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

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

int main(){
    int n;
    cin >> n;
    vector<int> v(n);
    int ans = 0; hozon;
    for(int i = 0; i < n; i++){
        hozon = 0;
        for(int j = 0; j < n; j++){
            if(i != j){
                hozon = v[i] + v[j];
            }
        }
        ans = max(ans, hozon);
    }
    cout << ans << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:18: error: 'hozon' was not declared in this scope
    8 |     int ans = 0; hozon;
      |                  ^~~~~
Language: C++

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <numeric>
#include <map>
#include <math.h>
#include "Lib/io.hpp"

using namespace std;

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

#define INF 		2000000007
#define MOD			998244353

#define MAX 		100005

typedef unsigned int 			uint;
typedef unsigned long long int	ull;
typedef long long int ll;


int main(){
	int N;cin>>N;
	int minl=INF,maxl=0;
	REP(i,N){
		int t;cin>>t;
		minl = min(minl,t);
		maxl = max(maxl,t);
	}

	cout << (maxl-minl) << endl;

	return 0;
}

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

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


int main(){
  	int n;
    cin >> n;
    int k[n+1];
    for(int i=0;i<n;i++)cin >> k[i];
    sort(k,k+n);
    cout<< k[n-1]-k[0] << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:5: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
   10 |     cin >> n;
      |     ^~~
      |     std::cin
In file included 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:13:5: error: 'sort' was not declared in this scope; did you mean 'std::sort'?
   13 |     sort(k,k+n);
      |     ^~~~
      |     std::sort
In file included from /usr/include/c++/14/algorithm:86,
                 from a.cc:3:
/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:14:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   14 |     cout<< k[n-1]-k[0] << endl;
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:14:27: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   14 |     cout<< k[n-1]-k[0] << endl;
      |                           ^~~~
      |                           std::endl
In file included from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include <iostream>
#include <algorithm>
#include <string>
#include <vector>
typedef long long int ll;
int main() {
	int n, k[100];
	cin >> n;
	for (int i = 0; i < n; ++i) {
		cin >> k[i];
	}
	sort(k, k + n);
	cout<<k[n-1]-k[0]<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    8 |         cin >> n;
      |         ^~~
      |         std::cin
In file included 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:12:9: error: 'sort' was not declared in this scope; did you mean 'std::sort'?
   12 |         sort(k, k + n);
      |         ^~~~
      |         std::sort
In file included from /usr/include/c++/14/algorithm:86,
                 from a.cc:2:
/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:13:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   13 |         cout<<k[n-1]-k[0]<<endl;
      |         ^~~~
      |         std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:13:28: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   13 |         cout<<k[n-1]-k[0]<<endl;
      |                            ^~~~
      |                            std::endl
In file included from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

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

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;
}
struct Unionfind {
    vector<int> par;
    vector<int> sizes;

    Unionfind(int n) : par(n), sizes(n, 1) {
        for(int i = 0; i < n; ++i) par[i] = i;
    }

    int root(int x) {
        if(par[x] == x) return x;
        return par[x] = root(par[x]);
    }

    void unite(int x, int y) {
        int rx = root(x);
        int ry = root(y);
        if(rx == ry) return;
        if(sizes[x] < sizes[y]) swap(x, y);
        par[ry] = rx;
        sizes[rx] += sizes[ry];
    }

    bool same(int x, int y) {
        int rx = root(x);
        int ry = root(y);
        return rx == ry;
    }

    int size(int x) {
        return sizes[root(x)];
    }

};

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

    int n;
    cin >> n;
    vector<ll> b(n);
    rep(i, n) {
        ll a;
        cin >> a;
        b[i] = a - (i+1);
    }

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

    long long double c = 0.0;
    if(n % 2 != 0) {
        c = b[n/2];
    }
    else {
        c = long long double(b[n/2 - 1] + b[n/2]) / 2.0;
    }

    long long double ans = 0.0;
    rep(i, n) {
        ans += abs(long long double(b[i]) - c);
    }
    cout << ans << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:70:10: error: 'long long' specified with 'double'
   70 |     long long double c = 0.0;
      |          ^~~~
a.cc:75:13: error: expected primary-expression before 'long'
   75 |         c = long long double(b[n/2 - 1] + b[n/2]) / 2.0;
      |             ^~~~
a.cc:78:10: error: 'long long' specified with 'double'
   78 |     long long double ans = 0.0;
      |          ^~~~
a.cc:80:20: error: expected primary-expression before 'long'
   80 |         ans += abs(long long double(b[i]) - c);
      |                    ^~~~
Language: C++

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

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;
}
struct Unionfind {
    vector<int> par;
    vector<int> sizes;

    Unionfind(int n) : par(n), sizes(n, 1) {
        for(int i = 0; i < n; ++i) par[i] = i;
    }

    int root(int x) {
        if(par[x] == x) return x;
        return par[x] = root(par[x]);
    }

    void unite(int x, int y) {
        int rx = root(x);
        int ry = root(y);
        if(rx == ry) return;
        if(sizes[x] < sizes[y]) swap(x, y);
        par[ry] = rx;
        sizes[rx] += sizes[ry];
    }

    bool same(int x, int y) {
        int rx = root(x);
        int ry = root(y);
        return rx == ry;
    }

    int size(int x) {
        return sizes[root(x)];
    }

};

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

    int n;
    cin >> n;
    vector<ll> b(n);
    rep(i, n) {
        ll a;
        cin >> a;
        b[i] = a - (i+1);
    }

