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

#include <bits/stdc++.h>

using namespace std;

int s[100000];
int m[100000];
int main(int, char**)
{
	int n;
	cin >> n;
	for (int i = 0; i< n; ++i) {
		cin >> s[i];
	}

	sort(s, s+n);
	int ans = s[0];
	bool bEnd = false;
	while ( ! bEnd) {
		int k = 1;
		m[0] = s[0];
		bEnd = true;
		for (int i = 0; i < n; ++i) {
			for (int j = i+1; j < n; ++j) {
				if (s[i] == 1) {
					ans = 1;
					cout << 1 << endl;
					return 0;
				}
				if (s[i] > 0) {
					m[k] = s[j]%s[i];
					if (m[k] > 0) {
						for (int l = 0; l < k; ++l) {
							if (m[k] == m[l])
								break;
						}
						if (l == k) {
							bEnd = false;
							k++;
						}
					}
				}
			}
		}
		for (int i = 0; i < k; ++i)
			s[i] = m[i];
		sort(s, s+k);
		n = k;
	}

	cout << s[0] << endl;
}



Compiler output:
a.cc: In function 'int main(int, char**)':
a.cc:36:53: error: 'l' was not declared in this scope
   36 |                                                 if (l == k) {
      |                                                     ^
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;
  long long int a[n];
  long long int x;
  for(int i=0;i!=n;i++){
    cin >> a[i];
  }
  x=a[0];
  for(int i=1;i!=n;i++){
    x=gcd(x,a[i]);
  }
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:11: error: 'ans' was not declared in this scope; did you mean 'abs'?
   17 |   cout << ans << endl;
      |           ^~~
      |           abs
Language: C++

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

	int monster_max = maxof(monster, n);
	int surplus[n];
	for(int i = 0;i < n; i++){
		surplus[i] = monster_max % monster[i];
//		cout << "surplus="<< surplus[i]<< endl;
	}

//	for(int i = 0;i < n; i++){
//		cout << "monster = "<<monster[i]<<endl;
//	}

	if(maxof(surplus,n) == 0){
		cout << minof(monster,n) << endl;
	}else{
		int temp = n*n, ans[temp];
		for(int i = 0, j = 0 ; j<n ; j++){
			for(int k = 0 ; k < n ; k++, i++){
				if(int temp2 = sub(monster[j],surplus[k])){
					ans[i] = temp2;
				}else{
					ans[i] = monster_max;
				}
//				cout << "ans ="<<ans[i] << endl;
			}
		}
		cout << minof(ans,temp)<<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:9:27: error: 'maxof' was not declared in this scope
    9 |         int monster_max = maxof(monster, n);
      |                           ^~~~~
a.cc:21:17: error: 'cout' was not declared in this scope
   21 |                 cout << minof(monster,n) << endl;
      |                 ^~~~
a.cc:21:25: error: 'minof' was not declared in this scope
   21 |                 cout << minof(monster,n) << endl;
      |                         ^~~~~
a.cc:21:45: error: 'endl' was not declared in this scope
   21 |                 cout << minof(monster,n) << endl;
      |                                             ^~~~
a.cc:26:48: error: 'sub' was not declared in this scope
   26 |                                 if(int temp2 = sub(monster[j],surplus[k])){
      |                                                ^~~
a.cc:34:17: error: 'cout' was not declared in this scope
   34 |                 cout << minof(ans,temp)<<endl;
      |                 ^~~~
a.cc:34:25: error: 'minof' was not declared in this scope
   34 |                 cout << minof(ans,temp)<<endl;
      |                         ^~~~~
a.cc:34:42: error: 'endl' was not declared in this scope
   34 |                 cout << minof(ans,temp)<<endl;
      |                                          ^~~~
Language: C++

using namespace std;
 
const int MAX_N = 10e5;
 
int N;
unsigned long long A[MAX_N];
 
int main() {
  scanf("%d", &N);
  
  for (int i = 0; i < N; i++){
  	scanf("%d", &A[i]);
  }
  
  sort(A, A+N);
  
  int min[3];
  min[0] = A[0];
  min[1] = A[1];
  min[2]; 
  
  while (min[0] > 0){
    min[2] = min[1] - min[0];
    sort(min, min+3);
  }
 
  printf("%d\n", min[1]);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:3: error: 'scanf' was not declared in this scope
    9 |   scanf("%d", &N);
      |   ^~~~~
a.cc:15:3: error: 'sort' was not declared in this scope; did you mean 'short'?
   15 |   sort(A, A+N);
      |   ^~~~
      |   short
a.cc:27:3: error: 'printf' was not declared in this scope
   27 |   printf("%d\n", min[1]);
      |   ^~~~~~
a.cc:1:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
  +++ |+#include <cstdio>
    1 | using namespace std;
Language: Java

import java.util.*;

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();
		}
        Arrays.sort(a);
        long ans=a[0];
        boolean even=true;
        for(int i=0;i<n;i++) {
        	if(a[i]%2!=0) {
        		even=false;
        	}
        	
        	if(i!=0) {
        		a[i]=a[i]%ans;
        	}
        	
        }
        Arrays.sort(a);
        System.out.println(even?"2":a[n-2]==0?ans:"1");
        
    }
}
import java.util.*;

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();
		}
        Arrays.sort(a);
        long ans=a[0];
        boolean even=true;
        for(int i=0;i<n;i++) {
        	if(a[i]%2!=0) {
        		even=false;
        	}
        	
        	if(i!=0) {
        		a[i]=a[i]%ans;
        	}
        	
        }
        Arrays.sort(a);
        System.out.println(even?"2":a[n-2]==0?ans:"1");
        
    }
}


Compiler output:
Main.java:29: error: class, interface, enum, or record expected
import java.util.*;
^
1 error
Language: C++

