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

import java.util.Scanner;
import java.math.BigDecimal;
import java.util.List;
import java.util.ArrayList;
public class Main {
  public static final long max = (long)Math.pow(10,18);

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    sc.next();
    List<Long> longList = new ArrayList<>();

    while (sc.hasNext()) {
      long next = sc.nextLong();
      longList.add(next);
    }
    sc.close();

    if (longList.contains(0)) {
      System.out.println("0");
      sc.close();
      return;
    }

    long result = 1;
    longList.forEach(v -> {
      result = result * v;
      if (result<0) { // overflow
        System.out.println("-1");
        return;
      }
    });
    if (result > max) {
        System.out.println("-1");
    } else {
      System.out.println(String.valueOf(result));
    }
  }
}

Compiler output:
Main.java:27: error: local variables referenced from a lambda expression must be final or effectively final
      result = result * v;
               ^
Main.java:27: error: local variables referenced from a lambda expression must be final or effectively final
      result = result * v;
      ^
Main.java:28: error: local variables referenced from a lambda expression must be final or effectively final
      if (result<0) { // overflow
          ^
3 errors
Language: Java

import java.util.Scanner;
import java.math.BigDecimal;
import java.util.List;
import java.util.ArrayList;
public class Main {
  public static final long max = (long)Math.pow(10,18);

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    sc.next();
    List<Long> longList = new ArrayList<>();

    while (sc.hasNext()) {
      long next = sc.nextLong();
      longList.add(next);
    }
    sc.close();

    if (longList.contains(0)) {
      System.out.println("0");
      sc.close();
      return;
    }

    long result = 1;
    longList.forEach(v -> {
      result = result * v;
      if (result<0) { // overflow
        System.out.println("-1");
        return;
      }
    })
    if (result > max) {
        System.out.println("-1");
    } else {
      System.out.println(String.valueOf(result));
    }
  }
}

Compiler output:
Main.java:32: error: ';' expected
    })
      ^
1 error
Language: C++

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

int main() {
  int N;
  cin >> N;
  vector<int> A(N);
  rep(i,N) {
    cin >> A[i];
    if(A[i]==0) {
      cout << 0 << endl;
      break;
    }
  }
  long long s=0;
  for(int i=0; i<N; i++) {
    s*=A[i];
    if(s>=1000000000000000000) {
      cout << -1 << endl;
      break;
  }
  cout << s << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:2: error: expected '}' at end of input
   24 | }
      |  ^
a.cc:5:12: note: to match this '{'
    5 | int main() {
      |            ^
Language: Java

import java.util.Scanner;
import java.math.BigDecimal;
public class Main {
  	public static final BigDecimal max = BigDecimal.valueOf(Math.pow(10,18));

    public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
        sc.next();
      	BigDecimal result = BigDecimal.ONE;
        while (sc.hasNext()) {
          BigDecimal next = new BigDecimal(sc.next())
          if (next.compareTo(BigDecimal.ZERO) == 0) {
            System.out.println("0");
            return;
          }
          result = result.multiply(next);
        }
        if (result.compareTo(max) > 0) {
            System.out.println("-1");
        } else {
          System.out.println(result.toString());
        }
    }
}


Compiler output:
Main.java:11: error: ';' expected
          BigDecimal next = new BigDecimal(sc.next())
                                                     ^
1 error
Language: Java

import java.util.Scanner;
import java.math.BigDecimal;
public class Main {
  	public static final BigDecimal max = BigDecimal.valueOf(Math.pow(10,18));

    public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
        sc.nextInt();
      	BigDecimal result = BigDecimal.ONE;
        while (sc.hasNext()) {
          BigDecimal next = new BigDecimal(sc.next());
          result = result.multiply(next);
        }
        if (result.compareTo(max) > 0) {
            System.out.println("-1");
        } else {
          System.out.println(Sresult.toString());
        }
    }
}


Compiler output:
Main.java:17: error: cannot find symbol
          System.out.println(Sresult.toString());
                             ^
  symbol:   variable Sresult
  location: class Main
1 error
Language: Java

import java.util.Scanner;
public class Main {
  	public static final BigDecimal max = BigDecimal.valueOf(Math.pow(10,18));

    public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
        sc.nextInt();
      	BigDecimal result = BigDecimal.ONE;
        while (sc.hasNextLong()) {
          BigDecimal next = new BigDecimal(sc.next());
          result = result.multiply(next);
        }
        if (result.compare(max) > 0) {
            System.out.println("-1");
        } else {
          System.out.println(Sresult.toString());
        }
    }
}


Compiler output:
Main.java:3: error: cannot find symbol
  	public static final BigDecimal max = BigDecimal.valueOf(Math.pow(10,18));
  	                    ^
  symbol:   class BigDecimal
  location: class Main
Main.java:3: error: cannot find symbol
  	public static final BigDecimal max = BigDecimal.valueOf(Math.pow(10,18));
  	                                     ^
  symbol:   variable BigDecimal
  location: class Main
Main.java:8: error: cannot find symbol
      	BigDecimal result = BigDecimal.ONE;
      	^
  symbol:   class BigDecimal
  location: class Main
Main.java:8: error: cannot find symbol
      	BigDecimal result = BigDecimal.ONE;
      	                    ^
  symbol:   variable BigDecimal
  location: class Main
Main.java:10: error: cannot find symbol
          BigDecimal next = new BigDecimal(sc.next());
          ^
  symbol:   class BigDecimal
  location: class Main
Main.java:10: error: cannot find symbol
          BigDecimal next = new BigDecimal(sc.next());
                                ^
  symbol:   class BigDecimal
  location: class Main
Main.java:16: error: cannot find symbol
          System.out.println(Sresult.toString());
                             ^
  symbol:   variable Sresult
  location: class Main
7 errors
Language: Java

import java.util.Scanner;
public class Main {
  
  public static final double max = Math.pow(10,18);
  
    public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
      	int count = Integer.parseInt(sc.next());
      	double result = 1;
        for (int i=0;i<count; i::) {
          double next = Double.parseDouble(sc.next());
          result = result * next;
          if (result > max) {
            System.out.println("-1");
            return;            
          }
        }
        System.out.println(String.valueOf(result));
    }
}

