criyle/codenet-compile-errors huggingface dataset:
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;
  if ( b1 > 0 ) double b2 = b1 + 1;
  else if ( b1 < 0 ) double b2 = b1 - 1;

  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:31:17: error: expected expression before 'double'
   31 |   if ( b1 > 0 ) double b2 = b1 + 1;
      |                 ^~~~~~
main.c:32:22: error: expected expression before 'double'
   32 |   else if ( b1 < 0 ) double b2 = b1 - 1;
      |                      ^~~~~~
main.c:37:29: error: 'b2' undeclared (first use in this function); did you mean 'b1'?
   37 |     ans2 += abs(A[i]- ((int)b2 + i + 1));
      |                             ^~
      |                             b1
main.c:37:29: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define REP(i,n) for((long long)(i)=0;i<(n);i++)
long long n,a[200001];

long long fb(long long b){
  long long rtn=0;
  REP(i,n) rtn+=abs(a[i]-b-i-1);
  return rtn;
}

long long tri_search(long long l, long long r){
  long long x1=(r-l+1)/3+l,x2=x1+(r-l+1)/3,rtn;
  //cout<<l<<" "<<x1<<" "<<x2<<" "<<r<<endl;
  if(r-l<=3) return min(fb(x1),fb(x2));
  if(fb(x1)>fb(x2)) rtn=tri_search(x1,r);
  else rtn=tri_search(l,x2);
  return rtn;
} 

int main(){
  cin>>n;
  REP(i,n) cin>>a[i];
  cout<<tri_search(-1e10,1e10);
}

Compiler output:
a.cc: In function 'long long int fb(long long int)':
a.cc:8:7: error: 'i' was not declared in this scope
    8 |   REP(i,n) rtn+=abs(a[i]-b-i-1);
      |       ^
a.cc:3:34: note: in definition of macro 'REP'
    3 | #define REP(i,n) for((long long)(i)=0;i<(n);i++)
      |                                  ^
a.cc: In function 'int main()':
a.cc:23:7: error: 'i' was not declared in this scope
   23 |   REP(i,n) cin>>a[i];
      |       ^
a.cc:3:34: note: in definition of macro 'REP'
    3 | #define REP(i,n) for((long long)(i)=0;i<(n);i++)
      |                                  ^
Language: C++

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

int main() {
	int n; cin >> n;
	vector<int>a(n), b(n); for (auto&& x : a)cin >> x;
	for (int i = 0; i < n; i++) {
		b[i] = a[i] - i + 1;
	}
	sort(b.begin(), b.end());

	int bNum = b.size() % 2 == 0 ? (b[b.size() / 2] + b[b.size() / 2 - 1])/2 : b[b.size() / 2];
	long long sum = 0;
	for (auto&& x : b)sum += abs(x - b);
	cout << sum << endl;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:40: error: no match for 'operator-' (operand types are 'int' and 'std::vector<int>')
   16 |         for (auto&& x : b)sum += abs(x - b);
      |                                      ~ ^ ~
      |                                      |   |
      |                                      int std::vector<int>
In file included from /usr/include/c++/14/string:48,
                 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_iterator.h:618:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr decltype ((__y.base() - __x.base())) std::operator-(const reverse_iterator<_Iterator>&, const reverse_iterator<_IteratorR>&)'
  618 |     operator-(const reverse_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:618:5: note:   template argument deduction/substitution failed:
a.cc:16:42: note:   mismatched types 'const std::reverse_iterator<_Iterator>' and 'int'
   16 |         for (auto&& x : b)sum += abs(x - b);
      |                                          ^
/usr/include/c++/14/bits/stl_iterator.h:1790:5: note: candidate: 'template<class _IteratorL, class _IteratorR> constexpr decltype ((__x.base() - __y.base())) std::operator-(const move_iterator<_IteratorL>&, const move_iterator<_IteratorR>&)'
 1790 |     operator-(const move_iterator<_IteratorL>& __x,
      |     ^~~~~~~~
/usr/include/c++/14/bits/stl_iterator.h:1790:5: note:   template argument deduction/substitution failed:
a.cc:16:42: note:   mismatched types 'const std::move_iterator<_IteratorL>' and 'int'
   16 |         for (auto&& x : b)sum += abs(x - b);
      |                                          ^
Language: C++

n = int(input())
a = list(map(int,input().split()))
for i in range(n):
    a[i] -= i+1

a.sort()
b = a[n//2]

for i in range(n):
    a[i] = abs(a[i]-b)
print(sum(a))


Compiler output:
a.cc:1:1: error: 'n' does not name a type
    1 | n = int(input())
      | ^
Language: C++

N = int(input())

A = list(map(int, input().split(' ')))
A = [ a - (i + 1) for i, a in enumerate(A)]
A.sort()

# print(A)
n = A[(len(A)+1)//2 - 1]
A = [abs(a - n) for a in A]

# print(A)
print(sum(A))

Compiler output:
a.cc:7:3: error: invalid preprocessing directive #print
    7 | # print(A)
      |   ^~~~~
a.cc:11:3: error: invalid preprocessing directive #print
   11 | # print(A)
      |   ^~~~~
a.cc:1:1: error: 'N' does not name a type
    1 | N = int(input())
      | ^
Language: C++

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

int main(){
  int n; cin>>n;
  vector<int> x;
  for(int i=0;i<n;i++){
    int a; cin>>a;
    a=a-1-i;
    x.push_back(a);
  }
  long long ans=0;
  int med;
  sort(x.begin(),x.end());
  if(n%2!=0){
    med=x[n/2];
  }else{
    med=x[n/2]+x[n/2+1])/2;
  }
  for(int i=0;i<n;i++){
    ans+=abs(-med+x[i]);
  }
  cout<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:24: error: expected ';' before ')' token
   18 |     med=x[n/2]+x[n/2+1])/2;
      |                        ^
      |                        ;
Language: C++

