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

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<int64_t,int64_t> pll;
typedef vector<int64_t> vl;
int dx[]={1,-1,0,0,1,-1,1,-1};
int dy[]={0,0,1,-1,1,-1,-1,1};
const long double PI = acos(-1);
#define INF (2147483647)
#define mod (1000000007)
#define limit (7368791)
#define rep(i,a,b) for (int64_t i = (a); i < (b); i++)
#define REP(i,n) rep(i,0,n)
#define sz(s) (s).size()
#define ALL(a) begin(a),end(a)
#define mp make_pair
#define pb push_back
#define eb emplace_back
#define fi first
#define se second

void solve() 
{   
    int n;cin>>n;
    ll sum=0,mn=INF;
    int a[n];REP(i,n)cin>>a[i],sum+=abs(a[i]),mn=min(mn,abs(a[i]));
    cout<<sum-mn-mn<<endl;
}

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


Compiler output:
a.cc: In function 'void solve()':
a.cc:27:53: error: no matching function for call to 'min(ll&, int)'
   27 |     int a[n];REP(i,n)cin>>a[i],sum+=abs(a[i]),mn=min(mn,abs(a[i]));
      |                                                  ~~~^~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:27:53: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   27 |     int a[n];REP(i,n)cin>>a[i],sum+=abs(a[i]),mn=min(mn,abs(a[i]));
      |                                                  ~~~^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/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:27:53: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   27 |     int a[n];REP(i,n)cin>>a[i],sum+=abs(a[i]),mn=min(mn,abs(a[i]));
      |                                                  ~~~^~~~~~~~~~~~~~
Language: Java

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

public class Main {
  static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
  static PrintWriter pw = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));
  
  public static void main(String[] args) throws Exception {
    int n = Integer.parseInt(br.readLine());
    String[] split = br.readLine().split(" ");
    long[] arr = new long[n];
    
    for(int i = 0; i < n; i++) {
      arr[i] = Long.parseLong(split[i]);
    }
    long sum = 0;
    long min = Long.MAX_VALUE;
    int negs = 0;
    for(long i : arr) {
      if(i < 0)
        negs++;
      long abs = Math.abs(i);
      min = Math.min(min, abs);
      sum += abs;
    }
    if(negs % 2 == 1)
      sum -= abs;
    pw.println(sum);
    
    pw.close();
  }
}

Compiler output:
Main.java:27: error: cannot find symbol
      sum -= abs;
             ^
  symbol:   variable abs
  location: class Main
1 error
Language: C++

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

int main() {
  int N;
  cin >> N;
  vector<ll> as;
  ll tmp;
  ll negativeCount = 0;
  ll zeroCount = 0;
  for(int i = 0; i < N; ++i) {
    cin >> tmp;
    if(tmp < 0) {
      negativeCount++;
      tmp = -tmp;
    } else if(tmp == 0) {
      zeroCount++;
    }
    as.push_back(tmp);
  }
  sort(as.begin(), as.end());

  ll sum = accumulate(as.begin(), as.end(), 0LL);
  if(zeroCount == 0 && negativeCount % 2 == 1) {
    sum -= as[0] * 2;
  }
  cout << sum << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:3: error: 'sort' was not declared in this scope; did you mean 'short'?
   24 |   sort(as.begin(), as.end());
      |   ^~~~
      |   short
Language: C++

#include <vector>
#include <cstdio>

using namespace std;

#define int long long

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

    // the number of plus
    int np = 0;
    vector<int> v(N);
    int sum = 0;
    for (int i = 0; i < N; i++)
    {
        scanf("%lld", &v[i]);
        if (v[i] >= 0)
            np++;
        v[i] = abs(v[i]);
        sum += v[i];
    }

    int ans;
    if ((N - np) % 2 == 0)
    {
        ans = sum;
    }
    else
    {
        sort(v.begin(), v.end());
        ans = sum - 2 * v[0];
    }

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

Compiler output:
a.cc: In function 'int main()':
a.cc:22:16: error: 'abs' was not declared in this scope
   22 |         v[i] = abs(v[i]);
      |                ^~~
a.cc:33:9: error: 'sort' was not declared in this scope; did you mean 'short'?
   33 |         sort(v.begin(), v.end());
      |         ^~~~
      |         short
Language: C++

#include <bits/stdc++.h>
#define rep0(i, n) for(int i=0; i<(int)(n);i++)

using namespace std;

int main(){
//////////////////////////////////////////////////////
    int n;
    cin >> n;
    int a[n],mi = INT_MAX,mc = 0;
    long long sum = 0, ans;
    rep0(i,n)
    {
        cin >> a[i];
        mi = min(mi, abs(a[i]));
        if(a[i]<0)minuscnt ++;
        sum += abs(a[i]);
    }
    cout << sum-(mc%2?mi*2:0) << endl;

//////////////////////////////////////////////////////
// Ctrl + Opt + N to make
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:16:19: error: 'minuscnt' was not declared in this scope
   16 |         if(a[i]<0)minuscnt ++;
      |                   ^~~~~~~~
Language: C++

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

int main() {
  int n;
  cin>>n;
  vector <int> a = vector <int> (n);
  int m=0;
  
  
  for(int i=0; i <n; i++){
    cin>> a.at(i);
    if(a.at(i)<m)
      m=a.at(i);
  }
  int ans =0;

    for(int i=0;i<n;i++){
      ans+=std::abs(a.at(i));
    }


  if(n/2==0){

    cout << ans<<endl;
  }else {
cout << ans -2*m< <endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:27:19: error: expected primary-expression before '<' token
   27 | cout << ans -2*m< <endl;
      |                   ^
Language: C++

