdio.h>
#include<string.h>
int main(void)
{
	int kazu, number[100000], flag = 0, count[100000] = { 0 }, i, n, t;
	const int MOD = 1e9 + 7;
	scanf("%d", &kazu);
	for (i = 0; i < kazu; i++)
	{
		scanf("%d", &number[i]);
		count[number[i]]++;
	}

	for (i = 0; i < kazu; i++)
	{
		/*if (kazu % 2 == 0)
		{
			if (i % 2 == 0 && count[i] != 0)flag = 1;
			if (count[0] != 0)flag = 1;
			if (count[i] != 0 && count[i] != 2)flag = 1;//奇数の場合を除く

		}*/
		if (kazu % 2 == 1)
		{
			if (i % 2 == 1 && count[i] != 0)flag = 1;
			if (count[0] != 1)flag = 1;
			if (count[i] != 0) //偶数の場合を除く
				if (i != 0 && count[i] != 2)flag = 1;
		}
	}
	kazu = kazu / 2;
	kazu *= kazu;
	if (flag == 1)
		printf("0");
	else
		printf("%d", kazu%MOD);
retrun 0;
}

Compiler output:
main.c: In function 'main':
main.c:37:1: error: 'retrun' undeclared (first use in this function)
   37 | retrun 0;
      | ^~~~~~
main.c:37:1: note: each undeclared identifier is reported only once for each function it appears in
main.c:37:7: error: expected ';' before numeric constant
   37 | retrun 0;
      |       ^~
      |       ;
Language: C

#include<stdio.h>
#include<string.h>
int main(void)
{
	int kazu, number[100000], flag = 0, count[100000] = { 0 }, i, n, t;
	const int MOD = 1e9 + 7;
	scanf("%d", &kazu);
	for (i = 0; i < kazu; i++)
	{
		scanf("%d", &number[i]);
		count[number[i]]++;
	}

	for (i = 0; i < kazu; i++)
	{
		if (kazu % 2 == 0)
		{
			if (i % 2 == 0 && count[i] != 0)flag = 1;
			if (count[0] != 0)flag = 1;
			if (count[i] != 0 && count[i] != 2)flag = 1;//奇数の場合を除く

		}
		/*if (kazu % 2 == 1)
		{
			if (i % 2 == 1 && count[i] != 0)flag = 1;
			if (count[0] != 1)flag = 1;
			if (count[i] != 0) //偶数の場合を除く
				if (i != 0 && count[i] != 2)flag = 1;
		}*/
	}
	kazu = kazu / 2;
	kazu *= kazu;
	if (flag == 1)
		printf("0");
	else
		printf("%d", kazu%MOD);
retrun 0;
}

Compiler output:
main.c: In function 'main':
main.c:37:1: error: 'retrun' undeclared (first use in this function)
   37 | retrun 0;
      | ^~~~~~
main.c:37:1: note: each undeclared identifier is reported only once for each function it appears in
main.c:37:7: error: expected ';' before numeric constant
   37 | retrun 0;
      |       ^~
      |       ;
Language: C

#include<stdio.h>
#include<string.h>
int main(void)
{
	int kazu, number[100000],flag=0, count[100000] = { 0 }, i, n, t;
	const int MOD = 1e9 + 7;
	scanf("%d", &kazu);
	for (i = 0; i < kazu; i++)
	{
		scanf("%d", &number[i]);
		count[number[i]]++;
	}

	for (i = 0; i < kazu; i++)
	{
		if (kazu % 2 == 0)
		{
			if (i % 2 == 0 && count[i] != 0)flag = 1;
			if (count[0] != 0)flag = 1;
			if (count[i] != 0 && count[i] != 2)flag = 1;//奇数の場合を除く

		}
		if (kazu%2==1)
		{
			if (i % 2 == 1 && count[i] != 0)flag = 1;
			if (count[0] != 1)flag = 1;
			if (count[i]!=0) //偶数の場合を除く
			if (i != 0 && count[i] != 2)flag = 1;
		}
	}
	kazu = kazu / 2;
	kazu *= kazu;
	if (flag == 1)
		printf("0");
	else
		printf("%d", kazu%MOD);
	return0;
}


Compiler output:
main.c: In function 'main':
main.c:37:9: error: 'return0' undeclared (first use in this function)
   37 |         return0;
      |         ^~~~~~~
main.c:37:9: note: each undeclared identifier is reported only once for each function it appears in
Language: Java

package pac01;

import java.util.Arrays;
import java.util.Scanner;

public class LiningUp {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);