Compiler output:
Main.java:10: error: <identifier> expected
        for (int i=0;i<count; i::) {
                                 ^
Main.java:10: error: not a statement
        for (int i=0;i<count; i::) {
                              ^
2 errors
Language: C++

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

  ll n;
  cin>>n;
  ll arr[n];
  for(ll i=0;i<n;i++)
  {cin>>arr[i];
    if(arr[i]==0)
    {
      cout<<0<<endl;
      exit(0);
      
      
    }

    
  }
  ll t=1;
  ll comp=pow(10,18);
  for(ll i=0;i<n;i++)
  {
    if(arr[i] <=1000000000000000000/t )
// This condition is equivalent to prod*a[i] <=10ˆ18
t*=a[i]
  else
  {
    cout<<-1<<endl;
    exit(0);
    
    
  }
    
    
  }
    cout<<t<<endl;
  
  
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:28:4: error: 'a' was not declared in this scope
   28 | t*=a[i]
      |    ^
Language: C++

#include <iostream>
#include <vector>
using namespace std;
using ll = long long;

int main()
{
    int n;
    ll ans = 1LL, a;
    cin >> n;
    for (int i = 0; i < n; i++)
    {
        cin >> a;
        if (a == 0)
        {
            cout << "0\n";
            return 0;
        }
        if (ans > LLONG_MAX / a)
        {
            cout << "-1\n";
            return 0;
        }
        ans *= a;
    }
    cout << ans << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:19: error: 'LLONG_MAX' was not declared in this scope
   19 |         if (ans > LLONG_MAX / a)
      |                   ^~~~~~~~~
a.cc:3:1: note: 'LLONG_MAX' is defined in header '<climits>'; this is probably fixable by adding '#include <climits>'
    2 | #include <vector>
  +++ |+#include <climits>
    3 | using namespace std;
Language: C

#include <stdio.h> long long a[100010]; int main (){
int n;
scanf("%d",&n);
for(int i=0;i<n;i++)scanf("%lld",&a[i]);
   int zero =0;
9
for(int i=0;i<n;i++)if(a[i]==0)zero++; if(zero >0){
// a[i] contains 0
printf("0\n");
return 0; }
long long prod =1; for(int i=0;i<n;i++){
if(a[i]<=1000000000000000000/prod){
// This condition is equivalent to prod*a[i]<=10ˆ18 prod*=a[i];
}else{ printf("-1\n");
return 0; }
}
printf("%lld\n",prod); }

Compiler output:
main.c:1:20: warning: extra tokens at end of #include directive
    1 | #include <stdio.h> long long a[100010]; int main (){
      |                    ^~~~
main.c:3:7: error: expected declaration specifiers or '...' before string constant
    3 | scanf("%d",&n);
      |       ^~~~
main.c:3:12: error: expected declaration specifiers or '...' before '&' token
    3 | scanf("%d",&n);
      |            ^
main.c:4:1: error: expected identifier or '(' before 'for'
    4 | for(int i=0;i<n;i++)scanf("%lld",&a[i]);
      | ^~~
main.c:4:14: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    4 | for(int i=0;i<n;i++)scanf("%lld",&a[i]);
      |              ^
main.c:4:18: error: expected '=', ',', ';', 'asm' or '__attribute__' before '++' token
    4 | for(int i=0;i<n;i++)scanf("%lld",&a[i]);
      |                  ^~
main.c:6:1: error: expected identifier or '(' before numeric constant
    6 | 9
      | ^
main.c:7:14: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    7 | for(int i=0;i<n;i++)if(a[i]==0)zero++; if(zero >0){
      |              ^
main.c:7:18: error: expected '=', ',', ';', 'asm' or '__attribute__' before '++' token
    7 | for(int i=0;i<n;i++)if(a[i]==0)zero++; if(zero >0){
      |                  ^~
main.c:7:40: error: expected identifier or '(' before 'if'
    7 | for(int i=0;i<n;i++)if(a[i]==0)zero++; if(zero >0){
      |                                        ^~
main.c:11:20: error: expected identifier or '(' before 'for'
   11 | long long prod =1; for(int i=0;i<n;i++){
      |                    ^~~
main.c:11:33: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
   11 | long long prod =1; for(int i=0;i<n;i++){
      |                                 ^
main.c:11:37: error: expected '=', ',', ';', 'asm' or '__attribute__' before '++' token
   11 | long long prod =1; for(int i=0;i<n;i++){
      |                                     ^~
main.c:17:8: error: expected declaration specifiers or '...' before string constant
   17 | printf("%lld\n",prod); }
      |        ^~~~~~~~
main.c:17:17: error: expected declaration specifiers or '...' before 'prod'
   17 | printf("%lld\n",prod); }
      |                 ^~~~
main.c:17:24: error: expected identifier or '(' before '}' token
   17 | printf("%lld\n",prod); }
      |                        ^
Language: C++

