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

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

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

int n;
cin >> n;
ll t;
ld ans = 1;
for (int i = 0; i < n; i++)
{
    cin >> t;
    if (ans != -1)
       ans *= t;
    if (ans > 1000000000000000000 || ans < 0)
       ans = -1;
    if (t == 0)
       ans = 0;
}
cout << (ll)ans;
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:1: error: 'ld' was not declared in this scope; did you mean 'll'?
   10 | ld ans = 1;
      | ^~
      | ll
a.cc:14:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   14 |     if (ans != -1)
      |         ^~~
      |         abs
a.cc:16:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   16 |     if (ans > 1000000000000000000 || ans < 0)
      |         ^~~
      |         abs
a.cc:19:8: error: 'ans' was not declared in this scope; did you mean 'abs'?
   19 |        ans = 0;
      |        ^~~
      |        abs
a.cc:21:13: error: 'ans' was not declared in this scope; did you mean 'abs'?
   21 | cout << (ll)ans;
      |             ^~~
      |             abs
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main() {

	// your code goes here	int n;

	cin>>n;

	long long arr[n];

	long long mult=1;

	for(int i=0;i<n;i++){

		cin>>arr[i];

		if(arr[i]==0){

			cout<<0;

			return 0;

		}

	}

	sort(arr,arr+n);

	for(int i=0;i<n;i++){

		

		mult=mult*arr[i];

		if(mult>1e18){

			cout<<-1;

			

   return 0;

		}

	}

	cout<<mult;

	return 0;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:14: error: 'n' was not declared in this scope; did you mean 'yn'?
    9 |         cin>>n;
      |              ^
      |              yn
a.cc:17:22: error: 'arr' was not declared in this scope
   17 |                 cin>>arr[i];
      |                      ^~~
a.cc:29:14: error: 'arr' was not declared in this scope
   29 |         sort(arr,arr+n);
      |              ^~~
Language: C++

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

int n;
cin >> n;
ll t;
ld ans = 1;
for (int i = 0; i < n; i++)
{
    cin >> t;
    if (ans != -1)
       ans *= t;
    if (ans > 1000000000000000000 || ans < 0)
       ans = -1;
    if (t == 0)
       ans = 0;
}
cout << (ll)ans;
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:1:14: error: 'ios_base' has not been declared
    1 | int main() { ios_base::sync_with_stdio(false); cin.tie(0);
      |              ^~~~~~~~
a.cc:1:48: error: 'cin' was not declared in this scope
    1 | int main() { ios_base::sync_with_stdio(false); cin.tie(0);
      |                                                ^~~
a.cc:5:1: error: 'll' was not declared in this scope
    5 | ll t;
      | ^~
a.cc:6:1: error: 'ld' was not declared in this scope
    6 | ld ans = 1;
      | ^~
a.cc:9:12: error: 't' was not declared in this scope
    9 |     cin >> t;
      |            ^
a.cc:10:9: error: 'ans' was not declared in this scope
   10 |     if (ans != -1)
      |         ^~~
a.cc:12:9: error: 'ans' was not declared in this scope
   12 |     if (ans > 1000000000000000000 || ans < 0)
      |         ^~~
a.cc:15:8: error: 'ans' was not declared in this scope
   15 |        ans = 0;
      |        ^~~
a.cc:17:1: error: 'cout' was not declared in this scope
   17 | cout << (ll)ans;
      | ^~~~
Language: C

#include <bits/stdc++.h>

using namespace std;

int main() {

	// your code goes here	int n;

	cin>>n;

	long long arr[n];

	long long mult=1;

	for(int i=0;i<n;i++){

		cin>>arr[i];

		if(arr[i]==0){

			cout<<0;

			return 0;

		}

	}

	sort(arr,arr+n);

	for(int i=0;i<n;i++){

		

		mult=mult*arr[i];

		if(mult>1e18){

			cout<<-1;

			
   return 0;

		}

	}

	cout<<mult;

	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: C

#include<stdio.h>
int main()
{
    int n;
    long long int r;
    r=1;
    scanf("%d", &n);
    long long int a[100005];
    for(int i=0;i<n;i++){
        scanf("%lld", &a[i]);
        if(a[i]==0){
            printf("0");
            return 0;
        }
    }
    for(int j=0;j<n;j++){
        long long int tmp;
        tmp=r*a[j];
        //10^18より大きくなる場合
//        if(r>tmp||tmp>1000000000000000000){//こっちでも通る
        if(a[i]>1000000000000000000/r){
            printf("-1");
            return 0;
        }
        r=tmp;
    }
    printf("%lld",r);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:21:14: error: 'i' undeclared (first use in this function)
   21 |         if(a[i]>1000000000000000000/r){
      |              ^
main.c:21:14: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>
int main()
{
    int n;
    long long int r;
    r=1;
    scanf("%d", &n);
    long long int a[100005];
    for(int i=0;i<n;i++){
        scanf("%lld", &a[i]);
        if(a[i]==0){
            printf("0");
            return 0;
        }
    }
    for(int j=0;j<n;j++){
        long long int tmp;
        tmp=r*a[j];
        //10^18より大きくなる場合
//        if(r>tmp||tmp>1000000000000000000){//こっちでも通る
        if(a[i]>1000000000000000000/r)
            printf("-1");
            return 0;
        }
        r=tmp;
    }
    printf("%lld",r);
    return 0;
}


Compiler output:
main.c: In function 'main':
main.c:21:14: error: 'i' undeclared (first use in this function)
   21 |         if(a[i]>1000000000000000000/r)
      |              ^
main.c:21:14: note: each undeclared identifier is reported only once for each function it appears in
main.c:25:11: error: 'tmp' undeclared (first use in this function)
   25 |         r=tmp;
      |           ^~~
main.c: At top level:
main.c:27:12: error: expected declaration specifiers or '...' before string constant
   27 |     printf("%lld",r);
      |            ^~~~~~
main.c:27:19: error: unknown type name 'r'
   27 |     printf("%lld",r);
      |                   ^
main.c:28:5: error: expected identifier or '(' before 'return'
   28 |     return 0;
      |     ^~~~~~
main.c:29:1: error: expected identifier or '(' before '}' token
   29 | }
      | ^
Language: C

