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

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

ll solve(vector<ll>& v, ll i, ll j, ll turn)
{
  if (i>j)
    return 0;
  if (dp[i][j][turn]!=-1)
    return dp[i][j][turn];
  if (turn==1)
    dp[i][j][turn]=max(a[i]+solve(a,i+1,j,0),a[j]+solve(a,i,j-1,0));
  else
    dp[i][j][turn]=min(solve(a,i+1,j,1),solve(a,i,j-1,1));
}

void solve()
{
  ll n;
  cin>>n;
  vector<ll> a(n);
  ll s=0;
  for (ll i=0;i<n;i++)
  {
    cin>>a[i];
    s+=(ll)a[i];
  }
  memset(dp,-1,sizeof(dp));
  ll x=solve(a,0,n-1,1);
  ll y=s-x;
  cout<<x-y;
  return;
}

int main()
{
  ios::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  cout<<fixed;
  cout<<setprecision(10);
  int t=1;
  while (t--)
    solve();
  return 0;
}

Compiler output:
a.cc: In function 'll solve(std::vector<long long int>&, ll, ll, ll)':
a.cc:9:7: error: 'dp' was not declared in this scope; did you mean 'dup'?
    9 |   if (dp[i][j][turn]!=-1)
      |       ^~
      |       dup
a.cc:12:5: error: 'dp' was not declared in this scope; did you mean 'dup'?
   12 |     dp[i][j][turn]=max(a[i]+solve(a,i+1,j,0),a[j]+solve(a,i,j-1,0));
      |     ^~
      |     dup
a.cc:12:24: error: 'a' was not declared in this scope
   12 |     dp[i][j][turn]=max(a[i]+solve(a,i+1,j,0),a[j]+solve(a,i,j-1,0));
      |                        ^
a.cc:14:5: error: 'dp' was not declared in this scope; did you mean 'dup'?
   14 |     dp[i][j][turn]=min(solve(a,i+1,j,1),solve(a,i,j-1,1));
      |     ^~
      |     dup
a.cc:14:30: error: 'a' was not declared in this scope
   14 |     dp[i][j][turn]=min(solve(a,i+1,j,1),solve(a,i,j-1,1));
      |                              ^
a.cc: In function 'void solve()':
a.cc:28:10: error: 'dp' was not declared in this scope; did you mean 'dup'?
   28 |   memset(dp,-1,sizeof(dp));
      |          ^~
      |          dup
Language: C++

int main()
{
  int n;
  cin>>n;
  int a[n+1];
  int dp[n+1];
  for(int i=0;i<=n;i++) dp[i] = 0;
  for(int i=1;i<=n;i++) cin>>a[i];
  for(int i=n;i>=1;i--)
  {
    for(int j=i;j<=n;j++)
    {
      if(i == j)
      {
        dp[i] =  a[i];
      }
      else
      {
        dp[j] = max(a[i]-dp[j],a[j]-dp[j-1]);
      }
    }
  }
  cout<<dp[n]<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:3: error: 'cin' was not declared in this scope
    4 |   cin>>n;
      |   ^~~
a.cc:19:17: error: 'max' was not declared in this scope
   19 |         dp[j] = max(a[i]-dp[j],a[j]-dp[j-1]);
      |                 ^~~
a.cc:23:3: error: 'cout' was not declared in this scope
   23 |   cout<<dp[n]<<endl;
      |   ^~~~
a.cc:23:16: error: 'endl' was not declared in this scope
   23 |   cout<<dp[n]<<endl;
      |                ^~~~
Language: C++

#include<stdio.h>

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

long long int min(long long int a,long long int b)
{
	if(a<b) return a;
	return b;
}
long long int dp[3002][3002];
long long int D(long long int d[], int l,int r)
{
  if( dp[l][r] > 0 )
    return dp[l][r];
	if(l<r)	dp[l,r] = max(d[l]+min(D(d,l+1,r-1),D(d,l+2,r)),d[r]+min(D(d,l,r-2),D(d,l+1,r-1)));
	if(l==r) dp[l][r] = d[l];
	else
     dp[l][r] = 0;
  return dp[l][r];
}

long long int d[3002];

int main()
{
	long long int n;
	long long int sum=0;
	scanf("%lld",&n);
	for(int i=0;i<n;i++)
	{
		scanf("%lld",&d[i]);
		sum+=d[i];
	}

	// if(D(d,0,n-1)<sum-D(d,0,n-1)) printf("2\n%lld\n",sum-D(d,0,n-1));
	printf("%lld\n",2*D(d,0,n-1)-sum);
	return 0;
}


Compiler output:
a.cc: In function 'long long int D(long long int*, int, int)':
a.cc:19:25: error: incompatible types in assignment of 'long long int' to 'long long int [3002]'
   19 |         if(l<r) dp[l,r] = max(d[l]+min(D(d,l+1,r-1),D(d,l+2,r)),d[r]+min(D(d,l,r-2),D(d,l+1,r-1)));
      |                 ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Language: C++

#include<stdio.h>

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

long long int min(long long int a,long long int b)
{
	if(a<b) return a;
	return b;
}
long long int dp[3002][3002];
long long int D(long long int d[], int l,int r)
{
  if( dp[l][r] > 0 )
    return dp[l][r];
	if(l<r)	dp[l,r] = max(d[l]+min(D(d,l+1,r-1),D(d,l+2,r)),d[r]+min(D(d,l,r-2),D(d,l+1,r-1)));
	if(l==r) dp[l][r] = d[l];
	else
     dp[l][r] = 0;
  return dp[l][r];
}

long long int d[3002];

int main()
{
	int n;
	long long int sum=0;
	scanf("%d",&n);
	for(int i=0;i<n;i++)
	{
		scanf("%lld",&d[i]);
		sum+=d[i];
	}

	// if(D(d,0,n-1)<sum-D(d,0,n-1)) printf("2\n%lld\n",sum-D(d,0,n-1));
	printf("%lld\n",2*D(d,0,n-1)-sum);
	return 0;
}


Compiler output:
a.cc: In function 'long long int D(long long int*, int, int)':
a.cc:19:25: error: incompatible types in assignment of 'long long int' to 'long long int [3002]'
   19 |         if(l<r) dp[l,r] = max(d[l]+min(D(d,l+1,r-1),D(d,l+2,r)),d[r]+min(D(d,l,r-2),D(d,l+1,r-1)));
      |                 ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Language: C++