/*===================*\
|ID : harryPotter_421  |
|      LANG: C++       |
\*====================*/
#include <iostream>
#include<bits/stdc++.h>
#define lli unsigned long long int
#define pb push_back
#define ld  double
#define M 1000000000000000000
#define f(j,m,n) for(lli j=m;j<n;j++)
#define harry ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define forn(n) for(i=0;i<n;i++);
#define vp vector<pair<lli,lli>>
using namespace std;
//int prime[10000005];







int main()
   {lli n,a;
    lli ans=1;
    cin>>n;
    lli arr[n];
    for(lli i=0;i<n;i++)
    {
        cin>>arr[i];
    }
    sort(arr,arr+n);
    for(lli i=0;i<n;i++)
         {ans=ans*a
         if(ans>M)
            {
                cout<<-1;
                return ;
            }
         }
    
    cout<<ans;
    
    }






















Compiler output:
a.cc: In function 'int main()':
a.cc:35:20: error: expected ';' before 'if'
   35 |          {ans=ans*a
      |                    ^
      |                    ;
   36 |          if(ans>M)
      |          ~~
Language: C++

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

#define N ((ll)1e18);

int main(int argc, char const *argv[])
{
	int n;
	cin >> n;
  	ll x;
	unsigned ll ans = 0;
	for (int i = 0; i < n; ++i)
	{
		cin >> x;
		ans += x;
		if(ans > N)
		{
			ans = -1
			break;
		}
	}

	cout << ans;
	return 0;
}

Compiler output:
a.cc: In function 'int main(int, const char**)':
a.cc:12:21: error: expected initializer before 'ans'
   12 |         unsigned ll ans = 0;
      |                     ^~~
a.cc:16:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   16 |                 ans += x;
      |                 ^~~
      |                 abs
a.cc:17:27: error: expected primary-expression before ')' token
   17 |                 if(ans > N)
      |                           ^
a.cc:24:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   24 |         cout << ans;
      |                 ^~~
      |                 abs
Language: Java

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

public class TaskB {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        PrintWriter pw = new PrintWriter(new OutputStreamWriter(System.out));

        int n = Integer.parseInt(br.readLine());

        BigInteger prod = new BigInteger("1");
        StringTokenizer st = new StringTokenizer(br.readLine());

        String[] arr = new String[n];

        for (int i = 0; i < n; i++) {
            arr[i] = (st.nextToken());
            if (arr[i].equals("0")) {
                pw.println("0");
                pw.close();
                return;
            }
        }

        for (String x : arr) {
            prod = prod.multiply(new BigInteger(x));
            if (prod.compareTo(new BigInteger("1000000000000000000")) > 0) {
                pw.println("-1");
                pw.close();
                return;
            }
        }

        pw.println(prod);
        pw.close();
    }
}


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

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

public class TaskB {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        PrintWriter pw = new PrintWriter(new OutputStreamWriter(System.out));

        int n = Integer.parseInt(br.readLine());

        BigInteger prod = new BigInteger("1");
        StringTokenizer st = new StringTokenizer(br.readLine());

        String[] arr = new String[n];

        for (int i = 0; i < n; i++) {
            arr[i] = (st.nextToken());
            if (arr[i].equals("0")) {
                pw.println("0");
                pw.close();
                return;
            }
        }

        for (String x : arr) {
            prod = prod.multiply(new BigInteger(x));
            if (prod.subtract(new BigInteger("1000000000000000000")).toString().charAt(0) != '-') {
                pw.println("-1");
                pw.close();
                return;
            }
        }

        pw.println(prod);
        pw.close();
    }
}


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

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

public class TaskB {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        PrintWriter pw = new PrintWriter(new OutputStreamWriter(System.out));

        int n = Integer.parseInt(br.readLine());

        BigInteger prod = new BigInteger("1");
        StringTokenizer st = new StringTokenizer(br.readLine());

        String[] arr = new String[n];
        for (int i = 0; i < n; i++) {
            arr[i] = (st.nextToken());
        }
        Arrays.sort(arr);

        for (String x : arr) {
            prod = prod.multiply(new BigInteger(x));
            if (prod.subtract(new BigInteger("1000000000000000000")).toString().charAt(0) != '-') {
                pw.println("-1");
                pw.close();
                return;
            }
        }

        pw.println(prod);
        pw.close();
    }
}


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

import java.util.Scanner;

public class Template {

		public static void main(String[] args) {
	        Scanner sc = new Scanner(System.in);
	        int n = sc.nextInt();
            //Long[] num = new Long[n];
            Long res = 1L;
            
            
	        for(int i = 0; i<n; i++) {
              Long num =sc.nextLong();
              if(num==0){
            	  res *= 0;
            	  break;
              }else {
              if(num   <= ((long)Math.pow(10, 18))/res) {
            	res *= num;
              }else  {
            	  res = -1L;
            	  break;
              }
            }
	        }
          
	        
            System.out.println(res); 
	        
	}
}



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

import java.util.Scanner;

public class Template {

		public static void main(String[] args) {
	        Scanner sc = new Scanner(System.in);
	        int n = sc.nextInt();
            int[] num = new int[n];
            int res = 1;
	        for(int i = 0; i<n; i++) {
              num[i]=sc.nextInt();
              res = res*num[i];
            }
          
	        if(res > Math.pow(10, 18) )
	        System.out.println("-1");
            else
            System.out.println(res); 
	}
}

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

#include <iostream>
using namespace std;

#define MAX_PROD 1e18

int main() {
	long long n,p = 1,a, i;
	for(i = 0 ; i < n ; i++){
		cin>>a;
		s*=a;
	}
	if (s > MAX_PROD){
		cout<<-1;
	}
	else
		cout<<s;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:17: error: 's' was not declared in this scope
   10 |                 s*=a;
      |                 ^
a.cc:12:13: error: 's' was not declared in this scope
   12 |         if (s > MAX_PROD){
      |             ^
Language: C++

