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

#include <iostream>

using namespace std;

int main()
{
    int n,count=0;
    int arr;
    cin>>n;
    for(int i=0;i<n;i++){
        cin>>arr[i];
      if(i%2!=0&&arr[i]%2!=0)
         count++;
        }
    
    cout<<count;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:17: error: invalid types 'int[int]' for array subscript
   11 |         cin>>arr[i];
      |                 ^
a.cc:12:21: error: invalid types 'int[int]' for array subscript
   12 |       if(i%2!=0&&arr[i]%2!=0)
      |                     ^
Language: C

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

int main()
{
  int i,n,count=0,a[100;]
for(i=1;i<=n;i++)
{
    cin>>a[i];
    if(a[i]%2==1 && i%2==1)
    {
        count++;
    }
}
  printf("%d",count);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:24: error: expected ']' before ';' token
    6 |   int i,n,count=0,a[100;]
      |                        ^
      |                        ]
main.c:7:17: error: expected ';' before ')' token
    7 | for(i=1;i<=n;i++)
      |                 ^
      |                 ;
main.c:7:17: error: expected statement before ')' token
main.c:9:5: error: 'cin' undeclared (first use in this function)
    9 |     cin>>a[i];
      |     ^~~
main.c:9:5: note: each undeclared identifier is reported only once for each function it appears in
main.c:9:10: error: 'a' undeclared (first use in this function)
    9 |     cin>>a[i];
      |          ^
Language: C++

#include <iostream>
using namespace std;

int main() {
  int n;
  cin >> n;
  int a[n],i,count=0;
  for(i=0;i<n;i++)
  {
    cin >> a[i]
  }
  for(i=0;i<n;i++)
  {
    if(i % 2 !=0)
    {
      if(a[i] % 2 !=0)
      {
        count++;
      }
    }
  }
  cout << count << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:16: error: expected ';' before '}' token
   10 |     cin >> a[i]
      |                ^
      |                ;
   11 |   }
      |   ~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{ 
  int n,c=0;
  cin>>n;
  int a[n];
  for(int i=1;i<=n;++i)
  {cin>>a[i];}
  for(int i=1;i<=n;++i)
  {
    if(a[i]%2!=0 && i%2!==0)
      c++;
  }
  cout<<c<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:26: error: expected primary-expression before '=' token
   12 |     if(a[i]%2!=0 && i%2!==0)
      |                          ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
int N,a[100],res=0;
  cin >> N;
  for(int i=0;i<N;i++){
   cin >> a[i];
    if(i%2==0 && a[i]%2==1){
res++;    
    }
  }
  cout << res <<;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:17: error: expected primary-expression before ';' token
   13 |   cout << res <<;
      |                 ^
Language: C

#include<stdio.h>

int main() {
	int N, i, count = 0;
	int a[100];
	scanf_s("%d", &N);
	for(i = 0; i < N; i++)
	{
		scanf_s("%d", &a[i]);
	}

	for(i = 0; i <= N; i = i + 2)
	{
		if(a[i] % 2 != 0)
		{
			count++;
		}
	}
	printf("%d", count);
}

Compiler output:
main.c: In function 'main':
main.c:6:9: error: implicit declaration of function 'scanf_s'; did you mean 'scanf'? [-Wimplicit-function-declaration]
    6 |         scanf_s("%d", &N);
      |         ^~~~~~~
      |         scanf
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 a[];
      a=new int[100];
      for (int i=0;i<N;i++){
        a[i]=sc.nextInt();
      }
      
      int step=0;
      int m=(N+1)/2;
      for (int i=0;i<m;i++){
        if(a[2i-1]%2==1){
        step=step+1;
        }
      }
 
      System.out.println(step);
    }
}

Compiler output:
Main.java:16: error: ']' expected
        if(a[2i-1]%2==1){
              ^
Main.java:16: error: not a statement
        if(a[2i-1]%2==1){
               ^
Main.java:16: error: ';' expected
        if(a[2i-1]%2==1){
                 ^
3 errors
Language: C++

int main(int argc, char* argv[])
{	
	int32_t N, cnt = 0;
	std::cin >> N;
	for (int32_t i = 0; i < N;++i)
	{
		int32_t l;
		std::cin >> l;
		cnt += ((i % 2 != 0) && (l % 2 != 0)) ? 1 : 0;
	}
	std::cout << cnt;
}

Compiler output:
a.cc: In function 'int main(int, char**)':
a.cc:3:9: error: 'int32_t' was not declared in this scope
    3 |         int32_t N, cnt = 0;
      |         ^~~~~~~
a.cc:1:1: note: 'int32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
  +++ |+#include <cstdint>
    1 | int main(int argc, char* argv[])
a.cc:4:14: error: 'cin' is not a member of 'std'
    4 |         std::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 | int main(int argc, char* argv[])
a.cc:4:21: error: 'N' was not declared in this scope
    4 |         std::cin >> N;
      |                     ^
a.cc:5:21: error: expected ';' before 'i'
    5 |         for (int32_t i = 0; i < N;++i)
      |                     ^~
      |                     ;
a.cc:5:29: error: 'i' was not declared in this scope
    5 |         for (int32_t i = 0; i < N;++i)
      |                             ^
a.cc:7:24: error: expected ';' before 'l'
    7 |                 int32_t l;
      |                        ^~
      |                        ;
a.cc:8:22: error: 'cin' is not a member of 'std'
    8 |                 std::cin >> l;
      |                      ^~~
a.cc:8:22: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:8:29: error: 'l' was not declared in this scope
    8 |                 std::cin >> l;
      |                             ^
a.cc:9:17: error: 'cnt' was not declared in this scope; did you mean 'int'?
    9 |                 cnt += ((i % 2 != 0) && (l % 2 != 0)) ? 1 : 0;
      |                 ^~~
      |                 int
a.cc:11:14: error: 'cout' is not a member of 'std'
   11 |         std::cout << cnt;
      |              ^~~~
a.cc:11:14: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:11:22: error: 'cnt' was not declared in this scope; did you mean 'int'?
   11 |         std::cout << cnt;
      |                      ^~~
      |                      int
Language: C

