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

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

int main() {
  int n, y;
  cin >> n;
  a[1][110];
  for (int i = 0; i < n; i++) {
    cin >> a[0][i];
  }
  for (int i = 0; i < n; i++) {
    cin >> a[1][i];
  }

  int res = 0;
  for (int i = 0; i < n; i++) {
    int temp = 0;
    for (int j = 0; j < i; j++) {
      temp += a[0][j];
    }
    temp += a[1][j];
    for (int j = i; j < n; j++) {
      temp += a[i][j];
    }
    
    if (temp > res) {
      res = temp;
    }
  }
  cout << res << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:3: error: 'a' was not declared in this scope
    9 |   a[1][110];
      |   ^
a.cc:23:18: error: 'j' was not declared in this scope
   23 |     temp += a[1][j];
      |                  ^
Language: C++

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

int main() {
    int n;
    cin >> n;
    int a[n], b[n];
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    for (int i = 0; i < n; i++) {
        cin >> b[i];
    }
    for (int i = 1; i < n; i++) {
        a[i] += a[i-1]
    }
    for (int i = n-2; i >= 0; i--) {
        b[i] += b[i+1];
    }
    int ans = 0;
    for (int i = 0; i < n; i++) {
        ans = max(ans, a[i] + b[i]);
    }
    cout << ans << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:23: error: expected ';' before '}' token
   16 |         a[i] += a[i-1]
      |                       ^
      |                       ;
   17 |     }
      |     ~
Language: Java

import java.util.ArrayList;
import java.util.Collections;
import java.util.Scanner;

public class Sample {

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

		int n = Integer.parseInt(sc.nextLine());
		int[][] map = new int[2][n];
		for (int i = 0; i < 2; i++) {
			String[] inputs = sc.nextLine().split(" ");
			for (int j = 0; j < n; j++) {
				map[i][j] = Integer.parseInt(inputs[j]);
			}
		}
		ArrayList<Integer> list = new ArrayList<Integer>();
		for (int i = 0; i < n; i++) {
			int count = 0;
			for (int j = 0; j <= i; j++) {
				count += map[0][j];
			}
			for (int k = i; k < n; k++) {
				count += map[1][k];
			}
			list.add(count);
		}

		System.out.println(Collections.max(list));

	}
}

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

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

int main(){
  int n; cin>>n;
  vector<vector<int>> a(2,vector<int>(n));
  
  for(int i=0;i<n;i++)cin>>a[0][i] >>a[1][i];
  
  int ans=0;
  for(int i=0;i<n;i++){
    int candies=0;
    for(int j=0;j<i;j++)candies+=a[0][j];
    for(int k=i;k<n;k++)candies+=a[1][k];
    ans=max(ans,candeis);
  }
  cout<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:17: error: 'candeis' was not declared in this scope; did you mean 'candies'?
   15 |     ans=max(ans,candeis);
      |                 ^~~~~~~
      |                 candies
Language: C++

#include <iostream>
#include <vector>
using namespace std;
 
int main(){
    int N;
    cin >> N;
 
    vector<int> A(N), B(N);
    for(int i = 0; i < N; i++)
        cin >> A[i];  
    for(int i = 0; i < N; i++)
        cin >> B[i];
 
 
    int up = 0, down = 0;
    for(int i = 1; i < N; i++)
        up += A[i];
    for(int i = 0; i < N - 1; i++)
        down += B[i];
    
    int ans = A[0];
    for(int i = 0; i < N - 1; i++){
        ans = max(ans + up, ans + down)
        ans += A[i+1];
        up -= A[i+1];
        down -= B[i];
    }   
    cout << ans + B[N-1] << endl;
 
    return 0;    
}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:40: error: expected ';' before 'ans'
   24 |         ans = max(ans + up, ans + down)
      |                                        ^
      |                                        ;
   25 |         ans += A[i+1];
      |         ~~~
Language: C++

