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

///In the name of ALLAH

#include<bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<vi> vvi;
typedef vector<vl> vvl;
typedef pair<int,int> pii;
typedef pair<double, double> pdd;
typedef pair<ll, ll> pll;
typedef vector<pii> vii;
typedef vector<pll> vll;
typedef double dl;
 
#define PB push_back
#define F first
#define S second
#define MP make_pair
#define endl '\n'
#define all(a) (a).begin(),(a).end()
#define rall(a) (a).rbegin(),(a).rend()
#define sz(x) (int)x.size()
#define mx_int_prime 999999937
 
const double PI = acos(-1);
const double eps = 1e-9;
const int inf = 2000000000;
const ll infLL = 9000000000000000000;
#define MOD 1000000007
 
#define mem(a,b) memset(a, b, sizeof(a) )
#define gcd(a,b) __gcd(a,b)
#define sqr(a) ((a) * (a))
 
#define optimize() ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);

const int mx = 1e5+123;
int dp[mx],h[mx],n;

int solve (int i){
 if (i == n) return 0;
  
  if (dp[i] != -i) return dp[i];
  
  ret2 = inf;
  int ret1 = abs (h[i] - h[i+2]) + solve (i+1);
  
  if (i+2 <=n) ret2 = abs (h[i] - h[i+2]) + solve (i+1);
  
  return dp[i] = min(ret1 , ret2}



int main()
{
  optimize();

  cin >> n;
  for ( int i = 1; i <= n; i++ ) cin >> h[i];

  memset ( dp, -1, sizeof (dp) );
  cout << solve ( 1 ) << endl;


  return 0;
}

Compiler output:
a.cc: In function 'int solve(int)':
a.cc:48:3: error: 'ret2' was not declared in this scope
   48 |   ret2 = inf;
      |   ^~~~
a.cc:53:33: error: expected ')' before '}' token
   53 |   return dp[i] = min(ret1 , ret2}
      |                     ~           ^
      |                                 )
a.cc:53:33: error: expected ';' before '}' token
   53 |   return dp[i] = min(ret1 , ret2}
      |                                 ^
      |                                 ;
Language: C++


#include<bits/stdc++.h>
#define pb push_back
#define ll long long
using namespace std;
const int maxn=1e5+7;
vector<int> ans[maxn];
int n,k;
void rua()
{
	scanf("%d%d",&n,&k);
	if(k==1) 
	{
		printf("yes\n");
		for (int i=1;i<n;i++) printf("%d ",i);
		printf("%d\n",n); 
		return;
	}
	if(n==k) {printf("no\n");return;}
	ll sum=1ll*n*(1+n)/2;
	if(sum%k!=0) {printf("no\n");return;}
	int tmp=n/k;
	printf("yes\n");
	if(tmp%2==0)
	{
		tmp/=2;//tmp组 头+尾
		int res=1;
		for (int i=1;i<=k;i++) 
			for (int j=1;j<=tmp;j++) {ans[i].pb(res);ans[i].pb(n-res+1);res++;}
	}
	else if(tmp%2==1)
	{
		ll num=1ll*3*(3*k+1)/2;
		for (int i=1;i<=k;i++) ans[i].pb(i);
		int tt=k+1;
		for (int i=k;i>0;i-=2) ans[i].pb(tt),tt++;
		for (int i=k-1;i>0;i-=2) ans[i].pb(tt),tt++;
		for (int i=1;i<=k;i++) ans[i].pb(num-ans[i][0]-ans[i][1]);
		int kk=(tmp-3)/2,res=1;
		for (int i=1;i<=k;i++)
			for (int j=1;j<=kk;j++) {ans[i].pb(3*k+res);ans[i].pb(n-res+1);res++;}
	}
	for (int i=1;i<=k;i++)
	{
		for (int j=0;j<ans[i].size()-1;j++) printf("%d ",ans[i][j]);
		printf("%d\n",ans[i][ans[i].size()-1]);
	}
	for (int i=0;i<=k;i++) ans[i].clear();
	return;
}
int main()
{
	int t;scanf("%d",&t);
	while (t--) rua();
	return 0;



Compiler output:
a.cc: In function 'int main()':
a.cc:55:18: error: expected '}' at end of input
   55 |         return 0;
      |                  ^
a.cc:52:1: note: to match this '{'
   52 | {
      | ^
Language: C++

#include <vector>
#include <iostream>
#include <queue>
#include <cmath>

using namespace std;

int getCost(int h1, int h2);

/*
 * Source: https://atcoder.jp/contests/dp/tasks/dp_a
 *
 * Description:
 *      There are N stones, numbered 1,2,...,N. For each i (1 <= i <= N), the height of stone
 *      i is h\i.
 *
 *      There is a frog who is initially on stone 1. He will repeat the following action
 *      some number of times to reach Stone N:
 *      	- If the frog is currently on stone i, jump to stone i+1 or stone i+2. Here, a
 *      	cost of |h\i - h\j| is incurred, where j is the stone to land on.
 * 
 * 		- This means the frog can only jump to i+1 or i+2
 *
 *      Find the minimum possible total cost incurred before the frog reaches stone N.
 *
 * Constraints:
 * 	- All values in input are integers
 * 	- 2 <= N <= 10^5
 * 	- 1 <= h\i <= 10^4
 * 
 */
int hopCost(int target, vector<int> heights)
{
	// cannot find path to node not in `heights`
	if (heights.size() < (size_t)target) {
		return -1;
	}

	queue<pair<int, int> > q;
	int goal = target - 1; // use 0-based index
	int idx = 0;
	while (idx <= goal) {
		if (idx + 1 == goal) {
			q.push(make_pair(idx + 1, getCost(heights[idx], heights[idx + 1])));
			break;
		}

		if (idx + 2 == goal) {
			q.push(make_pair(idx + 2, getCost(heights[idx], heights[idx + 2])));
			break;
		}

		// expand the hop cost for the immediate neighbors of the candidate
		int c1 = getCost(heights[idx + 1], heights[idx + 2]) + getCost(heights[idx + 1], heights[idx + 3]);
		int c2 = getCost(heights[idx + 2], heights[idx + 3]) + getCost(heights[idx + 2], heights[idx + 4]);

