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

#include<stdio.h>
#include<math.h>

int main(){
    int num, i;
    long int input[100000];
    long int ans = 0;
    long int min = 1000000000;
    int count = 0;

    scanf("%d", &num);
    for(i=0; i<num; i++){
        scanf("%ld", &input[i]);
        ans = ans + abs(input[i]);
        if(input[i] < 0){
            count += 1;
        }
        if(min > abs(input[i])){
            min = abs(input[i]);
        }
    }
    
    if((count%2)==0){
        printf("%ld", ans);
    } else{
        printf("%ld", (ans-min*2);
    }

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:14:21: error: implicit declaration of function 'abs' [-Wimplicit-function-declaration]
   14 |         ans = ans + abs(input[i]);
      |                     ^~~
main.c:3:1: note: include '<stdlib.h>' or provide a declaration of 'abs'
    2 | #include<math.h>
  +++ |+#include <stdlib.h>
    3 | 
main.c:14:30: warning: 'abs' argument 1 type is 'long int' where 'int' is expected in a call to built-in function declared without prototype [-Wbuiltin-declaration-mismatch]
   14 |         ans = ans + abs(input[i]);
      |                         ~~~~~^~~
<built-in>: note: built-in 'abs' declared here
main.c:18:27: warning: 'abs' argument 1 type is 'long int' where 'int' is expected in a call to built-in function declared without prototype [-Wbuiltin-declaration-mismatch]
   18 |         if(min > abs(input[i])){
      |                      ~~~~~^~~
<built-in>: note: built-in 'abs' declared here
main.c:19:28: warning: 'abs' argument 1 type is 'long int' where 'int' is expected in a call to built-in function declared without prototype [-Wbuiltin-declaration-mismatch]
   19 |             min = abs(input[i]);
      |                       ~~~~~^~~
<built-in>: note: built-in 'abs' declared here
main.c:26:34: error: expected ')' before ';' token
   26 |         printf("%ld", (ans-min*2);
      |               ~                  ^
      |                                  )
main.c:26:35: error: expected ';' before '}' token
   26 |         printf("%ld", (ans-min*2);
      |                                   ^
      |                                   ;
   27 |     }
      |     ~
Language: C++

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

void main() {
	int n, a[100010], pmin, mmin, mnum;
	pmin = 1000000010;
	mmin = -1000000010;
	mnum = 0;
	cin >> n;
	for (int i = 0; i < n; i++) {
		cin >> a[i];
	}
	for (int i = 0; i < n; i++) {
		if (a[i] >= 0) {
			if (a[i] < pmin) pmin = a[i];
		}
		else {
			mnum++;
			if (a[i] > mmin) mmin = a[i];
		}
	}
	int ans = 0;

	if (mnum % 2 == 0) {
		for (int i = 0; i < n; i++) {
			ans += abs(a[i]);
		}
	}
	else {
		if (n == mnum) {
			for (int i = 0; i < n; i++) {
				ans += abs(a[i]);
			}
			ans = ans - 2 * mmin;
		}
		else {
			for (int i = 0; i < n; i++) {
				ans += abs(a[i]);
			}
			int ansa, ansb;
			ansa = ans - 2 * mmin;
			ansb = ans - 2 * pmin;
			ans = max(ansa, ansb);
		}
	}
	cout << ans <<endl;
}

Compiler output:
a.cc:6:1: error: '::main' must return 'int'
    6 | void main() {
      | ^~~~
Language: C++

#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<cmath>
#include<map>
#include <limits>
#include <numeric>
#include <type_traits>
using namespace std;


int main()
{
	int n;
	cin >> n;
	long long int a[99999];
	int f = 0;
	int ans = 0;
	for (int i = 0; i < n; i++)
	{
		cin >> a[i];
		if (a[i]<0)
		{
			f++;
		}
		ans += abs(a[i]);
	}
	
	if (f % 2 == 0)
	{
		cout << ans << endl;
	}
	else
	{
		sort(a, a + n);
		cout << ans - 2 * (abs(a[0]);
	}

	
}


Compiler output:
a.cc: In function 'int main()':
a.cc:37:45: error: expected ')' before ';' token
   37 |                 cout << ans - 2 * (abs(a[0]);
      |                                   ~         ^
      |                                             )
Language: C++

#include <iostream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <cstdlib>
#include <queue>
#include <list>
#include <string>
using namespace std;

typedef long long ll;
typedef pair<int, int> P;
const int MOD = 998244353;

int gcd(int a, int b){
  if(b == 0) return a;
  return gcd(b, a%b);
}

int main()
{
  int N,minuscount = 0;
  ll abssum=0,absmin,num;
  cin >> N >> num;
  abssum = absmin = llabs(num);
  for(int i=1;i<N;i++){
    cin >> num;
    abssum += llabs(num);
    if(absmin > llabs(num)) absmin = llabs(num);
    if(num < 0) minuscount++;
  }
  if(abscount %2 == 0) cout << abssum;
  else cout << abssum - absmin*2;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:32:6: error: 'abscount' was not declared in this scope
   32 |   if(abscount %2 == 0) cout << abssum;
      |      ^~~~~~~~
Language: C

#include<stdio.h>

int main(void){
  int i, n, min = 1000000000;
  int sum = 0;
  
  scanf("%d", &n);
  int a[n], m[n];
  for(i = 0;i < n;i++){
    scanf("%d", &a[i]);
    if(a[i] < 0){
      m++;
      m[i] = ;
    }
    else{
      if(min > a[i]){
        min = a[i];
      }
    }
  }
  if(m != 0){
    m
    
  }
  else{
    for(i = 0;i < n;i++){
      sum += a[i];
    }
    printf("%d\n", sum);
    return 0;
  }

Compiler output:
main.c: In function 'main':
main.c:12:8: error: lvalue required as increment operand
   12 |       m++;
      |        ^~
main.c:13:14: error: expected expression before ';' token
   13 |       m[i] = ;
      |              ^
main.c:22:6: error: expected ';' before '}' token
   22 |     m
      |      ^
      |      ;
   23 | 
   24 |   }
      |   ~   
main.c:31:3: error: expected declaration or statement at end of input
   31 |   }
      |   ^
Language: Java

import java.util.*;
import java.lang.Math;
import Java.lang.Integer;

public class Main {
  
  private int sum = Integer.MIN_VALUE;
  private int size;
  
  public Main() {
  }
  
  public void getSum (int[] num, int index, int temp) {
    if (index == this.size - 1) {
      sum = Math.min(temp + num[index], this.sum);
      return;
    }
    
    getSum(num, index++, temp+num[index]);
    
    num[index] = -num[index];
    num[index + 1] = -num[index + 1];
    
    getSum(num, index++, temp+num[index]);
    num[index] = -num[index];
    num[index + 1] = -num[index + 1];
    