#include <bits/stdc++.h>
#define itn int
#define rep(i, n) for(int i = 0; i < n; i++)
#define irep(i,n) for(int i = n-1; i=>0; i--)
using namespace std;
typedef long long ll;

int main() {
  int n;
  cin >> n;
  vector<pair<int,int>> v(n);
  vector<int> vf(n);
  vector<int> vs(n);
  rep(i,n){
    cin >> v[i].first >> v[i].second;
    if(i==0){
      vf[i]=v[i].first;
    }
    else{
      vf[i]=vf[i-1]+v[i].first;
    }
  }
  irep(i,n){
    if(i==n-1){
      vs[i]=v[i].second;
    }
    else{
      vs[i]=vs[i+1]+v[i].second;
    }
  }
  int max=0;
  rep(i,n){
    if(max<vf[i]+vs[i]){
      max=vf[i]+vs[i];
    }
  }
  cout << max << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:4:38: error: expected primary-expression before '>' token
    4 | #define irep(i,n) for(int i = n-1; i=>0; i--)
      |                                      ^
a.cc:23:3: note: in expansion of macro 'irep'
   23 |   irep(i,n){
      |   ^~~~
Language: C++

#include<iostream>

using namespace std;

int main(){
  int n,t,j,max;
  
  //N列（１以上１００以下の整数）
  cin>> n;
  //a[i][j](1以上１００以下の整数)
  int a[2][n];
  for(j=0;j<n;j++){
    cin>> a[0][j];
  }
  for(j=0;j<n;j++){
    cin>> a[1][j];
  }
    
  /*int x;
  max=1;
    
 for(t=0;t<n;t++){
    x=0;
  	for(j=0;j<=t;j++){
      x+=a[0][j];
    }
    for(j=t;j<n;j++){
      x+=a[1][j];
    }
    if(max<=x)
      max=x;
  }*/
  
  int x=a[0][0];
  for(j=0;j<n;j++){
  	x+=a[1][j];
  }
  max=x;
  for(t=0;t<N;t++){
  x=x+a[0][t+1]-a[1][t];
  if(x>max)
    max=x;
  }
  
  cout<< max <<endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:39:13: error: 'N' was not declared in this scope
   39 |   for(t=0;t<N;t++){
      |             ^
Language: C++

#include<iostream>
#include<vector>

using namespace std;

int main(){
  int n,t,j1,j2,max;
  
  //x[t]
  vector<int>x;
  //a[i][j]
  vector<vector<int>>a;
  
  //N列（１以上１００以下の整数）
  cin>> n;
  //a[i][j](1以上１００以下の整数)
  for(j1=1;j1<=N;j1++){
    cin>> a[1][j1];
  }
  for(j2=1;j2<=N;j2++){
    cin>> a[2][j2];
  }
  
  max=a[1][1]+a[2][1];
    
  for(t=1;t<=N;t++){
  	for(j1=1;j1<=t;j1++){
      x[t]+=a[1][j1];
    }
    for(j2=t;j2<=N;j2++){
      x[t]+=a[2][j2];
    }
    if(max<x[t])
      max=x[t];
  }
  cout<< max <<endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:16: error: 'N' was not declared in this scope
   17 |   for(j1=1;j1<=N;j1++){
      |                ^
a.cc:20:16: error: 'N' was not declared in this scope
   20 |   for(j2=1;j2<=N;j2++){
      |                ^
a.cc:26:14: error: 'N' was not declared in this scope
   26 |   for(t=1;t<=N;t++){
      |              ^
Language: C++

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

int main(){
  int N; cin >> N;
  int A[200],B[200];
  for(int i=0;i<N;i++)
    cin >> A[i] >> B[i];
  int sum[200] = {0};
  for(int i=0;i<N;i++){
    for(int j=0;j<=i;j++)
      sum += A[j];
    for(int k=i;k<N;k++)
      sum += B[k];
  }
  sort(sum,sum+N);
  cout << sum[N-1] << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:11: error: incompatible types in assignment of 'int' to 'int [200]'
   12 |       sum += A[j];
      |       ~~~~^~~~~~~
a.cc:14:11: error: incompatible types in assignment of 'int' to 'int [200]'
   14 |       sum += B[k];
      |       ~~~~^~~~~~~
Language: C++