#include<bits/stdc++.h>
int main()
{
  int n;
  cin>>n;
  int arr[n];
  for(int i=0;i<n;i++)
  	cin>>arr[i];
  long long mul=1;
  for(int i=0;i<n;i++)
  {
  mul*=arr[i];
  }
  if(mul<0)
    cout<<-1;
  else
    cout<<mul;
 return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |   cin>>n;
      |   ^~~
      |   std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:15:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   15 |     cout<<-1;
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:17:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   17 |     cout<<mul;
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
//Author: Ezio Sam
/* Shorthands */
#define ll unsigned long long
#define pb push_back 
#define mp make_pair
#define sp ": "
#define cs "Case "
#define fi first
#define sn second 
#define po(x) x*x
/* STL */
#define vi vector<int>v
#define pii pair<int,int>
#define pll pair<ll,ll>
#define mem(a,n) memset(a, n, sizeof(a));
#define all(x) x.begin(),x.end()
#define sz(x)  (int)x.size()
#define mx(v)  *max_element(v.begin(),v.end())
#define mxa(a) *max_element(a, a.size())
#define r(a) reverse(a.begin(),a.end())
/* loops */
#define fr(i,n)   for(__typeof(n) i=0;i<(n);i++)
#define fn(i,n)   for(__typeof(n)i=1;i<=(n);i++)
#define fa(i,a,n) for(__typeof(a)i=(a);i<=(b);i++)
/*Special*/
#define Ezio ios::sync_with_stdio(0),cin.tie(NULL),cout.tie(NULL);
#define db(something)   cerr<<#something<<" - "<<something<<"\n";         
int main()
{
  
   Ezio
   /*Variables*/
   /*Code*/
   ll n,x;
   vector<ll>v;
   ll ans=1;
   const ll m=1e18;
   int i;
   cin>>n;
   
   fr(i,n){
     cin>>x;
     v.pb(x);
   }
   
   sort(all(v));
   
   fr(i,n){
     if(ans<=m/v[i];)
     ans*=v[i];
     
     else{
       cout<<"-1"<<endl;
       return 0;
       }
   }
     
   cout<<ans<<endl;
   return 0;
}
    

Compiler output:
a.cc: In function 'int main()':
a.cc:51:21: error: expected primary-expression before ')' token
   51 |      if(ans<=m/v[i];)
      |                     ^
Language: C++

#include<bits/stdc++.h>
using namepsace std;
int main(){
  long long int n,x,m=1,p;
  cin>>n;
  while(n--){
    cin>>x;
    m*=x;
    }
  p=(m>1000000000000000000)? -1 : m;
  cout<<p<<endl;
  return 0;}

Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'namepsace'
    2 | using namepsace std;
      |       ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |   cin>>n;
      |   ^~~
      |   std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:11:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   11 |   cout<<p<<endl;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:11:12: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   11 |   cout<<p<<endl;
      |            ^~~~
      |            std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define FAST ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define sz(a) signed(a.size())
using namespace std;

void solve(){
	ll n;
	cin >> n;
	ll m = 1e18;
	ll prod = 1;
	for(ll i=1;i<=n;i++){
		cin >> a;
		if (a > max/prod){
			cout << -1; 
			exit(0);
		}
		prod *= a;
	}
	cout << prod;
}

int main() {
    FAST;
    ll t=1;
    //cin>>t;
    while(t--) solve();	
    return 0;
}



Compiler output:
a.cc: In function 'void solve()':
a.cc:14:24: error: 'a' was not declared in this scope
   14 |                 cin >> a;
      |                        ^
a.cc:15:28: error: invalid operands of types '<unresolved overloaded function type>' and 'long long int' to binary 'operator/'
   15 |                 if (a > max/prod){
      |                         ~~~^~~~~
Language: C++

#include <stdio.h>

using namespace std;

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

    long long a[ n ];
    int zero = 0;

    for( int i = 0; i < n; i++ )
    {
        cin >> a[ i ];
        if( a[ i ] == 0 )
        {
            zero++;
            break;
        }
    }
    if( zero )
    {
        cout << 0 << "\n";
    }
    else{
    long long prod = 1;

    for( int i = 0; i < n; i++ )
    {
        if( a[ i ] <= 1000000000000000000 / prod )
        {
            prod *= a[ i ];
        }
        else
        {
            prod = -1;
            break;
        }
    }

    cout << prod << "\n";
    }

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:5: error: 'cin' was not declared in this scope
    8 |     cin >> n;
      |     ^~~
a.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    1 | #include <stdio.h>
  +++ |+#include <iostream>
    2 | 
a.cc:24:9: error: 'cout' was not declared in this scope
   24 |         cout << 0 << "\n";
      |         ^~~~
a.cc:24:9: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:42:5: error: 'cout' was not declared in this scope
   42 |     cout << prod << "\n";
      |     ^~~~
a.cc:42:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
Language: C++

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

#define     For(i,a,b)      for(i=a;i<b;++i) 
#define     rec(j,a,b)      for(j=a;j<b;++j)
#define     F               first
#define     S               second
#define     pb              push_back
#define     mp              make_pair
#define     ll              long long
#define     V               vector
#define     M               map
#define     st              string
#define     ii              pair<int,int>
#define     IOS             ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define     endl            "\n"

ll int i ,j;

int main()
{
    IOS
    int n , f=0;
    cin >> n;
    ll int ar[n] , count=1 , d=1e18;
    For(i , 0 , n)
    {
        cin>>ar[i];
        if(ar[i]==0)
        f=1;
    }
    if(f==1)cout<<"0";
    else
    {
        rec(j , 0 , n)
        {
            count*=ar[j];
            if(count>d)
            {
                f=1;
                break;
            }
        }
        if(f)
        cout<<"-1";
        else
        cout<<count;
        }
    }
    
    
    return 0;
    