		// choose the candidate with the lowest cost
		if (c1 < c2) {
			// move to idx+1
			q.push(make_pair(idx + 1, getCost(heights[idx], heights[idx + 1])));
			idx += 1;
		} else {
			// move to idx+2
			q.push(make_pair(idx + 2, getCost(heights[idx], heights[idx + 2])));
			idx += 2;
		}
	}

	// sum up total hop cost
	int totalCost = 0;
	while (q.size() > 0) {
		pair<int, int> node = q.front();
		q.pop();
		int cost = node.second;
		totalCost += cost;
	}

	return totalCost;
}

int getCost(int h1, int h2)
{
	int cost = abs(h1 - h2);
	return cost;
}

Compiler output:
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

#include <vector>
#include <iostream>
#include <queue>
#include <cmath>

using namespace std;

int getCost(int h1, int h2);

/*
 * Source: https://atcoder.jp/contests/dp/tasks/dp_a
 *
 * Description:
 *      There are N stones, numbered 1,2,...,N. For each i (1 <= i <= N), the height of stone
 *      i is h\i.
 *
 *      There is a frog who is initially on stone 1. He will repeat the following action
 *      some number of times to reach Stone N:
 *      	- If the frog is currently on stone i, jump to stone i+1 or stone i+2. Here, a
 *      	cost of |h\i - h\j| is incurred, where j is the stone to land on.
 * 
 * 		- This means the frog can only jump to i+1 or i+2
 *
 *      Find the minimum possible total cost incurred before the frog reaches stone N.
 *
 * Constraints:
 * 	- All values in input are integers
 * 	- 2 <= N <= 10^5
 * 	- 1 <= h\i <= 10^4
 * 
 */
int hopCost(int target, vector<int> heights)
{
	// cannot find path to node not in `heights`
	if (heights.size() < target) {
		return -1;
	}

	queue<pair<int, int> > q;
	int goal = target - 1; // use 0-based index
	int idx = 0;
	while (idx <= goal) {
		if (idx + 1 == goal) {
			q.push(make_pair(idx + 1, getCost(heights[idx], heights[idx + 1])));
			break;
		}

		if (idx + 2 == goal) {
			q.push(make_pair(idx + 2, getCost(heights[idx], heights[idx + 2])));
			break;
		}

		// expand the hop cost for the immediate neighbors of the candidate
		int c1 = getCost(heights[idx + 1], heights[idx + 2]) + getCost(heights[idx + 1], heights[idx + 3]);
		int c2 = getCost(heights[idx + 2], heights[idx + 3]) + getCost(heights[idx + 2], heights[idx + 4]);

		// choose the candidate with the lowest cost
		if (c1 < c2) {
			// move to idx+1
			q.push(make_pair(idx + 1, getCost(heights[idx], heights[idx + 1])));
			idx += 1;
		} else {
			// move to idx+2
			q.push(make_pair(idx + 2, getCost(heights[idx], heights[idx + 2])));
			idx += 2;
		}
	}

	// sum up total hop cost
	int totalCost = 0;
	while (q.size() > 0) {
		pair<int, int> node = q.front();
		q.pop();
		int cost = node.second;
		totalCost += cost;
	}

	return totalCost;
}

int getCost(int h1, int h2)
{
	int cost = abs(h1 - h2);
	return cost;
}

Compiler output:
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define int long long 
#define pb              push_back
#define mp              make_pair
#define pii             pair<int,int>
#define vi              vector<int>
#define mii             map<int,int>
#define pqb             priority_queue<int>
#define pqs             priority_queue<int,vi,greater<int> >
#define setbits(x)      __builtin_popcountll(x)
#define zrobits(x)      __builtin_ctzll(x)
#define vi vector<int>
#define mod 1000000007
#define tc(t) 			int t;cin >> t;while(t--)
#define for0(i , n)		for(int i=0;i<n;i++)
#define loop(i , a, b)	for(int i=a;i<=b;i++)
#define endl '\n'

vector<int> dp(n+1,-1);

int forgA(int ind , int n, int a[]){
	if(ind == n-1){
		return 0;
	}

	if(dp[ind] != -1){
		return dp[ind];
	}

	int c1 = abs(a[ind+1] - a[ind]) + forgA(ind+1,n,a);
	int c2 = INT_MAX;
	if(ind+2 <= n-1){
		c2 = abs(a[ind+2]-a[ind]) + forgA(ind+2,n,a);
	}

	return dp[ind] = min(c1,c2);
}

signed main() {

	ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
#ifndef ONLINE_JUDGE
	freopen("input.txt" , "r" , stdin);
	freopen("output.txt" , "w" , stdout);
#endif

	int n;
	cin >> n;
	int a[n];

	for0(i,n){
		cin >> a[i];
	}

	cout << forgA(0,n,a) << endl;
	return 0;
}

Compiler output:
a.cc:20:16: error: 'n' was not declared in this scope; did you mean 'yn'?
   20 | vector<int> dp(n+1,-1);
      |                ^
      |                yn
Language: C++

#include<iostream>

using namespace std;

#define ll long long int

ll matrix[100005];

ll h[100005];

ll func(ll i)

{

    if(i==0) return 0;

    else if (i==1) return abs(h[1]-h[0]) ;

    else

    {

        if(matrix[i-2]==-1)

        matrix[i-2]=func(i-2);

        if(matrix[i-1]==-1)

        matrix[i-1]=func(i-1);

        matrix[i]=min(matrix[i-2]+abs(h[i]-h[i-2]),matrix[i-1]+abs(h[i]-h[i-1])) ;       

        return matrix[i];

     }

}

int main()

{

    //cout << "Hello,World!\n";

    memset(matrix,-1,sizeof(matrix));

    ll n;

    cin>>n;

    for(ll i=0;i<n;i++)

    cin>>h[i];

    cout<<func(n-1);

    return 0;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:45:5: error: 'memset' was not declared in this scope
   45 |     memset(matrix,-1,sizeof(matrix));
      |     ^~~~~~
a.cc:2:1: note: 'memset' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    1 | #include<iostream>
  +++ |+#include <cstring>
    2 |
Language: C++

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

bool findWinner(int n, vector < int > &choices) {
  int k = choices.size();
  vector < vector < bool > > dp(k + 1, vector < bool >(n + 1, false));
  dp[0][0] = true;
  for (int i = 1; i < k + 1; i++) {
    for (int j = 1; j < n + 1; j++) {
      if (j >= choices[i - 1]) {
        dp[i][j] = max(dp[i][j], !(dp[i][j - choices[i - 1]]));
      }
      dp[i][j] = dp[i][j] || dp[i - 1][j];
    }
  }