#include <iostream>
#include <iomanip>
#include <cstdio>
#include <math.h>
#include <vector>
#include <map>
#include <queue>
#include <utility>
#include <algorithm>
using namespace std;
int main() {
  int N;
  cin >> N;
  vector <int> A(N);
  long long sum   = 0;
  long long m     = 1e9 + 1;
  long long count = 0;
  for (int i = 0; i < N; i++) {
	  cin >> A[i];
	  sum += abs(A[i]);
	  m    = min(abs(A[i]), m);
	  if (A[i] < 0) {
		  count++;
		}
	}
  cout << sum - (count % 2 == 0 ? 0 : 2 * m) << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:21: error: no matching function for call to 'min(int, long long int&)'
   21 |           m    = min(abs(A[i]), m);
      |                  ~~~^~~~~~~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:21:21: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   21 |           m    = min(abs(A[i]), m);
      |                  ~~~^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:9:
/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:21:21: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   21 |           m    = min(abs(A[i]), m);
      |                  ~~~^~~~~~~~~~~~~~
Language: C++

/*Function Template*/
#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;
const int mod = 1000000007;
#define rep(i, n) for(ll i = 0; i < (n); i++)
#define ALL(a)  (a).begin(),(a).end()
#define IOS ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);


ll Len(ll n) {
  ll s=0;
  while(n!=0) s++, n/=10;
  return s;
}


ll Sint(ll n) {
  ll m=0,s=0,a=n;
  while(a!=0) s++, a/=10;
  for(ll i=s-1;i>=0;i--) m+=n/((ll)pow(10,i))-(n/((ll)pow(10,i+1)))*10;
  return m;
}


ll Svec(vector<ll> v){
  ll n=0;
  for(ll i=0;i<v.size();i++) n+=v[i];
  return n;
}


ll GCD(ll a,ll b){
  ll r,tmp;
/*自然数 a > b を確認・入替*/
  if(a<b){
    tmp=a,a=b,b=tmp;
  }
/*ユークリッドの互除法*/
  r=a%b;
  while(r!=0){
    a=b,b=r,r=a%b;
  }
  return b;
}


ll LCM(ll a,ll b){
  ll c=a,d=b,r,tmp;
/*自然数 a > b を確認・入替*/
  if(a<b){
    tmp=a,a=b,b=tmp;
  }
/*ユークリッドの互除法*/
  r=a%b;
  while(r!=0){
    a=b,b=r,r=a%b;
  }
  return c/b*d;
}


ll Factorial(ll n){
  ll m=1;
  while(n>=1) m*=n,n--;
  return m;
}

vector<pair<char,ll>> runlength(string s,vector<pair<char,ll>> p){
  ll x=1;
  if(s.size()==1){
    p.push_back(pair<char,ll>(s[0],1));
    return p;
  }
  for(ll i=0;i<s.size()-1;i++){
    if(s[i]==s[i+1]){
      x++;
      if(i==s.size()-2){
        p.push_back(pair<char,ll>(s[i],x));
      }
    }else{
      p.push_back(pair<char,ll>(s[i],x));
      x=1;
      if(i==s.size()-2){
        p.push_back(pair<char,ll>(s[s.size()-1],x));
      }
    }
  }
  return p;
}



/*↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓*/
int main() {
  IOS;
  ll n;
  cin>>n;
  vector<ll> v(n);
  ll a=0;
  rep(i,n){
    cin>>v[i];
    a++;
    v[i]=abs(v[i]);
  }
  if(ans%2==0){
    cout<<Svec(v)<<endl;
  }else{
    sort(ALL(v));
    cout<<Svec(v)-2*v[0]<<endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:106:6: error: 'ans' was not declared in this scope; did you mean 'abs'?
  106 |   if(ans%2==0){
      |      ^~~
      |      abs
Language: C++

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

using namespace std;

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

int main(){
  long int n,c = 0,b = 0,min;
  cin >> n;

  for(int i = 0; i < n; ++i){
    long int a;
    cin >> a;
    if(i == 0)
      min = a;
    if(a < 0)
      c++;
    b += abs(a);
    if(abs(a) < abs(min)){
      min = abs(a);
    }
  }

  cout << (c % 2 == 0 ? b : b - min*2) << endl;
}

#include <cmath>
#include <algorithm>

using namespace std;

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

int main(){
  long int n,c = 0,b = 0,min;
  cin >> n;
  vector<int> v;

  for(int i = 0; i < n; ++i){
    long int a;
    cin >> a;
    if(i == 0)
      min = a;
    if(a <= 0)
      c++;
    b += abs(a);
    if(abs(a) < abs(min)){
      min = abs(a);
    }
  }

  cout << (c % 2 == 0 ? b : b - min*2) << endl;
}


Compiler output:
a.cc:2:10: fatal error: vector#include <iostream: No such file or directory
    2 | #include <vector#include <iostream>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

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

int main()
{
	int n;
  cin>>n;
  ll arr[n],a;
  ll min=1000000005;
  int val=0,k;
  for(int i=0;i<n;i++)
  {
    cin>>a;
    if(a<0){
      val=1-val;
      a=-a;
      k=i;
    }
    arr[i]=a;
    sum+=arr[i];
  }
  if(val==0)
    cout<<sum<<endl;
  else{
    min=arr[n-1];
    for(int i=n-1;i>=k;i--)
    {
      if(min>arr[i])
        min=arr[i];
    }
    cout<<(sum-2*min)<<endl;
  }
  return 0;
}
  
  