		//人数
		int N = sc.nextInt();
		int[] A = new int[N];
		//絶対値の入力
		int[] a = new int[N];
        double P;
		for(int i = 0; i < N ;i++){

			a[i] = sc.nextInt();
			A[i] = Math.abs((2 * i) - N + 1);
		}
		Arrays.sort(A);
		Arrays.sort(a);
		if(Arrays.equals(A,a)){
			 P = Math.floor(N/2)  *  Math.floor(N/2);

		}else{
			 P = 0;
		}
		System.out.println(P / (Math.pow(10, 9) + 7));
	}

}

Compiler output:
Main.java:6: error: class LiningUp is public, should be declared in a file named LiningUp.java
public class LiningUp {
       ^
1 error
Language: Java

package pac01;

import java.util.Arrays;
import java.util.Scanner;

public class LiningUp {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		System.out.print(" ");
		Scanner sc = new Scanner(System.in);

		//人数
		int N = sc.nextInt();
		int[] A = new int[N];
		//絶対値の入力
		int[] a = new int[N];
        double P;
		for(int i = 0; i < N ;i++){

			a[i] = sc.nextInt();
			A[i] = Math.abs((2 * i) - N + 1);
		}
		Arrays.sort(A);
		Arrays.sort(a);
		System.out.println(Arrays.toString(A));
		System.out.println(Arrays.toString(a));
		if(Arrays.equals(A,a)){
			 P = Math.floor(N/2)  *  Math.floor(N/2);
			 
		}else{
			 P = 0;
		}
		System.out.println(P / (Math.pow(10, 9) + 7));
	}

}

Compiler output:
Main.java:6: error: class LiningUp is public, should be declared in a file named LiningUp.java
public class LiningUp {
       ^
1 error
Language: C++

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

int main(){
	int N;
	cin>>N;
	vector<int> v;
	for(int i=0;i<N;i++){
		int tmp;
		cin>>tmp;
		v.push_back(tmp);
	}
	v.sort();
	bool bl=true;
	if(N%2==0){
		for(int i=1;i<N;i+=2){
			if(v[i] != i){
				bl=false;
				break;
			}
		}
	}else{
		for(int i=0;i<N;i+=2){
			if(v[i] != i){
				bl=false;
				break;
			}
		}
	}
	if(N%2==0 && bl){
		cout<<( (int)(pow(2.0,(N/2)))%1000000007 )<<endl;
	}else if(bl){
		cout<<( (int)(pow(2.0,((N-1)/2)))%1000000007 )<<endl;
	}else{
		cout<<0<<endl;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:11: error: 'class std::vector<int>' has no member named 'sort'
   16 |         v.sort();
      |           ^~~~
Language: C++

#include<iostream>
using namespace std;

int main(){
	int N;
	cin>>N;
	if(N%2==0){
		cout<<(2^(N/2))/(10^9 + 7)<<endl;
	}else{
		cout<<(2^((N-1)/2)/(10^9 + 7)<<endl;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:46: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
   10 |                 cout<<(2^((N-1)/2)/(10^9 + 7)<<endl;
      |                          ~~~~~~~~~~~~~~~~~~~~^~~~~~
a.cc:10:52: error: expected ')' before ';' token
   10 |                 cout<<(2^((N-1)/2)/(10^9 + 7)<<endl;
      |                       ~                            ^
      |                                                    )
Language: C++

long M=1e9+7,s[1<<17],a,i,f;
long p(long a,int b){return b?b%2?p(a*a%M,b/2)*a%M:p(a*a%M,b/2)%M:1;}
main(n)
{
	for(scanf("%d",&n);~scanf("%d",&a);s[a]++);
	if(n%2)for(f|=*s-1;++i<n;)f|=(i%2?s[i]:s[i]-2)?1:0;
	else for(f|=*s;++i<n;)f|=(i%2?s[i]-2:s[i])?1:0;
	printf("%d\n",f?0:p(2,n/2));
}