  // for (int i = 0; i < k + 1; i++) {
  //   for (int j = 0; j < n + 1; j++) {
  //     cout<<dp[i][j]<<" ";
  //   }
  //   cout<<endl;
  // }

  return dp[k][n];
}

int main() {
  int n;
  int k;
  cin>>k;
  cin>>n;
  vector < int > choices(k);
  for (int i = 0; i < k; i++) {
    cin>>choices[i];
  }

  bool result = findWinner(n, choices);
  if (result == true) {
    cout<<"First"<<endl;
  } else {
    cout<<"Second"<<endl;
  }
  return 0;
}


Compiler output:
a.cc: In function 'bool findWinner(int, std::vector<int>&)':
a.cc:11:23: error: no matching function for call to 'max(std::vector<bool>::reference, bool)'
   11 |         dp[i][j] = max(dp[i][j], !(dp[i][j - choices[i - 1]]));
      |                    ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:11:23: note:   deduced conflicting types for parameter 'const _Tp' ('std::_Bit_reference' and 'bool')
   11 |         dp[i][j] = max(dp[i][j], !(dp[i][j - choices[i - 1]]));
      |                    ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: 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:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:11:23: note:   'std::_Bit_reference' is not derived from 'std::initializer_list<_Tp>'
   11 |         dp[i][j] = max(dp[i][j], !(dp[i][j - choices[i - 1]]));
      |                    ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Language: C

#include <cstdio>
#include <vector>
#include <cstring>

unsigned long long mod = 1000000007;
unsigned long long dp[1005][1005];
char matrix[1005][1005];
int h;
int w;

unsigned long long countPaths(int row, int col) {
    //std :: cerr << row << ' ' << col << '\n';
    if(row == h || col == w) return 0;
    if(matrix[row][col] == '#') return 0;
    if(row == h - 1 && col == w - 1) return 1;

    if(!dp[row][col])
        dp[row][col] = (countPaths(row + 1, col) + countPaths(row, col + 1)) % mod;

    //std :: cerr << row << ' ' << col << '\n';
    return dp[row][col] % mod;
}

int main() {
    scanf("%d", &h);
    scanf("%d", &w);

    memset(dp, 0, 1005);

    for(int i = 0 ; i < h ; i++) {
        scanf("%s", matrix[i]);
    }

    long long ret = countPaths(0 , 0);

    printf("%d", ret);
}

Compiler output:
main.c:1:10: fatal error: cstdio: No such file or directory
    1 | #include <cstdio>
      |          ^~~~~~~~
compilation terminated.
Language: C

#include <bits/stdc++.h>

using namespace std;

#define endl '\n'

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

  int n;
  cin >> n;
  vector<int> stones(n);
  vector<int> dp(n);
  for (int i = 0; i < n; i++) {
    cin >> stones[i];
  }
  dp[0] = 0;
  dp[1] = abs(stones[0] - stones[1]);
  for (int i = 2; i < n; i++) {
    dp[i] = min(dp[i - 1] + abs(stones[i] - stones[i - 1]), dp[i - 2] + abs(stones[i] - stones[i - 2]));
  }
  cout << dp[n - 1] << endl;

	return 0;
}

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

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

int main()
{
  long long n,k;
  cin>>n>>k;
  vector<long long> arr(n);
  for(int i=0;i<n;i++)
    cin>>arr[i];
  vector<vector<bool>> dp(n+1,vector<bool>(k+1,false));
  for(int i=1;i<=n;i++)
  {
      for(int j=1;j<=k;j++)
      {
          if(j<arr[i-1])
          dp[i][j]=dp[i-1][j];
          else
          dp[i][j]=!dp[i][j-arr[i-1];
      }
  }
    if(dp[n][k]) cout<<"First"<<endl;
    else
    cout<<"Second"<<endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:20:37: error: expected ']' before ';' token
   20 |           dp[i][j]=!dp[i][j-arr[i-1];
      |                                     ^
      |                                     ]
Language: C

#include <bits/stdc++.h>
void definitions(){
#define ll long long
#define vec vector
#define dl double
#define pi pair  < int , int >
#define pl pair < ll , ll >
#define files_mode freopen("input.txt", "r", stdin);freopen("output.txt", "w", stdout);
#define fl float
#define PAIR make_pair#000000
#define INF 1e9
#define fastIO ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
}
using namespace std;
/******************* This Code was written by : Omar Al-Jarrah ********************/
int n , arr[(int)1e5 + 1] , dp[(int)1e5 + 1];
int solve(int i){
    if (i == n - 1) return 0;
    if (i >= n) return 1e9;
    int dp1 = solve(i + 1) + abs(arr[i] - arr[i + 1]);
    int dp2 = solve(i + 2) + abs(arr[i] - arr[i + 2]);
    return dp[i] = min(dp1 , dp2);
}

int main() {definitions();fastIO
    cin >> n;
    for (int  i = 0 ; i < n ; i ++) cin >> arr[i];
    cout << solve(0) << endl;
return 0;}


Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

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

const INF = 1e9+7

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

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

	vector<int> dp(n,INF)
	dp[0] = 0;
	dp[1] = abs(h[1]-h[0])
	//dp[i] is min cost to reach i 

	for(int i=2;i<n;i++){
		dp[i] = min(dp[i-1]+abs(h[i]-h[i-1]), dp[i-2]+abs(h[i]-h[i-2]));
	}

	cout<<dp[n-1]<<"\n"

	return 0;
}

Compiler output:
a.cc:2:20: error: expected ';' before 'const'
    2 | using namespace std
      |                    ^
      |                    ;
    3 | 
    4 | const INF = 1e9+7
      | ~~~~~               
a.cc:4:7: error: 'INF' does not name a type
    4 | const INF = 1e9+7
      |       ^~~
Language: Java

import java.util.Collections;
import java.util.StringTokenizer;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;

public class frog{
	public static void main(String[] args) {
		Reader rd = new Reader();
		int n = rd.nextInt();
		int[] h = new int[n+1];
		h[0] = 0;
		for(int i=1; i<=n; i++){
			h[i] = rd.nextInt();
		}
		int[] dp = new int[n+1];
		dp[0] = 0;
		dp[1] = 0;
		dp[2] = Math.abs(h[2] - h[1]);
		for(int i=3; i<=n; i++){
			dp[i] = (int)Math.min(dp[i-1] + Math.abs(h[i] - h[i-1]) , dp[i-2] + Math.abs(h[i]-h[i-2]));
		}
		//System.out.println(Arrays.toString(h));
		//System.out.println(Arrays.toString(dp));
		System.out.println(dp[n]);
	}
}

class Reader { 
	static BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
	static StringTokenizer tok = new StringTokenizer("");
	static String next() {
		while(!tok.hasMoreTokens()){
			try{
				tok = new StringTokenizer(bf.readLine());
			}
			catch(IOException e) {
				e.printStackTrace();
			}
		}
		return tok.nextToken();
	} 
	static int nextInt() {
		return Integer.parseInt(next());
	}
}


