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

#include<stdio.h>
#include<stblib.h>

int main(){
	int N;
	int *A;
	int a,i,c;
	int min=100000000,max=-100000000;
	scanf("%d",&N);
	A=(int*)malloc(sizeof(int)*N);
	for(i=0;i<N;i++){
		scanf("%d",&A[i]);
	}
	for(i=0;i<N;i++){
		if(A[i]<0){
			c++;
			if(max<A[i])max=A[i];
			a-=A[i];
		}
		else{
			if(min>A[i])min=A[i];
			a+=A[i];
		}
	}
	if(c%2==0)printf("%d\n",a);
	else{
		if(min+max<0)printf("%d\n",a-2*min);
		else printf("%d\n",a+2*max);
	}
	return 0;
}

Compiler output:
main.c:2:9: fatal error: stblib.h: No such file or directory
    2 | #include<stblib.h>
      |         ^~~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
#inclued<cmath>

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

    long int num[10000]={0};
    for(int i=0;i<n;i++){
        std::cin>>num[i];
    }

    for(int i=0;i<n-1;i++){
        if(num[i]<=0){
            if(num[i+1]<=0){
                num[i]*=-1;
                num[i+1]*=-1;
            }else{
                if(abs(num[i])>=num[i+1]){
                    num[i]*=-1;
                    num[i+1]*=-1;
                }
            }
        }
        
    }

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

    std::cout << ans<< std::endl;
    return 0;
}

Compiler output:
a.cc:2:2: error: invalid preprocessing directive #inclued; did you mean #include?
    2 | #inclued<cmath>
      |  ^~~~~~~
      |  include
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
         
int main() {
	ll n, tmp, mi = 1ll << 52, s = 0ll, neg = 0;
	bool has_zero = false;
  	cin >> n;
    for(int i = 0; i < n; i++) {
      	cin >> tmp;
		has_zero ||= tmp == 0;
      	if(tmp < 0) neg++;
      	s += abs(tmp);
      	mi = min(mi, abs(tmp));
    }
  	if(neg % 2 == 1 && !has_zero) s -= mi;
  	cout << s << endl;
  	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:28: error: expected primary-expression before '=' token
   11 |                 has_zero ||= tmp == 0;
      |                            ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  longlong n,m=0;
  cin >> n;
  vector<int> A(n);
  for(int i=0;i<n;i++){
    cin >> A[i];
  }
  for(int i=0;i<n;i++){
    if(A[i] < 0) A[i]=A[i]*-1;
    m=m+A[i];
  }
  cout << m << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'longlong' was not declared in this scope
    5 |   longlong n,m=0;
      |   ^~~~~~~~
a.cc:6:10: error: 'n' was not declared in this scope; did you mean 'yn'?
    6 |   cin >> n;
      |          ^
      |          yn
a.cc:13:5: error: 'm' was not declared in this scope
   13 |     m=m+A[i];
      |     ^
a.cc:15:11: error: 'm' was not declared in this scope
   15 |   cout << m << endl;
      |           ^
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));
 }
  
  for(i=0;i<n-1;i++){
    if(v[i]<0&&v[i+1]<0){
      v[i]=abs(v[i]);
      v[i+1]=abs(v[i+1])
    }
  }
  for(i=0;i<n;i++){
    if(v[i]<0)
      c++;  
  }
  for(i=0;i<c;i++){
    m=m+w[i];
  }
  for(i=0;i<n;i++){
    ans=ans+w[i];
  }
  cout<<ans-2*m<<endl;
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:25: error: expected ';' before '}' token
   24 |       v[i+1]=abs(v[i+1])
      |                         ^
      |                         ;
   25 |     }
      |     ~
Language: Java

import java.util.*;

public class Main {
  
  public int[] value;
  public int[] cost;
  
  public Main() {
  }
    
  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();
    }
    
    int sum = 0;
    
    for (int i = 0; i < size - 1; i++) {
      if (num[i] < 0)
        num[i+1] = -num[i+1];
      
      num+= num[i];
    }
    
    sum += num[size - 1];
    System.out.println(sum);
    
  }
}


Compiler output:
Main.java:28: error: bad operand types for binary operator '+'
      num+= num[i];
         ^
  first type:  int[]
  second type: int
1 error
Language: Java

import java.util.*;

public class Main {
  
  public int[] value;
  public int[] cost;
  
  public Main() {
  }
    
  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();
    }
    
    int sum = 0;
    
    for (int i = 0; i < size - 1; i++) {
      if (num[i] < 0)
        num[i+1] = -num[i+1];
      
      num+= num[i];
    }
    
    sum += num[size - 1];
    System.out.println(sum)
    
  }
}


Compiler output:
Main.java:32: error: ';' expected
    System.out.println(sum)
                           ^
1 error
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));
 }
  
  for(i=0;i<n-1;i++){
    if(v[i]<0&&v[i+1]<0){
      v[i]=abs(v[i]);
      v[i+1]=abs(v[i+1])
    }
  }
  for(i=0;i<n;i++){
    if(v[i]<0)
      c++;  
  }
  for(i=0;i<c;i++){
    m+=w[i];
  }
  for(i=0;i<n;i++){
    and+=w[i];
  }
  cout<<ans-2*m<<endl;
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:25: error: expected ';' before '}' token
   24 |       v[i+1]=abs(v[i+1])
      |                         ^
      |                         ;
   25 |     }
      |     ~                    
a.cc:35:8: error: expected identifier before '+=' token
   35 |     and+=w[i];
      |        ^~
Language: C++