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

    ll double c = 0.0;
    if(n % 2 != 0) {
        c = b[n/2];
    }
    else {
        c = ll double(b[n/2 - 1] + b[n/2]) / 2.0;
    }

    ll double ans = 0.0;
    rep(i, n) {
        ans += abs(ll double(b[i]) - c);
    }
    cout << ans << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:70:5: error: two or more data types in declaration of 'c'
   70 |     ll double c = 0.0;
      |     ^~
a.cc:72:9: error: 'c' was not declared in this scope
   72 |         c = b[n/2];
      |         ^
a.cc:75:9: error: 'c' was not declared in this scope
   75 |         c = ll double(b[n/2 - 1] + b[n/2]) / 2.0;
      |         ^
a.cc:75:16: error: expected primary-expression before 'double'
   75 |         c = ll double(b[n/2 - 1] + b[n/2]) / 2.0;
      |                ^~~~~~
a.cc:78:5: error: two or more data types in declaration of 'ans'
   78 |     ll double ans = 0.0;
      |     ^~
a.cc:80:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   80 |         ans += abs(ll double(b[i]) - c);
      |         ^~~
      |         abs
a.cc:80:23: error: expected primary-expression before 'double'
   80 |         ans += abs(ll double(b[i]) - c);
      |                       ^~~~~~
a.cc:82:13: error: 'ans' was not declared in this scope; did you mean 'abs'?
   82 |     cout << ans << endl;
      |             ^~~
      |             abs
Language: C++

#pragma region header
#include <algorithm>
#include <bitset>
#include <tuple>
#include <cstdint>
#include <cctype>
#include <assert.h>
#include <time.h>
#include <stdlib.h>
#include <stdio.h>
#include <cassert>
#include <cfloat>
#include <climits>
#include <cmath>
#include <complex>
#include <ctime>
#include <deque>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <iterator>
#include <limits>
#include <map>
#include <memory>
#include <queue>
#include <random>
#include <set>
#include <stack>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
#include <math.h>
#include <cstring>
#include <array>
// ===============================================================
//using系
#pragma region header
using namespace std;
using lint = long long;
using ld = long double;
using ulint = unsigned long long;
const int dx[] = { 1,0,-1,0 };
const int dy[] = { 0,1,0,-1 };
constexpr lint mod = 1000000007;
constexpr long double pi = 3.141592653589793238462643383279;
#pragma endregion
// ========================================================================
//define
#define INF (lint)10000000000000000;
#define mod (int)1000000007
#pragma region header
template <class T, class U>
inline bool chmin(T& lhs, const U& rhs) {
	if (lhs > rhs) {
		lhs = rhs;
		return 1;
	}
	return 0;
}
template <class T, class U>
inline bool chmax(T& lhs, const U& rhs) {
	if (lhs < rhs) {
		lhs = rhs;
		return 1;
	}
	return 0;
}
#pragma endregion
#pragma endregion
 
 
 
int main(void) {
	ios::sync_with_stdio(false);
	cin.tie(0);
	int n; cin >> n;
	vector<lint> d(n);
	for (int i = 0; i < n; i++) {
		lint a; cin >> a;
		d[i] = a - (i + 1);
	}
	sort(d.begin(), d.end());
	lint cnt = d[n / 2];
	lint ans = 0;
	for (int i = 0; i < n; i++) {
		ans += abs(d[i] - cnt);
	}
	cout << ans << endl;
 
	return 0;

Compiler output:
a.cc: In function 'int main()':
a.cc:92:18: error: expected '}' at end of input
   92 |         return 0;
      |                  ^
a.cc:75:16: note: to match this '{'
   75 | int main(void) {
      |                ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, c) for (int i = 0; i < (int)c; i++)
using ll = long long;
int main() {
    int n;
    scanf("%d", &n);

    // |A1−(x+1)|+|A2−(x+1)|+⋯+|AN−(x+N)|をBi=Ai−i として式変形してくと|x−B1|+|x−B2|+⋯+|x−BN|になる
    vector<ll> a(n), b(n);
    rep(i, n) scanf("%lld", &a[i]), b[i] = a[i] - i;

    // |x-a|+|x-b|+|x-c|+...を最小にする x は、a,b,cが小さい順になっていたらその中央値
    sort(b.begin(), b.end());
    ll x = b[n / 2];

    ll res = 0;
    rep(i, n) res += max(x - B[i], -x + B[i]);  // |A| = max(A, -A)
    printf("%lld\n", res);
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:30: error: 'B' was not declared in this scope
   18 |     rep(i, n) res += max(x - B[i], -x + B[i]);  // |A| = max(A, -A)
      |                              ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, c) for (int i = 0; i < (int)c; i++)
using ll = long long;
int main() {
    int n;
    scanf("%d", &n);

    // |A1−(x+1)|+|A2−(x+1)|+⋯+|AN−(x+N)|をBi=Ai−i として式変形してくと|x−B1|+|x−B2|+⋯+|x−BN|になる
    vector<ll> a(n), b(n);
    rep(i, n) scanf("%d", &a[i]), b[i] = a[i] - i;

