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

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

int main(){
  ll N;
  cin >> N;
  ll h[N];
  for(int i=0;i<N;i++){
    cin >> h[i];
  }
  
  vector<int> dp(1111,0);
  dp[1]=abs([h[1]-h[0]);
  
  for(int i=0;i<N;i++)
    dp[i]=min(abs(h[i-1]-h[i])+dp[i-1],abs(h[i-2]-h[i])+dp[i-2]);
             cout<< dp[N-1];

Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'll' was not declared in this scope
    5 |   ll N;
      |   ^~
a.cc:6:10: error: 'N' was not declared in this scope
    6 |   cin >> N;
      |          ^
a.cc:7:5: error: expected ';' before 'h'
    7 |   ll h[N];
      |     ^~
      |     ;
a.cc:9:12: error: 'h' was not declared in this scope
    9 |     cin >> h[i];
      |            ^
a.cc:13:14: error: 'h' was not declared in this scope
   13 |   dp[1]=abs([h[1]-h[0]);
      |              ^
a.cc:13:15: error: expected ',' before '[' token
   13 |   dp[1]=abs([h[1]-h[0]);
      |               ^
      |               ,
a.cc:13:15: error: expected identifier before '[' token
a.cc:13:24: error: expected ']' before ';' token
   13 |   dp[1]=abs([h[1]-h[0]);
      |                        ^
      |                        ]
a.cc: In lambda function:
a.cc:13:24: error: expected '{' before ';' token
a.cc: In function 'int main()':
a.cc:13:24: error: expected ')' before ';' token
   13 |   dp[1]=abs([h[1]-h[0]);
      |            ~           ^
      |                        )
a.cc:17:29: error: expected '}' at end of input
   17 |              cout<< dp[N-1];
      |                             ^
a.cc:4:11: note: to match this '{'
    4 | int main(){
      |           ^
Language: C++

#include<bits/stdc++.h>

#define endl '\n'
#define fi first
#define se second
#define fast ios_base::sync_with_stdio(0);cin.tie(0);
#define ALL(v) v.begin(), v.end()
#define ALLR(v) v.rbegin(), v.rend()
#define deb cout<<"HOLA\n";
#define UNIQUE(v) (v).resize(unique(ALL(v))-(v).begin())
#define forn(i,n) for (int i = 0; i < n; i++)
#define forr(i,a,b) for (int i = a; i <= b; i++)
#define bs(v,f) binary_search(ALL(v),f)
#define lb(v,f) lower_bound(ALL(v),f)
#define ub(v,f) upper_bound(ALL(v),f)
#define pb push_back

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef string str;
typedef long double ld;
typedef pair<int, int> ii;
typedef pair<ii, int> iii;
typedef vector<int> vi;
typedef vector<vector<int> > vvi;
typedef vector<ll> vl;
typedef vector<ii> vii;

vi a;int n;int dp[100005];
int ans(int x){
    if(x>=n-1)return 0;
    if(dp[x])return dp[x];
    int a1,a2;
    a1=ans(x+1)+abs(a[x+1]-a[x])
    a2=ans(x+2)+abs(a[x+2]-a[x])    
    return dp[x]=min(a,b);
}

void solve(){

	cin>>n;
    a.resize(n+5);
    forn(i,n)cin>>a[i];
    cout<<ans(0);
}
int main(){
	/*int t;
	cin>>t;
	while(t--)*/
		solve();
	return 0;
}


Compiler output:
a.cc: In function 'int ans(int)':
a.cc:36:33: error: expected ';' before 'a2'
   36 |     a1=ans(x+1)+abs(a[x+1]-a[x])
      |                                 ^
      |                                 ;
   37 |     a2=ans(x+2)+abs(a[x+2]-a[x])
      |     ~~                           
a.cc:36:7: warning: control reaches end of non-void function [-Wreturn-type]
   36 |     a1=ans(x+1)+abs(a[x+1]-a[x])
      |     ~~^~~~~~~~~~~~~~~~~~~~~~~~~~
Language: Java


import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;

public class Main {
    BufferedReader in;
    PrintWriter out;
    StringTokenizer tok = new StringTokenizer("");

    public static void main(String[] args) {
        new AtFrog().run();
    }

    public void run() {
        try {
            in = new BufferedReader(new InputStreamReader(System.in));
            out = new PrintWriter(System.out);
            solve();
            in.close();
            out.close();
        } catch (Throwable t) {
            t.printStackTrace(System.err);
            System.exit(-1);
        }
    }

    String readString() throws IOException {
        while (!tok.hasMoreTokens()) {
            tok = new StringTokenizer(in.readLine());
        }
        return tok.nextToken();
    }

    int readInt() throws IOException {
        return Integer.parseInt(readString());
    }

    long readLong() throws IOException {
        return Long.parseLong(readString());
    }

    double readDouble() throws IOException {
        return Double.parseDouble(readString());
    }

    int found(int[][] all, int m, int x, int y){
        for(int i=0;i<m;i++)
            if(all[i][0] == x || all[i][0] == y || all[i][1] == x || all[i][1] == y)
                continue;
            else
                return i;
        return -1;
    }

    // solution
    public static int log2(int x)
    {
        return (int) (Math.log(x) / Math.log(2));
    }

    void solve() throws IOException {
        int n = readInt();
        int[] all = new int[n];
        int[] res = new int[n];
        for(int i=0;i<n;i++)
            all[i]=readInt();
        res[0]=0;
        for(int i=1;i<n;i++){
            int cost1 = Math.abs(all[i]-all[i-1]) + res[i-1];
            int cost2 = i==1? Integer.MAX_VALUE : Math.abs(all[i]-all[i-2]) + res[i-2];
            res[i]=Math.min(cost1, cost2);
        }
        System.out.println(res[n-1]);
    }
}


Compiler output:
Main.java:14: error: cannot find symbol
        new AtFrog().run();
            ^
  symbol:   class AtFrog
  location: class Main
1 error
Language: Java