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

#define rep(i,n) for(int (i)=0;(i)<(n);(i)++)

int main(void) {
	int n;
	cin >> n;
	long long x, p=0, m=0, min = LLONG_MAX, sum = 0;
	bool haszero = false;
	rep(i, n) {
		cin >> x;
		sum += abs(x);
		if (x == 0)haszero = true;

		if (!haszero) {
			if (min > x)min = x;
			if (x > 0)p++;
			else m++;
		}

	}
	if (haszero || m%2==0)cout << sum;
	else cout << sum - 2 * min;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:38: error: 'LLONG_MAX' was not declared in this scope
   11 |         long long x, p=0, m=0, min = LLONG_MAX, sum = 0;
      |                                      ^~~~~~~~~
a.cc:4:1: note: 'LLONG_MAX' is defined in header '<climits>'; this is probably fixable by adding '#include <climits>'
    3 | #include <numeric>
  +++ |+#include <climits>
    4 | using namespace std;
a.cc:15:17: error: 'sum' was not declared in this scope
   15 |                 sum += abs(x);
      |                 ^~~
a.cc:25:39: error: 'sum' was not declared in this scope
   25 |         if (haszero || m%2==0)cout << sum;
      |                                       ^~~
a.cc:26:22: error: 'sum' was not declared in this scope
   26 |         else cout << sum - 2 * min;
      |                      ^~~
Language: C++

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

using namespace std;

int main() {
	int n; long long int sum = 0;
	cin >> n;
	vector<long long int>num(n);

	for (int i = 0; i < n; i++) {
		long long int a;
		cin >> a;
		num[i] = a;
	}
	
	for (int i = 0; i < n-1; i++) {
		if (num[i] < 0) {
			num[i] = num[i] * -1;
			num[i + 1] = num[i + 1] * -1;
		}
	}
	for (int i = 0; i < n; i++) {
		num[i] = abs(num[i]);
	}

	sort(num.begin(), num.end());

	if (num[n - 1] < 0) {
		for (int i = 1; i < n; i++) {
			sum = sum + num[i];
		}
		cout << sum - num[0];

	}
	else {
		for (int i = 0; i < n; i++) {
			sum = sum + num[i];
		}
		cout << sum;
	}

Compiler output:
a.cc: In function 'int main()':
a.cc:42:10: error: expected '}' at end of input
   42 |         }
      |          ^
a.cc:7:12: note: to match this '{'
    7 | int main() {
      |            ^
Language: C++

#include <bits/stdc++.h>

using namespace std;


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

  int count = 0;
  vector<int64_t> a(N);
  for(int i=0;i<N;i++){
    cin >> a[i];
    if(a[i] =< 0){
      count++;
    }
  }

  int64_t result = 0;
  for(int i=0;i<N;i++){
    if(a[i] < 0){
      result += -1*a[i];
    }
    else {
      result += a[i];
    }
  }
  
  if(count%2 == 0){
    cout << result - 2*r << endl;
  }
  else{
    result -= (*min_element(a.begin(),a.end()))*(-2);
  }
  return 0;
}






Compiler output:
a.cc: In function 'int main()':
a.cc:14:14: error: expected primary-expression before '<' token
   14 |     if(a[i] =< 0){
      |              ^
a.cc:30:24: error: 'r' was not declared in this scope
   30 |     cout << result - 2*r << endl;
      |                        ^
Language: C++

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

using namespace std;

int main() {
	int n; long long int sum = 0;
	cin >> n;
	vector<long long int>num(n);
	for (int i = 0; i < n-1; i++) {
		if (num[i] < 0) {
			num[i] = num[i] * -1;
			num[i + 1] = num[i + 1] * -1;
		}
	}
	for (int i = 0; i < n; i++) {
		long long int a;
		cin >> a;
		num[i] = abs(a);
	}
	sort(num.begin(), num.end());

	if (num[n - 1] < 0) {
		for (int i = 1; i < n; i++) {
			sum = sum + num[i];
		}
		cout << sum - sum[0];

	}
	else {
		for (int i = 0; i < n; i++) {
			sum = sum + num[i];
		}
		cout << sum;
	}
	

Compiler output:
a.cc: In function 'int main()':
a.cc:28:34: error: invalid types 'long long int[int]' for array subscript
   28 |                 cout << sum - sum[0];
      |                                  ^
a.cc:36:10: error: expected '}' at end of input
   36 |         }
      |          ^
a.cc:7:12: note: to match this '{'
    7 | int main() {
      |            ^
Language: C++

#include <iostream>

using namespace std;
int main(void){
    long long N,T,S,ans,F,Z,m,M;
    cin>>N;
    M=1000000000;
    m=-1000000000;
    T=0;
    S=0;
    long long A[N];
    F=0;
    Z=0;
    int j;
    
    for(int i=0;i<N;i++){
        cin>>A[i];
        if(A[i]<0){
            F=F+1;
            T=T+A[i];
            if(m<A[i]){
                m=A[i];
                
            }
        }else if(A[i]==0){
            Z=Z+1;
        }else{
            S=S+A[i];
            if(M>A[i]){
                M=A[i];
            }
        }
    
      
    }
    if(F%2==0){
        ans=S-T;
    }else if(Z>0){
        ans=S-T;
    }else{
        m=m*(-1);
        ans=S-T-min(M,m)*2;
    }
    
    cout<<ans<<endl;
    return 0;
    
}
#include <iostream>

using namespace std;
int main(void){
    long long N,T,S,ans,F,Z,m,M;
    cin>>N;
    M=1000000000;
    m=-1000000000;
    T=0;
    S=0;
    long long A[N];
    F=0;
    Z=0;
    int j;
    
    for(int i=0;i<N;i++){
        cin>>A[i];
        if(A[i]<0){
            F=F+1;
            T=T+A[i];
            if(m<A[i]){
                m=A[i];
                
            }
        }else if(A[i]==0){
            Z=Z+1;
        }else{
            S=S+A[i];
            if(M>A[i]){
                M=A[i];
            }
        }
    
      
    }
    if(F%2==0){
        ans=S-T;
    }else if(Z>0){
        ans=S-T;
    }else{
        m=m*(-1);
        ans=S-T-min(M,m)*2;
    }
    
    cout<<ans<<endl;
    return 0;
    
}


Compiler output:
a.cc:52:5: error: redefinition of 'int main()'
   52 | int main(void){
      |     ^~~~
a.cc:4:5: note: 'int main()' previously defined here
    4 | int main(void){
      |     ^~~~
Language: C++

