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

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

int main(void){
    using namespace std;
    double a;

    cin >> a;

    double a_l[a];
    double b_l[a];

    double num = 0;
    double mean = 0;

    double sum = 0;

    for(int i=0; i < a; i++){
        cin >> a_l[i];
        b_l[i] = a_l[i]-(i+1);
    }

    sort(b_l, b_l+a);

    if(a % 2 == 0){
        mean = (b_l[a/2-1] + b_l[a/2])/2;
    }else{
        mean = b_l[a/2];
    }

    for(int i=0; i<a; i++){
        num = a_l[i] - (mean + i+1);
        if(num < 0){
            num *= -1;
        }
        sum += num;
    }

    cout << sum << endl;

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:16: error: conversion from 'double' to 'long unsigned int' in a converted constant expression
   12 |     double a_l[a];
      |                ^
a.cc:12:16: error: could not convert 'a' from 'double' to 'long unsigned int'
   12 |     double a_l[a];
      |                ^
      |                |
      |                double
a.cc:12:16: error: size of array 'a_l' has non-integral type 'double'
a.cc:13:16: error: conversion from 'double' to 'long unsigned int' in a converted constant expression
   13 |     double b_l[a];
      |                ^
a.cc:13:16: error: could not convert 'a' from 'double' to 'long unsigned int'
   13 |     double b_l[a];
      |                ^
      |                |
      |                double
a.cc:13:16: error: size of array 'b_l' has non-integral type 'double'
a.cc:25:18: error: invalid operands of types 'double [1]' and 'double' to binary 'operator+'
   25 |     sort(b_l, b_l+a);
      |               ~~~^~
      |               |   |
      |               |   double
      |               double [1]
a.cc:27:10: error: invalid operands of types 'double' and 'int' to binary 'operator%'
   27 |     if(a % 2 == 0){
      |        ~ ^ ~
      |        |   |
      |        |   int
      |        double
a.cc:28:20: error: invalid types 'double [1][double]' for array subscript
   28 |         mean = (b_l[a/2-1] + b_l[a/2])/2;
      |                    ^
a.cc:28:33: error: invalid types 'double [1][double]' for array subscript
   28 |         mean = (b_l[a/2-1] + b_l[a/2])/2;
      |                                 ^
a.cc:30:19: error: invalid types 'double [1][double]' for array subscript
   30 |         mean = b_l[a/2];
      |                   ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
    int N;
    cin >> N;
    int A[N];
    for (i=0;i<N;i++){
        cin >> A[N];
    }
    
    double asum=0;
    for(i=0;i<N;i++){
        asum += A[i];
    }
    int b = floor(asum/N - 1.0/2.0*(N+1));
 
    int bsum = 0;
    for(i=0;i<N;i++){
        bsum += abs(A[i]-b-(i+1));
    }
    cout << bsum << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:10: error: 'i' was not declared in this scope
    7 |     for (i=0;i<N;i++){
      |          ^
a.cc:12:9: error: 'i' was not declared in this scope
   12 |     for(i=0;i<N;i++){
      |         ^
a.cc:18:9: error: 'i' was not declared in this scope
   18 |     for(i=0;i<N;i++){
      |         ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
    int N;
    int A[N];
    cin >> N;
    for (i=0;i<N;i++){
        cin >> A[N]
    }
    
    double asum=0;
    for(i=0;i<N;i++){
        asum += A[i]
    }
    int b = floor(asum/N - 1.0/2.0*(N+1))  

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

Compiler output:
a.cc: In function 'int main()':
a.cc:7:10: error: 'i' was not declared in this scope
    7 |     for (i=0;i<N;i++){
      |          ^
a.cc:8:20: error: expected ';' before '}' token
    8 |         cin >> A[N]
      |                    ^
      |                    ;
    9 |     }
      |     ~               
a.cc:12:9: error: 'i' was not declared in this scope
   12 |     for(i=0;i<N;i++){
      |         ^
a.cc:17:5: error: expected ',' or ';' before 'int'
   17 |     int bsum = 0;
      |     ^~~
a.cc:18:9: error: 'i' was not declared in this scope
   18 |     for(i=0;i<N;i++){
      |         ^
a.cc:19:9: error: 'bsum' was not declared in this scope; did you mean 'asum'?
   19 |         bsum += abs(A[i]-b-(i+1))
      |         ^~~~
      |         asum
a.cc:21:13: error: 'bsum' was not declared in this scope; did you mean 'asum'?
   21 |     cout << bsum << endl;
      |             ^~~~
      |             asum
Language: C++

main :: IO ()
main = do
  n <- readLn
  as <- map read . words <$> getLine
  let bs = sort $ zipWith (-) as [1..n]
  print $ solve n bs

solve :: Int -> [Int] -> Int
solve n bs
  | odd n = bs !! ((n-1) `div` 2)
  | even n = ((bs !! ((n `div` 2) - 1)) 
    + (bs !! (n `div` 2))) `div` 2

Compiler output:
a.cc:5:35: error: too many decimal points in number
    5 |   let bs = sort $ zipWith (-) as [1..n]
      |                                   ^~~~
a.cc:10:26: error: stray '`' in program
   10 |   | odd n = bs !! ((n-1) `div` 2)
      |                          ^
a.cc:10:30: error: stray '`' in program
   10 |   | odd n = bs !! ((n-1) `div` 2)
      |                              ^
a.cc:11:26: error: stray '`' in program
   11 |   | even n = ((bs !! ((n `div` 2) - 1))
      |                          ^
a.cc:11:30: error: stray '`' in program
   11 |   | even n = ((bs !! ((n `div` 2) - 1))
      |                              ^
a.cc:12:17: error: stray '`' in program
   12 |     + (bs !! (n `div` 2))) `div` 2
      |                 ^
a.cc:12:21: error: stray '`' in program
   12 |     + (bs !! (n `div` 2))) `div` 2
      |                     ^
a.cc:12:28: error: stray '`' in program
   12 |     + (bs !! (n `div` 2))) `div` 2
      |                            ^
a.cc:12:32: error: stray '`' in program
   12 |     + (bs !! (n `div` 2))) `div` 2
      |                                ^
a.cc:1:1: error: 'main' does not name a type
    1 | main :: IO ()
      | ^~~~
Language: C++

import statistics
import math

N = int(input())
a = input().split()
ans = 0
for i in range(0,N):
	a[i] = int(a[i])-i
med = int(statistics.median(a))
for i in range(0,N):
	ans += abs(a[i]-med)
print(int(ans))

Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import statistics
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
Language: C++

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


typedef pair<int, int> P;
typedef long long LL;

const int INF = INT_MAX / 2;

int n;
int a[200001];

int main()
{
    ios::sync_with_stdio(false);
    cin >> n;
    for(int i = 1; i <= n; i++) {
        cin >> a[i];
        a[i] -= i;
    }
    for (int i = 1; i <= n; i++)
        cout << a[i] << " ";
    sort(a+1, a+1+n);

    int maxV = a[n];
    int minV = a[1];
    
    int aV = max(abs(a[1]), abs(a[n]));
    int ans = 0;
    for (int i = 1; i <= n; i++) {
        a[i] -= av;
        ans += abs(a[i]);
    }
    
    cout << ans << endl;
    
    



}

Compiler output:
a.cc: In function 'int main()':
a.cc:31:17: error: 'av' was not declared in this scope; did you mean 'aV'?
   31 |         a[i] -= av;
      |                 ^~
      |                 aV
Language: C++

#include <iostream>
#include <vector>

using namespace std;

vector<int> A(200001);
int N;
int main() {
    cin >> N ;
    A.resize(N);
    for (int i = 0; i < N; ++i) {
        int a;
        cin >> a;
        A[i] = a- i;
    }
    sort(A.begin(), A.end());
    int b = A[N/2];

    int sum = 0;
    for (int j = 0; j < N; ++j) {
        sum += abs(A[j] - b);
    }
    cout << sum << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   16 |     sort(A.begin(), A.end());
      |     ^~~~
      |     short
Language: C++

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

int main(){
    int n,in,sum=0;
    cin>>n;
    vector <long long> a;
    vector <long long> c;
    for(int i=0; i<n; i++){
        cin>>in;
        a.push_back(in);
        c.push_back(in-i)
    }
    sort(c.begin(),c.end());
    int b=c[n/2]-n/2;
    for(int i=0; i<n; i++){
        sum+=abs(a[i]-i-b);
        
    }
    cout<<sum<<endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:26: error: expected ';' before '}' token
   13 |         c.push_back(in-i)
      |                          ^
      |                          ;
   14 |     }
      |     ~
Language: C++

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

int main(){
    int n,in,sum=0;
    cin>>n;
    vector <long long> a;
    for(int i=0; i<n; i++){
        cin>>in;
        a.push_back(in);
    }
    int b=a[n/2]-n/2;
    for(int i=0; i<n; i++){
        sum+=abs(a[i]-i-b);
        
    }
    cout<<sum1<<endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:11: error: 'sum1' was not declared in this scope; did you mean 'sum'?
   18 |     cout<<sum1<<endl;
      |           ^~~~
      |           sum
Language: C++

#include<bits/stdc++.h>
using namespace std;
long long A[200010]={0};
int main(){
	int N;
	long long ans1=0,ans2=0,mid1,mid2;
	cin>>N;
	for(int i=1;i<=N;i++){
		cin>>A[i];
		A[i]=A[i]-i;
	}
	sort(A,A+N,greater<int>());
	if(N%2==1) mid=A[N/2];
	else mid=(A[N/2-1]+A[N/2])/2;
	mid2=mid1+1;
	for(int i=1;i<=N;i++){
		ans1=ans1+abs(A[i]-mid1);
		ans2=ans2+abs(A[i]-mid2);
	}

	cout<<min(1ans,2ans);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:20: error: 'mid' was not declared in this scope; did you mean 'mid2'?
   13 |         if(N%2==1) mid=A[N/2];
      |                    ^~~
      |                    mid2
a.cc:14:14: error: 'mid' was not declared in this scope; did you mean 'mid2'?
   14 |         else mid=(A[N/2-1]+A[N/2])/2;
      |              ^~~
      |              mid2
a.cc:21:19: error: unable to find numeric literal operator 'operator""ans'
   21 |         cout<<min(1ans,2ans);
      |                   ^~~~
a.cc:21:24: error: unable to find numeric literal operator 'operator""ans'
   21 |         cout<<min(1ans,2ans);
      |                        ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
long long A[200010]={0};
int main(){
	int N;
	long long 1ans=0,2ans=0,mid1,mid2;
	cin>>N;
	for(int i=1;i<=N;i++){
		cin>>A[i];
		A[i]=A[i]-i;
	}
	sort(A,A+N,greater<int>());
	if(N%2==1) mid=A[N/2];
	else mid=(A[N/2-1]+A[N/2])/2;
	mid2=mid1+1;
	for(int i=1;i<=N;i++){
		1ans=1ans+abs(A[i]-mid1);
		2ans=2ans+abs(A[i]-mid2);
	}

	cout<<min(1ans,2ans);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:19: error: expected unqualified-id before numeric constant
    6 |         long long 1ans=0,2ans=0,mid1,mid2;
      |                   ^~~~
a.cc:13:20: error: 'mid' was not declared in this scope
   13 |         if(N%2==1) mid=A[N/2];
      |                    ^~~
a.cc:14:14: error: 'mid' was not declared in this scope
   14 |         else mid=(A[N/2-1]+A[N/2])/2;
      |              ^~~
a.cc:15:9: error: 'mid2' was not declared in this scope
   15 |         mid2=mid1+1;
      |         ^~~~
a.cc:15:14: error: 'mid1' was not declared in this scope
   15 |         mid2=mid1+1;
      |              ^~~~
a.cc:17:17: error: unable to find numeric literal operator 'operator""ans'
   17 |                 1ans=1ans+abs(A[i]-mid1);
      |                 ^~~~
a.cc:17:22: error: unable to find numeric literal operator 'operator""ans'
   17 |                 1ans=1ans+abs(A[i]-mid1);
      |                      ^~~~
a.cc:18:17: error: unable to find numeric literal operator 'operator""ans'
   18 |                 2ans=2ans+abs(A[i]-mid2);
      |                 ^~~~
a.cc:18:22: error: unable to find numeric literal operator 'operator""ans'
   18 |                 2ans=2ans+abs(A[i]-mid2);
      |                      ^~~~
a.cc:21:19: error: unable to find numeric literal operator 'operator""ans'
   21 |         cout<<min(1ans,2ans);
      |                   ^~~~
a.cc:21:24: error: unable to find numeric literal operator 'operator""ans'
   21 |         cout<<min(1ans,2ans);
      |                        ^~~~
Language: C++