Compiler output:
a.cc:3:5: error: expected constructor, destructor, or type conversion before '(' token
    3 | main(n)
      |     ^
Language: C++

using namespace std;
int main() {
	int n;
	cin >> n;
	int *a = new int[n];
	for (int i = 0; i < n; i++)cin >> a[i];
	//解の存在確認
	int *ax = new int[(n + n % 2) / 2];
	for (int i = 0; i < (n + n % 2) / 2; i++) ax[i] = 0;
	bool check = true;
	if (n % 2) {
		ax[0] = 1;
		for (int i = 0; i < n; i++) ax[a[i] / 2]++;
		for (int i = 0; i < (n + n % 2) / 2; i++) {
			if (ax[i] != 2) {
				check = false;
				break;
			}
		}
	}
	else {
		for (int i = 0; i < n; i++) ax[(a[i] - 1) / 2]++;
		for (int i = 0; i < (n + n % 2) / 2; i++) {
			if (ax[i] != 2) {
				check = false;
				break;
			}
		}
	}
	if (check) {
		int iter = (n - n % 2) / 2;
		int s = 1;
		for (int i = 0; i < iter; i++) {
			s = s % 1000000007;
			s *= 2;
		}
		cout << s << endl;
	}
	else cout << 0 << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:9: error: 'cin' was not declared in this scope
    4 |         cin >> n;
      |         ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | using namespace std;
a.cc:37:17: error: 'cout' was not declared in this scope
   37 |                 cout << s << endl;
      |                 ^~~~
a.cc:37:17: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:37:30: error: 'endl' was not declared in this scope
   37 |                 cout << s << endl;
      |                              ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | using namespace std;
a.cc:39:14: error: 'cout' was not declared in this scope
   39 |         else cout << 0 << endl;
      |              ^~~~
a.cc:39:14: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:39:27: error: 'endl' was not declared in this scope
   39 |         else cout << 0 << endl;
      |                           ^~~~
a.cc:39:27: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
Language: C++

#include <iostream>
#include <cmath>

using namespace std;

int main(){
  int N = 0;
  long long result = 0.0, p1;
  cin >> N;

  p1 = (pow(10, 9) + 7);

  if(N % 2 == 0){
    N /= 2;
    result = pow(2 , N) % p1;
  }
  else {
    N = (N-1) / 2;
    result =  pow(2, N) % p1;
  }

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:25: error: invalid operands of types '__gnu_cxx::__promote<double>::__type' {aka 'double'} and 'long long int' to binary 'operator%'
   15 |     result = pow(2 , N) % p1;
      |              ~~~~~~~~~~ ^ ~~
      |                 |         |
      |                 |         long long int
      |                 __gnu_cxx::__promote<double>::__type {aka double}
a.cc:19:25: error: invalid operands of types '__gnu_cxx::__promote<double>::__type' {aka 'double'} and 'long long int' to binary 'operator%'
   19 |     result =  pow(2, N) % p1;
      |               ~~~~~~~~~ ^ ~~
      |                  |        |
      |                  |        long long int
      |                  __gnu_cxx::__promote<double>::__type {aka double}
Language: C++

#include <iostream>
#include <cmath>

using namespace std;

int main(){
  int N = 0;
  cin >> N;

  if(N % 2 == 0){
    N /= 2;
    cout << pow(2 , N) % (pow(10, 9) + 7);
  }
  else {
    N = (N-1) / 2;
    cout << pow(2, N) % (pow(10, 9) + 7);
  }

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:24: error: invalid operands of types '__gnu_cxx::__promote<double>::__type' {aka 'double'} and '__gnu_cxx::__promote<double>::__type' {aka 'double'} to binary 'operator%'
   12 |     cout << pow(2 , N) % (pow(10, 9) + 7);
      |             ~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~
      |                |                     |
      |                |                     __gnu_cxx::__promote<double>::__type {aka double}
      |                __gnu_cxx::__promote<double>::__type {aka double}
a.cc:16:23: error: invalid operands of types '__gnu_cxx::__promote<double>::__type' {aka 'double'} and '__gnu_cxx::__promote<double>::__type' {aka 'double'} to binary 'operator%'
   16 |     cout << pow(2, N) % (pow(10, 9) + 7);
      |             ~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~
      |                |                    |
      |                |                    __gnu_cxx::__promote<double>::__type {aka double}
      |                __gnu_cxx::__promote<double>::__type {aka double}
Language: C++

#include <iostream>
#include <cstdio>
#include <cmath>
#include <string>
#include <vector>
#include <set>
#include <map>
#include <algorithm>

using namespace std;

long long MOD = 1000000007;


int main() {

  int N, A[100005];
  cin>>N;
  for(int i=0; i<N; i++) cin>>A[i];