#include<iostream>
using namespace std;

int main(){
  int n,minas,tmp,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*)2*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: In function 'int main()':
a.cc:38:10: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
   38 |     sum+=(long*)a[j];
      |          ^~~~~~~~~~~
a.cc:38:8: error: invalid conversion from 'long int*' to 'long int' [-fpermissive]
   38 |     sum+=(long*)a[j];
      |     ~~~^~~~~~~~~~~~~
      |        |
      |        long int*
a.cc:41:18: error: invalid operands of types 'long int*' and 'int' to binary 'operator*'
   41 |     sum-=(long*)2*min;
      |          ~~~~~~~~^~~~
      |          |        |
      |          |        int
      |          long int*
Language: C++

#include<iostream>
using namespace std;

int main()
{
  int n;
  cin>>n;
  int b[n];
  int s=0;
  for(int i=0;i<n;i++){
    cin>>b[n];}
  for(int j=0;j<n;j++){
    if(b[j]<b[j+1]){
      if(-b[j]>b[j+1]{
        int e;
        e=-b[j];
        b[j]=e;
        e=-b[j+1];
       b[j+1]=e;
      }
         }
         }
  for(int k=0;k<n;k++){
    s+=b[k];
  }
         cout<<s;
         }

Compiler output:
a.cc: In function 'int main()':
a.cc:14:22: error: expected ')' before '{' token
   14 |       if(-b[j]>b[j+1]{
      |         ~            ^
      |                      )
a.cc:21:10: error: expected primary-expression before '}' token
   21 |          }
      |          ^
Language: C++

#include<iostream>
using namespace std;

int main()
{
  int n;
  cin>>n;
  int b[n];
  int s=0;
  for(int i=0;i<n;i++){
    cin>>b[n];}
  for(int j=0;j<n;j++){
    if(b[j]<b[j+1]){
      if(-b[j]>b[j+1]{
        b[j]=-b[j];
        b[j+1]=-b[j+1];
      }
         }
         }
  for(int k=0;k<n;k++){
    s+=b[k];
  }
         cout<<s;
         }

Compiler output:
a.cc: In function 'int main()':
a.cc:14:22: error: expected ')' before '{' token
   14 |       if(-b[j]>b[j+1]{
      |         ~            ^
      |                      )
a.cc:18:10: error: expected primary-expression before '}' token
   18 |          }
      |          ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
         
int main() {
	ll n, mi = 1ll << 52, s = 0ll, neg = 0;
  	cin >> n;
    for(int i = 0; i < n; i++) {
    	ll tmp;
      	cin >> tmp;
      	if(tmp < 0) neg++;
      	s += abs(tmp);
      	mi = min(mi, tmp);
    }
  	if(neg % 2 == 1) s += mi;
  	cout << s << endl;
  	return 0;
}
  	
  
          	cin >> n;
          	vector<ll> v(n), c(n);
          	for(int i = 0; i < n; i++) cin >> v[i];
          	for(int i = 0; i < n; i++) cin >> c[i];
          	for(int i = 1; i < n + 1; i++) total += max(0ll, v[i] - c[i]);
          	cout << total << endl;
        	return 0;
        }

Compiler output:
a.cc:21:17: error: 'cin' does not name a type
   21 |                 cin >> n;
      |                 ^~~
a.cc:22:30: error: 'n' was not declared in this scope; did you mean 'yn'?
   22 |                 vector<ll> v(n), c(n);
      |                              ^
      |                              yn
a.cc:22:36: error: 'n' was not declared in this scope; did you mean 'yn'?
   22 |                 vector<ll> v(n), c(n);
      |                                    ^
      |                                    yn
a.cc:23:17: error: expected unqualified-id before 'for'
   23 |                 for(int i = 0; i < n; i++) cin >> v[i];
      |                 ^~~
a.cc:23:32: error: 'i' does not name a type
   23 |                 for(int i = 0; i < n; i++) cin >> v[i];
      |                                ^
a.cc:23:39: error: 'i' does not name a type
   23 |                 for(int i = 0; i < n; i++) cin >> v[i];
      |                                       ^
a.cc:24:17: error: expected unqualified-id before 'for'
   24 |                 for(int i = 0; i < n; i++) cin >> c[i];
      |                 ^~~
a.cc:24:32: error: 'i' does not name a type
   24 |                 for(int i = 0; i < n; i++) cin >> c[i];
      |                                ^
a.cc:24:39: error: 'i' does not name a type
   24 |                 for(int i = 0; i < n; i++) cin >> c[i];
      |                                       ^
a.cc:25:17: error: expected unqualified-id before 'for'
   25 |                 for(int i = 1; i < n + 1; i++) total += max(0ll, v[i] - c[i]);
      |                 ^~~
a.cc:25:32: error: 'i' does not name a type
   25 |                 for(int i = 1; i < n + 1; i++) total += max(0ll, v[i] - c[i]);
      |                                ^
a.cc:25:43: error: 'i' does not name a type
   25 |                 for(int i = 1; i < n + 1; i++) total += max(0ll, v[i] - c[i]);
      |                                           ^
a.cc:26:17: error: 'cout' does not name a type
   26 |                 cout << total << endl;
      |                 ^~~~
a.cc:27:17: error: expected unqualified-id before 'return'
   27 |                 return 0;
      |                 ^~~~~~
a.cc:28:9: error: expected declaration before '}' token
   28 |         }
      |         ^
Language: C++

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

int main(){
    int n,x,s=0;
    cin >> n;
    vector<int> a(n),b(n);
    for(int i=0;i<n;i++){
        cin >> a.at(i);
    }
    for(int i=0;i<n-1;i++){
        x=a.at(i)+a.at(i+1)-(-1)*(a.at(i)+a.at(i+1));
        if(x>=0){
            b.at(i)=a.at(i);
            b.at(i+1)=a.at(i+1)
        }
        else{
            b.at(i)=(-1)*a.at(i);
            b.at(i+1)=(-1)*a.at(i+1);
        }
        s+=b.at(i);
    }
    cout << s+b.at(n) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:32: error: expected ';' before '}' token
   17 |             b.at(i+1)=a.at(i+1)
      |                                ^
      |                                ;
   18 |         }
      |         ~
Language: C++