//package org.javatest.atcoder.dp;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;

public class AtFrog {
    BufferedReader in;
    PrintWriter out;
    StringTokenizer tok = new StringTokenizer("");

    public static void main(String[] args) {
        new AtFrog().run();
    }

    public void run() {
        try {
            in = new BufferedReader(new InputStreamReader(System.in));
            out = new PrintWriter(System.out);
            solve();
            in.close();
            out.close();
        } catch (Throwable t) {
            t.printStackTrace(System.err);
            System.exit(-1);
        }
    }

    String readString() throws IOException {
        while (!tok.hasMoreTokens()) {
            tok = new StringTokenizer(in.readLine());
        }
        return tok.nextToken();
    }

    int readInt() throws IOException {
        return Integer.parseInt(readString());
    }

    long readLong() throws IOException {
        return Long.parseLong(readString());
    }

    double readDouble() throws IOException {
        return Double.parseDouble(readString());
    }

    int found(int[][] all, int m, int x, int y){
        for(int i=0;i<m;i++)
            if(all[i][0] == x || all[i][0] == y || all[i][1] == x || all[i][1] == y)
                continue;
            else
                return i;
        return -1;
    }

    // solution
    public static int log2(int x)
    {
        return (int) (Math.log(x) / Math.log(2));
    }

    void solve() throws IOException {
        int n = readInt();
        int[] all = new int[n];
        int[] res = new int[n];
        for(int i=0;i<n;i++)
            all[i]=readInt();
        res[0]=0;
        for(int i=1;i<n;i++){
            int cost1 = Math.abs(all[i]-all[i-1]) + res[i-1];
            int cost2 = i==1? Integer.MAX_VALUE : Math.abs(all[i]-all[i-2]) + res[i-2];
            res[i]=Math.min(cost1, cost2);
        }
        System.out.println(res[n-1]);
    }
}


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

import java.io.PrintWriter;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		PrintWriter pw = new PrintWriter(System.out);

		int N = sc.nextInt();
		int[] h = new int[N];
		for (int i = 0; i < N; i++) {
			h[i] = sc.nextInt();
		}

		
		int[] cost= new int[N];
		cost[N-1] =0;
		for(int i=N-2; i>=0;i--) {
			if(i == N-2)cost[i]=Math.abs(h[i+1]-h[i]);
			else {
				cost[i] = Math.min(cost[i+1]+Math.abs(h[i+1]-h[i]), cost[i+2]+Math.abs(h[i+2]-h[i]));
			}				
		}
		pw.println(cost[0]);
		// end

		sc.close();
		pw.close();
	}

Compiler output:
Main.java:29: error: reached end of file while parsing
	}
	 ^
1 error
Language: Java

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		PrintWriter pw = new PrintWriter(System.out);

		int N = sc.nextInt();
		int[] h = new int[N];
		for (int i = 0; i < N; i++) {
			h[i] = sc.nextInt();
		}

		
		int[] cost= new int[N];
		cost[N-1] =0;
		for(int i=N-2; i>=0;i--) {
			if(i == N-2)cost[i]=Math.abs(h[i+1]-h[i]);
			else {
				cost[i] = Math.min(cost[i+1]+Math.abs(h[i+1]-h[i]), cost[i+2]+Math.abs(h[i+2]-h[i]));
			}				
		}
		pw.println(cost[1]);
		// end

		sc.close();
		pw.close();
	}
}


Compiler output:
Main.java:3: error: cannot find symbol
		Scanner sc = new Scanner(System.in);
		^
  symbol:   class Scanner
  location: class Main
Main.java:3: error: cannot find symbol
		Scanner sc = new Scanner(System.in);
		                 ^
  symbol:   class Scanner
  location: class Main
Main.java:4: error: cannot find symbol
		PrintWriter pw = new PrintWriter(System.out);
		^
  symbol:   class PrintWriter
  location: class Main
Main.java:4: error: cannot find symbol
		PrintWriter pw = new PrintWriter(System.out);
		                     ^
  symbol:   class PrintWriter
  location: class Main
4 errors
Language: Java

package com.pacificlion.atcoder;

import java.io.PrintWriter;
import java.util.Scanner;

public class A {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		PrintWriter pw = new PrintWriter(System.out);

		int N = sc.nextInt();
		int[] h = new int[N];
		for (int i = 0; i < N; i++) {
			h[i] = sc.nextInt();
		}

		
		int[] cost= new int[N];
		cost[N-1] =0;
		for(int i=N-2; i>=0;i--) {
			if(i == N-2)cost[i]=Math.abs(h[i+1]-h[i]);
			else {
				cost[i] = Math.min(cost[i+1]+Math.abs(h[i+1]-h[i]), cost[i+2]+Math.abs(h[i+2]-h[i]));
			}				
		}
		pw.println(cost[1]);
		// end

		sc.close();
		pw.close();
	}
}


Compiler output:
Main.java:6: error: class A is public, should be declared in a file named A.java
public class A {
       ^
1 error
Language: C++

isited;
        int dist[100005];
        for(int i=0;i<100005;i++){
            dist[i]=-1;
        }
        int ans=0;
        for(auto i:m){
            int x=i.first;
            //if(!visited[x]){
                ans = max(ans,dfshelper(x,dist));
                dist[x]=ans;
            // }
        }
        cout<<ans<<endl;

    }
};


int main(){
    int n,m,u,v;
    cin>>n>>m;
    Graph g;
    for(int i=1 ; i <= m ;i++){
        cin>>u>>v;
        g.addEdge(u,v);
    }
    g.dfs();
}