#include<iostream>
using namespace std ;

int main()
{
  int N ;
  cin>>N ;
  vector<int>A(N) ;
  for(int i=0;i<N;i++) cin>>A.at(i) ;
  
  for(int i=0;i<N;i++) A.at(i)=A.at(i)-i-1 ;
  sort(A.begin(),A.end()) ;
  
  /*min=A.at(0),max=A.at[N-1]*/
  int b=(A.at(N-1)-A.at(0))/2 ;
  int sum=0 ;
  for(int i=0;i<N;i++) sum+=(A.at(i)-b>0?A.at-b:b-A.at(i)) ;
  
  cout<<sum<<endl ;
  
  return 0 ;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: 'vector' was not declared in this scope
    8 |   vector<int>A(N) ;
      |   ^~~~~~
a.cc:2:1: note: 'std::vector' is defined in header '<vector>'; this is probably fixable by adding '#include <vector>'
    1 | #include<iostream>
  +++ |+#include <vector>
    2 | using namespace std ;
a.cc:8:10: error: expected primary-expression before 'int'
    8 |   vector<int>A(N) ;
      |          ^~~
a.cc:9:29: error: 'A' was not declared in this scope
    9 |   for(int i=0;i<N;i++) cin>>A.at(i) ;
      |                             ^
a.cc:11:24: error: 'A' was not declared in this scope
   11 |   for(int i=0;i<N;i++) A.at(i)=A.at(i)-i-1 ;
      |                        ^
a.cc:12:8: error: 'A' was not declared in this scope
   12 |   sort(A.begin(),A.end()) ;
      |        ^
a.cc:12:3: error: 'sort' was not declared in this scope; did you mean 'short'?
   12 |   sort(A.begin(),A.end()) ;
      |   ^~~~
      |   short
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep2(i, s, n) for (int i = (s); i < (int)(n); i++)
typedef long long ll;

int main() {
    int N;
    cin >> N;
    vector<int> A(N);
    int s;
    for (int i = 0; i < N; i++){
        cin >> A[i];
        A[i] = A[i] - i - 1;
    }
    sort(A.begin(), A.end());
    int x, y;
    if (N % 2 == 1){
        x = N/2;
        y = N/2;
    }
    else {
        x = ((N-1)/2 + (N+1)/2)/2;
        y = x + 1;
    }
    int x = A[N / 2];
    int y = A[N / 2 + 1];
    int ans0 = 0;
    int ans1 = 0;
    for (int i = 0; i < N; i++){
        ans0 += abs(A[i] - x);
        ans1 += abs(A[i] - y);
    }
    cout << min({ans0, ans1}) << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:26:9: error: redeclaration of 'int x'
   26 |     int x = A[N / 2];
      |         ^
a.cc:17:9: note: 'int x' previously declared here
   17 |     int x, y;
      |         ^
a.cc:27:9: error: redeclaration of 'int y'
   27 |     int y = A[N / 2 + 1];
      |         ^
a.cc:17:12: note: 'int y' previously declared here
   17 |     int x, y;
      |            ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep2(i, s, n) for (int i = (s); i < (int)(n); i++)
typedef long long ll;

int main() {
    int N;
    cin >> N;
    vector<int> A(N);
    int s;
    for (int i = 0; i < N; i++){
        cin >> A[i];
        A[i] = A[i] - i - 1;
    }
    sort(A.begin(), A.end());
    int x = A[N / 2];
    int y = A[N / 2 + 1]
    int ans0 = 0;
    int ans1 = 0;
    for (int i = 0; i < N; i++){
        ans0 += abs(A[i] - x);
        ans1 += abs(A[i] - y);
    }
    cout << min({ans0, ans1}) << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:5: error: expected ',' or ';' before 'int'
   19 |     int ans0 = 0;
      |     ^~~
a.cc:22:9: error: 'ans0' was not declared in this scope; did you mean 'ans1'?
   22 |         ans0 += abs(A[i] - x);
      |         ^~~~
      |         ans1
a.cc:25:18: error: 'ans0' was not declared in this scope; did you mean 'ans1'?
   25 |     cout << min({ans0, ans1}) << endl;
      |                  ^~~~
      |                  ans1
a.cc:25:16: error: no matching function for call to 'min(<brace-enclosed initializer list>)'
   25 |     cout << min({ans0, ans1}) << endl;
      |             ~~~^~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   candidate expects 2 arguments, 1 provided
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 1 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   template argument deduction/substitution failed:
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   candidate expects 2 arguments, 1 provided
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep2(i, s, n) for (int i = (s); i < (int)(n); i++)
typedef long long ll;

int main() {
    int N;
    cin >> N;
    vector<int> A(N);
    int s;
    for (int i = 0; i < N; i++){
        cin >> A[i];
        A[i] = A[i] - i - 1;
    }
    sort(A.begin(), A.end());
    int x = A[N / 2];
    int ans0 = 0;
    int ans1 = 0;
    int ans2 = 0;
    for (int i = 0; i < N; i++){
        ans0 += abs(A[i] - x);
        ans1 += abs(A[i] - x - 1);
        ans2 += abs(A[i] - x + 1);
    }
    cout << min(ans0, ans1, ans2) << endl;
}


Compiler output:
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: In instantiation of 'constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare) [with _Tp = int; _Compare = int]':
a.cc:26:16:   required from here
   26 |     cout << min(ans0, ans1, ans2) << endl;
      |             ~~~^~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:284:17: error: '__comp' cannot be used as a function
  284 |       if (__comp(__b, __a))
      |           ~~~~~~^~~~~~~~~~
Language: C++

