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

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

int cost(int a[],int n,int p)
{
	if(n==1)return 0;
    int q=min(cost(p-1)+a[n-1]-a[p],cost(p-2)+a[n-1]-a[p-2]);
    return(cost( a[],n,q):
           }
int main()
{
  int n;
  cin>>n;
  int a[n];
  for(int i=0;i<n;i++)
    cin>>a[i];
  int p=cost(a,n,n-1);
  cout<<p;
}

Compiler output:
a.cc: In function 'int cost(int*, int, int)':
a.cc:7:21: error: invalid conversion from 'int' to 'int*' [-fpermissive]
    7 |     int q=min(cost(p-1)+a[n-1]-a[p],cost(p-2)+a[n-1]-a[p-2]);
      |                    ~^~
      |                     |
      |                     int
a.cc:7:19: error: too few arguments to function 'int cost(int*, int, int)'
    7 |     int q=min(cost(p-1)+a[n-1]-a[p],cost(p-2)+a[n-1]-a[p-2]);
      |               ~~~~^~~~~
a.cc:4:5: note: declared here
    4 | int cost(int a[],int n,int p)
      |     ^~~~
a.cc:7:43: error: invalid conversion from 'int' to 'int*' [-fpermissive]
    7 |     int q=min(cost(p-1)+a[n-1]-a[p],cost(p-2)+a[n-1]-a[p-2]);
      |                                          ~^~
      |                                           |
      |                                           int
a.cc:7:41: error: too few arguments to function 'int cost(int*, int, int)'
    7 |     int q=min(cost(p-1)+a[n-1]-a[p],cost(p-2)+a[n-1]-a[p-2]);
      |                                     ~~~~^~~~~
a.cc:4:5: note: declared here
    4 | int cost(int a[],int n,int p)
      |     ^~~~
a.cc:8:20: error: expected primary-expression before ']' token
    8 |     return(cost( a[],n,q):
      |                    ^
a.cc:8:26: error: expected ')' before ':' token
    8 |     return(cost( a[],n,q):
      |           ~              ^
      |                          )
a.cc:8:27: error: expected ';' before '}' token
    8 |     return(cost( a[],n,q):
      |                           ^
      |                           ;
    9 |            }
      |            ~
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];
  
  unsigned int b[n];
  b[1]=a[1]-a[0];
  b[0]=0;
  for(int i=2;i<n;i+=){
  b[i]=min(abs(a[i+1]-a[i])+b[i-1],abs(a[i+2]-a[i])+b[i-2])
  }
  cout<<b[n-1];
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:22: error: expected primary-expression before ')' token
   13 |   for(int i=2;i<n;i+=){
      |                      ^
a.cc:14:60: error: expected ';' before '}' token
   14 |   b[i]=min(abs(a[i+1]-a[i])+b[i-1],abs(a[i+2]-a[i])+b[i-2])
      |                                                            ^
      |                                                            ;
   15 |   }
      |   ~
Language: C++


#include <bits/stdc++>
int main() {
 	int n; 
  	cin>>n;
  	int h[n] = {0};
  	for(int i = 0; i < n; i++) {
     cin>>h[i]; 
    }
  	vector <int> res (n);
  	res.push_back(0);
  	res.push_back(abs(h[1] - h[0]));
  	for(int i = 2; i < n; i++) {
      int c = min((abs(h[i] - h[i - 1]) + res[i - 1]), (abs(h[i] - h[i - 2]) + res[i - 2]));
      res.push_back(c);
    }
  	cout<<res[n - 1];
  return 0;
  	
  
  
}


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

#include <iostream.h>
#include<bits/stdc++.h>
int main() {
 	int n; 
  	cin>>n;
  	int h[n] = {0};
  	for(int i = 0; i < n; i++) {
     cin>>h[i]; 
    }
  	vector <int> res (n);
  	res.push_back(0);
  	res.push_back(abs(h[1] - h[0]));
  	for(int i = 2; i < n; i++) {
      int c = min((abs(h[i] - h[i - 1]) + res[i - 1]), (abs(h[i] - h[i - 2]) + res[i - 2]));
      res.push_back(c);
    }
  	cout<<res[n - 1];
  	
  return 0;
  
}


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

#include <iostream.h>
#include <bits/stdc++.h>
int main() {
 	int n; 
  	cin>>n;
  	int h[n] = {0};
  	for(int i = 0; i < n; i++) {
     cin>>h[i]; 
    }
  	vector <int> res (n);
  	res.push_back(0);
  	res.push_back(abs(h[1] - h[0]));
  	for(int i = 2; i < n; i++) {
      int c = min((abs(h[i] - h[i - 1]) + res[i - 1]), (abs(h[i] - h[i - 2]) + res[i - 2]));
      res.push_back(c);
    }
  	return res[n - 1];
  	
  
  
}


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

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

int main(){
 int n;
  cin >> n;
  vector<int> a(n + 1), f(n + 1, 0);
  for(int i = 1; i <= n; i++){
    cin >> a[i];
  }
  f[1] = a[1];
  for(int i = 2; i <= n; i++){
   f[i] = minabs((a[i] - a[i - 1]) + f[i - 1], abs(a[i] - a[i - 2]) + f[i - 2]); 
  }
  cout << f[n];
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:11: error: 'minabs' was not declared in this scope
   13 |    f[i] = minabs((a[i] - a[i - 1]) + f[i - 1], abs(a[i] - a[i - 2]) + f[i - 2]);
      |           ^~~~~~
Language: C++

#include <bits/stdc++.h>
int main() {
 	int n; 
  	cin>>n;
  	int h[n] = {0};
  	for(int i = 0; i < n; i++) {
     cin>>h[i]; 
    }
  	vector <int> res (n);
  	res.push_back(0);
  	res.push_back(abs(h[1] - h[0]));
  	for(int i = 2; i < n; i++) {
      int c = min((abs(h[i] - h[i - 1]) + res[i - 1]), (abs(h[i] - h[i - 2]) + res[i - 2]));
      res.push_back(c);
    }
  	return res[n - 1];
  	