    // |x-a|+|x-b|+|x-c|+...を最小にする x は、a,b,cが小さい順になっていたらその中央値
    sort(b.begin(), b.end());
    ll x = b[n / 2];

    ll res = 0;
    rep(i, n) res += max(x - B[i], -x + B[i]);  // |A| = max(A, -A)
    printf("%lld\n", res);
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:30: error: 'B' was not declared in this scope
   18 |     rep(i, n) res += max(x - B[i], -x + B[i]);  // |A| = max(A, -A)
      |                              ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0; i<n; i++)
#define cans cout << ans << endl
#define cyes cout << "Yes" << endl
#define cno cout << "No" << endl
typedef long long ll;


int main(){
    int n;
    cin >> n;
    vector<int> a(n+1);
    for(int i=1; i<=n; i++) {
        int t;
        cin >> t;
        a[i] = t-i;
    }
    ll ans = 0;
    if(n%2){
        for(int i=1; i<=n; i++){
            ans += abs(a[i]-a[n/2+1])
        }
    }
    else{
        for(int i=1; i<=n; i++){
            ans += abs(a[i]-a[n/2])
        }
    }
    cout << ans << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:38: error: expected ';' before '}' token
   22 |             ans += abs(a[i]-a[n/2+1])
      |                                      ^
      |                                      ;
   23 |         }
      |         ~                             
a.cc:27:36: error: expected ';' before '}' token
   27 |             ans += abs(a[i]-a[n/2])
      |                                    ^
      |                                    ;
   28 |         }
      |         ~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0; i<n; i++)
#define cans cout << ans << endl
#define cyes cout << "Yes" << endl
#define cno cout << "No" << endl
typedef long long ll;


int main(){
    int n;
    cin >> n;
    vector<int> a(n+1);
    for(int i=1; i<=n; i++) {
        int t;
        cin >> t;
        a[i] = t-i;
    }
    if(n%2){
        ans = a[n/2+1];
    }
    else{
        ans = a[n/2];
    }
    cout << ans << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   20 |         ans = a[n/2+1];
      |         ^~~
      |         abs
a.cc:23:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   23 |         ans = a[n/2];
      |         ^~~
      |         abs
a.cc:25:13: error: 'ans' was not declared in this scope; did you mean 'abs'?
   25 |     cout << ans << endl;
      |             ^~~
      |             abs
Language: C++

#include<iostream>
#include <map>
using namespace std;
int main(){
  int N, A[200000], B[200000], b, ans=0;
  map<int, int> mp;
  cin >> N;
  for(int i=0; i<N; i++){
    cin >> A[i];
    B[i] = A[i]-i-1;
  }

  sort(B, B+N);
  if(N%2==0) b = (B[N/2-1] + B[N/2])/2;
  else b = B[N/2];
  for(int i=0; i<N; i++){
    ans += abs(B[i]-b);
  }
  cout << ans << "\n";
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:3: error: 'sort' was not declared in this scope; did you mean 'short'?
   13 |   sort(B, B+N);
      |   ^~~~
      |   short
Language: C++

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

int main(){
  
  int N;
  cin >> N;
  
  vector<long long> v(N);
  
  for(int i = 0; i < N; i++){
    long long x;
    cin >> x;
    v[i] = x;
  }
  
  long long tmp = v[N - 1];
  long long lastInd = N - 1;
  long long b = tmp - lastInd;
  
  long long sum = 0;
  for(int i = 0; i < N; i++){
    sum += abs(v[i] - (b + i);
               }
               cout << sum;
               }
  

Compiler output:
a.cc: In function 'int main()':
a.cc:23:30: error: expected ')' before ';' token
   23 |     sum += abs(v[i] - (b + i);
      |               ~              ^
      |                              )
Language: Java



import java.util.Arrays;
import java.util.Scanner;

/*
絶対値の和の最小
|x−B1|+|x−B2|+⋯+|x−BN| を最小にする x は、B1,B2,…,BN のメディアン *式変形
 */
public class  {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int[] a = new int[(int)N];
        int[] b = new int[(int)N];
        for(int i = 0; i < N; i++) {
            a[i] = sc.nextInt();
            b[i] = a[i] - i;
        }
        Arrays.sort(b);
        int mid = b[N/2];
        long min = 0;
        for(int i = 0; i < N; i++) {
            min += Math.abs(mid - b[i]);
        }
        System.out.println(min);

    }
}


Compiler output:
Main.java:10: error: <identifier> expected
public class  {
            ^
1 error
Language: C++

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

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

	ll n;
	cin >> n;
	vector<ll> v(n);
	for(ll i=0; i<n; i++){
		cin >> v[i];
		v[i] -= (i+1);
	}
	sort(v.begin(), v.end());
	ll minima = v[n/2]; ll ans = 0;
	for(auto x:v){
		ans += abs(x-minima);
	}
	cout << ans;
	return 0;
}

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

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

int main() {
  int N, a;
  cin >> N;
  vector<int> A(N);
  for (int i = 0; cin >> a; i++) A.at(i) = a - i - 1;
  sort(A.begin(), A.end());
  long m = A.at(N / 2), ans = 0;
  for (auto a : A) ans += bas(a - m);
  cout << ans << "\n";
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:27: error: 'bas' was not declared in this scope; did you mean 'abs'?
   11 |   for (auto a : A) ans += bas(a - m);
      |                           ^~~
      |                           abs
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
    long long int n;
    cin >> n;
    long long int a[n];
    long long int sum=0;
    for(long long int i=0;i<n;i++){
        cin >> a[i];
        a[i] -= i+1;
        sum += a[i];
    }
    sort(a,a+n);
    long long int tmp=0;
    long long int ans=1e18;
    for(long long int i=0;i<n;i++){
        tmp += a[i];
        ans=min(ans,sum+(n-2*(i+1))*a[i]-2*tmp));
    }
    cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:48: error: expected ';' before ')' token
   18 |         ans=min(ans,sum+(n-2*(i+1))*a[i]-2*tmp));
      |                                                ^
      |                                                ;
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);
  }
  
  int sum = 0;
  sort(a.begin(), a.end());
  
  if(n%2 == 0){
    int b == (a.at(n/2) + a.at(n/2 + 1))/2;
    for(int i = 0; i < n; i++){
      sum += abs(a.at(i) - i - b);
    }
  }else{
    int b == a.at((n + 1)/2);
    for(int i = 0; i < n; i++){
      sum += abs(a.at(i) - i - b);
    }
  }
  cout << sum << endl;
}
    