#include<iostream>
using namespace std;

int main()
{
  int n;
  cin>>n;
  int b[n];
  int s=0;
  for(int i=0;i<n;i++){
    cin>>b[n];}
  for(int j=0;j<n;j++){
    if(b[j]<b[j+1]){
      if(-b[j]>b[j+1]{
        b[j]=-b[j];
        b[j+1]=-b[j+1];
      }
         }
         }
  for(int k=0;k<n;k++){
    cout<<b[k];
  }
         }

Compiler output:
a.cc: In function 'int main()':
a.cc:14:22: error: expected ')' before '{' token
   14 |       if(-b[j]>b[j+1]{
      |         ~            ^
      |                      )
a.cc:18:10: error: expected primary-expression before '}' token
   18 |          }
      |          ^
Language: C

#include<stdio.h>

int main(void){
  int N;
  scanf("%d",&N);
  int A[N];
  int mi=0;
  int min;
  int64 ans=0;
  for(int i=0;i<N;i++){
    scanf("%d",&A[i]);
    if(A[i]<0) mi++;
    A[i]=fabs(A[i]);
    ans+=A[i];
  }
  qsort(A,N,sizeof(int),compare_int);
  ans-=A[0]*2;
  printf("%lld",ans);

  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:9:3: error: unknown type name 'int64'; did you mean 'int'?
    9 |   int64 ans=0;
      |   ^~~~~
      |   int
main.c:13:10: error: implicit declaration of function 'fabs' [-Wimplicit-function-declaration]
   13 |     A[i]=fabs(A[i]);
      |          ^~~~
main.c:2:1: note: include '<math.h>' or provide a declaration of 'fabs'
    1 | #include<stdio.h>
  +++ |+#include <math.h>
    2 | 
main.c:13:10: warning: incompatible implicit declaration of built-in function 'fabs' [-Wbuiltin-declaration-mismatch]
   13 |     A[i]=fabs(A[i]);
      |          ^~~~
main.c:13:10: note: include '<math.h>' or provide a declaration of 'fabs'
main.c:16:3: error: implicit declaration of function 'qsort' [-Wimplicit-function-declaration]
   16 |   qsort(A,N,sizeof(int),compare_int);
      |   ^~~~~
main.c:16:25: error: 'compare_int' undeclared (first use in this function)
   16 |   qsort(A,N,sizeof(int),compare_int);
      |                         ^~~~~~~~~~~
main.c:16:25: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include<iostream>
using namespace std;

int main(){
  int n,minas,tmp,sum;
  int *a;
  minas=0;
  a=(int*)malloc(sizeof(int)*(n+1));
  for(i=0;i<n;i++){
    cin>>a[i];
    if(a[i]<0){
      minas++;
      a[i]=a[i]*(-1);
    }
  }
  /*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;
  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[j];
  }
  sum=p_sum+m_sum;
  cout<<sum<<endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:7: error: 'i' was not declared in this scope
    9 |   for(i=0;i<n;i++){
      |       ^
a.cc:37:14: error: 'j' was not declared in this scope
   37 |     m_sum-=a[j];
      |              ^
Language: C++

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

int main() {
  int N;
  cin>>N;
  long A[N];
  long sum=0;
  long min=10*10*10*10*10*10*10*10*10;
  int mainasu=0;
  for(int i=0;i<N;i++){
    cin>>A[i];
    if(abs(A[i])<min)min=abs(A[i]);
    
    //中の負の数
    if(i!=0&&i!=N-1){
      if(A[i]<0) mainasu++;
    }
    
    sum+=abs(A[i]);
  }
  long ans=0;
  if(A[0]<0 && A[N-1]<0){
    if(mainasu==0)ans =sum;
    else if(mainasu%2==0) ans=sum -2*min;
    else ans = sum;
  }else if(A[0]>=0 && A[N-1]>=0){
    if(mainasu%2==1) ans=sum -2*min;
    else ans = sum;
  }else{
    else if(mainasu%2==0) ans=sum -2*min;
    else ans = sum;
  }

  cout<<ans<<endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:33:5: error: 'else' without a previous 'if'
   33 |     else if(mainasu%2==0) ans=sum -2*min;
      |     ^~~~
Language: C++


#include <stdio.h>
#include <iostream>
#include <string>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <stack>
#include <functional>
#include <algorithm>
#include <cmath>
#include <iomanip>

using namespace std;

#define in(x) cin >> x
#define out(x) cout << x << endl

#define PI acos(-1)
#define pp push_back

#define Yes cout << "Yes" << endl
#define YES cout << "YES" << endl
#define No cout << "No" << endl
#define NO cout << "NO" << endl

#define vec2(type) vector<vector<type>>
#define vec3(type) vector<vector<vector<type>>>

#define For(i, n) for(int i = 0; i < n; i++)

#define Tcmp(X, Y) (abs(aryvec[i]->x) == X && abs(aryvec[i]->y) == Y)

template<typename T> void input(T *data, int n){
	For(i, n){
		cin >> data[i];
	}
}

template<typename T> void sort(vector<T> &ary){
	sort(ary.begin(), ary.end());
}

template<typename T> void rsort(vector<T> &ary){
	sort(ary.rbegin(), ary.rend());
}

void rstring(string &str){
	string temp = str;

	For(i, (int)str.size()){
		str[i] = temp[(str.size() - 1) - i];
	}
}

struct Vec{
	int x, y;
	Vec():
	x(0), y(0){}
};

int main(){

	long long n;
	long *a;

	in(n);
	a = new long long [n];
	input(a, n);

	long long max = 0;

	For(i, n - 1){
		if((a[i] < 0 && a[i + 1] + a[i] < 0) || (i < n - 2 && a[i] < 0 && a[i + 1] > 0 && a[i + 2] < 0)){
			a[i] *= -1;
			a[i + 1] *= -1;
			max += a[i];
		}
		else{
			max += a[i];
		}
	}

	max += a[n - 1];

	out(max);
	
	return 0;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:69:13: error: invalid conversion from 'long long int*' to 'long int*' [-fpermissive]
   69 |         a = new long long [n];
      |             ^~~~~~~~~~~~~~~~~
      |             |
      |             long long int*
Language: C++