Compiler output:
Main.java:9: error: class frog is public, should be declared in a file named frog.java
public class frog{
       ^
1 error
Language: C++

#include<bits/stdc++.h>
using namespace std;
int frog(std::vector<int> v,int n,int k)
{
    int dp[100001] = {0};
    dp[0] = 0;
    dp[1] = abs(v[0]-v[1]);
    for(int i=2;i<=n;i++)
    {
        int ans = INT_MAX;
        for(int j=1;j<=k;j++)
        {
            if((i-j)>0)
            {
                int a1 = dp[i-j] + abs(v[i]-v[i-j]);
            }
            else
            {
                continue;
            }
            ans = min(ans,a1);
        }

        dp[i] = ans;
    }

    return dp[n-1];

}
int main()
{
    int n;
    cin>>n;
    int k;
    cin>>k;
    std::vector<int> v;
    for(int i=0;i<n;i++)
    {
        int a;
        cin>>a;
        v.push_back(a);
    }

    int ans = frog(v,n,k);
    cout<<ans<<endl;
    return 0;
}

Compiler output:
a.cc: In function 'int frog(std::vector<int>, int, int)':
a.cc:21:27: error: 'a1' was not declared in this scope; did you mean 'y1'?
   21 |             ans = min(ans,a1);
      |                           ^~
      |                           y1
Language: C++

#include "bits/stdc++.h"

using namespace std;

/* macro */
#define rep(i,a,b) for(int i=a;i<b;i++)
#define revrep(i,a,b) for(int i = a; i > b; i--)
#define int long long
#define exist(s,e) ((s).find(e)!=(s).end())
#define all(v) (v).begin(), (v).end()
#define each(s,itr) for(auto (itr) = s.begin(); (itr) != s.end(); (itr)++)
#define sum(v) accumulate(all(v), (0LL))
#define isin(a, b, c) (b <= a && a <= c)
#define println cout << "\n";
#define sz(v) (int)v.size()
#define bin(x) static_cast<bitset<16> >(x)



/* alias */
template<class T> using vec = vector<T>;
typedef vector<int> vi;
typedef pair<int, int> pi;
typedef tuple<int, int, int> ti;
typedef map<int, int> mi;
typedef set<int> si;


/* constant */
const int inf = 1LL << 62;
const int mod = 1e9 + 7;
const int dx[8]={1,0,-1,0,-1,1,-1,1};
const int dy[8]={0,1,0,-1,-1,-1,1,1};
const string alphabet = "abcdefghijklmnopqrstuvwxyz";

/* io_method */
int input(){int tmp;cin >> tmp;return tmp;}
string raw_input(){string tmp;cin >> tmp;return tmp;}
template<class T> void printx(T n){cout << n;}
template<class T, class U> void printx(pair<T, U> p){cout << "(" << p.first << "," << p.second << ")";}
template<class T, class U, class V> void printx(tuple<T, U, V> t){cout << "{" << get<0>(t) << "," << get<1>(t) <<"," << get<2>(t) << "}" << endl;}
template<class T> void printx(vector<T> v){cout << "{";rep(i,0,v.size()){printx(v[i]);if(i != v.size()-1)printx(",");}cout << "}";}
template<class T> void print(T n){printx(n);cout << endl;}
template<class T> void print(set<T> s){cout << "{";each(s, e){if(e != s.begin()) printx(",");printx(*e);}cout << "}" << endl;}
template<class T, class U> void print(map<T, U> mp){cout << "{";each(mp, e){cout << "(" << e -> first << "," << e -> second << ")";}cout << "}" << endl;}
template<class T> void printans(vec<T> v){rep(i,0,sz(v)){cout << v[i] << (i == sz(v) - 1 ? "" : " ");}cout << endl;}


/* general_method */
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }
template<class T>T cut(T &a, int l, int r){return T(a.begin()+l, a.begin()+r);}

/* main */


int n;
vector<int> height;

void in(){
	cin >> n;
	for(int i = 0; i < n; i++ ) {
		int t;
		cin >> t;
		height.push_back(t);
	}
}


int memo[n];

int dfs(int i) { //足場iにいるときの、N-1に到達するまでのそれ以降の最小コスト
	
	if(i == n - 1) {
		return 0;
	}

	if(memo[i] != -1) return memo[i];

	int ans = inf;

	chmin(ans, abs(height[i] - height[i + 1]) + dfs(i + 1));//次の足場に行くときのコスト

	if(i <= n - 1 - 2) { //次の次の足場に行くコスト
		chmin(ans, abs(height[i] - height[i + 2]) + dfs(i + 2));
	}

	return memo[i] = ans;

}

void solve(){
	memset(memo, -1, sizeof(memo));
	print(dfs(0));


}

signed main(){

	cin.tie(0);
	ios::sync_with_stdio(false);
	in();
	solve();

}

Compiler output:
a.cc:70:10: error: size of array 'memo' is not an integral constant-expression
   70 | int memo[n];
      |          ^
Language: C++

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

int main() {
	int n;cin>>n;
	vector<int> height(n);
	for(int i=0;i<n;i++){
		cin>>height[i];
	}
	int prev1=0,prev2=height0[1]-height[0];
	int cur=0;
	for(int i=2; i < n; i++){
		cur = min(abs(height[i]-height[i-2])+prev1, abs(height[i]-height[i-1])+prev2);
		prev1 = prev2;
		prev2 = cur;
	}
	cout<<prev2<<endl;
	