Compiler output:
a.cc: In function 'int main()':
a.cc:17:11: error: expected initializer before '==' token
   17 |     int b == (a.at(n/2) + a.at(n/2 + 1))/2;
      |           ^~
a.cc:19:32: error: 'b' was not declared in this scope
   19 |       sum += abs(a.at(i) - i - b);
      |                                ^
a.cc:22:11: error: expected initializer before '==' token
   22 |     int b == a.at((n + 1)/2);
      |           ^~
a.cc:24:32: error: 'b' was not declared in this scope
   24 |       sum += abs(a.at(i) - i - b);
      |                                ^
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);
  }
  
  int sum = 0;
  sort(a.begin(), a.end());
  
  if(n%2 == 0){
    b == (a.at(n/2) + a.at(n/2 + 1))/2;
    for(int i = 0; i < n; i++){
      sum += abs(a.at(i) - i - b);
    }
  }else{
    b == a.at((n + 1)/2);
    for(int i = 0; i < n; i++){
      sum += abs(a.at(i) - i - b);
    }
  }
  cout << ans << endl;
}
    

Compiler output:
a.cc: In function 'int main()':
a.cc:17:5: error: 'b' was not declared in this scope
   17 |     b == (a.at(n/2) + a.at(n/2 + 1))/2;
      |     ^
a.cc:22:5: error: 'b' was not declared in this scope
   22 |     b == a.at((n + 1)/2);
      |     ^
a.cc:27:11: error: 'ans' was not declared in this scope; did you mean 'abs'?
   27 |   cout << ans << endl;
      |           ^~~
      |           abs
Language: C++

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

int abs(int x){
  if(x >= o){
    return x;
  }else{
    return -x;
  }
}

int main(){
  int n;
  cin >> n;
  vector<int> a(n);
  int sum = 0;
  int ans = 0;
  for(int i = 0; i < n; i++){
    cin >> a.at(i);
    sum += a.at(i);
  }
  int b = sum/n;
  for(int i = 0; i < n; i++){
    ans += abs(a.at(i) - (b + i))
  }
  cout << ans << endl;
}
    
    

Compiler output:
a.cc: In function 'int abs(int)':
a.cc:5:11: error: 'o' was not declared in this scope
    5 |   if(x >= o){
      |           ^
a.cc: In function 'int main()':
a.cc:24:34: error: expected ';' before '}' token
   24 |     ans += abs(a.at(i) - (b + i))
      |                                  ^
      |                                  ;
   25 |   }
      |   ~                               
a.cc: In function 'int abs(int)':
a.cc:10:1: warning: control reaches end of non-void function [-Wreturn-type]
   10 | }
      | ^
Language: C++

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

int main()
{
    int N, n, b, ans(0),min(1000000000),ans1(0),ans2(0),b1,b2;
    double num;
    vector<int> v;
    cin >> N;
    for (int i = 0; i < N; i++){
        cin >> n;
        v.push_back(n - i - 1);
    }
    sort(v.begin(), v.end());
    if(N%2==1){
        b=v[(N-1)/2];
        min=0;
        for (int i = 0; i < N; i++){
            min += abs(v[i] - b);
        }
    }else{
        b1=v[N/2-1];
        b2=v[N/2];
        for (int i = 0; i < N; i++){
                ans1 += abs(v[i] - b1);
                ans2 += abs(v[i]-b2);
        }
            if(b2>b1){
                min=ans1;
            }else{
                min=ans2;
            }
        }
    }
    cout << min;
}

Compiler output:
a.cc:38:5: error: 'cout' does not name a type
   38 |     cout << min;
      |     ^~~~
a.cc:39:1: error: expected declaration before '}' token
   39 | }
      | ^
Language: C++

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

int main()
{
    int N, n, b, ans(0),min(1000000000),ans1(0),ans2(0),b1,b2;
    double num;
    vector<int> v;
    cin >> N;
    for (int i = 0; i < N; i++){
        cin >> n;
        v.push_back(n - i - 1);
    }
    sort(v.begin(), v.end());
    if(N%2==1){
        b=v[(N-1)/2];
        min=0;
        for (int i = 0; i < N; i++){
            min += abs(v[i] - b);
        }
    }else{
        b1=v[N/2-1];
        b2=v[N/2];
        for (int i = 0; i < N; i++){
                ans1 += abs(v[i] - b1);
                ans2 += abs(v[i]-b2);
            }
            if(b2>b1){
                min=b1;
            }else{
                min=b2;
            }
        }
    }
    cout << min;
}

Compiler output:
a.cc:38:5: error: 'cout' does not name a type
   38 |     cout << min;
      |     ^~~~
a.cc:39:1: error: expected declaration before '}' token
   39 | }
      | ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int N;cin>>N;
  vector<long long>A(N);
  long long sum=0;
  for(int i=0;i<N;i++){
    cin>>A.at(i);
    A.at(i)=A.at(i)-(i+1);
  }
  sort(A.begin(),A.end());
  long long b=0;
  if(N%2==1){
    b=A.at(N/2-1);
  }
  else{
    b=(A.at(N/2)+A.at(N/2-1))/2;
  }
  long long sum=0;
  for(int i=0;i<N;i++){
    sum=sum+abs(A.at(i)-b);
  }
  cout<<sum<<endl;
}
    