}









Compiler output:
a.cc:52:5: error: expected unqualified-id before 'return'
   52 |     return 0;
      |     ^~~~~~
a.cc:54:1: error: expected declaration before '}' token
   54 | }
      | ^
Language: C++

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

int main() {
  int N;cin>>N;
  vector<int> vec(N);
  for(int i=0;i<N;i++){
    cin>>vec.at(i);
  }
  int64_t X=1;
  int64_t Y;
  for(int j=0;j<N;j++){
    if(X<=1000000000000000000){
      Y=X*vec.at(j);
      X=Y;
    }
    else{
      Y=-1;
      break;
    }
  }
  int z=0;
  for(int k=0; k<N;k++){
    if(vec.at(k)==0){
      z++;
      break;
    }
    else{
      continue;
    }
  }
  if(0<=Y && Y<=1000000000000000000){
    cout<<Y<<endl;
  }
  else if(z=1)
    cout<<"0"<<endl;
  }
  else{
    cout<<"-1"<<endl;
  }
}


Compiler output:
a.cc:38:3: error: expected unqualified-id before 'else'
   38 |   else{
      |   ^~~~
a.cc:41:1: error: expected declaration before '}' token
   41 | }
      | ^
Language: C++

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

int main() {
  vector<int> vec(N);
  for(int i=0;i<N;i++){
    cin>>vec.at(i);
  }
  int X=vec.at(0);
  for(int j=1;j<N;j++){
    if(X<=1000000000000000000){
      Y=X*vec.at(j);
      X=Y;
    }
    else{
      Y=-1;
      break;
    }
  }
  if(0<=Y && Y<=1000000000000000000){
    cout<<Y<<endl;
  }
  else{
    cout<<"-1"<<endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:19: error: 'N' was not declared in this scope
    5 |   vector<int> vec(N);
      |                   ^
a.cc:12:7: error: 'Y' was not declared in this scope
   12 |       Y=X*vec.at(j);
      |       ^
a.cc:16:7: error: 'Y' was not declared in this scope
   16 |       Y=-1;
      |       ^
a.cc:20:9: error: 'Y' was not declared in this scope
   20 |   if(0<=Y && Y<=1000000000000000000){
      |         ^
Language: C++

#include <bits/stdc++.h>
typedef unsigned long long ll;
#define fr(i,a,b) for(ll i=a; i<b; i++)
#define rf(i,a,b) for(ll i=a; i>=b; i--)
typedef std::vector<long long > vi ;
#define F first
#define S second
#define fast ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define mod 998244353
#define PB push_back
#define MP make_pair
#define PI 3.14159265358979323846
#define all(a) a.begin(),a.end()
#define mx(a) *max_element(all(a))
#define mn(a) *min_element(all(a))
#define endl '\n'
#define show(a) for(auto el:a)cout<<el<<" "
#define yesno(f) yes(f);no(f);
#define yes(f) if(f)cout<<"YES\n";
#define no(f) if(!f)cout<<"NO\n";
using  namespace std;
int main()
{
    fast;
    ll t;
    t=1;
    while(t--)
    {
        ll n,i,j,k=0;
        std::cin >> n;
        ll a[n],ans=1;
        fr(i,0,n)
        std::cin >> a[i];
        sort(a,a+n);
        fr(i,0,n)
        {
            ans*=a[i];
            if(ans>1000000000000000000)
            {
                cout<<"-1";
                k=1;
                break;
            }
        }
        if(k==0)
        cout<<ans;
    }
}#include <bits/stdc++.h>
typedef unsigned long long ll;
#define fr(i,a,b) for(ll i=a; i<b; i++)
#define rf(i,a,b) for(ll i=a; i>=b; i--)
typedef std::vector<long long > vi ;
#define F first
#define S second
#define fast ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define mod 998244353
#define PB push_back
#define MP make_pair
#define PI 3.14159265358979323846
#define all(a) a.begin(),a.end()
#define mx(a) *max_element(all(a))
#define mn(a) *min_element(all(a))
#define endl '\n'
#define show(a) for(auto el:a)cout<<el<<" "
#define yesno(f) yes(f);no(f);
#define yes(f) if(f)cout<<"YES\n";
#define no(f) if(!f)cout<<"NO\n";
using  namespace std;
int main()
{
    fast;
    ll t;
    t=1;
    while(t--)
    {
        ll n,i,j,k=0;
        std::cin >> n;
        ll a[n],ans=1;
        fr(i,0,n)
        std::cin >> a[i];
        sort(a,a+n);
        fr(i,0,n)
        {
            ans*=a[i];
            if(ans>1000000000000000000)
            {
                cout<<"-1";
                k=1;
                break;
            }
        }
        if(k==0)
        cout<<ans;
    }
}

Compiler output:
a.cc:48:2: error: stray '#' in program
   48 | }#include <bits/stdc++.h>
      |  ^
a.cc:48:3: error: 'include' does not name a type
   48 | }#include <bits/stdc++.h>
      |   ^~~~~~~
a.cc:69:5: error: redefinition of 'int main()'
   69 | int main()
      |     ^~~~
a.cc:22:5: note: 'int main()' previously defined here
   22 | int main()
      |     ^~~~
Language: C++

                                      // Believe in yourself
#include<bits/stdc++.h>

using namespace std;

typedef unsigned long long int ull;
typedef long long int ll;
typedef long double ld;