  /*
  int m[100005];
  fill(m, m+N, 0);

  for(int i=0; i<N; i++){
    m[(N-1)/2 - A[i]/2]++;
    if((N-1)/2 - A[i]/2 != (N-1)/2 + A[i]/2) m[(N-1)/2 + A[i]/2]++;
  }

  long long ans = 1;
  for(int i=0; i<=(N-1)/2; i++){
    if(m[i] == 0 || m[i]> 2 || (i == N/2 && m[i] >1)){
      cout<<0<<endl;
      return 0;
    }
    if(i == N/2) ans = ans;
    else ans = (ans % MOD) * 2 % MOD;
  }
  cout<<ans % MOD<<endl;
  */

  sort(A, A+N);

  int BE[100005], BO[100005], cnt;

  cnt = 0;
  for(int i=1; i<=N-1; i += 2){
    BE[cnt] = i;
    BE[cnt+1] = i;
    cnt+=2;
  }
  cnt = 1;
  BO[0] = 0;
  for(int i=2; i<=N-1; i += 2){
    BO[cnt] = i;
    BO[cnt+1] = i;
    cnt+=2;
  }

  /*
  cout<<"BO"<<" : ";
  for(int i=0; i<N; i++){
    cout<<BO[i]<<" ";
  }cout<<endl;
  cout<<"BE"<<" : ";
  for(int i=0; i<N; i++){
    cout<<BE[i]<<" ";
  }cout<<endl;
  cout<<" A"<<" : ";
  for(int i=0; i<N; i++){
    cout<<A[i]<<" ";
  }cout<<endl;
  */

  if(N % 2 == 0){
    for(int i = 0; i < N; i++){
      if(A[i] != BE[i]){
        cout<<"0"<<endl;
        return 0;
      }
    }
  }else{
    for(int i = 0; i < N; i++){
      if(A[i] != BO[i]){
        cout<<"0"<<endl;
        return 0;
      }
    }
  }

  cout<<pow(2,N/2) % MOD<<endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:91:20: error: invalid operands of types '__gnu_cxx::__promote<double>::__type' {aka 'double'} and 'long long int' to binary 'operator%'
   91 |   cout<<pow(2,N/2) % MOD<<endl;
      |         ~~~~~~~~~~ ^ ~~~
      |            |         |
      |            |         long long int
      |            __gnu_cxx::__promote<double>::__type {aka double}
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,temp;
	cin>>n;
	vector<int> x;
	for(int i=0;i!=n;++i){
		cin>>temp;
		x.push_back(temp);
	}
	bool test=true;
	if(n%2){
		if(count(x.begin(),x.end(),0)!=1)
			test=false;
		for(int i=2;i<n;i+=2){
			if(count(x.begin(),x.end(),i)!=2)
				test=false;
		}
	}
	else{
		for(int i=1;i<n;i+=2){
			if(count(x.begin(),x.end(),i)!=2)
				test=false;
		}
	}
	if(test){
		long long ret=1,a=2,e=n/2,mod=1E9+7;
		while(e>0){
			if(e&1)
				ret=(ret*a)%mod
			a=(a*a)%mod
			e>>=1;
		}
		cout<<ret<<endl;
	}
	else
		cout<<0<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:30:48: error: expected ';' before 'a'
   30 |                                 ret=(ret*a)%mod
      |                                                ^
      |                                                ;
   31 |                         a=(a*a)%mod
      |                         ~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,temp;
	cin>>n;
	vector<int> x;
	for(int i=0;i!=n;++i){
		cin>>temp;
		x.push_back(temp);
	}
	bool test=true;
	if(n%2){
		if(count(x.begin(),x.end(),0)!=1)
			test=false;
		for(int i=2;i<n;i+=2){
			if(count(x.begin(),x.end(),i)!=2)
				test=false;
		}
	}
	else{
		for(int i=1;i<n;i+=2){
			if(count(x.begin(),x.end(),i)!=2)
				test=false;
		}
	}
	if(test){
		long long ret=1,a=2,e=n/2,mod=1E9+7
		while(e>0){
			if(e&1)
				ret=(ret*a)%mod
			a=(a*a)%mod
			e>>=1;
		}
		cout<<ret<<endl;
	}
	else
		cout<<0<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:28:17: error: expected ',' or ';' before 'while'
   28 |                 while(e>0){
      |                 ^~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,temp;
	cin>>n;
	vector<int> x;
	for(int i=0;i!=n;++i){
		cin>>temp;
		x.push_back(temp);
	}
	bool test=true;
	if(n%2){
		if(count(x.begin(),x.end(),0)!=1)
			test=false;
		for(int i=2;i<n;i+=2){
			if(count(x.begin(),x.end(),i)!=2)
				test=false;
		}
	}
	else{
		for(int i=1;i<n;i+=2){
			if(count(x.begin(),x.end(),i)!=2)
				test=false;
		}
	}
	if(test){
		long long ret=1,a=2,e=n/2;
		while(e>0){
			if(e&1)
				ret=(ret*a)%(1E9+7);
			a=(a*a)%(1E9+7);
			e>>=1;
		}
		cout<<ret<<endl;
	}
	else
		cout<<0<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:30:44: error: invalid operands of types 'long long int' and 'double' to binary 'operator%'
   30 |                                 ret=(ret*a)%(1E9+7);
      |                                     ~~~~~~~^~~~~~~~
      |                                         |       |
      |                                         |       double
      |                                         long long int
a.cc:31:32: error: invalid operands of types 'long long int' and 'double' to binary 'operator%'
   31 |                         a=(a*a)%(1E9+7);
      |                           ~~~~~^~~~~~~~
      |                             |       |
      |                             |       double
      |                             long long int
Language: Java