  
  
  


Compiler output:
a.cc: In function 'int main()':
a.cc:19:13: error: redeclaration of 'long long int sum'
   19 |   long long sum=0;
      |             ^~~
a.cc:6:13: note: 'long long int sum' previously declared here
    6 |   long long sum=0;
      |             ^~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int N;cin>>N;
  vector<long long>A(N);
  long long sum=0;
  for(int i=0;i<N;i++){
    cin>>A.at(i);
    A.at(i)=A.at(i)-(i+1);
  }
  sort(A.begin(),A.end());
  if(N%2==1){
    long long b=A.at(N/2-1);
  }
  else{
    long long b=(A.at(N/2)+A.at(N/2-1))/2;
  }
  long long sum=0;
  for(int i=0;i<N;i++){
    sum=sum+abs(A.at(i)-b);
  }
  cout<<sum<<endl;
}
    
  
  
  


Compiler output:
a.cc: In function 'int main()':
a.cc:18:13: error: redeclaration of 'long long int sum'
   18 |   long long sum=0;
      |             ^~~
a.cc:6:13: note: 'long long int sum' previously declared here
    6 |   long long sum=0;
      |             ^~~
a.cc:20:25: error: 'b' was not declared in this scope
   20 |     sum=sum+abs(A.at(i)-b);
      |                         ^
Language: C++

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

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

ll lcm(ll a, ll b)
{
   return a * b / gcd(a, b);
}
int main() {
  int N;
  cin >> N;
  vector<int> a(N);

  for(int i = 0; i < N; i++) cin >> a[i];
  
  sort(A.begin(), A.end());
  
  int b = A[N / 2];
  int sum = 0;
  for(int i = 0; i < N; i++) {
    sum += abs(b + (i + 1) - A[i]);
  }

  cout << sum;


    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:28:8: error: 'A' was not declared in this scope
   28 |   sort(A.begin(), A.end());
      |        ^
Language: C++

#include<bits.stdc++.h>
using namespace std;
int main(){
int64_t N;
  cin>>N;
  vector<int64_t>A(N);
  for(int64_t i=1;i<N;i++){
  int64_t a;
    cin>>a;
    a-=i;
    A.at(i)=a;
  
  }sort(A.begin(),A.end());
  int64_t b=A.at(N/2);
  int64_t ans=0;
  for(int64_t i=0;i<N;i++){
  ans+=abs(A.at(i)-b);
  
  }cout<<ans<<endl;

   return 0;
}

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

#include "C:/Users/yukiy/Desktop/jhelper-example-project-master/tasks/CLinearApproximation.cpp"

#include <cctype>
#include <ctime>
#include <fstream>
#include <iostream>
#include <sstream>
#include <string>
#include <vector>

namespace jhelper {

struct Test {
  std::string input;
  std::string output;
  bool active;
  bool has_output;
};

bool check(std::string expected, std::string actual) {
  while (!expected.empty() && isspace(*--expected.end()))
    expected.erase(--expected.end());
  while (!actual.empty() && isspace(*--actual.end()))
    actual.erase(--actual.end());
  return expected == actual;
}

} // namespace jhelper

signed main() {
  std::vector<jhelper::Test> tests = { {"5\n2 2 3 5 5\n", "2\n", true, true},{"9\n1 2 3 4 5 6 7 8 9\n", "0\n", true, true},{"6\n6 5 4 3 2 1\n", "18\n", true, true},{"7\n1 1 1 1 2 3 4\n", "6\n", true, true}, };
  bool allOK = true;
  int testID = 0;
  std::cout << std::fixed;
  double maxTime = 0.0;
  for (const jhelper::Test &test : tests) {
    std::cout << "Test #" << ++testID << std::endl;
    std::cout << "Input: \n" << test.input << std::endl;
    if (test.has_output) {
      std::cout << "Expected output: \n" << test.output << std::endl;
    } else {
      std::cout << "Expected output: \n"
                << "N/A" << std::endl;
    }
    if (test.active) {
      std::stringstream in(test.input);
      std::ostringstream out;
      std::clock_t start = std::clock();
      CLinearApproximation solver;
      solver.solve(in, out); std::clock_t finish = std::clock();
      double currentTime = double(finish - start) / CLOCKS_PER_SEC;
      maxTime = std::max(currentTime, maxTime);
      std::cout << "Actual output: \n" << out.str() << std::endl;
      if (test.has_output) {
        bool result = jhelper::check(test.output, out.str());
        allOK = allOK && result;
        std::cout << "Result: " << (result ? "OK" : "Wrong answer")
                  << std::endl;
      }
      std::cout << "Time: " << currentTime << std::endl;
    } else {
      std::cout << "SKIPPED\n";
    }

    std::cout << std::endl;
  }
  if (allOK) {
    std::cout << "All OK" << std::endl;
  } else {
    std::cout << "Some cases failed" << std::endl;
  }
  std::cout << "Maximal time: " << maxTime << "s." << std::endl;
  return 0;
}


Compiler output:
a.cc:1:10: fatal error: C:/Users/yukiy/Desktop/jhelper-example-project-master/tasks/CLinearApproximation.cpp: No such file or directory
    1 | #include "C:/Users/yukiy/Desktop/jhelper-example-project-master/tasks/CLinearApproximation.cpp"
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>