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

template <class T> using V = vector<T>;

using ll = long long;
using db = double;
using st = string;
using ch = char;
using vll = V<ll>;
using vpll =V<pair<ll,ll>>;
using vst = V<st>;
using vdb = V<db>;
using vch = V<ch>;


#define FOR(i,a,b) for(ll i=(a);i<(ll)(b);i++)
#define rFOR(i,a,b) for(ll i=(b);i>(ll)(a);i--)
#define oFOR(i,a,b) for(ll i=(a);i<(ll)(b);i+=2)
#define bgn begin()
#define en end()
#define SORT(a) sort((a).bgn,(a).en)
#define REV(a) reverse((a).bgn,(a).en)
#define M(a,b) max(a,b)
#define rM(a,b) min(a,b)
#define fi first
#define se second
#define sz size()
#define gcd(a,b) __gcd(a,b)
#define lcm(a,b) __lcm(a,b)
#define co(a) cout<<a<<endl;
#define ci(a) cin>>a;


ll sum(ll n) {
  ll m=0;
  FOR(i,0,12){
    m+=n%10;
    n/=10;
  }
  return m;
}


/****************************************\
| Thank you for viewing my code:)        |
| Written by RedSpica a.k.a. RanseMirage |
| Twitter:@asakaakasaka                  | 
\****************************************/

signed main() {
  ll n;
  	ci(n);
  vll A(n);
  vll B(n);
  vll C(n);
  
  FOR(i,0,n){
    ci(A[i])
    if(1<=i){
      A[i]+=A[i-1];
    }
  }
  
  FOR(i,0,n){
    ci(B[i])
    if(1<=i){
      B[i]+=B[i-1];
    }
  }
  C[0]=A[0]+B[n-1];
  FOR(i,1,n){
	C[i]=A[i]+B[n-1]-B[i-1];
  }
  ll ans=0;
  FOR(i,0,n){
    ans=M(ans,C[0])
  }
  co(ans)
}

Compiler output:
a.cc: In function 'int main()':
a.cc:79:3: error: expected ';' before '}' token
   79 |   }
      |   ^
Language: C++

#include <iostream>
using namespace std;

int main() {
  int N;
  cin >> N;
  int A[2][100];
  for (int i = 0; i < 2; ++i) {
    for (int j = 0; j < N; ++j) {
      cin >> A[i][j];
    }
  }
  int max_num = 0;
  for (int i = 0; i < N; ++i) {
    int total = 0;
    for (int j = 0; j <= i; ++j) {
      total += A[0][j];
    }
    for (int k = i; k < N; ++k) {
      total += A[1][k];
    }
    if (total > max_num) {
      max_num = tatal;
    }
  }
  cout << max_num << "\n";
  return 0;
}
    
  

Compiler output:
a.cc: In function 'int main()':
a.cc:23:17: error: 'tatal' was not declared in this scope; did you mean 'total'?
   23 |       max_num = tatal;
      |                 ^~~~~
      |                 total
Language: C++

#include <iostream>
using namespace std;

int main() {
  int N;
  cin >> N;
  int A[2][100];
  for (i = 0; i < 2; ++i) {
    for (j = 0; j < N; ++j) {
      cin >> A[i][j];
    }
  }
  int max_num = 0;
  for (int i = 0; i < N; ++i) {
    int total = 0;
    for (int j = 0; j <= i; ++j) {
      total += A[0][j];
    }
    for (int k = i; k < N; ++k) {
      total += A[1][k];
    }
    if (total > max_num) {
      max_num = tatal;
    }
  }
  cout << max_num << "\n";
  return;
}
    
  

Compiler output:
a.cc: In function 'int main()':
a.cc:8:8: error: 'i' was not declared in this scope
    8 |   for (i = 0; i < 2; ++i) {
      |        ^
a.cc:9:10: error: 'j' was not declared in this scope
    9 |     for (j = 0; j < N; ++j) {
      |          ^
a.cc:23:17: error: 'tatal' was not declared in this scope; did you mean 'total'?
   23 |       max_num = tatal;
      |                 ^~~~~
      |                 total
a.cc:27:3: error: return-statement with no value, in function returning 'int' [-fpermissive]
   27 |   return;
      |   ^~~~~~
Language: C++