  
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:4:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    4 |         cin>>n;
      |         ^~~
      |         std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:9:9: error: 'vector' was not declared in this scope
    9 |         vector <int> res (n);
      |         ^~~~~~
a.cc:9:9: note: suggested alternatives:
In file included from /usr/include/c++/14/vector:66,
                 from /usr/include/c++/14/functional:64,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:53:
/usr/include/c++/14/bits/stl_vector.h:428:11: note:   'std::vector'
  428 |     class vector : protected _Vector_base<_Tp, _Alloc>
      |           ^~~~~~
/usr/include/c++/14/vector:93:13: note:   'std::pmr::vector'
   93 |       using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
      |             ^~~~~~
a.cc:9:17: error: expected primary-expression before 'int'
    9 |         vector <int> res (n);
      |                 ^~~
a.cc:10:9: error: 'res' was not declared in this scope
   10 |         res.push_back(0);
      |         ^~~
a.cc:13:15: error: 'min' was not declared in this scope; did you mean 'std::min'?
   13 |       int c = min((abs(h[i] - h[i - 1]) + res[i - 1]), (abs(h[i] - h[i - 2]) + res[i - 2]));
      |               ^~~
      |               std::min
In file included from /usr/include/c++/14/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51:
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: 'std::min' declared here
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
Language: C++

#include <bits/stdc++.h>
int main() {
 	int n; 
  	cin>>n;
  	int h[n] = {0};
  	for(int i = 0; i < n; i++) {
     cin>>h[i]; 
    }
  	vector <int> res (n);
  	res.push_back(0);
  	res.push_back(abs(h[1] - h[0]));
  	for(int i = 2; i < n; i++) {
      int c = min((abs(h[i] - h[i - 1]) + res[i - 1]), (abs(h[i] - h[i - 2]) + res[i - 2]));
      res.push_back(c);
    }
  	return res[n - 1];
  	
  
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    4 |         cin>>n;
      |         ^~~
      |         std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:9:9: error: 'vector' was not declared in this scope
    9 |         vector <int> res (n);
      |         ^~~~~~
a.cc:9:9: note: suggested alternatives:
In file included from /usr/include/c++/14/vector:66,
                 from /usr/include/c++/14/functional:64,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:53:
/usr/include/c++/14/bits/stl_vector.h:428:11: note:   'std::vector'
  428 |     class vector : protected _Vector_base<_Tp, _Alloc>
      |           ^~~~~~
/usr/include/c++/14/vector:93:13: note:   'std::pmr::vector'
   93 |       using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
      |             ^~~~~~
a.cc:9:17: error: expected primary-expression before 'int'
    9 |         vector <int> res (n);
      |                 ^~~
a.cc:10:9: error: 'res' was not declared in this scope
   10 |         res.push_back(0);
      |         ^~~
a.cc:13:15: error: 'min' was not declared in this scope; did you mean 'std::min'?
   13 |       int c = min((abs(h[i] - h[i - 1]) + res[i - 1]), (abs(h[i] - h[i - 2]) + res[i - 2]));
      |               ^~~
      |               std::min
In file included from /usr/include/c++/14/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51:
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: 'std::min' declared here
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
Language: C++

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

Compiler output:
a.cc: In function 'int main()':
a.cc:19:23: error: expected '}' at end of input
   19 |   cout<<dp[n-1]<<"\n";
      |                       ^
a.cc:4:1: note: to match this '{'
    4 | {
      | ^
Language: C++

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

Compiler output:
a.cc: In function 'int main()':
a.cc:19:18: error: expected '}' at end of input
   19 |   return dp[n-1];
      |                  ^
a.cc:4:1: note: to match this '{'
    4 | {
      | ^
Language: C++

int main()
{
  int n;
  cin>>n;
  int a[n];
  for(int i=0;i<n;i++)
  {
    cin>>a[i];
  }
  int dp[n+1];
  dp[0]=0;
  dp[1]=a[0];
  for(int i=2;i<n;i++)
  {
    dp[i]=min(dp[i-1]+abs(a[i]-a[i-1]),dp[i-1]+abs(a[i]-a[i-2]));
  }
  cout<<dp[n-1]<<"\n";

Compiler output:
a.cc: In function 'int main()':
a.cc:4:3: error: 'cin' was not declared in this scope
    4 |   cin>>n;
      |   ^~~
a.cc:15:23: error: 'abs' was not declared in this scope
   15 |     dp[i]=min(dp[i-1]+abs(a[i]-a[i-1]),dp[i-1]+abs(a[i]-a[i-2]));
      |                       ^~~
a.cc:15:11: error: 'min' was not declared in this scope; did you mean 'main'?
   15 |     dp[i]=min(dp[i-1]+abs(a[i]-a[i-1]),dp[i-1]+abs(a[i]-a[i-2]));
      |           ^~~
      |           main
a.cc:17:3: error: 'cout' was not declared in this scope
   17 |   cout<<dp[n-1]<<"\n";
      |   ^~~~
a.cc:17:23: error: expected '}' at end of input
   17 |   cout<<dp[n-1]<<"\n";
      |                       ^
a.cc:2:1: note: to match this '{'
    2 | {
      | ^
Language: C++

#include<bits/stdc++.>
using namespace std;
int main()
{
   int n;
  cin>>n;
  int arr[n];
  int vec[n];
  for(int i=0;i<n;i++)
  {
     cin>>vec[i];
  }
  arr[0] = vec[0];
  arr[1] = abs(vec[1]-vec[0]);
  arr[2] = abs(vec[2]-vec[0]);
  for(int j=3;j<n;j++)
  {
    int k = vec[i]-vec[i-1];
    int r = vec[i]-vec[i-2];
    if(k<r)
    {
      arr[i] = k+arr[i-1];
    }
    else
    {
      arr[i] = r+arr[i-2];
    }
  }
  cout<<arr[n-1]<<endl;
}

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

////////////////////////////////////
//          ,.                    //
//         (_|,.                  //
//        ,' /, )_______   _      //
//     __j o``-'        `.'-)'    //
//    (")                 \'      //
//     `-j                |       //
//        `-._(           /       //
//           |_\  |--^.  /        //
//          /_]'|_| /_)_/         //
//             /_]'  /_]'         //
//                                //
//           PIGMEISTER™          //
//                                //
////////////////////////////////////