Compiler output:
a.cc: In function 'int main()':
a.cc:22:5: error: 'sum' was not declared in this scope
   22 |     sum+=arr[i];
      |     ^~~
a.cc:25:11: error: 'sum' was not declared in this scope
   25 |     cout<<sum<<endl;
      |           ^~~
a.cc:33:12: error: 'sum' was not declared in this scope
   33 |     cout<<(sum-2*min)<<endl;
      |            ^~~
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n;i>0;i--)
#define rep1(i,s,n) for(int i=s;i<n;i++)
#define max0(a,b,c) max(max(a,b),c)
#define min0(a,b,c) min(min(a,b),c) 
using namespace std;
using Graph = vector<vector<int>>;
typedef long long ll;

const int max_n=100000;
int n;
ll a[max_n+1];

void solve(){
    ll ans=0,hu=0;
    bool flag=false;
    rep(i,n){
        if(a[i]==0) flag=true;
        else if(a[i]<0) hu++;
    }
    if(flag || hu%2==0){
        rep(i,n) ans+=abs(a[i]);
    }else{
        rep(i,n) ans+=abs(a[i]);
        priority_queue<ll,vector<ll>,greater<ll>> p;
        priority_queue<ll,vector<ll>,greater<ll>> m;
        rep(i,n){
            if(a[i]>0) p.push(a[i]);
            else m.push(abs(a[i]));
        }
        if(p.empty()) ans-=2*m.top();
        else ans2-=*min(p.top(),m.top());
    }
    cout << ans;
}

int main(){
    cin >> n;
    rep(i,n) cin >> a[i];
    solve();
}

Compiler output:
a.cc: In function 'void solve()':
a.cc:33:14: error: 'ans2' was not declared in this scope; did you mean 'ans'?
   33 |         else ans2-=*min(p.top(),m.top());
      |              ^~~~
      |              ans
a.cc:33:20: error: invalid type argument of unary '*' (have 'long long int')
   33 |         else ans2-=*min(p.top(),m.top());
      |                    ^~~~~~~~~~~~~~~~~~~~~
Language: C++

#include <iostream>
#include <vector>
#define rep(i, n) for (int i = 0; i < (n); i++)
using namespace std;
int main() {
  const int INF = 1001001001;
  long long n; cin >> n;
  vector<long long> a(n);
  rep(i, n) cin >> a[i];

long long count_1 = 0;
long long count_2 = 0;
rep(i,n) {
  if (a[i] == 0) ++count_1; 
  if (a[i] < 0) ++count_2;
}
 rep(i, n) a[i] = abs(a[i]);
 int minnum = INF;
 rep(i, n) minnum = min(minnum, a[i]);
long long ans = 0;
rep(i,n) ans += a[i];
if((count_2 % 2 == 0) || count_1 != 0) cout << ans << endl;
else cout << ans - minnum*2 << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:24: error: no matching function for call to 'min(int&, __gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type&)'
   19 |  rep(i, n) minnum = min(minnum, a[i]);
      |                     ~~~^~~~~~~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:19:24: note:   deduced conflicting types for parameter 'const _Tp' ('int' and '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'})
   19 |  rep(i, n) minnum = min(minnum, a[i]);
      |                     ~~~^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
Language: C++

#include <iostream>
#include <vector>
#include <functional>
#include <algorithm>
#include <numeric>
#include <string>
#include <map>
#include "lstm_2/Matrix.hpp"
using namespace std;

typedef long long ll;
int main()
{
        int N;
        cin >> N;
        vector<ll> A(N);
        ll All = 0;
        ll MinasCount=0;
        ll MinNum = 1000000001;
        for(int i=0; i<N; i++){
                cin >> A[i];
                if(A[i] < 0){
                         All += -A[i];
                        MinasCount ++;
                }
                else
                        All += A[i];
                if(MinNum > labs(A[i])) MinNum = labs(A[i]);
        }
        if(MinasCount % 2 == 0) cout << All;
        else cout << All - 2*MinNum;

}

Compiler output:
a.cc:8:10: fatal error: lstm_2/Matrix.hpp: No such file or directory
    8 | #include "lstm_2/Matrix.hpp"
      |          ^~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

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

typedef long long ll;

int main(){
  int N;
  cin >> N;
  ll mxans = 0;
  ll ans = 0;
  int minus_num = 0;
  ll abs_min = 10000000000;
  vector<int> A(N);
  for(int i=0; i<N; i++){
    cin >> A.at(i);
    if(A.at(i) < 0){
      minus_num++;
    }
  }
  
  for(int i=0; i<N; i++){
    abs_min = min(abs_min, abs(A.at(i)));
    mxans += abs(A.at(i));
  }
  