#define PB push_back
#define MP make_pair
#define F first
#define S second
#define Pair vector<pair<ll,ll>>
#define vec vector <ll> 
#define all(a) a.begin(),a.end()
#define mo 1000000007
#define decimal(i,n) fixed << setprecision(i) << n
#define show(a) for(auto xyz:a)cout<<xyz<<" ";cout<<endl;
#define show_nl(a) for(auto xyz:a)cout<<xyz<<endl;


void eea(ll a,ll b,ll &x,ll &y)
{
    if (a == 1)
    {
        x = 1; y = 0;
        return;
    }
    ll x1, y1;
    eea(b%a,a,x1,y1);
    x=y1-(b/a)*x1;
    y=x1;
}
ll mi(ll a,ll m)
{
    ll x,y;
    eea(a,m,x,y);
    x= (x%m+m)%m;
    return x;
}

/*
Enter the test case


Some helpful points
1.) Calm yourself
2.) check for semicolon or data type mismatch
*/

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);    
    ll t=1;
    // cin>>t;
    while(t--)
    {
       ll n,x=0;
       cin>>n;
       ll a[n],s=1;
       for(int i=0;i<n;i++)
       {
           cin>>a[i];
           if(a[i]*s>pow(10,18))
           x=1;
           else
           s=s*a[i];
           if(a[i]==0)
           {
               s=0;
               x=0;
           }
       }
       if(x==1)
       cout<<-1<<"\n";
       else'
       cout<<s<<"\n";
    }
}



Compiler output:
a.cc:78:12: warning: missing terminating ' character
   78 |        else'
      |            ^
a.cc:78:12: error: missing terminating ' character
Language: C++

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

signed main(){
  int N;
  cin >> N;
  vector<unsigned long long int>A(N);
  for(int i=0;i<N;i++){
    cin >> A[i];
    if(i==0){
      ans=A[0];
      continue;
    }
    ans*=A[i];
  }
  if(ans>1000000000000000000){
    cout << -1 << endl;
  }
  else{
    cout << ans << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:7: error: 'ans' was not declared in this scope; did you mean 'abs'?
   11 |       ans=A[0];
      |       ^~~
      |       abs
a.cc:14:5: error: 'ans' was not declared in this scope; did you mean 'abs'?
   14 |     ans*=A[i];
      |     ^~~
      |     abs
a.cc:16:6: error: 'ans' was not declared in this scope; did you mean 'abs'?
   16 |   if(ans>1000000000000000000){
      |      ^~~
      |      abs
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
   int n,i,flag=1,cnt=0;
   cin >> n;
   
   unsigned long long int ar[n],pro=1,k=1000000000000000000;
   
   
   for(i=0;i<n;i++)
   {
       cin >> ar[i];
       
       if(ar[i]==0)
       cnt++;
   }
   
   if(cnt==0)
   {
       for(i=0;i<n;i++)
       {
       
           if(ar[i]<k/pro)  //this is same as pro>10^18
           {
              pro = (pro*ar[i]);
           }
         else
         {
           flag=0
           break;
         }
        }
   }
   
   if(flag==0)
   cout << "-1";
   else
   if(cnt!=0)
   cout << "0";
   else
   cout << pro;
   
}

Compiler output:
a.cc: In function 'int main()':
a.cc:30:18: error: expected ';' before 'break'
   30 |            flag=0
      |                  ^
      |                  ;
   31 |            break;
      |            ~~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
   int n,i,flag=1,cnt=0;
   cin >> n;
   
   unsigned long long int ar[n],pro=1,k=1000000000000000000;
   
   
   for(i=0;i<n;i++)
   {
       cin >> ar[i];
       
       if(ar[i]==0)
       cnt++;
   }
   
   if(cnt==0)
   {
       for(i=0;i<n;i++)
       {
           pro = (pro*ar[i]);
       
           if(a[i]<k/pro)  //this is same as pro>10^18
           {
               flag=0;
               break;
           }
        }
   }
   
   if(flag==0)
   cout << "-1";
   else
   if(cnt!=0)
   cout << "0";
   else
   cout << pro;
   
}

Compiler output:
a.cc: In function 'int main()':
a.cc:25:15: error: 'a' was not declared in this scope
   25 |            if(a[i]<k/pro)  //this is same as pro>10^18
      |               ^
Language: C++

    #include <iostream>
    #include<cmath>
    #include<string>
    using namespace std;
    int main()
    {
         long long int t,pro=1;
      cin>>t;
      for(int i=0;i<t;i++)
      {
        int y;
        cin>>y;
        pro=pro*y;
      }
      if(pro>pow(10,18)
         {
           cout<<"-1";
         }
         else
         cout<<pro;
         
        
    }

Compiler output:
a.cc: In function 'int main()':
a.cc:15:24: error: expected ';' before '{' token
   15 |       if(pro>pow(10,18)
      |                        ^
      |                        ;
   16 |          {
      |          ~              
a.cc:19:10: error: expected primary-expression before 'else'
   19 |          else
      |          ^~~~
a.cc:18:11: error: expected ')' before 'else'
   18 |          }
      |           ^
      |           )
   19 |          else
      |          ~~~~
a.cc:15:9: note: to match this '('
   15 |       if(pro>pow(10,18)
      |         ^
Language: C++

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

	long long a, ans = 1;
	int flag = 0;
	for (int i = 0; i < n; i++)
	{
		cin >> a;
	if (a > 1000000000000000000 / ans ) {
		flag = 1;
	}
		ans *= a;
	}
	if ((flag == 1) && (ans != 0)) ans = -1;
	cout << ans << endl;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:3:9: error: 'cin' was not declared in this scope
    3 |         cin >> n;
      |         ^~~
a.cc:16:9: error: 'cout' was not declared in this scope
   16 |         cout << ans << endl;
      |         ^~~~
a.cc:16:24: error: 'endl' was not declared in this scope
   16 |         cout << ans << endl;
      |                        ^~~~
Language: C++