import java.util.*;
 
public class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] an = new int[n];
		int sameNum = 0;
 
		for( int i=0; i<n; i++ ){
			an[i]=sc.nextInt();
		}
		Arrays.sort(an);

		if( n%2 == 1 && an[n-1] != 0 )
			System.out.println(0);
			return;
		}
		for( int i=(n-1)-n%2; i>0; i-=2 ){
			if(an[i-1] != an[i]){
				System.out.println(0);
				return;
			}
		}
			
		System.out.println( Math.floorMod( (long)Math.pow(2.0,n/2),((long)Math.pow(10.0,9.0)+7) ));
                return;
	}
}


Compiler output:
Main.java:19: error: illegal start of type
		for( int i=(n-1)-n%2; i>0; i-=2 ){
		^
Main.java:19: error: <identifier> expected
		for( int i=(n-1)-n%2; i>0; i-=2 ){
		                       ^
Main.java:19: error: <identifier> expected
		for( int i=(n-1)-n%2; i>0; i-=2 ){
		                            ^
Main.java:26: error: <identifier> expected
		System.out.println( Math.floorMod( (long)Math.pow(2.0,n/2),((long)Math.pow(10.0,9.0)+7) ));
		                  ^
Main.java:26: error: <identifier> expected
		System.out.println( Math.floorMod( (long)Math.pow(2.0,n/2),((long)Math.pow(10.0,9.0)+7) ));
		                                 ^
Main.java:26: error: <identifier> expected
		System.out.println( Math.floorMod( (long)Math.pow(2.0,n/2),((long)Math.pow(10.0,9.0)+7) ));
		                                        ^
Main.java:26: error: <identifier> expected
		System.out.println( Math.floorMod( (long)Math.pow(2.0,n/2),((long)Math.pow(10.0,9.0)+7) ));
		                                                 ^
Main.java:26: error: illegal start of type
		System.out.println( Math.floorMod( (long)Math.pow(2.0,n/2),((long)Math.pow(10.0,9.0)+7) ));
		                                                  ^
Main.java:26: error: <identifier> expected
		System.out.println( Math.floorMod( (long)Math.pow(2.0,n/2),((long)Math.pow(10.0,9.0)+7) ));
		                                                                 ^
Main.java:26: error: <identifier> expected
		System.out.println( Math.floorMod( (long)Math.pow(2.0,n/2),((long)Math.pow(10.0,9.0)+7) ));
		                                                                          ^
Main.java:26: error: illegal start of type
		System.out.println( Math.floorMod( (long)Math.pow(2.0,n/2),((long)Math.pow(10.0,9.0)+7) ));
		                                                                           ^
Main.java:27: error: illegal start of type
                return;
                ^
Main.java:29: error: class, interface, enum, or record expected
}
^
13 errors
Language: C