#include<stdio.h>

int main() {
	int N,i,count=0;
	int a[100];
	scanf_s("%d",&N);
	for( i = 0; i < N; i++)
	{
		scanf_s("%d", &a[i]);
	}
	
	for( i = 1; i < N; i=i+2)
	{
		if(a[i]%2!=0)
		{
			count++;
		}
	}
	printf("%d", count);
}

Compiler output:
main.c: In function 'main':
main.c:6:9: error: implicit declaration of function 'scanf_s'; did you mean 'scanf'? [-Wimplicit-function-declaration]
    6 |         scanf_s("%d",&N);
      |         ^~~~~~~
      |         scanf
Language: C++

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

int main()
{
    int N;
    int n[100]={0};
    int count=0;
    scanf("%d",&N);
    for(int i=0;i<N;i++){
        scanf("%d",&n[i]);
    }
    for(int i=0;i<N;i++){
        if((i%2==1&&(n[i]%2==1)){
            count++;
        }
    }
    printf("%d",count);
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:33: error: expected ')' before '{' token
   14 |         if((i%2==1&&(n[i]%2==1)){
      |           ~                     ^
      |                                 )
a.cc:17:5: error: expected primary-expression before '}' token
   17 |     }
      |     ^
Language: C

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

int main(void) {
    int N, i;
    int a;
    int count = 0;

    scanf("%d", &N);

    for(i = 0; i < N; i++) {
        scanf("%d", &a);

        if(i % 2 == 1) {
            if(a % 2 == 1) count++;
        }
    }
    printf("%d\n", count);
    
    return 0;

Compiler output:
main.c: In function 'main':
main.c:20:5: error: expected declaration or statement at end of input
   20 |     return 0;
      |     ^~~~~~
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 a[]=0;
      for (int i=0;i<N;i++){
        a[i]=sc.nextInt();
      }
      
      int step=0;
      int m=(N+1)/2;
      for (int i=0;i<N;i++){
        if(a[i]%2==1){
        step=step+1;
        }
      }
 
      System.out.println(step);
    }
}

Compiler output:
Main.java:7: error: incompatible types: int cannot be converted to int[]
      int a[]=0;
              ^
1 error
Language: Java

import java.util.*;
 
public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        int N = 0;
        int[] a_i;
        int mas=0;
        Scanner scan = new Scanner(System.in);
        N = scan.nextInt();
        if(!(1<=N))System.out.println("Nを1以上の数にしてね";
        a_i = new int[N];
        for(int i = 0;i<N;i++){
            a_i[i] = scan.nextInt();
        }
        for(int i = 0;i<N;i++){
            if(!(a_i[i] <= 100))System.out.println("a_" + i + "を100いかにしてね");
            if(i%2==1 && a_i[i] %2 == 1){
               mas++; 
            }
        }
        System.out.println(mas);
    }
}

Compiler output:
Main.java:11: error: ')' or ',' expected
        if(!(1<=N))System.out.println("N?1????????";
                                                   ^
1 error
Language: C++

n=int(input())
a=[int(i) for i in input().split()]
ans=0
for i in range(n):
    if(a[i]%2==1 and i%2==1):
        ans+=1

print(ans)

Compiler output:
a.cc:1:1: error: 'n' does not name a type
    1 | n=int(input())
      | ^
Language: C

int main(void){
  int N,i,s;
  int a[N];
  
  
  scanf("%d",&N);
  for(i=0;i<N;i++){
   scanf("%d",&a[i])
  }
  s=0;
  for(i=1;i<N;i+=2){
    if(a[i]%2==1){
      s++;
    }
  }
  
  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:6:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    6 |   scanf("%d",&N);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | int main(void){
main.c:6:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    6 |   scanf("%d",&N);
      |   ^~~~~
main.c:6:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:8:21: error: expected ';' before '}' token
    8 |    scanf("%d",&a[i])
      |                     ^
      |                     ;
    9 |   }
      |   ~
Language: Java

import java.io.*;
import java.math.*;
import java.util.*;





public class B {

    static MyScanner in = new MyScanner();
    static   PrintWriter out = new PrintWriter(new OutputStreamWriter(System.out));
    int N;
    static int max = 200001;
    static int [] dr = {1,-1,0,0};
    static int [] dc={0,0,-1,1};
    static boolean [][] grid;
    static int [] bishopr = {-1,1,-1,1};
    static int [] bishopc = {1,1,-1,-1};
    static long H,W,cnt;
    public static void main(String args[]) throws IOException {
            int N = in.nextInt();
            int cnt =0;
            for(int i=1;i<=N;i++){
                int k = in.nextInt();
                if(!isEven(k)&&!isEven(i)){
                    cnt++;
                }
            }
            out.println(cnt);

        out.flush();
        }
       static boolean isValid (int r, int c){
           if(r>=0&&r<H&&c>=0&&c<W){
               return true;
           }
           return false;
       }
        private static void dfs(int r, int c) {
            for(int i=0;i<4;i++){
                int nr = bishopr[i] +r;
                int nc = bishopc[i]+c;
                if(isValid(nr, nc)&&!grid[nr][nc]){
                    cnt++;
                    grid[nr][nc] = true;
                    dfs(nr, nc);
                }
            }
        }

        static boolean isEven(long a) {
            return (a&1)==0;
        }
       static  void swap (int a, int b){

        int temmp = b;
        b=a;
        a = temmp;
        }
    

    public static class MyScanner {
        BufferedReader br;
        StringTokenizer st;
   
        public MyScanner() {
           br = new BufferedReader(new InputStreamReader(System.in));
        }
   