#include<iostream>
#include<algorithm>

using namespace std;
int main(){
    int N;
    cin>>N;
    int test[N];
    for(int i=1;i<=N;i++){
        cin>>test[i];
    }
    int m;


 for(int s=1;s<=N-1;s++){
        for(int t=s+1;t<=N;t++){
            if(test[t]<test[s]){
                int u=test[t];
                test[t]=test[s];
                test[s]=u;
            }
        }
    }
    if(test[2]-test[1]!=0){
    while(test[2]-test[1] !=0){
     m=test[2]-test[1];
     test[1]=min(m,test[1]);
     test[2]=min(m,test[2])
    }}
    else{
        test[1]=m;
    }


int ans=test[1];
   cout<<ans;
     return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:28:28: error: expected ';' before '}' token
   28 |      test[2]=min(m,test[2])
      |                            ^
      |                            ;
   29 |     }}
      |     ~
Language: C++

#include <iostream>
#include <vector>

using namespace std;

int main(int argc, char ** argv){
  int N;
  vector<int> hp;
  cin >> N;
  for(int i=0; i < N; i++){
    int tmp;
    cin >> tmp;
    hp.push_back(tmp);
  }
  sort(hp.begin(), hp.end());
  
  int m,cnt;
  while(hp.size() != 1){
    m = hp[0];
    
    for(int i = 0; i < hp.size(); i++){
      if(hp[i] != m) hp[i] = hp[i] % m;
    }
    sort(hp.begin(), hp.end());
    
    int idx = 0;
    for(int i = 0; i < hp.size(); i++){
      if(hp[i] != 0) {
        idx = i;
        break;
      }
    }
    hp.erase(hp.begin(), hp.begin() + idx);
  }
  
  cout << hp[0];
  return 0;
}
      
    
  


Compiler output:
a.cc: In function 'int main(int, char**)':
a.cc:15:3: error: 'sort' was not declared in this scope; did you mean 'short'?
   15 |   sort(hp.begin(), hp.end());
      |   ^~~~
      |   short
Language: C

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

int main(){
    int n, m, k, *f, a,b,tmp;
    scanf("%d", &n);
    a=1000000000;
    f=(int *)malloc(sizeof(int)*n);
    
    for(int i=0;i<n;i++){
        scanf("%d", &f[i]);
        if(f[i]<a)a=f[i];
    }
    for(int i=1;i<n;i++){
        int k=i;
        while(k>1&&f[k]<f[k-1]){
            m=f[k];
            f[k]=f[k-1];
            f[k-1]=m;
            k--;
        }
    }
	m=n-1;
    while(tmp!=1){
		if(f[m-1]==0){
			printf("%d",f[m]);
			return 0;
		}
		f[m]%=f[m-1];
		tmp=f[m];
		i=m;
		while(f[i]<f[i-1]){
			f[i]=f[i-1];
			i--;
		}
		f[i-1]=tmp;
		m--;
			
	}
    free(f);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:31:17: error: 'i' undeclared (first use in this function)
   31 |                 i=m;
      |                 ^
main.c:31:17: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include "bits/stdc++.h"

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

typedef long long LL;
typedef unsigned long UL;

using namespace std;


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

	int n;

	scanf_s("%d", &n);

	vector<int> a(n);

	int mina = INT_MAX;

	REP(i, n)
	{
		scanf_s("%d", &a[i]);
		mina = min(mina, a[i]);
	}

	bool ok;

	for (int i = mina; i != 1; --i)
	{
		ok = true;

		REP(j, n)
		{
			if (a[j] % i != 0)
			{
				ok = false;
			}
		}


		if (ok == true)
		{
			printf("%d", i);
			return 0;
		}
	}

	printf("%d", 1);

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:9: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
   19 |         scanf_s("%d", &n);
      |         ^~~~~~~
      |         scanf
Language: C++

#include<iostream>
#include<cmath>

using namespace std;

int main(){

  int n;
  cin >> n;

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

  int min;
  min=a[0];
  for(int i=1;i<n;i++){
    if(min>a[i]){
      min=a[i];
    }
  }

  int co=1;

 
  for(int i=min;i>2;i=i/2){
    bool flag=true;
    for(int k=0;k<n;k++){
      if(a[k]%i!=0){
	flag=false;
	break;
      }
    }
    if(flag){
      co=i;
      break;
    }
  }
  if(co==1){
    bool flag=true;
    for(int k=0;k<n;k++){
      if(a[k]%2!=0){
	flag=false;
	break;
      }
    }
    if(flag){
      co=i;
    }
  }
  cout << co << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:49:10: error: 'i' was not declared in this scope
   49 |       co=i;
      |          ^
Language: C++

def sol(inp=input):
    n=int(inp())
    hps=sorted(map(int,inp().split()))

    while(len(hps)>1):
        maxhp=hps.pop()
        newhps=[maxhp%hp for hp in hps if maxhp%hp>0]
        hps=sorted(set(hps+newhps))
    return hps[0]
print(sol())

Compiler output:
a.cc:1:1: error: 'def' does not name a type
    1 | def sol(inp=input):
      | ^~~
Language: C

#include <stdio.h>

int main(void) {
	int num1, num2,temp;
	int i, j;
	int nums[100000];

	scanf("%d", &num1);
	for (i = 0; i < num1; i++) {
			scanf_s("%d",&num2);
			nums[i] = num2;
	}
	for (i = 0; i < num1 - 1; i++) {
		if (nums[i] < nums[i + 1]) {
			temp = nums[i];
			nums[i] = nums[i + 1];
			nums[i + 1] = temp;
		}
		temp = nums[i] % nums[i + 1];
		while (temp != 0) {
			nums[i] = nums[i + 1];
			nums[i + 1] = temp;
			temp = nums[i] % nums[i + 1];
		}
	}
	printf("%d", nums[i]);
	
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:10:25: error: implicit declaration of function 'scanf_s'; did you mean 'scanf'? [-Wimplicit-function-declaration]
   10 |                         scanf_s("%d",&num2);
      |                         ^~~~~~~
      |                         scanf
Language: Java

import java.util.*;
import java.util.ArrayList;z
import java.util.Arrays;
import java.util.List;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();
        List<Integer> a = new ArrayList<>();

        for (int i = 0; i < n; i++) {
            a.add(sc.nextInt());
        }
        while (a.size() > 2) {
            Collections.sort(a);
            for (int i = 1; i < a.size(); i++) {
                int hoo = a.get(i) % a.get(0);
                a.set(i, hoo);
            }
            for (int i = 0; i < a.size(); i++) {
                if (a.get(i) == 0) {
                    a.remove(i);
                }
            }
        }
        System.out.println(a.get(0));
    }
}