#include<stdio.h>

int main(void){
  int N,i,j,tmp[50010],hoge,ans;
  int A[100001];
  ans =1;
  scanf("%d",&N);
  for(i=0;i<N;i++){
    scanf("%d",&A[i]);
  }
 
    for(i=0;i<N;i++){
      tmp[A[i]]++;
    }
    if(N%2){
        for(i=1;i<N;i++){
      if(i%2 == 0){
	if(tmp[i] == 2){
	  ans *=2;
	}else{
	    ans *=0;
	}
      }else{
	if(tmp[i]){
	  ans *=0;
      }
	}
      if(tmp[0] != 1){
	ans *= 0;
      }
    }else{
      for(i=0;i<N;i++){
	if(i%2){
	  if(tmp[i]==2){
	    ans *=2;
	  }else{
	    ans *=0;
	  }
	}else{
	  if(tmp[i]){
	    ans *=0;
	  }
	}
      }
    
      printf("%d\n",ans);
      
    
  return 0;
}




Compiler output:
main.c: In function 'main':
main.c:31:6: error: expected '}' before 'else'
   31 |     }else{
      |      ^~~~
main.c:50:1: error: expected declaration or statement at end of input
   50 | }
      | ^
Language: C

#include<stdio.h>
#include<limits.h>

int main(){
	int diff[100000]={0};
	int n,i,temp;
	int max=0;
	int isEven=0;
	scanf("%d",&n);

	scanf("%d",&temp);
	diff[temp]++;
	if(temp>max){
			max=temp;
	}

	if(temp%2==0){
		isEven=1;
	}
	for(i=1;i<n;i++){
		scanf("%d",&temp);
		diff[temp]++;
		if(temp>max){
			max=temp;
		}
	}
	
	for(i=0;i<=max;i++){
		printf("%d\n",diff[i]);
	}
	
	int isPossible=1;
	
	if(isEven){//diffが1020202...{02}の並びになる
		for(i=0;i<=max;i++){
			if(i==0){
				if(diff[i]!=1){
					isPossible--;
					break;
				}
			}else if(i%2==1){
				if(diff[i]!=0){
					isPossible--;
					break;
				}
			}else{//iが0以外の偶数なので2になるべき
				if(diff[i]!=2){
					isPossible--;
					break;
				}
			}
		}
	}else if(!isEven){//diffが020202...{02}の並びになる
		for(i=0;i<=max;i++){
			if(i%2==0){//iが偶数ならdiff[i]は0になるべき
				if(diff[i]!=0){
					isPossible--;
					break;
				}
			}else{//iが奇数なら2
				if(diff[i]!=2){
					isPossible--;
					break;
				}
			}
		}
	}
	
	long long int pattern=1;
	
	if(!isPossible){
		puts("0")
	}else{
		if(isEven){//2^(max/2)通り
			for(i=0;i<max/2;i++){
				pattern *=2;
				pattern %= 1000000007;
			}
			printf("%lld\n",pattern);
		}else{//2^(max+1)/2
			for(i=0;i<(max+1)/2;i++){
				pattern *=2;
				pattern%= 1000000007;
			}
			printf("%lld\n",pattern);
			}
		}
	}
	
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:72:26: error: expected ';' before '}' token
   72 |                 puts("0")
      |                          ^
      |                          ;
   73 |         }else{
      |         ~                 
main.c: At top level:
main.c:90:9: error: expected identifier or '(' before 'return'
   90 |         return 0;
      |         ^~~~~~
main.c:91:1: error: expected identifier or '(' before '}' token
   91 | }
      | ^
Language: C++

int N;
int A[10001]={};
int B[10001][2]={};
int ans;

int main(){
	scanf("%d",&N);
	for(int i=1;i<=N;i++){
		scanf("%d",&A[i]);
		B[i][1]=(N+A[i]+1)/2;
		B[i][2]=(N-A[i]+1)/2;
	}
	if(N%2==0){
		ans==(1<<(N/2))/1000000007;
	}else{
		ans==(1<<((N-1)/2))/1000000007;
	}
	for(int i=1;i<=N;i++){
		if(B[i][1]+B[i][2]!=N-1){
			ans==0;
		}
	}
	printf("%d\n",ans);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: 'scanf' was not declared in this scope
    7 |         scanf("%d",&N);
      |         ^~~~~
a.cc:23:9: error: 'printf' was not declared in this scope
   23 |         printf("%d\n",ans);
      |         ^~~~~~
a.cc:1:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
  +++ |+#include <cstdio>
    1 | int N;
Language: C++