        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }
   
        int nextInt() {
            return Integer.parseInt(next());
        }
   
        long nextLong() {
            return Long.parseLong(next());
        }
   
        double nextDouble() {
            return Double.parseDouble(next());
        }
   
        String nextLine(){
            String str = "";
        try {
           str = br.readLine();
        } catch (IOException e) {
           e.printStackTrace();
        }
        return str;
        }
  
     }
}

Compiler output:
Main.java:9: error: class B is public, should be declared in a file named B.java
public class B {
       ^
1 error
Language: C

int main(void){
  int N,i,a,s;
  int a[N];
  
  
  scanf("%d",N);
  for(i=0;i<N;i++){
   scanf("%d",&a[i])
  }
  s=0;
  for(i=1;i<N;i+=2){
    if(a[i]%2==1){
      s++;
    }
  }
  
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:3:7: error: conflicting types for 'a'; have 'int[N]'
    3 |   int a[N];
      |       ^
main.c:2:11: note: previous declaration of 'a' with type 'int'
    2 |   int N,i,a,s;
      |           ^
main.c:6:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    6 |   scanf("%d",N);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | int main(void){
main.c:6:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    6 |   scanf("%d",N);
      |   ^~~~~
main.c:6:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:8:21: error: expected ';' before '}' token
    8 |    scanf("%d",&a[i])
      |                     ^
      |                     ;
    9 |   }
      |   ~
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main()

{

    int N,ans,a,i;

    ans=0

    cin>>N;

    for(i=1; i<=N; i++)

    {

        cin>>a;

        if(i%2!=0&&a%2!=0)

            ans++;

    }

    cout<<ans<<endl;

    return 0;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:10: error: expected ';' before 'cin'
   11 |     ans=0
      |          ^
      |          ;
   12 | 
   13 |     cin>>N;
      |     ~~~
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 a[];
      for (int i=0;i<N;i++){
        a[i]=sc.nextInt();
      }
      
      int step=0;
      int m=(N+1)/2;
      for (int i=0;i<N;i++){
        if(a[i]%2==1){
        step=step+1;
        }
      }
 
      System.out.println(step);
    }
}

Compiler output:
Main.java:9: error: variable a might not have been initialized
        a[i]=sc.nextInt();
        ^
Main.java:15: error: variable a might not have been initialized
        if(a[i]%2==1){
           ^
2 errors
Language: C++

#include<iostream>
using namespace std;
int main(void)
{
  int N;
  int val;
  int odd=0;
  int inp1[100],inp[100];
  cin>>N;
  
  for(int i=1;i<=N;i++)
  {
   cin>>val;
    inp.push_back(i);
    inp1.push_back(val);
    if(i%2!=0 && val%2!=0 )
    {
      odd++;
    }
  }
  
  cout<<odd;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:9: error: request for member 'push_back' in 'inp', which is of non-class type 'int [100]'
   14 |     inp.push_back(i);
      |         ^~~~~~~~~
a.cc:15:10: error: request for member 'push_back' in 'inp1', which is of non-class type 'int [100]'
   15 |     inp1.push_back(val);
      |          ^~~~~~~~~
Language: C

#include<bits/stdc++.h>
using namespace std;
int main()
{

	int n, count = 0;
	cin >> n;
	int a[n];
	for (int i = 1; i <= n; i++)
	{
		cin >> a[i];
	}
	for (int i = 1; i <= n; i++)
	{
		if ((i & 1 ) && (a[i] & 1)) count++;

	}
	cout << count << endl;

	return 0;

}

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

import java.util.*;
 
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 n = 0;
      for(int j = 0; j < N; j++){
        if(j % 2 == 1 && a[j] % 2 == 1){
          n++;
        }
      }
      system.out.println(n);
    }
}

Compiler output:
Main.java:18: error: package system does not exist
      system.out.println(n);
            ^
1 error
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[] a = new int[N];
      for(int i = 0; i < N; i++){
        int a[i] = sc.nextInt();
      }
      
      int n = 0;
      for(int j = 0; j < N; j++){
        if(j % 2 == 1 && a[j] % 2 == 1){
          n++;
        }
      }
      system.out.println(n);
    }
}

Compiler output:
Main.java:9: error: ']' expected
        int a[i] = sc.nextInt();
              ^
Main.java:9: error: ';' expected
        int a[i] = sc.nextInt();
               ^
2 errors
Language: C++

#include "bits/stdc++.h" // 提出時こちらで問題なし
using namespace std;

void main() {
	int num_N = 0;
	int ans = 0;
	cin >> num_N;

	vector<int> v(num_N);
	for (int i = 0; i < num_N;  i++) {
		cin >> v.at(i);
	}

	int tmp = 0;
	for (int i = 0; i < num_N; i++) {
		if (i % 2 == 1) {
			tmp = v.at(i);
			if (tmp % 2 == 1) {
				ans++;
			}
			else {
				// pass;
			}
		}
		else {
			//pass;
		}
	}
	cout << ans;
	//system("pause");
}

Compiler output:
a.cc:4:1: error: '::main' must return 'int'
    4 | void main() {
      | ^~~~
Language: C++