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

#define ll long long
#define ull unsigned long long
#define mod (ll)1000000007
#define sidha(i, x, n) for(ll i=(ll)(x);i<(ll)(n);i++)
#define ulta(i, x, n) for(ll i=(ll)(x);i>=(ll)(n);i--)
#define mii map<ll, ll>
#define vi vector<ll>
#define pii pair<ll, ll>
#define pb push_back
#define mp make_pair
#define modInv(x) powah(x, mod-2)
#define test ll t;cin>>t;while(t--)
#define jaldi ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define endl '\n'
//ll powah(ll, ll);

ll dp[100005];
memset (dp, -1, sizeof(dp));

ll minCost(vi h, ll n) {
    if (dp[n] > -1) return dp[n];

    if (n == 1) return 0;
    else if (n == 2)
        dp[n] = abs(h[2] - h[1]);
    else 
        dp[n] = min(minCost(h, n-1) + abs(h[n]-h[n-1]), minCost(h, n-2) + abs(h[n]-h[n-2]));
    return dp[n];
}

int main()
{
    jaldi;
    
    ll n, a;
    cin >> n;
    vi h;
    h.pb(0);
    sidha (i, 0, n) {
        cin >> a;
        h.pb(a);
    }
    cout << minCost(h, n) << endl;
    
    return 0;
}

// ll powah(ll x, ll y) { 
//     ll res = 1;
//     x = x % mod;
//     while (y > 0) { 
//         if (y & 1) 
//             res = (res*x) % mod; 
//         y = y>>1;
//         x = (x*x) % mod; 
//     } 
//     return res; 
// }

Compiler output:
a.cc:37:8: error: expected constructor, destructor, or type conversion before '(' token
   37 | memset (dp, -1, sizeof(dp));
      |        ^
Language: C++

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

int main()
{
    int n;
    cin>>n;
    vector<int> h(n);
    int c=0;
    for(int& x : h)
    {
        cin>>x;
    }
    for(int i=0; i<n;)
    {
        if(c+abs(h[i]-h[i+1])<c+abs(h[i]-h[i+2])||i==n-2)
            {c+=abs(h[i]-h[i+1]; i++;}
        else
            {c+abs(h[i]-h[i+2]}; i+=2;}
    }
    cout<<c;
    return 0;
}

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

int N;
vector<int> ar;
int ans(int i);

int main()
{
    cin>>N;
    for(int i=0;i<N;i++)
    {
        int a;
        cin>>a;
        ar.push_back(a);
    }
    cout<<ans(0);
}


int ans(int i)
{
    if(i>=(N-1)) return abs(ar[N-1]-ar[i]);
    else
    {
        return min(abs(ar[i+1]-ar[i])+ans(i+1),abs(ar[i+2]-ar[i]+ans(i+2)));
    }   
}
*/

Compiler output:
a.cc: In function 'int main()':
a.cc:17:32: error: expected ')' before ';' token
   17 |             {c+=abs(h[i]-h[i+1]; i++;}
      |                    ~           ^
      |                                )
a.cc:19:31: error: expected ')' before '}' token
   19 |             {c+abs(h[i]-h[i+2]}; i+=2;}
      |                   ~           ^
      |                               )
a.cc: At global scope:
a.cc:21:5: error: 'cout' does not name a type
   21 |     cout<<c;
      |     ^~~~
a.cc:22:5: error: expected unqualified-id before 'return'
   22 |     return 0;
      |     ^~~~~~
a.cc:23:1: error: expected declaration before '}' token
   23 | }
      | ^
Language: Java

package AtCoder;
import java.util.*;
public class DPContest_1 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		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();
		sc.close();
		
		if(n==1)
		{
			System.out.println(0);
			return;
		}
		int[] cost=new int[n];
		//cost[0]
		cost[0]=0;
		cost[1]=Math.abs(a[1]-a[0]);
		for(int i=2;i<n;i++)
		{
			cost[i]=Math.min(Math.abs(a[i]-a[i-1])+cost[i-1], Math.abs(a[i]-a[i-2])+cost[i-2]);
			
		}
		System.out.println(cost[n-1]);

	}

}


Compiler output:
Main.java:3: error: class DPContest_1 is public, should be declared in a file named DPContest_1.java
public class DPContest_1 {
       ^
1 error
Language: Java

import java.io.*;
import java.util.*;
public class main {
	public static int n;
	public static int[] dp;
	public static int[] heights;
	public static int k;
	public static void main(String[] args) throws IOException{
		// TODO Auto-generated method stub
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st = new StringTokenizer(br.readLine());
		n = Integer.parseInt(st.nextToken());
		k = Integer.parseInt(st.nextToken());
		StringTokenizer str = new StringTokenizer(br.readLine());
		dp = new int[n];
		Arrays.fill(dp, 100000);
		dp[0] = 0;
		heights = new int[n];
		for(int i = 0; i <n; i++)
		{
			heights[i] = Integer.parseInt(str.nextToken());
		}
		build();
		System.out.println(dp[n-1]);
	}
	
	public static void build()
	{
		for(int i =1; i <k; i++){
			for(int j = 1; j <=i; j++) {
				dp[i] = Math.min(Math.abs(heights[i]-heights[i-j]) + dp[i-j], dp[i]);
			}
		}
		
		for(int i = k; i <n; i++)
		{
			for(int j = 1; j <=k; j ++)
			dp[i] = Math.min(dp[i-j] + Math.abs(heights[i]-heights[i-j]), dp[i]);
		}
	}
}