#include<stdio.h>
#include<stdlib.h>
#include<stdint.h>
#include<inttypes.h>
int main(void){
    uint_fast16_t n;
    scanf("%" SCNuFAST16 "",&n);
    uint_fast64_t a[n]
    for(uint_fast16_t i=0;i<n;i++){
        scanf("%" SCNuFAST64 "",&a[i]);
        a[i]?:puts("0\n"),exit(0);
    }
    uint_fast64_t p=1;
    for(uint_fast16_t i=0;i<n;i++)a[i]>UINT_FAST64_MAX/p?puts("-1\n"),exit(0):p*=a[i];
    p>1000000000000000000?puts("-1\n"):printf("%" PRIuFAST64 "\n",p);
    exit(0);
}

Compiler output:
main.c: In function 'main':
main.c:9:5: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'for'
    9 |     for(uint_fast16_t i=0;i<n;i++){
      |     ^~~
main.c:10:34: error: 'a' undeclared (first use in this function)
   10 |         scanf("%" SCNuFAST64 "",&a[i]);
      |                                  ^
main.c:10:34: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include <string>
#include <iostream>
#include <vector>
#include <string>
#include <utility>
#include <algorithm>
#include <math.h>
 
using namespace std;
int main() {
    cin.tie(0);
       ios::sync_with_stdio(false);
 
    int x;
    unsigned long long y = 1;
    int z = -1;
    unsigned long long p = 1000000000000000000;
    cin >> x;
    vector<unsigned long long> vec(x);
    for(int i=0; i<x;i++){
      cin >> vec.at(i);
    }
    for(int i=0; i<x;i++){
      if(vec.at(i)==0){
        cout << 0;
        return 0;
      }else if(vec.at(i)>p){
        cout << z;
        return 0;
      }
    }
    for(int i=0; i<x;i++){
     
      if(y>p/vex.at(i)){
        cout << z;
        return 0;
      }

y = y*vec.at(i);

    }
  
    
    if(y > p){
      cout << z;
    }else{
      cout << y;
    }
  
   return 0;
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:34:14: error: 'vex' was not declared in this scope; did you mean 'vec'?
   34 |       if(y>p/vex.at(i)){
      |              ^~~
      |              vec
Language: C++

#include <iostream>
#include <algorithm>
#include <cmath>
#include <queue>
#include <set>
#include <map>
#include <vector>
#include <string>
#include <iomanip>
#define f(i,a,b) for(ll i=a;i<b;i++)
#define r(i,a,b) for(ll i=a;i>b;i--)
using namespace std;
typedef long long ll;
typedef long double ld;

int main(){

ll n; cin>>n;
vector <ll> v(n);

f(i,0,n){
  cin>>v[i];

}

ll count=1;
f(i,0,n){
  count*=v[i];
}

if(count=<1e18){
  cout << count << endl;
}else{
  cout << "-1" << endl;
}

}

Compiler output:
a.cc: In function 'int main()':
a.cc:31:10: error: expected primary-expression before '<' token
   31 | if(count=<1e18){
      |          ^
Language: C++

#include<bits/stdc++.h>
#defien ll long long
using namespace std;
int main ()
{
  ll n,i,j,c=1;
  cin>>n;
  vector<ll> v;
  for(i=0;i<n;i++)
  {
    ll k; cin>>k; v.push_back(k);}
  for(i=0;i<n;i++)
  {
    c=c*v[i];
  }
  if(c<pow(10,18))
  {
    cout<<c;}
  else
  {
    cout<<"-1";}
  return 0;}

Compiler output:
a.cc:2:2: error: invalid preprocessing directive #defien; did you mean #define?
    2 | #defien ll long long
      |  ^~~~~~
      |  define
a.cc: In function 'int main()':
a.cc:6:3: error: 'll' was not declared in this scope
    6 |   ll n,i,j,c=1;
      |   ^~
a.cc:7:8: error: 'n' was not declared in this scope; did you mean 'yn'?
    7 |   cin>>n;
      |        ^
      |        yn
a.cc:8:12: error: template argument 2 is invalid
    8 |   vector<ll> v;
      |            ^
a.cc:9:7: error: 'i' was not declared in this scope
    9 |   for(i=0;i<n;i++)
      |       ^
a.cc:11:7: error: expected ';' before 'k'
   11 |     ll k; cin>>k; v.push_back(k);}
      |       ^~
      |       ;
a.cc:11:16: error: 'k' was not declared in this scope
   11 |     ll k; cin>>k; v.push_back(k);}
      |                ^
a.cc:11:21: error: request for member 'push_back' in 'v', which is of non-class type 'int'
   11 |     ll k; cin>>k; v.push_back(k);}
      |                     ^~~~~~~~~
a.cc:12:7: error: 'i' was not declared in this scope
   12 |   for(i=0;i<n;i++)
      |       ^
a.cc:14:5: error: 'c' was not declared in this scope
   14 |     c=c*v[i];
      |     ^
a.cc:16:6: error: 'c' was not declared in this scope
   16 |   if(c<pow(10,18))
      |      ^
Language: C++

#include <iostream>
#include <string>
using namespace std;

int main() {
	int n;
	cin >> n;
	long double a[n];
	long double b = 1;
	bool t = false;
	for(int i = 0; i < n; i++) {
		cin >> a[i];
		if (a[i] == 0) {
			t = true;
			break;
		}
		b *= a[i];
	}
	if (t) {
		b = 0;
	}
	if (b > pow(10, 18)) {
		b = -1;
	}
	cout << b << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:17: error: 'pow' was not declared in this scope
   22 |         if (b > pow(10, 18)) {
      |                 ^~~
Language: C

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define repbtw(i, a, b) for (int i = a; i <= (int)(b); i++)
#define all(v) v.begin(), v.end()
#define pr(x) cout << x << endl


int main()
{
    int64_t n;
    cin >> n;

    int64_t mul = 1;
    int64_t a_in;
    rep(i, n){
        cin >> a_in;
        if(a_in == 0){
            pr(0);
            return 0;
        }

        if(a_in > 1000000000000000000 / mul){
            pr(-1);
            return 0;
        }
        mul *= a_in;