  }
    
  public static void main(String[] args) {
    
    Scanner scan = new Scanner(System.in);
    
    int size = scan.nextInt();
    int[] num = new int[size];
	
    for(int i = 0; i < size; i++) {
      num[i] = scan.nextInt();
    }
    
    Main obj = new Main();
    obj.size = size;
    obj.getSum(num, 0, 0);
    
    System.out.println(obj.sum);
    
  }
}


Compiler output:
Main.java:3: error: package Java.lang does not exist
import Java.lang.Integer;
                ^
1 error
Language: Java

import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
        long[] b = new long[a];
      long[] c = new long[a];
        long sum = 0;
        boolean check = false;
		for(int i=0; i<a; i++){
          b[i] = sc.nextLong();
          c[i] = sc.nextLong();
        }
        for(int i=a-1; i>0; i--){
          if(check){
            if(b[i] + b[i-1] < -(b[i] + b[i-1])){
            b[i] = -b[i];
            b[i-1] = -b[i-1];
            }
            else if(c[i] + b[i-1] < -(c[i] + b[i-1])){
              b[i] = -c[i];
              b[i-1] = -b[i-1];
            }
          }
          }
          if(!check && b[i] + b[i-1] < -(b[i] + b[i-1])){
            b[i] = -b[i];
            b[i-1] = -b[i-1];
            check = false;
          }
          else if(b[i] + b[i-1] == -(b[i] + b[i-1])){
            c[i] = -c[i];
            c[i-1] = -c[i-1];
            check = true;
          }
          else check = false;
        }
        for(int i=0; i<a; i++){
          sum += b[i]; 
        }
		System.out.println(sum);
	}
}

Compiler output:
Main.java:38: error: illegal start of type
        for(int i=0; i<a; i++){
        ^
Main.java:38: error: > or ',' expected
        for(int i=0; i<a; i++){
                        ^
Main.java:38: error: <identifier> expected
        for(int i=0; i<a; i++){
                           ^
Main.java:41: error: <identifier> expected
		System.out.println(sum);
		                  ^
Main.java:41: error: <identifier> expected
		System.out.println(sum);
		                      ^
Main.java:43: error: class, interface, enum, or record expected
}
^
6 errors
Language: C++

#include <iostream>
#include <cstring>
#include <algorithm>
#include <vector>
#include <string>
#include <math.h>
#include <iomanip>
#include <limits>
#include <list>
#include <queue>
#include <tuple>
#include <map>
#include <set>
#include <sstream>
#include <bitset>
#include <string>
using namespace std;
#define MOD (long long int)(1e9+7)
#define ll long long int
#define rep(i,n) for(int i=0; i<(int)(n); i++)
#define reps(i,n) for(int i=1; i<=(int)(n); i++)
#define REP(i,n) for(int i=n-1; i>=0; i--)
#define REPS(i,n) for(int i=n; i>0; i--)
#define INF (int)(1123456789)
#define LINF (long long int)(112345678901234567)

int main(void){
	int N;	cin >> N;
  int A[N];

  int ans = 0;
  int cnt = 0;
  int mi = INF;

  rep(i,N)  {
    int a;  cin >> a;
    A[i] = a;
    if (a<0)  cnt++; a*=-1;
    mi = min(mi,a);
  }
  // int idx = 0;
  // rep(i,N)  {
  //   int a = A[i];
  //   cout << a << ' ';
  //   if ((a < 0) && (i != N-1))  a *= -1;
  //   else{
  //     if (i != N-1) idx = i;
  //   }
  //   if (i == N-1) {
  //     if (N-1-idx % 2 == 0) {
  //         if (a < 0)  a *= -1;
  //       }
  //     }
  //   cout << a << endl;
  //   ans += a;
  // }
  // cout << endl;

  rep(i,N)  {
    int x;
    if (A[i] < 0) x = a*(-1);
    else x = a;
  }

  if (cnt%2 == 1) ans -= mi*2;

  cout << ans << endl;





	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:61:23: error: 'a' was not declared in this scope
   61 |     if (A[i] < 0) x = a*(-1);
      |                       ^
a.cc:62:14: error: 'a' was not declared in this scope
   62 |     else x = a;
      |              ^
Language: C++

#include <bits/stdc++.h>
#include <vector>
#include <string.h>
using namespace std;
#define rep(i,n) for(int i=0; i<n; i++)
int main(){
 int ans=0; 
 int N,a;
   cin>>N;
 vector<int> A(N);


  for (int i = 0; i < N; i++) {
    cin >> A.at(i);
  }
  
  for (int i = 0; i < N; i++) {
   if(A.at(i+1)<A.at(i)){
     a=A.at(i)
  A.at(i)=A.at(i+1);
  A.at(i+1)=A.at(i);
   }
  }

  A.at(1)=A.at(0)*-1;
  A.at(2)=A.at(1)*-1;
  
   for (int i = 0; i < N; i++) {
   ans=ans+A.at(i);
   }
  
cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:15: error: expected ';' before 'A'
   19 |      a=A.at(i)
      |               ^
      |               ;
   20 |   A.at(i)=A.at(i+1);
      |   ~
Language: C++

#include <iostream>
#include <vector>
#include <cstdlib>

using namespace std;

int main(){
    int n;
    vector<int> a;
    int min_a = INT_MAX;
    int min_i;

    cin >> n;
    for(int i=0; i<n; i++){
        int in;
        cin >> in;
        a.push_back(in);
        if(abs(in) < min_a){
            min_i = i;
        }
    }

    a.erase(a.begin()+min_i);
    int out = 0;

    for(int i=0; i<n-1; i++){
        out += abs(a[i]);
    }

    cout << out << endl;
    return 0;

}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:17: error: 'INT_MAX' was not declared in this scope
   10 |     int min_a = INT_MAX;
      |                 ^~~~~~~
a.cc:4:1: note: 'INT_MAX' is defined in header '<climits>'; this is probably fixable by adding '#include <climits>'
    3 | #include <cstdlib>
  +++ |+#include <climits>
    4 |
Language: Java

import java.util.*;
import java.lang.Math;
import Java.lang.Integer;

public class Main {
  
  private int sum = INTEGER.MIN_VALUE;
  private int size;
  
  public Main() {
  }
  
  public void getSum (int[] num, int index, int temp) {
    if (index == this.size - 1) {
      sum = Math.min(temp + num[index], this.sum);
      return;
    }
    
    getSum(num, index++, temp+num[index]);
    
    num[index] = -num[index];
    num[index + 1] = -num[index + 1];
    
    getSum(num, index++, temp+num[index]);
    num[index] = -num[index];
    num[index + 1] = -num[index + 1];
    