#include<iostream>
using namespace std;
int main(void)
{
  int N;
  int val;
  std::vector<int> inp1,inp;
  cin>>N;
  
  for(int i=0;i<N;i++)
  {
   std::cin>>val;
    inp.push_back(i);
    inp1.push_back(val);
  }
  val=0;
  for(int i=0;i<N;i++)
  {
   if(inp[i]%2!=0 && inp1[i]%2!=0)
   {
     val++;
   }
  }
  std::cout<<val;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:8: error: 'vector' is not a member of 'std'
    7 |   std::vector<int> inp1,inp;
      |        ^~~~~~
a.cc:2:1: note: 'std::vector' is defined in header '<vector>'; this is probably fixable by adding '#include <vector>'
    1 | #include<iostream>
  +++ |+#include <vector>
    2 | using namespace std;
a.cc:7:15: error: expected primary-expression before 'int'
    7 |   std::vector<int> inp1,inp;
      |               ^~~
a.cc:13:5: error: 'inp' was not declared in this scope; did you mean 'int'?
   13 |     inp.push_back(i);
      |     ^~~
      |     int
a.cc:14:5: error: 'inp1' was not declared in this scope
   14 |     inp1.push_back(val);
      |     ^~~~
a.cc:19:7: error: 'inp' was not declared in this scope; did you mean 'int'?
   19 |    if(inp[i]%2!=0 && inp1[i]%2!=0)
      |       ^~~
      |       int
a.cc:19:22: error: 'inp1' was not declared in this scope
   19 |    if(inp[i]%2!=0 && inp1[i]%2!=0)
      |                      ^~~~
Language: C

#include <stdio.h>

int main(int argc, const char * argv[]) {

    int N=0;
    int i=0;
    int cou=0;
    
    scanf("%d",&N);
    
    int a[N];
    
    for (i=1;i<=N;i++){
        scanf("%d",&a[i]);
    }
    
    for (i=1;i=<N;i++){
        if (a[i] % 2 == 1 && N % 2 == 1){
            cou++;
        }
    }
    printf("%d",cou);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:17:16: error: expected expression before '<' token
   17 |     for (i=1;i=<N;i++){
      |                ^
Language: C++

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

using namespace std;

int main()
{
    int n;
    int i;
    int cnt = 0;
    int *str;
    cin >> n;
    str = new int[n];
    for (i = 0; i < n; i++)
    {
        if (scanf("%d", &str[i]) != 1) {
            return;
        }
    }
    for (i = 1; i < n; i++)
    {
        if (i % 2 == 1 && str[i-1] % 2 == 1)
        {
            cnt++;
        }
    }
    cout << cnt << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:13: error: return-statement with no value, in function returning 'int' [-fpermissive]
   18 |             return;
      |             ^~~~~~
Language: C

#include <iostream>
#include <queue>
#include <set>
#include <map>
#include <vector>
#include <stack>
#include <cmath>
#include <algorithm>
#include <cstdio>
#include <cctype>
#include <functional>
#include <string>
#include <cstring>
#include <sstream>
#include <deque>
#define fir first
#define sec second
using namespace std;

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

const int inf1=2e9+9;
const ll inf2=8e18+9;
const ll mol=1e4;//1e9+7;
const int maxn=1e5+9;
const ll maxx=1e12+9;

int n,num;

int main()
{
    cin>>n;
    int cnt=0;
    for(int i=1;i<=n;i++)
    {
        cin>>num;
        if((num&1)&&(i&1)) cnt++;
    }
    cout<<cnt<<endl;
}


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

#include<iostream>
using namespace std;
int main
{
  int n,k;
  scanf("%d",&n);
  int count=0;
  for(int i=1;i<=n;i++)
  {
    scanf("%d",&k);
    if(i%2==1 && k%2==1)
    count++;
    }
    printf("%d\n",count);
    return 0;
}

Compiler output:
a.cc:3:5: error: cannot declare '::main' to be a global variable
    3 | int main
      |     ^~~~
a.cc:5:3: error: expected primary-expression before 'int'
    5 |   int n,k;
      |   ^~~
a.cc:5:3: error: expected '}' before 'int'
a.cc:4:1: note: to match this '{'
    4 | {
      | ^
a.cc:6:8: error: expected constructor, destructor, or type conversion before '(' token
    6 |   scanf("%d",&n);
      |        ^
a.cc:8:3: error: expected unqualified-id before 'for'
    8 |   for(int i=1;i<=n;i++)
      |   ^~~
a.cc:8:15: error: 'i' does not name a type
    8 |   for(int i=1;i<=n;i++)
      |               ^
a.cc:8:20: error: 'i' does not name a type
    8 |   for(int i=1;i<=n;i++)
      |                    ^
a.cc:14:11: error: expected constructor, destructor, or type conversion before '(' token
   14 |     printf("%d\n",count);
      |           ^
a.cc:15:5: error: expected unqualified-id before 'return'
   15 |     return 0;
      |     ^~~~~~
a.cc:16:1: error: expected declaration before '}' token
   16 | }
      | ^
Language: C++

#include "bits/stdc++.h" // 提出時こちらで問題なし
using namespace std;

void main() {
	int num_N = 0;
	int ans = 0;
	cin >> num_N;

	int tmp;
	for (int i = 0; i < num_N; i++) {
		cin >> tmp;
		if (tmp % 2 == 1) {
			ans++;
		}
		else {
			// pass;
		}
		cin >> tmp;
	}
	cout << ans;
}

Compiler output:
a.cc:4:1: error: '::main' must return 'int'
    4 | void main() {
      | ^~~~
Language: C++

#include <iostream>
using namespace std;