    }

    pr(mul);
    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: C++

#include <bits/stdc++.h>
using namespace std;
ll lim=1e18;
int main() {
 fast
 int n;cin>>n;
 
 ll res=1;
 for(int i=0;i<n;i++){
     ll x;cin>>x;
     if(x==0)res=0;
     if(res!=0 && (x>lim/res || res*x>lim) )res=-1;
     if(res!=-1)res=res*x;
     }
   cout<<res;
 
   return 0;
}

Compiler output:
a.cc:3:1: error: 'll' does not name a type
    3 | ll lim=1e18;
      | ^~
a.cc: In function 'int main()':
a.cc:5:2: error: 'fast' was not declared in this scope
    5 |  fast
      |  ^~~~
a.cc:6:13: error: 'n' was not declared in this scope; did you mean 'yn'?
    6 |  int n;cin>>n;
      |             ^
      |             yn
a.cc:8:2: error: 'll' was not declared in this scope
    8 |  ll res=1;
      |  ^~
a.cc:10:8: error: expected ';' before 'x'
   10 |      ll x;cin>>x;
      |        ^~
      |        ;
a.cc:10:16: error: 'x' was not declared in this scope
   10 |      ll x;cin>>x;
      |                ^
a.cc:11:14: error: 'res' was not declared in this scope
   11 |      if(x==0)res=0;
      |              ^~~
a.cc:12:9: error: 'res' was not declared in this scope
   12 |      if(res!=0 && (x>lim/res || res*x>lim) )res=-1;
      |         ^~~
a.cc:12:22: error: 'lim' was not declared in this scope
   12 |      if(res!=0 && (x>lim/res || res*x>lim) )res=-1;
      |                      ^~~
a.cc:13:9: error: 'res' was not declared in this scope
   13 |      if(res!=-1)res=res*x;
      |         ^~~
a.cc:15:10: error: 'res' was not declared in this scope
   15 |    cout<<res;
      |          ^~~
Language: C++

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

int main() {
  int N;
  long double B=1000000000000000000;
  long long Ans=1,
  cin >> N;
  vector<long long> A(N);
  rep(i, N) cin >> A.at(i);
  sort(A.begin(), A.end());
  rep(i, N){
    Ans*=A.at(i);
    if(Ans>B){
      Ans=-1;
      break;
    }
  }
  cout << Ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:7: error: expected initializer before '>>' token
    9 |   cin >> N;
      |       ^~
Language: C++

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

const int64_t mx = 1e18;

int main() {
  int N;
  cin >> N;
  bool ng = false;

  for (int i = 0; i < N; i++) {
    int64_t A;
    cin >> A;

    if (A == 0) {
      cout << 0 << endl;
      return 0;
    }

    if (ans * A > mx) {
      ng = true;
    }
    
    ans *= A;

  }

  if (ng) cout << -1 << endl;
  else cout << ans << endl;
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   20 |     if (ans * A > mx) {
      |         ^~~
      |         abs
a.cc:24:5: error: 'ans' was not declared in this scope; did you mean 'abs'?
   24 |     ans *= A;
      |     ^~~
      |     abs
a.cc:29:16: error: 'ans' was not declared in this scope; did you mean 'abs'?
   29 |   else cout << ans << endl;
      |                ^~~
      |                abs
Language: Java

import java.util.*;
import java.math.*;
import java.lang.*;

public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    long[] a = new long[n];

    for (int i = 0; i < n; i++) {
      a[i] = sc.nextLong();
      if (a[i] == 0) {
        System.out.println(0);
        return;
      }
    }

    Arrays.sort(a);

    BigDecimal sum = new BigDecimal("1");

    for (int i = n-1; i >= 0; i--) {
      sum *= a[i];
      if (sum > (long)Math.pow(10,18)) {
        System.out.println(-1);
        return;
      }
    }

    System.out.println(sum);
  }

}


Compiler output:
Main.java:25: error: bad operand types for binary operator '*'
      sum *= a[i];
          ^
  first type:  BigDecimal
  second type: long
Main.java:26: error: bad operand types for binary operator '>'
      if (sum > (long)Math.pow(10,18)) {
              ^
  first type:  BigDecimal
  second type: long
2 errors
Language: Java

import java.math.BigInteger;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner in = new Scanner(System.in);
		long[] a = new long[n];
		boolean zero = false;
		for(int i=0;i<n;i++){
			a[i] = sc.nextLong();
			if(a[i]==0){
				zero = true;
			}
		}
		BigInteger ans = new BigInteger(String.valueOf(a[0]));
		for(int i=1;i<n;i++){
			ans = ans.multiply(new BigInteger(String.valueOf(a[i])));
			if(ans.compareTo(new BigInteger(String.valueOf((long) Math.pow(10,18)))) == 1){
				ans = new BigInteger(String.valueOf(-1));
				break;
			}
		}
		System.out.println(zero ? 0 : ans);
	}
}


Compiler output:
Main.java:9: error: cannot find symbol
		long[] a = new long[n];
		                    ^
  symbol:   variable n
  location: class Main
Main.java:11: error: cannot find symbol
		for(int i=0;i<n;i++){
		              ^
  symbol:   variable n
  location: class Main
Main.java:12: error: cannot find symbol
			a[i] = sc.nextLong();
			       ^
  symbol:   variable sc
  location: class Main
Main.java:18: error: cannot find symbol
		for(int i=1;i<n;i++){
		              ^
  symbol:   variable n
  location: class Main
4 errors
Language: C++

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

  int main() {

    int N;
    cin >> N;
    unsigned long long int S = 1;
    unsigned long long int M = pow(10, 18);
    bool zero;
    bool yaba;

    vector<unsigned long long int> A(N);
    for (int i; i < N; i++)
    {
      cin >> A.at(i);
      if (A.at(i) == 0)
      {
        zero = true;
        break;
      }
      S *= A.at(i);
      if (S > M)
      {
        yaba = true;
      }

    }


    if (zero)
    {
      cout << "0" << endl;
    }
    else if !(yaba)
    {
      cout << S << endl;
    }
    else
    {
      cout << "-1" << endl;
    }