  if(minus_num % 2 ==0){
    ans = mxans;
  }
  else{
    ans = mxans - abs_min*2;
  }
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:18: error: no matching function for call to 'min(ll&, int)'
   22 |     abs_min = min(abs_min, abs(A.at(i)));
      |               ~~~^~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:22:18: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   22 |     abs_min = min(abs_min, abs(A.at(i)));
      |               ~~~^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/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:22:18: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   22 |     abs_min = min(abs_min, abs(A.at(i)));
      |               ~~~^~~~~~~~~~~~~~~~~~~~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main (){
  int n;
  cin >> n;
  vector<int> a(n);
  int b;
  long long int ans = 0;
  for(int i = 0;i < n;i++){
    cin >> b;
    a[i] = abs(b);
    ans += abs(b);
  }
  sort(a.begin(),a.end());
  ans -= 2 * a[i];
  cout << ans;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:16: error: 'i' was not declared in this scope
   15 |   ans -= 2 * a[i];
      |                ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main (){
  int n;
  cin >> n;
  vector<int> a(n);
  int b;
  long long int ans = 0;
  for(int i = 0;i < n;i++){
    cin >> b;
    a[i] = abs(b);
    ans += abs(b);
  }
  sort(a.begin,a.end);
  ans -= 2 * a[i];
  cout << ans;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:7: error: no matching function for call to 'sort(<unresolved overloaded function type>, <unresolved overloaded function type>)'
   14 |   sort(a.begin,a.end);
      |   ~~~~^~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algo.h:4762:5: note: candidate: 'template<class _RAIter> void std::sort(_RAIter, _RAIter)'
 4762 |     sort(_RandomAccessIterator __first, _RandomAccessIterator __last)
      |     ^~~~
/usr/include/c++/14/bits/stl_algo.h:4762:5: note:   template argument deduction/substitution failed:
a.cc:14:7: note:   couldn't deduce template parameter '_RAIter'
   14 |   sort(a.begin,a.end);
      |   ~~~~^~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algo.h:4793:5: note: candidate: 'template<class _RAIter, class _Compare> void std::sort(_RAIter, _RAIter, _Compare)'
 4793 |     sort(_RandomAccessIterator __first, _RandomAccessIterator __last,
      |     ^~~~
/usr/include/c++/14/bits/stl_algo.h:4793:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:86:
/usr/include/c++/14/pstl/glue_algorithm_defs.h:292:1: note: candidate: 'template<class _ExecutionPolicy, class _RandomAccessIterator, class _Compare> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void> std::sort(_ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Compare)'
  292 | sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp);
      | ^~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:292:1: note:   candidate expects 4 arguments, 2 provided
/usr/include/c++/14/pstl/glue_algorithm_defs.h:296:1: note: candidate: 'template<class _ExecutionPolicy, class _RandomAccessIterator> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void> std::sort(_ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator)'
  296 | sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last);
      | ^~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:296:1: note:   candidate expects 3 arguments, 2 provided
a.cc:15:16: error: 'i' was not declared in this scope
   15 |   ans -= 2 * a[i];
      |                ^
Language: C++

#include<bits/stdc++.h>
int main (){
  int n;
  cin >> n;
  vector<int> a(n);
  int b;
  long long int ans = 0;
  for(int i = 0;i < n;i++){
    cin >> b;
    a[i] = abs(b);
    ans += abs(b);
  }
  sort(a.begin,a.end);
  ans -= 2 * a[i];
  cout << ans;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    4 |   cin >> n;
      |   ^~~
      |   std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:5:3: error: 'vector' was not declared in this scope
    5 |   vector<int> a(n);
      |   ^~~~~~
a.cc:5:3: note: suggested alternatives:
In file included from /usr/include/c++/14/vector:66,
                 from /usr/include/c++/14/functional:64,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:53:
/usr/include/c++/14/bits/stl_vector.h:428:11: note:   'std::vector'
  428 |     class vector : protected _Vector_base<_Tp, _Alloc>
      |           ^~~~~~
/usr/include/c++/14/vector:93:13: note:   'std::pmr::vector'
   93 |       using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
      |             ^~~~~~
a.cc:5:10: error: expected primary-expression before 'int'
    5 |   vector<int> a(n);
      |          ^~~
a.cc:10:5: error: 'a' was not declared in this scope
   10 |     a[i] = abs(b);
      |     ^
a.cc:13:8: error: 'a' was not declared in this scope
   13 |   sort(a.begin,a.end);
      |        ^
a.cc:13:3: error: 'sort' was not declared in this scope; did you mean 'std::sort'?
   13 |   sort(a.begin,a.end);
      |   ^~~~
      |   std::sort
In file included from /usr/include/c++/14/algorithm:86,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51:
/usr/include/c++/14/pstl/glue_algorithm_defs.h:296:1: note: 'std::sort' declared here
  296 | sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last);
      | ^~~~
a.cc:14:16: error: 'i' was not declared in this scope
   14 |   ans -= 2 * a[i];
      |                ^
a.cc:15:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   15 |   cout << ans;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++


#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <map>
#include <set>
#include <cmath>
#include <random>
#include <queue>

using namespace std;


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

	vector<pair<int ,int>> As;

	int a;
	for(int ni = 0; ni < N; ni++){
		cin >> a;
		As.push_back(make_pair(abs(a), a));
	} 

	sort(As.rbegin(), As.rend());

	int flag = 1;
	long long sum = 0;
	for(int ni = 0; ni < N-1; ni++){
		if (flag * As[ni].second < 0) {
			flag = -1;
		}
		else {
			flag = 1;
		}
		sum += abs(As[ni].second);
	}

	sum += flag * As[N - 1].second;

	printf("%lld", sum);



Compiler output:
a.cc: In function 'int main()':
a.cc:44:29: error: expected '}' at end of input
   44 |         printf("%lld", sum);
      |                             ^
a.cc:16:1: note: to match this '{'
   16 | {
      | ^
Language: C++

#include <bits/stdc++.h>

using namespace std;
#define inputInt(a) int a; cin >> a; 
#define inputInt2(a,b) int a; int b; cin >> a >> b; 
#define inputInt3(a,b,c) int a; int b; int c; cin >> a >> b >> c;
#define inputLong(a) long a;cin >> a;
#define inputIntArray(a,N) int a[N];for(int i=0;i<N;i++){cin >> a[i];}
#define inputLongArray(a,N) long a[N];for(int i=0;i<N;i++){cin >> a[i];}
#define inputDoubleArray(a,N) double a[N];for(int i=0;i<N;i++){cin >> a[i];}
#define inputIntArray2(a,b,N) int a[N]; int b[N]; for(int i=0;i<N;i++){cin >> a[i] >> b[i];}
#define output(answer) cout << answer << endl;
#define fN(i,N)    for(int i=0; i<N; i++)
#define fSE(i,s,e) for(int i=s; i<=e; i++)
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }

int main(){
  //input
  inputLong(N);
  
  vector<long long int> a(N,0), b(N,0);
  long long int sum = 0;
  for(int i=0, i<N; i++){
    cin >> a[i];
    b[i] = abs(a[i]);
    sum += b[i];
  }
  
  sort(a.begin(),a.end());
  sort(b.begin(),b.end());//最も絶対値が小さいa[i]を走査。
  
  long long int minus = lower_bound(a.begin(),a.end(),0)-a.begin();
  long long int ans = 0;
  
  if(minus % 2 == 0 || b[0] == 0){//全て正の整数になる時
    //ans = accumulate(b.begin(),b.end(),0);
    ans = sum;
  }else{
    //ans = accumulate(b.begin(),b.end(),0) - b[0]*2;
    ans = sum - b[0]*2;
  }
  
  //output
  output(ans);
  
  return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:24:17: error: expected ';' before '<' token
   24 |   for(int i=0, i<N; i++){
      |                 ^
      |                 ;
a.cc:24:17: error: expected primary-expression before '<' token
Language: C++

#include <bits/stdc++.h>

using namespace std;
#define inputInt(a) int a; cin >> a; 
#define inputInt2(a,b) int a; int b; cin >> a >> b; 
#define inputInt3(a,b,c) int a; int b; int c; cin >> a >> b >> c;
#define inputLong(a) long a;cin >> a;
#define inputIntArray(a,N) int a[N];for(int i=0;i<N;i++){cin >> a[i];}
#define inputLongArray(a,N) long a[N];for(int i=0;i<N;i++){cin >> a[i];}
#define inputDoubleArray(a,N) double a[N];for(int i=0;i<N;i++){cin >> a[i];}
#define inputIntArray2(a,b,N) int a[N]; int b[N]; for(int i=0;i<N;i++){cin >> a[i] >> b[i];}
#define output(answer) cout << answer << endl;
#define fN(i,N)    for(int i=0; i<N; i++)
#define fSE(i,s,e) for(int i=s; i<=e; i++)
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }

int main(){
  //input
  inputLong(N);
  
  vector<long long int> a(N,0),b(N,0);
  fN(i,N){
    cin >> a[i];
    b[i] = abs(a[i]);
  }
  
  sort(a.begin(),a.end());
  sort(b.begin(),b.end());//最も絶対値が小さいa[i]を走査。
  
  long long int minus = lower_bound(a.begin(),a.end(),0)-a.begin();
  long long long ans = 0;
  
  if(minus % 2 == 0 | b[0] == 0){//全て正の整数になる時
    ans = accumulate(b.begin(),b.end(),0);
  }else{
    ans = accumulate(b.begin(),b.end(),0) - b[0]*2;
  }
  
  //output
  output(ans);
  
  return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:32:13: error: 'long long long' is too long for GCC
   32 |   long long long ans = 0;
      |             ^~~~
Language: C++

#include <bits/stdc++.h>

using namespace std;
#define inputInt(a) int a; cin >> a; 
#define inputInt2(a,b) int a; int b; cin >> a >> b; 
#define inputInt3(a,b,c) int a; int b; int c; cin >> a >> b >> c;
#define inputLong(a) long a;cin >> a;
#define inputIntArray(a,N) int a[N];for(int i=0;i<N;i++){cin >> a[i];}
#define inputLongArray(a,N) long a[N];for(int i=0;i<N;i++){cin >> a[i];}
#define inputDoubleArray(a,N) double a[N];for(int i=0;i<N;i++){cin >> a[i];}
#define inputIntArray2(a,b,N) int a[N]; int b[N]; for(int i=0;i<N;i++){cin >> a[i] >> b[i];}
#define output(answer) cout << answer << endl;
#define fN(i,N)    for(int i=0; i<N; i++)
#define fSE(i,s,e) for(int i=s; i<=e; i++)
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }

int main(){
  //input
  inputLong(N);
  
  vector<long> a(N,0)
  vector<long> b(N,0);
  for(int i=0; i<N; i++){
    cin >> a[i];
    b[i] = abs(a[i]);
  }
  
  sort(a.begin(),a.end());
  sort(b.begin(),b.end());//最も絶対値が小さいa[i]を走査。
  
  int minus = lower_bound(a.begin(),a.end(),0)-a.begin();
  long ans = 0;
  
  if(minus % 2 == 0 | b[0] == 0){//全て正の整数になる時
    ans = accumulate(b.begin(),b.end(),0);
  }else{
    ans = accumulate(b.begin(),b.end(),0) - b[0]*2;
  }
  
  //output
  output(ans);
}


Compiler output:
a.cc: In function 'int main()':
a.cc:23:3: error: expected ',' or ';' before 'vector'
   23 |   vector<long> b(N,0);
      |   ^~~~~~
a.cc:26:5: error: 'b' was not declared in this scope
   26 |     b[i] = abs(a[i]);
      |     ^
a.cc:30:8: error: 'b' was not declared in this scope
   30 |   sort(b.begin(),b.end());//最も絶対値が小さいa[i]を走査。
      |        ^
Language: C++

#include<bits/stdc++.h>
using namespace std; 
#define int long long
int N,a[110000];
int main(){
  cin>>N;
  int ans=0,m=INT_MAX,minus=0;
  for(int i=0;i<N;i++){
    cin>>a[i];
    ans+=abs(a[i]);
    m=min(m,abs(a[i]));
    minus+=a[i]<0;
  }
  if(minus&1)ans-=m;
  cout<<ans<<endl;
}