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

int main(){

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

    int sum = 0;
    for(int i = 0; i < m; i++){
        sum += abs(a[i] - 1)
    }
    float sumf = sum, nf = n;
    int b = round(sumf/nf);
    sum = 0;
    for(int i = 0; i < m; i++){
        sum += abs(a[i] - 1 - i);
    }

    cout << sum;
    return 0;
}

/*基本*/
/*
入力：cin >> A >> B;
出力：cout << "hello world" <<endl;

stringクラス
.size()：文字列長を返す
.substr(,)：部分文字列を返す
.find(検索する文字列,開始位置)：文字列を検索。見つけた最初の文字の位置を返す

stoi(str)：文字列を整型で解釈
*/

Compiler output:
a.cc: In function 'int main()':
a.cc:9:24: error: 'm' was not declared in this scope
    9 |     for(int i = 0; i < m; i++){
      |                        ^
a.cc:14:24: error: 'm' was not declared in this scope
   14 |     for(int i = 0; i < m; i++){
      |                        ^
a.cc:15:29: error: expected ';' before '}' token
   15 |         sum += abs(a[i] - 1)
      |                             ^
      |                             ;
   16 |     }
      |     ~                        
a.cc:20:24: error: 'm' was not declared in this scope
   20 |     for(int i = 0; i < m; i++){
      |                        ^
Language: C++

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

int main(){

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

    int sum = 0;
    for(int i = 0; i < m; i++){
        sum += abs(a[i] - 1)
    }
    float sumf = sum, nf = n;
    int b = round(sumf/nf);
    sum = 0;
    for(int i = 0; i < m; i++){
        sum += abs(a[i] - 1 - i)
    }

    cout << sum;
    return 0;
}

/*基本*/
/*
入力：cin >> A >> B;
出力：cout << "hello world" <<endl;

stringクラス
.size()：文字列長を返す
.substr(,)：部分文字列を返す
.find(検索する文字列,開始位置)：文字列を検索。見つけた最初の文字の位置を返す

stoi(str)：文字列を整型で解釈
*/

Compiler output:
a.cc: In function 'int main()':
a.cc:9:24: error: 'm' was not declared in this scope
    9 |     for(int i = 0; i < m; i++){
      |                        ^
a.cc:14:24: error: 'm' was not declared in this scope
   14 |     for(int i = 0; i < m; i++){
      |                        ^
a.cc:15:29: error: expected ';' before '}' token
   15 |         sum += abs(a[i] - 1)
      |                             ^
      |                             ;
   16 |     }
      |     ~                        
a.cc:20:24: error: 'm' was not declared in this scope
   20 |     for(int i = 0; i < m; i++){
      |                        ^
a.cc:21:33: error: expected ';' before '}' token
   21 |         sum += abs(a[i] - 1 - i)
      |                                 ^
      |                                 ;
   22 |     }
      |     ~
Language: C++

#include <bits/stdc++.h>

#define TYPE(c)   remove_reference_t<decltype(c)>
#define REP(i, n) for(TYPE(n) i = 0; i < n; i++)
#define FOR(v, c) for(TYPE(c.begin()) v = c.begin(); v != c.end(); v++)
#define ALL(c)    c.begin(), c.end()
#define SORT(c)   sort(ALL(c))
#define RSORT(c)  sort(ALL(c), greater<TYPE(c)::value_type>())
#define UNIQUE(c) c.erase(unique(ALL(c)), c.end())

using namespace std;
using ll = long long;

constexpr int MOD  = (int)1e9 + 7;
constexpr int INF  = (int)1e9 + 1;
constexpr ll  LINF = (ll)1e18 + 1;
template<typename T> constexpr bool chmax(T& a, const T& b)
{ if(a < b) { a = b; return true; } else { return false; } }
template<typename T> constexpr bool chmin(T& a, const T& b)
{ if(b < a) { a = b; return true; } else { return false; } }
template<typename S, typename T> ostream& operator<<(ostream &os, const pair<S, T>& p)
{ return os << "(" << p.first << "," << p.second << ")"; }
ostream& operator<<(ostream &os, const string& s)
{ FOR(v, s) os << *v; return os; }
template<typename T> auto operator<<(ostream& os, const T& t)
    -> typename conditional<true, ostream&, decltype(*t.begin())>::type
{ os << "["; FOR(v, t) { if(v != t.begin()) os << ","; os << *v; } os << "]"; return os; }

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

    ll N;
    std::cin >> N;
    std::vector<ll> A(N);
    REP(i, N) {
        std::cin >> A[i];
        A[i] -= (i + 1);
    }

    SORT(A[i]);

    auto med = A[N / 2];
    REP(i, N) {
        A[i] -= med;
        A[i] = abs(A[i]);
    }

    std::cout << accumulate(ALL(A), 0LL) << std::endl;

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:41:12: error: 'i' was not declared in this scope
   41 |     SORT(A[i]);
      |            ^
a.cc:6:19: note: in definition of macro 'ALL'
    6 | #define ALL(c)    c.begin(), c.end()
      |                   ^
a.cc:41:5: note: in expansion of macro 'SORT'
   41 |     SORT(A[i]);
      |     ^~~~
Language: C++

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

using ll = long long;

int main(void){
  ll N; cin >> N;
  vector<ll> A(N);
  for(ll i = 0; i < N; i++){
    ll a; cin >> a;
    A[i] = a - (i+1);
  }
  sort(A.begin(), A.end());
  ll B[2];
  if(N % 2 == 1){
    B[0] = B[1] = A[N/2];
  }else{
    B[0] = A[N/2-1];
    B[1] = A[N/2];
  }
  ll ans = ll_MAX;
  for(const auto& b: B){
    ll res = 0;
    for(ll i = 0; i < N; i++){
      res += abs(A[i] - b);
    }
    ans = min(res, ans);
  }
  cout << ans << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:12: error: 'll_MAX' was not declared in this scope
   21 |   ll ans = ll_MAX;
      |            ^~~~~~
Language: C++