Compiler output:
a.cc:1:1: error: 'isited' does not name a type
    1 | isited;
      | ^~~~~~
a.cc:3:9: error: expected unqualified-id before 'for'
    3 |         for(int i=0;i<100005;i++){
      |         ^~~
a.cc:3:21: error: 'i' does not name a type
    3 |         for(int i=0;i<100005;i++){
      |                     ^
a.cc:3:30: error: 'i' does not name a type
    3 |         for(int i=0;i<100005;i++){
      |                              ^
a.cc:7:9: error: expected unqualified-id before 'for'
    7 |         for(auto i:m){
      |         ^~~
a.cc:14:9: error: 'cout' does not name a type
   14 |         cout<<ans<<endl;
      |         ^~~~
a.cc:16:5: error: expected declaration before '}' token
   16 |     }
      |     ^
a.cc:17:1: error: expected declaration before '}' token
   17 | };
      | ^
a.cc: In function 'int main()':
a.cc:22:5: error: 'cin' was not declared in this scope
   22 |     cin>>n>>m;
      |     ^~~
a.cc:23:5: error: 'Graph' was not declared in this scope
   23 |     Graph g;
      |     ^~~~~
a.cc:26:9: error: 'g' was not declared in this scope
   26 |         g.addEdge(u,v);
      |         ^
a.cc:28:5: error: 'g' was not declared in this scope
   28 |     g.dfs();
      |     ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main() {
  long long N;
  cin>>N;
  long long counter1=0;
  long long a[N+1]={};
  long long b[N+1]={};
  for  (int i=0; i<N; i++){
  a[i+1]=100000;
  cin>>b[i+1];}
  a[2]=(abs(b[2]-b[1]));
   for (int i=3; i<N+1; i++){
  a[i]=min(abs(b[i]-b[i-1])+a[i-1],abs(b[i]-b[i-2])+a[i-2],);}
  
    cout<<a[N];}

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

#include "pch.h"
#include "bits/stdc++.h"
#include <set>
using namespace std;
#define FOR(i, a, b) for (int i = (a); i < (b); i++)
#define RFOR(i, a, b) for (int i = (b)-1; i >= (a); i--)
#define rep(i, n) for (int i = 0; i < (n); i++)
#define rep1(i, n) for (int i = 1; i < (n); i++)
#define rrep(i, n) for (int i = (n)-1; i >= 0; i--)
#define all(i) (i).begin(), (i).end()
#define rall(i) (i).begin(), (i).end(), greater<int>()
#define int long long
#define elif else if
#define eb emplace_back
#define pb push_back
#define mp make_pair
#define fst first
#define sec second
#define mod 1000000007
#define INF 10e10
template <typename T>

void print(T x)
{
	std::cout << x << " ";
}
template <typename T>

void println(T x)
{
	std::cout << x << "\n";
}

int dp[10001];

signed main(void) {
	int n;
	cin >> n;
	vector<int>p(n);
	rep(i, n) {
		cin >> p[i];
	}

	rep(i, 10001) {
		dp[i] = INF;
	}
	dp[0] = 0;
	dp[1] = abs(p[1] - p[0]);

	FOR(i, 2, n) {
		dp[i] = min((dp[i - 2] + abs(p[i - 2] - p[i])), (dp[i - 1] + abs(p[i - 1] - p[i])));
	}
	print(dp[n-1]);
}


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

#inculde <bits/stdc++.h>

using namespace std;

int solve(vector<int>& arr) {
	int n = arr.size();
  	if(n<2) return 0;
  	vector<int> dp(n);
	dp[0] = 0;
  	dp[1] = abs(arr[0]-arr[1]);
  	for(int i=2;i<n;i++) {
    	dp[i] = min(dp[i-1]+abs(arr[i]-arr[i-1]), dp[i-2]+abs(arr[i]-arr[i-2]));
    }
  	return dp[n-1];
}


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





Compiler output:
a.cc:1:2: error: invalid preprocessing directive #inculde; did you mean #include?
    1 | #inculde <bits/stdc++.h>
      |  ^~~~~~~
      |  include
a.cc:5:11: error: 'vector' was not declared in this scope
    5 | int solve(vector<int>& arr) {
      |           ^~~~~~
a.cc:1:1: note: 'std::vector' is defined in header '<vector>'; this is probably fixable by adding '#include <vector>'
  +++ |+#include <vector>
    1 | #inculde <bits/stdc++.h>
a.cc:5:18: error: expected primary-expression before 'int'
    5 | int solve(vector<int>& arr) {
      |                  ^~~
a.cc: In function 'int main()':
a.cc:20:9: error: 'cin' was not declared in this scope
   20 |         cin>>n;
      |         ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | #inculde <bits/stdc++.h>
a.cc:21:9: error: 'vector' was not declared in this scope
   21 |         vector<int> arr(n);
      |         ^~~~~~
a.cc:21:9: note: 'std::vector' is defined in header '<vector>'; this is probably fixable by adding '#include <vector>'
a.cc:21:16: error: expected primary-expression before 'int'
   21 |         vector<int> arr(n);
      |                ^~~
a.cc:23:14: error: 'arr' was not declared in this scope
   23 |         cin>>arr[i];
      |              ^~~
a.cc:25:9: error: 'cout' was not declared in this scope
   25 |         cout<<solve(arr);
      |         ^~~~
a.cc:25:9: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:25:21: error: 'arr' was not declared in this scope
   25 |         cout<<solve(arr);
      |                     ^~~
a.cc:25:24: error: 'solve' cannot be used as a function
   25 |         cout<<solve(arr);
      |                        ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
 int a[1000000][4];
int dp[1e6][4];
int solve(int n, int i){
  if(n==0)
    return 0;
  if(dp[n][i]!= -1)
    return dp[n][i];
  
  for(int j=1;j<=3;j++){
    if(i!=j)
    dp[n][i]=max(dp[n][i], solve(n-1,j)+a[n][j]);
  }
  return dp[n][i];
}
int main(){
  int n;
  cin>> n;
  
   // int a[n][3];
  memset(dp,-1,sizeof(dp));
    for(int i=1;i<=n;i++){
      for(int j=1;j<=3;j++)
        cin>> a[i][j];
    }
      cout<<solve(n,0);
      
}


Compiler output:
a.cc:4:8: error: conversion from 'double' to 'long unsigned int' in a converted constant expression
    4 | int dp[1e6][4];
      |        ^~~
a.cc:4:8: error: could not convert '1.0e+6' from 'double' to 'long unsigned int'
    4 | int dp[1e6][4];
      |        ^~~
      |        |
      |        double
a.cc:4:8: error: size of array 'dp' has non-integral type 'double'
Language: C++