#include <iostream>
using namespace std;

int main() {
  int N;
  cin >> N;
  int A[2][100];
  for (i = 0; i < 2; ++i) {
    for (j = 0; j < N; ++j) {
      cin >> A[i][j];
    }
  }
  int max_num = 0;
  for (i = 0; i < N; ++i) {
    int total = 0;
    for (j = 0; j <= i; ++j) {
      total += A[0][j];
    }
    for (k = i; k < N; ++k) {
      total += A[1][k];
    }
    if (total > max_num) {
      max_num = tatal;
    }
  }
  cout << max_num << "\n";
  return;
}
    
  

Compiler output:
a.cc: In function 'int main()':
a.cc:8:8: error: 'i' was not declared in this scope
    8 |   for (i = 0; i < 2; ++i) {
      |        ^
a.cc:9:10: error: 'j' was not declared in this scope
    9 |     for (j = 0; j < N; ++j) {
      |          ^
a.cc:14:8: error: 'i' was not declared in this scope
   14 |   for (i = 0; i < N; ++i) {
      |        ^
a.cc:16:10: error: 'j' was not declared in this scope
   16 |     for (j = 0; j <= i; ++j) {
      |          ^
a.cc:19:10: error: 'k' was not declared in this scope
   19 |     for (k = i; k < N; ++k) {
      |          ^
a.cc:23:17: error: 'tatal' was not declared in this scope; did you mean 'total'?
   23 |       max_num = tatal;
      |                 ^~~~~
      |                 total
a.cc:27:3: error: return-statement with no value, in function returning 'int' [-fpermissive]
   27 |   return;
      |   ^~~~~~
Language: C++

#include <iostream>
using namespace std;

int bfs(int x, int y) {
  if (y == 2) {
    return;
  }
  if (x == N && y == 2) {
    return;
  } 
  A[y][x]
  int search1 = bfs(int x + 1, y);
  int search2 = bfs(int x, y + 1);
}

int main() {
  int N;
  cin >> N;
  int A[2][100];
  for (i = 0; i < 2; ++i) {
    for (j = 0; j < N; ++j) {
      cin >> A[i][j];
    }
  }
  int max_num = 0;
  for (i = 0; i < N; ++i) {
    int total = 0;
    for (j = 0; j <= i; ++j) {
      total += A[0][j];
    }
    for (k = i; k < N; ++k) {
      total += A[1][k];
    }
    if (total > max_num) {
      max_num = tatal;
    }
  }
  cout << max_num << "\n";
  return;
}
    
  

Compiler output:
a.cc: In function 'int bfs(int, int)':
a.cc:6:5: error: return-statement with no value, in function returning 'int' [-fpermissive]
    6 |     return;
      |     ^~~~~~
a.cc:8:12: error: 'N' was not declared in this scope
    8 |   if (x == N && y == 2) {
      |            ^
a.cc:9:5: error: return-statement with no value, in function returning 'int' [-fpermissive]
    9 |     return;
      |     ^~~~~~
a.cc:11:3: error: 'A' was not declared in this scope
   11 |   A[y][x]
      |   ^
a.cc:13:21: error: expected primary-expression before 'int'
   13 |   int search2 = bfs(int x, y + 1);
      |                     ^~~
a.cc: In function 'int main()':
a.cc:20:8: error: 'i' was not declared in this scope
   20 |   for (i = 0; i < 2; ++i) {
      |        ^
a.cc:21:10: error: 'j' was not declared in this scope
   21 |     for (j = 0; j < N; ++j) {
      |          ^
a.cc:26:8: error: 'i' was not declared in this scope
   26 |   for (i = 0; i < N; ++i) {
      |        ^
a.cc:28:10: error: 'j' was not declared in this scope
   28 |     for (j = 0; j <= i; ++j) {
      |          ^
a.cc:31:10: error: 'k' was not declared in this scope
   31 |     for (k = i; k < N; ++k) {
      |          ^
a.cc:35:17: error: 'tatal' was not declared in this scope; did you mean 'total'?
   35 |       max_num = tatal;
      |                 ^~~~~
      |                 total
a.cc:39:3: error: return-statement with no value, in function returning 'int' [-fpermissive]
   39 |   return;
      |   ^~~~~~
a.cc: In function 'int bfs(int, int)':
a.cc:14:1: warning: control reaches end of non-void function [-Wreturn-type]
   14 | }
      | ^
Language: C++