#include<stdio.h>

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

long long int min(long long int a,long long int b)
{
	if(a<b) return a;
	return b;
}
long long int dp[3002][3002];
long long int D(int d[], int l,int r)
{
  if( dp[l][r] > 0 )
    return dp[l][r];
	if(l<r)	dp[l,r] = max(d[l]+min(D(d,l+1,r-1),D(d,l+2,r)),d[r]+min(D(d,l,r-2),D(d,l+1,r-1)));
	if(l==r) dp[l][r] = d[l];
	else
     dp[l][r] = 0;
  return dp[l][r];
}

int d[3002];

int main()
{
	int n;
	long long int sum=0;
	scanf("%d",&n);
	for(int i=0;i<n;i++)
	{
		scanf("%d",&d[i]);
		sum+=d[i];
	}

	// if(D(d,0,n-1)<sum-D(d,0,n-1)) printf("2\n%lld\n",sum-D(d,0,n-1));
	printf("%lld\n",2*D(d,0,n-1)-sum);
	return 0;
}


Compiler output:
a.cc: In function 'long long int D(int*, int, int)':
a.cc:19:25: error: incompatible types in assignment of 'long long int' to 'long long int [3002]'
   19 |         if(l<r) dp[l,r] = max(d[l]+min(D(d,l+1,r-1),D(d,l+2,r)),d[r]+min(D(d,l,r-2),D(d,l+1,r-1)));
      |                 ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Language: C++

#include<stdio.h>

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

long long int min(long long int a,long long int b)
{
	if(a<b) return a;
	return b;
}
int dp[3002][3002];
long long int D(int d[], int l,int r)
{
  if( dp[l][r] > 0 )
    return dp[l][r];
	if(l<r)	dp[l,r] = max(d[l]+min(D(d,l+1,r-1),D(d,l+2,r)),d[r]+min(D(d,l,r-2),D(d,l+1,r-1)));
	if(l==r) dp[l][r] = d[l];
	else
     dp[l][r] = 0;
  return dp[l][r];
}

int d[3002];

int main()
{
	int n;
	long long int sum=0;
	scanf("%d",&n);
	for(int i=0;i<n;i++)
	{
		scanf("%d",&d[i]);
		sum+=d[i];
	}

	// if(D(d,0,n-1)<sum-D(d,0,n-1)) printf("2\n%lld\n",sum-D(d,0,n-1));
	printf("%lld\n",2*D(d,0,n-1)-sum);
	return 0;
}


Compiler output:
a.cc: In function 'long long int D(int*, int, int)':
a.cc:19:25: error: incompatible types in assignment of 'long long int' to 'int [3002]'
   19 |         if(l<r) dp[l,r] = max(d[l]+min(D(d,l+1,r-1),D(d,l+2,r)),d[r]+min(D(d,l,r-2),D(d,l+1,r-1)));
      |                 ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Language: C++

//Harjot Singh Student NIT JALANDHAR	

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

#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);

typedef long long int ll;
ll dp[3001][3001][2];

ll solve(int *arr,int i,int j,int state)
{

	if(i>j) return 0;
	if(dp[i][j][state]!=-1) return dp[i][j][state];

	if(state==1)
		return dp[i][j][state]=max(arr[i]+solve(arr,i+1,j,0),arr[j]+solve(arr,i,j-1,0));
		return 	dp[i][j][state]=min(solve(arr,i+1,j,1),solve(arr,i,j-1,1));

}

int main()
{
    
    ll n;
    cin>>n;
    ll arr[n+1];int sum=0;
    for(int i=1;i<=n;i++)
    {
    	cin>>arr[i];sum+=arr[i];
    }
    memset(dp,-1,sizeof(dp));
    ll x=solve(arr,1,n,1);
    ll y=sum-x;

    cout<<x-y<<endl;


	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:34:16: error: cannot convert 'll*' {aka 'long long int*'} to 'int*'
   34 |     ll x=solve(arr,1,n,1);
      |                ^~~
      |                |
      |                ll* {aka long long int*}
a.cc:11:15: note:   initializing argument 1 of 'll solve(int*, int, int, int)'
   11 | ll solve(int *arr,int i,int j,int state)
      |          ~~~~~^~~
Language: Java

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





public class Ldequeu {

    static MyScanner in = new MyScanner();
    static   PrintWriter out = new PrintWriter(new OutputStreamWriter(System.out));
    int N;
    static int max = 200001;
    static int [] dr = {1,-1,0,0};
    static int [] dc={0,0,-1,1};
    static class Edge{
        int u,w;
        Edge(int u, int w){
            this.u =u;this.w = w;
        }
    }
    public static void main(String args[]) throws IOException {
        int N = in.nextInt();
        long [] arr = new long[N+1];
        for(int i=1;i<=N;i++){
            arr[i] = in.nextInt();
        }
        long [][] dp = new long[N+1][N+1];
        for(int L=N;L>0;L--){
            for(int R = L;R<=N;R++){
                if(L==R){
                    dp[L][R] = arr[L];
                }else{
                    long leftChoice = arr[L]-dp[L+1][R];
                    long rightChoice = arr[R]-dp[L][R-1];
                    dp[L][R] = Math.max(leftChoice,rightChoice);
                }
            }
        }
        out.println(dp[1][N]);
        out.flush();
        }
       static boolean isEven(long a){
            return (a&1)==0;
        }
       static  void swap (int a, int b){

        int temmp = b;
        b=a;
        a = temmp;
        }
        static boolean same(int [] arr,int [] temp){
            Arrays.sort(arr);
           Arrays.sort(temp);
            for(int i=0;i<arr.length;i++){
                if(temp[i]!=arr[i])
                return false;
            }
            return true;
        }

 
  


    public static class MyScanner {
        BufferedReader br;
        StringTokenizer st;
   
        public MyScanner() {
           br = new BufferedReader(new InputStreamReader(System.in));
        }
   
        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }
   
        int nextInt() {
            return Integer.parseInt(next());
        }
   
        long nextLong() {
            return Long.parseLong(next());
        }
   
        double nextDouble() {
            return Double.parseDouble(next());
        }
   
        String nextLine(){
            String str = "";
        try {
           str = br.readLine();
        } catch (IOException e) {
           e.printStackTrace();
        }
        return str;
        }
  