#include <bits/stdc++.h>
using namespace std;
int fun(vector<int>&dp, vector<int>&arr, int i, int n){
  if(i==n)
    return INT_MAX;
  if(dp[i]!=INT_MAX)
    return dp[i];
  dp[i] = min(dp[i-1] + abs(arr[i]-arr[i-1]) + fun(dp,arr,i+1,n), dp[i-2] + abs(arr[i]-arr[i-2]) + fun(dp,arr,i+1,n)));
              return dp[i];
              
 }
 
int main(void){
  int n;
  cin>>n;
  vector<int>dp(n,INT_MAX), arr(n,0);
  
  for(int i = 0;i<n;i++){
    cin>>arr[i];
  }
  dp[0] = arr[0];
  dp[1] = arr[1];
  fun(dp,arr,2,n);
  cout<<dp[n-1]<<"\n";
  return 0;  
}

Compiler output:
a.cc: In function 'int fun(std::vector<int>&, std::vector<int>&, int, int)':
a.cc:8:118: error: expected ';' before ')' token
    8 |   dp[i] = min(dp[i-1] + abs(arr[i]-arr[i-1]) + fun(dp,arr,i+1,n), dp[i-2] + abs(arr[i]-arr[i-2]) + fun(dp,arr,i+1,n)));
      |                                                                                                                      ^
      |                                                                                                                      ;
Language: C++

#include <bits/stdc++.h>
using namespace std;
int fun(vector<int>&dp, vector<int>&arr, int i, int n){
  if(i==n)
    return INT_MAX;
  if(dp[i]!=INT_MAX)
    return dp[i];
  dp[i] = min(dp[i-1] + abs(arr[i]-arr[i-1]) + fun(dp,arr,i+1,n), dp[i-2] + abs(arr[i]-arr[i-2]) + fun(dp,arr,i+1,n)));
              return dp[i];
              
 }
 
int main(void){
  int n;
  cin>>n;
  vector<int>dp(n,INT_MAX), arr(n,0);
  
  for(int i = 0;i<n;i++){
    cin>>arr[i];
  }
  dp[0] = arr[0];
  dp[1] = arr[1];
  fun(dp,2,n,arr);
  cout<<dp[n-1]<<"\n";
  return 0;  
}

Compiler output:
a.cc: In function 'int fun(std::vector<int>&, std::vector<int>&, int, int)':
a.cc:8:118: error: expected ';' before ')' token
    8 |   dp[i] = min(dp[i-1] + abs(arr[i]-arr[i-1]) + fun(dp,arr,i+1,n), dp[i-2] + abs(arr[i]-arr[i-2]) + fun(dp,arr,i+1,n)));
      |                                                                                                                      ^
      |                                                                                                                      ;
a.cc: In function 'int main()':
a.cc:23:10: error: invalid initialization of non-const reference of type 'std::vector<int>&' from an rvalue of type 'int'
   23 |   fun(dp,2,n,arr);
      |          ^
a.cc:3:37: note: in passing argument 2 of 'int fun(std::vector<int>&, std::vector<int>&, int, int)'
    3 | int fun(vector<int>&dp, vector<int>&arr, int i, int n){
      |                         ~~~~~~~~~~~~^~~
Language: Java

import java.util.*;
public class Solution
{
  public static void main(String[] args)
  {
     Scanner  s= new Scanner(System.in);
    int t=s.nextInt();
     int[] arr= new int[t];
    for(int i=0;i<t;i++)
    {
     arr[i]=s.nextInt();
    }
  //  for(int j=0;j<t;j++)
   // System.out.println(arr[j]);
    int[] dp = new int[t];
    dp[0]=0;
    for(int i=1;i<dp.length;i++)
    {
      int c1=Integer.MAX_VALUE;
      int c2=Integer.MAX_VALUE;
      if((i-1)>=0)
        c1=dp[i-1]+Math.abs(arr[i-1]-arr[i]);
      if((i-2)>=0)
        c2=dp[i-2]+Math.abs(arr[i-2]-arr[i]);
 //     System.out.println(c1+" "+c2+" "+i);
      dp[i]= Math.min(c1,c2);
    }
  //  for(int i=0;i<dp.length;i++)
//    System.out.print(dp[i]+" ");
    System.out.println(dp[dp.length-1]);
  }
}

Compiler output:
Main.java:2: error: class Solution is public, should be declared in a file named Solution.java
public class Solution
       ^
1 error
Language: C++

#include <iostream>
#include <vector>

using namespace std;

int maxHappines(vector<vector<int> >& activites){
  int n = activites.size();
  
  vector<vector<int> > dp(n, vector<int>(3, 0));

  dp[0][0] = activites[0][0];
  dp[0][1] = activites[0][1];
  dp[0][2] = activites[0][2];

  for(int i = 1; i < n; i++){
    dp[i][0] = max(dp[i - 1][1], dp[i - 1][2]) + activites[i][0];
    dp[i][1] = max(dp[i - 1][0], dp[i - 1][2]) + activites[i][1];
    dp[i][2] = max(dp[i - 1][0], dp[i - 1][1]) + activites[i][2];
  }
 
  return max({dp[n - 1][0], dp[n - 1][1], dp[n - 1][2]});
}

int main(){

  int n;
  cin >> n;
  vector<vector<int> > activites(n, vector<int>(3));
  for(int i = 0; i < n; i++){
  	for(int j = 0; j < 3; j++){
      cin >> activites[i][j];
    }
  }

  cout << maxHappines(activites) << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int maxHappines(std::vector<std::vector<int> >&)':
a.cc:21:13: error: no matching function for call to 'max(<brace-enclosed initializer list>)'
   21 |   return max({dp[n - 1][0], dp[n - 1][1], dp[n - 1][2]});
      |          ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_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:   candidate expects 2 arguments, 1 provided
/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, 1 provided
Language: Java

class Main{
	public static void main(String args[]) {
		Scanner scan = new Scanner(System.in);

		int arraySize = scan.nextInt();

		int inputArray[] = new int[arraySize+1];
		
		for(int i =1;i<=arraySize;i++) {
			inputArray[i] = scan.nextInt();
		}
		System.out.println(findMinCost(inputArray));
	}
	
	public static int findMinCost(int[]inputArray) {
		int size = inputArray.length;
		int dp[] = new int[size];
		dp[1] = 0; //if frog is at index 0th stone
		for(int i = 2;i<size;i++) {
			int option1 = Math.abs(inputArray[i]-inputArray[i-1])+dp[i-1];
			int option2 = (i==2) ? Integer.MAX_VALUE : Math.abs(inputArray[i]-inputArray[i-2])+dp[i-2];
			dp[i] = Math.min(option1,option2); 
		}
//		for(int i =0;i<size;i++) {
//			System.out.print(dp[i]+"  ");
//		}
		return dp[size-1];
	}
}