#include<bits/stdc++.h>
#define ll long long int
#define pb() push_back()
#define INF 1000000000
using namespace std;
const ll num = 1e9;
const int mod = 1e9+7;

int digit((ll k){
	int n = 0;
	
	while(k){
		k/= 10;
		n++;
	}
	return n;
}
int main(){
	ll x,y;
	cin>>x>>y;
	int xd = digit(x), yd = digit(y);
	if(xd + yd >= 18) cout<<-1;
	else cout<<x*y<<endl; 
	
		return 0;
}


Compiler output:
a.cc:2:12: error: expected primary-expression before 'long'
    2 | #define ll long long int
      |            ^~~~
a.cc:9:12: note: in expansion of macro 'll'
    9 | int digit((ll k){
      |            ^~
a.cc:9:12: error: expected ')' before 'long'
    9 | int digit((ll k){
      |           ~^
      |            )
Language: Java

import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
      Scanner in = new Scanner(System.in);
      int n = in.nextInt();
      long a = in.nextLong();
      int b = 0;
      int zero = 0;
      int over = -1;
      long prod = 1;
      
      for(int i=0;i<n-1; i++){
        if(a<=1000000000000000000/prod){
          System.out.println(over);
        }else{
          b = in.nextInt();
       	  a = a*b;
        }
      }
      System.out.println(a);
    }
}

Compiler output:
Main.java:14: error: integer number too large
        if(a<=1000000000000000000/prod){
              ^
1 error
Language: Java

import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
      Scanner in = new Scanner(System.in);
      int n = in.nextInt();
      long a = in.nextLong();
      int b = 0;
      int zero = 0;
      int over = -1;
      long prod = 1;
      
      for(int i=0;i<n-1; i++){
        if(a>=1000000000000000000/prod){
          System.out.println(over);
        }else{
          b = in.nextInt();
       	  a = a*b;
        }
      }
      System.out.println(a);
    }
}

Compiler output:
Main.java:14: error: integer number too large
        if(a>=1000000000000000000/prod){
              ^
1 error
Language: Java

import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
      Scanner in = new Scanner(System.in);
      int n = in.nextInt();
      long a = in.nextLong();
      int b = 0;
      int over = -1;
      long prod = 1;
      
      for(int i=0;i<n-1; i++){
        if(a>=1000000000000/prod){
          System.out.println(over);
        }else{
          b = in.nextInt();
       	  a = a*b;
        }
      }
      System.out.println(a);
    }
}

Compiler output:
Main.java:13: error: integer number too large
        if(a>=1000000000000/prod){
              ^
1 error
Language: Java

import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
      Scanner in = new Scanner(System.in);
      int n = in.nextInt();
      int a = in.nextInt();
      int b = 0;
      int over = -1;
      long prod = 1;
      
      for(int i=0;i<n-1; i++){
        if(a>=10000000000000/prod){
          System.out.println(over);
        }else{
          b = in.nextInt();
       	  a = a*b;
        }
      }
      System.out.println(a);
    }
}

Compiler output:
Main.java:13: error: integer number too large
        if(a>=10000000000000/prod){
              ^
1 error
Language: Java

import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
      Scanner in = new Scanner(System.in);
      int n = in.nextInt();
      int a = in.nextInt();
      int b = 0;
      int over = -1;
      long prod = 1;
      
      for(int i=0;i<n-1; i++){
        if(a>=100000000000000000*10){
          System.out.println(over);
        }else{
          b = in.nextInt();
       	  a = a*b;
        }
      }
      System.out.println(a);
    }
}

Compiler output:
Main.java:13: error: integer number too large
        if(a>=100000000000000000*10){
              ^
1 error
Language: Java

import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
      Scanner in = new Scanner(System.in);
      int n = in.nextInt();
      int a = in.nextInt();
      int b = 0;
      int over = -1;
      long prod = 1;
      
      for(int i=0;i<n-1; i++){
        if(a>=1000000000000000000/prod){
          System.out.println(over);
        }else{
          b = in.nextInt();
       	  a = a*b;
        }
      }
      System.out.println(a);
    }
}

Compiler output:
Main.java:13: error: integer number too large
        if(a>=1000000000000000000/prod){
              ^
1 error
Language: Java

import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
      Scanner in = new Scanner(System.in);
      int n = in.nextInt();
      int a = in.nextInt();
      int b = 0;
      int over = -1;
      
      for(int i=0;i<n-1; i++){
        if(a>999999999999999999){
          System.out.println(over);
        }else{
          b = in.nextInt();
       	  a = a*b;
        }
      }
      System.out.println(a);
    }
}

Compiler output:
Main.java:12: error: integer number too large
        if(a>999999999999999999){
             ^
1 error
Language: Java

import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
      Scanner in = new Scanner(System.in);
      int n = in.nextInt();
      int a = in.nextInt();
      int b = 0;
      int over = -1;
      
      for(int i=0;i<n-1; i++){
        if(a>1000000000000000000){
          System.out.println(over);
        }else{
          b = in.nextInt();
       	  a = a*b;
        }
      }
      System.out.println(a);
    }
}

Compiler output:
Main.java:12: error: integer number too large
        if(a>1000000000000000000){
             ^
1 error
Language: Java

import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
      Scanner in = new Scanner(System.in);
      int n = in.nextInt();
      int a = in.nextInt();
      int b = 0;
      int over = -1;
      
      for(int i=0;i<n-1; i++){
        if(a>=1000000000000000000){
          System.out.println(over);
        }else{
          b = in.nextInt();
       	  a = a*b;
        }
      }
      System.out.println(a);
    }
}