  }
    
  public static void main(String[] args) {
    
    Scanner scan = new Scanner(System.in);
    
    int size = scan.nextInt();
    int[] num = new int[size];
	
    for(int i = 0; i < size; i++) {
      num[i] = scan.nextInt();
    }
    
    Main obj = new Main();
    obj.size = size;
    obj.getSum(num, 0, 0);
    
    System.out.println(obj.sum);
    
  }
}


Compiler output:
Main.java:3: error: package Java.lang does not exist
import Java.lang.Integer;
                ^
Main.java:7: error: cannot find symbol
  private int sum = INTEGER.MIN_VALUE;
                    ^
  symbol:   variable INTEGER
  location: class Main
2 errors
Language: C++

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


int gcd( int m, int 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


int main(void) {
    int n;
    cin >> n;
    int a[n];
    int flag = 0;
    int max = 0;
    int max_num = 0;
    for (int i=0; i < n; i++) {
        cin >> a[i];
        if (a[i] > max)
            max = a[i];
        if (i == 2) {
            if (gcd(a[0], a[1]) <= 100000 && gcd(a[1], a[2]) <= 100000 && gcd(a[0], a[2]) <= 100000)
                max_num = max(max(a[0], a[1]), a[2]);
        }
    }


    if (flag == 0) {
        for (int i=max; i > 0; i--) {
            int cnt = 0;
            int divide_cnt = 0;
            for (int k = 0; k < n; k++) {
                if (a[k] % i == 0) {
                    cnt += 1;
                } else {
                    divide_cnt += 1;
                }
                if (divide_cnt >= 2) {
                    cnt = 0;
                    break;
                }
            }
            if ((cnt == n) || (cnt + 1 == n)) {
                cout << i << endl;
                break;
            }
        }
    } else {
        for (int i=max_num; i > 0; i--) {
            int cnt = 0;
            int divide_cnt = 0;
            for (int k = 0; k < n; k++) {
                if (a[k] % i == 0) {
                    cnt += 1;
                } else {
                    divide_cnt += 1;
                }
                if (divide_cnt >= 2) {
                    cnt = 0;
                    break;
                }
            }
            if ((cnt == n) || (cnt + 1 == n)) {
                cout << i << endl;
                break;
            }
        }
    }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:37:34: error: 'max' cannot be used as a function
   37 |                 max_num = max(max(a[0], a[1]), a[2]);
      |                               ~~~^~~~~~~~~~~~
a.cc:37:30: error: 'max' cannot be used as a function
   37 |                 max_num = max(max(a[0], a[1]), a[2]);
      |                           ~~~^~~~~~~~~~~~~~~~~~~~~~~
Language: C++

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

int main(void){
  int N,min=0,ansmin,ans=0;
  cin>>N;
  vector<int> A(N);
  vector<int> AZB(N);
  for(int i=0;i<N;i++){
    cin>>A.at(i);
    AZB.at(i)=abz(A.at(i));
    if(A.at(i)<0) min++;
  }
  if(min%2==0){
    for(int i=0;i<N;i++) ans+=AZB.at(i);
    cout<<ans<<endl;
    return 0;
  }
  else{
    ansmin=0;
    
  }
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:15: error: 'abz' was not declared in this scope; did you mean 'abs'?
   12 |     AZB.at(i)=abz(A.at(i));
      |               ^~~
      |               abs
Language: C

#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

int
main(void)
{
        int N;
        int minus = 0;
        uint64_t sum = 0;
        int min = INT_MAX;

        scanf("%d\n", &N);
        for (int i = 0; i < N; i++) {
                int a;
                scanf("%d%*c", &a);
                if (a < 0)
                        minus++;
                sum += abs(a);
                if (abs(a) < min)
                        min = abs(a);
        }

        if (minus % 2)
                sum -= min * 2;

        printf("%lu", sum);
}


Compiler output:
main.c: In function 'main':
main.c:13:19: error: 'INT_MAX' undeclared (first use in this function)
   13 |         int min = INT_MAX;
      |                   ^~~~~~~
main.c:6:1: note: 'INT_MAX' is defined in header '<limits.h>'; this is probably fixable by adding '#include <limits.h>'
    5 | #include <math.h>
  +++ |+#include <limits.h>
    6 | 
main.c:13:19: note: each undeclared identifier is reported only once for each function it appears in
   13 |         int min = INT_MAX;
      |                   ^~~~~~~
Language: C++

#include <iostream>
using namespace std;
 
int main(){
 int ans=0; 
 int N,a;
   cin>>N;
 vector<int> A(N);


  for (int i = 0; i < N; i++) {
    cin >> A.at(i);
  }
  
  for (int i = 0; i < N; i++) {
   if(A.at(i+1)<A.at(i)){
     a=A.at(i)
  A.at(i)=A.at(i+1);
  A.at(i+1)=A.at(i);
   }
  }

  A.at(1)=A.at(0)*-1;
  A.at(2)=A.at(1)*-1;
  
   for (int i = 0; i < N; i++) {
   ans=ans+A.at(i);
   }
  
cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:2: error: 'vector' was not declared in this scope
    8 |  vector<int> 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:8:9: error: expected primary-expression before 'int'
    8 |  vector<int> A(N);
      |         ^~~
a.cc:12:12: error: 'A' was not declared in this scope
   12 |     cin >> A.at(i);
      |            ^
a.cc:16:7: error: 'A' was not declared in this scope
   16 |    if(A.at(i+1)<A.at(i)){
      |       ^
a.cc:23:3: error: 'A' was not declared in this scope
   23 |   A.at(1)=A.at(0)*-1;
      |   ^
Language: C++

#include<iostream>
using namespace std;
int main(){
  
int n;
cin >> n;
int a[n];
int b[n];
  int i,j,mid;
  int sum=0;
  int minus=0;
for(i=0;i<n;i++){
  cin>>a[i];
}
  for(i=0;i<n-1;i++){
    for(j=i;j<n;j++){
      if(a[i]<a[j+1]){
        mid=a[i];
        a[i]=a[j+1];
      }
    }
  }
  for(i=1;i<n;i++){
    if(a[i]<=0){
      a[i]*(-1);
      sum+=a[i];
      minus=minus*(-1)
    }
  }
  if((n%2==0&&minus==1)||(n%2==1&&minus==-1)){
    cout<<a[i]*(-1)+sum<<endl;
  }
  else{
    cout<<a[i]+sum<<endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:27:23: error: expected ';' before '}' token
   27 |       minus=minus*(-1)
      |                       ^
      |                       ;
   28 |     }
      |     ~
Language: C++