#include <iostream>
#include <cmath>

using namespace std;

int main(){
	int i, j, zcnt = 0;
	int N, a[100001], ncnt[100001] = {0};
	int ans = 0;
	bool flag = 0;
	cin >> N;
	for(i = 0; i < N; ++i){
		cin >> a[i];
		if(a[i] == 0) ++zcnt;
		else ++ncnt[a[i]];
		if(N % 2 == 1 && a[i] % 2 == 1) flag = 1;
		else if(N % 2 == 0 && a[i] % 2 == 0) flag = 1;
	}
	if(N % 2 == 1 && zcnt != 1) flag = 1;
	else if(N % 2 == 0 && zcnt != 0) flag = 1;
	if(flag == 0){
		if(N % 2 == 1){
			for(i = 2; i < N; i+=2){
				if(ncnt[i] == 2) ans += 2;
				else{
					flag = 1;
					break;
				}
			}
		}
		else{
			for(i = 1; i < N; i+=2){
				if(ncnt[i] == 2) ans += 2;
				else{
					flag = 1;
					break;
				}
			}
		}
		if(flag == 0) cout << pow(2, N/2) % (pow(10, 9) + 7) << endl;
	}
	if(flag == 1) cout << 0 << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:40:51: error: invalid operands of types '__gnu_cxx::__promote<double>::__type' {aka 'double'} and '__gnu_cxx::__promote<double>::__type' {aka 'double'} to binary 'operator%'
   40 |                 if(flag == 0) cout << pow(2, N/2) % (pow(10, 9) + 7) << endl;
      |                                       ~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~
      |                                          |                      |
      |                                          |                      __gnu_cxx::__promote<double>::__type {aka double}
      |                                          __gnu_cxx::__promote<double>::__type {aka double}
Language: C++

#include <iostream>
#include <cmath>

using namespace std;

int main(){

  int n;

  cin >> n;

  int d[n];
  int m;

  for(int i = 0; i < n; i++) d[i] = 0;


  for(int i = 0; i < n; i++){
    cin >> m;
    
    d[m]++;
   
    // 同じ絶対値は2だけ
    if(3 == d[m]){
      cout << "0" << endl;
      return 0;
    }
    
    
    // 偶数
    if(0 == n % 2){
            
      // Nが偶数の時は絶対値は必ず奇数
      if(0 == m % 2){
	cout << "0" << endl;
	return 0;
      }
      
      // Nが偶数の時は必ず絶対値が0にならない
      if(1 == d[0]){
	cout << "0" << endl;
	return 0;
      }
      
    }
    
    // 奇数
    else{
      
      
      // Nが奇数の時は絶対値は必ず偶数
      if(1 == m % 2){
	cout << "0" << endl;
	return 0;
      }

      // 絶対値0は必ず1つ
      if(2 == d[0]){
	cout << "0" << endl;
	return 0;
      } 
    }
  }
  
  double answer = 1;
  double c = 1000000000 + 7;


  for(int i = 0; i < (n / 2); i++){
    answer *=2;
  }

  cout << int(answer % c) << endl;
  
  return 0;
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:73:22: error: invalid operands of types 'double' and 'double' to binary 'operator%'
   73 |   cout << int(answer % c) << endl;
      |               ~~~~~~ ^ ~
      |               |        |
      |               double   double
Language: Java

import java.util.Scanner;

public class LiningUp {
	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[sc.nextInt()]++;
		}

		for (int i = 0; i < n; i++) {
			if (n % 2 == 0) {
				if (i % 2 == 1 && a[i] != 2) {
					System.out.println(0);
					return;
				}
			} else {
				if (i == 0 && a[i] != 1) {
					System.out.println(0);
					return;
				} else if (i != 0 && i % 2 == 0 && a[i] != 2) {
					System.out.println(0);
					return;
				}
			}
		}

		System.out.println((long)Math.pow(2,(n / 2))%1000000007);
	}
}

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

import java.util.Scanner;

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[sc.nextInt()]++;
		}

		for (int i = 0; i < n; i++) {
			if (n % 2 == 0) {
				if (i % 2 == 1 && a[i] != 2) {
					System.out.println(0);
					return;
				}
			} else {
				if (i == 0 && a[i] != 1) {
					System.out.println(0);
					return;
				} else if (i != 0 && i % 2 == 0 && a[i] != 2) {
					System.out.println(0);
					return;
				}
			}
		}

		System.out.println((long)Math.pow(2,(n / 2))%1000000007);
	}


Compiler output:
Main.java:31: error: reached end of file while parsing
	}
	 ^
1 error
Language: C++