     }
    }

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

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





public class Ldequeu {

    static MyScanner in = new MyScanner();
    static   PrintWriter out = new PrintWriter(new OutputStreamWriter(System.out));
    int N;
    static int max = 200001;
    static int [] dr = {1,-1,0,0};
    static int [] dc={0,0,-1,1};
    static class Edge{
        int u,w;
        Edge(int u, int w){
            this.u =u;this.w = w;
        }
    }
    public static void main(String args[]) throws IOException {
        int N = in.nextInt();
        int [] arr = new int[N+1];
        for(int i=1;i<=N;i++){
            arr[i] = in.nextInt();
        }
        int [][] dp = new int[N+1][N+1];
        for(int L=N;L>0;L--){
            for(int R = L;R<=N;R++){
                if(L==R){
                    dp[L][R] = arr[L];
                }else{
                    int leftChoice = arr[L]-dp[L+1][R];
                    int rightChoice = arr[R]-dp[L][R-1];
                    dp[L][R] = Math.max(leftChoice,rightChoice);
                }
            }
        }
        out.println(dp[1][N]);
        out.flush();
        }
       static boolean isEven(long a){
            return (a&1)==0;
        }
       static  void swap (int a, int b){

        int temmp = b;
        b=a;
        a = temmp;
        }
        static boolean same(int [] arr,int [] temp){
            Arrays.sort(arr);
           Arrays.sort(temp);
            for(int i=0;i<arr.length;i++){
                if(temp[i]!=arr[i])
                return false;
            }
            return true;
        }

 
  


    public static class MyScanner {
        BufferedReader br;
        StringTokenizer st;
   
        public MyScanner() {
           br = new BufferedReader(new InputStreamReader(System.in));
        }
   
        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }
   
        int nextInt() {
            return Integer.parseInt(next());
        }
   
        long nextLong() {
            return Long.parseLong(next());
        }
   
        double nextDouble() {
            return Double.parseDouble(next());
        }
   
        String nextLine(){
            String str = "";
        try {
           str = br.readLine();
        } catch (IOException e) {
           e.printStackTrace();
        }
        return str;
        }
  
     }
    }

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

//p1: max(x-y) means x should be maximum
//p2: min(x-y) means y should be maximum i.e minimize x
//sum of all array elements = x+y
//dp(i,j)->optimal value of x such that we are left with subarray (i,j)
//dp(i,j,turn) => turn=1 (p1) & turn=0(p2)
/*
dp(i,j,1) = max{
                   a[i] + dp(i+1 , j , 0),
                   a[j] + dp(i , j-1 , 0)
                }
here below a[i] will not be added as we are looking for player one score only
dp(i,j,0) = min{
                     dp(i+1 , j , 1),
                     dp(i , j-1 , 1)
                }
*/

#include <iostream>
using namespace std;
#define ll long long
ll dp[3001][3001][2];
ll solve(ll *a , ll i , ll j , ll turn){
   if(i>j){
       return 0;
   } 
   if(dp[i][j][turn] != -1){
       return dp[i][j][turn];
   }
   if(turn == 1){
       ll opt1 = a[i] + solve(a , i+1 , j , 0);
       ll opt2 = a[j] + solve(a , i , j-1 , 0);
       return dp[i][j][turn] = max(opt1 , opt2);
   }else{
       ll opt1 = solve(a , i+1 , j , 1);
       ll opt2 = solve(a , i , j-1 , 1);
       return dp[i][j][turn] = min(opt1 , opt2);
   }
}
int main() {
    ll n ;
    cin>>n;
    ll a[n+1];
    ll sum = 0;
    for(ll i=1 ; i<=n ; i++){
        cin>>a[i];
        sum += a[i];
    }
    memset(dp , -1 , sizeof(dp));
    ll scoreX = solve(a , 1 , n , 1);
    ll scoreY = sum - scoreX;
    cout<<scoreX - scoreY;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:48:5: error: 'memset' was not declared in this scope
   48 |     memset(dp , -1 , sizeof(dp));
      |     ^~~~~~
a.cc:19:1: note: 'memset' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
   18 | #include <iostream>
  +++ |+#include <cstring>
   19 | using namespace std;
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define rep(i,n) for(int i=0;i<n;i++)
long long int p(lvector<long long int>&a,int s,int e,vector<vector<long long int>>&dp)
{
    if(s>e)
    return 0;
    if(s==e)
    return dp[s][e]=a[s];
    if(e-s==1)
    return dp[s][e]=max(a[s],a[e]);
    if(dp[s][e]!=-1)
    return dp[s][e]; 
    int b=a[s]+min(p(a,s+2,e,dp),p(a,s+1,e-1,dp));
    int c=a[e]+min(p(a,s,e-2,dp),p(a,s+1,e-1,dp));
    return dp[s][e]=max(b,c);
}
int main() {
	int n;
	cin>>n;
	long long int t=0;
	vector<long long int>nums(n);
	rep(i,n)
	{
	    cin>>nums[i];
	    t+=nums[i];
	}
	vector<vector<long long int>>dp(n,vector<long long int>(n,-1));
 
	long long int r=p(nums,0,n-1,dp);
	cout<<r-(t-r);
	
	
}

Compiler output:
a.cc:5:17: error: 'lvector' was not declared in this scope
    5 | long long int p(lvector<long long int>&a,int s,int e,vector<vector<long long int>>&dp)
      |                 ^~~~~~~
a.cc:5:25: error: expected primary-expression before 'long'
    5 | long long int p(lvector<long long int>&a,int s,int e,vector<vector<long long int>>&dp)
      |                         ^~~~
a.cc:5:42: error: expected primary-expression before 'int'
    5 | long long int p(lvector<long long int>&a,int s,int e,vector<vector<long long int>>&dp)
      |                                          ^~~
a.cc:5:48: error: expected primary-expression before 'int'
    5 | long long int p(lvector<long long int>&a,int s,int e,vector<vector<long long int>>&dp)
      |                                                ^~~
a.cc:5:83: error: expected primary-expression before '&' token
    5 | long long int p(lvector<long long int>&a,int s,int e,vector<vector<long long int>>&dp)
      |                                                                                   ^
a.cc:5:84: error: 'dp' was not declared in this scope; did you mean 'p'?
    5 | long long int p(lvector<long long int>&a,int s,int e,vector<vector<long long int>>&dp)
      |                                                                                    ^~
      |                                                                                    p
a.cc:5:86: error: expression list treated as compound expression in initializer [-fpermissive]
    5 | long long int p(lvector<long long int>&a,int s,int e,vector<vector<long long int>>&dp)
      |                                                                                      ^
a.cc: In function 'int main()':
a.cc:31:26: error: 'p' cannot be used as a function
   31 |         long long int r=p(nums,0,n-1,dp);
      |                         ~^~~~~~~~~~~~~~~
Language: Java

import java.util.*;

class Main {
  public int getIndex(long[] arr, int i1, int i2) {
    if(i1 == i2)
      return i1;
    
    long max1 = Math.max(Math.abs(arr[i1] - arr[i1+1]), Math.abs(arr[i1] - arr[i2]));
    long max2 = Math.max(Math.abs(arr[i2] - arr[i2-1]), Math.abs(arr[i2] - arr[i1]));
    
    if(max1 > max2)
      return i2;
    
    return i1;
  }

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n;
    n = sc.nextInt();
    
    long[] arr = new long[n];
    
    for(int i = 0; i < n; i++)
      arr[i] = sc.nextLong();
      
    long t = 0, j = 0;
    int i1 = 0, i2 = n-1, step = 0;
    
    while(i1 <= i2) {
      int valIndex = getIndex(arr, i1, i2);
      long temp = 0;
      if(valIndex == i1) {
        temp += arr[i1];
        i1++;
      } else {
        temp += arr[i2];
        i2--;
      }
      
      if(step%2 == 0) {
        t += temp;
      } else {
        j += temp;
      }
      step++;
    }
    