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

int main() {
    ll  n;
    cin >> n;
    vector<ll> a(n);
  for(ll i=0;i<n;i++){
        cin >> a[i];
        a[i] -= i+1;
    }
    sort(a.begin(),a.end());
    ll b = a[n/2];
    ll ans = 0;
    for(ll i=0;i<n;i++){
        ans += abs(a[i]-opt);
    }
    cout << ans << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:25: error: 'opt' was not declared in this scope
   17 |         ans += abs(a[i]-opt);
      |                         ^~~
Language: C++

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

int main() {
    ll  n;
    cin >> n;
    vector<ll> a(n);
  for(ll i=0;i<n;i++){
        cin >> a[i];
        a[i] -= i+1;
    }
    sort(a.begin(),a.end());
    ll b = a[n/2];
    ll ans = 0;
    for(ll i=0;i<n;i++){
        ans += abs(a[i]-opt);
    }
    cout << ans << endl;
    return 0;
}


Compiler output:
a.cc:5:1: error: expected initializer before 'int'
    5 | int main() {
      | ^~~
Language: C++

#include <cstdio>
#include <algorithm>
#include <cmath>
#include <numeric>

int main()
{
  long long n;
  scanf("%lld", &n);
  long long a[200000];
  for (long long i = 0; i < n; ++i)
  {
    scanf("%lld", a + i);
    a[i] -= (i + 1);
  }
  std::sort(a, a + n);
  long long b = a[n / 2];
  printf("%lld\n", std::accumulate(a, a + n, 0, [&b](long long acc, lnog long a){ return acc + std::abs(a - b); }));
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:69: error: 'lnog' has not been declared
   18 |   printf("%lld\n", std::accumulate(a, a + n, 0, [&b](long long acc, lnog long a){ return acc + std::abs(a - b); }));
      |                                                                     ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(ll i=0; i<n; i++)
typedef long long ll;
typedef long long unsigned int llu;
ll MOD = 1000000007;
ll INF = 1000000009;

void solve(){
    ll n;
    cin >> n;
    ll a[n+10];
    rep(i,n){
        cin >> a[i];
        a[i] = a[i] - i - 1;
    }
    double double avg;
    double double sum=0;
    rep(i,n){
        sum+=(double double)a[i];
    }
    avg = sum/n;
    ll t = ceil(avg);

    ll s1,s2;
    s1=0;
    s2=0;
    rep(i,n){
        s1 += abs(a[i]-t);
    }
    rep(i,n){
        s2 += abs(a[i]-t+1);
    }

    cout << min(s1,s2) << endl;

}

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



Compiler output:
a.cc: In function 'void solve()':
a.cc:17:5: error: two or more data types in declaration of 'avg'
   17 |     double double avg;
      |     ^~~~~~
a.cc:18:5: error: two or more data types in declaration of 'sum'
   18 |     double double sum=0;
      |     ^~~~~~
a.cc:20:9: error: 'sum' was not declared in this scope
   20 |         sum+=(double double)a[i];
      |         ^~~
a.cc:20:15: error: two or more data types in declaration of 'type name'
   20 |         sum+=(double double)a[i];
      |               ^~~~~~
a.cc:22:5: error: 'avg' was not declared in this scope
   22 |     avg = sum/n;
      |     ^~~
a.cc:22:11: error: 'sum' was not declared in this scope
   22 |     avg = sum/n;
      |           ^~~
Language: C++

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

int main() {
    ll n;cin >> n;
    ll a[n];
    ll total = 0,sum1 = 0,sum2 = 0,sum3 = 0;
    rep(i,n){
        cin >> a[i];
        a[i] -= i+1;
        total += a[i];
    }
    ll average = total/n;
    rep(i,n){
        sum1 += abs(average - a[i]);
        sum2 += abs(average - 1 - a[i]);
        sum3 += abs(average + 1 - a[i]);
    }
    cout << min(sum1,sum2,sum3) << endl;
}

Compiler output:
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: In instantiation of 'constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare) [with _Tp = long long int; _Compare = long long int]':
a.cc:22:16:   required from here
   22 |     cout << min(sum1,sum2,sum3) << endl;
      |             ~~~^~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:284:17: error: '__comp' cannot be used as a function
  284 |       if (__comp(__b, __a))
      |           ~~~~~~^~~~~~~~~~
Language: C++

#include "pch.h"
#include<iostream>
#include<deque>
#include<algorithm>
#include<math.h>
#include<string>
using namespace std;
int main() {
	int n, b, sum = 0;
	cin >> n;
	deque<int>d(n);
	for (int i = 0; i < n; i++)
		cin >> d[i];

	for (int i = 0; i < n; i++) {
		d[i] -= (i + 1);
	}
	sort(d.begin(), d.end());
	if (n % 2 == 1)
		b = d[n / 2];
	else {
		b = ((d[n / 2] + d[n / 2 - 1]) / 2);
	}
	for (int i = 0; i < n; i++) {
		sum += abs(d[i] - b);
	}
	cout << sum << endl;
	return 0;

}

Compiler output:
a.cc:1:10: fatal error: pch.h: No such file or directory
    1 | #include "pch.h"
      |          ^~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main(){
  int n,i,k,kotae=0;
  cin>>n;
  int a[n];
  for(i=0;i<n;i++){
    cin>>a[i];
    a[i]-=i+1;
  }
  sort(a,a+n);
  k=a[n/2];
  for(i=0;i<n;i++){
    kotae+=a[i]-k;
  }
  cout><<kotae;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:8: error: expected primary-expression before '<<' token
   17 |   cout><<kotae;
      |        ^~
Language: C++