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

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

int N;
int A[200000];

int main() {
  scanf("%d", &N);
  REP(i,N) {
    scanf("%d", &A[i]);
    A[i] -= (i + 1);
  }

  sort(A, A[N]);
  int med = A[(N/2)];
  unsigned long long result = 0;
  REP(i, N) result += abs(A[i] - med);
  printf("%d\n", &result);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:7: error: no matching function for call to 'sort(int [200000], int&)'
   19 |   sort(A, A[N]);
      |   ~~~~^~~~~~~~~
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_algo.h:4762:5: note: candidate: 'template<class _RAIter> void std::sort(_RAIter, _RAIter)'
 4762 |     sort(_RandomAccessIterator __first, _RandomAccessIterator __last)
      |     ^~~~
/usr/include/c++/14/bits/stl_algo.h:4762:5: note:   template argument deduction/substitution failed:
a.cc:19:7: note:   deduced conflicting types for parameter '_RAIter' ('int*' and 'int')
   19 |   sort(A, A[N]);
      |   ~~~~^~~~~~~~~
/usr/include/c++/14/bits/stl_algo.h:4793:5: note: candidate: 'template<class _RAIter, class _Compare> void std::sort(_RAIter, _RAIter, _Compare)'
 4793 |     sort(_RandomAccessIterator __first, _RandomAccessIterator __last,
      |     ^~~~
/usr/include/c++/14/bits/stl_algo.h:4793:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:86:
/usr/include/c++/14/pstl/glue_algorithm_defs.h:292:1: note: candidate: 'template<class _ExecutionPolicy, class _RandomAccessIterator, class _Compare> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void> std::sort(_ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Compare)'
  292 | sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp);
      | ^~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:292:1: note:   candidate expects 4 arguments, 2 provided
/usr/include/c++/14/pstl/glue_algorithm_defs.h:296:1: note: candidate: 'template<class _ExecutionPolicy, class _RandomAccessIterator> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void> std::sort(_ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator)'
  296 | sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last);
      | ^~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:296:1: note:   candidate expects 3 arguments, 2 provided
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);
  
  const int m {A[N/2]};
  int ans {0};
  
  for(int i = 0; i < N; ++i) ans += abs(A[i]-m);

  cout << ans << endl;
}

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<iostream>
#include<algorithm>

using namespace std;

int main(void){
    int n;
    cin >> n;
    int a[204000];
    int k[204000];
    for(int b = 0; b < n; b++){
        cin >> a[b];
        k[b] = a[b];
    }

    sort(a, a + n);
    int ans1 = 0;
    int f = a[n/2] - n/2;
    for(int c = 0; c < n; c++){
        ans1 += abs(k[c] - f - c);
    }
    int ans2 = 0;
    f = a[n/2 + 1] - n/2 - 1;
    for(int d = 0; d < n; d++){
        ans2 += abs(k[c] - f - d);
    }

    if(ans1 > ans2)ans1 = ans2;

    cout << ans1 << endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:25:23: error: 'c' was not declared in this scope
   25 |         ans2 += abs(k[c] - f - d);
      |                       ^
Language: C++

#include<iostream>
#include<algorithm>

using namespace std;

int main(void){
    int n;
    cin >> n;
    int a[204000];
    int k[204000];
    for(int b = 0; b < n; b++){
        cin >> a[b];
        k[b] = a[b];
    }

    sort(a, a + n);
    int ans1 = 0;
    int f = a[n/2] - n/2;
    for(int c = 0; c < n; c++){
        ans1 += abs(k[c] - f - c);
    }
    int ans2 = 0;
    int f = a[n/2 + 1] - n/2 - 1;
    for(int d = 0; d < n; d++){
        ans2 += abs(k[c] - f - d);
    }

    if(ans1 > ans2)ans1 = ans2;

    cout << ans1 << endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:9: error: redeclaration of 'int f'
   23 |     int f = a[n/2 + 1] - n/2 - 1;
      |         ^
a.cc:18:9: note: 'int f' previously declared here
   18 |     int f = a[n/2] - n/2;
      |         ^
a.cc:25:23: error: 'c' was not declared in this scope
   25 |         ans2 += abs(k[c] - f - d);
      |                       ^
Language: C++

#include <iostream>
#include <string>
#include <cmath>
#include <algorithm>

long long int n;
long long int a[200000] = {0};

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

  for (size_t i = 0; i < n; i++) {
    std::cin >> a[i];
    a[i] -= i + 1;
  }

  std::sort(a, a + n);

  long long int median = (n % 2 == 0) ? a[n/2-1] : a[(n+1)/2-1];

  long long int sum = 0;
  for (long long i = 0; i < n; i++) {
    //sum += abs(a[i] - (b + i + 1));
    sum += abs(a[i] - b);
  }

  std::cout << sum << std::endl;

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:23: error: 'b' was not declared in this scope
   24 |     sum += abs(a[i] - b);
      |                       ^
Language: C++

#include <stdio.h>
#include <stdlib.h>
long long int compare_long_int(const void *a, const void *b)
{
    return *(long long int*)a - *(long long int*)b;
}

int main() {
  long long int N;
  long long int A[10000];
  long long int b[10000];
  int i;
  scanf("%lld", &N);
  for (i = 0; i < N; i++) {
    scanf("%lld", &A[i]);   
  }

  long long int min = A[0];
  long long int max = A[0];
  for (i = 0; i < N; i++) {
    if (min > A[i]) {
      min = A[i];
    }
     if (max < A[i]) {
      max = A[i];
    }
     b[i] = A[i] - i;
  }
  qsort(b, N, sizeof(long long int), compare_long_int);

  long long int bb = b[N/2];
  min = 0;
  long long int sum[100000] = {0};
  for (i = 0; i < N; i++) {
    min += abs(A[i] - ((bb) + i));
  }
  