#include<iostream>
using namespace std;

int main(){
  long long n, cneg;
  long long a[100000];
  cneg = 0;
  
  cin >> n;
  for(int i = 0; i < n; i++){
    cin >> a[i];
    if (a[i] < 0) cneg++;
  }
  sum = 0;
  int ln = 0;
  int j = 0;
  for(int i = 0; i < n; i++) {
    if (a[i] < 0) {
      if (a[i] < ln) {
        ln = a[i];
        j = i;
      }
      sum -= a[i];
    } else {
      sum += a[i];
    }
  }
  if (cneg%2 != 0) {
    sum += 2 * a[j];
  }
  printf("%d\n", sum);
  return 0;
}

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

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

int maxCommon(int x, int y){
    int tmp1 = max(x,y), tmp2= min(x,y), tmp3=0;
    while(true){
        tmp3 = tmp1%tmp2;
        if(tmp3==0) break;
        tmp1 = tmp2;
        tmp2 = tmp3;
        
    }

    return tmp2;
}

int main() {
    int N, maxC,maxC2;
    cin >> N;
    vector<int> A(N);
    for(int i=0;i<N;i++){
        cin >> A.at(i);
    }
    maxC=A[0];
    
    

    for(int i=0; i<N; i++){
        //maxCommonをN回ループすることで、現状の配列の最大公約数を求めることができる?

        maxC = maxCommon(maxC, A[i]);
        if(maxC == 1) break;
    }

    for(int i=0; i<N; i++){
        //全てが互いに疎な数列ができる
        //この数列に対して、もっかいmaxCommonをループする
        //そのさい、maxCommon = 1 になるケースを1回だけ飛ばす
        //それで出てきたmaxC2*maxCが最終的な答え
        A[i] = A[i]/maxC;

    }

    if(maxCommon(A[0],A[1])==1){
        if(N=2){
            maxC2 = 1;
            }
        else{
            maxC2 = max(maxCommon(A[0],A[2]),maxCommon(A[1],A[2])0;
        }
    }

    for(int i=0; i<N; i++){
        maxC2 = maxCommon(maxC2, A[i]);
        if(maxC2 == 1 ) break;
    }


    cout << maxC*maxC2 << endl;

}





Compiler output:
a.cc: In function 'int main()':
a.cc:49:66: error: expected ')' before numeric constant
   49 |             maxC2 = max(maxCommon(A[0],A[2]),maxCommon(A[1],A[2])0;
      |                        ~                                         ^
      |                                                                  )
Language: C++

#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <vector>
#define repi(i,a,b) for(int i=(a);i<(b);++i)
#define rep(i,a) repi(i,0,a)
#define all(a) (a).begin(), (a).end()

using ll = long long;

ll N;
ll A[100010];
std::vector<ll> ma, minus;
ll S;
bool fl = false;

int main()
{
  scanf( "%lldd", &N );

  rep( i, N )
  {
    scanf( "%lld", A+i );

    if( A[i] > 0 )
      ma.push_back( A[i] );
    else if( A[i] < 0 )
      minus.push_back( -A[i] );

    S += llabs(A[i]);
  }

  rep( i, N ) if( A[i] == 0 )
  {
    if( i-1 >= 0 && A[i-1] < 0 )
      fl = true;
    
    if( i+1 < N && A[i+1] < 0 )
      fl = true;
  }

  std::sort( all(ma) );
  std::sort( all(minus) );

  ll ans = 0;

  if( minus.size() & 1 )
  {
    if( !fl )
    {
      rep( i, minus.size()-1 )
        ans += minus[i+1];

      if( !ma.empty()&& !mi.empty())
      {
      if( ma[0] < minus[0] )
      {
        ans += minus[0];
        ans -= ma[0];
      }
      else
      {
        ans -= minus[0];
        ans += ma[0];
      }
      }

      rep( i, ma.size()-1 )
        ans += ma[i+1];
    }
    else
    {
      ans = S;
    }
  }
  else
    ans = S;

  printf( "%lld\n", ans );

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:54:26: error: 'mi' was not declared in this scope; did you mean 'ma'?
   54 |       if( !ma.empty()&& !mi.empty())
      |                          ^~
      |                          ma
Language: C++

#include<iosteam>
using namespace std;

int main(){
  long long n, cneg;
  long long a[100000];
  cneg = 0;
  
  cin >> n;
  for(int i = 0; i < n; i++){
    cin >> a[i];
    if (a[i] < 0) cneg++;
  }
  sum = 0;
  int ln = 0;
  int j = 0;
  for(int i = 0; i < n; i++) {
    if (a[i] < 0) {
      if (a[i] < ln) {
        ln = a[i];
        j = i;
      }
      sum -= a[i];
    } else {
      sum += a[i];
    }
  }
  if (cneg%2 != 0) {
    sum += 2 * a[j];
  }
  printf("%d\n", sum);
  return 0;
}

Compiler output:
a.cc:1:9: fatal error: iosteam: No such file or directory
    1 | #include<iosteam>
      |         ^~~~~~~~~
compilation terminated.
Language: C

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

int
main(void)
{
        int N;
        int minus = 0;
        uint64_t sum = 0;
        int min = INT_MAX;

        scanf("%d\n", &N);
        for (int i = 0; i < N; i++) {
                int a;
                scanf("%d%*c", &a);
                if (a < 0)
                        minus++;
                sum += abs(a);
                if (abs(a) < min)
                        min = abs(a);
        }

        if (minus % 2)
                sum -= min * 2;

        printf("%lu", sum);
}



Compiler output:
main.c: In function 'main':
main.c:11:9: error: unknown type name 'uint64_t'
   11 |         uint64_t sum = 0;
      |         ^~~~~~~~
main.c:5:1: note: 'uint64_t' is defined in header '<stdint.h>'; this is probably fixable by adding '#include <stdint.h>'
    4 | #include <math.h>
  +++ |+#include <stdint.h>
    5 | 
main.c:12:19: error: 'INT_MAX' undeclared (first use in this function)
   12 |         int min = INT_MAX;
      |                   ^~~~~~~
main.c:5:1: note: 'INT_MAX' is defined in header '<limits.h>'; this is probably fixable by adding '#include <limits.h>'
    4 | #include <math.h>
  +++ |+#include <limits.h>
    5 | 
main.c:12:19: note: each undeclared identifier is reported only once for each function it appears in
   12 |         int min = INT_MAX;
      |                   ^~~~~~~
Language: Java

import java.util.*;
import java.lang.Math;

public class Main {
  
  private int sum = INTEGER.MIN_VALUE;
  private int size;
  
  public Main() {
  }
  
  public void getSum (int[] num, int index, int temp) {
    if (index == this.size - 1) {
      sum = Math.min(temp + num[index]);
      return;
    }
    
    getSum(num, index++, temp+num[index]);
    
    num[index] = -num[index];
    num[index + 1] = -num[index + 1];
    
    getSum(num, index++, temp+num[index]);
    num[index] = -num[index];
    num[index + 1] = -num[index + 1];
    