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

/*  
     author : masaow    
     g++ : 17.3.20  
*/        
#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#define forn(i,a,b)        for( i = a ; i < b  ; i++ )
#define debug(x)           cout << #x << " " << x << " -- "
#define I__O               ios::sync_with_stdio(false),cin.tie(NULL),cout.tie(NULL)
#define ll                 long long  
#define p(x) 			   cout << x << "\n" ; 
#define MOD                100000007
#define pi                 pair<int,int>
#define vi                 vector <int>
#define pb                 push_back
#define vp                 vector <pair<ll,ll>>
#define endl               cout << "\n"
#define mi                 map <int,int> 
#define f1                 first 
#define s1                 second    
#define in                 insert
#define all(x)             x.begin(),x.end() 
using namespace std ; 
using namespace __gnu_pbds;
typedef tree<int,null_type,less<int>,rb_tree_tag,
tree_order_statistics_node_update> indexed_set; 
const int N = 1e5+7;  
/*  
    time : 12 : 14    
    date : 19.01.2020
*/    
// int L,R,mid,target,idx ;
const int INF = 1e9 + 7 ;
int h[N],dp[N] ;   
int solve(int idx){
	if(idx <= 0  )
		return 0 ;  
	if(dp[idx] != -1) 
		return dp[idx]; 
	int result  = INF  ; 
	if(idx-1 >= 0 )	
	result =  min(result,abs(h[idx]-h[idx-1])+solve(idx-1)) ;
	if(idx-2 >= 0 )
	result =  min(result,abs(h[idx]-h[idx-2])+solve(idx-2)) ;
	return (dp[idx] = result) ;
}
int tests() 
{	
	int n ; 
	cin >> n ;
	forn(i,0,n+1)
		dp[i]  = -1 ; 

	int i ; 
	forn(i,0,n)
		cin >> h[i] ; 
 	cout << solve(n-1) << '\n'; 
	return 0 ; 
}
int32_t main(){
    I__O ;   
    int cases = 1 ; 
 	// cin >> cases;  
    while(cases--)
	    tests(); 
	return 0 ; 
}

Compiler output:
a.cc: In function 'int tests()':
a.cc:52:14: error: 'i' was not declared in this scope
   52 |         forn(i,0,n+1)
      |              ^
a.cc:8:33: note: in definition of macro 'forn'
    8 | #define forn(i,a,b)        for( i = a ; i < b  ; i++ )
      |                                 ^
Language: Java

/* package whatever; // don't place package name! */

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

/* Name of the class has to be "Main" only if the class is public. */
class Main
{
  	int dp[];
  	Main(int n){
      dp = new int[n];
      for(int i = 0; i < arr.length; i++) {
    dp[i] = -1;
}
    }
	public static void main (String[] args) throws java.lang.Exception
	{
      	FastReader s = new FastReader();
		int  n = s.nextInt();
		int arr[] = new int[n];
		for(int i=0;i<n;i++)
		arr[i]= s.nextInt();
		Main ob = new Main(n);
		int ans = ob.getCost(n-1,arr);
		System.out.println(ans);
	}
	int getCost(int n, int arr[]){
      	if (dp[n]!=-1) return dp[n];
		if(n==0) { 
          dp[0] = 0;
          return dp[0];
        }
		if(n==1) {
          dp[1] = Math.abs(arr[1]-arr[0]);
          return Math.abs(arr[1]-arr[0]);
        }
      	dp[n]=Math.min(Math.abs(arr[n]-arr[n-1])+getCost(n-1,arr),Math.abs(arr[n]-arr[n-2])+getCost(n-2,arr));
		return dp[n];
	}
  static class FastReader 
    { 
        BufferedReader br; 
        StringTokenizer st; 
  
        public FastReader() 
        { 
            br = new BufferedReader(new
                     InputStreamReader(System.in)); 
        } 
  
        String next() 
        { 
            while (st == null || !st.hasMoreElements()) 
            { 
                try
                { 
                    st = new StringTokenizer(br.readLine()); 
                } 
                catch (IOException  e) 
                { 
                    e.printStackTrace(); 
                } 
            } 
            return st.nextToken(); 
        } 
  
        int nextInt() 
        { 
            return Integer.parseInt(next()); 
        } 
  
        long nextLong() 
        { 
            return Long.parseLong(next()); 
        } 
  
        double nextDouble() 
        { 
            return Double.parseDouble(next()); 
        } 
  
        String nextLine() 
        { 
            String str = ""; 
            try
            { 
                str = br.readLine(); 
            } 
            catch (IOException e) 
            { 
                e.printStackTrace(); 
            } 
            return str; 
        } 
    } 
}


Compiler output:
Main.java:13: error: cannot find symbol
      for(int i = 0; i < arr.length; i++) {
                         ^
  symbol:   variable arr
  location: class Main
1 error
Language: Java

/* package whatever; // don't place package name! */

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

/* Name of the class has to be "Main" only if the class is public. */
class Main
{
  	int dp[];
  	Main(int n){
      dp = new int[n];
    }
	public static void main (String[] args) throws java.lang.Exception
	{
      	FastReader s = new FastReader();
		int  n = s.nextInt();
		int arr[] = new int[n];
		for(int i=0;i<n;i++)
		arr[i]= s.nextInt();
		Main ob = new Main(n);
      for(int i=0;i<n;i++)
        dp[i]=-1;
		int ans = ob.getCost(n-1,arr);
		System.out.println(ans);
	}
	int getCost(int n, int arr[]){
      	if (dp[n]!=-1) return dp[n];
		if(n==0) { 
          dp[0] = 0;
          return dp[0];
        }
		if(n==1) {
          dp[1] = Math.abs(arr[1]-arr[0]);
          return Math.abs(arr[1]-arr[0]);
        }
      	dp[n]=Math.min(Math.abs(arr[n]-arr[n-1])+getCost(n-1,arr),Math.abs(arr[n]-arr[n-2])+getCost(n-2,arr));
		return dp[n];
	}
  static class FastReader 
    { 
        BufferedReader br; 
        StringTokenizer st; 
  
        public FastReader() 
        { 
            br = new BufferedReader(new
                     InputStreamReader(System.in)); 
        } 
  
        String next() 
        { 
            while (st == null || !st.hasMoreElements()) 
            { 
                try
                { 
                    st = new StringTokenizer(br.readLine()); 
                } 
                catch (IOException  e) 
                { 
                    e.printStackTrace(); 
                } 
            } 
            return st.nextToken(); 
        } 
  
        int nextInt() 
        { 
            return Integer.parseInt(next()); 
        } 
  
        long nextLong() 
        { 
            return Long.parseLong(next()); 
        } 
  
        double nextDouble() 
        { 
            return Double.parseDouble(next()); 
        } 
  