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

using namespace std;

int main(){
  int n;
  int i,j,ans=0;
  vector <int> v,w;
  
  cin>>n;
  
 for(i=0;i<n;i++){
   cin>>j;
   v.push_back(j);
 }
  for(i=0;i<n-1;i++){
    j=v[i]+v[i+1];
    w.push_back(j);
  }
  sort(w.begin(),w.end(),greater(int)());
  
  for(i=0;i<n;i++){
    ans+=v[i];
  }
  cout<<ans-2*w[0]<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:33: error: missing template arguments before '(' token
   22 |   sort(w.begin(),w.end(),greater(int)());
      |                                 ^
a.cc:22:34: error: expected primary-expression before 'int'
   22 |   sort(w.begin(),w.end(),greater(int)());
      |                                  ^~~
Language: C++

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

using namespace std;

int main(){
  int n;
  int i,j,ans=0;
  vector <int> v,w;
  
  cin>>n;
  
 for(i=0;i<n;i++){
   cin>>j;
   v.push_back(j);
 }
  for(i=0;i<n-1;i*+){
    j=v[i]+v[i+1];
    w.push_back(j>);
  }
  sort(w.begin(),w.end());
  
  for(i=0;i<n;i++){
    ans+=v[i];
  }
  cout<<ans-2*w[0]<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:20: error: expected primary-expression before ')' token
   18 |   for(i=0;i<n-1;i*+){
      |                    ^
a.cc:20:19: error: expected primary-expression before ')' token
   20 |     w.push_back(j>);
      |                   ^
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> s(N-1);
  int result = 0;
  for(int i=0;i<(N-1);i++){
    s[i] = a[i] + a[i+1];
    result += a[i];
  }
  result += a[N];

  int r = min(s);
  cout << result - 2*r << endl;
  return 0;
}






Compiler output:
a.cc: In function 'int main()':
a.cc:22:14: error: no matching function for call to 'min(std::vector<int>&)'
   22 |   int r = min(s);
      |           ~~~^~~
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:   candidate expects 2 arguments, 1 provided
/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, 1 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:   template argument deduction/substitution failed:
a.cc:22:14: note:   'std::vector<int>' is not derived from 'std::initializer_list<_Tp>'
   22 |   int r = min(s);
      |           ~~~^~~
/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:   candidate expects 2 arguments, 1 provided
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> s(N-1);
  int result = 0;
  for(int i=0;i<(N-1);i++){
    s[i] = a[i] + a[i+1];
    result += a[i];
  }
  result += a[N];

  int r = min(s);
  cout << result - 2*r << endl;
}






Compiler output:
a.cc: In function 'int main()':
a.cc:22:14: error: no matching function for call to 'min(std::vector<int>&)'
   22 |   int r = min(s);
      |           ~~~^~~
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:   candidate expects 2 arguments, 1 provided
/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, 1 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:   template argument deduction/substitution failed:
a.cc:22:14: note:   'std::vector<int>' is not derived from 'std::initializer_list<_Tp>'
   22 |   int r = min(s);
      |           ~~~^~~
/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:   candidate expects 2 arguments, 1 provided
Language: C++

#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<queue>
#include<stack>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<algorithm>
#include<math.h>
using namespace std;

int main(){
  int n,i=0;
  cin >> n;
  vector<int> a(n);
  for(;i<n;i++){
    cin >> a[i];
    if(i>0){
      if(a[i-1]<0){
        if(a[i]<0){
          a[i-1]*=-1;
          a[i]*=-1;
        }else {
          if(a[i]+a[i-1]<=0){
            a[i]*=-1;
            a[i-1]*=-1;
          }
        }
      }
    }
  }
  for(i=n-1;i>0;i--){
    if(a[i]+a[i-1]<=0){
      a[i]*=-1;
      a[i-1]*=-1;
    }
  }
  }
  long long ans=0;
  for(i=0;i<n;i++){
    ans+=a[i];
  }
  cout << ans << endl;
}

Compiler output:
a.cc:42:3: error: expected unqualified-id before 'for'
   42 |   for(i=0;i<n;i++){
      |   ^~~
a.cc:42:11: error: 'i' does not name a type
   42 |   for(i=0;i<n;i++){
      |           ^
a.cc:42:15: error: 'i' does not name a type
   42 |   for(i=0;i<n;i++){
      |               ^
a.cc:45:3: error: 'cout' does not name a type
   45 |   cout << ans << endl;
      |   ^~~~
a.cc:46:1: error: expected declaration before '}' token
   46 | }
      | ^
Language: C

#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=int(a);i<int(b);++i)
using namespace std;
typedef long long ll;
int INF = (1LL << 30) - 1;
int MOD = 1e9+7;
main(){
    int N;
    cin >> N;
    vector<ll> A(N);
    ll dp[N+1][2] = {};
    rep(i,0,N)cin >> A[i];
    dp[1][0] = dp[1][1] = A[0];
    dp[2][0] = A[0] + A[1];
    dp[2][1] = -A[0] - A[1];
    rep(i,2,N){
        dp[i+1][0] = max(dp[i][0] + A[i], dp[i][1] + A[i]);
        dp[i+1][1] = max(dp[i][0] - A[i-1] * 2 - A[i], dp[i][1] + A[i-1] * 2 - A[i]);
    }
    rep(i,0,N+1){
        //cout << dp[i][0] << " " << dp[i][1] << endl;
    }
    cout << max(dp[N][0],dp[N][1]) << endl;
}

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

#include<stdio.h>
int main(void)
{	
	int i,n,mai=0,min,sum=0,a[100000]={};
	scanf("%d",&n);
	for(i=0;i<n;i++)
	{	
		scanf("%d",&a[i]);
	}
	if(a[0]<0)
	{	
		a[0]*=-1;
		mai++;
	}
	min=a[0];
	sum+=a[0];
	for(i=1;i<n;i++)
	{	
		if(a[i]<0)
		{	a[i]*=-1;
			mai++;
		}
		sum+=a[i];
		if(a[i]<min)
			min=a[i];
	}
	if(mai%==1)
	{	
		sum-=2*min;
	}
	printf("%d\n",sum);
	return 0;
}