  }


Compiler output:
a.cc: In function 'int main()':
a.cc:35:13: error: expected '(' before '!' token
   35 |     else if !(yaba)
      |             ^
      |             (
a.cc:39:5: error: 'else' without a previous 'if'
   39 |     else
      |     ^~~~
Language: C++

def main ():
  N = int(input())
  A = list(map(int,input(). split ()))
  if 0 in A:
    print(0)
    return
  prod = 1
  for a in A:
    prod *= a
    if prod > 1000000000000000000:
      print(-1)
      return
  print(prod)
main ()

Compiler output:
a.cc:1:1: error: 'def' does not name a type
    1 | def main ():
      | ^~~
Language: C++

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

int main(){

  /*********************************************
    writer Torisuto 2020/5/31
    N個の整数をすべて掛け算し、10^18を越えたら−１を出力
    その他はすべてかけた値を出力

    2 <= N <= 10^5
    0 <= A[i] <= 10^18
  **********************************************/

  int N;
  cin >> N;
  vector<vedctor<long long>> A(N);
  // A[i] = 0 がある場合を注意
  for(int i = 0; i < N; i++){
    cin >> A[i];
    if(A[i] == 0){
      cout << 0 << endl;
      return 0;
    }
  }

  /**********************************************************
    そのまま掛け算してしまうとオーバーフローしてしまうことがある。
    そこで1e18を持った変数を用意しておき、かける数で割り続けることで
    1e18を越えるか判定ができる。なぜできるのか例を示す
    1e18の代わりに5で考える。
    5/2 = 2.5　入力される数は整数であることを考慮すると
    よって、次にかける数が5を越えないようには少数を切り捨てた整数までが、
    5を越えないかける数となる。
  ***********************************************************/

  long long judge = 1e18, ans = 1;
  for(int i = 0; i < N; i++){
    if(judge > A[i]){
      judge /= A[i];
      ans *= A[i];
    }

    else{
      cout << -1 << endl;
      return 0;
    }
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:10: error: 'vedctor' was not declared in this scope
   17 |   vector<vedctor<long long>> A(N);
      |          ^~~~~~~
a.cc:17:27: error: template argument 1 is invalid
   17 |   vector<vedctor<long long>> A(N);
      |                           ^~
a.cc:17:27: error: template argument 2 is invalid
a.cc:20:13: error: invalid types 'int[int]' for array subscript
   20 |     cin >> A[i];
      |             ^
a.cc:21:9: error: invalid types 'int[int]' for array subscript
   21 |     if(A[i] == 0){
      |         ^
a.cc:39:17: error: invalid types 'int[int]' for array subscript
   39 |     if(judge > A[i]){
      |                 ^
a.cc:40:17: error: invalid types 'int[int]' for array subscript
   40 |       judge /= A[i];
      |                 ^
a.cc:41:15: error: invalid types 'int[int]' for array subscript
   41 |       ans *= A[i];
      |               ^
Language: C++

#include <algorithm>
#include <bits/stdc++.h>
#include<iostream>
#include<string>
using namespace std;
#define rep(i, n) for (int i = 0; i <(int)(n); i++)
#define all(x) (x).begin(), (x).end()
#define ll long long
const ll MOD=100000007;
const ll INF=1000000000000000001;
int main(){
 ll n;cin>>n;
 ll a[n];
 bool ok=false;
 rep(i,n){
   cin>>a[i];
   if(a[i]==0)ok=true;
 }
 if(ok){
   cout << 0 << endl;
   exit(0);
 }
 ll sum=1;
 rep(i,n){
   sum*=a[i];
  if(sum>=INF){
    cout << -1 << endl;
    exit(0);
  }
cout<<sum<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:31:2: error: expected '}' at end of input
   31 | }
      |  ^
a.cc:11:11: note: to match this '{'
   11 | int main(){
      |           ^
Language: C++

#include "Main.h"

namespace com::atCode
{

	void Main::main(std::vector<std::wstring> &args)
	{
		Scanner *sc = new Scanner(System::in);
		int N = sc->nextInt();
		std::vector<BigInteger*> A(N);
		for (int i = 0; i < N; i++)
		{
			A[i] = sc->nextBigInteger();
		}

		BigInteger *mult = new BigInteger(L"1");
		for (int i = 0; i < N; i++)
		{
			mult = A[i]->multiply(mult);
		}
		BigInteger *max = new BigInteger(L"1000000000000000000");
		int comparevalue = mult->compareTo(max);
		if (comparevalue == 1)
		{
			std::wcout << L"-1" << std::endl;
		}
		else
		{
			std::wcout << mult << std::endl;
		}

		delete sc;
	}
}


Compiler output:
a.cc:1:10: fatal error: Main.h: No such file or directory
    1 | #include "Main.h"
      |          ^~~~~~~~
compilation terminated.
Language: C++

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

int main() {
  int N;
  cin >> N;
  LL out =1;
  const LL MX =1e18;
  
  for (int i=0;i<N;i++){
    LL b;
    cin >> b;
    bool ng = false;
    if (b ==0){
      cout<< 0 <<endl;
      return 0;
    }
    if (MX/out<b){
      ng = true;
    }
    
    out *= b;
  }
  if (ng) cout<< -1 << endl;
  else
    cout << out << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:25:7: error: 'ng' was not declared in this scope
   25 |   if (ng) cout<< -1 << endl;
      |       ^~
Language: C++

from sys import stdin
n = int(stdin.readline().rstrip())
li = list(map(int, input().split()))
ans=1
for i in li:
    ans*=i
if ans >1000000000000000000:
	print("-1")
    exit()
else:
	print(ans)


Compiler output:
a.cc:1:1: error: 'from' does not name a type
    1 | from sys import stdin
      | ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int N;
  cin >> N;
  vector<long long> vec(N);
  long long ans = 1;
  for(int i = 0; i<N; i++){
    cin >> vec[i];
  }
  
  for(int i = 0; i<N; i++){
    ans *= vec[i];
    if(ans > 1000000000000000000){
      break;
    }else if(v[i] == 0){
      break;
    }
  }
  if(ans > 1000000000000000000){
    cout << "-1" << endl;
  }else{
     cout << ans << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:14: error: 'v' was not declared in this scope
   16 |     }else if(v[i] == 0){
      |              ^
Language: C++