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

  vector<int> vec(N);
  for (int i = 0; i < N; i++) {
    cin >> vec.at(i);
  }

  int count = 0;

  for (int i = 0; i < N; i++) {
    if (i + 1 % 2 == 1 && i + 1 == vec.at(i)) {
      count++;
    }
  }

  cout << count << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: 'vector' was not declared in this scope
    8 |   vector<int> vec(N);
      |   ^~~~~~
a.cc:2:1: note: 'std::vector' is defined in header '<vector>'; this is probably fixable by adding '#include <vector>'
    1 | #include <iostream>
  +++ |+#include <vector>
    2 | using namespace std;
a.cc:8:10: error: expected primary-expression before 'int'
    8 |   vector<int> vec(N);
      |          ^~~
a.cc:10:12: error: 'vec' was not declared in this scope
   10 |     cin >> vec.at(i);
      |            ^~~
a.cc:16:36: error: 'vec' was not declared in this scope
   16 |     if (i + 1 % 2 == 1 && i + 1 == vec.at(i)) {
      |                                    ^~~
Language: C++

#include <iostream>
using namespace std;

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

  vector(int) vec(N);
  for (int i = 0; i < N; i++) {
    cin >> vec.at(i);
  }

  int count = 0;

  for (int i = 0; i < N; i++) {
    if (i + 1 % 2 == 1 && i + 1 == vec.at(i)) {
      count++;
    }
  }

  cout << count << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:10: error: expected primary-expression before 'int'
    8 |   vector(int) vec(N);
      |          ^~~
a.cc:8:3: error: 'vector' was not declared in this scope
    8 |   vector(int) vec(N);
      |   ^~~~~~
a.cc:2:1: note: 'std::vector' is defined in header '<vector>'; this is probably fixable by adding '#include <vector>'
    1 | #include <iostream>
  +++ |+#include <vector>
    2 | using namespace std;
a.cc:10:12: error: 'vec' was not declared in this scope
   10 |     cin >> vec.at(i);
      |            ^~~
a.cc:16:36: error: 'vec' was not declared in this scope
   16 |     if (i + 1 % 2 == 1 && i + 1 == vec.at(i)) {
      |                                    ^~~
Language: C

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

int main(){
	int n,ans=0;
	cin>>n;
	for(int i=0;i<n;i++){
		int a;
		cin>>a;
		if(a%2 != 0 && i%2 == 0){
			ans++;
		}
	}
	cout<<ans<<endl;
}

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

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep2(i, s, n) for (int i = (s); i < (int)(n); i++)
typedef long long int ll;
typedef unsigned long long int ull;

int main(){
  ios::sync_with_stdio(false);
  cin.tie(0);
  int a,b,c,n,ans=0;
  string s,t;
  cin >>n;
  rep(i,n) {
    int x;
    cin >>x;
    if(i%2==0&&x%2==1)ans++;
  }
  cout <<;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:10: error: expected primary-expression before ';' token
   19 |   cout <<;
      |          ^
Language: C++

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

int main(){
    int n,c=0;
    cin >> n;
    vector<int> a(n);
    for(int i=0; i<n; i++){
        cin >> a.at(i);
    }
    for(int i=0; i<n; i++){
        if(i%2==0){
            if(a.at(i)%2==1) c++;
        }
        else continue;
    }
    cout << c << endl;

Compiler output:
a.cc: In function 'int main()':
a.cc:17:23: error: expected '}' at end of input
   17 |     cout << c << endl;
      |                       ^
a.cc:4:11: note: to match this '{'
    4 | int main(){
      |           ^
Language: C++

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

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

  for(int i=0;i<n;i++){
    if(i%2==1&&a[i]%2==1){
      cut++;
    }
  }

  cout << cut << endl;

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: 'i' was not declared in this scope
    7 |   int a[i];
      |         ^
a.cc:10:12: error: 'a' was not declared in this scope
   10 |     cin >> a[i];
      |            ^
a.cc:14:16: error: 'a' was not declared in this scope
   14 |     if(i%2==1&&a[i]%2==1){
      |                ^
Language: C

#include <stdio.h>
int main(void){
int a;
  int sum;
  int i;
   scanf("%d", &a);
  int number[a];
  for (i=0; i<a; i++){
    scanf("%d", &number[i]);
    if ((i+1)%2!=0){
      if (number[i])%2!=0){
        sum++;
      }
    }
  }
  printf("%d", sum);
}

Compiler output:
main.c: In function 'main':
main.c:11:21: error: expected expression before '%' token
   11 |       if (number[i])%2!=0){
      |                     ^
main.c:11:26: error: expected statement before ')' token
   11 |       if (number[i])%2!=0){
      |                          ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  int n, x, cnt = 0;
  cin>>n;
  //vector<int> vc(n+1);
  for(int i=1; i<=n; i++)
  {
    cin>>x;
    if(i % 2 == 1 && x % 2 == 1) cnt++; 
  }
  cout<<cnt;
  retrurn 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:3: error: 'retrurn' was not declared in this scope
   14 |   retrurn 0;
      |   ^~~~~~~
Language: C

#include<bits/stdc++.h>
using namespace std;
int main()
{

	long long int n, count = 0;
	cin >> n;
	int a[n];
	for (int i = 1; i <= n; i++)
	{
		cin >> a[i];
	}
	for (int i = 1; i <= n; i++)
	{
		if ((i & 1 ) && (a[i] & 1)) count++;

	}
	cout << count << endl;

	return 0;

}

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

#include <bits/stdc++.h>
using namespace std;
int main() {
  int N,F;
  int count = 0;
  cin >> N;
  if(N < 0){
    F = 1
  }
  vector<int> a(N);
  for(int i = 0;i < N;i++){
    cin >> a.at(i);
    if (a.at(i) > 100){
      break;
      F = 1;
    }
    if(i % 2 == 1 and a.at(i) % 2 == 1){
      count += 1;
    }
  }
  if (F != 1){
    cout << count << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:10: error: expected ';' before '}' token
    8 |     F = 1
      |          ^
      |          ;
    9 |   }
      |   ~
Language: C