Compiler output:
Main.java:2: error: class, interface, enum, or record expected
import java.util.ArrayList;z
                           ^
Main.java:4: error: class, interface, enum, or record expected
import java.util.List;
^
Main.java:5: error: class, interface, enum, or record expected
import java.util.Scanner;
^
3 errors
Language: C++

#include <iostream>
#include <vector>

int main(int argc, char ** argv){
  int N;
  std::vector<int> hp;
  std::cin >> N;
  for(int i=0; i < N; i++){
    int tmp;
    std::cin >> tmp;
    hp.push_back(tmp);
  }
  
  int m,cnt;
  while(hp.size() != 1){
    m = *std::min_element(hp.begin(), hp.end());
    for(int i = 0; i < hp.size(); i++){
      if(hp[i] != m) hp[i] = hp[i] % m;
    }
    cnt = 0;
    while(cnt < hp.size()){
      if(hp[cnt] == 0) hp.erase(hp.begin() + cnt);
    }
  }
  
  std::cout << hp[0];
  return 0;
}
      
    
  


Compiler output:
a.cc: In function 'int main(int, char**)':
a.cc:16:15: error: 'min_element' is not a member of 'std'; did you mean 'tuple_element'?
   16 |     m = *std::min_element(hp.begin(), hp.end());
      |               ^~~~~~~~~~~
      |               tuple_element
Language: C++

#include <iostream>
#include <limits>

using namespace std;

void out(int *A,int N){
    for (int i = 0; i < N;i++){
        cout << A[i] << ' ';
    }
    cout << endl;
}

int main(){
    int N;
    cin >> N;
    int hp[N];
    int dead = 0;
    for (int i = 0; i < N; i++)
    {
        cin >> hp[i];
    }
    while (1)
    {
        sort(hp, hp + N);
        //out(hp, N);
        for (int i = dead; i < N - 1; i++)
        {
            for (int j = i+1; j < N;j++){
                hp[j] -= hp[i];
                if(hp[j]<=0){
                    hp[j] = 0;
                    dead++;
                }
                if (dead == N-2)
                {
                    int last = hp[N-1]%hp[i];
                    //cout << hp[N-1] << ' ' << hp[i] << endl;
                    //out(hp, N);
                    if (hp[N-1] == hp[i])
                    {
                        cout << hp[N-1] << endl;
                    }
                    else if (last == 0)
                    {
                        cout << last + hp[i] << endl;
                    }
                    else
                    {
                        cout << last << endl;
                    }
                    return 0;
                }
            }
        }
    }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:9: error: 'sort' was not declared in this scope; did you mean 'short'?
   24 |         sort(hp, hp + N);
      |         ^~~~
      |         short
Language: C++

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

int N, A[100010];
//vector<int> temp;

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

	sort(A, A + N);

	if (A[0] == A[N - 1]) {
		printf("%d\n", A[0]);
		return 0;
	}

	int p = N;
	while (p > 2) {
		for (int i = 1; i < N; i++) {
			if (A[i - 1] != 0 && A[i] != 0)
				A[i - 1] = A[i] % A[i - 1];
			else if (A[i - 1] == 0 && A[i] != 0)
				A[i - 1] = A[i];
			else if (A[i - 1] != 0 && A[i] == 0)
				A[i - 1] = 0;
		}
		p--;
	}

	int a = A[0], b = A[1];
	if (a == 0)
		printf("%d\n", b);
	else if (b == 0)
		printf("%d\n", a);
	else if (a%b == 0)
		printf("%d\n", a / b);
	else if (b%a == 0)
		printf("%d\n", b / a);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
    8 |         scanf_s("%d", &N);
      |         ^~~~~~~
      |         scanf
Language: C++

#include <iostream>
#include <vector>

using namespace std;

int main(int argc, char ** argv){
  int N;
  vector<int> hp;
  cin >> N;
  for(int i=0; i < N; i++){
    int tmp;
    cin >> tmp;
    hp.push_back(tmp);
  }
  
  int m,cnt;
  while(hp.size() != 1){
    m = *std::min_element(hp.begin(), hp.end());
    for(int i = 0; i < hp.size(); i++){
      if(hp[i] != m) hp[i] = hp[i] % m;
    }
    cnt = 0;
    while(cnt < hp.size()){
      if(hp[cnt] == 0) hp.erase(hp.begin() + cnt);
    }
  }
  
  cout << hp[0];
  return 0;
}
      
    
  


Compiler output:
a.cc: In function 'int main(int, char**)':
a.cc:18:15: error: 'min_element' is not a member of 'std'; did you mean 'tuple_element'?
   18 |     m = *std::min_element(hp.begin(), hp.end());
      |               ^~~~~~~~~~~
      |               tuple_element
Language: C++

#include <iostream>

using namespace std;

int main(int argc, char ** argv){
  int N;
  vector<int> hp;
  cin >> N;
  for(int i=0; i < N; i++){
    int tmp;
    cin >> tmp;
    hp.push_back(tmp);
  }
  
  int m,cnt;
  while(hp.size() != 1){
    m = *std::min_element(hp.begin(), hp.end());
    for(int i = 0; i < hp.size(); i++){
      if(hp[i] != m) hp[i] = hp[i] % m;
    }
    cnt = 0;
    while(cnt < hp.size()){
      if(hp[cnt] == 0) hp.erase(hp.begin() + cnt);
    }
  }
  
  cout << hp[0];
  return 0;
}
      
    
  