        String nextLine() 
        { 
            String str = ""; 
            try
            { 
                str = br.readLine(); 
            } 
            catch (IOException e) 
            { 
                e.printStackTrace(); 
            } 
            return str; 
        } 
    } 
}


Compiler output:
Main.java:23: error: non-static variable dp cannot be referenced from a static context
        dp[i]=-1;
        ^
1 error
Language: C++

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

using ll = int;

ll dp[100005];

ll getCost(ll n, vector<in> arr){
      	if (dp[n]!=0) return dp[n];
		if(n==0) { 
          dp[0] = 0;
          return dp[0];
        }
		if(n==1) {
          dp[1] = abs(arr[1]-arr[0]);
          return abs(arr[1]-arr[0]);
        }
      	dp[n]=min(abs(arr[n]-arr[n-1])+getCost(n-1,arr),abs(arr[n]-arr[n-2])+getCost(n-2,arr));
		return dp[n];
	}

int main() {
  ll n;
  cin >> n;
  vector<int> v(n);
  for(int i = 0; i > n; i++) cin >> v[i];
  cout << getCost(n-1,v);
}

Compiler output:
a.cc:8:25: error: 'in' was not declared in this scope; did you mean 'n'?
    8 | ll getCost(ll n, vector<in> arr){
      |                         ^~
      |                         n
a.cc:8:27: error: template argument 1 is invalid
    8 | ll getCost(ll n, vector<in> arr){
      |                           ^
a.cc:8:27: error: template argument 2 is invalid
a.cc: In function 'll getCost(ll, int)':
a.cc:15:26: error: invalid types 'int[int]' for array subscript
   15 |           dp[1] = abs(arr[1]-arr[0]);
      |                          ^
a.cc:15:33: error: invalid types 'int[int]' for array subscript
   15 |           dp[1] = abs(arr[1]-arr[0]);
      |                                 ^
a.cc:16:25: error: invalid types 'int[int]' for array subscript
   16 |           return abs(arr[1]-arr[0]);
      |                         ^
a.cc:16:32: error: invalid types 'int[int]' for array subscript
   16 |           return abs(arr[1]-arr[0]);
      |                                ^
a.cc:18:26: error: invalid types 'int[ll {aka int}]' for array subscript
   18 |         dp[n]=min(abs(arr[n]-arr[n-1])+getCost(n-1,arr),abs(arr[n]-arr[n-2])+getCost(n-2,arr));
      |                          ^
a.cc:18:33: error: invalid types 'int[ll {aka int}]' for array subscript
   18 |         dp[n]=min(abs(arr[n]-arr[n-1])+getCost(n-1,arr),abs(arr[n]-arr[n-2])+getCost(n-2,arr));
      |                                 ^
a.cc:18:64: error: invalid types 'int[ll {aka int}]' for array subscript
   18 |         dp[n]=min(abs(arr[n]-arr[n-1])+getCost(n-1,arr),abs(arr[n]-arr[n-2])+getCost(n-2,arr));
      |                                                                ^
a.cc:18:71: error: invalid types 'int[ll {aka int}]' for array subscript
   18 |         dp[n]=min(abs(arr[n]-arr[n-1])+getCost(n-1,arr),abs(arr[n]-arr[n-2])+getCost(n-2,arr));
      |                                                                       ^
a.cc: In function 'int main()':
a.cc:27:23: error: cannot convert 'std::vector<int>' to 'int'
   27 |   cout << getCost(n-1,v);
      |                       ^
      |                       |
      |                       std::vector<int>
a.cc:8:29: note:   initializing argument 2 of 'll getCost(ll, int)'
    8 | ll getCost(ll n, vector<in> arr){
      |                  ~~~~~~~~~~~^~~
Language: Java

/* package whatever; // don't place package name! */

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

/* Name of the class has to be "Main" only if the class is public. */
class Main
{
  	int dp[];
  	Main(int n){
      dp = new int[n];
    }
	public static void main (String[] args) throws java.lang.Exception
	{
      	FastReader s = new FastReader();
		int  n = s.nextInt();
		int arr[] = new int[n];
		for(int i=0;i<n;i++)
		arr[i]= s.nextInt();
		Main ob = new Main(n);
		int ans = ob.getCost(n-1,arr);
		System.out.println(ans);
	}
	int getCost(int n, int arr[]){
      	if (dp[n]!=0) return dp[n];
		if(n==0) { 
          dp[0] = 4294967295;
          return dp[0];
        }
		if(n==1) {
          dp[1] = Math.abs(arr[1]-arr[0]);
          return Math.abs(arr[1]-arr[0]);
        }
      	dp[n]=Math.min(Math.abs(arr[n]-arr[n-1])+getCost(n-1,arr),Math.abs(arr[n]-arr[n-2])+getCost(n-2,arr));
		return dp[n];
	}
  static class FastReader 
    { 
        BufferedReader br; 
        StringTokenizer st; 
  
        public FastReader() 
        { 
            br = new BufferedReader(new
                     InputStreamReader(System.in)); 
        } 
  
        String next() 
        { 
            while (st == null || !st.hasMoreElements()) 
            { 
                try
                { 
                    st = new StringTokenizer(br.readLine()); 
                } 
                catch (IOException  e) 
                { 
                    e.printStackTrace(); 
                } 
            } 
            return st.nextToken(); 
        } 
  
        int nextInt() 
        { 
            return Integer.parseInt(next()); 
        } 
  
        long nextLong() 
        { 
            return Long.parseLong(next()); 
        } 
  
        double nextDouble() 
        { 
            return Double.parseDouble(next()); 
        } 
  
        String nextLine() 
        { 
            String str = ""; 
            try
            { 
                str = br.readLine(); 
            } 
            catch (IOException e) 
            { 
                e.printStackTrace(); 
            } 
            return str; 
        } 
    } 
}