#include<bits/stdc++.h>
using namespace std;
int main()
{

	long long int n, count = 0;
	cin >> n;
	vector<long long int> a;
	for (int i = 1; i <= n; i++)
	{
		cin >> a[i];
		if ((i & 1 ) && (a[i] & 1)) count++;
	}

	cout << count << endl;

	return 0;

}

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

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

int main(){
    int N;
    int c = 0;
    cin >> N;
    vector<int> a(N);
    for (int i = 0; i < N; i++) {
      cin >> vec.at(i);
    }
    for (int i = 0; i<N; i++) {
      if (i%2==1 && vec[i]%2==1){
        c++;
      }
    }
    cout << c << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:14: error: 'vec' was not declared in this scope
   10 |       cin >> vec.at(i);
      |              ^~~
a.cc:13:21: error: 'vec' was not declared in this scope
   13 |       if (i%2==1 && vec[i]%2==1){
      |                     ^~~
Language: Java

import java.util.*;



public class b {
  public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    int n = scanner.nextInt();
    int a[] = new int[n+1];
    for(int i =1; i<n+1; i++){
      a[i] = scanner.nextInt();
    }

    int ans  =0;
    for(int i = 1; i < n+1; i+= 2){
      if( a[i] % 2 == 1){
        ans++;
      }
    }
    


    System.out.println(ans);
    
    scanner.close();
    return;
  }
  
}


Compiler output:
Main.java:5: error: class b is public, should be declared in a file named b.java
public class b {
       ^
1 error
Language: C++

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

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);

	int n,count=0,temp;
	cin>>n;
	for (int i = 0; i < n; ++i)
	{
		cin>>temp;
		if((i+1)%2==1 && temp%2==1)
			count+++;
	}
	cout<<count<<endl;

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:16:33: error: expected primary-expression before ';' token
   16 |                         count+++;
      |                                 ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  int a;
  cin>>a;
  int b=0;
  vector<int> vec(N);
  for(int i=0;i<N;i++){
    cin>>vec.at(i);
    if(i%2==0&&vec.at(i)%2==1){
      b+=1;
    }
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:19: error: 'N' was not declared in this scope
    7 |   vector<int> vec(N);
      |                   ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define ll long long
 
int main() {
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	ll n,nu,i,c=0;
	cin>>n;
	for(i=0;i<n;i++) {
		cin>>nu
		if(i%2==0 && nu&1) c++;
	}
	cout<<c;
	
	
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:24: error: expected ';' before 'if'
   10 |                 cin>>nu
      |                        ^
      |                        ;
   11 |                 if(i%2==0 && nu&1) c++;
      |                 ~~
Language: C++

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

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);

	int n,count=0,temp;
	for (int i = 0; i < n; ++i)
	{
		cin>>temp;
		if((i+1)%2==1 && temp%2==1)
			count+++;
	}
	cout<<count<<endl;

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:33: error: expected primary-expression before ';' token
   15 |                         count+++;
      |                                 ^
Language: C++

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


#define ll long long
#define IM INT_MAX
#define LM LLONG_MAX
#define m_p make_pair
#define MOD 1000000007
#define dbg(x) cerr << #x << " = " << x << "\n"


/*
ID: vlad.io1
TASK: 
LANG: C++
*/


bool comp(int a, int b) {
	return a > b;
}


template<typename T>
T gcd(T a, T b) {
	while (a != 0 && b != 0) {
		if (a > b) {
			a %= b;
		} else {
			b %= a;
		}
	}
	return (a > b ? a : b);
}


void solve() {
	int n;
	cin >> n;
	int cnt=0;
	for(int i = 1; i <= n; i++) {
		cin >> x;
		if((i&1) && (x&1)) cnt++;
	}
	cout << cnt << ' ';
}


int main() { 
	ios::sync_with_stdio(0);
	cin.tie(0);

	//freopen("output.txt", "w", stdout);
	//freopen("input.txt", "r", stdin);

	int t=1;
	//cin >> t;

	while(t--)
		solve();
}


























Compiler output:
a.cc: In function 'void solve()':
a.cc:43:24: error: 'x' was not declared in this scope
   43 |                 cin >> x;
      |                        ^
Language: C++

using namespace std;

#define rep(i, n) for(int i=0; i<n; ++i)
#define repit(it, li) for(auto it=li.begin(); it!=li.end(); it++)
#define ll long long int

int main(){
   int n;
   cin>>n;
   vector<int> a(n);
   rep(i, n) cin>>a[i];

   int cnt=0;
   rep(i, n) if((i+1)%2==1 && a[i]%2==1) cnt++;

   cout << cnt << endl;
   return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:4: error: 'cin' was not declared in this scope
    9 |    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:10:4: error: 'vector' was not declared in this scope
   10 |    vector<int> a(n);
      |    ^~~~~~
a.cc:1:1: note: 'std::vector' is defined in header '<vector>'; this is probably fixable by adding '#include <vector>'
  +++ |+#include <vector>
    1 | using namespace std;
a.cc:10:11: error: expected primary-expression before 'int'
   10 |    vector<int> a(n);
      |           ^~~
a.cc:11:19: error: 'a' was not declared in this scope
   11 |    rep(i, n) cin>>a[i];
      |                   ^
a.cc:14:31: error: 'a' was not declared in this scope
   14 |    rep(i, n) if((i+1)%2==1 && a[i]%2==1) cnt++;
      |                               ^
a.cc:16:4: error: 'cout' was not declared in this scope
   16 |    cout << cnt << endl;
      |    ^~~~
a.cc:16:4: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:16:19: error: 'endl' was not declared in this scope
   16 |    cout << cnt << 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;
Language: C++