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

std::vector<int> vec, vec2, vec3;
int n;
int tmp;
int main() {
  std::cin >> n;
  vec.assign(n+1, 0);
  vec2.assign(n+1, 0);
  for (int i = 1; i <= n; i++) {
    std::cin >> tmp
    vec[i] = vec[i-1] + tmp;
  }
   for (int i = 1; i <= n; i++) {
    std::cin >> tmp
    vec2[i] = vec2[i-1] + tmp;
   }
  int t = 0;
  for (int i = 1; i <= n; i++) {
    t = vec[i] + (vec2[n] - vec2[i-1]);
    vec3.push_back(t);
  }
  std::cout << *std::max_element(vec3.begin(), vec3.end()) << std::endl;
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:20: error: expected ';' before 'vec'
   13 |     std::cin >> tmp
      |                    ^
      |                    ;
   14 |     vec[i] = vec[i-1] + tmp;
      |     ~~~             
a.cc:17:20: error: expected ';' before 'vec2'
   17 |     std::cin >> tmp
      |                    ^
      |                    ;
   18 |     vec2[i] = vec2[i-1] + tmp;
      |     ~~~~
Language: C++

#include<iostream>
using namespace std;
int main(){
	int N;
  	cin>>N;
  	int A[2][N];
  	for(int i=0;i<N;++i){
     	cin>>A[0][i];
    }
    for(int i=0;i<N;++i){
     	cin>>A[1][i];
    }
  	int max=0;
  	for(int cnt=0;cnt<N;++cnt){
      	int sum=0
  		for(int i=0;i<=cnt;++i){
    		sum+=A[0][i];
    	}
    	for(int j=cnt;j<N;++j){ 
      		sum+=A[1][j];
    	}
      if(sum>max) max=sum;
  	}
  cout<<max<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:17: error: expected ',' or ';' before 'for'
   16 |                 for(int i=0;i<=cnt;++i){
      |                 ^~~
a.cc:16:29: error: 'i' was not declared in this scope
   16 |                 for(int i=0;i<=cnt;++i){
      |                             ^
Language: C++

#include<iostream>
using namespace std;
int main(){
	int N;
  	cin>>N;
  	int A[2][N];
  	for(int i=0;i<N;++i){
     	cin>>A[0][i];
    }
    for(int i=0;i<N;++i){
     	cin>>A[1][i];
    }
  	int max=0;
  	for(int cnt=0;cnt<N;++cnt){
  		for(int i=0;i<=cnt;++i){
    		sum+=A[0][i];
    	}
    	for(int j=cnt;j<N;++j){ 
      		sum+=A[1][j];
    	}
      if(sum>max) max=sum;
  	}
  cout<<max<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:17: error: 'sum' was not declared in this scope
   16 |                 sum+=A[0][i];
      |                 ^~~
a.cc:19:17: error: 'sum' was not declared in this scope
   19 |                 sum+=A[1][j];
      |                 ^~~
a.cc:21:10: error: 'sum' was not declared in this scope
   21 |       if(sum>max) max=sum;
      |          ^~~
Language: C++

#include<iostream>
using namespace std;
int main(){
	int N;
  	cin>>N;
  	int A[2][N];
  	for(int i=0;i<N;++i){
     	cin>>A[0][i];
      	cin>>A[1][i];
    }
  	int max=0;
  	for(int cnt=0;cnt<N;++cnt){
      	int sum=A[0][0];
  		for(int i=0;i<cnt;++i){
    		sum+=A[0][i];
    	}
    	for(int j=i;j<N;++j){ 
      		sum+=A[1][j];
    	}
      if(sum>max) max=sum;
  	}
  cout<<max<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:19: error: 'i' was not declared in this scope
   17 |         for(int j=i;j<N;++j){
      |                   ^
Language: C++