Compiler output:
main.c: In function 'main':
main.c:27:17: error: expected expression before '=' token
   27 |         if(mai%==1)
      |                 ^
Language: C++

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


vector<long long> v;
int main(){
	long long n,a,x=0,y,ans=0;
	cin >> n;
	y=n-1;
	
	for(int i=0;i<n;i++){
		cin >> a;
		v.push_back(a);
	}
	sort(v.begin(),v.end());
	
	for(int i=0;i<n;i++){
		if(v[x]>(-v[y]){
			ans+=v[x];
			x++;
		}
		else{
			ans+=(-v[y]);
			y--;
		}
		if(x==y) break;
	}
	
	cout << ans << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:32: error: expected ';' before '{' token
   18 |                 if(v[x]>(-v[y]){
      |                                ^
      |                                ;
a.cc:22:17: error: expected primary-expression before 'else'
   22 |                 else{
      |                 ^~~~
a.cc:21:18: error: expected ')' before 'else'
   21 |                 }
      |                  ^
      |                  )
   22 |                 else{
      |                 ~~~~
a.cc:18:19: note: to match this '('
   18 |                 if(v[x]>(-v[y]){
      |                   ^
Language: C++


#include"pch.h"
#include <iostream>
#include <vector>
#include <stack>
#include <queue>
#include <string>
#include <algorithm>
#include <math.h>
#include <map>
using namespace std;
#define lint long long
static const int INF = 1 << 22;
#define pii pair<long long,long long>
#define all(x) (x).begin(),(x).end()
/*******source code below********/
int main(void) {
	int N; cin >> N;
	vector<long long> A(N);
	int min = 0;
	for (int i = 0; i < N; i++)
	{
		cin >> A[i];
		if (A[i] < 0) min++;
	}
	int sum = 0;
	if (min % 2 == 0) {
		for (int i = 0; i < N; i++) {
			sum += abs(A[i]);
		}
	}
	else {
		vector<lint> B(N);
		for (int i = 0; i < N; i++)
		{
			B[i] = abs(A[i]);
		}
		sort(B.begin(), B.end());
		for (int i = 0; i < N; i++)
		{
			sum += B[i];
		}
		sum -= 2 * B[0];
	}
	/*while (true) {
		bool check = false;
		for (int i = 0; i < N - 1; i++) {
			if ((A[i] + A[i + 1]) < -1 * (A[i] + A[i + 1])) {
				A[i] *= -1;
				A[i + 1] *= -1;
				check = true;
			}
		}
		if (!check) break;
	}*/

	cout << sum << endl;

	return 0;
}

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

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

int main(){
  int N;
  cin>>N;
  int count=0;
  long int mn=10000000000;
  vector<long int> A;
  for(int i=0; i<N; ++i){
    long int a;
    cin>>a;
    if(a<0) count++;
    if(mn>a) mn=a;
    A.push_back(abs(a));
  }
  
  ans=0;
  for(int i=0; i<N; ++i){
    ans+=A[i];
  }
  if(count%2==1) ans-=mn*2;
  
  cin<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:3: error: 'ans' was not declared in this scope; did you mean 'abs'?
   23 |   ans=0;
      |   ^~~
      |   abs
Language: C++

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

int main(){
  int N;
  cin>>N;
  int count=0;
  vector<int> A;
  for(int i=0; i<N; ++i){
    int a;
    cin>>a;
    if(a<0) count++;
    A.push_back(abs(a));
  }
  sort(A.begin(),A.end());
  
  ans=0;
  for(int i=1; i<N; ++i){
    ans+=A[1];
  }
  if(count%2==1) ans-=A[0];
  else ans+=A[0];
  
  cin<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:3: error: 'ans' was not declared in this scope; did you mean 'abs'?
   22 |   ans=0;
      |   ^~~
      |   abs
Language: C++

#include<iostream>
#include<stdint>
using namespace std; // 575

const int MAX = 100001;
const int INF = 1073741823; // 10^30-1、使わない辺とかに用いる
int main() {
	int N;
	static int A[MAX], mi = INF, neg = 0, zero = 0;
	int64_t sum = 0;
	cin >> N;
	for (int i = 0;i < N;++ i) {
		cin >> A[i];
		if (A[i] < 0) ++ neg;
		else if (A[i] == 0) ++ zero;
		mi = min(mi, abs(A[i]));
		sum += abs(A[i]);
	}
	
	if (neg & 1 & !zero) sum -= mi << 1;
	cout << sum;
	return 0;
}
/*
31536000のコメント解説欄
ここテンプレで用意してるから、A問題とかだとこの先空欄の危険あり
また、コンテスト後に https://31536000.hatenablog.com/ で解説していると思うので、良かったら読んでねー

操作によって負数の位置は移動させることができ、偶数個は消すことができる

*/

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

#include <iostream>
#include <vector>
#include <deque>
using namespace std;
#define ll long long int
#define ld long long double
#define vi vector<long long int>
#define vc vector<char>
#define vs vector<string>
#define pb push_back
#define mp make_pair
#define f(i,a,n) for(i = (a); i < (n); i++)
#define fi(i,a,n) for(i = (a); i <= (n); i++)
#define F first
#define S second

int main() {
    ll n;
    cin>>n;
    vi v(n);
    bool  c = false;
    ll count = 0;
    ll neg = 0;
    ll min = LLONG_MAX;
    for(ll i=0;i<n;i++){
        cin>>v[i];
        if(v[i]==0){
            c = true;
        }
        count += abs(v[i]);

        if(v[i]<0){
            neg++;
        }

        if(abs(v[i])<min){
            min = abs(v[i]);
        }

    }

    if(c || neg%2==0){
        cout<<count<<endl;
    }
    else{
        cout<<count - 2*min <<endl;
    }