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

int main() {
  int n;
  cin >> n;
  vector<int> A(n);
  rep(i, n) cin >> A[i];

  rep(i, n) A[i] -= i + 1;
  sort(A.begin(), A.end());
  int c = n/2;
  ll ans = 0;
  rep(i,n) ans += abs(a[i] - a[c]);
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:16:23: error: 'a' was not declared in this scope
   16 |   rep(i,n) ans += abs(a[i] - a[c]);
      |                       ^
Language: C++

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

int main(){
long long n;
 cin>>n;
  long long a[n];
  long long sum=0;
  
     for(long long i=0;i<n;i++){
     	cin>>a[i];
       sum=abs(a[i]-(i+1));
     }
  cout<<sum;
}


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

#include<iostream>
#include<string>
#include<cstdio>
#include<vector>
#include<cmath>
#include<algorithm>
#include<functional>
#include<iomanip>
#include<queue>
#include<ciso646>
#include<random>
#include<map>
#include<set>
#include<complex>
#include<bitset>
#include<stack>
#include<unordered_map>
#include<utility>
using namespace std;
typedef long long ll;
typedef unsigned int ui;
const ll mod = 1000000007;
typedef long double ld;
const ll INF = 1e+14;
typedef pair<int, int> P;
#define stop char nyaa;cin>>nyaa;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define Rep(i,sta,n) for(int i=sta;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
#define per1(i,n) for(int i=n;i>=1;i--)
#define Rep1(i,sta,n) for(int i=sta;i<=n;i++)
typedef complex<ld> Point;
const ld eps = 1e-8;
const ld pi = acos(-1.0);
typedef pair<ld, ld> LDP;
typedef pair<ll, ll> LP;
#define fr first
#define sc second
#define all(c) c.begin(),c.end()
#define pb push_back

void Yes(){
	cout<<"Yes"<<endl;
	exit(0);
}
 
void No(){
	cout<<"No"<<endl;
	exit(0);
}

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
    int N; cin >> N;
    int A[200200];
    rep(i, N) {
        int a; cin >> a;
        A[i] = a - i - 1
    }
    sort(A, A + N);
    cout << A[(int)N / 2] << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:60:25: error: expected ';' before '}' token
   60 |         A[i] = a - i - 1
      |                         ^
      |                         ;
   61 |     }
      |     ~
Language: C++

#include <bits/stdc++.h>
#define REP(i,n) for (int i = 0; i < (n); i++) 
#define SORT(a) sort((a).bigin(),(a).end())
#define REV(a) reverse((a).bigin(),(a).end())
#define co(a) cout<<a<<endl;
using namespace std;
using ll = long long;


int main() {
  int n; cin >> n;
  vector<int> a(n);
  REP(i,n) cin >> a[i];
  REP(i,n) a[i]-=i+1;
  SORT(a);
  ll sum = 0;
  REP(i,n) sum += abs(a[n/2] - a[i]);
  co(sum)
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:26: error: 'class std::vector<int>' has no member named 'bigin'; did you mean 'begin'?
    3 | #define SORT(a) sort((a).bigin(),(a).end())
      |                          ^~~~~
a.cc:15:3: note: in expansion of macro 'SORT'
   15 |   SORT(a);
      |   ^~~~
Language: C++

#include <bits/stdc++.h>
#define REP(i,n) for (int i = 0; i < (n); i++) 
#define SORT(a) sort((a).bigin,(a).end)
#define REV(a) reverse((a).bigin(),(a).end())
#define co(a) cout<<a<<endl;
using namespace std;
using ll = long long;


int main() {
  int n; cin >> n;
  vector<int> a(n);
  REP(i,n) cin >> a[i];
  REP(i,n) a[i]-=i+1;
  SORT(a);
  ll sum = 0;
  REP(i,n) sum += abs(a[n/2] - a[i]);
  co(sum)
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:26: error: 'class std::vector<int>' has no member named 'bigin'; did you mean 'begin'?
    3 | #define SORT(a) sort((a).bigin,(a).end)
      |                          ^~~~~
a.cc:15:3: note: in expansion of macro 'SORT'
   15 |   SORT(a);
      |   ^~~~
Language: C++

#include <bits/stdc++.h>
#define REP(i,n) for (int i = 0; i < (n); i++) 
#define SORT(a) sort((a).bgin,(a).end)
#define REV(a) reverse((a).bgin(),(a).end())
#define co(a) cout<<a<<endl;
using namespace std;
using ll = long long;


int main() {
  int n; cin >> n;
  vector<int> a(n);
  REP(i,n) cin >> a[i];
  REP(i,n) a[i]-=i+1;
  SORT(a);
  ll sum = 0;
  REP(i,n) sum += abs(a[n/2] - a[i]);
  co(sum)
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:26: error: 'class std::vector<int>' has no member named 'bgin'; did you mean 'begin'?
    3 | #define SORT(a) sort((a).bgin,(a).end)
      |                          ^~~~
a.cc:15:3: note: in expansion of macro 'SORT'
   15 |   SORT(a);
      |   ^~~~
Language: C++