#include<iosream>
using namespace std;
int main(){
	int N;
  	cin>>N;
  	int A[2][N];
  	for(int i=0;i<N;++i){
     	cin>>A[0][i];
      	cin>>A[1][i];
    }
  	int max=0;
  	for(int cnt=0;cnt<N;++cnt){
      	int sum=A[0][0];
  		for(int i=0;i<cnt;++i){
    		sum+=A[0][i];
    	}
    	for(int j=i;j<N;++j){ 
      		sum+=A[1][j];
    	}
      if(sum>max) max=sum;
  	}
  cout<<max<<endl;
}

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

#include <Stdio.h>
#include <stdlib.h>

#define QUEUE_SIZE 100000
#define next(a) (((a)+1)%QUEUE_SIZE)
#define max(a,b) ((a) > (b) ? (a) : (b))

int queue[QUEUE_SIZE];
int front;
int rear;

void init(){
	front = rear = 0;
}
void enqueue(int x){
	if(next(rear)==front){
		printf("full");
		exit(1);
	}
	queue[rear]=x;
	rear = next(rear);
}
int dequeue(){
	if(front==rear){
		printf("Nodata");
		exit(1);
	}
	int x  = queue[front];
	front = next(front);
	return x;
}
int isempty(){
	return front==rear;
}
int main(){
	int n,ans;
	scanf("%d",&n);
	int i,j,temp;
	int x,y;
	int m[2][n];
	int s[2][100]={};
	for(i=0;i<2;i++){
		for(j=0;j<n;j++)scanf("%d",&m[i][j]);
	}
	int ue[n];
	ue[0]=m[0][0];
	int sita[n];
	for(i=1;i<n;i++)ue[i]=ue[i-1]+m[0][i];
	sita[n-1]=m[1][n-1];
	for(i=n-1;i>=0;i--){
		sita[i-1]=sita[i]+m[1][i-1];
	}
	ans=sita[0]+ue[0];
	for(i=0;i<n;i++){
		ans = max(ans,(sita[i]+ue[i]));
	}
	printf("%d",ans);
	return 0;
}

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

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

int main() {
  int N, ans=0; cin >> N;
  int A1[N], A2[N];
  cin >> A1[0];
  for (int i = 1; i<N; i++) {cin >> A1[i]; A1[i]+= A1[i-1];}
  cin >> A2[0];
  for (int i = 1; i<N; i++) {cin >> A2[i]; A2[i]+= A2[i-1];}
  for (int i = 1; i<N; i++) ans = max(ans, A[i]-A[0]+B[N-1]-B[i]);
  cout << ans << "\n";
}
 

Compiler output:
a.cc: In function 'int main()':
a.cc:11:44: error: 'A' was not declared in this scope
   11 |   for (int i = 1; i<N; i++) ans = max(ans, A[i]-A[0]+B[N-1]-B[i]);
      |                                            ^
a.cc:11:54: error: 'B' was not declared in this scope
   11 |   for (int i = 1; i<N; i++) ans = max(ans, A[i]-A[0]+B[N-1]-B[i]);
      |                                                      ^
Language: C++

#include <iostream>
using namespace std;

using ll = long long;
using ull = unsigned long long;

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

int N;
int A[2][105], dp[2][105];

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

    cin >> N; 
    REP(i, 2) REP(j, N) cin >> A[i][j];

    dp[0][0] = 0;
    REP(i, 2) REP(j, N) {
        dp[i][j+1] = max(dp[i][j+1], dp[i][j]+A[i][j])