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

using namespace std;

int main() {
  int n;
  long long a;
  long long ans = 1;
  bool ng = false;
  cin >> n;
  rep(i, n){
    cin >> a;
    if(a[i] == 0){
      cout << 0 << endl;
      return 0;
    }
    if(a > 1e18 / ans){
      ng = true;
    }
    ans *= a;
  }
  
  if(ng) cout << -1 << endl;
  else cout << ans << endl;
}
  

Compiler output:
a.cc: In function 'int main()':
a.cc:14:9: error: invalid types 'long long int[int]' for array subscript
   14 |     if(a[i] == 0){
      |         ^
Language: C

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll mod = 1000000000000000000;
 
main(){
    int n;
    cin>>n;
    ll a[n];
    ll prod = 1;
    for(int i =0;i<n;i++){
        cin>>a[i];
        if(a[i] == 0){
            cout<<"0";
            exit(0);
        }
    }    
    for(int i=0;i<n;i++){
        if(a[i]<= mod/prod)
        prod*= a[i];
        else{
            cout<<"-1";
            exit(0);
        }
    }
    cout<<prod<<"\n";
}

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;
  unsigned long long a[100000];
  scanf("%d", &n);
  for (int i = 0; i < n; i++) {
  	scanf("%llu", &a[i]);
  }
  
  unsigned long long b = 1;
  for (int i = 0; i < n; i++) {
    if (a[i] <= 1000000000000000000/b) {
    	b = b * a[i];	
    } else {
    	cout << -1 << endl;
     	return 0;
    }
  }
  
  cout << b << 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<stdio.h>

int main(void){
    long int N;
    long long int A[100000];
    long long int b;
    long long int i;
    long long int a;
    int flag = 0;
    scanf("%ld", &N);

    for(b=0;b<=N-1;b++){
    scanf("%lld", &A[b]);
    }
    
    a = 1;
    
    for(i=0;i<=N-1;i++){
        if(A[i]==0){
            a = 0;
            flag = 0;
            break;
        }
        else if(a<=1000000000000000000){
             a = a*A[i];
        } 
        else{
            flag++;
        }

    }
   
    else if(flag==0 && a<=1000000000000000000 && a>=0){
    printf("%lld\n",a);
    return 0;
    }
    else{
    printf("-1\n");
    return 0;
    }
    
}

Compiler output:
main.c: In function 'main':
main.c:33:5: error: 'else' without a previous 'if'
   33 |     else if(flag==0 && a<=1000000000000000000 && a>=0){
      |     ^~~~
Language: C++

#include <iostream>
using namespace std;
#define ll long long
// Google大好き！！！
int main() {
  int n;
  cin >> n;

  ll ans = 1;
  const ll m = 1e18;
  bool flag = false;

  for (int i = 0; i <= n; i++) {
    ll a;
    cin >> a;

    // cout << a << "kasu" << ans << endl;
    if (a == 0) {
      cout << a << endl;
      return;
    }
    if ((m + 1) / ans < a || ans > m) {
      flag = true;
    }
    ans *= a;
  }
  if (flag)
    cout << -1 << endl;
  else
    cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:7: error: return-statement with no value, in function returning 'int' [-fpermissive]
   20 |       return;
      |       ^~~~~~
Language: C++

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

int main() {
  long long N;
  cin >> N;
  
  vector<long long>A(N);
  for (int i = 0; i < N; i++) {
    cin >> A.at(i);
  }
  
  long long m = 1;
  
  for (int i = 0; i < N; i++) {
    if (A.at(i) == 0){
      m = 0;
    }
  }
  
 if (m == 1){
    
  for (int i = 0; i < N; i++) {
    if (1000000000000000001 /m  >= A.at(i);) {
      m *= A.at(i);
    }
    else 
      m = -1;
      break;
    }     
  }   
 }
  
  if (m > 1000000000000000000 || m < 0){
    cout << -1 << endl;
  }
  else {
    cout << m << endl;
  }
}




Compiler output:
a.cc: In function 'int main()':
a.cc:24:44: error: expected primary-expression before ')' token
   24 |     if (1000000000000000001 /m  >= A.at(i);) {
      |                                            ^
a.cc: At global scope:
a.cc:34:3: error: expected unqualified-id before 'if'
   34 |   if (m > 1000000000000000000 || m < 0){
      |   ^~
a.cc:37:3: error: expected unqualified-id before 'else'
   37 |   else {
      |   ^~~~
a.cc:40:1: error: expected declaration before '}' token
   40 | }
      | ^
Language: C

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

int main() {
  long long N;
  cin >> N;
  
  vector<long long>A(N);
  for (int i = 0; i < N; i++) {
    cin >> A.at(i);
  }
  
  long long m = 1;
  
  for (int i = 0; i < N; i++) {
    if (A.at(i) == 0){
      m = 0;
    }
  }
  
 if (m == 1){
    
  for (int i = 0; i < N; i++) {
    if (1000000000000000001 /m  >= A.at(i);) {
      m *= A.at(i);
    }
    else 
      m = -1;
      break;
    }     
  }   
 }
  
  if (m > 1000000000000000000 || m < 0){
    cout << -1 << endl;
  }
  else {
    cout << m << endl;
  }
}




Compiler output:
main.c:1:10: 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 < n ; i++ )
typedef long long ll ;