Compiler output:
Main.java:28: error: integer number too large
          dp[0] = 4294967295;
                  ^
1 error
Language: Java

/* package whatever; // don't place package name! */

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

/* Name of the class has to be "Main" only if the class is public. */
class Main
{
  	int dp[];
  	Main(int n){
      dp = new int[n]
    }
	public static void main (String[] args) throws java.lang.Exception
	{
      	FastReader s = new FastReader();
		int  n = s.nextInt();
		int arr[] = new int[n];
		for(int i=0;i<n;i++)
		arr[i]= s.nextInt();
		Main ob = new Main(n);
		int ans = ob.getCost(n-1,arr);
		System.out.println(ans);
	}
	int getCost(int n, int arr[]){
      	if (dp[n]!=0) return dp[n];
		if(n==0) { 
          dp[0] = 0;
          return dp[0];
        }
		if(n==1) {
          dp[1] = Math.abs(arr[1]-arr[0]);
          return Math.abs(arr[1]-arr[0]);
        }
      	dp[n]=Math.min(Math.abs(arr[n]-arr[n-1])+getCost(n-1,arr),Math.abs(arr[n]-arr[n-2])+getCost(n-2,arr));
		return dp[n];
	}
  static class FastReader 
    { 
        BufferedReader br; 
        StringTokenizer st; 
  
        public FastReader() 
        { 
            br = new BufferedReader(new
                     InputStreamReader(System.in)); 
        } 
  
        String next() 
        { 
            while (st == null || !st.hasMoreElements()) 
            { 
                try
                { 
                    st = new StringTokenizer(br.readLine()); 
                } 
                catch (IOException  e) 
                { 
                    e.printStackTrace(); 
                } 
            } 
            return st.nextToken(); 
        } 
  
        int nextInt() 
        { 
            return Integer.parseInt(next()); 
        } 
  
        long nextLong() 
        { 
            return Long.parseLong(next()); 
        } 
  
        double nextDouble() 
        { 
            return Double.parseDouble(next()); 
        } 
  
        String nextLine() 
        { 
            String str = ""; 
            try
            { 
                str = br.readLine(); 
            } 
            catch (IOException e) 
            { 
                e.printStackTrace(); 
            } 
            return str; 
        } 
    } 
}


Compiler output:
Main.java:12: error: ';' expected
      dp = new int[n]
                     ^
1 error
Language: C++

# include<bits/stdc++.h>

using namespace std;

int main(){
	int n, oneStep, twoStep;
	scanf("%d", &n);
	int dp[n+1], weight[n+1];

	for(int i = 0; i<n; i++)
		scanf("%d", &weight[i]);

	dp[0] = 0;
	dp[1] = abs(weight[1] - weight[0])
	for(int i = 2; i<n;i++){
		oneStep = abs(weight[i] - weight[i-1]) + dp[i-1];
		twoStep = abs(weight[i] - weight[i-2]) + dp[i-2];
		if(oneStep < twoStep) dp[i] = oneStep;
		else dp[i] = twoStep;
	}
	printf("%d\n", dp[n-1]);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:43: error: expected ';' before 'for'
   14 |         dp[1] = abs(weight[1] - weight[0])
      |                                           ^
      |                                           ;
   15 |         for(int i = 2; i<n;i++){
      |         ~~~                                
a.cc:15:24: error: 'i' was not declared in this scope
   15 |         for(int i = 2; i<n;i++){
      |                        ^
Language: C++


int main()
{
	ll n;
	cin>>n;
	vector<int> a;
	for(int i=0;i<n;i++)
	{
		int x;
		cin>>x;
		a.push_back(x);
	}
	vector<int> dp(n,INT_MAX);
	dp[0] = 0;
	for(int i=0;i<n;i++)
	{
		for(int j=i+1;j<=i+2;j++)
		{
			if(j<n)
				dp[j] = min(dp[j],dp[i] + abs(a[j]-a[i]));
		}
	}
	cout<<dp[n-1];
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:9: error: 'll' was not declared in this scope
    4 |         ll n;
      |         ^~
a.cc:5:9: error: 'cin' was not declared in this scope
    5 |         cin>>n;
      |         ^~~
a.cc:5:14: error: 'n' was not declared in this scope
    5 |         cin>>n;
      |              ^
a.cc:6:9: error: 'vector' was not declared in this scope
    6 |         vector<int> a;
      |         ^~~~~~
a.cc:6:16: error: expected primary-expression before 'int'
    6 |         vector<int> a;
      |                ^~~
a.cc:11:17: error: 'a' was not declared in this scope
   11 |                 a.push_back(x);
      |                 ^
a.cc:13:16: error: expected primary-expression before 'int'
   13 |         vector<int> dp(n,INT_MAX);
      |                ^~~
a.cc:14:9: error: 'dp' was not declared in this scope
   14 |         dp[0] = 0;
      |         ^~
a.cc:20:63: error: 'a' was not declared in this scope
   20 |                                 dp[j] = min(dp[j],dp[i] + abs(a[j]-a[i]));
      |                                                               ^
a.cc:20:59: error: 'abs' was not declared in this scope
   20 |                                 dp[j] = min(dp[j],dp[i] + abs(a[j]-a[i]));
      |                                                           ^~~
a.cc:20:41: error: 'min' was not declared in this scope; did you mean 'main'?
   20 |                                 dp[j] = min(dp[j],dp[i] + abs(a[j]-a[i]));
      |                                         ^~~
      |                                         main
a.cc:23:9: error: 'cout' was not declared in this scope
   23 |         cout<<dp[n-1];
      |         ^~~~
Language: C++

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

int n,p[10009];

int solve (int i)
{
if(i==n)
  return 0;
if(i==(n-1)
  return p[i+1]-p[i];
  return min(abs(p[i+2]- p[i])+ solve(i+2)  , abs(p[i+1- p[i])+ solve(i+1));
}

int main()
{
    cin>>n;
    for(int i=1;i<=n;i++)
      cin>>p[i];
    cout<<solve(0);
}