  }
    
  public static void main(String[] args) {
    
    Scanner scan = new Scanner(System.in);
    
    int size = scan.nextInt();
    int[] num = new int[size];
	
    for(int i = 0; i < size; i++) {
      num[i] = scan.nextInt();
    }
    
    Main obj = new Main();
    obj.size = size;
    obj.getSum(num, 0, 0);
    
    System.out.println(sum);
  }
}


Compiler output:
Main.java:6: error: cannot find symbol
  private int sum = INTEGER.MIN_VALUE;
                    ^
  symbol:   variable INTEGER
  location: class Main
Main.java:14: error: no suitable method found for min(int)
      sum = Math.min(temp + num[index]);
                ^
    method Math.min(int,int) is not applicable
      (actual and formal argument lists differ in length)
    method Math.min(long,long) is not applicable
      (actual and formal argument lists differ in length)
    method Math.min(float,float) is not applicable
      (actual and formal argument lists differ in length)
    method Math.min(double,double) is not applicable
      (actual and formal argument lists differ in length)
Main.java:44: error: non-static variable sum cannot be referenced from a static context
    System.out.println(sum);
                       ^
3 errors
Language: C++

#include <iostream>
using namespace std;
 
int main(){
 int ans=0; 
 int N,a;
 vector<int> A(N);

  cin>>N;
  for (int i = 0; i < N; i++) {
    cin >> A.at(i);
  }
  
  for (int i = 0; i < N; i++) {
   if(A.at(i+1)<A.at(i)){
     a=A.at(i)
  A.at(i)=A.at(i+1);
  A.at(i+1)=A.at(i);
   }
  }

  A.at(1)=A.at(0)*-1;
  A.at(2)=A.at(1)*-1;
  
   for (int i = 0; i < N; i++) {
   ans=ans+A.at(i);
   }
  
cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:2: error: 'vector' was not declared in this scope
    7 |  vector<int> 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:7:9: error: expected primary-expression before 'int'
    7 |  vector<int> A(N);
      |         ^~~
a.cc:11:12: error: 'A' was not declared in this scope
   11 |     cin >> A.at(i);
      |            ^
a.cc:15:7: error: 'A' was not declared in this scope
   15 |    if(A.at(i+1)<A.at(i)){
      |       ^
a.cc:22:3: error: 'A' was not declared in this scope
   22 |   A.at(1)=A.at(0)*-1;
      |   ^
Language: C++

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


typedef long long ll;

int N,M,H,W,K,A,B,S,T;
int a,b;

using namespace std;


int main() {
  cin >> N;
  ll ans = 0;
  vector<ll> a(N,0),b(N,0);
  for(int i =0;i < N;i++) cin >> a.at(i);
  sort(a.begin(),a.end());
  for(int i =0;i < N;i++){
    b.at(i) = a.at(i);
    if(a.at(i) < 0)b.at(i) = (-1) * a.at(i);
    ans += b.at(i);
  }
  sort(b.begin(),b.end());
  
  for(int i =0;i < N;i++) {
    //cout << a.at(i) << endl;
    if(a.at(i) >= 0){
      if(i%2) break;
      ll k = min(b.at(i-1),b.at(i));
      ans-+= 2*k;
    }
  }
  
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:33:11: error: expected primary-expression before '+=' token
   33 |       ans-+= 2*k;
      |           ^~
Language: C++

#ifdef __GNUC__
#include <bits/stdc++.h>
#endif // __GNUC_

int main() {

    int N;
    std::cin >> N;
    int count = 0;
    int64_t min = INT64_MAX;
    int64_t sum = 0;
    for (int i = 0; i < N; ++i) {
        int64_t A;
        std::cin >> A;
        if (A <= 0)++count;
        min = std::min(min, abs(A));
        sum += abs(A);
    }

    std::cout << sum - (count % 2 ? min * 2 : 0) << std::endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:23: error: no matching function for call to 'min(int64_t&, int)'
   16 |         min = std::min(min, abs(A));
      |               ~~~~~~~~^~~~~~~~~~~~~
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:2:
/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:16:23: note:   deduced conflicting types for parameter 'const _Tp' ('long int' and 'int')
   16 |         min = std::min(min, abs(A));
      |               ~~~~~~~~^~~~~~~~~~~~~
/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:16:23: note:   mismatched types 'std::initializer_list<_Tp>' and 'long int'
   16 |         min = std::min(min, abs(A));
      |               ~~~~~~~~^~~~~~~~~~~~~
Language: C++

n = gets.chomp.to_i
a= gets.chomp.split.map(&:to_i)
cnt = 0
n.times { |i|
  if a[i] < 0
    cnt += 1
  end
}
sum = 0
if cnt % 2 == 0
  n.times { |i|
    sum += a[i].abs
  }
else
  min = a[0]
  n.times { |i|
    if min > a[i]
      min = a[i].abs
    end
  }
  n.times { |i|
    sum += a[i].abs
  }
  sum -= 2*min
end
puts sum
# while true
#   cnt = 0
#   (0..n-2).each{ |i|
#     if a[i] + a[i + 1] < 0
#       cnt += 1
#       a[i] = -a[i]
#       a[i + 1] = -a[i + 1]
#     end
#   }
#   if cnt == 0
#     puts a.sum
#     exit
#   end
# end


Compiler output:
a.cc:27:3: error: invalid preprocessing directive #while
   27 | # while true
      |   ^~~~~
a.cc:28:5: error: invalid preprocessing directive #cnt
   28 | #   cnt = 0
      |     ^~~
a.cc:29:5: error: invalid preprocessing directive #(
   29 | #   (0..n-2).each{ |i|
      |     ^
a.cc:30:11: error: token "[" is not valid in preprocessor expressions
   30 | #     if a[i] + a[i + 1] < 0
      |           ^
a.cc:36: error: unterminated #if
   36 | #   if cnt == 0
a.cc:30: error: unterminated #if
   30 | #     if a[i] + a[i + 1] < 0
a.cc:1:1: error: 'n' does not name a type
    1 | n = gets.chomp.to_i
      | ^
a.cc:9:1: error: 'sum' does not name a type
    9 | sum = 0
      | ^~~
a.cc:14:1: error: expected unqualified-id before 'else'
   14 | else
      | ^~~~
a.cc:21:3: error: 'n' does not name a type
   21 |   n.times { |i|
      |   ^
a.cc:24:3: error: 'sum' does not name a type
   24 |   sum -= 2*min
      |   ^~~
Language: C++