Compiler output:
a.cc: In function 'int main(int, char**)':
a.cc:7:3: error: 'vector' was not declared in this scope
    7 |   vector<int> hp;
      |   ^~~~~~
a.cc:2:1: note: 'std::vector' is defined in header '<vector>'; this is probably fixable by adding '#include <vector>'
    1 | #include <iostream>
  +++ |+#include <vector>
    2 | 
a.cc:7:10: error: expected primary-expression before 'int'
    7 |   vector<int> hp;
      |          ^~~
a.cc:12:5: error: 'hp' was not declared in this scope
   12 |     hp.push_back(tmp);
      |     ^~
a.cc:16:9: error: 'hp' was not declared in this scope
   16 |   while(hp.size() != 1){
      |         ^~
a.cc:17:15: error: 'min_element' is not a member of 'std'; did you mean 'tuple_element'?
   17 |     m = *std::min_element(hp.begin(), hp.end());
      |               ^~~~~~~~~~~
      |               tuple_element
a.cc:27:11: error: 'hp' was not declared in this scope
   27 |   cout << hp[0];
      |           ^~
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;
  long long int a[n];
  long long int ans=1000000000;
  long long int tmp;
  long long int tmp2;
  int tmp3;
  int tmp4;
  int tmp5;
  long long int max_min=1000000000;
  for(int i=0;i!=n;i++){
    cin >> a[i];
    max_min=min(max_min,a[i]);
  }
  for(int i=0;i!=n;i++){
    for(int j=i+1;j<n;j++){
      tmp = max(a[i],a[j]);
      tmp2 = min(a[i],a[j]);
      tmp3 = tmp%tmp2;
      tmp4 = tmp2-tmp3;
      tmp5 = min(tmp3,tmp4);
      if(tmp5==0){
        continue;
      }
      ans = min(ans,tmp5);
    }
  }
  if(ans==1000000000){
    cout << max_min << endl;
    return 0;
  }
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:30:16: error: no matching function for call to 'min(long long int&, int&)'
   30 |       ans = min(ans,tmp5);
      |             ~~~^~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:30:16: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   30 |       ans = min(ans,tmp5);
      |             ~~~^~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:30:16: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   30 |       ans = min(ans,tmp5);
      |             ~~~^~~~~~~~~~
Language: C++

#include<iostream>

using namespace std;

int main(){

  int n;
  cin >> n;

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

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

  int co=1;

  for(int i=2;i<sqrt(max);i++){
    for(int j=1;i*j<max;j++){
      bool flag=true;
      for(int k=0;k<n;k++){
	if(a[k]%(i*j)!=0){
	  flag=false;
	  break;
	}
      }
      if(flag) co=i*j;
    }
  }

  cout << co << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:22:17: error: 'sqrt' was not declared in this scope
   22 |   for(int i=2;i<sqrt(max);i++){
      |                 ^~~~
Language: C

#include <stdio.h>

int main(void) {
  int i, N, A[100010], min, alleq, alleven;
  alleven = 1;
  alleq = 1;
  scanf("%d", &N);
  for (i=0;i<N;i++) {
    scanf("%d", &A[i]);
    if (A[i] != A[0]) alleq = 0;
  }
  if (alleq) {
    printf("%d\n", A[0]);
  } else {
    denom = 1;
    do {
      denom *= 2;
      for (i=0;i<N;i++) {
        if (A[i] % denom) alleven = 0;
      }
    } while (alleven);
    printf("%d\n", denom/2);
  }
  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:15:5: error: 'denom' undeclared (first use in this function)
   15 |     denom = 1;
      |     ^~~~~
main.c:15:5: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include <iostream>

using namespace std;

int make_ans(int a, int b){
    int ans = b - a;
    b = ans;
    while(a > 0 && b > 0){
       if(a < b) {
           ans = b - a;
           b = ans;
       } else {
           ans = a - b;
           a = ans;
       }
       if(a == b) return ans;
    }
    return ans;
}

int main(){
    int n;
    cin >> n;
    int a[n];
    for(int i = 0; i < n; i++) cin >> a[i];
    sort(a, a+n);
    for(int i = 1; i < n; i++){
        if(a[i] % a[0] != 0) break;
        if(i == n-1){
            cout << a[0] << endl;
            return 0;
        }
    }
    cout << make_ans(a[0], a[1]) << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:26:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   26 |     sort(a, a+n);
      |     ^~~~
      |     short
Language: C++

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

#define rep(i,n) for(signed i=0;i<n;++i)
//#define int long long
#define str string
#define debg(a) cout<<#a<<":"<<a<<endl;
#define vint vector<signed>
#define all(a) a.begin(),a.end()
#define pb(a) push_back(a)
#define yn(a) cout<<((a)?"Yes":"No")<<endl;
#define YN(a) cout<<((a)?"YES":"NO")<<endl;
int cnt[1000001];
vint insu[1000001];
signed main(){
  int n;
  cin>>n;
  int a[n];
  rep(i,n)cin>>a[i];
  sort(a,a+n);
  int ans=a[0];
  rep(i,n){
      rep(j,n){
          if(a[i]%a[j]==0){
              for(int mn=a[j],int c=0;c<10;c++,mn+=a[j]){
                  if(mn%a[0]!=0){
                      ans=min(mn%a[0],ans);
                  }
              }
          }
      }
  }
  cout<<ans;
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:25:31: error: expected unqualified-id before 'int'
   25 |               for(int mn=a[j],int c=0;c<10;c++,mn+=a[j]){
      |                               ^~~
a.cc:25:31: error: expected ';' before 'int'
   25 |               for(int mn=a[j],int c=0;c<10;c++,mn+=a[j]){
      |                               ^~~
      |                               ;
a.cc:25:43: error: expected ')' before ';' token
   25 |               for(int mn=a[j],int c=0;c<10;c++,mn+=a[j]){
      |                  ~                        ^
      |                                           )
a.cc:25:44: error: 'c' was not declared in this scope
   25 |               for(int mn=a[j],int c=0;c<10;c++,mn+=a[j]){
      |                                            ^
a.cc:25:48: error: 'mn' was not declared in this scope; did you mean 'n'?
   25 |               for(int mn=a[j],int c=0;c<10;c++,mn+=a[j]){
      |                                                ^~
      |                                                n
Language: C++

#include<iostream>
#include<vector>
#include<numeric>
using namespace std;
int main(){
    long N;
    cin>>N;
    vector <long> a(N);
    for(int i=0;i<N;++i){
        cin>>a[i];
    }
    long c;
    c=*min_element(a.begin(),a.end());
    long ans=a.at(c);
    long as,gc;
    as=ans;
    for (int i; i<N;++i){
        gc=gcd(as,a[i]);
        if(gc!=as){
            as=gc;
        }
    }
    cout<<as<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:8: error: 'min_element' was not declared in this scope
   13 |     c=*min_element(a.begin(),a.end());
      |        ^~~~~~~~~~~
Language: C++