Compiler output:
cc1plus: error: '::main' must return 'int'
Language: C++

#include<bits/stdc++.h>
using namespace std; 
int N,A[110000];
int main(){
  cin>>N;
  int ans=0,m=INT_MAX,minus=0;
  for(int i=0;i<N;i++){
    cin>>a[i];
    ans+=abs(a[i]);
    m=min(m, abs(a[i]));
    minus+=a[i]<0;
  }
  if(minus&1)ans-=m;
  cout<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:10: error: 'a' was not declared in this scope
    8 |     cin>>a[i];
      |          ^
Language: C

#include<bits/stdc++.h>
using namespace std;
constexpr int64_t mod=1e9+7;

int main()
{
  int64_t n;
  cin>>n;
  std::vector<int64_t> a(n);
  int64_t cnt=0,sum=0;
  for (int i = 0; i < n; ++i)
  {
    int64_t tmp;
    cin>>tmp;
    a[i]=abs(tmp);
    sum+=abs(a[i]);
    cnt+=(tmp<0)? 1:0;
  }

  if(cnt%2!=0) sum-=2*(*min_element(a.begin(), a.end()));
  cout<<sum;
}

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

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int (i)=0; (i)<(n); (i)++)
#define ll long long
#define pp pair<int,int> 
const int INF = 1001001001
//int 2×10の9乗

//vector<vector<int>> a(n, vector<int>(m));
  //rep(i,n){
    //rep(j,m) cin >> a[i][j]; 
  //}
 
int main() {
  int n;
  cin >> n;
  vector<int> a(n);
  rep(i,n) cin >> a[i];
  ll ans=0;
  int neg=0;
  rep(i,n){
    ans += abs(a[i]);
    if(a[i]<0) neg++;
  }
  if(neg%2==1){
    int minx=INF;
    rep(i,n) minx=min(minx,abs(a[i]));
    ans -= minx*2;
  }
   cout << ans << endl;
}    

Compiler output:
a.cc:14:1: error: expected ',' or ';' before 'int'
   14 | int main() {
      | ^~~
Language: C++

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

#ifdef GCC
#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
#endif

#define log(x) cout << (x) << "\n"
#define loop(i, begin, end)for(__typeof(end) i=(begin)-((begin)>(end));i!=(end)-((begin)>(end));i+=1-2*((begin)>(end)))
#define rep(i, n) loop(i, 0, n)

using ll = long long;

#define inv(a, i) a[i]*=-1, a[i+1]*=-1

int main() {
    int n;
    cin >> n;
    vi a(n+1,2E9);
    rep (i, n) cin >> a[i];

    ll sm = 0;
    for (int i=0; i<n; ++i) {
        if (a[i]<0 and a[i+1]<0) inv(a, i);
        else if(a[i] < 0) {
            if ((i<n-2&&a[i+2]<0)||(-a[i]>a[i+1])) inv(a, i);
        }
        sm += a[i];
    }
    log(sm);
}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:5: error: 'vi' was not declared in this scope
   21 |     vi a(n+1,2E9);
      |     ^~
a.cc:22:23: error: 'a' was not declared in this scope
   22 |     rep (i, n) cin >> a[i];
      |                       ^
a.cc:26:13: error: 'a' was not declared in this scope
   26 |         if (a[i]<0 and a[i+1]<0) inv(a, i);
      |             ^
a.cc:30:15: error: 'a' was not declared in this scope
   30 |         sm += a[i];
      |               ^
Language: C++

 #include <bits/stdc++.h>
 
using namespace std;
typedef long long ll;
 
int main() {
  ios_base::sync_with_studio(false); cin.tie(0); cout.tie(0);
  int n; cin>>n;
  vector<long long> a(n);
  int neg = 0;
  ll tot = 0;
  for (int i=0; i<n; i++) {
    cin>>a[i];
    if (a[i]<0) { neg++; a[i]=-a[i]; }
    tot += a[i];
  }
  if (neg%2==0) {
    cout<<tot<<endl;
  } else {
    sort(a.begin(), a.end());
    tot -= 2LL*a[0];
    cout<<tot<<endl;
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:13: error: 'sync_with_studio' is not a member of 'std::ios_base'
    7 |   ios_base::sync_with_studio(false); cin.tie(0); cout.tie(0);
      |             ^~~~~~~~~~~~~~~~
Language: C++

#include <bits/stdc++.h>
 
using namespace std;
typedef long long ll
 
int main() {
  ios_base::sync_with_studio(false); cin.tie(0); cout.tie(0);
  int n; cin>>n;
  vector<long long> a(n);
  int neg = 0;
  ll tot = 0;
  for (int i=0; i<n; i++) {
    cin>>a[i];
    if (a[i]<0) { neg++; a[i]=-a[i]; }
    tot += a[i];
  }
  if (neg%2==0) {
    cout<<tot<<endl;
  } else {
    sort(a.begin(), a.end());
    tot -= 2LL*a[0];
    cout<<tot<<endl;
  }
  return 0;
}

Compiler output:
a.cc:6:1: error: expected initializer before 'int'
    6 | int main() {
      | ^~~
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main() {
  ios_base::sync_with_studio(false); cin.tie(0); cout.tie(0);
  int n; cin>>n;
  vector<long long> a(n);
  int neg = 0;
  ll tot = 0;
  for (int i=0; i<n; i++) {
    cin>>a[i];
    if (a[i]<0) { neg++; a[i]=-a[i]; }
    tot += a[i];
  }
  if (neg%2==0) {
    cout<<tot<<endl;
  } else {
    sort(a.begin(), a.end());
    tot -= 2LL*a[0];
    cout<<tot<<endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:13: error: 'sync_with_studio' is not a member of 'std::ios_base'
    6 |   ios_base::sync_with_studio(false); cin.tie(0); cout.tie(0);
      |             ^~~~~~~~~~~~~~~~
a.cc:10:3: error: 'll' was not declared in this scope
   10 |   ll tot = 0;
      |   ^~
a.cc:14:5: error: 'tot' was not declared in this scope
   14 |     tot += a[i];
      |     ^~~
a.cc:17:11: error: 'tot' was not declared in this scope
   17 |     cout<<tot<<endl;
      |           ^~~
a.cc:20:5: error: 'tot' was not declared in this scope
   20 |     tot -= 2LL*a[0];
      |     ^~~
Language: C++