#include <iostream>
#include <algorithm>
#include <sstream>
#include <vector>
#include <cmath>
#define OPEN 0
#define MAXN 100010
long long A[MAXN];

using namespace std;
int main() {
	ios::sync_with_stdio(false);
#if OPEN
	freopen("input.txt", "r", stdin);
#endif
	int N;
	stringstream ss;
	//N for the array length
	//A for the array
	while (cin >> N) {
		string str;
		memset(A, 0, sizeof(A));
		getline(cin, str);	//eat the space
		getline(cin, str);
		ss << str;
		long long t;
		int j = 0;
		while (ss >> t) {
			A[j] = t;
			j++;
		}
		ss.str("");
		ss.clear();

		//each case
		//minus_v.erase(minus_v.begin(), minus_v.end());
		
		long long max_abs_c_z = 10000000000;
		int t_idx = -1;
		int count_mi = 0;
		for (int i = 0; i < N; i++) {
			if (A[i] < 0) {
				count_mi++;
				//minus_v.push_back(A[i]);
			
				
			}
			if (llabs(A[i]) < max_abs_c_z ) {
				t_idx = i;
				max_abs_c_z = llabs(A[i]);
			}
		}
		if (count_mi % 2 == 0) {
			long long sum = 0;
			for (int i = 0; i < N; i++) {
				if (A[i] < 0)sum += -A[i];
				else sum += A[i];
			}
			cout << sum << endl;
		}
		else {
			long long sum = 0;
			for (int i = 0; i < N; i++) {
				if (i == t_idx) {
					if (A[i] < 0) {
						sum += A[i];
					}
					else
						sum += -A[i];
				}
				else {
					if (A[i] < 0) {
						sum += -A[i];
					}
					else
						sum += A[i];
				}
			}
			cout << sum << endl;
		}
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:17: error: 'memset' was not declared in this scope
   22 |                 memset(A, 0, sizeof(A));
      |                 ^~~~~~
a.cc:6:1: note: 'memset' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    5 | #include <cmath>
  +++ |+#include <cstring>
    6 | #define OPEN 0
Language: C++

#include <bits/stdc++.h>
#define REP(i,a,b) for(int(i)=(a);(i)<(b);++(i))
#define RREP(i,a,b) for(int(i)=(a)-1;(i)>=(b);--(i))
#define ALL(x) (x).begin(),(x).end()
#define chmin(x,v) x = min(x, v)
#define chmax(x,v) x = max(x, v)
using namespace std;
typedef long long ll;

int N;
vector<int> A;
vector<ll> dp;  // dp[i+1]: B[i]までの和のmax

int main()
{
  cin >> N;
  A.resize(N);
  REP(i,0,N) cin >> A[i];

  dp.resize(N+3, -1);
  dp[0] = 0;
  dp[1] = A[0];
  dp[2] = max(A[0]+A[1], -A[0]-A[1]);
  REP(i,0,N) {
    dp[i+3] = dp[i+2] + A[i+2];
    chmax(dp[i+3], dp[i+1]-A[i+1]-A[i+2]);
    chmax(dp[i+3], dp[i+1]+A[i+1]+A[i+2]));
    if(A[i] <= 0 && A[i+1] >= 0 && A[i+2])
      chmax(dp[i+3], dp[i]-A[i]+A[i+1]-A[i+2]);
  }
  cout << dp[N] << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:27:42: error: expected ';' before ')' token
   27 |     chmax(dp[i+3], dp[i+1]+A[i+1]+A[i+2]));
      |                                          ^
Language: C++

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

int main () {
	long long N;
	cin >> N;
	long long T=0;
	long long total=0;
	vector <int> V(N);
	for (int i = 0; i < N; ++i){
		cin >> V[i];
	}
	for (int a : V) {
		if(a<0) {
			T++;
		}
	}
	if ((T%2)==0) {
		for (int a : V) {
			if(a<0) {
				a=-a;
			  }
	    }
	    for (int a : V) {
			if(a<0) {
				total=total+a;
			  }
	    }
	}
	else {
		for (int a : V) {
			if(a<0) {
				a=-a;
			  }
	    }
	    sort (V.begin(),V.end());
	    for (int a : V) {
			if(a<0) {
				total=total+a;
			  }
	    }
	    total=total-V[0]
	}

	cout << total;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:42:29: error: expected ';' before '}' token
   42 |             total=total-V[0]
      |                             ^
      |                             ;
   43 |         }
      |         ~
Language: C++


#include "stdafx.h"
#include <iostream>
#include <vector>
#include <numeric>
#include <limits>
using namespace std;

int main()
{
	int N = 0;
	std::vector<long> A;

	//数
	cin >> N;
	long min = LONG_MAX;
	int minusNum = 0;
	for (int i = 0; i < N; i++) {
		long tmp;
		cin >> tmp;
		A.push_back(tmp);
		if (min > abs(tmp)) {
			min = abs(tmp);
		}
		if (tmp < 0) {
			minusNum++;
		}
	}

	//変換する
	bool ischanged = false;
	if (minusNum % 2 == 0) {
		for (int i = 0; i < N; i++) {
			A[i] = A[i] < 0 ? A[i] * -1 : A[i];
		}
	} else {
		for (int i = 0; i < N; i++) {
			if (abs(A[i]) == min && !ischanged) {
				ischanged = true;
				A[i] = A[i] < 0 ? A[i] : A[i]*-1;
			} else {
				A[i] = abs(A[i]);
			}
		}
	}

	long sum = accumulate(A.begin(), A.end(), 0L);

	cout << sum << endl;
	
	return 0;
}


Compiler output:
a.cc:2:10: fatal error: stdafx.h: No such file or directory
    2 | #include "stdafx.h"
      |          ^~~~~~~~~~
compilation terminated.
Language: C