}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:14: error: 'LLONG_MAX' was not declared in this scope
   24 |     ll min = LLONG_MAX;
      |              ^~~~~~~~~
a.cc:4:1: note: 'LLONG_MAX' is defined in header '<climits>'; this is probably fixable by adding '#include <climits>'
    3 | #include <deque>
  +++ |+#include <climits>
    4 | using namespace std;
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.at(i);
  }
  
  for(int i = 0; i <n-1 ; i++){
    if(a.at(i) + a.at(i++) <0){
      a.at(i) = a.at(i) * (-1);
      a.at(i++) = a.at(i++) * (-1);
      i = 0;
    }
  }
  
  int x = 0;
  for(int i =0 ; i<n ; i++){
    x += a.at(i);
  }
  
  cout << x << endl;
}
  }
  

Compiler output:
a.cc:27:3: error: expected declaration before '}' token
   27 |   }
      |   ^
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];
	}
	dp[0][1] = A[0];
	dp[1][1] = -A[0];
	for (int i = 1; i < N; i++) {
		dp[0][i + 1] = max(dp[0][i] + A[i], dp[1][i] - A[i]);
		dp[1][i + 1] = max(dp[1][i] + A[i], dp[0][i] - A[i]);
	}

	cout << dp[0][N] << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:9: error: 'dp' was not declared in this scope; did you mean 'dup'?
   10 |         dp[0][1] = A[0];
      |         ^~
      |         dup
Language: Java

#include <bits/stdc++.h>
using namespace std;
#define int long long
int MOD = (int)1e9 + 7;
int INF = (int)2e18;
// Comment out below and program paste

// #include "UnionFind.hpp"
// #include "power.hpp"

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int N;
    cin >> N;
    vector<int> A(N);
    int absMin = (int)1e9;
    int minusCount = 0;
    for (int i = 0; i < N; i++) {
        cin >> A[i];
        absMin = min(absMin, abs(A[i]));
        if (A[i] < 0) ++minusCount;
    }
    int answer = 0;
    for (int i = 0; i < N; i++) {
        answer += abs(A[i]);
    }
    if (minusCount % 2 == 1) answer -= absMin * 2;
    cout << answer << endl;
}


Compiler output:
Main.java:1: error: illegal character: '#'
#include <bits/stdc++.h>
^
Main.java:1: error: class, interface, enum, or record expected
#include <bits/stdc++.h>
         ^
Main.java:3: error: illegal character: '#'
#define int long long
^
Main.java:3: error: class, interface, enum, or record expected
#define int long long
        ^
Main.java:5: error: unnamed classes are a preview feature and are disabled by default.
int INF = (int)2e18;
^
  (use --enable-preview to enable unnamed classes)
Main.java:12: error: not a statement
    ios::sync_with_stdio(false);
    ^
Main.java:15: error: not a statement
    cin >> N;
        ^
Main.java:16: error: not a statement
    vector<int> A(N);
                  ^
Main.java:20: error: not a statement
        cin >> A[i];
            ^
Main.java:29: error: not a statement
    cout << answer << endl;
                   ^
Main.java:12: error: ';' expected
    ios::sync_with_stdio(false);
                        ^
Main.java:16: error: ';' expected
    vector<int> A(N);
                 ^
Main.java:16: error: ';' expected
    vector<int> A(N);
                   ^
13 errors
Language: C++

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

int main(){
  long long n,a,mn,sum,neg=1,z=0;
  scanf("%lld",&n);
  for(int i=0;i<n;i++){
    scanf("%lld",&a);
    sum+=a,mn=min(mn,abs(a));
    if(a==0)z=1;
    if(a<0)neg=neg^1;
  }
  if(neg||z)sum-=mn;
  printf("%lld\n",ans);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:19: error: 'ans' was not declared in this scope; did you mean 'abs'?
   14 |   printf("%lld\n",ans);
      |                   ^~~
      |                   abs
Language: C++

#include<stdio.h>
using namespace std;

int main(){
  long long n,a,mn,sum,neg=1,z=0;
  scanf("%lld",&n);
  for(int i=0;i<n;i++){
    scanf("%lld",&a);
    sum+=a,mn=min(mn,abs(a));
    if(a==0)z=1;
    if(a<0)neg=neg^1;
  }
  if(neg||z)sum-=mn;
  printf("%lld\n",ans);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:22: error: 'abs' was not declared in this scope
    9 |     sum+=a,mn=min(mn,abs(a));
      |                      ^~~
a.cc:9:15: error: 'min' was not declared in this scope; did you mean 'mn'?
    9 |     sum+=a,mn=min(mn,abs(a));
      |               ^~~
      |               mn
a.cc:14:19: error: 'ans' was not declared in this scope
   14 |   printf("%lld\n",ans);
      |                   ^~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<ll> vll;
typedef vector<int> vi;
typedef pair<int, int> ii;


int main(){
  int N;cin>>N;
  vll A;
  for (int i=0;i<N;++i){
    ll a;cin>>a;A.push_back(a);
  }

  int cnt=0;
  int zero_flag=0;
  for (int i=0;i<N;++i){
    if(a[i]<0){cnt++;}
    if(a[i]==0){zero_flag=1;}
  }

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

  if(cnt%2==0|| zero_flag==1){
    cout << ans << endl;
    return 0;
  }

  ll abs_min=1e9;
  for (int i=0;i<N;++i){
    abs_min=min(abs_min, abs(a[i]));
  }
  cout << ans-2*abs_min << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:8: error: 'a' was not declared in this scope
   19 |     if(a[i]<0){cnt++;}
      |        ^
a.cc:20:8: error: 'a' was not declared in this scope
   20 |     if(a[i]==0){zero_flag=1;}
      |        ^
a.cc:25:10: error: 'a' was not declared in this scope
   25 |     ans+=a[i];
      |          ^
a.cc:35:30: error: 'a' was not declared in this scope
   35 |     abs_min=min(abs_min, abs(a[i]));
      |                              ^
Language: C++