#define rep(i, n) for(int i=0; i < n; i++)
#define REP(i, n, m) for(int i=n; i < m; i++)
#define reps(i, n) for(int i=1; i <= n; i++)
#define ALL(v) v.begin(), v.end()
#define rALL(v) v.rbegin(), v.rend()
#define pb(x) push_back(x)
#define mp(x,y) make_pair(x,y)

using namespace std;
using ll=long long;

ll mod=1000000007;

const ll INF = 1LL << 60;

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;}

int n;

ll getsad(ll x,vector<ll> y){
  ll sad=0;
  rep(i,y.size()){
    sad+=(ll)abs(y[i]-x);
  }
  return sad;
}

int main() {
  cin >> n;
  ll sum=0;
  vector<ll> a(n);
  rep(i,n){
    cin >> a[i];
    a[i]-=(i+1);sum+=a[i];
  }
  sort(ALL(a));
  ll center=a[n/2];
  cout << getsad(center,a);
}s

Compiler output:
a.cc:42:2: error: 's' does not name a type
   42 | }s
      |  ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for (int i = 0; i < (int)(n); ++i)
int main(){
  ll n,b=0,ans0=0,ans1=0,ans2=0;
  cin>>n;
  ll a[n];
  rep(i,n){
     cin>>a[i];
     a[i]-=i+1;
     b+=a[i]; 
  }
  ll c=b/n;
  rep(i,n){
     ans0+=abs(a[i]-c+1);
     ans1+=abs(a[i]-c);
     ans2+=abs(a[i]-c-1);
  }
  cout<<min({ans0,ans1,ans2});
  return 0;


Compiler output:
a.cc: In function 'int main()':
a.cc:21:12: error: expected '}' at end of input
   21 |   return 0;
      |            ^
a.cc:5:11: note: to match this '{'
    5 | int main(){
      |           ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
 
int main()
{
    int n,i,j;cin>>n;int a[n+1];
    for(i=1;i<=n;i++) cin>>a[i];
    for(i=1;i<n+1;i++)  a[i]-=i;
    int s=0,m1,m2,m3;
    for(i=1;i<=n;i++)   s+=a[i];
    m1=s/n;m2=m1+1;m3=m1-1;
    int s1=0,s2=0,s3=0;
    for(i=1;i<=n;i++)
    {
        s1+=abs(a[i]-m1);
        s2+=abs(a[i]-m2);
        s3+=abs(a[i]-m3);
    }
    ll res=min(s1,s2);
    res=min(res,s3);
    cout<<res;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:21:12: error: no matching function for call to 'min(ll&, int&)'
   21 |     res=min(res,s3);
      |         ~~~^~~~~~~~
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:21:12: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   21 |     res=min(res,s3);
      |         ~~~^~~~~~~~
/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:21:12: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   21 |     res=min(res,s3);
      |         ~~~^~~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
 
int main()
{
    int n,i,j;cin>>n;int a[n+1];
    for(i=1;i<=n;i++) cin>>a[i];
    for(i=1;i<n+1;i++)  a[i]-=i;
    int s=0,m1,m2,m3;
    for(i=1;i<=n;i++)   s+=a[i];
    m1=s/n;m2=m1+1;m3=m1-1;
    ll s1=0,s2=0,s3=0;
    for(i=1;i<=n;i++)
    {
        s1+=abs(a[i]-m1);
        s2+=abs(a[i]-m2);
        s3+=abs(a[i]-m3);
    }
    int res=min(s1,s2);
    res=min(res,s3);
    cout<<res;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:21:12: error: no matching function for call to 'min(int&, ll&)'
   21 |     res=min(res,s3);
      |         ~~~^~~~~~~~
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:21:12: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'll' {aka 'long long int'})
   21 |     res=min(res,s3);
      |         ~~~^~~~~~~~
/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:21:12: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   21 |     res=min(res,s3);
      |         ~~~^~~~~~~~
Language: C++

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

int evaluation(int N, int b, int A[])
{

  int acc = 0;
  for (int i = 0; i < N; i++)
  {
    acc += abs((A[i] - (i + 1)) - b);
  }

  return acc;
}

bool compare(int i, int j)
{
  return i < j;
}

int main()
{

  int N;

  cin >> N;

  int A[N];
  vector<int> B;

  for (int i = 0; i < N; i++)
  {
    cin >> A[i];
    B.push_back(A[i] - (i + 1));
  }
  sort(B.begin(), B.end(), compare);

  int mid = N / 2;
  int b = B[mid];

  cout << evaluation(N, b, A);

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:37:3: error: 'sort' was not declared in this scope; did you mean 'short'?
   37 |   sort(B.begin(), B.end(), compare);
      |   ^~~~
      |   short
Language: C++

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

int evaluation(int N, int b, int A[])
{

  int acc = 0;
  for (int i = 0; i < N; i++)
  {
    acc += abs((A[i] - (i + 1)) - b);
  }

  return acc;
}

int main()
{

  int N;

  cin >> N;

  int A[N];
  vector<int> B;

  for (int i = 0; i < N; i++)
  {
    cin >> A[i];
    B.push_back(A[i] - (i + 1));
  }
  sort(B.begin(), B.end());

  int mid = N / 2;
  int b = B[mid];

  cout << evaluation(N, b, A);

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:32:3: error: 'sort' was not declared in this scope; did you mean 'short'?
   32 |   sort(B.begin(), B.end());
      |   ^~~~
      |   short
Language: C++