int main(){
  ll a ;
  cin >> a ;
  int128 A[a] ;
  rep(i,a) cin >> A[i] ;
  rep(i,a){
    if(A[i] == 0 ){
	cout << 0 << endl;
      return 0 ;
    }
  }
  int128 ans = 1 ;
  rep(i,a){
   if( A[i]*ans > (ll) 1e18 ){
      cout << -1 << endl;
      return 0 ;
   }
    ans *= A[i] ;
  }
  cout << ans << endl ;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:9:3: error: 'int128' was not declared in this scope; did you mean 'ynf128'?
    9 |   int128 A[a] ;
      |   ^~~~~~
      |   ynf128
a.cc:10:19: error: 'A' was not declared in this scope
   10 |   rep(i,a) cin >> A[i] ;
      |                   ^
a.cc:12:8: error: 'A' was not declared in this scope
   12 |     if(A[i] == 0 ){
      |        ^
a.cc:17:9: error: expected ';' before 'ans'
   17 |   int128 ans = 1 ;
      |         ^~~~
      |         ;
a.cc:19:8: error: 'A' was not declared in this scope
   19 |    if( A[i]*ans > (ll) 1e18 ){
      |        ^
a.cc:19:13: error: 'ans' was not declared in this scope; did you mean 'abs'?
   19 |    if( A[i]*ans > (ll) 1e18 ){
      |             ^~~
      |             abs
a.cc:23:5: error: 'ans' was not declared in this scope; did you mean 'abs'?
   23 |     ans *= A[i] ;
      |     ^~~
      |     abs
a.cc:23:12: error: 'A' was not declared in this scope
   23 |     ans *= A[i] ;
      |            ^
a.cc:25:11: error: 'ans' was not declared in this scope; did you mean 'abs'?
   25 |   cout << ans << endl ;
      |           ^~~
      |           abs
Language: C++

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

#define rep(i, n) for(long long i=0;i<(long long)(n);i++)
#define rep2(i, s, n) for(long long i=(s);i<(long long)(n);i++)
#define repi(i, n) for(int i=0;i<(int)(n);i++)
#define rep2i(i, s, n) for(int i=(s);i<(int)(n);i++)
#define all(v) v.begin(), v.end()

using ll = long long;
using ld = long double;
using vll = vector<ll>;
using vvll = vector<vll>;
using P = pair<ll, ll>;
using vi = vector<int>;
using vvi = vector<vi>;

const ll INF = (1LL<<60);
const int INFi = (1<<29);

int main(){

    ll n;cin >> n;
    ll in;
    ld b=1;
    rep(i, n){
        cin >> in;
        b *= in;
    }
    if(b>1e18) cout << "-1" << endl;
    else cout << a << endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:31:18: error: 'a' was not declared in this scope
   31 |     else cout << a << endl;
      |                  ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep1(i, n) for (int i = 1; i <= (int)(n); i++)
using P = pair<int,int>;
using pq = priority_queue<int>;
typedef long long ll;
string yes = "Yes\n";
string no = "No\n";

ll MAX = 1e18;

int  main()
{
	int n; cin >> n;
	vector<ll>  a(n);
	ll sum = 1;
	rep(i, n)
	{
		cin >> a[i];
		if (a[i] == 0)
		{
			cout << 0 << endl;
			return 0;
		}
	}
	rep(i, n)
	{
		sum *= a[i];
		if (1000000000000000000/sum < a[i])
		{
			cout << -1; return 0;
		}
		// if (sum > 1000000000000000000)
		// {
		// 	cout << -1;
		// 	return 0;
		// }
	}
	cout << << endl;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:40:17: error: expected primary-expression before '<<' token
   40 |         cout << << endl;
      |                 ^~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep1(i, n) for (int i = 1; i <= (int)(n); i++)
using P = pair<int,int>;
using pq = priority_queue<int>;
typedef long long ll;
string yes = "Yes\n";
string no = "No\n";

ll MAX = 1e18;

int  main()
{
	int n; cin >> n;
	vector<ll>  a(n);
	ll sum = 1;
	rep(i, n)
	{
		cin >> a[i];
		if (a[i] == 0)
		{
			cout << 0 << endl;
			return 0;
		}
	}
	rep(i, n)
	{
		sum *= a[i];
		if (1000000000000000000/sum < a[i])
		{
			cout << -1 return 0;
		}
		// if (sum > 1000000000000000000)
		// {
		// 	cout << -1;
		// 	return 0;
		// }
	}
	cout << << endl;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:32:35: error: expected ';' before 'return'
   32 |                         cout << -1 return 0;
      |                                   ^~~~~~~
      |                                   ;
a.cc:40:17: error: expected primary-expression before '<<' token
   40 |         cout << << endl;
      |                 ^~
Language: C++

#include <bits/stdc++.h>
using namespace std;
const long long MX = 1e18;
int main() {
    long long n,ans = 1;
    cin >> n;
    long long data[i];
    for (int i = 0; i < n; i++){
        cin >> data[i];
        if(data[i] == 0){
            cout << 0 << endl;
            return 0;
        }
    }
    for (int i = 0; i < n; i++){
        if(ans * data[i] > MX||(MX+1) /ans < data[i]){
            cout << -1 << endl;
            return 0;
        }
        ans *=data[i];
    }
    
    cout << ans << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:20: error: 'i' was not declared in this scope
    7 |     long long data[i];
      |                    ^
a.cc:9:20: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
    9 |         cin >> data[i];
      |                    ^
a.cc:10:16: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   10 |         if(data[i] == 0){
      |                ^
a.cc:16:22: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   16 |         if(ans * data[i] > MX||(MX+1) /ans < data[i]){
      |                      ^
a.cc:16:50: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   16 |         if(ans * data[i] > MX||(MX+1) /ans < data[i]){
      |                                                  ^
a.cc:20:19: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   20 |         ans *=data[i];
      |                   ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
const ll c = 1e18;
int main(){
    int n;
    bool flg=false;
    cin >> n;
    long long s=1;
    for(int i=0; i<n; i++){
        long long tmp;
        cin >> tmp;
        if(tmp==0){
            cout << 0 <<"\n";
            return 0;
        }
        if(s*tmp>c||(c+1)/s<tmp){
            flg = true;
        }
        s *= tmp;
    }
    if(flg){
        cout << -1 << "\n";
        return 0;
    }
    cout << s << "\n";
    return 0;
}

Compiler output:
a.cc:3:7: error: 'll' does not name a type
    3 | const ll c = 1e18;
      |       ^~
a.cc: In function 'int main()':
a.cc:16:18: error: 'c' was not declared in this scope
   16 |         if(s*tmp>c||(c+1)/s<tmp){
      |                  ^
Language: Java

import static java.lang.Math.multiplyExact;
import java.util.Arrays;
import java.util.Scanner;

public class B {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        Integer n = scanner.nextInt();
        Long[] a = new Long[n];
        Long limit = (long)Math.pow(10,18);

        for (int i = 0; i < n; i++) {
            a[i] = scanner.nextLong();
        }

        Arrays.sort(a);

        if (a[0] == 0){
            System.out.print(0);
            System.exit(0);
        }