Compiler output:
Main.java:3: error: cannot find symbol
		Scanner scan = new Scanner(System.in);
		^
  symbol:   class Scanner
  location: class Main
Main.java:3: error: cannot find symbol
		Scanner scan = new Scanner(System.in);
		                   ^
  symbol:   class Scanner
  location: class Main
2 errors
Language: C++

#include<bits/stdc++.h>
#define ll long long int
using namespace std;
dp[][]
int cost(int * a,int i,int n)
{
  if(i==n-1)
    return 0;
  if(i>n-1)
  {
    return 1000000;
  }
  ll total=0;
  total+=min(abs(a[i+1]-a[i])+cost(a,i+1,n),abs(a[i+2]-a[i])+cost(a,i+2,n));
  return total;
}
int main()
{
  int n;
  cin>>n;
  int a[n];
  for(int i=0;i<n;i++)
  {
    cin>>a[i];
  }
  cout<<cost(a,0,n);
}


Compiler output:
a.cc:4:1: error: 'dp' does not name a type
    4 | dp[][]
      | ^~
a.cc: In function 'int main()':
a.cc:26:9: error: 'cost' was not declared in this scope; did you mean 'cosl'?
   26 |   cout<<cost(a,0,n);
      |         ^~~~
      |         cosl
Language: C++

#include<iostream>
using namespace std;

int modu(int k){
  if (k<0)
    return -1*k;
  return k;
}

int mini(int a, int b){
  if (a<b)
    return a;
  return b;
}

int main(){
  int n,h[100001], arr[3];
  cin>>n;
  
  for (int i=0;i<n;i++){
    cin>>h[i];
  }
  
  arr[0]=0; arr[1]=modu(h[0]-h[1]);
  
  for (int i=2;i<n;i++){
    arr[2] = mini(h[i-2]+modu(h[i-2]-h[i]), h[i-1]+modu(h[i-1]-h[i]));
    arr[0] = arr[1]
    arr[1] = arr[2]
  }
  cout<<arr[1];
}


Compiler output:
a.cc: In function 'int main()':
a.cc:28:20: error: expected ';' before 'arr'
   28 |     arr[0] = arr[1]
      |                    ^
      |                    ;
   29 |     arr[1] = arr[2]
      |     ~~~
Language: C++

#include<iostream>
using namespace std;

int modu(int k){
  if (k<0)
    return -1*k;
  return k;
}

int mini(int a, int b){
  if (a<b)
    return a;
  return b;
}

int main(){
  int n,h[100001], arr[3];
  cin>>n;
  
  for (int i=0;i<n;i++){
    cin>>h[i];
  }
  
  arr[0]=0; arr[1]=modu(h[0],h[1]);
  
  for (int i=2;i<n;i++){
    arr[2] = mini(h[i-2]+modu(h[i-2], h[i]), h[i-1]+modu(h[i-1], h[i]));
    arr[0] = arr[1]
    arr[1] = arr[2]
  }
  cout<<arr[1];
}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:24: error: too many arguments to function 'int modu(int)'
   24 |   arr[0]=0; arr[1]=modu(h[0],h[1]);
      |                    ~~~~^~~~~~~~~~~
a.cc:4:5: note: declared here
    4 | int modu(int k){
      |     ^~~~
a.cc:27:30: error: too many arguments to function 'int modu(int)'
   27 |     arr[2] = mini(h[i-2]+modu(h[i-2], h[i]), h[i-1]+modu(h[i-1], h[i]));
      |                          ~~~~^~~~~~~~~~~~~~
a.cc:4:5: note: declared here
    4 | int modu(int k){
      |     ^~~~
a.cc:27:57: error: too many arguments to function 'int modu(int)'
   27 |     arr[2] = mini(h[i-2]+modu(h[i-2], h[i]), h[i-1]+modu(h[i-1], h[i]));
      |                                                     ~~~~^~~~~~~~~~~~~~
a.cc:4:5: note: declared here
    4 | int modu(int k){
      |     ^~~~
a.cc:28:20: error: expected ';' before 'arr'
   28 |     arr[0] = arr[1]
      |                    ^
      |                    ;
   29 |     arr[1] = arr[2]
      |     ~~~
Language: C++

#include<iostream>
using namespace std;

int modulus(int k){
  if k<0
    return -1*k;
  return k;
}

int mini(int a. int b){
  if a<b
    return a;
  return b;
}

int main(){
  int n,h[100001], arr[3];
  cin>>n;
  
  for (int i=0;i<n;i++){
    cin>>h[i];
  }
  
  arr[0]=0; arr[1]=modulus(h[0],h[1]);
  
  for (int i=2;i<n;i++){
    arr[2] = mini(h[i-2]+modulus(h[i-2], h[i]), h[i-1]+modulus(h[i-1], h[i]));
    arr[0] = arr[1]
    arr[1] = arr[2]
  }
  cout<<arr[1];
}