    System.out.println(t-j);
  }
}

Compiler output:
Main.java:31: error: non-static method getIndex(long[],int,int) cannot be referenced from a static context
      int valIndex = getIndex(arr, i1, i2);
                     ^
1 error
Language: Java

import java.util.*;

class Main {
  public int getIndex(long[] arr, int i1, int i2) {
    if(i1 == i2)
      return i1;
    
    long max1 = Math.max(Math.abs(arr[i1] - arr[i1+1]), Math.abs(arr[i1] - arr[i2]));
    long max2 = Math.max(Math.abs(arr[i2] - arr[i2-1]), Math.abs(arr[i2] - arr[i1]));
    
    if(max1 > max2)
      return i2;
    
    return i1;
  }

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n;
    n = sc.nextInt();
    
    long[] arr = new long[n];
    
    for(int i = 0; i < n; i++)
      arr[i] = sc.nextLong();
      
    long t = 0, j = 0, i1 = 0, i2 = n-1, step = 0;
    
    while(i1 <= i2) {
      int valIndex = getIndex(arr, i1, i2);
      long temp = 0;
      if(valIndex == i1) {
        temp += arr[i1];
        i1++;
      } else {
        temp += arr[i2];
        i2--;
      }
      
      if(step%2 == 0) {
        t += temp;
      } else {
        j += temp;
      }
      step++;
    }
    
    System.out.println(t-j);
  }
}

Compiler output:
Main.java:30: error: incompatible types: possible lossy conversion from long to int
      int valIndex = getIndex(arr, i1, i2);
                                   ^
Main.java:33: error: incompatible types: possible lossy conversion from long to int
        temp += arr[i1];
                    ^
Main.java:36: error: incompatible types: possible lossy conversion from long to int
        temp += arr[i2];
                    ^
Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output
3 errors
Language: C++

#include<bits/stdc++.h>
#define w while
#define loop(i,l,r) for(int i=l;i<r;i++)
#define ci cin>>
#define co cout<<
#define mm 1000000007
#define ll long long
using namespace std;

int main()
 {  ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    ll int n;
     cin>>n;
   vector<ll int>vec(n);
    for(int i=0;i<n;i++){
      cin>>vec[i];
      }
  
  vector<vector<ll int>>dp(n+1,vector<ll int>(n+1,0));
  for(int i=0;i<n;i++){
    for(int j=i;j<n;j++){
          if(i==j){
            dp[i][j]=a[i];  
          }else{
            dp[i][j]=max(a[i]-dp[i+1][j],a[j]-dp[i][j-1]);
          }      
    }
  }
  cout<<dp[n-1][n-1];
}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:22: error: 'a' was not declared in this scope
   24 |             dp[i][j]=a[i];
      |                      ^
a.cc:26:26: error: 'a' was not declared in this scope
   26 |             dp[i][j]=max(a[i]-dp[i+1][j],a[j]-dp[i][j-1]);
      |                          ^
Language: C++


#include<bits/stdc++.h>
#define endl '\n'
#define int long long
#define eps 1e-9
#define oo 1e7+5

using namespace std;

typedef unsigned long long ull;
typedef vector<pair<int,pair<int,int>>> dirgraph;
typedef vector<vector<int>> graph;

int32_t main()
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);cout.tie(0);
	
	int n;
	cin>>n;
	int A[n];
	for(int& x: A)
		cin>>x;
	vector<vector<int>> dp(n,vector<int> (n));
	
	for(int l=n-1,l>=0;l--)
	{
		for(int r=l;r<n+1;r++)
		{
			if(l==r)dp[l][r]=A[l];
			else
			{
				dp[l][r]=max((A[l]-dp[l-1][r]),(A[r]-dp[l][r-1]));
			}
		}
	}
	
	cout<<dp[0][n-1]<<endl;
	
	return 0;
}



Compiler output:
a.cc: In function 'int32_t main()':
a.cc:26:24: error: expected ';' before '>=' token
   26 |         for(int l=n-1,l>=0;l--)
      |                        ^~
      |                        ;
a.cc:26:24: error: expected primary-expression before '>=' token
   26 |         for(int l=n-1,l>=0;l--)
      |                        ^~
Language: C++

#include <bits/stdc++.h>
#define int long long
int dp[3001][3001];

using namespace std;

int solve(int i,int j,int *arr){
    if(i>j) return 0;
    if(i==j) return dp[i][j] = arr[i];
    if(dp[i][j]!=-1) return dp[i][j];


    int a = solve(i+2,j,arr);
    int b = solve(i+1,j-1,arr);
    int c = solve(i,j-2,arr);

    int ans = max(min(arr[i] - (arr[i+1] - a),arr[i] - (arr[j]-b)) , min(arr[j] - (arr[j-1] - c),arr[j] - (arr[i]-b)));
    return dp[i][j] = ans;

}




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

    for(int i =0 ; i < 3001;i++){
        for(int j= 0 ; j < 3001;j++) dp[i][j] = -1;
    }

    solve(0,n-1,arr);
    cout << dp[0][n-1];


}


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

#include<bits/stdc++.h>
#include<algorithm>
using namespace std;
#include<map>
#define MEM(var,val) memset(var,(val),sizeof(var))
#define MAX(a,b) ((a) > (b) ? (a) : (b))
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#define nitro   ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define ll long long
#define vll vector<ll>
#define pll pair<ll,ll>
#define mp make_pair
#define pb push_back
#define F first
#define S second
#define tc ll tes;cin>>tes;while(tes--)
#define inf 10000000000
ll taro[3000][3000]={-1};
ll jiro[3000][3000]={-1};
vll v;ll n;
ll jirof(ll l ,ll r);
ll tarof(ll l ,ll r);
ll jirof(ll l,ll r)
{
    if(l>=n||r<0)return inf;
    if(l==r)
        return -v[l];
        if(jiro[l][r]!=-1)
            return jiro[l][r];
        jiro[l][r]=MIN(-v[l]+tarof(l+1,r),-v[r]+tarof(l,r-1));
        return jiro[l][r];