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:27: error: 'height0' was not declared in this scope; did you mean 'height'?
   10 |         int prev1=0,prev2=height0[1]-height[0];
      |                           ^~~~~~~
      |                           height
Language: C

#include <iostream>
#include<vector>
using namespace std;
int main() 
{
    int n;
    cin>>n;
    vector<int>v;
    for(int i=0;i<n;i++)
    {
        int x;
        cin>>x;
        v.push_back(x);
    }
    int dp[100000];
    dp[0]=0;
    dp[1]=abs(v[0]-v[1]);
    for(int i=2;i<n;i++)
    {
        dp[i]=min( abs(v[i]-v[i-2])+dp[i-2] , abs(v[i]-v[i-1])+dp[i-1] );
    }
    cout<<dp[n-1];
}


Compiler output:
main.c:1:10: fatal error: iostream: No such file or directory
    1 | #include <iostream>
      |          ^~~~~~~~~~
compilation terminated.
Language: Java

import java.util.*;

public class hackerEarth{
  public static int dp[]=new int[100001];
  public static int go(int a[],int i){
    if(i==a.length-1)
    {
      return 0;
    }
    if(i>a.length-1)
    {
      return 100000;
    }
    if(dp[i]!=-1)
    return dp[i];
    int one=10000,two=10000;
    if(i+1<=a.length-1)
    one=Math.abs(a[i]-a[i+1])+go(a,i+1);
    if(i+2<=a.length-1)
    two=Math.abs(a[i]-a[i+2])+go(a,i+2);
    dp[i]=Math.min(one,two);
    return dp[i];
  }
  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++){
    dp[i]=-1;
    a[i]=sc.nextInt();
    }
    dp[n]=-1;
    System.out.print(go(a,0));
  }
}

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

import java.util.*;

public class Solution{
  public static int dp[]=new int[100001];
  public static int go(int a[],int i){
    if(i==a.length-1)
    {
      return 0;
    }
    if(i>a.length-1)
    {
      return 100000;
    }
    if(dp[i]!=-1)
    return dp[i];
    int one=10000,two=10000;
    if(i+1<=a.length-1)
    one=Math.abs(a[i]-a[i+1])+go(a,i+1);
    if(i+2<=a.length-1)
    two=Math.abs(a[i]-a[i+2])+go(a,i+2);
    dp[i]=Math.min(one,two);
    return dp[i];
  }
  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++){
    dp[i]=-1;
    a[i]=sc.nextInt();
    }
    dp[n]=-1;
    System.out.print(go(a,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;

int main(){
  int n;
  cin >> n;
  int a[n];
  int dp[n];
  dp[0]=0,dp[1]=0;
  for(int i=0;i<n;i++) cin >> a[i];
 for(int i=2;i<=n;i++){
  if(i==2)
    t1=abs(a[i-1]-a[i-2]);
    dp[i]=abs(t1-dp[i-1]);
      else{
        t1=abs(a[i-1]-a[i-2]);
   t2=abs(a[i-1]-a[i-3]);
    dp[i]=min(t1+dp[i-1],t2+dp[i-2]);
      }
 }
  cout << dp[n] << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:5: error: 't1' was not declared in this scope; did you mean 'y1'?
   13 |     t1=abs(a[i-1]-a[i-2]);
      |     ^~
      |     y1
a.cc:14:15: error: 't1' was not declared in this scope; did you mean 'y1'?
   14 |     dp[i]=abs(t1-dp[i-1]);
      |               ^~
      |               y1
a.cc:15:7: error: 'else' without a previous 'if'
   15 |       else{
      |       ^~~~
a.cc:17:4: error: 't2' was not declared in this scope; did you mean 'tm'?
   17 |    t2=abs(a[i-1]-a[i-3]);
      |    ^~
      |    tm
Language: C++

#include <bits/stdc++.h>
#define rep(i,x,n) for(int i=x;i#define repd(i,x,n) for(int i=x;i<=n;i++)
#define pii pair
#define pll pair
#define gbtb ios::sync_with_stdio(false),cin.tie(0),cout.tie(0)
#define MS0(X) memset((X), 0, sizeof((X)))
#define MSC0(X) memset((X), '\0', sizeof((X)))
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define gg(x) getInt(&x)
using namespace std;
typedef long long ll;
inline void getInt(int* p);
const int maxn=1000010;
const int inf=0x3f3f3f3f;
/*** TEMPLATE CODE * * STARTS HERE ***/
ll n;
ll dp[maxn];
ll a[maxn];
int main()
{
    gbtb;
    cin>>n;
    repd(i,1,n)
    {
        cin>>a[i];
    }
    dp[1]=0;
    dp[0]=0;
    dp[2]=abs(a[2]-a[1]);
    repd(i,3,n)
    {
        dp[i]=min(dp[i-2]+abs(a[i]-a[i-2]),dp[i-1]+abs(a[i]-a[i-1]));

    }
    cout<<dp[n];
    return 0;
}

inline void getInt(int* p) {
    char ch;
    do {
        ch = getchar();
    } while (ch == ' ' || ch == '\n');
    if (ch == '-') {
        *p = -(getchar() - '0');
        while ((ch = getchar()) >= '0' && ch <= '9') {
            *p = *p * 10 - ch + '0';
        }
    }
    else {
        *p = ch - '0';
        while ((ch = getchar()) >= '0' && ch <= '9') {
            *p = *p * 10 + ch - '0';
        }
    }
}

Compiler output:
a.cc:2:18: error: '#' is not followed by a macro parameter
    2 | #define rep(i,x,n) for(int i=x;i#define repd(i,x,n) for(int i=x;i<=n;i++)
      |                  ^
a.cc: In function 'int main()':
a.cc:26:10: error: 'i' was not declared in this scope
   26 |     repd(i,1,n)
      |          ^
a.cc:26:5: error: 'repd' was not declared in this scope; did you mean 'read'?
   26 |     repd(i,1,n)
      |     ^~~~
      |     read
Language: C++

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

#define M 100005
#define MOD 1000000007
#define PI 3.14159265358979323846
#define ep emplace_back
#define mk make_pair
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()

typedef long long int lli;
typedef unsigned long long int ulli;
typedef pair<int,int> PII;
typedef pair<lli,lli> PLL;