#include<iostream>
#include<vector>
using namespace std;
#define ll long long int
int main()
{
  ll n,count=0;
  cin>>n;
  vector<ll> a(n,0);
  for(i=0;i<n;i++)
  {cin>>a[i];
  if(((i+1)%2)==0)
  if((a[i]%2)==0)
    count++;}
  cout<<count;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:7: error: 'i' was not declared in this scope
   10 |   for(i=0;i<n;i++)
      |       ^
Language: Java

import java.util.*;



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

    int ans  =0;
    for(int i = 1; i < n; i+= 2){
      if( a[i] % 2 == 1){
        ans++;
      }
    }
    


    System.out.println(ans);
    
    scanner.close();
    return;
  }
  
}


Compiler output:
Main.java:5: error: class b is public, should be declared in a file named b.java
public class b {
       ^
1 error
Language: C++

n = int(input())
l = list(map(int, input().split()))
ans = 0

for i in range(n):
    if (i+1) % 2 == 1 and l[i] % 2 == 1:
        ans += 1

print(ans)


Compiler output:
a.cc:1:1: error: 'n' does not name a type
    1 | n = int(input())
      | ^
Language: C++

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

void solve() {
	int n;
	cin >> n;
	int temp;
	for (int i=1; i<=n; ++i) {
		cin >> temp;
		if (i & 1 && temp & 1) ++count; 
	}
	cout << temp;
}

int32_t main() {
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	int tc = 1; //cin >> tc;
	while (tc--) {
		solve();
		cout << '\n';
	}
}


Compiler output:
a.cc: In function 'void solve()':
a.cc:10:42: error: no pre-increment operator for type
   10 |                 if (i & 1 && temp & 1) ++count;
      |                                          ^~~~~
Language: C++

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

using ll = long long int;
#define rep(i,a,b) for(int i=a;i<b;i++)
#define rrep(i,a,b) for(int i=a;i>=b;i--)
#define fore(i,a) for(auto &i:a)
#define all(x) (x).begin(),(x).end()

#define pi 3.14159265358979323846

template<class T>bool ch1000000(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }





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

  int ans = 0;

  rep(i, 1, N+1){
    int ai;
    cin >> ai;

    if(ai % 2 == 1 && i % 2 == 1) ans++;
  }

  cout << ans << endl;


  int N;
  cin >> N;


  // cout << setprecision(8) << ans << endl;  // For double
}



Compiler output:
a.cc: In function 'int main()':
a.cc:35:7: error: redeclaration of 'int N'
   35 |   int N;
      |       ^
a.cc:20:7: note: 'int N' previously declared here
   20 |   int N;
      |       ^
Language: C++


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

int main() {
  int N;
  cin >> N;
  vector<int> a(N);
 for(int i=0;i<N;i++){
   cin >> a.at(i);
 }
  int ans = 0;
  for(int i=0;i<N;i++){
    if(i%2 == 0 && a.at(i)%2 == 1)
      ans++;
  }
}
cout << ans << endl;
}


Compiler output:
a.cc:20:1: error: 'cout' does not name a type
   20 | cout << ans << endl;
      | ^~~~
a.cc:21:1: error: expected declaration before '}' token
   21 | }
      | ^
Language: Java

import java.util.Scanner;

public class Main2 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int N = scanner.nextInt();
        int ans = 0;
        for (int i = 1; i <= N; i++) {
            int a = scanner.nextInt();
            if(a%2==1 && i%2==0) ans++;
        }

        System.out.println(ans);

    }



}


Compiler output:
Main.java:3: error: class Main2 is public, should be declared in a file named Main2.java
public class Main2 {
       ^
1 error
Language: C

#include <bits/stdc++.h>
#define mem(i,a) memset(i,a,sizeof(i))
#define PI acos(-1.0)
#define DMAX 100000+5
#define MOD 998244353
#define eps 1e-8
#define mp make_pair
#define INF 1000000000+9
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef double db;
template<class T> inline void read(T &x){
    x=0; 
    T f=1;
    char ch=getchar();
    while(ch<'0' || ch>'9'){
        if(ch=='-'){
            f=-1;
        }
        ch=getchar();
    }
    while(ch<='9' && ch>='0'){
        x=x*10+(ch-'0');
        ch=getchar();
    }
    x*=f;
}

int ans=0;
int main(){
    int a[105];
    int n;
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i];
        if(a[i]%2==1 && i%2==1){
            ans++;
        }
    }
    cout<<ans<<endl;
    return 0;
}


Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
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[] a = new int[N];
		int ans = 0;
		for(int i = 0;i < N;i++){
			a[i] = sc.nextInt();
			if(i % 2 == 1 && a[i] % 2 b == 1){
				ans++;
			}
		}
		System.out.println(ans);
	}
}

Compiler output:
Main.java:10: error: ')' expected
			if(i % 2 == 1 && a[i] % 2 b == 1){
			                         ^
Main.java:10: error: not a statement
			if(i % 2 == 1 && a[i] % 2 b == 1){
			                            ^
Main.java:10: error: ';' expected
			if(i % 2 == 1 && a[i] % 2 b == 1){
			                                ^
3 errors
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define for0(n) for(i=0; i<(n); i++)
#define for1(n) for(i=1; i<=(n); i++)


int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    ll _,i,j,n,a,b,e,k,u,t,x=1,m,y,q,f=1,c=0,d=0,l,p,z,o,r,g;
    string ss,s;
    cin>>n;
    for1(n)
    {
        cin>>x;
        if(i%2&&x%2)c++;
    }
    cout<<c<<endl;
}