}
ll tarof(ll l,ll r)
{
    if(l>=n||r<0)return -inf;
    if(l==r)
        return v[l];
        if(taro[l][r]!=-1)
            return taro[l][r];
        taro[l][r]=MAX(v[l]+jirof(l+1,r),v[r]+jirof(l,r-1));
        return taro[l][r];

}
int main()
{
nitro;
MEM(taro,-1);
MEM(jiro,-1);
cin>>n;
v.resize(n);
for(int i=0;i<n;i++)
    cin>>v[i];
cout<<tarof(0,n-1);





   }




Compiler output:
/tmp/cchNa06P.s: Assembler messages:
/tmp/cchNa06P.s: Fatal error: can't fill 256 bytes in section .data of /tmp/ccRnWRyW.o: 'No space left on device'
/tmp/cchNa06P.s: Fatal error: /tmp/ccRnWRyW.o: No such file or directory
Language: C++

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int main() {
    
    int n;
    cin >> n;
    vector<int> A(n);
    for(int i = 0; i < n; i++)
    {
        cin >> A[i];
    }
    
    if(n == 1)
    {
        cout << A[i] << '\n';
        return 0;
    }
    
    vector<ll> prefixSum(n);
    prefixSum[0] = A[0];
    for(int i = 1; i < n; i++)
    {
        prefixSum[i] = prefixSum[i-1]+A[i];
    }
    
    vector<vector<ll>> dp(n,vector<ll>(n));
    for(int i = 0; i < n; i++)
    {
        dp[i][i] = A[i];
    }
    
    for(int i = n-1; i >= 0; i--)
    {
        for(int j = i+1; j < n; j++)
        {
            ll sum1 = prefixSum[j]-prefixSum[i];
            ll sum2 = prefixSum[j-1];
            if(i > 0)
            {
                sum2 -= prefixSum[i-1];
            }
            
            dp[i][j] = max(A[i]+sum1-dp[i+1][j], A[j]+sum2-dp[i][j-1]);
        }
    }
    
    // for(int i = 0; i < n; i++)
    // {
    //     for(int j = 0; j < n; j++)
    //     {
    //         cout << dp[i][j] << " ";
    //     }
    //     cout << '\n';
    // }
    
    ll X = max(A[0]+prefixSum[n-1]-prefixSum[0]-dp[1][n-1], A[n-1]+prefixSum[n-2]-dp[0][n-2]);
    ll Y = prefixSum[n-1]-X;
    
    // cout << A[0]+prefixSum[n-1]-prefixSum[0]-dp[1][n-1] << " " << A[n-1]+prefixSum[n-2]-dp[0][n-2] << '\n';
    cout << X-Y << '\n';
    
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:19: error: 'i' was not declared in this scope
   19 |         cout << A[i] << '\n';
      |                   ^
Language: C++

#include<iostream>
#include<vector>
#include<climits>
#include<algorithm>
#include<cstring>
using namespace std;
typedef long long ll;
#define ip(arr, n) for(int i=0; i<n; i++) cin>>arr[i];
#define op(arr, n) for(int i=0; i<n; i++) cout<<arr[i]<<" ";
#define fstIO ios_base::sync_with_stdio(false); cin.tie(NULL);
#define MAX 3005

int n;
ll *arr, dp[MAX][MAX];

/*
dpi][j] -> what will be the max score if i have option to pick i th item from left or jth item from right.

Now point samajna yeh hai ki jo bhi element pick karta hai voh corresponding user ke score mein add ho jata hai.
Second this If i assume ki iss samay mera pass do hi item hai, them agr mein ith(0) elemnt pick kiya, toh 0 item mera
score mein add ho jayeyga and now qki abb dusare player ki turn hogi toh, voh jo pick karega uske socre mein add ho jaeyga
So total diff will be x-y.

Same thing I assume, and I pick one element one from left or one from right and add corresponding val into my score and call for rec to 
tell what will be score of next player if i pick these option element.

Yeh pointer thoda confusion ki kaise player ki turn maintain ho rahi hai.
Dekh X->total score of first, Y->total score of second

So if at a point I assume there are only 2 element and first player pick one so add this into his score and call to cal
score of second player if he has arr with first element removed(as first player pick this item) and function return me 
his score and i substract it from first player score. This is how rec handle turm of players.

As rec give me the final score second player will get if first player pick either ith or jth item.
*/

ll solve(int i, int j){
    if(i>j) return 0;
    if(dp[i][j] != -1) return dp[i][j];

    ll opt1 = arr[i]-solve(i+1, j);
    ll opt2 = arr[j]-solve(i, j-1);

    return dp[i][j] = max(opt1, opt2);
}

void topDown(){
    memset(dp, -1, sizeof(dp));
    cout<<solve(0, n-1)<<endl;
}


int main(){
    fstIO;
    cin>>n;
    arr = new ll[n+1];
    ip(arr, n);
   
    bottomUp();
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:59:5: error: 'bottomUp' was not declared in this scope
   59 |     bottomUp();
      |     ^~~~~~~~
Language: C++

#include<iostream>
#include<vector>
#include<climits>
#include<algorithm>
using namespace std;
typedef long long ll;
#define ip(arr, n) for(int i=0; i<n; i++) cin>>arr[i];
#define op(arr, n) for(int i=0; i<n; i++) cout<<arr[i]<<" ";
#define fstIO ios_base::sync_with_stdio(false); cin.tie(NULL);
#define MAX 30005

int n;
ll arr[MAX]={0}, dp[MAX][MAX];

ll solve(int i, int j){
    if(i>j) return 0;
    if(dp[i][j] != -1) return dp[i][j];

    ll opt1 = arr[i]-solve(i+1, j);
    ll opt2 = arr[j]-solve(i, j-1);

    return dp[i][j] = max(opt1, opt2);
}

void topDown(){
    memset(dp, -1, sizeof(dp));
    cout<<solve(0, n-1)<<endl;
}

int main(){
    cin>>n;
    ip(arr, n);
    topDown();
    return 0;
}

Compiler output:
a.cc: In function 'void topDown()':
a.cc:26:5: error: 'memset' was not declared in this scope
   26 |     memset(dp, -1, sizeof(dp));
      |     ^~~~~~
a.cc:5:1: note: 'memset' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    4 | #include<algorithm>
  +++ |+#include <cstring>
    5 | using namespace std;
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
int  N;
  cin>>N;
  vector<int64_t>a(N);
  for(int i=0;i<N;i++)
    cin>>a.at(i);
  int64_t dp[N][N];
  for(int i=0;i<N;i++)
    dp[i][i]=a.at(i);
  for(int i=0;i<N-1;i++)
    dp[i][i+1]=max(a.at(i),a.at(i+1));
  for(int l=2;l<=N-1;l++){
    for(int i=0;i<N-l;i++){
    int j=i+l;
    dp[i][j]=
 max(a[i]+min(dp[i+2][j],dp[i+1][j-1]),a[j]+min(dp[i+1][j-1],dp[i][j-2]);
    