#include <iostream>
#include <cmath>

using namespace std;

int main(){

  int n;

  cin >> n;

  int d[n];
  int m;

  for(int i = 0; i < n; i++) d[i] = 0;


  for(int i = 0; i < n; i++){
    cin >> m;
    
    d[m]++;

    if(3 == d[m]){
      cout << "0" << endl;
      break;
    }


    // 偶数
    if(0 == n % 2){


      // Nが偶数の時は絶対値は必ず奇数
      if(0 == m % 2){
	cout << "0" << endl;
	return 0;
      }

      // Nが偶数の時は必ず絶対値が0にならない
      if(1 == d[0]){
	cout << "0" << endl;
	return 0;
      }

    }

    // 奇数
    else{


      // Nが奇数の時は絶対値は必ず偶数

      if(1 == m % 2){
	cout << "0" << endl;
	return 0;
      }
      // 絶対値0は必ず1つ
      if(2 == d[0]){
	cout << "0" << endl;
	return 0;
      } 
    }
  }
  
  unsigned int answer = 1;
  unsigned int c = 1000000000 + 7


  for(int i = 0; i < (n / 2); i++){
    answer *=2;
  }
  cout << answer / c << endl;
  
  return 0;
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:69:3: error: expected ',' or ';' before 'for'
   69 |   for(int i = 0; i < (n / 2); i++){
      |   ^~~
a.cc:69:18: error: 'i' was not declared in this scope
   69 |   for(int i = 0; i < (n / 2); i++){
      |                  ^
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main(){
	int i, j, zcnt = 0, ans = 0;
	int N, a[100001], ncnt[100001] = {0};
	bool flag = 0;
	cin >> N;
	for(i = 0; i < N; ++i){
		cin >> a[i];
		if(a[i] == 0) ++zcnt;
		else ++ncnt[a[i]];
		if(a[i] >= N) flag = 1;
		if(N % 2 == 1 && a[i] % 2 == 1) flag = 1;
		else if(N % 2 == 0 && a[i] % 2 == 0) flag = 1;
	}
	if(N % 2 == 1 && zcnt != 1) flag = 1;
	else if(N % 2 == 0 && zcnt != 0) flag = 1;
	if(flag == 0){
		if(N % 2 == 1){
			for(i = 2; i < N; i+=2){
				if(ncnt[i] == 2) ans += 2;
				else{
					flag = 1;
					break;
				}
			}
		}
		else{
			for(i = 1; i < N; i+=2){
				if(ncnt[i] == 2) ans += 2;
				else{
					flag = 1;
					break;
				}
			}
			ans *= 2;
		}
		if(flag == 0) cout << ans % (pow(10, 9) + 7) << endl;
	}
	if(flag == 1) cout << 0 << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:40:43: error: invalid operands of types 'int' and '__gnu_cxx::__promote<double>::__type' {aka 'double'} to binary 'operator%'
   40 |                 if(flag == 0) cout << ans % (pow(10, 9) + 7) << endl;
      |                                       ~~~ ^ ~~~~~~~~~~~~~~~~
      |                                       |                 |
      |                                       int               __gnu_cxx::__promote<double>::__type {aka double}
Language: C++

#include <iostream>
#include <cstdio>

using namespace std;

long long cnt = 1;
int n;
bool v;
int b[100005];

void f(int p)
{
    for(int i = 0; i < p; i++)
    {
        cnt = 2 * cnt % (1e9+7);
    }
}

int main()
{
    scanf("%d", &n);
    for(int i = 0; i < n; i++)
    {
        int t;
        scanf("%d", &t);
        b[t]++;
    }
    if(b[(n + 1) % 2] != (n + 1) % 2 + 1)
    {
        v = true;
    }
    for(int i = (n + 1) % 2 + 2; i < n; i+=2)
    {
        if(b[i] != 2)v = true;
    }
    if(v)
    {
        printf("0");
        return 0;
    }
    else
    {
        f(n / 2);
        printf("%lld", cnt);
    }
    return 0;
}


Compiler output:
a.cc: In function 'void f(int)':
a.cc:15:23: error: invalid operands of types 'long long int' and 'double' to binary 'operator%'
   15 |         cnt = 2 * cnt % (1e9+7);
      |               ~~~~~~~ ^ ~~~~~~~
      |                 |           |
      |                 |           double
      |                 long long int