#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <algorithm>
#include <string>
#include <sstream>
#include <complex>
#include <vector>
#include <list>
#include <queue>
#include <deque>
#include <stack>
#include <map>
#include <set>
#include <numeric>
using namespace std;
typedef long long int ll;

#define EPS (1e-7)
#define INF (1e9)
#define PI (acos(-1))

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


int main() {

    ll N;
    cin >> N;
    vector<ll> A(N);
    ll count = 0;
    ll sum = 0;
    ll minarg = 0;
    REP(i, N) {
        cin >> A[i];
        sum += abs(A[i]);
        if (A[i] < 0) count++;
        minarg = min(minarg, abs(A[i]));
    }
    ll ans;
    if (count % 2 == 0) ans = sum;
    else{
        ans = sum - 2 * A[minarg];
    }
    cout << ans << enld;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:46:20: error: 'enld' was not declared in this scope
   46 |     cout << ans << enld;
      |                    ^~~~
Language: C++

#include<iostream>

#defineint long long
using namespace std;

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

int n;
int a[500000], sum, b[500000], cnt;

signed main()
{
	cin >> n;
	int x = 1000000000;
	for (int i = 1; i <= n; i++) {
		cin >> b[i];
		a[i] = abs(b[i]);
		if (b[i] < 0) cnt++;
		sum += a[i];
		x = min(x, a[i]);
	}
	if (cnt % 2) sum -= 2 * x;
	cout << sum;
}

Compiler output:
a.cc:3:2: error: invalid preprocessing directive #defineint; did you mean #define?
    3 | #defineint long long
      |  ^~~~~~~~~
      |  define
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int main(void){
  int N;
  cin >> N;
  ll A[N];
  ll absmin = 1e9+1;
  int mnsN = 0; 
  ll ans = 0;
  for(int i=0; i<N; i++) {
    cin >> A[i];
    if(A[i] < 0) mnsN++;
    absmin = min(absmin, abs(A[i]));
    ans += abs(A[i]);                
  }
  if(mnsN%2 = 0){
    cout << ans << endl;
  }else{
    cout << ans - 2*absmin << endl;
  }
  return 0;  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:10: error: lvalue required as left operand of assignment
   17 |   if(mnsN%2 = 0){
      |      ~~~~^~
Language: C++

#include<iostream>
#include<algorithm>
using namespace std;
long long n,o;
long long sum;
long long a[100005];
long long b[100005];
bool cmp(long long a,long long y){
	return a<y;
}
int main(){
	cin>>n;
	for(int i=0;i<n;i++){
		cin>>a[i];
		if(a[i]<0){
			b[o++].x=-a[i];
		}
		else b[o++].x=a[i];
	}
	sort(b,b+o,cmp);
		for(int i=0;i<n;i++){
			sum+=b[i].x;
		}
	if(o%2!=0){
		sum-=b[0].x*2;
	}
	cout<<sum;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:32: error: request for member 'x' in 'b[(o ++)]', which is of non-class type 'long long int'
   16 |                         b[o++].x=-a[i];
      |                                ^
a.cc:18:29: error: request for member 'x' in 'b[(o ++)]', which is of non-class type 'long long int'
   18 |                 else b[o++].x=a[i];
      |                             ^
a.cc:22:35: error: request for member 'x' in 'b[i]', which is of non-class type 'long long int'
   22 |                         sum+=b[i].x;
      |                                   ^
a.cc:25:27: error: request for member 'x' in 'b[0]', which is of non-class type 'long long int'
   25 |                 sum-=b[0].x*2;
      |                           ^
Language: Java

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

public class Main{
public static void main (String[] args){
	Scanner sc = new Scanner(System.in);
	int  n = Integer.parseInt(sc.next());
	long Pmin = 0; long Nmin = 0;
	long Psum = 0; long Nsum = 0;
	boolean flag = false;
	List<Long> positive = new ArrayList<Long>();
	List<Long> negative = new ArrayList<Long>();
	for(int i = 0; i < n; i++){
		long a = Long.parseLong(sc.next());
		if(a > 0){
			if(positive.isEmpty())Pmin = a;
			positive.add(a);
			Pmin = Math.min(Pmin,a);
			Psum += a;
		}elseif(a < 0){
			long b = Math.abs(a);
			if(negative.isEmpty())Nmin = b;
			negative.add(b);
			Nmin = Math.min(Nmin,b);
			Nsum += b;
		}else{
			flag = true;
		}
	}
	if(negative.size()%2 == 0 || flag){
		System.out.println(Psum + Nsum);
	}else{
		System.out.println(Psum + Nsum - Math.min(Pmin,Nmin)*2);
	}
}
}


Compiler output:
Main.java:21: error: ';' expected
		}elseif(a < 0){
		              ^
Main.java:27: error: 'else' without 'if'
		}else{
		 ^
2 errors
Language: C++