  /* for (b = 0; b < max ; b++) { */
  /*   for (i = 0; i < N; i++) { */
  /*     sum[b] += abs(A[i] - ((b) + i)); */

  /*   } */
  /*   printf("%d, ", sum[b]); */
  /* } */
  /* puts(""); */
  /* min = sum[0]; */
  /* for (b = 0; b < max ; b++) { */
  /*   if (min > sum[b]) { */
  /*     min = sum[b]; */
  /*   } */
  /* } */
  printf("%lld\n", min);
  
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:29:38: error: invalid conversion from 'long long int (*)(const void*, const void*)' to '__compar_fn_t' {aka 'int (*)(const void*, const void*)'} [-fpermissive]
   29 |   qsort(b, N, sizeof(long long int), compare_long_int);
      |                                      ^~~~~~~~~~~~~~~~
      |                                      |
      |                                      long long int (*)(const void*, const void*)
In file included from /usr/include/c++/14/cstdlib:79,
                 from /usr/include/c++/14/stdlib.h:36,
                 from a.cc:2:
/usr/include/stdlib.h:971:34: note:   initializing argument 4 of 'void qsort(void*, size_t, size_t, __compar_fn_t)'
  971 |                    __compar_fn_t __compar) __nonnull ((1, 4));
      |                    ~~~~~~~~~~~~~~^~~~~~~~
Language: C++

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

int N;
vector<int> A, B;

int getMinSadness(int x){
    int sad = 0;
    for(int i = 0; i < N; i++){
        sad += abs(A[i] - (x + i));
    }
    return sad;
}

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

    int b1 = B[N/2 - 1];
    int b2 = B[N/2];
    int b3 = B[N/2 + 1];
    // cout << b1 << ' ' << b2 << endl;

    int ans = min(getMinSadness(b1), getMinSadness(b2));
    int ans = min(ans, getMinSadness(b3));
    cout << ans << endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:31:9: error: redeclaration of 'int ans'
   31 |     int ans = min(ans, getMinSadness(b3));
      |         ^~~
a.cc:30:9: note: 'int ans' previously declared here
   30 |     int ans = min(getMinSadness(b1), getMinSadness(b2));
      |         ^~~
Language: C++

#include<iostream>
#include<algorithm>
#include<vector>
#include<cmath>
using namespace std;
using ll = long long;
int main(){
	ll n,x,mid,sum,ans;
	cin >> n;
	vector<long long> vc(n);
	for(ll i=0;i<n;i++){
			cin >> vc[i];
			vc[i]-=(i+1);
	}
	if(n==1){
		cout << 0 << endl;
		return 0;
	}
	sort(vc.begin(),vc.end());
	sum = 0;
	mid = (vc[n/2])
	for(ll i=0;i<n;i++)	sum+=abs(vc[i]-mid);
	ans = sum;
	sum = 0;
	mid = vc[n/2+1];
	for(ll i=0;i<n;i++)	sum+=abs(vc[i]-mid);
	ans = max(ans,sum);
	sum = 0;
	mid = vc[n/2-1];
	for(ll i=0;i<n;i++)	sum+=abs(vc[i]-mid);
	ans = max(ans,sum);
	cout << ans << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:21:24: error: expected ';' before 'for'
   21 |         mid = (vc[n/2])
      |                        ^
      |                        ;
   22 |         for(ll i=0;i<n;i++)     sum+=abs(vc[i]-mid);
      |         ~~~             
a.cc:22:20: error: 'i' was not declared in this scope
   22 |         for(ll i=0;i<n;i++)     sum+=abs(vc[i]-mid);
      |                    ^
Language: C++

#include<iostream>
#include<algorithm>
#include<vector>
#include<cmath>
using namespace std;
using ll = long long;
int main(){
	ll n,x,mid,sum,ans;
	cin >> n;
	vector<long long> vc(n);
	for(ll i=0;i<n;i++){
			cin >> vc[i];
			vc[i]-=(i+1);
	}
	if(n==1){
		cout << 0 << endl;
		return 0;
	}
	sort(vc.begin(),vc.end());
			sum = 0;
			mid = (vc[n/2])
			for(ll i=0;i<n;i++)	sum+=abs(vc[i]-mid);
			ans = sum;
			sum = 0;
			mid = vc[n/2+1];
			for(ll i=0;i<n;i++)	sum+=abs(vc[i]-mid);
			ans = max(ans,sum);
			sum = 0;
			mid = vc[n/2-1];
			for(ll i=0;i<n;i++)	sum+=abs(vc[i]-mid);
			ans = max(ans,sum);
			
	}
	cout << ans << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:21:40: error: expected ';' before 'for'
   21 |                         mid = (vc[n/2])
      |                                        ^
      |                                        ;
   22 |                         for(ll i=0;i<n;i++)     sum+=abs(vc[i]-mid);
      |                         ~~~             
a.cc:22:36: error: 'i' was not declared in this scope
   22 |                         for(ll i=0;i<n;i++)     sum+=abs(vc[i]-mid);
      |                                    ^
a.cc: At global scope:
a.cc:34:9: error: 'cout' does not name a type
   34 |         cout << ans << endl;
      |         ^~~~
a.cc:35:9: error: expected unqualified-id before 'return'
   35 |         return 0;
      |         ^~~~~~
a.cc:36:1: error: expected declaration before '}' token
   36 | }
      | ^
Language: C++