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

int main(){
    int n;
    cin >> n;
    int a[210000];
    for(int i=0; i<n; i++){
        cin >> a[i];
        a[i] -= (i+1);
    }
    sort(a, a + n);
    int ans = 0;
    for(int i=0; i<n; i++){
        ans += abs(a[i] - a[floor(n/2.0)]);
    }
    cout << ans << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:28: error: invalid types 'int [210000][double]' for array subscript
   15 |         ans += abs(a[i] - a[floor(n/2.0)]);
      |                            ^
Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
typedef long long ll;


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

    double mean = 0.;
    for(int i=0; i<N; ++i) {
        // cout << mean << endl;
        mean += double(A[i] - (i+1)) / double(N);
    }
    
    ll b = floor(mean);

    // cout << mean << " " << b << endl;

    ll ans=0;
    for(int i=0; i<N; ++i) {
        ans += abs(A[i] - (i+1) - b);
    }
    cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:12: error: 'floor' was not declared in this scope
   22 |     ll b = floor(mean);
      |            ^~~~~
Language: C++

#include <iostream>
#include <math.h>
#include <stdio.h>
#include <algorithm>
#define rep(i,n) for(int i = 0; i < n;i++)
#define ll long long
#include <bits/stdc++.h>
using namespace std;
#define mo 1000000007
#define ull unsigned long long 
int main(){ 
  ll n;cin>>n;
  vector<ll>p(n);
  for(ll i=0;i<n;i++)
  {
    ll a;cin>>a;
    p.push_back(a-i-1);
  }
  sort(p.begin(),p.end());
  ll d=n/2;
  ll ans=0;
  for(ll i=0;i<n;i++)
  {
    ans+=abs(p.at(i)-p(d));
  }
  cout<<ans;
}
    


Compiler output:
a.cc: In function 'int main()':
a.cc:24:23: error: no match for call to '(std::vector<long long int>) (long long int&)'
   24 |     ans+=abs(p.at(i)-p(d));
      |                      ~^~~
Language: C++

#include <iostream>
#include <math.h>
#include <stdio.h>
#include <algorithm>
#define rep(i,n) for(int i = 0; i < n;i++)
#define ll long long
#include <bits/stdc++.h>
using namespace std;
#define mo 1000000007
#define ull unsigned long long 
int main(){ 
  ll n;cin>>n;
  vector<ll>p(n);
  for(int i=0;i<n;i++)
  {
    ll a;cin>>a;
    p.push_back(a-i-1);
  }
  sort(p.begin(),p.end());
  ll d=n/2;
  ll ans=0;
  for(int i=0;i<n;i++)
  {
    ans+=abs(p.at(i)-p(d));
  }
  cout<<ans;
}
    


Compiler output:
a.cc: In function 'int main()':
a.cc:24:23: error: no match for call to '(std::vector<long long int>) (long long int&)'
   24 |     ans+=abs(p.at(i)-p(d));
      |                      ~^~~
Language: C++

#include <iostream>

using namespace std;

int main(){
    int N;
    cin >> N;
    int A[N];
    for(int i=0; i<N; i++){
        cin >> A[i];
        A[i] -= i+1;
    }
    sort(A, A+N);
    int mid = A[N/2];
    long ans = 0;
    for(int i=0; i<N; i++){
        ans += abs(A[i] - mid);
    }
    cout << ans << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   13 |     sort(A, A+N);
      |     ^~~~
      |     short
Language: C++

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

#define int long long
#define pii pair<int,int>
signed main(){
  int n,ans;
  cin >> n;

  vector<int> a;
  for(auto &i:a)cin >> i;

  sort(v.begin(), v.end());
    if(n%2){
        ans = v[n/2];
    }
    else ans = (v[n/2]+v[n/2+1])/2;

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


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

#include<iostream>
#include <algorithm>
#include <cstdlib>
#include <cmath>

using namespace std;


int median(int arr[], int size)
{
	if (size%2 == 0)
		return (arr[size/2 - 1] + arr[size/2])/ 2;
	else
		return arr[size/2];
}

int main()
{
	int N;
	long long int b, sadness;

	cin>>N;
	
	long long int arr[N]; 
	long long int B[N];
	
	for(int i = 0; i < N; i++)
	{
		cin >> arr[i];
		B[i] = arr[i]- i - 1;
	}

	sort(B, B + N);

	b = median(B, N);

	sadness = 0;
	for(int j = 0; j < N; j++)
	{
		sadness += abs(B[j] - b);
	}
	cout << sadness << "\n";

	return 0;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:35:20: error: cannot convert 'long long int*' to 'int*'
   35 |         b = median(B, N);
      |                    ^
      |                    |
      |                    long long int*
a.cc:9:16: note:   initializing argument 1 of 'int median(int*, int)'
    9 | int median(int arr[], int size)
      |            ~~~~^~~~~
Language: C++

#include<iostream>
#include<algorithm>
#include<iomanip>
using namespace std;
int main(){
	int n;
  cin >> n;
  long long int A[n];
  // reading into array
  for (int i= 0; i < n; i++)
  {
    cin >> A[i];
    A[i] -= i+1;
  }
  // sorting the array to find median
  sort(A,A+n);
  // finding median
  
  // 
  if(n % 2 == 0) {
    long int median;
    median = (A[n/2-1] + A[n/2])/2;
  //cout << median <<'\n';
  long long int res =0;
  for (int i= 0; i < n; i++)
  {
    (A[i]-median > 0)? res += A[i]-median : res += median-A[i];
  } 
    cout << res <<'\n';
  }
  else{
   long long int median,res = 0;
   median = A[n/2];
   median1 = A[n/2]
   for (int i = 0; i < n; i++)
     res += abs(A[i]-median);
   cout << res <<'\n';
  }