Compiler output:
a.cc: In function 'int modulus(int)':
a.cc:5:6: error: expected '(' before 'k'
    5 |   if k<0
      |      ^
      |      (
a.cc: At global scope:
a.cc:10:15: error: expected ',' or '...' before '.' token
   10 | int mini(int a. int b){
      |               ^
a.cc: In function 'int mini(int)':
a.cc:11:6: error: expected '(' before 'a'
   11 |   if a<b
      |      ^
      |      (
a.cc:13:10: error: 'b' was not declared in this scope
   13 |   return b;
      |          ^
a.cc: In function 'int main()':
a.cc:24:20: error: reference to 'modulus' is ambiguous
   24 |   arr[0]=0; arr[1]=modulus(h[0],h[1]);
      |                    ^~~~~~~
In file included from /usr/include/c++/14/string:49,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_function.h:172:12: note: candidates are: 'template<class _Tp> struct std::modulus'
  172 |     struct modulus;
      |            ^~~~~~~
a.cc:4:5: note:                 'int modulus(int)'
    4 | int modulus(int k){
      |     ^~~~~~~
a.cc:27:26: error: reference to 'modulus' is ambiguous
   27 |     arr[2] = mini(h[i-2]+modulus(h[i-2], h[i]), h[i-1]+modulus(h[i-1], h[i]));
      |                          ^~~~~~~
/usr/include/c++/14/bits/stl_function.h:172:12: note: candidates are: 'template<class _Tp> struct std::modulus'
  172 |     struct modulus;
      |            ^~~~~~~
a.cc:4:5: note:                 'int modulus(int)'
    4 | int modulus(int k){
      |     ^~~~~~~
a.cc:27:56: error: reference to 'modulus' is ambiguous
   27 |     arr[2] = mini(h[i-2]+modulus(h[i-2], h[i]), h[i-1]+modulus(h[i-1], h[i]));
      |                                                        ^~~~~~~
/usr/include/c++/14/bits/stl_function.h:172:12: note: candidates are: 'template<class _Tp> struct std::modulus'
  172 |     struct modulus;
      |            ^~~~~~~
a.cc:4:5: note:                 'int modulus(int)'
    4 | int modulus(int k){
      |     ^~~~~~~
a.cc:28:20: error: expected ';' before 'arr'
   28 |     arr[0] = arr[1]
      |                    ^
      |                    ;
   29 |     arr[1] = arr[2]
      |     ~~~
Language: C++

#include <iostream>
#include <vector>

using namespace std;

int minCost(vector<int>& heights, int k){
	int n = heights.size();
    vector<int> dp(n, 1e9 + 5);
    dp[0] = 0;

    for(int i = 0; i < n; i++){
      for(int j = i + 1; j <= i + k; j++){
        if(j < n){
          dp[j] = min(dp[j], abs(heights[i] - heights[j]) + dp[i]);
        }
      }
    }

  return dp[n - 1];
}

int main(){

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

  cout << minCost(heights, k) << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:25:15: error: 'k' was not declared in this scope
   25 |   cin >> n >> k;
      |               ^
Language: C++

#include <iostream>
#include <vector>

using namespace std;

int minCost(vector<int>& heights){
	int n = heights.size();
    vector<int> dp(n + 1, INT_MAX);
    dp[0] = dp[1] = 0;

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

  return dp[n];
}

int main(){

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

  cout << minCost(heights) << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int minCost(std::vector<int>&)':
a.cc:8:27: error: 'INT_MAX' was not declared in this scope
    8 |     vector<int> dp(n + 1, 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 <iostream>
#include <vector>

using namespace std;

int minCost(vector<int>& heights){
	int n = heights.size();
    vector<int> dp(n + 1, INT_MAX);
    dp[0] = dp[1] = 0;
    
    for(int i = 2; i <= n; i++){
  		dp[i] = min(abs(dp[i - 2] - heights[i - 1]), abs(dp[i - 1] - heights[i - 1]))
          + dp[i - 1]; 
    }
  
  return dp[n];
}

int main(){
	
  int n;
  cin >> n;
  vector<int> heights(n);
  for(int i = 0; i < n; i++)cin >> heights[i];
  
  cout << minCost(heights) << endl;
  
  return 0;
}

Compiler output:
a.cc: In function 'int minCost(std::vector<int>&)':
a.cc:8:27: error: 'INT_MAX' was not declared in this scope
    8 |     vector<int> dp(n + 1, 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++

int func(vector<int> v)
{
  int n=v.size();
  int i;
  int dp[n];
  dp[0]=v[0];dp[1]=v[1]-v[0];
  for(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]));
  }
  return dp[n-1];
}

int main()
{
  int n;
  cin>>n;
  vector<int> v;
  int i,a;
  for(i=0;i<n;i++)
  {
    
    cin>>a;
  	v.push_back(a);
  }
  cout<<func(v)<<"\n";
}

Compiler output:
a.cc:1:10: error: 'vector' was not declared in this scope
    1 | int func(vector<int> v)
      |          ^~~~~~
a.cc:1:17: error: expected primary-expression before 'int'
    1 | int func(vector<int> v)
      |                 ^~~
a.cc: In function 'int main()':
a.cc:17:3: error: 'cin' was not declared in this scope
   17 |   cin>>n;
      |   ^~~
a.cc:18:3: error: 'vector' was not declared in this scope
   18 |   vector<int> v;
      |   ^~~~~~
a.cc:18:10: error: expected primary-expression before 'int'
   18 |   vector<int> v;
      |          ^~~
a.cc:24:9: error: 'v' was not declared in this scope
   24 |         v.push_back(a);
      |         ^
a.cc:26:3: error: 'cout' was not declared in this scope
   26 |   cout<<func(v)<<"\n";
      |   ^~~~
a.cc:26:14: error: 'v' was not declared in this scope
   26 |   cout<<func(v)<<"\n";
      |              ^
a.cc:26:15: error: 'func' cannot be used as a function
   26 |   cout<<func(v)<<"\n";
      |               ^
Language: Java

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

public class Frog1 {

    private static int solve(int[] arr, int[] dp, int currPos) {
        if(currPos >= arr.length) {
            return Integer.MAX_VALUE;
        }
        if(dp[currPos] != -1) {
            return dp[currPos];
        }
        int count = 0;
        int res = Integer.MAX_VALUE;
        if(currPos == arr.length - 1) {
            res = 0;
        }
        for(int i = currPos + 1; i < arr.length; i++) {
            if(count == 2) {
                break;
            }
            count++;
            int temp = solve(arr, dp, i);
            res = Math.min(res, temp + Math.abs(arr[currPos] - arr[i]));
        }
        dp[currPos] = res;
        return dp[currPos];
    }

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String line = sc.nextLine();
        int N = Integer.parseInt(line);
        int[] arr = new int[N];
        int[] dp = new int[N];
        Arrays.fill(dp, -1);
        line = sc.nextLine();
        String[] splits = line.split(" ");
        for(int i=0; i<N; i++) {
            arr[i] = Integer.parseInt(splits[i]);
        }
        System.out.println(solve(arr, dp, 0));
    }
}