#include<vector>
#include<iostream>
#include<algorithm>
using namespace std;
int main(){
	int n;
	vector<long long>a,b;
	cin>>n;
	a.resize(n);
	b.resize(n);
	for(int i=0;i<n;i++){
		cin>>a[i];
		b[i]=a[i]-i-1;
	}
	sort(b.begin(),b.end());
	long long c=b[n/2],ans=0;
	for(int i=0;i<n;i++)ans+=abs(b[i]-c;
	cout<<ans<<endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:44: error: expected ')' before ';' token
   17 |         for(int i=0;i<n;i++)ans+=abs(b[i]-c;
      |                                     ~      ^
      |                                            )
Language: Java

import java.util.Arrays;
import java.util.Scanner;
public class Question102 {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] A = new int[N];

		for(int i=0; i<N; i++) {
			A[i] = sc.nextInt();
			A[i] -= i+1;
		}Arrays.sort(A);

		double amed = 0;
		if(N%2==0) {
			amed = A[N/2];
		}else {
			amed = (A[(N-1)/2] + A[(N+1)/2])/2;
		}

		int ans = 0;
		for(int j=0; j<N; j++) {
				ans += Math.abs(amed - A[j]);
		}

		System.out.println((int)ans);

	}

}


Compiler output:
Main.java:3: error: class Question102 is public, should be declared in a file named Question102.java
public class Question102 {
       ^
1 error
Language: C++

using namespace std;
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define rep(i,n)   FOR(i,0,n)
#define pb emplace_back
typedef long long ll;
typedef pair<int,int> pint;

ll a[200001];
int main(){
    int n;
    cin>>n;
    ll ai;
    rep(i,n){
        cin>>ai;
        a[i]=ai-(i+1);
    }
    sort(a,a+n);
    ll b=a[n/2];
    ll sum=0;
    rep(i,n){
        sum+=abs(a[i]-b);
    }
    cout<<sum<<endl;
    return 0;
}

Compiler output:
a.cc:6:9: error: 'pair' does not name a type
    6 | typedef pair<int,int> pint;
      |         ^~~~
a.cc: In function 'int main()':
a.cc:11:5: error: 'cin' was not declared in this scope
   11 |     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 | using namespace std;
a.cc:17:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   17 |     sort(a,a+n);
      |     ^~~~
      |     short
a.cc:21:14: error: 'abs' was not declared in this scope
   21 |         sum+=abs(a[i]-b);
      |              ^~~
a.cc:23:5: error: 'cout' was not declared in this scope
   23 |     cout<<sum<<endl;
      |     ^~~~
a.cc:23:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:23:16: error: 'endl' was not declared in this scope
   23 |     cout<<sum<<endl;
      |                ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | using namespace std;
Language: C++


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

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

Compiler output:
a.cc:5:10: fatal error: algorhithm: No such file or directory
    5 | #include <algorhithm>
      |          ^~~~~~~~~~~~
compilation terminated.
Language: C++

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

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

Compiler output:
a.cc: In function 'int main()':
a.cc:21:5: error: 'sort' was not declared in this scope; did you mean 'sqrt'?
   21 |     sort(b.begin(),b.end());
      |     ^~~~
      |     sqrt
Language: C++

#include <iostream>
#include <algorithm>

#define int long long

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 b = A[N / 2];

    int ans = 0;

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

    return 0;
}

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

#include <iostream>
#include <algorithm>

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

using namespace std;

int main()
{
    int N, A[200005];
    
    cin >> N;

    REP(i, N) {
        cin >> A[i];
        A[i] -= i + 1;
    }

    sort(A, A + N);

    int b = A[N / 2];

    int ans = 0;

    REP(i, N) { ans += abs(A[i] - b); }
    cout << ans << endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:9: error: 'i_len' was not declared in this scope
   14 |     REP(i, N) {
      |         ^
a.cc:4:35: note: in definition of macro 'REP'
    4 | #define REP(i, n) for (int i = 0; i##_len = (n); i < i##_len; ++i)
      |                                   ^
a.cc:4:61: error: expected ')' before ';' token
    4 | #define REP(i, n) for (int i = 0; i##_len = (n); i < i##_len; ++i)
      |                       ~                                     ^
a.cc:14:5: note: in expansion of macro 'REP'
   14 |     REP(i, N) {
      |     ^~~
a.cc:14:9: error: 'i' was not declared in this scope
   14 |     REP(i, N) {
      |         ^
a.cc:4:65: note: in definition of macro 'REP'
    4 | #define REP(i, n) for (int i = 0; i##_len = (n); i < i##_len; ++i)
      |                                                                 ^
a.cc:25:9: error: 'i_len' was not declared in this scope
   25 |     REP(i, N) { ans += abs(A[i] - b); }
      |         ^
a.cc:4:35: note: in definition of macro 'REP'
    4 | #define REP(i, n) for (int i = 0; i##_len = (n); i < i##_len; ++i)
      |                                   ^
a.cc:4:61: error: expected ')' before ';' token
    4 | #define REP(i, n) for (int i = 0; i##_len = (n); i < i##_len; ++i)
      |                       ~                                     ^
a.cc:25:5: note: in expansion of macro 'REP'
   25 |     REP(i, N) { ans += abs(A[i] - b); }
      |     ^~~
Language: C++

#include <iostream>
#include <algorithm>

 
#define int long long
 
#define REP(i, n) for (int i = 0, i##_len = (n); i < i##_len; ++i)
#define REPS(i, n) for (int i = 1, i##_len = (n); i <= i##_len; ++i)
#define FOR(i, a, b) for (int i = (a), i##_len = (b); i <= i##_len; ++i)
#define REV(i, a, b) for (int i = (a); i >= (b); --i)
#define CLR(a, b) memset((a), (b), sizeof(a))
#define DUMP(x) cout << #x << " = " << (x) << endl;
#define INF (LLONG_MAX - 1e5)

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 b = A[N / 2];

    int ans = 0;

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

    return (0);
}

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

#include <iostream>
#include <algorithm>

#define abs(x) x < 0 ? x *= -1 : x;

using namespace std;

signed 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 b = A[N / 2];

    int ans = 0;

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

    return (0);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:28:25: error: lvalue required as left operand of assignment
   28 |         ans += abs(A[i] - b);
      |                    ~~~~~^~~
a.cc:4:24: note: in definition of macro 'abs'
    4 | #define abs(x) x < 0 ? x *= -1 : x;
      |                        ^
Language: C++

#include <iostream>
#include <algorithm>

#define abs(x) x < 0 ? x *= -1 : x;

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 b = A[N / 2];

    int ans = 0;