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

//    freopen("input.txt","r",stdin);

    int n;
    cin>>n;

    vector<lli> v(n);
    for(int i=0;i<n;i++)
        cin>>v[i];

    vector<lli> dp(n,0);
    dp[0] = 0;
    dp[1] = dp[0] + abs(v[1]-v[0]);

    for(int i=2;i<n;i++)
        dp[i] = min(dp[i-1]+abs(v[i]-v[i-1]),dp[i-2]+abs(v[i]-v[i-2]));

    cout<<dp[n-1]<<"\n";
}

Compiler output:
a.cc:19:1: error: extended character   is not valid in an identifier
   19 |     ios_base::sync_with_stdio(false);
      | ^
a.cc:19:1: error: extended character   is not valid in an identifier
a.cc:19:1: error: extended character   is not valid in an identifier
a.cc:19:1: error: extended character   is not valid in an identifier
a.cc:20:1: error: extended character   is not valid in an identifier
   20 |     cin.tie(NULL);
      | ^
a.cc:20:1: error: extended character   is not valid in an identifier
a.cc:20:1: error: extended character   is not valid in an identifier
a.cc:20:1: error: extended character   is not valid in an identifier
a.cc: In function 'int main()':
a.cc:19:1: error: '\U000000a0\U000000a0\U000000a0\U000000a0ios_base' has not been declared
   19 |     ios_base::sync_with_stdio(false);
      | ^~~~~~~~~~~~
a.cc:20:1: error: '\U000000a0\U000000a0\U000000a0\U000000a0cin' was not declared in this scope
   20 |     cin.tie(NULL);
      | ^~~~~~~
Language: C++

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

int frog(long int i, int h[])
{
   long int i;
   if(n==1)
     return 0;
   else if(n==2)
     return abs(h[2]-h[1]);

   int a=abs(h[n-1]-h[n]);
   int b=abs(h[n-2]-h[n]);

   int m=min(a,b);
   if(m==a)
     i--;
   else
     i=i-2;

   return m+frog(i,h);
 }
int main()
{long int n, i;
 cin>>n;
 int h[n+1];
 h[0]={0};
 for(i=1 ; i<=n ; i++)
   cin>>h[i];

 cout<<frog(n, h);

 return 0;
}

Compiler output:
a.cc: In function 'int frog(long int, int*)':
a.cc:6:13: error: declaration of 'long int i' shadows a parameter
    6 |    long int i;
      |             ^
a.cc:4:19: note: 'long int i' previously declared here
    4 | int frog(long int i, int h[])
      |          ~~~~~~~~~^
a.cc:7:7: error: 'n' was not declared in this scope
    7 |    if(n==1)
      |       ^
a.cc:12:16: error: 'n' was not declared in this scope
   12 |    int a=abs(h[n-1]-h[n]);
      |                ^
Language: C++

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

int frog(long int n, int h[])
{
  int dp[n+1]={0);
  
  for(i=2 ; i<=n ; i++)
  {
    int op1=abs(dp[i]-dp[i-1])+dp[i-1];
    int op2= i==2 ? pow(10,9) : abs(dp[i]-dp[i-2])+dp[i-2];
    dp[i]=min(op1, op2);
}
    return dp[n];
              }
int main()
{long int n, i;
 cin>>n;
 int h[n+1];
 h[0]={0};
 for(i=1 ; i<=n ; i++)
   cin>>h[i];

 cout<<frog(n, h);

 return 0;
}


Compiler output:
a.cc: In function 'int frog(long int, int*)':
a.cc:6:17: error: expected '}' before ')' token
    6 |   int dp[n+1]={0);
      |               ~ ^
a.cc:6:17: error: expected ',' or ';' before ')' token
a.cc:8:7: error: 'i' was not declared in this scope
    8 |   for(i=2 ; i<=n ; i++)
      |       ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
 
int frog(long int n, int h[])
{
   long int i;
   if(n==2)
   {
     int a=h[2]-h[1];
     if(a<0)
     a=a*(-1);
     return a;
   }
  else if(n==3)
  {
    int a=h[3]-h[1];
     if(a<0)
     a=a*(-1);
     return a;
  }
 
   int a=h[n-1]-h[n];
   if(a<0)
     a=a*(-1);
   int b=h[n-2]-h[n];
   if(b<0)
     b=b*(-1);
 
   int m=min(a,b);
   if(m==a)
     i=n-1;
   else
     i=n-2;
 
   return m+frog(i,h,dp);
 }
int main()
{long int n, i;
 cin>>n;
 int h[n+1];
 h[0]={0};
 for(i=1 ; i<=n ; i++)
   cin>>h[i];
 
 cout<<frog(n, h);
 
 return 0;
}

Compiler output:
a.cc: In function 'int frog(long int, int*)':
a.cc:35:22: error: 'dp' was not declared in this scope; did you mean 'dup'?
   35 |    return m+frog(i,h,dp);
      |                      ^~
      |                      dup
Language: C++

#include<bits/stdc++.h>
using namespace std;
 
int frog(long int n, int h[])
{
   long int i;
   if(n==1)
     return 0;
   else if(n==2)
   {
     int a=h[2]-h[1];
     if(a<0)
     a=a*(-1);
     return a;
   }
  else if(n==3)
  {
    int a=h[3]-h[1];
     if(a<0)
     a=a*(-1);
     return a;
  }
 
   int a=h[n-1]-h[n];
   if(a<0)
     a=a*(-1);
   int b=h[n-2]-h[n];
   if(b<0)
     b=b*(-1);
 
   int m=min(a,b);
   if(m==a)
     i=n-1;
   else
     i=n-2;
 
   return m+frog(i,h,dp);
 }
int main()
{long int n, i;
 cin>>n;
 int h[n+1];
 h[0]={0};
 for(i=1 ; i<=n ; i++)
   cin>>h[i];
 
 cout<<frog(n, h);
 
 return 0;
}

Compiler output:
a.cc: In function 'int frog(long int, int*)':
a.cc:37:22: error: 'dp' was not declared in this scope; did you mean 'dup'?
   37 |    return m+frog(i,h,dp);
      |                      ^~
      |                      dup
Language: C++

#include <iostream>
#include <vector>

using namespace std;