#include <bits/stdc++.h>
#define REP(i,n) for (int i = 0; i < (n); i++) 
#define SORT(a) sort((a).bgn,(a).en)
#define REV(a) reverse((a).bgn,(a).en)
#define co(a) cout<<a<<endl;
using namespace std;
using ll = long long;

ll lcm(ll a,ll b){
  ll n;
  n=a/gcd(a,b)*b;
  return n;
}


int main() {
  int n; cin >> n;
  vector<int> a(n);
  REP(i,n) cin >> a[i];
  REP(i,n) a[i]-=i+1;
  SORT(a);
  ll sum = 0;
  REP(i,n) sum += abs(b[n/2] - b[i]);
  co(sum)
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:26: error: 'class std::vector<int>' has no member named 'bgn'; did you mean 'begin'?
    3 | #define SORT(a) sort((a).bgn,(a).en)
      |                          ^~~
a.cc:21:3: note: in expansion of macro 'SORT'
   21 |   SORT(a);
      |   ^~~~
a.cc:3:34: error: 'class std::vector<int>' has no member named 'en'; did you mean 'end'?
    3 | #define SORT(a) sort((a).bgn,(a).en)
      |                                  ^~
a.cc:21:3: note: in expansion of macro 'SORT'
   21 |   SORT(a);
      |   ^~~~
a.cc:23:23: error: 'b' was not declared in this scope
   23 |   REP(i,n) sum += abs(b[n/2] - b[i]);
      |                       ^
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;
}
 
 
ll combi(ll n,ll m) {
  ll ans=1;
  rFOR(i,n,n-m){
    ans*=i;
  }
  FOR(i,1,m+1){
    ans/=i;
  }
  return ans;
}
 
 
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);
  FOR(i,0,n){
    ci(A[i]);
    A[i]-=i+1;
  }
  SORT(A);
  ll sum=0;
  FOR(i,0,n){
    sum+=abs(A[i]-A[n/2]);
  }
  co(ans)
}

Compiler output:
a.cc: In function 'int main()':
a.cc:111:6: error: 'ans' was not declared in this scope; did you mean 'abs'?
  111 |   co(ans)
      |      ^~~
a.cc:55:21: note: in definition of macro 'co'
   55 | #define co(a) cout<<a<<endl;
      |                     ^
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;
}
 
 
ll combi(ll n,ll m) {
  ll ans=1;
  rFOR(i,n,n-m){
    ans*=i;
  }
  FOR(i,1,m+1){
    ans/=i;
  }
  return ans;
}
 
 
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);
  FOR(i,0,n){
    ci(A[i]);
    A[i]-=i+1;
  }
  SORT(A);
  ll count=1;
  ll countA=0;
  ll b;
  FOR(i,1,n){
    if(A[i-1]==A[i]){
      count++;
    }
    else{
      if(countA<count){
        b=A[i-1];
        countA=count;
        count=1;
      }
    }
  }
  if(countA<count){
    countA=count;
    b=A[n-1];
  }
    ll sum=0;
    FOR(i,0,n){
      sum+=A[i];
    }
    if(countA==1){
      b=sum/2;
    }
    
    ll ans=0;
    FOR(i,0,n){
      ans+=abs(A[i]-b);
    }
    co(ans)


Compiler output:
a.cc: In function 'int main()':
a.cc:55:28: error: expected '}' at end of input
   55 | #define co(a) cout<<a<<endl;
      |                            ^
a.cc:138:5: note: in expansion of macro 'co'
  138 |     co(ans)
      |     ^~
a.cc:98:15: note: to match this '{'
   98 | signed main() {
      |               ^
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;
}
 
 
ll combi(ll n,ll m) {
  ll ans=1;
  rFOR(i,n,n-m){
    ans*=i;
  }
  FOR(i,1,m+1){
    ans/=i;
  }
  return ans;
}
 
 
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);
  FOR(i,0,n){
    ci(A[i]);
    A[i]-=i+1;
  }
  SORT(A);
  ll count=1;
  ll countA=0;
  ll b;
  FOR(i,1,n){
    if(A[i-1]==A[i]){
      count++;
    }
    else{
      if(countA<count){
        b=A[i-1];
        countA=count;
        count=1;
      }
    }
    ll sum=0;
    FOR(i,0,n){
      sum+=A[i];
    }
    if(countA==1){
      b=sum/2;
    }
    
    ll ans=0;
    FOR(i,0,n){
      ans+=abs(A[i]-b);
    }
    co(ans)
  }
    

Compiler output:
a.cc: In function 'int main()':
a.cc:134:4: error: expected '}' at end of input
  134 |   }
      |    ^
a.cc:98:15: note: to match this '{'
   98 | signed main() {
      |               ^
Language: C++


#include <stdio.h>
#include <string.h>
#include <limits.h>
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <map>
#include <set>

#ifndef U_L_LONG
typedef unsigned long long ULLONG;
#endif
#ifndef L_LONG
typedef long long LLONG;
#endif
template <class _T> static _T tp_abs(const _T& a) {
	//	usage:  tp_abs<type name>(a);
	return ((a < 0) ? (a * -1) : a);
}
template <class _T> static _T tp_min(_T a, _T b) {
	return a < b ? a : b;
}
template <class _T> static _T tp_max(_T a, _T b) {
	return a > b ? a : b;
}
template<class _T> static void get1int(_T& a) {
	const char* fmt = " %d";
	if (sizeof(_T) == sizeof(long long)) {
		fmt = " %lld";
	}

	if (scanf(fmt, &a) < 0) {
		printf("g1int Error\n");
	}
}
template<class _T> static void get2int(_T& a, _T& b) {
	const char* fmt = " %d %d";
	if (sizeof(_T) == sizeof(long long)) {
		fmt = " %lld %lld";
	}

	if (scanf(fmt, &a, &b) < 0) {
		printf("g2int Error\n");
	}
}
template<class _T> static void get3int(_T& a, _T& b, _T& c) {
	const char* fmt = " %d %d %d";
	if (sizeof(_T) == sizeof(long long)) {
		fmt = " %lld %lld %lld";
	}

	if (scanf(fmt, &a, &b, &c) < 0) {
		printf("g3int Error\n");
	}
}
template <class _T> static _T tp_gcd(_T first, _T second)
{
	_T num1 = first, num2 = second;
	_T remainder = 0, common = 0;

	if (!num1) return num2;
	if (!num2) return num1;

	while (!common) {
		remainder = num1 % num2;

		if (remainder == 0) {
			common = num2;
		}
		else {
			num1 = num2;
			num2 = remainder;
		}
	}
	return(common);
}
template <class _T> static _T tp_lcm(_T first, _T second) {
	_T gcd = tp_gcd<_T>(first, second);
	return first * second / gcd;
}


static void ABC102C_LinearApproximation();