#include<bits/stdc++.h>
#include<algorithm>
#include<math.h>
#include<string>
#include<iostream>
#include<vector>
#include<cstdlib>
using namespace std;
 
template <class T> using V = vector<T>;
 
template<class T> inline bool chmin(T& a, T b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}
template<class T> inline bool chmax(T& a, T b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}
 
const long long INF = 1LL << 60;
 
using ll = long long;
using db = double;
using st = string;
using ch = char;
using bl = bool;
using vll = V<ll>;
using vpll =V<pair<ll,ll>>;
using vst = V<st>;
using vdb = V<db>;
using vch = V<ch>;
using vbl = V<bl>;
 
 
#define FOR(i,a,b) for(ll i=(a);i<(b);i++)
#define rFOR(i,a,b) for(ll i=(a);i>(b);i--)
#define oFOR(i,a,b) for(ll i=(a);i<(b);i+=2)
#define bgn begin()
#define en end()
#define SORT(a) sort((a).bgn,(a).en)
#define REV(a) reverse((a).bgn,(a).en)
#define M(a,b) max(a,b)
#define rM(a,b) min(a,b)
#define fi first
#define se second
#define sz size()
#define gcd(a,b) __gcd(a,b)
#define co(a) cout<<a<<endl;
#define ci(a) cin>>a;
 
 
ll sum(ll n) {
  ll m=0;
  FOR(i,0,20){
    m+=n%10;
    n/=10;
    if(n==0){
      break;
    }
  }
  return m;
}
 
 
const int MAX = 510000;
const int MOD = 1000000007;
 
long long fac[MAX], finv[MAX], inv[MAX];
 
void Comuse() {
    fac[0] = fac[1] = 1;
    finv[0] = finv[1] = 1;
    inv[1] = 1;
    for (int i = 2; i < MAX; i++){
        fac[i] = fac[i - 1] * i % MOD;
        inv[i] = MOD - inv[MOD%i] * (MOD / i) % MOD;
        finv[i] = finv[i - 1] * inv[i] % MOD;
    }
}
 
 
#define comuse Comuse()
 
ll combi(int n, int k){
    if (n < k) return 0;
    if (n < 0 || k < 0) return 0;
    return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD;
}
 
 
 
 
ll lcm(ll a,ll b){
  ll n;
  n=a/gcd(a,b)*b;
  return n;
}
 
 
/****************************************\
| Thank you for viewing my code:)        |
| Written by RedSpica a.k.a. RanseMirage |
| Twitter:@asakaakasaka                  | 
\****************************************/
 
 
signed main() {
  ll n;
  	ci(n);
  vll A(n);
  ll count=0;
  bl b=false;
  ll ans=0;
  
  FOR(i,0,n){
    ci(A[i])
  if(A[i]==0){
    b=true;
  }
  else if(A[i]<0){
    count++;
  }
  }
  
  FOR(i,0,n){
    A[i]=abs(A[i]);
    ans+=A[i];
  }
  
  SORT(A);
  
  if(b||count%2==){
    co(ans)
  }
  else{
    co(ans-A[0])
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:139:18: error: expected primary-expression before ')' token
  139 |   if(b||count%2==){
      |                  ^
Language: C++


using namespace std;
typedef long long ll;
#define rep(i,n) for(int i=0;i<n;i++)

int main(){
	ll N; cin>>N;
    ll ans=0;
    vector<ll> A(N);
    rep(i,N) cin>>A[i];
  	sort(A.begin(),A.end());
  	ll mcnt=0;
  	rep(i,N){
    	if(A[i]<0) mcnt++;
    }
  	if(mcnt%2==0){
    	rep(i,N){
        	if(A[i]<0) ans-=A[i];
          	else ans+=A[i];
        }
      	printf("%lld",ans);
      	return 0;
    }
  	else if(mcnt==N){
      	A[N-1]*=-1;
    	rep(i,N) ans-=A[i];
     	printf("%lld",ans);
      	return 0;
    }
  	else{
    	rep(i,mcnt-1){
        	ans-=A[i];
        }
      
      	if(abs(A[mcnt-1])>A[mcnt]){
        	ans=ans-A[mcnt-1]-A[mcnt];
        }
      	else{
        	ans=ans+A[mcnt-1]+A[mcnt];
        }
      
      	for(int i=mcnt+1;i<N;i++){
        	ans+=A[i];
        }
      	printf("%lld",ans);
      	return 0;
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:15: error: 'cin' was not declared in this scope
    7 |         ll N; cin>>N;
      |               ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | 
a.cc:9:5: error: 'vector' was not declared in this scope
    9 |     vector<ll> A(N);
      |     ^~~~~~
a.cc:1:1: note: 'std::vector' is defined in header '<vector>'; this is probably fixable by adding '#include <vector>'
  +++ |+#include <vector>
    1 | 
a.cc:9:14: error: expected primary-expression before '>' token
    9 |     vector<ll> A(N);
      |              ^
a.cc:9:16: error: 'A' was not declared in this scope
    9 |     vector<ll> A(N);
      |                ^
a.cc:11:9: error: 'sort' was not declared in this scope; did you mean 'short'?
   11 |         sort(A.begin(),A.end());
      |         ^~~~
      |         short
a.cc:21:9: error: 'printf' was not declared in this scope
   21 |         printf("%lld",ans);
      |         ^~~~~~
a.cc:1:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
  +++ |+#include <cstdio>
    1 | 
a.cc:27:9: error: 'printf' was not declared in this scope
   27 |         printf("%lld",ans);
      |         ^~~~~~
a.cc:27:9: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
a.cc:35:12: error: 'abs' was not declared in this scope; did you mean 'ans'?
   35 |         if(abs(A[mcnt-1])>A[mcnt]){
      |            ^~~
      |            ans
a.cc:45:9: error: 'printf' was not declared in this scope
   45 |         printf("%lld",ans);
      |         ^~~~~~
a.cc:45:9: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'