        Long result = a[0];

        for (int i = 1; i < n; i++) {
            result = multiplyExact(result,a[i]);
            if (result > limit) {
                System.out.print(-1);
                System.exit(0);
            }
        }
        System.out.print(result);
    }
}

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 FOR(i,n) for(int i=0; i<n; ++i)
#define FORR(i,a,n) for(int i=a; i<n; ++i)
#define ALL(c) (c).begin(), (c).end()
#define RALL(a) (a).rbegin(), (a).rend()
#define UNIQ(c) (c).erase(unique(ALL((c))), end((c)))

const int INF = 0x3f3f3f3f;

typedef long long ll;
typedef vector<int> VI;
typedef vector<ll> VL;
typedef vector<VI> VVI;
typedef vector<VL> VVL;
typedef vector<string> VS;
typedef pair<int,int> PI;
typedef pair<ll,ll> PL;
 
//int in() { int x; scanf("%d", &x); return x; }
//ll lin() { ll x; scanf("%lld", &x); return x; }
//void printfv(VI a){ int n = a.size(); FOR(i, n) cout << a[i] << " "; }

const ll MAX = 1e18;

int main(void){
    std::ios_base::sync_with_stdio(false);

    int n;
    cin >> n;

    ll ans = 1;
    bool ng = false;
    FOR(i, n){
    	ll tmp;
    	cin >> tmp;

    	if(tmp == 0){
    		cout << 0 << endl;
    		return 0;
    	}

    	if((MAX+1)/ans < tmp ans*tmp > MAX){
    		ng = true;
    	}

    	ans *= tmp;    	
    }

    if(ng) 
    	cout << -1 << endl;
	else
    	cout << ans;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:45:29: error: expected ')' before 'ans'
   45 |         if((MAX+1)/ans < tmp ans*tmp > MAX){
      |           ~                 ^~~~
      |                             )
Language: C++

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

typedef long long ll;
#define REP(i,n) for(ll i=0; i<(ll)(n); i++)
#define REPM(i,n) for(ll i=(n); 0<=i; i--)
#define VI vector<int>
#define VL vector<ll>
#define VD vector<double>
#define VS vector<string>
#define V_SORT_U(x) sort(x.begin(), x.end());
#define V_SORT_D(x) sort(x.begin(), x.end(),greater<int>());
#define V_SUM(x) accumulate(x.begin(), x.end(), 0)
#define STR_TRANS_UP(x) transform(x.begin(), x.end(), x.begin(), ::toupper);
#define STR_TRANS_LOW(x) transform(x.begin(), x.end(), x.begin(), ::tolower);

int main(void){
    ll N;
    __int64 tmp;
    __int64 result=1;

    cin >> N;

    REP(i,N)
    {
        cin >> tmp;

        if(tmp==0)
        {
            cout << "0" << endl;
            return 0;
        }
        
        if(tmp==1)
        {
            continue;
        }

        //除算で行わないと判定がおかしくなる
        if( tmp<=(1000000000000000000/result) )
        {
            result *= tmp;
        }
        else
        {
            cout << "-1" << endl;
            return 0;
        }
    }

    cout << result << endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:5: error: '__int64' was not declared in this scope; did you mean '__ynf64'?
   19 |     __int64 tmp;
      |     ^~~~~~~
      |     __ynf64
a.cc:20:12: error: expected ';' before 'result'
   20 |     __int64 result=1;
      |            ^~~~~~~
      |            ;
a.cc:26:16: error: 'tmp' was not declared in this scope; did you mean 'tm'?
   26 |         cin >> tmp;
      |                ^~~
      |                tm
a.cc:40:39: error: 'result' was not declared in this scope
   40 |         if( tmp<=(1000000000000000000/result) )
      |                                       ^~~~~~
a.cc:51:13: error: 'result' was not declared in this scope
   51 |     cout << result << endl;
      |             ^~~~~~
Language: C++

import java.math.BigDecimal;
import java.util.*;

public class Main {

    static BigDecimal MAX = new BigDecimal(1_000_000_000_000_000_000L);
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        long[] a = new long[n];
        for (int i = 0; i < n; i++) {
            a[i] = sc.nextLong();
            if(a[i] == 0) {
            	System.out.println(0);
            	return;
            }
        }
        BigDecimal d = new BigDecimal(a[0]);
        for (int i = 1; i < n; i++) {
            d = d.multiply(new BigDecimal(a[i]));
            if(d.compareTo(MAX) == 1){
            	System.out.println(-1);
            	return;                
            }
        }
        System.out.println(d.longValue());
        
        sc.close();

    }

}


Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.math.BigDecimal;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:2:1: error: 'import' does not name a type
    2 | import java.util.*;
      | ^~~~~~
a.cc:2:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:4:1: error: expected unqualified-id before 'public'
    4 | public class Main {
      | ^~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
const ll MX = 1e18;
int main() {
    long long n,ans = 1;
    cin >> n;
    long long data;
    for (int i = 0; i < n; i++){
        cin >> data;
        if(data == 0){
            cout << 0 << endl;
            return 0;
        }
        if(ans * data > MX||(MX+1) /ans < data){
            cout << -1 << endl;
            return 0;
        }
        ans *=data;
    }
    cout << ans << endl;
    return 0;
}


Compiler output:
a.cc:3:7: error: 'll' does not name a type
    3 | const ll MX = 1e18;
      |       ^~
a.cc: In function 'int main()':
a.cc:14:25: error: 'MX' was not declared in this scope
   14 |         if(ans * data > MX||(MX+1) /ans < data){
      |                         ^~
Language: C