Compiler output:
a.cc: In function 'int solve(int)':
a.cc:10:12: error: expected ';' before 'return'
   10 | if(i==(n-1)
      |            ^
      |            ;
   11 |   return p[i+1]-p[i];
      |   ~~~~~~    
a.cc:12:3: error: expected primary-expression before 'return'
   12 |   return min(abs(p[i+2]- p[i])+ solve(i+2)  , abs(p[i+1- p[i])+ solve(i+1));
      |   ^~~~~~
a.cc:11:22: error: expected ')' before 'return'
   11 |   return p[i+1]-p[i];
      |                      ^
      |                      )
   12 |   return min(abs(p[i+2]- p[i])+ solve(i+2)  , abs(p[i+1- p[i])+ solve(i+1));
      |   ~~~~~~              
a.cc:10:3: note: to match this '('
   10 | if(i==(n-1)
      |   ^
a.cc:13:1: warning: control reaches end of non-void function [-Wreturn-type]
   13 | }
      | ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n;
    cin>>n;
    long long int a[n+1];
    for(int i=1;i<=n;i++){
        cin>>a[i];
    }
    long long int dp[n+1];
    dp[1]=0;
    for(int i=2;i<=n;i++){
        int mn=INT_MAX;
        for(int j=1;j<=2;j++){
            mn=min(mn,dp[i-j]+abs(a[i]-a[i-j]));
        }
        dp[i]=mn;
    }
    cout<<dp[n];
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:19: error: no matching function for call to 'min(int&, long long int)'
   16 |             mn=min(mn,dp[i-j]+abs(a[i]-a[i-j]));
      |                ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:16:19: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   16 |             mn=min(mn,dp[i-j]+abs(a[i]-a[i-j]));
      |                ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:16:19: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   16 |             mn=min(mn,dp[i-j]+abs(a[i]-a[i-j]));
      |                ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Language: Java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class q6 {
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		String st=br.readLine();
		int N=Integer.valueOf(st);
		String[] cmd=br.readLine().split(" ");
		int[] arr=new int[N];
		for(int i=0;i<N;i++)
		{
			arr[i]=Integer.valueOf(cmd[i]);
		}
		System.out.println(minCost(arr,0,N-1));
	}

	private static int minCost(int[] arr, int i, int j) {
		// TODO Auto-generated method stub
		if(j==0)
			return 0;
		if(j==1)
			return Math.abs(arr[1]-arr[0]);
		return Math.min(Math.abs(arr[j]-arr[j-1])+minCost(arr,i,j-1), Math.abs(arr[j]-arr[j-2])+minCost(arr,i,j-2));
	}

}


Compiler output:
Main.java:4: error: class q6 is public, should be declared in a file named q6.java
public class q6 {
       ^
1 error
Language: C++

#include<bits/stdc++.h>

#define endl '\n'
#define int long long int

using namespace std;
     
int gcd(int a, int b)
{
        return b == 0 ? a : gcd(b, a%b);
}
int lcm(int a, int b)
{
        return (a*b)/gcd(a,b);
}
int ncr(int n, int k)
{
        int res = 1;
        if ( k > n - k )
            k = n - k;
     
        for (int i = 0; i < k; ++i)
        {
            res *= (n - i);
            res /= (i + 1);
        }
        return res;
}

map<int, int> dpArr;

int dp(int arr[],int n)
{
        if(n<=1)
        {
            if( n == 0) return dpArr[0];
            return dpArr[1];
        }
        if(dpArr.count(n)){
            return dpArr[n];
        }
        dpArr[n] =  dp(arr,n-1) + abs(arr[n-1] - arr[n]);
        if(n > 1) dpArr[n] = min(dpArr[n], dp(arr, n-2)+ abs(arr[n-2] - arr[n]));
        return dpArr[n];
}
     
int main()
{
        int n;
        cin >> n;
        int arr[n];
        for(int i=0; i<n; i++){
            cin >> arr[i];
        }
        dpArr[0] = 0;
        dpArr[1] = abs(arr[0] - arr[1]);
        cout << dp(arr,n-1);
     
        return 0;
    }

Compiler output:
a.cc:4:23: error: '::main' must return 'int'
    4 | #define int long long int
      |                       ^~~
a.cc:47:1: note: in expansion of macro 'int'
   47 | int main()
      | ^~~
Language: C++

#include<bits/stdc++.h>

#define endl '\n'
#define int long long int

using namespace std;
     
int gcd(int a, int b)
{
        return b == 1 ? a : gcd(b, a%b);
}
int lcm(int a, int b)
{
        return (a*b)/gcd(a,b);
}
int ncr(int n, int k)
{
        int res = 1;
        if ( k > n - k )
            k = n - k;
     
        for (int i = 0; i < k; ++i)
        {
            res *= (n - i);
            res /= (i + 1);
        }
        return res;
}

map<int, int> dpArr;

int dp(int arr[],int n)
{
        if(n<=1)
        {
            if( n == 0) return dpArr[0];
            return dpArr[1];
        }
        if(dpArr.count(n)){
            return dpArr[n];
        }
        dpArr[n] =  dp(arr,n-1) + abs(arr[n-1] - arr[n]);
        if(n > 1) dpArr[n] = min(dpArr[n], dp(arr, n-2)+ abs(arr[n-2] - arr[n]));
        return dpArr[n];
}
     
void main()
{
        int n;
        cin >> n;
        int arr[n];
        for(int i=0; i<n; i++){
            cin >> arr[i];
        }
        dpArr[0] = 0;
        dpArr[1] = abs(arr[0] - arr[1]);
        cout << dp(arr,n-1);
     
        return 0;
    }

Compiler output:
a.cc:47:1: error: '::main' must return 'int'
   47 | void main()
      | ^~~~
Language: C++

def solver():
    N = int(input())
    h = list(map(int, input().split()))
    dp = [0 for _ in range(N)]
    for i in range(1,N):
        if(i==1):
            dp[i] = dp[i-1]+abs(h[i]-h[i-1])
        else:
            dp[i] = min(dp[i-1]+abs(h[i]-h[i-1]), dp[i-2]+abs(h[i]-h[i-2]))
    print(dp[N-1])
solver()