#include <iostream>
using namespace std;

int main(){
  int n;
  cin >>n;
  
  int a[n];
  for(int i=0;i<n;i++){
    cin >>a[i];
  }
  
  int b[n][n];
  
  int min=10000;
  
  for(int i=0;i<n;i++){
    for(int j=0;j<n;j++){
      if(a[i]!=a[j])b[i][j]=a[i]%a[j]
      else b[i][j]=10000;
      
      if(b[i][j]<min)min=b[i][j];
    }
  }
  cout << min <<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:38: error: expected ';' before 'else'
   19 |       if(a[i]!=a[j])b[i][j]=a[i]%a[j]
      |                                      ^
      |                                      ;
   20 |       else b[i][j]=10000;
      |       ~~~~
Language: C++

#include <stdio.h>
#include <iostream>
#include <cstdlib>
int main() {
  int n,*a,i,j,min=1000000000,tmp,min_sol;

  scanf("%d",&n);

  a=(int *)malloc(sizeof(int)*n);

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

  for(i=0;i<n-1;i++){
      for(j=i+1;j<n;j++){
          if(abs(a[i]-a[j])<min && abs(a[i]-a[j])!=0){
              min=abs(a[i]-a[j]);
          }
      }
  }

  if(min==1000000000){
      printf("%d\n",a[0]);
      return 0;
  }

  min_sol=min;
  for(i=0;i<n-1;i++){
      tmp=a[i]%min;
      if(tmp!=0 && tmp<min_sol){
          min_sol=tmp;
      }
  }

Compiler output:
a.cc: In function 'int main()':
a.cc:34:4: error: expected '}' at end of input
   34 |   }
      |    ^
a.cc:4:12: note: to match this '{'
    4 | int main() {
      |            ^
Language: C++

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

int main(){
  int N,mn,count,ans;
  cin >> N;
  int A[N];
  int B[N];
  mn=1000000000;
  ans=0;
  for(int i=0; i<N; ++i){
    cin >> A[i];
    B[i]=A[i]-A[i-1];
    if(B[i]==0) B[i]=A[i]
    mn=min(mn,A[i]);
    mn=min(mn,B[i]);
  }
  for(int i=mn; i>=1; --i){
    count=0;
    for(int j=0; j<N; ++j){
      int S[N];
      S[j]=A[j]%i;
      if(S[j]==0) count += 1;
    }
    if(count==N){
      ans=i;
      break;
    }
  }
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:26: error: expected ';' before 'mn'
   15 |     if(B[i]==0) B[i]=A[i]
      |                          ^
      |                          ;
   16 |     mn=min(mn,A[i]);
      |     ~~
Language: C++

#include <iostream>
#include <algorithm>
#include <cmath>
#include <limits>
#include <vector>
#include <cstdio>
#include <bits/stdc++.h>
#include <set>
#include <map>
#include <stdio.h>
#include <stack>
#include <queue>
#include <deque>
#include <numeric>
#include <bits/stdc++.h>
#include <utility>
#include <iomanip>

#define ALL(obj) (obj).begin(), (obj).end()
#define FOR(i,a,b) for(int i = (a); i < (b); i++)
#define RFOR(i,a,b) for(int i = (a); (b) <= i; i--)
#define REP(i,n) for(int i = 0; i < (n); i++)
#define RREP(i,n) for(int i = n; n <= i; i--)
#define ABS(a) ((a < 0) ? ((-1)*(a)) : (a))
#define elif else if
#define MOD 1000000007
#define INF (1<<29)

using namespace std;

#define ld long double
#define ll long long

map <int ,int> mpa,mpb;
typedef pair<ll, ll> P;
priority_queue<P, vector<P>, greater<P>> pque;

ll gcd(ll m, ll n){
  // 引数に０がある場合は０を返す
	if ( ( 0 == m ) || ( 0 == n ) )
		return 0;

	// ユークリッドの方法
	while( m != n )
	{
		if ( m > n ) m = m - n;
		else         n = n - m;
	}
	return m;
}//gcd

ll lcm( ll m, ll n )
{
	// 引数に０がある場合は０を返す
	if ( ( 0 == m ) || ( 0 == n ) )
		return 0;
	return ((m / gcd(m, n)) * n); // lcm = m * n / gcd(m,n)
}//lcm

// a x + b y = gcd(a, b)
int extgcd(int a, int b, int &x, int &y) {
  int g = a; x = 1; y = 0;
  if (b != 0) g = extgcd(b, a % b, y, x), y -= (a / b) * x;
  return g;
}
int invMod(int a, int m) {
  int x, y;
  if (extgcd(a, m, x, y) == 1) return (x + m) % m;
  else                         return 0; // unsolvable
}


int main(){
  ios::sync_with_stdio(false);
  cin.tie(NULL);
  ll N;
  cin >> N;
  ll A[1001000];
  ll t;
  for(int i=0;i<N;i++){
    cin >> t;
    A[i]=t;
  }
  sort(A,A+N);
  ll ans=A[0];
  bool flag=true;
  bool flag2=false;
  while(true){
    for(int i=0;i<N;i++){
      if(i==0 && flag=true){
        flag=false;
        continue;
      }
      if(A[i]%ans!=0){
        ans=A[i]%ans;
        A[i]=ans;
      }else{
        A[i]==0;
      }
      if(ans==1LL)break;
    }
    for(int i=0;i<N;i++){
      if(A[i]>0){
        break;
      }
      if(A[i]==0 && i==N-1){
        flag2=true;
      }
    }
    if(flag2)break;
  }
  cout << ans << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:90:15: error: lvalue required as left operand of assignment
   90 |       if(i==0 && flag=true){
      |          ~~~~~^~~~~~~
Language: C++