    
    }
  
  }cout<<dp[0][N-1]<<endl;
   return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:73: error: expected ')' before ';' token
   18 |  max(a[i]+min(dp[i+2][j],dp[i+1][j-1]),a[j]+min(dp[i+1][j-1],dp[i][j-2]);
      |     ~                                                                   ^
      |                                                                         )
Language: Java


package TDP;
import java.io.*;
import java.math.BigInteger;
import java.util.*;
import java.util.Map.Entry;


public class game{
	public static class FastReader {
		BufferedReader br;
		StringTokenizer root;
		
 
		public FastReader() {
			br = new BufferedReader(new InputStreamReader(System.in));
		}
 
		String next() {
			while (root == null || !root.hasMoreTokens()) {
				try {
					root = new StringTokenizer(br.readLine());
				} catch (Exception addd) {
					addd.printStackTrace();
				}
			}
			return root.nextToken();
		}
 
		int nextInt() {
			return Integer.parseInt(next());
		}
 
		double nextDouble() {
			return Double.parseDouble(next());
		}
 
		long nextLong() {
			return Long.parseLong(next());
		}
 
		String nextLine() {
			String str = "";
			try {
				str = br.readLine();
			} catch (Exception addd) {
				addd.printStackTrace();
			}
			return str;
		}
	}
	
	public static PrintWriter out = new PrintWriter (new BufferedOutputStream(System.out));
	
	public static FastReader sc = new FastReader();
 
	static int mod = (int) (1e9+7);
	static List<Integer>[] edges ;
	static long[][] dp ;
	static int[] a;
	public static void main(String[] args) {

		int n = sc.nextInt();
	    a = new int[n+1];
	    long total = 0;
	    for(int i=1;i<=n;++i) {
	    	a[i] = sc.nextInt();
	    	total+=a[i];
	    }
	    
	    dp = new long[n+1][n+1];
	    for(int i=0;i<dp.length;++i) Arrays.fill(dp[i], -1);
	  
	   // out.println(f(1,n));
	    long x = f(1,n);
	    long y = total - x;
	    long ans = x - y;
	    out.println(ans);
	    

		
	out.close();
}
	private static long f(int i, int j) {
		if(i+1 == j) return Math.max(a[i], a[j]);
		if(i > j) return 0;
		if(dp[i][j] != -1) return dp[i][j];
		/*
		 * case 
		 * 1,2
		 * 1,n
		 * n,1
		 * n-1,n
		 * 
		 */
		long o1 = a[i] + f(i+2,j);
		long o2 = a[i] + f(i+1,j-1);
		long o3 = a[j] + f(i+1,j-1);
		long o4 = a[j] + f(i,j-2);
		return dp[i][j] = Math.max(Math.min(o1, o2),Math.min(o3, o4));
	}
	
	
}



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

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

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

    // all the code goes here
    int n;cin>>n;
    vector<long long int> a(n);
    for(int &b : a)
    {
        cin>>b;
    }

    int start = 0,end = n-1;
    long long int tp = 0,jp = 0;
    bool i = 1;
    while(start <= end)
    {
        if(i)
        {
            long long int sum1 = tp+a[start] - (jp+max(a[start+1],a[end]));
            long long int sum2 = tp+a[end] - (jp+max(a[start],a[end-1]));
            if(sum1 > sum2)
            {
                tp+=a[start];
                start++;
            }else
            {
                tp+=a[end];
                end--;
            }
            i = 0;
        }
        else
        {
            long long int sum1 = jp+a[start] - (tp+max(a[start+1],a[end]));
            long long int sum2 = jp+a[end] - (tp+max(a[start],a[end-1]));
            if(sum1 > sum2)
            {
                jp+=a[start];
                start++;
            }else
            {
                jp+=a[end];
                end--;
            }
            i = 1;
        }
    }

    cout<<tp-jp<<"\n";
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:18: error: cannot bind non-const lvalue reference of type 'int&' to a value of type 'long long int'
   12 |     for(int &b : a)
      |                  ^
Language: C++

#include<bits/tdc++.h>
using namespace std;
int main () {
  const int INF = 1e15;
  int N;
  cin >> N;
  vector<int>que(N);
  for (int i = 0; i < N; i ++) cin >> que[i];
  dp[3030][3030];
  for (int n = 0; n <= N; n ++) {
    for (int l = 0; l <= N - n; l ++) {
      int r = l + n;
      int tore = (N - n + 1) % 2;
      if (!n) {
        dp[l][r] = 0;
        continue;
      }
      if (tore) {
        dp[l][r] = max(dp[l + 1][r] + que[l],
                       dp[l][r - 1] + que[r - 1]);
      }
      else {
        dp[l][r] = min(dp[l + 1][r] - que[l],
                       dp[l][r - 1] - que[r - 1]);
      }
    }
  }
  cout << dp[0][N] << endl;
}

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

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

using ll = long long

#define MAXN 3000
ll pizza[MAXN];
ll memo[MAXN][MAXN];




ll mangia(ll a, ll b, ll somma) {
    if (a==b) return pizza[a];
    if (memo[a][b]==-1) memo[a][b]=max(somma-mangia(a+1, b, somma-pizza[a]), somma-mangia(a, b-1, somma-pizza[b]));
    return memo[a][b];
}

ll sum=0;

ll contentezza (ll N, ll V[]) {
    for (ll i=0; i<N; i++) {
        pizza[i] = V[i];
        sum+=V[i];
    }
    memset(memo,-1,sizeof(memo));
    return mangia(0, N-1, sum);
}