#include<stdio.h>
int main()
{
    int n,zero=0;
    scanf("%d", &n);
    
    long long a[100005],r=1;
    for(int i=0;i<n;i++){
        scanf("%lld", &a[i])
        if(a[i]==0){
            zero=1;
        }
    }
    
    if(zero==1){
        printf("0");
        return 0;
    }
    
   
    for(int j=0;j<n;j++){
        long long tmp;
        tmp=r*a[j];
        //オーバーフロー or 10^18を超える場合
        if(r > tmp || r > 1000000000000000000){
            printf("-1");
            return 0;
        }
        r=tmp;
    }
    
    printf("%lld",r);
    return 0;
}


Compiler output:
main.c: In function 'main':
main.c:9:29: error: expected ';' before 'if'
    9 |         scanf("%lld", &a[i])
      |                             ^
      |                             ;
   10 |         if(a[i]==0){
      |         ~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define int unsigned long long int
int main(){
    int i,n,ans=1,k;
    cin>>n;
    for(i=0;i<n;i++){
        cin>>k;
        if(ans>1e13&&k>=1e5){cout<<"-1";return 0;}
        if(ans>1e14&&k>=1e4){cout<<"-1";return 0;}
        if(ans>1e15&&k>=1e3){cout<<"-1";return 0;}
        if(ans>1e16&&k>=100){cout<<"-1";return 0;}
        if(ans>=1e17&&k>=10){cout<<"-1";return 0;}
        ans*=k;
        if(ans>1e18){cout<<"-1";return 0;}
    }
    cout<<ans;
    return 0;
}

Compiler output:
a.cc:3:32: error: '::main' must return 'int'
    3 | #define int unsigned long long int
      |                                ^~~
a.cc:4:1: note: in expansion of macro 'int'
    4 | int main(){
      | ^~~
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for (int i=0 ; i<(n) ; ++i)
typedef long long ll;
using namespace std;
//const ll MAX = 2500LL;
typedef pair <ll, ll> P;
const ll MX = 1e18;

int vector_finder(std::vector<ll> vec, int number) {
  auto itr = std::find(vec.begin(), vec.end(), number);
  size_t index = std::distance( vec.begin(), itr );
  if (index != vec.size()) { // 発見できたとき
    return 1;
  }
  else { // 発見できなかったとき
    return 0;
  }
}

int main(){
  int n;
  cin >> n;
  ll ans=1;
  int flag=0;
  vector<ll> a_hai;
  bool flag=false;
  rep(i,n){
    ll a;
    cin >> a;
    if(a==0){
      cout << 0 << endl;
      return 0;
    }
    //a_hai.push_back(a);
    if((MX+1)/a <= ans){
      flag=true;
      //cout << -1 << endl;
      //return 0;
    }
    ans *= a;
  }
  if(flag) cout << -1 << endl;
  else cout << ans << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:26:8: error: conflicting declaration 'bool flag'
   26 |   bool flag=false;
      |        ^~~~
a.cc:24:7: note: previous declaration as 'int flag'
   24 |   int flag=0;
      |       ^~~~
Language: C

#include <stdio.h>
int main(void)
{
	unsigned long long int num, sum=1;
	int lim, i;
    int flag1=0, flag2=0;
	scanf("%d", &lim);
	for (i = 0; i < lim; i++) {
		scanf("%lld", &num);
        if(num  > 1000000000000000000)
          flag1 = 1;
        if(num =< 1000000000000000000 / sum)
          sum *= num;
        if(num ==0)
          flag2=1;
	}
	if (flag2==1)
		printf("%d\n", 0);
	else if(flag1==1)
		printf("%d\n", -1);
    else 
        printf("%lld\n", sum);
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:12:17: error: expected expression before '<' token
   12 |         if(num =< 1000000000000000000 / sum)
      |                 ^
Language: C++

#include <bits/stdc++.h>
#define rep(i, n) for (ll i = 0; i < (n); i++)
#define all(x) (x).begin(), (x).end()
using ll = long long;
using namespace std;
template <typename T> using vec = std::vector<T>;

int main() {
    int N;
    cin >> N;
    vec<ll> A(N);
    ll ans  = 1;
    bool flag = true;
    rep(i, N) {
        ll A;
        cin >> A;
        if (ans > (ll)1e18/A){
            flag = false;
        } else {
            ans+=A;
        
        if (A == 0) {
            cout << 0 << endl;
            return 0;
        }
    }
    cout << (flag ? (ll)ans : -1) << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:28:2: error: expected '}' at end of input
   28 | }
      |  ^
a.cc:8:12: note: to match this '{'
    8 | int main() {
      |            ^
Language: C++

#include<bits/stdc++.h>
#define ll long long
#define ld long double
int main()
{
  int n;
cin >> n;
ll t;
ld ans = 1;
for (int i = 0; i < n; i++)
{
    cin >> t;
    if (ans != -1)
       ans *= t;
    if (ans > 1000000000000000000 || ans < 0)
       ans = -1;
    if (t == 0)
       ans = 0;
}
cout << (ll)ans;
return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:7:1: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    7 | 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:20:1: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   20 | cout << (ll)ans;
      | ^~~~
      | 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;

#define FOR(i,n) for(int i=0; i<n; ++i)
#define FORR(i,a,n) for(int i=a; i<n; ++i)
#define ALL(c) (c).begin(), (c).end()
#define RALL(a) (a).rbegin(), (a).rend()
#define UNIQ(c) (c).erase(unique(ALL((c))), end((c)))

const int INF = 0x3f3f3f3f;

typedef long long ll;
typedef vector<int> VI;
typedef vector<ll> VL;
typedef vector<VI> VVI;
typedef vector<VL> VVL;
typedef vector<string> VS;
typedef pair<int,int> PI;
typedef pair<ll,ll> PL;
 
//int in() { int x; scanf("%d", &x); return x; }
//ll lin() { ll x; scanf("%lld", &x); return x; }
//void printfv(VI a){ int n = a.size(); FOR(i, n) cout << a[i] << " "; }

const ll MAX = 1e18;

int main(void){
    std::ios_base::sync_with_stdio(false);

    int n;
    cin >> n;

    ll ans = 1;
    bool ng = false;
    FOR(i, n){
    	ll tmp;
    	cin >> tmp;

    	if((MAX + 1)/ans < a || tmp == 0){
    		cout << 0 << endl;
    		return 0;
    	}

    	if(ans*tmp > MAX){
    		ng = true;
    	}

    	ans *= tmp;    	
    }

    if(ng) 
    	cout << -1 << endl;
	else
    	cout << ans;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:40:28: error: 'a' was not declared in this scope
   40 |         if((MAX + 1)/ans < a || tmp == 0){
      |                            ^