#if 1
int main()
{
	ABC102C_LinearApproximation();
	fflush(stdout);
	return 0;
}
#endif

static void ABC102C_LinearApproximation()
{
	int N;
	get1int(N);

	auto seqA = new LLONG[N];

	LLONG sum = 0;
	for (int i = 0; i < N; i++) {
		get1int<LLONG>(seqA[i]);
		sum += seqA[i] - (i + 1);
	}
	LLONG avg = sum / N;
	LLONG avg2 = avg + 1;
	LLONG avg3 = avg - 1;

	LLONG sadSum = 0;
	LLONG sadSum2 = 0, sadSum3 = 0;
	for (int i = 0; i < N; i++) {
		sadSum += tp_abs<LLONG>(seqA[i] - (avg + i + 1));
		sadSum2 += tp_abs<LLONG>(seqA[i] - (avg2 + i + 1));
		sadSum3 += tp_abs<LLONG>(seqA[i] - (avg3 + i + 1));
	}

	LLONG min = tp_min<LLONG>(sadSum, sadSum2);
	min = tp_min<LLONG>(min, sadSums3);

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

	delete[] seqA;
}


Compiler output:
a.cc: In function 'void ABC102C_LinearApproximation()':
a.cc:121:34: error: 'sadSums3' was not declared in this scope; did you mean 'sadSum3'?
  121 |         min = tp_min<LLONG>(min, sadSums3);
      |                                  ^~~~~~~~
      |                                  sadSum3
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
int main(){
  ll n;
  cin>>n;
  
  ll arr[n+1];
  for(ll i =1;i<=n;i++)
    cin>>arr[i];
  for(ll i =1;i<=n;i++)
    arr[i] = arr[i] - i;
  
  sort(arr+1,arr+n+1);
  ll b;

  b = arr[n/2 + 1];
  

  //cout<<b<<" "<<c<<endl;
  ll cost1 = 0;
  //ll cost2 =0;
  for(ll i =1;i<=n;i++)
    {cost1 = cost1 + abs(arr[i] - b);
    //cost2 = cost2 + abs(arr[i] - c);}
  cout<<cost1;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:28:2: error: expected '}' at end of input
   28 | }
      |  ^
a.cc:4:11: note: to match this '{'
    4 | int main(){
      |           ^
Language: C++

#include <bits/stdc++.h>

#define rep(i, n) for(int i = 0, i##_len = (n); i < i##_len; ++i)
#define repp(i, m, n) for(int i = m, i##_len = (n); i < i##_len; ++i)
#define all(x) (x).begin(), (x).end()
#define clr(ar, val) memset(ar, val, sizeof(ar))
template <class T> bool chmax(T &a, const T &b) { if (a < b) { a = b; return 1; } return 0; }
template <class T> bool chmin(T &a, const T &b) { if (b < a) { a = b; return 1; } return 0; }
int gcd(int a,int b){return b?gcd(b,a%b):a;}
using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef pair <int,int> P;
typedef long double ld;

int main(void)
{
	int n, b;
	ll ans = 0;
	cin >> n;
	vactor<int> a;
	rep(i, n){
		int t;
		cin >> t;
		a.push_back(t - 1);
	}
	sort(all(a));
	if(n % 2 == 0) b = (a[n / 2] + a[n / 2 - 1]) / 2;
	else b = a[n / 2];
	rep(i, n) ans += abs(a[i] - b);
	cout << ans << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:9: error: 'vactor' was not declared in this scope
   22 |         vactor<int> a;
      |         ^~~~~~
a.cc:22:16: error: expected primary-expression before 'int'
   22 |         vactor<int> a;
      |                ^~~
a.cc:26:17: error: 'a' was not declared in this scope
   26 |                 a.push_back(t - 1);
      |                 ^
a.cc:28:18: error: 'a' was not declared in this scope
   28 |         sort(all(a));
      |                  ^
a.cc:5:17: note: in definition of macro 'all'
    5 | #define all(x) (x).begin(), (x).end()
      |                 ^
Language: C++

#include<iostream>
#include<vector>

using namespace std;

int main(){
  int N;
  cin >> N;
  
  vector<int> A(N);
  int amin = 100000;
  int imin = 100000;
  for(int i = 0; i < N; i++){
    cin >> A[i];
    if(A[i] <= amin) imin = i;
    amin = min(A[i],amin);
  }
  int bmin = amin - imin;
  #Σ=最小値を取りうるbの最小値=Aminを通る直線y=x+bの切片b b = Amin - imin
  #b=最小値から一個づつ増加させてgreedy(残差の減少がなくなった点が最小）;
  int d = 0;
  int lastd = 0;
  int ans = 0;
  int f = 0;
  for(int i = bmin; i < 100000; i++){
    for(int j = 0; j < N; j++) d += abs(A[j] - (j + 2));
    if(lastd <= d){
      ans = lastd;
      f = 1;
      break;
    }
    if(f) break;
    lastd = d;
  }
  cout << ans;
}

Compiler output:
a.cc:19:4: error: invalid preprocessing directive #\U000003a3
   19 |   #Σ=最小値を取りうるbの最小値=Aminを通る直線y=x+bの切片b b = Amin - imin
      |    ^
a.cc:20:4: error: invalid preprocessing directive #b
   20 |   #b=最小値から一個づつ増加させてgreedy(残差の減少がなくなった点が最小）;
      |    ^
Language: C++