#include<stdio.h>
int main(){
	int N;
	int t;
	int a;
	int A[100000];
	bool f=true;
	bool g=false;
	long int Ans;
	scanf("%d",&N);

	for(int i=0;i<=N-1;i++){
		scanf("%d",&t);
		A[i]=t;
	}
	
	while(f){
		for(int i=0;i<=N-2;i++){
			if(A[i]+A[i+1]<0){
		 		A[i]*=-1;
		 		A[i]*=-1;
				g=true;
			}
		}
		if(!g){
			f=false;
		}	
	g=false;
	}
	
	for(int i=0;i<=N-1;i++){
		Ans+=A[i];
	}
	printf("%ld",Ans);
	return(0);
}

Compiler output:
main.c: In function 'main':
main.c:7:9: error: unknown type name 'bool'
    7 |         bool f=true;
      |         ^~~~
main.c:2:1: note: 'bool' is defined in header '<stdbool.h>'; this is probably fixable by adding '#include <stdbool.h>'
    1 | #include<stdio.h>
  +++ |+#include <stdbool.h>
    2 | int main(){
main.c:7:16: error: 'true' undeclared (first use in this function)
    7 |         bool f=true;
      |                ^~~~
main.c:7:16: note: 'true' is defined in header '<stdbool.h>'; this is probably fixable by adding '#include <stdbool.h>'
main.c:7:16: note: each undeclared identifier is reported only once for each function it appears in
main.c:8:9: error: unknown type name 'bool'
    8 |         bool g=false;
      |         ^~~~
main.c:8:9: note: 'bool' is defined in header '<stdbool.h>'; this is probably fixable by adding '#include <stdbool.h>'
main.c:8:16: error: 'false' undeclared (first use in this function)
    8 |         bool g=false;
      |                ^~~~~
main.c:8:16: note: 'false' is defined in header '<stdbool.h>'; this is probably fixable by adding '#include <stdbool.h>'
Language: C++

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

int main(){
  int n,minas,min;
  int *a;
  long sum;
  min=1000000000;
  minas=0;
  cin>>n;
  a=(int*)malloc(sizeof(int)*(n+1));
  for(int i=0;i<n;i++){
    cin>>a[i];
    if(a[i]<0){
      minas++;
      a[i]=a[i]*(-1);
    }
    if(min>a[i]){
      min=a[i];
    }
  }
  /*int *b;
  int *c;
  b=(int*)malloc(sizeof(int)*(n+1));
  c=(int*)malloc(sizeof(int)*(minas+1));
  */
  /*for(int i1=0;i1<n;i1++){
    for(int i2=i1;i2<n;i2++){
      if(a[i1]>a[i2]){
	tmp=a[i1];
	a[i1]=a[i2];
	a[i2]=tmp;
      }
    }
  }*/
  sum=0;
  for(int j=0;j<n;j++){
    sum+=(long)a[j];
  }
  if(minas%2==1){
    sum-=(long)min;
    sum-=(long)min;
  }
  //int p_sum=0;
  /*
  int m_sum=0;
  for(int j=minas;j<n;j++){
    p_sum+=a[j];
  }
  for(int k=0;k<minas;k++){
    m_sum-=a[k];
  }
  sum=p_sum+m_sum;*/
  cout<<sum<<endl;
  return 0;
}


Compiler output:
a.cc:2:9: fatal error: malloc: No such file or directory
    2 | #include<malloc>
      |         ^~~~~~~~
compilation terminated.
Language: C++

int main() {
	int n;
	int a[120000];
	cin >> n;
	for (int i = 0; i < n; i++) cin >> a[i];
	int cnt = 0;
	int maxa = -1000000000, mina = 1000000000;
	int maxaindex, minaindex;
	for (int i = 0; i < n; i++) {
		if (a[i] < 0) { 
			cnt++; 
			if (a[i] > maxa) {
                maxa = a[i]; 
                maxaindex = i;
            }
		}
		if (a[i] >= 0) {
			if (a[i] < mina) {
                mina = a[i]; 
                minaindex = i;
            }
		}
	}
	ll sum = 0;
	if (cnt % 2) {
		for (int i = 0; i < n; i++) {
			if (a[i] < 0 && maxaindex != i) {
                sum -= a[i];
            } else if (a[i] >= 0 && minaindex != i) {
                sum += a[i];
            }
		}

		sum += abs(a[maxaindex] + a[minaindex]);
	} else {
		for (int i = 0; i < n; i++) {
			if (a[i] < 0) sum -= a[i];
			else sum += a[i];
		}
	}

	cout << sum << endl;


	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:9: error: 'cin' was not declared in this scope
    4 |         cin >> n;
      |         ^~~
a.cc:24:9: error: 'll' was not declared in this scope
   24 |         ll sum = 0;
      |         ^~
a.cc:28:17: error: 'sum' was not declared in this scope
   28 |                 sum -= a[i];
      |                 ^~~
a.cc:30:17: error: 'sum' was not declared in this scope
   30 |                 sum += a[i];
      |                 ^~~
a.cc:34:17: error: 'sum' was not declared in this scope
   34 |                 sum += abs(a[maxaindex] + a[minaindex]);
      |                 ^~~
a.cc:34:24: error: 'abs' was not declared in this scope
   34 |                 sum += abs(a[maxaindex] + a[minaindex]);
      |                        ^~~
a.cc:37:39: error: 'sum' was not declared in this scope
   37 |                         if (a[i] < 0) sum -= a[i];
      |                                       ^~~
a.cc:38:30: error: 'sum' was not declared in this scope
   38 |                         else sum += a[i];
      |                              ^~~
a.cc:42:9: error: 'cout' was not declared in this scope
   42 |         cout << sum << endl;
      |         ^~~~
a.cc:42:17: error: 'sum' was not declared in this scope
   42 |         cout << sum << endl;
      |                 ^~~
a.cc:42:24: error: 'endl' was not declared in this scope
   42 |         cout << sum << endl;
      |                        ^~~~
Language: C++

#include <iostream>
#include <cmath>
using namespace std;
int main() {
    int N;
    cin>>N;
    int A[100010];
    int mi=0;
    int small=1000000000;
    unsigned long sum=0;
    for(int i=0;i<N;++i){
        cin>>A[i];
        sum+=abs(A[i]);
        if(A[i]<0){
            mi++;
        }
        if(samll>abs(A[i])){
            small=A[i];
        }
    }
    if(mi%2==0)cout<<sum<<endl;
    else cout<<sum-small-small<<endl;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:17:12: error: 'samll' was not declared in this scope; did you mean 'small'?
   17 |         if(samll>abs(A[i])){
      |            ^~~~~
      |            small
Language: C++