  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:34:4: error: 'median1' was not declared in this scope; did you mean 'median'?
   34 |    median1 = A[n/2]
      |    ^~~~~~~
      |    median
a.cc:35:20: error: 'i' was not declared in this scope
   35 |    for (int i = 0; i < n; i++)
      |                    ^
Language: C++

#include<iostream>
#include<algorithm>
#include<iomanip>
using namespace std;
int main(){
	int n;
  cin >> n;
  long int A[n];
  // reading into array
  for (int i= 0; i < n; i++)
  {
    cin >> A[i];
    A[i] -= i+1;
  }
  // sorting the array to find median
  sort(A,A+n);
  // finding median
  
  // 
  if(n % 2 == 0) {
    float median;
    median = (A[n/2-1] + A[n/2])/2;
  //cout << median <<'\n';
  float res =0;
  for (int i= 0; i < n; i++)
  {
    (A[i]-median > 0)? res += A[i]-median : res += median-A[i];
    //cout << res << " ";
  }  
  }
  else{
   long int median,res = 0;
   median = A[n/2];
   for (int i = 0; i < n; i++)
     res += abs(A[i]-median);
  }
  //cout <<'\n';
  cout << res <<'\n';
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:38:11: error: 'res' was not declared in this scope
   38 |   cout << res <<'\n';
      |           ^~~
Language: C++

#include<iostream>
#include<algorithm>
using namespace std;
int main(){
	int n;
  cin >> n;
  long int A[n];
  // reading into array
  for (int i= 0; i < n; i++)
  {
    cin >> A[i];
    A[i] -= i+1;
  }
  // sorting the array to find median
  sort(A,A+n);
  // finding median
  float median;
  // 
  (n % 2 == 0)? median = (A[n/2-1] + A[n/2])/2 : A[n/2];
  float res =0;
  for (int i= 0; i < n; i++)
  {
    (A[i]-median > 0)? res += A[i]-median : res += median-A[i];
  }  
  cout << long int(res) <<'\n';
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:25:11: error: expected primary-expression before 'long'
   25 |   cout << long int(res) <<'\n';
      |           ^~~~
Language: C++

#include<iostream>
#include<algorithm>
using namespace std;
int main(){
	int n;
  cin >> n;
  long int A[n];
  // reading into array
  for (int i= 0; i < n; i++)
  {
    cin >> A[i];
    A[i] -= i+1;
  }
  // sorting the array to find median
  sort(A,A+n);
  // finding median
  long float median;
  // 
  (n % 2 == 0)? median = (A[n/2-1] + A[n/2])/2 : A[n/2];
  long float res =0;
  for (int i= 0; i < n; i++)
  {
    res += abs(A[i]-median);
  }  
  cout << res <<'\n';
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:3: error: 'long' specified with 'float'
   17 |   long float median;
      |   ^~~~
a.cc:20:3: error: 'long' specified with 'float'
   20 |   long float res =0;
      |   ^~~~
Language: C++

#include<iostream>
//#include<>
using namespace std;
int main(){
	int n;
  cin >> n;
  long int A[n];
  // reading into array
  for (int i= 0; i < n; i++)
  {
    cin >> A[i];
    A[i] -= i+1;
  }
  // sorting the array to find median
  sort(A,A+n);
  // finding median
  long int median;
  // 
  (n % 2 == 0)? median = (A[n/2-1] + A[n/2])/2 : A[n/2];
  long int res =0;
  for (int i= 0; i < n; i++)
  {
    res += abs(A[i]-median);
  }  
  cout << res <<'\n';
  return 0;
}

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

#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <limits.h>
#include <math.h>
int acs(const void *a, const void *b){return *(int*)a - *(int*)b;} /* 1,2,3,4.. */
int des(const void *a, const void *b){return *(int*)b - *(int*)a;} /* 8,7,6,5.. */
int cmp_char(const void *a, const void *b){return *(char*)a - *(char*)b;} /* a,b,c,d.. */
int cmp_str(const void *a, const void *b){return strcmp(*(const char **)a, *(const char **)b);} /* aaa,aab.. */
#define min(a,b) (a < b ? a: b)
#define max(a,b) (a > b ? a: b)
#define rep(i, l, r) for (int i = l; i < r; i++)
#define MAX 200001
#define MOD 1000000007

typedef long long int lli;

int main(void) {
  int N;
  scanf("%d", &N);
  int A[MAX];
  rep(i, 0, N) scanf("%d", &A[i]);

  int sum = 0;
  rep(i, 0, N) {
    sum += A[i] - (i + 1);
  } 
  double b1 = (double)sum / (double)N;
  double d2;
  if ( b1 > 0 ) b2 = b1 + 1;
  else if ( b1 < 0 ) b2 = b1 - 1;
  else b2 = b1;

  int ans1 = 0, ans2 = 0;
  rep(i, 0, N) {
    ans1 += abs(A[i]- ((int)b1 + i + 1));
    ans2 += abs(A[i]- ((int)b2 + i + 1));
  }
  printf("%d\n", min(ans1, ans2));
  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:32:17: error: 'b2' undeclared (first use in this function); did you mean 'd2'?
   32 |   if ( b1 > 0 ) b2 = b1 + 1;
      |                 ^~
      |                 d2
main.c:32:17: note: each undeclared identifier is reported only once for each function it appears in