Compiler output:
Main.java:4: error: class Frog1 is public, should be declared in a file named Frog1.java
public class Frog1 {
       ^
1 error
Language: Java



import java.util.Scanner;

public class A_Frog_I {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int N = in.nextInt();
        int[] h = new int[N];
        for (int i = 0; i < N; i++) h[i] = in.nextInt();
        System.out.println(minCost(h, N));
    }

    public static int minCost(int[] h, int N) {
        int st1 = 0;
        int st2 = Math.abs(h[1] - h[0]);
        for (int i = 2; i < N; i++) {
            int next = Math.min(st2 + Math.abs(h[i] - h[i-1]), st1 + Math.abs(h[i] - h[i-2]));
            st1 = st2;
            st2 = next;
        }
        return st2;
    }
}


Compiler output:
Main.java:5: error: class A_Frog_I is public, should be declared in a file named A_Frog_I.java
public class A_Frog_I {
       ^
1 error
Language: Java

import java.util.*;
import java.io.*;
public class atcoder {
	static int n,arr[];
	static long dp[][];
	public static void main(String[] args) throws IOException{
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		int t=1;
//		Integer.parseInt(br.readLine().trim());
		StringBuilder printans=new StringBuilder();
		while(t-->0)
		{
			n=Integer.parseInt(br.readLine().trim());
			arr=new int[n];
			int sum=0;
			StringTokenizer tok=new StringTokenizer(br.readLine()," ");
			for(int i=0;i<n;i++) {
				arr[i]=Integer.parseInt(tok.nextToken());
				sum+=arr[i];
			}
			dp=new long[n+1][sum+1];
			memset();
			
			printans.append(call(0,0));
		    
		}
		System.out.println(printans);

	}
	static void memset() {
		for(long a[]:dp) {
			Arrays.fill(a, -1);
		}
	}
	static long call(int i,int h) {
		if(i==n) {
			return h;
		}
		if(dp[i][h]!=-1) {
			return dp[i][h];
		}
		long ans=Integer.MAX_VALUE;
		if(i<n-2) {
			ans=Math.min(ans, call(i+2,h+Math.abs(arr[i]-arr[i+2])));
			ans=Math.min(ans, call(i+1,h+Math.abs(arr[i+1]-arr[i])));
		}
		else if(i<n-1) {
			ans=Math.min(ans, call(i+1,h+Math.abs(arr[i+1]-arr[i])));
		}
		else if(i==n-1) {
			ans=Math.min(ans, call(i+1,h));
		}
		dp[i][h]=ans;
		return ans;
			
	}

}


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

#include <iostream>
#include <vector>
#include <fstream>
#include <algorithm>

using namespace std;

int main() {
   // 11:34 - 
   for (int t=0; t<3; ++t) {
   int n;
   cin >> n;
   vector<int> a(n), dp(n, 0);
   for (int i=0; i<n; ++i) cin >> a[i];

   for (int i=1; i<n; ++i) {
     int& val = dp[i];
     val = dp[i-1] + abs(a[i] - a[i-1]);
     if (i > 1)
       val = min(val, dp[i-2]+abs(a[i] - a[i-2]));
   }

   cout << dp.back() << endl;

   return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:26:2: error: expected '}' at end of input
   26 | }
      |  ^
a.cc:8:12: note: to match this '{'
    8 | int main() {
      |            ^
Language: Java

/* package codechef; // 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. */
public class Codechef
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		BufferedReader br=  new BufferedReader(new InputStreamReader(System.in));
		int n = Integer.parseInt(br.readLine());
		StringBuilder str = new StringBuilder();
		String[] in = br.readLine().split(" ");
		int[] arr = new int[n];
// 		while(t--!=0){
		    
// 		}
        for(int i=0;i<n;i++){
            arr[i] = Integer.parseInt(in[i]);
        }
        int curr = n-1;
        int ans = 0;
        int[] dp = new int[n];
        dp[0] = 0;
        dp[1] = dp[0]+Math.abs(arr[0]-arr[1]);
        for(int i=2;i<n;i++){
            dp[i] = Math.min(dp[i-2]+Math.abs(arr[i-2]-arr[i]),dp[i-1]+Math.abs(arr[i-1]-arr[i]));
        }
        System.out.println(dp[n-1]);
	}
}


Compiler output:
Main.java:8: error: class Codechef is public, should be declared in a file named Codechef.java
public class Codechef
       ^
1 error
Language: Java

class Main {
  public static void main(String args[]) {
  		Scanner sc = new Scanner(System.in);

        int N = sc.nextInt();
        int[] stones = new int[N];
        for (int i = 0; i < N; i++) {
            stones[i] = sc.nextInt();
        }
        int[] cost = new int[N];
        cost[0] = 0;
        cost[1] = Math.abs(stones[1] - stones[0]);
        for (int i = 2; i < N; i++) {
            int cost1 = Math.abs(stones[i] - stones[i-1]) + cost[i-1];
            int cost2 = Math.abs(stones[i] - stones[i-2]) + cost[i-2];
            cost[i] = Math.min(cost1, cost2);
        }
        System.out.println(cost[N-1]);
  }
}

Compiler output:
Main.java:3: error: cannot find symbol
  		Scanner sc = new Scanner(System.in);
  		^
  symbol:   class Scanner
  location: class Main
Main.java:3: error: cannot find symbol
  		Scanner sc = new Scanner(System.in);
  		                 ^
  symbol:   class Scanner
  location: class Main
2 errors
Language: C++

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

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

Compiler output:
a.cc: In function 'int main()':
a.cc:16:75: error: expected ')' before ';' token
   16 |     dp[i]=min((dp[i-1]+abs(arr[i]-arr[i-1]),(dp[i-2]+abs(arr[i]-arr[i-2]));
      |               ~                                                           ^
      |                                                                           )
a.cc:16:75: error: expected ')' before ';' token
   16 |     dp[i]=min((dp[i-1]+abs(arr[i]-arr[i-1]),(dp[i-2]+abs(arr[i]-arr[i-2]));
      |              ~                                                            ^
      |                                                                           )
Language: C++