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

int main(){
  int n,minas,min;
  int *a;
  long sum;
  min=1000000000;
  minas=0;
  a=(int*)malloc(sizeof(int)*(n+1));
  cin>>n;
  for(int i=0;i<n;i++){
    cin>>a[i];
    if(a[i]<0){
      minas++;
      a[i]=a[i]*(-1);
    }
    if(min>a[i]){
      min=a[i];
    }
  }
  /*int *b;
  int *c;
  b=(int*)malloc(sizeof(int)*(n+1));
  c=(int*)malloc(sizeof(int)*(minas+1));
  */
  /*for(int i1=0;i1<n;i1++){
    for(int i2=i1;i2<n;i2++){
      if(a[i1]>a[i2]){
	tmp=a[i1];
	a[i1]=a[i2];
	a[i2]=tmp;
      }
    }
  }*/
  sum=0;
  for(int j=0;j<n;j++){
    sum+=(long)a[j];
  }
  if(minas%2==1){
    sum-=(long)min;
    sum-=(long)min;
  }
  //int p_sum=0;
  /*
  int m_sum=0;
  for(int j=minas;j<n;j++){
    p_sum+=a[j];
  }
  for(int k=0;k<minas;k++){
    m_sum-=a[k];
  }
  sum=p_sum+m_sum;*/
  free(a);
  cout<<sum<<endl;
  return 0;
}


Compiler output:
a.cc:2:9: fatal error: malloc: No such file or directory
    2 | #include<malloc>
      |         ^~~~~~~~
compilation terminated.
Language: C++

#include <iostream>
#include <cmath>
using namespace std;
int main() {
    int N;
    cin>>N;
    int A[100010];
    int mi=0;
    int samll=1000000000;
    unsigned long sum=0;
    for(int i=0;i<N;++i){
        cin>>A[i];
        sum+=abs(A[i]);
        if(A[i]<0){
            mi++;
        }
        if(samll>abs(A[i])){
            small=A[i];
        }
    }
    if(mi%2==0)cout<<sum<<endl;
    else cout<<sum-small-small<<endl;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:18:13: error: 'small' was not declared in this scope; did you mean 'samll'?
   18 |             small=A[i];
      |             ^~~~~
      |             samll
a.cc:22:20: error: 'small' was not declared in this scope; did you mean 'samll'?
   22 |     else cout<<sum-small-small<<endl;
      |                    ^~~~~
      |                    samll
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int n;
  cin >> n;
  vector<int> a(n);
  for (int i=0; i<n; i++){
    cin >> a[i];
  }
  vector<int> b(n);
  for (int i=0; i<n; i++){
    if (a[i]<0) b[i] = (-1)*a[i];
    else b[i]=a[i];
  }
  int mc=0;
  int ac=0;
  for (int i=0; i<n; i++) if(a[i]<0) mc++;
  if (mc%2==0){
    for (int i; i<n; i++){
      ac += a[i];
    }
  }
  if (mc%2==1){
    int min;
    min=b[0];
    for (int i=1; i<n; i++){
      min=min(min,b[i]);
    }
    for (int i; i<n; i++){
      ac += a[i];
    }
    ac=ac-2*min;
  }
  cout << ac << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:27:14: error: 'min' cannot be used as a function
   27 |       min=min(min,b[i]);
      |           ~~~^~~~~~~~~~
Language: C++

#include<iostream>
#include<vector>
#include<algorithm>
#include<stdlib.h>

using namespace std;

int main(){
  int n;
  int i,j,c=0,m=0,ans=0;
  vector <int> v,w;
  
  cin>>n;
  
 for(i=0;i<n;i++){
   cin>>j;
   v.push_back(j);
   w.push_back(abs(j));
   if(j<0)
     m++;
 }
 sort(w.begin(),w.end())
  for(i=0;i<n;i++){
    ans=ans+w[i];
  }
  cout<<(m%2==0?ans:ans-2*w[0])<<endl;
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:25: error: expected ';' before 'for'
   22 |  sort(w.begin(),w.end())
      |                         ^
      |                         ;
   23 |   for(i=0;i<n;i++){
      |   ~~~                    
a.cc:23:18: error: expected ';' before ')' token
   23 |   for(i=0;i<n;i++){
      |                  ^
      |                  ;
Language: Java

import java.util.*;

class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int[] a = new int[n];
    for(int i=0; i<n; i++){
      a[i] = sc.nextInt();
    }
    
    int ans = 0;
    int ttl = 0;
    for(int i=0; i<n-1; i++){
      ttl = 0;
      a[i] = -1*a[i];
      a[i+1] = -1*a[i+1];
      for(int j=0; j<n; j++){
        ttl += a[j];
      }
      if(ans<ttl){
        ans = ttl;
      }
      a[i]=a[i]*(-1);
      a[i+1]=a[i+1]*(-1)
    }
    System.out.println(ans);
  }
}

Compiler output:
Main.java:25: error: ';' expected
      a[i+1]=a[i+1]*(-1)
                        ^
1 error
Language: C++

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

int main() {
  int N; 
  vector<int>A(N);
  for(int i=0; i<N; i++){
    cin >> A.at(i);
  }
  sort(vec.begin(),vec.end())
    for(int i=0; i<N; i++){
      if(A.at(i)<0){
        A.at(i) *=(-1);
        A.at(i) *=(-1);
 
  }
  }
  
  cout << an <<endl;
}
    
    


Compiler output:
a.cc: In function 'int main()':
a.cc:10:8: error: 'vec' was not declared in this scope
   10 |   sort(vec.begin(),vec.end())
      |        ^~~
a.cc:11:18: error: 'i' was not declared in this scope
   11 |     for(int i=0; i<N; i++){
      |                  ^
a.cc:19:11: error: 'an' was not declared in this scope; did you mean 'yn'?
   19 |   cout << an <<endl;
      |           ^~
      |           yn
Language: C++

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

int main()
{
	int N;
	cin >> N;
	vector<int> A(N);

	long long int ans;

	int minNum = INT_MAX, minIdx = 0;
	for (int i = 0; i < N; ++i)
	{
		cin >> A[i];
		if (A[i] < minNum)
		{
			minNum = A[i];
			minIdx = i;
		}
	}

	for (int i = 0; i < minIdx; ++i)
	{
		if (A[i] < 0)
		{
			A[i] = -A[i];
			A[i + 1] = -A[i + 1];
		}
	}
	for (int i = N - 1; i > minIdx; --i)
	{
		if (A[i] < 0)
		{
			A[i] = -A[i];
			A[i - 1] = -A[i - 1];
		}
	}

	long long int ans = 0;
	for (int i = 0; i < N; ++i)
	{
		ans += A[i];
	}

	cout << ans << endl;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:45:23: error: redeclaration of 'long long int ans'
   45 |         long long int ans = 0;
      |                       ^~~
a.cc:15:23: note: 'long long int ans' previously declared here
   15 |         long long int ans;
      |                       ^~~