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

	int d = -1;
	vector<int> h;
	for (int i = 0; i < N; i++) {
		cin >> d;
		h.push_back(d);
	}

	vector<int> dp(N, INT_MAX);
	dp[0] = 0;
	for (int i = 1; i < N; i++) {
		dp[i] = min(dp[i - 1] + abs(h[i] - h[i - 1]), dp[i]);
		if (i > 1)
			dp[i] = min(dp[i - 2] + abs(h[i] - h[i - 2]), dp[i]);
	}

	cout << dp[N - 1] << endl;

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:27: error: 'INT_MAX' was not declared in this scope
   17 |         vector<int> dp(N, INT_MAX);
      |                           ^~~~~~~
a.cc:3:1: note: 'INT_MAX' is defined in header '<climits>'; this is probably fixable by adding '#include <climits>'
    2 | #include <vector>
  +++ |+#include <climits>
    3 |
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int n;
  cin>>n;
  int arr[n][3];
  int dp[n][3];
  for(i=0;i<n;i++)
  {
    for(int j=0;j<n;j++)
    {
      cin>>arr[i][j];
    }
  }
  memset(dp,-1,sizeof(dp));
  dp[0][0]=arr[0][0],dp[0][1]=arr[0][1],dp[0][2]=arr[0][2];
  for(int i=1;i<n;i++)
  {
    dp[i][0] = dp[0][0] + max(arr[i-1][1],arr[i-1][2]);
    dp[i][1] = dp[0][1] + max(arr[i-1][0],arr[i-1][2]);
    dp[i][2] = dp[0][2] + max(arr[i-1][1],arr[i-1][0]);
  }
  int ans = max(max(dp[n-1][0],dp[n-1][1]),dp[n-1][2]);
  cout<<ans<<"\n";
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:7: error: 'i' was not declared in this scope
    8 |   for(i=0;i<n;i++)
      |       ^
Language: C++

// Indrajeet Mishra

#pragma warning(disable:4996)
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize ("Ofast")
#pragma GCC target ("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC optimize ("-ffloat-store")
 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define rep(i,x,y) for(ll i=x;i<y;i++)
#define test(s) if (!(s)) { cout << __LINE__ << " " << #s << endl; exit(-1); }
#define debug(x) do { std::cerr << x; } while (0)
#define endl "\n"
#define pb push_back
#define pf push_front
#define vll vector<ll>
#define dll deque<ll>
#define sll set<ll, greater <ll>>
#define mll map<ll, ll>
#define vii vector<int>
#define dii deque<int>
#define sii set <int, greater <int>>
#define mii map<int, int>
#define pii pair<int,int>
#define pll pair<ll,ll>
#define mod 1000000007
#define inv2 500000004
#define inv6 166666668
#define N 1000005
#define inf 200000000
#define eps 1e-10
#define PI 3.14159265359
#define all(v) (v).begin(),(v).end()
#define min(a,b) (((a)<(b))?(a):(b))
#define max(a,b) (((a)>(b))?(a):(b))
#define gcd(a,b) __gcd(a,b)


int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    ll n=0,dp[1000000]={0};cin>>n;
    vll v;
    rep(i,0,n){
        ll temp=0;cin>>temp;
        v.pb(temp);
    }
    dp[1]=abs(v[1]-v[0]);
    rep(i,2,n){
        dp[i]=min((dp[i-1]+abs(v[i]-v[i-1])),(dp[i-2]+abs(v[i]-v[i-2])));
    }
    cout<<dp[n-1];
    return 0;
}

Compiler output:
In file included from /usr/include/c++/14/string:43,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:9:
/usr/include/c++/14/bits/allocator.h: In destructor 'std::_Vector_base<long long int, std::allocator<long long int> >::_Vector_impl::~_Vector_impl()':
/usr/include/c++/14/bits/allocator.h:182:7: error: inlining failed in call to 'always_inline' 'std::allocator< <template-parameter-1-1> >::~allocator() noexcept [with _Tp = long long int]': target specific option mismatch
  182 |       ~allocator() _GLIBCXX_NOTHROW { }
      |       ^
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:132:14: note: called from here
  132 |       struct _Vector_impl
      |              ^~~~~~~~~~~~
Language: Java

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

public class Main {



    public static void main(String[] args) {
        // write your code here
        Scanner scanner = new Scanner(System.in);
        int i = scanner.nextInt();
        int heights[] = new int[i];
        for (int j = 0; j < heights.length; j++) {
            heights[j] = scanner.nextInt();
        }
        long numOfWays = getNumOfWays(heights);
        System.out.println(numOfWays);
    }

    private static long getNumOfWays(int hei[]) {
        int dp[] = new int[hei.length];
        Arrays.fill(dp, Integer.MAX_VALUE);
        dp[dp.length - 1] = 0;
        for (int i = dp.length - 2; i >= 0; i--) {
            if (i + 1 < dp.length)
                dp[i] = Math.min(dp[i], Math.abs(hei[i] - hei[i + 1]) + dp[i + 1]);
            if (i + 2 < dp.length) {
                dp[i] = Math.min(dp[i], Math.abs(hei[i] - hei[i + 2]) + dp[i + 2]);
            }
        }
        return dp[0];
    }

    private static boolean canHorseReach(int horseRow, int horseCol, int x, int y) {
        for (int i = 0; i < dir.length; i++) {
            if (horseRow + dir[i][0] == x && horseCol + dir[i][1] == y) return true;
        }
        return false;
    }


}

Compiler output:
Main.java:35: error: cannot find symbol
        for (int i = 0; i < dir.length; i++) {
                            ^
  symbol:   variable dir
  location: class Main
Main.java:36: error: cannot find symbol
            if (horseRow + dir[i][0] == x && horseCol + dir[i][1] == y) return true;
                           ^
  symbol:   variable dir
  location: class Main
Main.java:36: error: cannot find symbol
            if (horseRow + dir[i][0] == x && horseCol + dir[i][1] == y) return true;
                                                        ^
  symbol:   variable dir
  location: class Main
3 errors
Language: C++

#include<iostream>
#include<bits/stdc++.h>
using namepsace std;
int main()
{
  int n;
  cin >> n;
  int *a = new int[n];
  int *dp = new int[n];
  for(int i=0;i<n;i++)
    cin >> a[i];
  dp[0] = 0; dp[1] = 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-2] + abs(a[i]-a[i-2]));
  cout << dp[n-1];
           