Compiler output:
Main.java:12: error: integer number too large
        if(a>=1000000000000000000){
              ^
1 error
Language: Java

import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
      Scanner in = new Scanner(System.in);
      int n = in.nextInt();
      int a = in.nextInt();
      int b = 0;
      int over = -1;
      
      for(int i=0;i<n-1; i++){
         b = in.nextInt();
       	 a = a*b;
        if(a>=1000000000000000000){
          System.out.println(over);
        }
      }
      System.out.println(a);
    }
}

Compiler output:
Main.java:14: error: integer number too large
        if(a>=1000000000000000000){
              ^
1 error
Language: C

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define GET_ARRAY_SIZE(a)   (sizeof(a)/sizeof(a[0]))
#define LL long long
LL facctorialMethod(int k);
int main(){
    LL n,a,sum;
    cin >> n ;
    vector<LL> array_a(n);

    for(int i = 0; i < n; i++) {
        cin >> a;
        array_a[i] =  a;
    }
    sort(array_a.begin(),array_a.end());
    sum = 1;
    for(int i = 0; i < n; i++) {
        sum *= array_a[i];
        if(sum > 1000000000000000000) {
            cout << -1 << endl;
            return 0;
        }
    }


    cout << sum << endl;

    return 0;
}

LL facctorialMethod(int k){
    int sum = 1;
    for (int i = 1; i <= k; ++i){
        sum *= i;
    }
    return sum;
}


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.*;
import java.io.*;
import java.lang.*;

public class ABC169B {
	public static void main (String[] args) {
		Scanner sc = new Scanner(System.in);
		int t = sc.nextInt();
		long[] arr = new long[t];
		long product = 1L; long upperLimit = 1000000000000000000L;
		while(t-- > 0) {
			arr[t] = sc.nextLong();
			product*=arr[t];
			if (arr[t] == 0) {
				break;
			} 
		}
		System.out.println(product < upperLimit ? product : "-1" );
	}
}


Compiler output:
Main.java:5: error: class ABC169B is public, should be declared in a file named ABC169B.java
public class ABC169B {
       ^
1 error
Language: Java

import java.util.*;
import java.io.*;
import java.lang.*;

public class ABC169B {
	public static void main (String[] args) {
		Scanner sc = new Scanner(System.in);
		int t = sc.nextInt();
		long[] arr = new long[t];
		long product = 1; long upperLimit = 1000000000000000000l;
		while(t-- > 0) {
			arr[t] = sc.nextLong();
			product*=arr[t];
			if (arr[t] == 0) {
				break;
			} 
		}
		System.out.println(product < upperLimit ? product : "-1" );
	}
}


Compiler output:
Main.java:5: error: class ABC169B is public, should be declared in a file named ABC169B.java
public class ABC169B {
       ^
1 error
Language: C++

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

int main()
{
    int n;
    cin>>n;
    vector<ll> a;
    ll ans=1;
    bool flag=true;
    for(int i=0;i<n;i++){
        ll b;cin>>b;a.push_back(b);
        if(b==0){
          cout<0<<endl;
          return 0;
        }
    }
    sort(a.begin(),a.end());
    for(int i=0;i<n;i++){
        if(a[i]>1000000000000000000/ans){
            flag=false;
            break;
        }
        ans*=a[i];
    }
    if(flag){
        cout<<ans<<endl;
    }else{
        cout<<-1<<endl;
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:17: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
   15 |           cout<0<<endl;
      |                ~^~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
long long a [100010];
int main (){
int n;
scanf("%d",&n);
for(int i=0;i<n;i++) scanf("%lld",&a[i]);
int zero =0;
9
for(int i=0;i<n;i++)if(a[i]==0) zero ++;
if(zero >0){
// a[i] contains 0
printf("0\n");
return 0;
}
long long prod =1;
for(int i=0;i<n;i++){
if(a[i ] <=1000000000000000000/ prod ){
// This condition is equivalent to prod*a[i] <=10ˆ18
prod *=a[i];
}else{
printf("-1\n");
return 0;
}
}
printf("%lld\n",prod );
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:2: error: expected ';' before 'for'
    9 | 9
      |  ^
      |  ;
   10 | for(int i=0;i<n;i++)if(a[i]==0) zero ++;
      | ~~~
a.cc:10:13: error: 'i' was not declared in this scope
   10 | for(int i=0;i<n;i++)if(a[i]==0) zero ++;
      |             ^
Language: C++

#include <bits/stdc++.h>
#include <math.h>//pow(x,y)=x^y
#include <algorithm>//sort(a.begin(), a.end());reverse(a.begin(), a.end());
#define rep(i,n) for (int i=0; i <(n);i++)
#define ll long long
using namespace std;


int main() {
int N,zero;
cin >> N;
vector<ll> A(N);
ll B=1;
rep(i,N){
cin >> A.at(i);
}

rep(i,N){
	B *= A.at(i);
}
zero = 0;
rep(i,N){
	if(A.at(i)==0) zero=1;
}

if({)zero==1){
if(B>pow(10,18)){
	cout << -1 <<endl;
}else{
	cout << B <<endl;
}
}else{
	B=0;
	cout << B <<endl;
}
}


Compiler output:
a.cc: In function 'int main()':
a.cc:26:4: error: expected primary-expression before '{' token
   26 | if({)zero==1){
      |    ^
a.cc:26:4: error: expected ')' before '{' token
   26 | if({)zero==1){
      |   ~^
      |    )
a.cc:36:2: error: expected statement at end of input
   36 | }
      |  ^
a.cc:36:2: error: expected '}' at end of input
a.cc:9:12: note: to match this '{'
    9 | int main() {
      |            ^