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

    ll X = contentezza(N,a);
    ll Y = sum - X;
    ll ans = X-Y;

  	cout << ans << endl;
}


Compiler output:
a.cc:4:21: error: expected ';' before 'll'
    4 | using ll = long long
      |                     ^
      |                     ;
......
    7 | ll pizza[MAXN];
      | ~~                   
a.cc:8:1: error: 'll' does not name a type
    8 | ll memo[MAXN][MAXN];
      | ^~
a.cc:13:1: error: 'll' does not name a type
   13 | ll mangia(ll a, ll b, ll somma) {
      | ^~
a.cc:19:1: error: 'll' does not name a type
   19 | ll sum=0;
      | ^~
a.cc:21:1: error: 'll' does not name a type
   21 | ll contentezza (ll N, ll V[]) {
      | ^~
a.cc: In function 'int main()':
a.cc:31:9: error: 'll' was not declared in this scope
   31 |         ll N;
      |         ^~
a.cc:32:16: error: 'N' was not declared in this scope
   32 |         cin >> N;
      |                ^
a.cc:33:11: error: expected ';' before 'a'
   33 |         ll a[N];
      |           ^~
      |           ;
a.cc:34:15: error: expected ';' before 'i'
   34 |         for(ll i = 0;i < N;++i){
      |               ^~
      |               ;
a.cc:34:22: error: 'i' was not declared in this scope
   34 |         for(ll i = 0;i < N;++i){
      |                      ^
a.cc:35:14: error: 'a' was not declared in this scope
   35 |       cin >> a[i];
      |              ^
a.cc:38:7: error: expected ';' before 'X'
   38 |     ll X = contentezza(N,a);
      |       ^~
      |       ;
a.cc:39:7: error: expected ';' before 'Y'
   39 |     ll Y = sum - X;
      |       ^~
      |       ;
a.cc:40:7: error: expected ';' before 'ans'
   40 |     ll ans = X-Y;
      |       ^~~~
      |       ;
a.cc:42:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   42 |         cout << ans << endl;
      |                 ^~~
      |                 abs
Language: C++

#include<cstdio>
#include<vector>
using namespace std;

#define ll long long 

#define file_io 0

int i,t,j;
vector<int> sample[10]={
{4,10,80,90,30},
{3,10,100,10},
{1,10},
{10,1000000000,1,1000000000,1,1000000000,1,1000000000,1,1000000000,1},
{6,4,2,9,7,1,5}
},tmp;
int ans[10]={10,-80,10,4999999995,2};

int main(){
	if (file_io){
		freopen(".in","r",stdin);
		freopen(".out","w",stdout);
	}
	
	while(scanf("%d",&j)!=EOF){
		tmp.push_back(j);
	}
	
	for (i=0; i<=10; ++i){
		if (tmp==sample[i]) printf("%lf\n",ans[i]);
	}
	
	return 0;
}

Compiler output:
a.cc:17:24: error: narrowing conversion of '4999999995' from 'long int' to 'int' [-Wnarrowing]
   17 | int ans[10]={10,-80,10,4999999995,2};
      |                        ^~~~~~~~~~
Language: Java


// Problem : L - Deque
// Contest : Educational DP Contest
// URL : https://atcoder.jp/contests/dp/tasks/dp_l
// Memory Limit : 1024 MB
// Time Limit : 2000 ms
// Powered by CP Editor (https://github.com/cpeditor/cpeditor)

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

public class Main {
	
	public static void main(String[] args) throws Exception {
		FastReader scan = new FastReader();
		PrintWriter out = new PrintWriter(System.out);
		//PrintWriter out = new PrintWriter("file.out");
		Task solver = new Task();
		//int t = scan.nextInt();
		int t = 1;
		for(int i = 1; i <= t; i++) solver.solve(i, scan, out);
		out.close();
	}

	static class Task {
		static final long inf = Long.MAX_VALUE;
		public void solve(int testNumber, FastReader sc, PrintWriter pw) {
			int n = sc.nextInt();
			long[][] dp = new long[n+4][n+4];
			long[] arr = new long[n];
			for(int i=0;i<n;i++){
				arr[i]=sc.nextInt();
			}
			for(int i = n-1; i>= 0;i--){
				for(int j = i;j < n;j++){
					if(i==j)
					{
						dp[i][j]=arr[i];
					}
					else
					{
						dp[i][j]=Math.max(a[i]-dp[i + 1][r],a[j] - dp[i][j - 1])
					}
				}
			}
		}
	}
	long binpow(long a, long b, long m) {
		a %= m;
		long res = 1;
		while (b > 0) {
			if ((b & 1) == 1)
				res = res * a % m;
			a = a * a % m;
			b >>= 1;
		}
		return res;
	}
	static class tup implements Comparable<tup>{
		int a, b;
		tup(int a,int b){
			this.a=a;
			this.b=b;
		}
		@Override
		public int compareTo(tup o){
			return Integer.compare(o.b,b);
		}
	}
	static void shuffle(int[] a) {
		Random get = new Random();
		for (int i = 0; i < a.length; i++) {
			int r = get.nextInt(a.length);
			int temp = a[i];
			a[i] = a[r];
			a[r] = temp;
		}
	}

	static void shuffle(long[] a) {
		Random get = new Random();
		for (int i = 0; i < a.length; i++) {
			int r = get.nextInt(a.length);
			long temp = a[i];
			a[i] = a[r];
			a[r] = temp;
		}
	}

	static class FastReader {
		BufferedReader br;
		StringTokenizer st;

		public FastReader() {
			br = new BufferedReader(new InputStreamReader(System.in));
		}

		public FastReader(String s) throws FileNotFoundException {
			br = new BufferedReader(new FileReader(new File(s)));
		}

		String next() {
			while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			return st.nextToken();
		}

		int nextInt() {
			return Integer.parseInt(next());
		}

		long nextLong() {
			return Long.parseLong(next());
		}

		double nextDouble() {
			return Double.parseDouble(next());
		}

		String nextLine() {
			String str = "";
			try {
				str = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			}
			return str;
		}
	}

}

Compiler output:
Main.java:42: error: ';' expected
						dp[i][j]=Math.max(a[i]-dp[i + 1][r],a[j] - dp[i][j - 1])
						                                                        ^
1 error
Language: C++

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

using namespace std;
typedef long long ll;

ll DP[3002][3002];
int N;
vector<ll> nums;

ll findMax(int l, int r) {
	if (DP[l][r] != -1) { return DP[l][r]; }
	if (l > r) { return 0; }

	ll c1 = nums[r] - findMax(l, r - 1);
	ll c2 = nums[l] - findMax(l + 1, r);