#include <stdio.h>
#include <stdlib.h>
int main(void){
    int tekicount;
    int teki[100000];
    int count=0;
    int count2;
    int ransuu;
    int rannsuu2;
    int hoji;
    int keisan=0;
    scanf("%d",&tekicount);
    for(count=0;;count++){
        if(scanf("%d",&teki[count])==1){
            
        }
        else{
            break;
        }
    }
for(;;){
    yarinaoshi:
    rannsuu=rand()%tekicount+1;
    rannsuu2=rand()%tekicount+1;
    if(rannsuu==rannsuu2){
        goto yarinaoshi;
    }
    teki[rannsuu2]=teki[ransuu2]-teki[ransuu];
    for(count2=0;count2==tekicount-1;count2++){
        if(teki[count2]<=0){
            hoji++;
        }
    }
    if(hoji==tekicount-1){
        break;
    }
    
}
count=0;
for(count=0;;count++){
    if(teki[count]>0){
        printf("%d",teki[count]);
        break;
    }
}


    
}
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:23:5: error: 'rannsuu' was not declared in this scope; did you mean 'rannsuu2'?
   23 |     rannsuu=rand()%tekicount+1;
      |     ^~~~~~~
      |     rannsuu2
a.cc:28:25: error: 'ransuu2' was not declared in this scope; did you mean 'rannsuu2'?
   28 |     teki[rannsuu2]=teki[ransuu2]-teki[ransuu];
      |                         ^~~~~~~
      |                         rannsuu2
a.cc: At global scope:
a.cc:50:1: error: expected unqualified-id before 'return'
   50 | return 0;
      | ^~~~~~
a.cc:51:1: error: expected declaration before '}' token
   51 | }
      | ^
Language: C

#include <stdio.h>

int compare_int(const void *a, const void *b){
    return *(int *)a-*(int *)b;
}

int main(void){
    int N,array[100005]={},array2[100005]={};
    scanf("%d",&N);
    for(int i=0;i<N;i++) scanf("%d",&array[i]);
    qsort(array,N,sizeof(int),compare_int);
    for(int i=0;i<N-1;i++) array2[i]=array[i+1]-array[i];
    int min=1000000000;
    for(int i=0;i<N-1;i++){
        if(array2[i]<min) min=array2[i];
    }
    //if(min==0) printf("%d\n",array[0]);
    else printf("%d\n",array[N-1]%min);
    return 0;
}


Compiler output:
main.c: In function 'main':
main.c:11:5: error: implicit declaration of function 'qsort' [-Wimplicit-function-declaration]
   11 |     qsort(array,N,sizeof(int),compare_int);
      |     ^~~~~
main.c:18:5: error: 'else' without a previous 'if'
   18 |     else printf("%d\n",array[N-1]%min);
      |     ^~~~
Language: C++

#include<iostream>
#include<vector>

using namespace std;

int minimum(int n,vector<int> a,int bef){
  int min=bef;
  for(int i=0;i<n;i++){
    if(a[i]>0&&a[min]>a[i]) min=i;
  }
  return min;
}

int main(){

  int n;
  cin >> n;
  int tmp=n;

  vector<int> a;
  a.resize(n);
  for(int i=0;i<n;i++){
    cin >> a[i];
  }

  int alive;

  while(tmp!=1){
    alive=minimum((int)(a.size()),a,alive);
    for(int i=0;i<(int)(a.size());i++){
      if(a[i]>0&&i!=alive){
	a[i]-=a[alive];
	if(a[i]<=0){
	  tmp--;
	  a.remove(i);
	  if(alive>i) alive--;
	}
      }
    }
  }

  cout << a[0] << endl;

  return 0;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:35:13: error: 'class std::vector<int>' has no member named 'remove'
   35 |           a.remove(i);
      |             ^~~~~~
Language: C++

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

int main() {
	int n, a[100001], min, num, tmp, hoge, zero[100001];
	cin >> n;
	num = n - 1;
	for (int i = 0; i<n; i++)cin >> a[i];
	for (int i = 0; i<n - 1; i++) {
		//zero[i] = 0;
		for (int j = n - 1; j>i; j--) {
			if (a[j - 1]<a[j]) {
				tmp = a[j];
				a[j] = a[j - 1];
				a[j - 1] = tmp;
			}
		}
	}
	while (num != 1) {
		min = a[num];
		hoge = 0;
		for (int i = 0; i<num; i++) {
			if (a[i] % a[num] == 0) {
				a[i] = 0;
				//zero[i] = 1;
				hoge++;
			}
			else {
				a[i] = a[i] % a[num];
			}
		}
		for (int i = 0; i<num - 1; i++) {
			for (int j = num - 1; j>i; j--) {
				if (a[j - 1]<a[j]) {
					tmp = a[j];
					a[j] = a[j - 1];
					a[j - 1] = tmp;
				}
			}
		}
		num = num - hoge;
	}
	cout << a[0] << endl;
}


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

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

int main() {
  int n;
  cin >> n;
  vector<long long> v(n);
  for (int i = 0; i < n; i++) {
    cin >> v[i];
  }

  sort(v.begin(), v.end());
  long long ans = v[0];
  long long ansid = 0;
  while (true) {
    long long cnt = 0;
    for (int i = 0; i < n; i++) {
      if (v[i] > 0) {
        cnt++;
      }
      if (cnt == 1) {
        ans = v[i];
        ansid = i;
      }
    }
    if (cnt == 1) {
      break;
    }

    for (int i = 0; i < n; i++) {
      if (v[i] > 0 && ansid != i) {
        long long x = v[i]/ans;
        v[i] -= x*ans;
      }
    }

    sort(v.begin(), v.end());
  }

  cout << ans << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:3: error: 'sort' was not declared in this scope; did you mean 'short'?
   14 |   sort(v.begin(), v.end());
      |   ^~~~
      |   short
Language: C++