Compiler output:
a.cc:1:1: error: 'def' does not name a type
    1 | def solver():
      | ^~~
Language: Java

import java.util.Scanner;

public class SOlution {
//    static int N;
//    static int arr[] = new int[N];
//    static int totalCost;
    public static void main(String[] args) {
        Scanner ad = new Scanner(System.in);
        int N = ad.nextInt();
        int arr[] = new int[N];
        for (int i = 0; i < N; i++) {
            arr[i] = ad.nextInt();
        }
        int myarr[] = new int[N + 1];
        int totalCost = 0;
        if( N > 2 ){

            myarr[0] = Math.abs(arr[0] - arr[1]);
            myarr[1] = Math.abs(arr[1] - arr[2]);

            for (int i = 2; i < N; i++) {
                myarr[i] = Math.min(Math.abs(myarr[i-1] - arr[i-1]),Math.abs(myarr[i-1] - arr[i-2]));
                totalCost = totalCost + myarr[i];
                //System.out.println(totalCost);
            }
            System.out.println(totalCost);
            //int totalCost = 0;
            //int s = 0;
        }
        else
            System.out.println(Math.abs(arr[0] - arr[1]));
    }
 }


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

import java.util.Scanner;

public class SOlution {
//    static int N;
//    static int arr[] = new int[N];
//    static int totalCost;
    public static void main(String[] args) {
        Scanner ad = new Scanner(System.in);
        int N = ad.nextInt();
        int arr[] = new int[N];
        for (int i = 0; i < N; i++) {
            arr[i] = ad.nextInt();
        }
        int myarr[] = new int[N + 1];
        int totalCost = 0;
        if( N > 2 ){

            myarr[0] = Math.abs(arr[0] - arr[1]);
            myarr[1] = Math.abs(arr[1] - arr[2]);

            for (int i = 2; i < N; i++) {
                myarr[i] = Math.min(Math.abs(myarr[i-1] - arr[i-1]),Math.abs(myarr[i-1] - arr[i-2]));
                totalCost = totalCost + myarr[i];
                //System.out.println(totalCost);
            }
            System.out.println(totalCost);
            //int totalCost = 0;
            //int s = 0;
        }
        else
            System.out.println(Math.abs(arr[0] - arr[1]));
    }

    static int optimizeHeight(int h0,int h1,int h2, int start){

        //totalCost = totalCost + Math.min(Math.abs(optimizeHeight(arr[start] - arr[start+1])))


         return 0;
    }
}


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

#include<bits/stdc++.h>
using namespace std;
void dfs(vector <int> adj[],int vis[],int u,int dp[])
{
  vis[u]=1;
  
  for(int i=0;i<adj[u].size();i++)
  {
  	if(vis[adj[u][i]]==0)
    {
      dfs(adj,vis,adj[u][i],dp);
    }
    dp[u]=max(dp[u],1+dp[adj[u][i]]);
  }
  
}
int main()
{
  int n;
  cin>>n;
  int e;
  cin>>e;
  
	vector <int> adj[n+1];
  for(int i=1;i<=e;i++)
  {
  	int x,y;
    cin>>x>>y;
    adj[x].push_back(y);
    adj[y].push_back(x);
  }
  int vis[n+1];
  int dp[n+1];
  memset(vis,0,sizeof(vis));
  memset(dp,0,sizeof(dis));
  for(int i=1;i<=n;i++)
  {
    if(vis[i]==0)
      dfs(adj,vis,i,dp);
  }
  int mx=INT_MIN;
  for(int i=1;i<=n;i++)
  {
    if(dp[i]>mx)
      mx=dp[i];
  }
  cout<<mx<<endl;
  return 0;
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:35:22: error: 'dis' was not declared in this scope; did you mean 'vis'?
   35 |   memset(dp,0,sizeof(dis));
      |                      ^~~
      |                      vis
Language: C

#include <stdio.h>
#include <stdlib.h>

long long int chmin(long long int a, long long int b)
{
	if (a > b)
		return b;
	else
		return a;
}


int main(int argc, char const *argv[])
{
	long long int n;
	scanf("%lld", &n);
	long long int dp[100100]; 
	long long int h[100100]; 
	for (int i = 0; i < n; i++)
	{
		dp[i] = 1000000;
		scanf("%lld", h+i);
	}
	dp[0] = 0;
	for (int i = 1; i < n; ++i)
	{
		dp[i] = chmin(dp[i], llabs(h[i] - h[i - 1]));
		if(i > 1)dp[i] = chmin(dp[i], llabs(h[i] - h[i - 2]))
	}
	printf("%lld", dp[n-1]);
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:28:70: error: expected ';' before '}' token
   28 |                 if(i > 1)dp[i] = chmin(dp[i], llabs(h[i] - h[i - 2]))
      |                                                                      ^
      |                                                                      ;
   29 |         }
      |         ~
Language: C

#include <stdio.h>
#include <stdlib.h>

long long int chmin(long long int a, long long int b)
{
	if (a > b)
		return b;
	else
		return a;
}


int main(int argc, char const *argv[])
{
	long long int n;
	scanf("%lld", &n);
	long long int dp[100100]; 
	long long int h[100100]; 
	for (int i = 0; i < n; i++)
	{
		dp[i] = 1000000;
		scanf("%lld", h+i);
	}
	dp[0] = 0;
	for (int i = 0; i < n; ++i)
	{
		dp[i + 1]=chmin(dp[i - 2] + llabs(h[i] - h[i - 2]), dp[i - 1] + llabs(h[i] - h[i - 1]));
		dp[i + 2]=chmin(dp[i - 2] + llabs(h[i] - h[i - 2]), dp[i - 1] + llabs(h[i] - h[i - 1])));
	}
	printf("%lld", dp[n-1]);
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:28:104: error: expected ';' before ')' token
   28 |                 dp[i + 2]=chmin(dp[i - 2] + llabs(h[i] - h[i - 2]), dp[i - 1] + llabs(h[i] - h[i - 1])));
      |                                                                                                        ^
      |                                                                                                        ;
main.c:28:104: error: expected statement before ')' token