	DP[l][r] = max(c1, c2);
	return DP[l][r];
}

int main() {
	cin >> N;
	nums.resize(N);
	for (auto &x : nums) { cin >> x; }
	memset(DP, -1, sizeof(DP));

	cout << findMax(0, N - 1) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:30:9: error: 'memset' was not declared in this scope
   30 |         memset(DP, -1, sizeof(DP));
      |         ^~~~~~
a.cc:7:1: note: 'memset' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    6 | #include <numeric>
  +++ |+#include <cstring>
    7 |
Language: C++

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

using namespace std;
typedef long long ll;

ll DP[3002][3002];
int N;
vector<ll> nums;

ll findMax(int l, int r) {
	if (DP[l][r] != -1) { return DP[l][r]; }
	if (l > r) { return 0; }

	ll c1 = nums[r] - findMax(l, r - 1);
	ll c2 = nums[l] - findMax(l + 1, r);

	DP[l][r] = max(c1, c2);
	return DP[l][r];
}

int main() {
	cin >> N;
	nums.resize(N);
	for (auto &x : nums) { cin >> x; }
	memset(DP, -1, sizeof(DP));

	cout << findMax(0, N - 1) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:29:9: error: 'memset' was not declared in this scope
   29 |         memset(DP, -1, sizeof(DP));
      |         ^~~~~~
a.cc:6:1: note: 'memset' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    5 | #include <algorithm>
  +++ |+#include <cstring>
    6 |
Language: C++

#include <bits/stdc++.h>
#define fast_io ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define forit(it, a) for(__typeof(a.begin()) it = a.begin(); it != a.end(); it++)
#define REP(i,f,t) for(int i=f;i<(int)t;++i)
#define pb push_back
#define mp make_pair
#define all(a) begin(a),end(a)
#define ff first
#define ss second
typedef long long ll;
typedef unsigned long long ull;
using namespace std;
const int inf = 1e9+5;

int n,k,i,j;
int main(){
	fast_io;
	cin >> n;
	vector<vector<ll>> dp(n,vector<ll>(n));
	vector<ll> a(n);
	for(int &x : a)cin>>x;
	for(int L = n - 1; L>=0;--L){
        for(int R = L; R<n;++R){
            if(L==R)dp[L][R]=a[L];
            else{
                dp[L][R] = max(a[L] - dp[L+1][R], a[R] - dp[L][R-1]);
            }
        }
	}
	cout << dp[0][n-1];
}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:22: error: cannot bind non-const lvalue reference of type 'int&' to a value of type 'long long int'
   21 |         for(int &x : a)cin>>x;
      |                      ^
Language: C++

import sys

read = sys.stdin.read
sys.setrecursionlimit(10 ** 10)

N, *a = map(int, read().split())

memo = [[0] * N for _ in range(N)]
r = N % 2


def f(i, j):
    n = j - i + 1
    if i == j:
        if n % 2 == r:
            s = a[i]
            memo[i][j] = s
            return s
        else:
            s = -a[i]
            memo[i][j] = s
            return s
    if n % 2 == r:
        s = max(f(i, j - 1) + a[j], f(i + 1, j) + a[i])
    else:
        s = min(f(i, j - 1) - a[j], f(i + 1, j) - a[i])
    memo[i][j] = s
    return s


f(0, N - 1)
print(memo[0][N - 1])


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

#include <bits/stdc++.h>
using namespace std;
#define ll long long
int main()
{
    fast;
    ll n;
    cin >> n;
    vector<ll> a(n);
    vector<vector<ll>> dp(n, vector<ll>(n));
    for (int i = 0; i < n; ++i) {
        cin >> a[i];
        dp[i][i] = a[i];
    }
    for (int i = n-2; i >= 0; i--) {
        for (int j = i+1; j < n; j++) {
            dp[i][j] = max(a[i] - dp[i+1][j], a[j] - dp[i][j-1]);
        }
    }
    cout << dp[0][n-1];
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:5: error: 'fast' was not declared in this scope
    6 |     fast;
      |     ^~~~
Language: C++

#include"stdc++.h"
//#include<bits/stdc++.h>
using namespace std;
#define ll long long int
#define md 1000000007
#define pb push_back
#define pi pair<ll,ll>
#define cases ll t;cin>>t;while(t--)
ll n,k;
int main()
{
    cin>>n>>k;
    ll ar[n+5];
    ll dp[3000+5][3000+5];
    memset(dp,0,sizeof(dp));
    for(int i=0;i<n;i++)
    {
        cin>>ar[i];
        dp[i][i]=a[i];
    }
    for(int i=n-2;i>=0;i--)
        for(int j=i+1;j>=0;j--)
            dp[i][j]=max(a[i]-dp[i+1][j],a[j]-dp[i][j-1]);
    cout<<dp[0][n-1]<<endl;
    return 0;
}


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

#include <iomanip>
#include <vector>
#include <algorithm>
#include <utility>
#include <limits>
 
using namespace std;
 
int N;
vector<long long> v;
vector<vector<long long>> dp; 
long long LIM = std::numeric_limits<long long>::min();
 
long long deque(long long i, long long j)
{
  long long c = (N - (j + 1 - i)) % 2 == 0 ? 1 : -1; 
 
  if (i == j) return v[i] * c;
  if (dp[i+1][j] == LIM) dp[i+1][j] = deque(i+1, j); 
  if (dp[i][j-1] == LIM) dp[i][j-1] = deque(i, j-1);
 
  long long a = v[i]*c + dp[i+1][j];
  long long b = v[j]*c + dp[i][j-1];
 
  dp[i][j] = c < 0 ? min(a, b) : max(a, b); 
  return dp[i][j];
}
 
int main()
{
  std::ios_base::sync_with_stdio(false);
  std::cin.tie(0);
 
  std::cin >> N;
  v.resize(N);
  dp = vector<vector<long long>>(N+1, vector<long long>(N+1, LIM));
 
  for (int i = 0; i < N; ++i)
  {
    long long val;
    cin >> val;
    v[i] = val;
  }
 
  std::cout << deque(0, N-1);
 
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:32:8: error: 'cin' is not a member of 'std'
   32 |   std::cin.tie(0);
      |        ^~~
a.cc:6:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    5 | #include <limits>
  +++ |+#include <iostream>
    6 | 
a.cc:34:8: error: 'cin' is not a member of 'std'
   34 |   std::cin >> N;
      |        ^~~
a.cc:34:8: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:41:5: error: 'cin' was not declared in this scope
   41 |     cin >> val;
      |     ^~~
a.cc:41:5: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:45:8: error: 'cout' is not a member of 'std'
   45 |   std::cout << deque(0, N-1);
      |        ^~~~
a.cc:45:8: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'