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

    return (0);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:28:25: error: lvalue required as left operand of assignment
   28 |         ans += abs(A[i] - b);
      |                    ~~~~~^~~
a.cc:4:24: note: in definition of macro 'abs'
    4 | #define abs(x) x < 0 ? x *= -1 : x;
      |                        ^
Language: C++

#include <iostream>
#include <algorithm>

#define abs(x) if(x < 0) x * -1;

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 b = A[N / 2];

    int ans = 0;

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

    return (0);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:16: error: expected primary-expression before 'if'
    4 | #define abs(x) if(x < 0) x * -1;
      |                ^~
a.cc:28:16: note: in expansion of macro 'abs'
   28 |         ans += abs(A[i] - b);
      |                ^~~
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];int sum=0
  for(int i=0;i<N;i++)sum+=A[i];
  cout<<sum/N-1<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: expected ',' or ';' before 'for'
    5 |   for(int i=0;i<N;i++)sum+=A[i];
      |   ^~~
a.cc:5:15: error: 'i' was not declared in this scope
    5 |   for(int i=0;i<N;i++)sum+=A[i];
      |               ^
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];int sum=0
  for(int i=0;i<N;i++)sum+=A[i];
  cout<<sum-N<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: expected ',' or ';' before 'for'
    5 |   for(int i=0;i<N;i++)sum+=A[i];
      |   ^~~
a.cc:5:15: error: 'i' was not declared in this scope
    5 |   for(int i=0;i<N;i++)sum+=A[i];
      |               ^
Language: C++

n = gets.to_i
a = gets.chomp.split(" ").map(&:to_i)
c = Array.new

for i in 0...n do
  c[i] = (a[i] - (i + 1)).abs
end

c.sort!

b = (n % 2 == 0)? c[n/2 -1]: c[(n-1)/2]

ans = 0

for i in 0...n do
  ans += (c[i] - b).abs
end

puts "#{ans}\n"


Compiler output:
a.cc:5:10: error: too many decimal points in number
    5 | for i in 0...n do
      |          ^~~~~
a.cc:15:10: error: too many decimal points in number
   15 | for i in 0...n do
      |          ^~~~~
a.cc:1:1: error: 'n' does not name a type
    1 | n = gets.to_i
      | ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
long long n,a[1000000005],b;
int main(){
cin>>n;
for(int i=0;i<n;i++)  cin>>a[i];
sort(a,a+100000005);
reverse(a,a+1000000005);
long long cnt[1000000005];
for(;b<=a[0];b++){
int i=1;
cnt[i-1]+=abs(a[0]-(b+i));
i++;
}
sort(cnt,cnt+1000000005);
cout<<cnt[0];
return 0;
}


Compiler output:
/tmp/ccXtaa71.o: in function `main':
a.cc:(.text+0xd2): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccXtaa71.o
a.cc:(.text+0x125): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccXtaa71.o
a.cc:(.text+0x130): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccXtaa71.o
a.cc:(.text+0x13e): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccXtaa71.o
collect2: error: ld returned 1 exit status
Language: C++

#include<bits/stdc++.h>
using namespace std;
longlong n,a[1000000005],b;
int main(){
cin>>n;
for(int i=0;i<n;i++)  cin>>a[i];
sort(a,a+100000005);
reverse(a,a+1000000005);
int cnt[1000000005];
for(;b<=a[0];b++){
int i=1;
cnt[i-1]+=abs(a[0]-(b+i));
i++;
}
sort(cnt,cnt+1000000005);
cout<<cnt[0];
return 0;
}

Compiler output:
a.cc:3:1: error: 'longlong' does not name a type
    3 | longlong n,a[1000000005],b;
      | ^~~~~~~~
a.cc: In function 'int main()':
a.cc:5:6: error: 'n' was not declared in this scope; did you mean 'yn'?
    5 | cin>>n;
      |      ^
      |      yn
a.cc:6:28: error: 'a' was not declared in this scope
    6 | for(int i=0;i<n;i++)  cin>>a[i];
      |                            ^
a.cc:7:6: error: 'a' was not declared in this scope
    7 | sort(a,a+100000005);
      |      ^
a.cc:10:6: error: 'b' was not declared in this scope
   10 | for(;b<=a[0];b++){
      |      ^
Language: C++


// last.cpp : コンソール アプリケーションのエントリ ポイントを定義します。
//
#include<iostream>
#include <cmath>
#include <string>
#include <float.h>
#include <vector>
#include <algorithm>
using namespace std;
 
int main()
{
    int l;
    cin>>l;
    int* num = new int[l];
    int* hik = new int[l];
    int b = 0;
    int kanasimi=0;
 
    
    for (int i = 0;i<l;i++){
        cin>>num[i];
        hik[i]=num[i]-i;
    }
 
    sort(hik, hik+l);
    if(l%2){
        b=hik[(l-1)/2];
    }else{
        b=(hik[l/2]+hik[(l/2)+1])/2;
    }
    for(int i = 0;i<l;i++){
        kanasimi=kanasimi+abs(num[i]-i-b);
    }
    
    cout<<kanasimi;
    
    delete num;
    delete hik;
    
}

// last.cpp : コンソール アプリケーションのエントリ ポイントを定義します。
//
#include<iostream>
#include <cmath>
#include <string>
#include <float.h>
#include <vector>
#include <algorithm>
using namespace std;

int main()
{
    int l;
    cin>>l;
    int* num = new int[l];
    int* hik = new int[l];
    int b = 0;
    int kanasimi=0;

    
    for (int i = 0;i<l;i++){
        cin>>num[i];
        hik[i]=num[i]-i;
    }

    sort(hik, hik+l);
    if(l%2){
        b=hik[(l-1)/2];
    }else{
        b=(hik[l/2]+hik[(l/2)-1])/2;
    }
    for(int i = 0;i<l;i++){
        kanasimi=kanasimi+abs(num[i]-i-b);
    }
    
    cout<<kanasimi;
    
    delete num;
    delete hik;
    
}


Compiler output:
a.cc:54:5: error: redefinition of 'int main()'
   54 | int main()
      |     ^~~~
a.cc:12:5: note: 'int main()' previously defined here
   12 | int main()
      |     ^~~~
Language: C++