#include<iostream>
#include<cmath>

using namespace std;


int n;

int sub(int b, int a[n]){
    int ret = 0;
    for(int i=0;i<n;i++){
        ret += abs(a[i] - (b+i+1));
    }
    return ret;
}


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

    int b = (a[0]+a[n-1])/2;
    int ans = sub(b,a);
    int tmp, tmp2;
    while(1){
        tmp = sub(b-1,a);
        tmp2 = sub(b+1,a);
        if(ans>tmp){
            ans = tmp;
            b -= 1;
        }else if(ans>tmp2){
            ans = tmp2;
            b += 1;
        }else{
            cout << ans << endl;
            return 0;
        }
    }
}


Compiler output:
a.cc:9:22: error: size of array 'a' is not an integral constant-expression
    9 | int sub(int b, int a[n]){
      |                      ^
Language: C++

import sys, re
from collections import deque, defaultdict, Counter
from math import ceil, sqrt, hypot, factorial, pi, sin, cos, radians
from heapq import heappop, heappush, heapify, heappushpop
from itertools import permutations, combinations, product
from operator import itemgetter, mul
from copy import deepcopy
from string import ascii_lowercase, ascii_uppercase, digits

def input(): return sys.stdin.readline().strip()
def INT(): return int(input())
def MAP(): return map(int, input().split())
def LIST(): return list(map(int, input().split()))
sys.setrecursionlimit(10 ** 9)
INF = float('inf')
MOD = 10 ** 9 + 7

N = INT()
A = LIST()

# for i in A:
# 	if x-i-1 < 0:
# 		minus.append(x-i-1)
# 	elif x-i-1 == 0:
# 		zero.append(0)
# 	else:
# 		plus.append(-(x-i-1))
# if len(zero) + minus and len(zero) > plus:
# 	print(sum(plus)+sum(minus))
# else:
# 	len(minus) > len(zero) and 
B = [x-i-1 for i, x in enumerate(A)]
B.sort()
# print(B)
B = [abs(x-B[len(B)//2]) for x in B]
# print(B)
print(sum(B))
# print(sum(B)-abs(B[len(B)//2])*N)


Compiler output:
a.cc:15:13: warning: multi-character character constant [-Wmultichar]
   15 | INF = float('inf')
      |             ^~~~~
a.cc:21:3: error: invalid preprocessing directive #for
   21 | # for i in A:
      |   ^~~
a.cc:22:21: error:  ':' without preceding '?'
   22 | #       if x-i-1 < 0:
      |                     ^
a.cc:24:24: error:  ':' without preceding '?'
   24 | #       elif x-i-1 == 0:
      |                        ^
a.cc:26:13: warning: extra tokens at end of #else directive [-Wendif-labels]
   26 | #       else:
      |             ^
a.cc:27:17: error: invalid preprocessing directive #plus
   27 | #               plus.append(-(x-i-1))
      |                 ^~~~
a.cc:28:9: error: missing binary operator before token "("
   28 | # if len(zero) + minus and len(zero) > plus:
      |         ^
a.cc:30:7: warning: extra tokens at end of #else directive [-Wendif-labels]
   30 | # else:
      |       ^
a.cc:31:9: error: invalid preprocessing directive #len
   31 | #       len(minus) > len(zero) and
      |         ^~~
a.cc:34:3: error: invalid preprocessing directive #print
   34 | # print(B)
      |   ^~~~~
a.cc:36:3: error: invalid preprocessing directive #print
   36 | # print(B)
      |   ^~~~~
a.cc:38:3: error: invalid preprocessing directive #print
   38 | # print(sum(B)-abs(B[len(B)//2])*N)
      |   ^~~~~
a.cc:28: error: unterminated #else
   28 | # if len(zero) + minus and len(zero) > plus:
a.cc:22: error: unterminated #else
   22 | #       if x-i-1 < 0:
a.cc:1:1: error: 'import' does not name a type
    1 | import sys, re
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
Language: C++

int main() {
    long long int n, b;
    std::cin >> n;
    std::vector<long long int> a(n);
 
    for (long long int i = 0; i < n; i++) {
        std::cin >> a[i];
        a[i] -= i;
    }
 
    std::sort(a.begin(), a.end());
    if (n % 2 == 0) b = a[n/2];
    else b = a[(n-1)/2];
 
    long long ret = 0;
 
    for (auto j : a) {
        ret += std::abs(j - b);
    }
 
    std::cout << ret << std::endl;
 
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:10: error: 'cin' is not a member of 'std'
    3 |     std::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 | int main() {
a.cc:4:10: error: 'vector' is not a member of 'std'
    4 |     std::vector<long long int> 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 | int main() {
a.cc:4:17: error: expected primary-expression before 'long'
    4 |     std::vector<long long int> a(n);
      |                 ^~~~
a.cc:7:14: error: 'cin' is not a member of 'std'
    7 |         std::cin >> a[i];
      |              ^~~
a.cc:7:14: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:7:21: error: 'a' was not declared in this scope
    7 |         std::cin >> a[i];
      |                     ^
a.cc:11:10: error: 'sort' is not a member of 'std'
   11 |     std::sort(a.begin(), a.end());
      |          ^~~~
a.cc:11:15: error: 'a' was not declared in this scope
   11 |     std::sort(a.begin(), a.end());
      |               ^
a.cc:18:21: error: 'abs' is not a member of 'std'
   18 |         ret += std::abs(j - b);
      |                     ^~~
a.cc:21:10: error: 'cout' is not a member of 'std'
   21 |     std::cout << ret << std::endl;
      |          ^~~~
a.cc:21:10: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:21:30: error: 'endl' is not a member of 'std'
   21 |     std::cout << ret << std::endl;
      |                              ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | int main() {