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

int main(){
  int n;
  cin >> n;
  vector<long>a(n);
  int mcnt=0;
  for(int i=0; i<n; i++){
    long aa;
    cin >> aa;
    a[i]=abs(aa);
    if(aa<0)mcnt++;
  }
  sort(a.rbegin(), a.rend());
  long ret=accumulate(a.begin(), a.end(), 0L);
  if(mcnt%2==1)ret-=2*a[n-1];
  cout << ret;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:12: error: 'accumulate' was not declared in this scope
   19 |   long ret=accumulate(a.begin(), a.end(), 0L);
      |            ^~~~~~~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int n; cin >> n;
  string s; cin >> s;
  int cnt = 0
  for(int i = 0; i < n - 1; i++){
    if(s.at(i) == '.')
    elseif(s.at(i + 1) == '.'){
      s.at(i +1) = '#';
      cnt++;
    }
  }
  cout << cnt;
      
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: expected ',' or ';' before 'for'
    7 |   for(int i = 0; i < n - 1; i++){
      |   ^~~
a.cc:7:18: error: 'i' was not declared in this scope
    7 |   for(int i = 0; i < n - 1; i++){
      |                  ^
Language: C++

#include <iostream>
#include <string>
#include <math.h>
#include <vector>
#include <algorithm>
#include <iomanip>
#include <set>
#include <queue>
#include <map>
using namespace std;

#define mod 1000000007
#define ten5 100005
#define ten52 200005
#define ten6 1000005
#define PI 3.1415926

typedef long long int ll;

ll num[ten52];
ll num2[ten52];

int main()
{
    //int m,n,o=0,i,j,k;
    long long int sum=0,sum2=0,n1=0,n2=0,n3,range;
    double ans=0.0,half;
    long long int m,n,o,i,j,k=1;
    long long int a,a1,a2,a3,a4,a5,a6;
    a=a1=a2=a3=a4=a5=a6=0;
    //float f,g,h;
    string s,s1;
    //priority_queue<long long int> pq;
    //vector<pair<ll,ll>> vint;
    //map<pair<ll,ll>,ll> mp;
    //list<int> li;
    //map<string,int>::iterator iter;
    //set<int> sint;
    char now,pre,c;
    cin>>n;
    cin>>s;
    for(i=1;i<=n;i++)
    {
        num[i]=num[i-1]+(s[i-1]=='#');
    }
    for(i=n-1;i>=0;i--)
    {
        num2[i]=num2[i+1]+(s[i]=='.');
    }
    a=num[0]+num2[0];
    for(i=0;i<=n;i++)
    {
        a=min(a,num[i]+num2[i]);
        //cout<<num[i]<<" "<<num2[i]<<"->"<<a<<endl;
    }
    cout<<a;
    return 0;
}
.#..####.
//0011123455
//4332111110


Compiler output:
a.cc:59:2: error: stray '#' in program
   59 | .#..####.
      |  ^
a.cc:59:5: error: stray '##' in program
   59 | .#..####.
      |     ^~
a.cc:59:7: error: stray '##' in program
   59 | .#..####.
      |       ^~
a.cc:59:1: error: expected unqualified-id before '.' token
   59 | .#..####.
      | ^
Language: C++

#include <iostream>
#include <string>
#include <math.h>
#include <vector>
#include <algorithm>
#include <iomanip>
#include <set>
#include <queue>
#include <map>
using namespace std;

#define mod 1000000007
#define ten5 100005
#define ten6 1000005
#define PI 3.1415926

typedef long long int ll;

int x[55],y[55];
//int num[ten6];

int main()
{
    //int m,n,o=0,i,j,k;
    long long int sum=0,sum2=0,n1=0,n2=0,n3;
    double ans=0.0,half;
    long long int m,n,o,i,j,k=1,now=1;
    long long int a,a1,a2,a3,a4,a5,a6;
    a=a1=a2=a3=a4=a5=a6=0;
    //float f,g,h;
    char c;
    string s,s1;
    //priority_queue<long l ong int> pq;
    vector<pair<ll,ll>> vint;
    map<pair<ll,ll>,ll> mp;
    //list<int> li;
    //map<string,int>::iterator iter;
    //set<int> sint;
    char str[200005];
    //char now,pre;
    cin>>n;
    for(i=0;i<n;i++)
    {
        cin>>str[i];
    }
    for(i=n-1;i>=0;i--)
    {
        if(str[i]=='.' && range==0) range=1;
        if(range==1 && str[i]=='#')
        {
            sum2++;
            range=0;
        }
        if(str[i]=='.') sum++;
    }
    cout<<min(sum,sum2);
    return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:48:27: error: 'range' was not declared in this scope
   48 |         if(str[i]=='.' && range==0) range=1;
      |                           ^~~~~
a.cc:49:12: error: 'range' was not declared in this scope
   49 |         if(range==1 && str[i]=='#')
      |            ^~~~~
Language: C++

#include <bits/stdc++.h>
#define ft first
#define sc second
#define lb lower_bound
#define ub upper_bound
#define pb push_back
#define pt(sth) cout << sth << "\n"
#define chmax(a, b) {if(a<b) a=b;}
#define chmin(a, b) {if(a>b) a=b;}
#define moC(a, s, b) (a)=((a)s(b)+MOD)%MOD
using namespace std;
typedef long long ll;
typedef pair<ll, ll> P;
static const ll INF=1e18;
static const ll MAX=1e5+7;
static const ll MOD=1e9+7;
ll max(ll a, ll b) {return a>b?a:b;}
ll min(ll a, ll b) {return a<b?a:b;}




int main(void) {
  ll N;
  cin >> N;
  string s;
  cin >> s;
  ll i;
  
  ll loc=0, roc=0;
  for(i=0; i<N; i++) {
    if(s[i]=='o') roc++;
  }
  
  ll ans=roc;
  for(i=0; i<N; i++) {
    if(s[i]=='o') {
      loc++;
      roc--;
    }
    
    chmin(ans, i-loc+xoc);
  }
  
  pt(ans);
  
}
  
  
  
  
  
  
  
  
  
  


Compiler output:
a.cc: In function 'int main()':
a.cc:42:22: error: 'xoc' was not declared in this scope; did you mean 'roc'?
   42 |     chmin(ans, i-loc+xoc);
      |                      ^~~
a.cc:9:27: note: in definition of macro 'chmin'
    9 | #define chmin(a, b) {if(a>b) a=b;}
      |                           ^