}


Compiler output:
a.cc:3:7: error: expected nested-name-specifier before 'namepsace'
    3 | using namepsace std;
      |       ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:7:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    7 |   cin >> n;
      |   ^~~
      |   std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:14:13: error: 'min' was not declared in this scope; did you mean 'std::min'?
   14 |     dp[i] = min(dp[i-1] + abs(a[i]-a[i-1]),dp[i-2] + abs(a[i]-a[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,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: 'std::min' declared here
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
a.cc:15:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   15 |   cout << dp[n-1];
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++

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

Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |   cin >> n;
      |   ^~~
      |   std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:13:13: error: 'min' was not declared in this scope; did you mean 'std::min'?
   13 |     dp[i] = min(dp[i-1] + abs(a[i]-a[i-1]),dp[i-2] + abs(a[i]-a[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,
                 from a.cc:2:
/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;
typedef long long int ll;

ll minCOstDP(ll h[], ll n){
  ll dp[n+1];
  dp[0] = 0;
  dp[1] = abs(h[1]-h[0]);
  for(ll i=2; i<n; i++){
    dp[i] = min(dp[i-1] + abs(h[i]-h[i-1]), dp[i-2] + abs(h[i]-h[i-2]) );
  }
  return dp[n-1];
    
}
int main(){
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  ll n;
  cin>>n;
  ll h[n];
  for(ll i=0; i<n; i++){
  	cin>>h[i];
  }
  ll ans = minCostDP(h,n);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:25:12: error: 'minCostDP' was not declared in this scope; did you mean 'minCOstDP'?
   25 |   ll ans = minCostDP(h,n);
      |            ^~~~~~~~~
      |            minCOstDP
Language: C++

#include <bits/stdc++.h>
#define int long long
using namespace std;
const int N = 2*1e5+10;
const int MOD = 1e9 + 7;
const int INF = 1e18 + 10;
string a;
string b;
int n;
int m;
int dp[3001][3001];
string s;
int ans = 0;

void printVector(vector<char> s){
    for(auto x:s){
        cout<<x<<"";
    }
    cout<<endl;
}
int rec(int i , int j){
//    cout<<i<<" "<<j<<endl;
    if(i==-1 || j==-1){
        return 0;
    }
    if(dp[i][j]!=-1){
        return dp[i][j];
    }
    if(a[i]==b[j]){
        return dp[i][j]  = 1 + rec(i-1 , j-1);
    }
    else{
        return dp[i][j]  = max(rec(i-1 , j) , rec(i,j-1));
    }
}

void f(int i , int j){
    if(i==-1 || j==-1){
        return;
    }

    if(a[i]==b[j]){
        s+=a[i];
        f(i-1 , j-1);
    }
    else{
        if (dp[i-1][j]>dp[i][j-1]){
            f(i-1,j);
        }
        else{
            f(i,j-1);
        }
    }
}




void solve(){
    cin>>a;
    cin>>b;
    for(int i = 0 ; i < 3001 ; i++) for(int j = 0 ; j < 3001 ; j++) dp[i][j] = -1,dpp[i][j]=-1;
    n = a.size()-1;
    m = b.size()-1;
    ans = rec(n,m);
    f(n,m);
    reverse(s.begin(),s.end());
//    cout<<ans<<endl;
    cout<<s<<endl;
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t;
//    cin>>t;
    t = 1;
    for(int i = 0 ; i < t ; i++){
        solve();
    }
    return 0;
}

Compiler output:
a.cc: In function 'void solve()':
a.cc:62:83: error: 'dpp' was not declared in this scope; did you mean 'dup'?
   62 |     for(int i = 0 ; i < 3001 ; i++) for(int j = 0 ; j < 3001 ; j++) dp[i][j] = -1,dpp[i][j]=-1;
      |                                                                                   ^~~
      |                                                                                   dup
Language: C++

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

int memo[1000][100002];
int h[100002];
int N;

int f(int x,int i) {
	int best;
	if(i == N-1) best = x;
	else if ( memo[x][i] != -1) {
		best = memo[x][i];
	}
	else {
		best = f(x+abs(h[i]-h[i+1]),i+1);
		if(i+2 <= N-1) {
			best = min(f(x+abs(h[i]-h[i+2]),i+2),best);
		}
		memo[x][i] = best;
	}
	return best;
}

int main() {
	cin >> N 
	memset(memo,-1,sizeof memo);
	for (int i = 0; i < N; i++) {
		int tmp; cin >> tmp; 
		h[i] = tmp;
	}

		int ans = f(0,0);
		cout << ans;

	return 0;
	
}

Compiler output:
a.cc: In function 'int main()':
a.cc:25:17: error: expected ';' before 'memset'
   25 |         cin >> N
      |                 ^
      |                 ;
   26 |         memset(memo,-1,sizeof memo);
      |         ~~~~~~
Language: Java

import java.util.*;

public class Frog {
    static int[]dp = new int[100000];
    static int[]stones = new int[100000];
    static int N;
    public static void main(String[]args){
        Scanner in = new Scanner(System.in);
        N = in.nextInt();
        for(int i = 0 ; i < N ; ++i)
            stones[i] = in.nextInt();
        solve();
        System.out.println(dp[N-1]);
    }
    public static void solve(){
        dp[0] = 0;
        dp[1] = Math.abs(stones[1]-stones[0]);
        for(int i = 2 ; i < N ; ++i){
            dp[i] = Math.min(dp[i-1] + Math.abs(stones[i]-stones[i-1]),
            dp[i-2]+Math.abs(stones[i]-stones[i-2]));
        }
    }
}

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

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

int memo[100002];
int h[100002];
int N;

int f(int x,int i) {
	int best;
	if(i == N-1) best = x;
	else if (memo[i] != -1) {
		best = min(x,memo[i]);
		memo[i] = best;
	}
	else {
		best = f(x+abs(h[i]-h[i+1]),i+1);
		if(i+2 <= N-1) {
			best = min(f(x+abs(h[i]-h[i+2]),i+2),best);
		}
		memo[i] = best;
	}
	return best;
}

int main() {
	cin >> N 
	memset(memo,-1,sizeof memo);
	for (int i = 0; i < N; i++) {
		int tmp; cin >> tmp; 
		h[i] = tmp;
	}

	int ans = f(0,0);
	cout << ans;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:26:17: error: expected ';' before 'memset'
   26 |         cin >> N
      |                 ^
      |                 ;
   27 |         memset(memo,-1,sizeof memo);
      |         ~~~~~~