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

using ll = int64_t;
#define int ll

#define FOR(i, a, b) for (int i = int(a); i < int(b); i++)
#define REP(i, b) FOR(i, 0, b)
#define MP make_pair
#define PB push_back
#define EB emplace_back
#define ALL(x) x.begin(), x.end()
auto &errStream = cerr;
#ifdef LOCAL
#define cerr (cerr << "-- line " << __LINE__ << " -- ")
#else
class CerrDummy {
} cerrDummy;
template <class T> CerrDummy &operator<<(CerrDummy &cd, const T &) {
  return cd;
}
using charTDummy = char;
using traitsDummy = char_traits<charTDummy>;
CerrDummy &operator<<(CerrDummy &cd,
    basic_ostream<charTDummy, traitsDummy> &(
      basic_ostream<charTDummy, traitsDummy> &)) {
  return cd;
}
#define cerr cerrDummy
#endif
#define REACH cerr << "reached" << endl
#define DMP(x) cerr << #x << ":" << x << endl
#define ZERO(x) memset(x, 0, sizeof(x))
#define ONE(x) memset(x, -1, sizeof(x))

using pi = pair<int, int>;
using vi = vector<int>;
using ld = long double;

template <class T, class U>
ostream &operator<<(ostream &os, const pair<T, U> &p) {
  os << "(" << p.first << "," << p.second << ")";
  return os;
}

template <class T> ostream &operator<<(ostream &os, const vector<T> &v) {
  os << "{";
  REP(i, (int)v.size()) {
    if (i)
      os << ",";
    os << v[i];
  }
  os << "}";
  return os;
}

ll read() {
  ll i;
  scanf("%" SCNd64, &i);
  return i;
}

void printSpace() { printf(" "); }

void printEoln() { printf("\n"); }

void print(ll x, int suc = 1) {
  printf("%" PRId64, x);
  if (suc == 1)
    printEoln();
  if (suc == 2)
    printSpace();
}

string readString() {
  static char buf[3341000];
  scanf("%s", buf);
  return string(buf);
}

char *readCharArray() {
  static char buf[3341000];
  static int bufUsed = 0;
  char *ret = buf + bufUsed;
  scanf("%s", ret);
  bufUsed += strlen(ret) + 1;
  return ret;
}

template <class T, class U> void chmax(T &a, U b) {
  if (a < b)
    a = b;
}

template <class T, class U> void chmin(T &a, U b) {
  if (b < a)
    a = b;
}

template <class T> T Sq(const T &t) { return t * t; }

#define CAPITAL
void Yes(bool ex = true) {
#ifdef CAPITAL
  cout << "YES" << endl;
#else
  cout << "Yes" << endl;
#endif
  if (ex)
    exit(0);
}
void No(bool ex = true) {
#ifdef CAPITAL
  cout << "NO" << endl;
#else
  cout << "No" << endl;
#endif
  if (ex)
    exit(0);
}

const ll infLL = LLONG_MAX / 3;

#ifdef int
const int inf = infLL;
#else
const int inf = INT_MAX / 2 - 100;
#endif

signed main() {
  int N = read();
  vi A;
  REP(i, N) {
    A.PB(read());
    if (abs(A[i] - A[i - 1]) < diff)
      diff = abs(A[i] - A[i - 1]);
  }
  sort(ALL(A));
  A.erase(unique(ALL(A)), A.end());

  if(A.size() == 1) {
    print(A[0]);
    return 0;
  }

  int ans;
  if(A[0] % 2 == 0 && A[1] % 2 == 0)
    ans = 2;
  else
    ans = 1;

  print(min(ans, diff));

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:136:32: error: 'diff' was not declared in this scope
  136 |     if (abs(A[i] - A[i - 1]) < diff)
      |                                ^~~~
a.cc:153:18: error: 'diff' was not declared in this scope
  153 |   print(min(ans, diff));
      |                  ^~~~
Language: C++

#include<algorithm>
using namespace std;
int main(){
    int n;
     cin >> n;
     int a[n];
     int i,j;
     for(i=0;i<n;i++){
         cin >> a[i];
     }
     sort(a,a+n,greater<int>());
     int rest;
     for(i=0;i<n-1;i++){
         for(j=i+1;j<n;j++){
             if(i!=j){
                 rest=a[i]%a[j];
                 if(rest!=0 && rest < a[i]) a[i]=rest;
             }
         }
     }
     int min =a[0];
     for(i=1;i<n;i++){
       if(min>a[i]) min=a[i];
     }
     cout << min << endl; 
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:6: error: 'cin' was not declared in this scope
    5 |      cin >> n;
      |      ^~~
a.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    1 | #include<algorithm>
  +++ |+#include <iostream>
    2 | using namespace std;
a.cc:11:17: error: 'greater' was not declared in this scope
   11 |      sort(a,a+n,greater<int>());
      |                 ^~~~~~~
a.cc:11:25: error: expected primary-expression before 'int'
   11 |      sort(a,a+n,greater<int>());
      |                         ^~~
a.cc:25:6: error: 'cout' was not declared in this scope
   25 |      cout << min << endl;
      |      ^~~~
a.cc:25:6: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:25:21: error: 'endl' was not declared in this scope
   25 |      cout << min << endl;
      |                     ^~~~
a.cc:2:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
    1 | #include<algorithm>
  +++ |+#include <ostream>
    2 | using namespace std;
Language: C++

#include<iostream>
#include<algorithm>
using namespace std;
int live[100010];
int p[100010];
int gcd(int a,int b)
{
	if(!a || !b)
		return max(a, b);
	else 
	{
		for(int t; t = a % b; x = y, y = t);
		return t;
	}
}
int main()
{
	int n;
	cin>>n;
	for(int i=1;i<=n;i++)
	{
		cin>>live[i];
	}
	for(int i=1;i<=n-1;i++)
	{
		live[i+1]=gcd(live[i],live[i+1]);
		//cout<<gcd(live[i],live[i+1]); 
	}
	cout<<live[n];
	return 0;
} 

Compiler output:
a.cc: In function 'int gcd(int, int)':
a.cc:12:39: error: 'x' was not declared in this scope
   12 |                 for(int t; t = a % b; x = y, y = t);
      |                                       ^
a.cc:12:43: error: 'y' was not declared in this scope
   12 |                 for(int t; t = a % b; x = y, y = t);
      |                                           ^
a.cc:13:24: error: 't' was not declared in this scope
   13 |                 return t;
      |                        ^
Language: C++

/*
ID: seekho
PROG: friday
LANG: C++14                 
*/
/* LANG can be C++11 or C++14 for those more recent releases */

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp> // Common file
#include <ext/pb_ds/tree_policy.hpp> // Including tree_order_statistics_node_update

using namespace std;
using namespace __gnu_pbds;

//find_by_order gives kth-largest element
//order_of_key gives the number of items in the set that are strictly smaller!!