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define for0(n) for(i=0; i<(n); i++)
#define for1(n) for(i=1; i<=(n); i++)


int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    ll _,i,j,n,a,b,e,k,u,t,x=1,m,y,q,f=1,c=0,d=0,l,p,z,o,r,g;
    string ss,s;
    cin>>n;
    for1(n)
    {
        cin>>x;
        if(i%2&&x%2)c++;
    }
    cout<<c<<endl;
}



Compiler output:
a.cc:29:5: error: redefinition of 'int main()'
   29 | int main()
      |     ^~~~
a.cc:8:5: note: 'int main()' previously defined here
    8 | int main()
      |     ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
#define pb push_back
#define f(i,n) for(int i=0; i<n; ++i)
#define fi(i,st,n) for(int i=st; i<=n; ++i)
#define veci vector<int>
#define vecp vector<pair<int,int> >
#define vecl vector<ll>
int prime[100000+10];

ll lcm(ll a, ll b) {
	return a*b/__gcd(a,b);
}

ll power(ll a, ll n, ll mod) {
	ll res = 1;
	while(n > 0) {
		if(n&1) {
			res = (res*a)%mod;
		}
		a = (a*a)%mod;
		n = n/2;
	}
	return res;
}

ll sum(int arr[], int n) {
	ll res = 0;
	f(i,n) {
		res += arr[i];
	}
	return res;
}

void seive() {
	prime[1] = 0;
	for(int i=2; i<=100000; i++) {
		prime[i] = 1;
	}
	for(ll i=2; i<=100000; i++) {
		if(prime[i]) {
			for(ll j=i*i; j<=100000; j+=i) {
				prime[j] = 0;
			}
		}
	}
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	int t = 1;
//	cin>>t;
	while(t--){
		int n;
		cin>>n;
		int arr[n+1];
		int ans = 0;
		for(int i=1; i<=n; i++) {
			cin>>arr[i];
			if(i%2and arr[i]%2) ans++;
		}
		cout<<ans<<"\n";
 	}
 	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:64:30: error: unable to find numeric literal operator 'operator""and'
   64 |                         if(i%2and arr[i]%2) ans++;
      |                              ^~~~
a.cc:64:34: error: expected ')' before 'arr'
   64 |                         if(i%2and arr[i]%2) ans++;
      |                           ~      ^~~~
      |                                  )
Language: C++

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

int main() {
  int M;
  cin >> N;
  vector<int> a(N);
  int ans = 0;
  for (int i = 0; i < N; i++) {
    cin >> a[i];
    if (i % 2 == 0 && a[i] % 2 == 1) ans++;
  }
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:10: error: 'N' was not declared in this scope
    7 |   cin >> N;
      |          ^
Language: C++

#include <bits/stdc++.h>
#include <math.h>
#include <vector>
#include <queue>
#include <iomanip>
#include <string>
#include <algorithm>
using namespace std;
using Graph = vector<vector<int>>;
#define rep(i,n) for(int i=0;i<n;i++)
#define rep_1 (i,j,n) for(int i=j;i<n;i++)
typedef long long ll;
typedef long l;
const ll l_INF = 101010101000;
const int INF = 1010101010;
const int dx[4] = {-1,0,1,0};
const int dy[4] = {0,-1,0,1};
using vi = vector<int>;
using vl = vector<ll>;
using vvi = vector<vi>;
using pii = pair<int,int>;

int main(){
  int n; cin>>n;
  //string s; cin>>s;
  rep(i,n){
    int a;
    int c=0;
    cin>>a;
    if(a%2==0&&i%2==1){
      c++;
    }
  }
  cout<<c;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:34:9: error: 'c' was not declared in this scope
   34 |   cout<<c;
      |         ^
Language: C++

#include <iostream>
#include <iomanip>
#include <algorithm>
#include <stdio.h>
#include <string>
#include <vector>
#include <queue>
#include <deque>
#include <stack>
#include <utility>
#include <tuple>
#include <math.h>
#include <set>
#include <map>
using namespace std ;
using ll = long long ;
using ld = long double ;
using vll = vector<ll> ;
using vvll = vector<vll> ;
using vc = vector<char> ;
using vvc = vector<vc> ;
using vb = vector<bool> ;
using vvb = vector<vb> ;
using pll = pair<ll,ll> ;
#define all(v) v.begin(),v.end() 
const ll INF = 1e18 ;
const ll mod = 1e9+7 ;
const double pie = acos(-1); 
vll dx4 = {-1,0,1,0} ;
vll dy4 = {0,-1,0,1} ;
vll dx8 = {-1,0,1,1,1,0,-1,-1} ;
vll dy8 = {-1,-1,-1,0,1,1,1,0} ; 

void fix_cout(){cout << fixed << setprecision(20) ; }
ll gcd(ll a,ll b){if(b==0) return a ; return gcd(b,a%b) ; }
ll lcm(ll a,ll b){return a/gcd(a,b)*b ; }
void chmax(ll &a,ll b){if(a<b) a = b ; }
void chmin(ll &a,ll b){if(a>b) a = b ; }

int main(){
	ll n ; cin >> n ;
	ll ans = 0 ;
	for(int i=1;i<=n;i++){
		ll a ; cin >> a ;
		ans += ((a&1)&&(i&1))
	}
	cout << ans << endl ;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:45:38: error: expected ';' before '}' token
   45 |                 ans += ((a&1)&&(i&1))
      |                                      ^
      |                                      ;
   46 |         }
      |         ~
Language: C

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>

using namespace std;

int N, a[120];

int main(void) {

	cin >> N;
	for (int i = 1; i <= N; i++) {
		cin >> a[i];
	}

	int ans = 0;

	for (int i = 1; i <= N; i++) {
		if ((i % 2 == 1) && (a[i] % 2 == 1)) { ans++; }
	}

	cout << ans << endl;

	return 0;
}

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