#include<cstdio>
#include<iostream>
#include<algorithm>
using namespace std;
unsigned long long n,a[100001],k,sum=0;
int main()
{
	cin>>n;
	for(int i=1;i<=n;i++)
	{	
		cin>>a[i];
		a[i]-=i;
	}
	sort(a+1,a+n+1);
	if(n%2)
		k=a[n/2+1];
	else
			k=((a[n/2]+a[n/2+1])/2+0.5);
	for(int i=1;i<=n;i++)
		sum+=abs(a[i]-k);
	cout<<sum;
	return 0;
}//https://abc102.contest.atcoder.jp/submissions/2783177

Compiler output:
a.cc: In function 'int main()':
a.cc:20:25: error: call of overloaded 'abs(long long unsigned int)' is ambiguous
   20 |                 sum+=abs(a[i]-k);
      |                      ~~~^~~~~~~~
In file included from /usr/include/c++/14/cstdlib:79,
                 from /usr/include/c++/14/ext/string_conversions.h:43,
                 from /usr/include/c++/14/bits/basic_string.h:4154,
                 from /usr/include/c++/14/string:54,
                 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:2:
/usr/include/stdlib.h:980:12: note: candidate: 'int abs(int)'
  980 | extern int abs (int __x) __THROW __attribute__ ((__const__)) __wur;
      |            ^~~
In file included from /usr/include/c++/14/cstdlib:81:
/usr/include/c++/14/bits/std_abs.h:137:3: note: candidate: 'constexpr __float128 std::abs(__float128)'
  137 |   abs(__float128 __x)
      |   ^~~
/usr/include/c++/14/bits/std_abs.h:85:3: note: candidate: 'constexpr __int128 std::abs(__int128)'
   85 |   abs(__GLIBCXX_TYPE_INT_N_0 __x) { return __x >= 0 ? __x : -__x; }
      |   ^~~
/usr/include/c++/14/bits/std_abs.h:79:3: note: candidate: 'constexpr long double std::abs(long double)'
   79 |   abs(long double __x)
      |   ^~~
/usr/include/c++/14/bits/std_abs.h:75:3: note: candidate: 'constexpr float std::abs(float)'
   75 |   abs(float __x)
      |   ^~~
/usr/include/c++/14/bits/std_abs.h:71:3: note: candidate: 'constexpr double std::abs(double)'
   71 |   abs(double __x)
      |   ^~~
/usr/include/c++/14/bits/std_abs.h:61:3: note: candidate: 'long long int std::abs(long long int)'
   61 |   abs(long long __x) { return __builtin_llabs (__x); }
      |   ^~~
/usr/include/c++/14/bits/std_abs.h:56:3: note: candidate: 'long int std::abs(long int)'
   56 |   abs(long __i) { return __builtin_labs(__i); }
      |   ^~~
Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
 
using namespace std;
 
int main() {
  int N;
  cin >> N;
  vector<int> A(N);
  for(int i = 0; i < N; i++) {
  	cin >> A[i];
    A[i] -= i;
  }
  sort(A.begin(), A.end());
  ll sum = 0;
  for(int i = 0; i < N; i++) {
    sum += abs(A[N / 2] - A[i]);
  }
  cout << sum << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:3: error: 'll' was not declared in this scope
   16 |   ll sum = 0;
      |   ^~
a.cc:18:5: error: 'sum' was not declared in this scope
   18 |     sum += abs(A[N / 2] - A[i]);
      |     ^~~
a.cc:20:11: error: 'sum' was not declared in this scope
   20 |   cout << sum << endl;
      |           ^~~
Language: C++

#include <iostream>
#include <vector>

using namespace std;

int main() {
  int N;
  cin >> N;
  vector<int> A(N);
  for(int i = 0; i < N; i++) {
  	cin >> A[i];
    A[i] -= i;
  }
  sort(A.begin(), A.end());
  ll sum = 0;
  for(int i = 0; i < N; i++) {
    sum += abs(A[N / 2] - A[i]);
  }
  cout << sum << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:3: error: 'sort' was not declared in this scope; did you mean 'short'?
   14 |   sort(A.begin(), A.end());
      |   ^~~~
      |   short
a.cc:15:3: error: 'll' was not declared in this scope
   15 |   ll sum = 0;
      |   ^~
a.cc:17:5: error: 'sum' was not declared in this scope
   17 |     sum += abs(A[N / 2] - A[i]);
      |     ^~~
a.cc:19:11: error: 'sum' was not declared in this scope
   19 |   cout << sum << endl;
      |           ^~~
Language: C++

// last.cpp : コンソール アプリケーションのエントリ ポイントを定義します。
//
#include<iostream>
#include <cmath>
#include <string>
#include <float.h>
using namespace std;

int main()
{
    int l;
    cin>>l;
    int* num = new int[l];
    int* hik = new int[l];
    int b = 0;
    int kanasimi=0;

    
    for (int i = 0;i<l;i++){
        cin>>num[i];
        hik[i]=num[i]-i;
    }

    sort(hik, hik+l);
    if(l%2){
        b=hik[(l-1)/2];
    }else{
        b=(hik[l/2]+hik[(l/2)-1])/2;
    }
    for(int i = 0;i<l;i++){
        kanasimi=kanasimi+abs(num[i]-i-b);
    }
    
    cout<<kanasimi;
    
    delete num;
    delete hik;
    
}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:5: error: 'sort' was not declared in this scope; did you mean 'sqrt'?
   24 |     sort(hik, hik+l);
      |     ^~~~
      |     sqrt
Language: C++

#include <iostream>
#include <vector>
#include <queue>
#include <cmath>
#include <cstdlib>
#include <cstring>
#include <string>
#include <algorithm>
#include <tuple>
#include <list>
#include <deque>
#include <stack>
#include <complex>
#include <functional>
#include <regex>
#include <map>

using namespace std;

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

const int dx[] = {0, 1, 0, -1, 1, -1, 1, -1};
const int dy[] = {1, 0, -1, 0, 1, -1, -1, 1};

using ll = long long;
using ld = long double;
using ull = unsigned long long;

const int PI = acos(-1);
const int INF = numeric_limits<int>::infinity() / 2;
const ll INFLL = numeric_limits<ll>::infinity() / 2;