// OT.find_by_order(k-1)
// 
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

#define db(x) cerr << #x << "=" << x << endl
#define db2(x, y) cerr << #x << "=" << x << "," << #y << "=" << y << endl
#define db3(x, y, z) cerr << #x << "=" << x << "," << #y << "=" << y << "," << #z << "=" << z << endl
#define db4(x, y, z, w) cerr << #x << "=" << x << "," << #y << "=" << y << "," << #z << "=" << z << "," << #w << "=" << w << endl
#define ll long long
#define pb push_back
#define eb emplace_back
#define all(x) (x).begin(), (x).end()
#define mp make_pair
#define X first
#define Y second
#define sz(x) (int)((x).size())
#define pii pair<int,int>
#define MOD (ll)(998244353)
#define rep(i, n)    for(int i = 0; i < (n); ++i)
#define repA(i, a, n)  for(int i = a; i <= (n); ++i)
#define repD(i, a, n)  for(int i = a; i >= (n); --i)
#define trav(a, x) for(auto& a : x)
typedef vector<int> vi;
#define inf (ll)(1e18)
#define double long double
#define int long long

//////////////////////
// const int N = 100005;

int32_t main() {

    ios::sync_with_stdio(false);
    cin.tie(0); 
    cout.tie(0);
	
	int n;
	cin >> n;

	int te, lt = -1;
	int diff = 0, ev = 0, odd = 0;
	vector<int> a(n);
	rep(i,n) {
		cin >> te;
		if(te != lt) diff++;
		if(t qe%2) odd++;
		else ev++;
		lt = te;
		a[i] = te;
	}
	sort(all(a));
	if(diff == 1) {
		cout << te << '\n';
	}   
	else {
		if(ev != 0 and odd != 0) {
			cout << "1\n";
		}
		else if(odd != 0) {
			// cout << "1\n";
			repA(i,1,n-1) {
				if(a[i]%a[0]) {
					cout << "1\n";
					return 0;
				}
			}
			cout << a[0] << "\n";
		}
		else {
			repA(i,1,n-1) {
				if(a[i]%a[0]) {
					cout << "2\n";
					return 0;
				}
			}
			cout << a[0] << "\n";
		}
	}
}

Compiler output:
a.cc: In function 'int32_t main()':
a.cc:63:20: error: 't' was not declared in this scope
   63 |                 if(t qe%2) odd++;
      |                    ^
a.cc:63:21: error: expected ')' before 'qe'
   63 |                 if(t qe%2) odd++;
      |                   ~ ^~~
      |                     )
Language: C++

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

int main(){
  int N,mx,count,ans;
  long int mn;
  cin >> N;
  int A[N];
  mx=0;
  mn=100000000;
  ans=0;
  for(int i=0; i<N; ++i){
    cin >> A[i];
    mx=max(mx,A[i]);
    mn=min(mn,A[i]);
  }
  for(int i=mn; i>=1; --i){
    count=0;
    for(int j=0; j<N; ++j){
      int S[N];
      S[j]=A[j]%i;
      if(S[j]==0) count += 1;
    }
    if(count==N){
      ans=i;
      break;
    }
  }
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:16:11: error: no matching function for call to 'min(long int&, int&)'
   16 |     mn=min(mn,A[i]);
      |        ~~~^~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:16:11: note:   deduced conflicting types for parameter 'const _Tp' ('long int' and 'int')
   16 |     mn=min(mn,A[i]);
      |        ~~~^~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_algo.h:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:16:11: note:   mismatched types 'std::initializer_list<_Tp>' and 'long int'
   16 |     mn=min(mn,A[i]);
      |        ~~~^~~~~~~~~
Language: C++

#include <iostream>
using namespace std;

long long GCD(long long a, long long b) {
    return b ? GCD(b, a%b) : a;
}

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

    long long res = A[0];
    for (int i = 0; i < N; ++i) {
        res = GCD(res, A[i]);
    }
    cout << res << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:5: error: 'vector' was not declared in this scope
   10 |     vector<long long> A(N);
      |     ^~~~~~
a.cc:2:1: note: 'std::vector' is defined in header '<vector>'; this is probably fixable by adding '#include <vector>'
    1 | #include <iostream>
  +++ |+#include <vector>
    2 | using namespace std;
a.cc:10:12: error: expected primary-expression before 'long'
   10 |     vector<long long> A(N);
      |            ^~~~
a.cc:11:40: error: 'A' was not declared in this scope
   11 |     for (int i = 0; i < N; ++i) cin >> A[i];
      |                                        ^
a.cc:13:21: error: 'A' was not declared in this scope
   13 |     long long res = A[0];
      |                     ^
Language: C++

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

int main(){
  int N,mx,mn,count,ans;
  cin >> N;
  int A[N];
  mx=0;
  long mn=100000000;
  ans=0;
  for(int i=0; i<N; ++i){
    cin >> A[i];
    mx=max(mx,A[i]);
    mn=min(mn,A[i]);
  }
  for(int i=mn; i>=1; --i){
    count=0;
    for(int j=0; j<N; ++j){
      int S[N];
      S[j]=A[j]%i;
      if(S[j]==0) count += 1;
    }
    if(count==N){
      ans=i;
      break;
    }
  }
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:8: error: conflicting declaration 'long int mn'
   10 |   long mn=100000000;
      |        ^~
a.cc:6:12: note: previous declaration as 'int mn'
    6 |   int N,mx,mn,count,ans;
      |            ^~
Language: C++

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

int main(void){
  int n, a[100000], g;
  cin>>n;
  for (int i=0;i<n;i++){
    cin>>a[i];
    if (i==0) g=a[0];
    else g=gcd(g,a[i]);
  }
  cout<<g<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:12: error: 'gcd' was not declared in this scope
   11 |     else g=gcd(g,a[i]);
      |            ^~~