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

Compiler output:
a.cc: In function 'int main()':
a.cc:4:16: error: 'N' was not declared in this scope
    4 |         cin >> N;
      |                ^
a.cc:7:16: error: 'height' was not declared in this scope
    7 |         cin >> height[i];
      |                ^~~~~~
a.cc:9:5: error: 'ans' was not declared in this scope; did you mean 'abs'?
    9 |     ans[0] = 0;
      |     ^~~
      |     abs
a.cc:10:22: error: 'height' was not declared in this scope
   10 |         ans[1] = abs(height[1]-height[0]);
      |                      ^~~~~~
Language: Java

import java.util.*;
public class A {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int n = input.nextInt();
        int[] nums = new int[n];
        for(int i = 0; i < n; i++) {
            nums[i] = input.nextInt();
        }
        int[] dp = new int[n];
        Arrays.fill(dp, Integer.MAX_VALUE);
        dp[0] = nums[0];
        for(int i = 0; i < n; i++) {
            try{
                dp[i + 1] = Math.min(dp[i + 1], dp[i] + Math.abs(nums[i + 1] - nums[i]));
            } catch(Exception e) {

            }
            try{
                dp[i + 2] = Math.min(dp[i + 2], dp[i] + Math.abs(nums[i + 2] - nums[i]));
            } catch(Exception e) {

            }
        }
        System.out.println(dp[n - 1]);
    }
}


Compiler output:
Main.java:2: error: class A is public, should be declared in a file named A.java
public class A {
       ^
1 error
Language: Java

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

class Node implements Comparable<Node>{
    int i;
    int d;
    public Node(int i, int d){
        this.i = i;
        this.d = d;
    }
    public int compareTo(Node n){
        return Integer.compare(this.d, n.d);
    }
}

public class frog1 {
    public static void main(String[] args) throws Exception{
        BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
        PrintWriter output = new PrintWriter(System.out);
        int N = Integer.parseInt(input.readLine());
        StringTokenizer st = new StringTokenizer(input.readLine());
        int[] arr = new int[N];
        boolean[] visited = new boolean[N];
        for(int i = 0; i<N; i++){
            arr[i] = Integer.parseInt(st.nextToken());
        }
        PriorityQueue<Node> pq = new PriorityQueue<Node>();
        pq.add(new Node(1, Math.abs(arr[0] - arr[1])));
        if(N>2)
            pq.add(new Node(2, Math.abs(arr[0] - arr[2])));

        while(!pq.isEmpty()){
            Node n = pq.poll();
            if(visited[n.i]) continue;
            visited[n.i] = true;
            if(n.i == N-1){
                output.println(n.d);
                break;
            }
            if(n.i<N-1)
                pq.add(new Node(n.i+1, n.d + Math.abs(arr[n.i] - arr[n.i+1])));
            if(n.i<N-2)
                pq.add(new Node(n.i+2, n.d + Math.abs(arr[n.i] - arr[n.i+2])));
        }
        output.close();
    }
}

Compiler output:
Main.java:16: error: class frog1 is public, should be declared in a file named frog1.java
public class frog1 {
       ^
1 error
Language: Java

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

class Node implements Comparable<Node>{
    int i;
    int d;
    public Node(int i, int d){
        this.i = i;
        this.d = d;
    }
    public int compareTo(Node n){
        return Integer.compare(this.d, n.d);
    }
}

public class Main.extension {
    public static void main(String[] args) throws Exception{
        BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
        PrintWriter output = new PrintWriter(System.out);
        int N = Integer.parseInt(input.readLine());
        StringTokenizer st = new StringTokenizer(input.readLine());
        int[] arr = new int[N];
        for(int i = 0; i<N; i++){
            arr[i] = Integer.parseInt(st.nextToken());
        }
        PriorityQueue<Node> pq = new PriorityQueue<Node>();
        pq.add(new Node(1, Math.abs(arr[0] - arr[1])));
        if(N>2)
            pq.add(new Node(2, Math.abs(arr[0] - arr[2])));

        while(!pq.isEmpty()){
            Node n = pq.poll();
            if(n.i == N-1){
                output.println(n.d);
                break;
            }
            if(n.i<N-1)
                pq.add(new Node(n.i+1, n.d + Math.abs(arr[n.i] - arr[n.i+1])));
            if(n.i<N-2)
                pq.add(new Node(n.i+2, n.d + Math.abs(arr[n.i] - arr[n.i+2])));
        }
        output.close();
    }
}

Compiler output:
Main.java:16: error: '{' expected
public class Main.extension {
                 ^
1 error
Language: Java

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

class Node implements Comparable<Node>{
    int i;
    int d;
    public Node(int i, int d){
        this.i = i;
        this.d = d;
    }
    public int compareTo(Node n){
        return Integer.compare(this.d, n.d);
    }
}

public class frog1 {
    public static void main(String[] args) throws Exception{
        BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
        PrintWriter output = new PrintWriter(System.out);
        int N = Integer.parseInt(input.readLine());
        StringTokenizer st = new StringTokenizer(input.readLine());
        int[] arr = new int[N];
        for(int i = 0; i<N; i++){
            arr[i] = Integer.parseInt(st.nextToken());
        }
        PriorityQueue<Node> pq = new PriorityQueue<Node>();
        pq.add(new Node(1, Math.abs(arr[0] - arr[1])));
        if(N>2)
            pq.add(new Node(2, Math.abs(arr[0] - arr[2])));

        while(!pq.isEmpty()){
            Node n = pq.poll();
            if(n.i == N-1){
                output.println(n.d);
                break;
            }
            if(n.i<N-1)
                pq.add(new Node(n.i+1, n.d + Math.abs(arr[n.i] - arr[n.i+1])));
            if(n.i<N-2)
                pq.add(new Node(n.i+2, n.d + Math.abs(arr[n.i] - arr[n.i+2])));
        }
        output.close();
    }
}

Compiler output:
Main.java:16: error: class frog1 is public, should be declared in a file named frog1.java
public class frog1 {
       ^
1 error