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

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

  ll sum = accumulate(A.begin(), A.end(), 0);
  ll b = sum / N;

  ll kanasi1 = 0, kanasi2 = 0, kanasi3 = 0;
  rep(i, N) kanasi1 += abs<ll>(A[i] - b);
  rep(i, N) kanasi2 += abs<ll>(A[i] - (b - 1));
  rep(i, N) kanasi3 += abs<ll>(A[i] - (b + 1));

  cout << min(kanasi1, min(kanasi2, kanasi3)) << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:45:12: error: 'accumulate' was not declared in this scope
   45 |   ll sum = accumulate(A.begin(), A.end(), 0);
      |            ^~~~~~~~~~
Language: C++

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

int main()
{
  int n=0,ans=0;
  cin >> n;
  long long int a[n], temp=0, b;
  for(int i=0;i<n;++i){
    cin >> a[i];
    a[i] = a[i] - (i+1);
    temp += a[n];
  }
  sort(a, a+n);
  if(n%2==0){
    b = (a[(n/2)-1]+a[(n/2)])/2;
    int tmpans=0;
    for(int i=0;i<n;i++){
      tmpans+=abs(a[i]-b);
    }
    if(b<0) b--;
    else b++;
    for(i=0;i<n;i++){
      ans+=abs(a[i]-b);
    }
    if(ans>tmpans) ans=tmpans;
  }else{
    b = a[int(n/2)];
    for(int i=0;i<n;++i){
      ans += abs(a[i]-b);
    }
  }
  cout << ans << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:25:9: error: 'i' was not declared in this scope
   25 |     for(i=0;i<n;i++){
      |         ^
Language: C++

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

int main()
{
  int n=0,ans=0;
  cin >> n;
  long long int a[n], temp=0, b;
  for(int i=0;i<n;++i){
    cin >> a[i];
    a[i] = a[i] - (i+1);
    temp += a[n];
  }
  sort(a, a+n);
  if(n%2==0){
    b = (a[(n/2)-1]+a[(n/2)])/2;
    int tmpans=0;
    for(i=0;i<n;i++){
      tmpans+=abs(a[i]-b);
    }
    if(b<0) b--;
    else b++;
    for(i=0;i<n;i++){
      ans+=abs(a[i]-b);
    }
    if(ans>tmpans) ans=tmpans;
  }else{
    b = a[int(n/2)];
    for(int i=0;i<n;++i){
      ans += abs(a[i]-b);
    }
  }
  cout << ans << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:9: error: 'i' was not declared in this scope
   20 |     for(i=0;i<n;i++){
      |         ^
a.cc:25:9: error: 'i' was not declared in this scope
   25 |     for(i=0;i<n;i++){
      |         ^
Language: C++

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

int main()
{
  int n=0,ans=0;
  cin >> n;
  long long int a[n], temp=0, b;
  for(int i=0;i<n;++i){
    cin >> a[i];
    a[i] = a[i] - (i+1);
    temp += a[n];
  }
  sort(a);
  if(n%2==0){
    b = (a[(n/2)-1]+a[(n/2)])/2;
  }else{
    b = a[int(n/2)];
  }
  for(int i=0;i<n;++i){
    ans += abs(a[i]-b);
  }
  cout << ans << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:7: error: no matching function for call to 'sort(long long int [n])'
   16 |   sort(a);
      |   ~~~~^~~
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:3:
/usr/include/c++/14/bits/stl_algo.h:4762:5: note: candidate: 'template<class _RAIter> void std::sort(_RAIter, _RAIter)'
 4762 |     sort(_RandomAccessIterator __first, _RandomAccessIterator __last)
      |     ^~~~
/usr/include/c++/14/bits/stl_algo.h:4762:5: note:   candidate expects 2 arguments, 1 provided
/usr/include/c++/14/bits/stl_algo.h:4793:5: note: candidate: 'template<class _RAIter, class _Compare> void std::sort(_RAIter, _RAIter, _Compare)'
 4793 |     sort(_RandomAccessIterator __first, _RandomAccessIterator __last,
      |     ^~~~
/usr/include/c++/14/bits/stl_algo.h:4793:5: note:   candidate expects 3 arguments, 1 provided
In file included from /usr/include/c++/14/algorithm:86:
/usr/include/c++/14/pstl/glue_algorithm_defs.h:292:1: note: candidate: 'template<class _ExecutionPolicy, class _RandomAccessIterator, class _Compare> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void> std::sort(_ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator, _Compare)'
  292 | sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp);
      | ^~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:292:1: note:   candidate expects 4 arguments, 1 provided
/usr/include/c++/14/pstl/glue_algorithm_defs.h:296:1: note: candidate: 'template<class _ExecutionPolicy, class _RandomAccessIterator> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void> std::sort(_ExecutionPolicy&&, _RandomAccessIterator, _RandomAccessIterator)'
  296 | sort(_ExecutionPolicy&& __exec, _RandomAccessIterator __first, _RandomAccessIterator __last);
      | ^~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:296:1: note:   candidate expects 3 arguments, 1 provided
Language: C++

#include <bits/stdc++.h>
#define rep( i, n ) for( int ( i ) = 0; ( i ) < ( n ); ( i )++ )
#define repr( i, n ) for( int ( i ) = ( n ); ( i ) >= 0; ( i )-- )
#define FOR( i, m, n ) for( int ( i ) = ( m ); ( i ) < ( n ); ( i )++ )
#define all( x ) ( x ).begin(), ( x ).end()
typedef long long lint;
using namespace std;
 
int main( void ){
	
	lint n;
	cin >> n;
	lint a;
	lint ans = 0;
	lint b = 0;
	
	rep( i, n ){
		cin >> a;
		ans += ( a[ i ] - ( b + ( i + 1 ) ) );
	}
	
	cout << ans <<endl;
	
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:27: error: invalid types 'lint {aka long long int}[int]' for array subscript
   19 |                 ans += ( a[ i ] - ( b + ( i + 1 ) ) );
      |                           ^