        if (i == 0) dp[i+1][j] = max(dp[i+1][j], dp[i][j]+A[i][j]);
    }

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

Compiler output:
a.cc: In function 'int main()':
a.cc:7:45: error: expected ';' before ')' token
    7 | #define REP(i, n) for (int i = 0; i < n, i++);
      |                                             ^
a.cc:16:5: note: in expansion of macro 'REP'
   16 |     REP(i, 2) REP(j, N) cin >> A[i][j];
      |     ^~~
a.cc:7:45: error: expected ';' before ')' token
    7 | #define REP(i, n) for (int i = 0; i < n, i++);
      |                                             ^
a.cc:16:15: note: in expansion of macro 'REP'
   16 |     REP(i, 2) REP(j, N) cin >> A[i][j];
      |               ^~~
a.cc:16:34: error: 'i' was not declared in this scope
   16 |     REP(i, 2) REP(j, N) cin >> A[i][j];
      |                                  ^
a.cc:16:37: error: 'j' was not declared in this scope
   16 |     REP(i, 2) REP(j, N) cin >> A[i][j];
      |                                     ^
a.cc:7:45: error: expected ';' before ')' token
    7 | #define REP(i, n) for (int i = 0; i < n, i++);
      |                                             ^
a.cc:19:5: note: in expansion of macro 'REP'
   19 |     REP(i, 2) REP(j, N) {
      |     ^~~
a.cc:7:45: error: expected ';' before ')' token
    7 | #define REP(i, n) for (int i = 0; i < n, i++);
      |                                             ^
a.cc:19:15: note: in expansion of macro 'REP'
   19 |     REP(i, 2) REP(j, N) {
      |               ^~~
Language: C++

#include <iostream>
using namespace std;

using ll = long long;
using ull = unsigned long long;

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

int N;
int A[2][105], dp[2][105];

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

    cin >> N; 
    REP(i, 2) REP(j, N) cin >> A[i][j];

    dp[0][0] = 0;
    REP(i, 2) REP(j, N) {
        dp[i][j+1] = max(dp[i][j+1], dp[i][j]+A[i][j])

        if (i == 0) dp[i+1][j] = max(dp[i+1][j], dp[i][j]+A[i][j]);
    }

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

Compiler output:
a.cc: In function 'int main()':
a.cc:7:45: error: expected ';' before ')' token
    7 | #define REP(i, n) for (int i = 0; i < n, i++)
      |                                             ^
a.cc:16:5: note: in expansion of macro 'REP'
   16 |     REP(i, 2) REP(j, N) cin >> A[i][j];
      |     ^~~
a.cc:7:45: error: expected ';' before ')' token
    7 | #define REP(i, n) for (int i = 0; i < n, i++)
      |                                             ^
a.cc:16:15: note: in expansion of macro 'REP'
   16 |     REP(i, 2) REP(j, N) cin >> A[i][j];
      |               ^~~
a.cc:7:45: error: expected ';' before ')' token
    7 | #define REP(i, n) for (int i = 0; i < n, i++)
      |                                             ^
a.cc:19:5: note: in expansion of macro 'REP'
   19 |     REP(i, 2) REP(j, N) {
      |     ^~~
a.cc:7:45: error: expected ';' before ')' token
    7 | #define REP(i, n) for (int i = 0; i < n, i++)
      |                                             ^
a.cc:19:15: note: in expansion of macro 'REP'
   19 |     REP(i, 2) REP(j, N) {
      |               ^~~
a.cc:20:55: error: expected ';' before 'if'
   20 |         dp[i][j+1] = max(dp[i][j+1], dp[i][j]+A[i][j])
      |                                                       ^
      |                                                       ;
   21 | 
   22 |         if (i == 0) dp[i+1][j] = max(dp[i+1][j], dp[i][j]+A[i][j]);
      |         ~~
Language: C++

#include<iostream>
#include<cmath>
#include<numeric>
#include<string>
#include<algorithm>
#include<vector>
#define rep(i,n) for(int i=0;i<n;i++)
#define rep1(i,n) for(int i=1;i<n;i++)
#define int64 long long
#define yokuwaruprime (10*10*10*10*10*10*10*10*10+7)
using namespace std;

int main(){
  int N;
  cin>>N;
  int a[N],b[N];
  rep(i,N){
    cin>>a[i];
  }
  rep(i,N){
    cin>>b[i];
  }
  int candy[i]={};
  rep(i,N){
    rep(j,i+1){
      candy[i]+=a[j];
    }
    for(int j=i;j<N;j++){
      candy[i]+=b[j];
    }
  }
  int max=candy[0];
  rep(i,N){
    if(max<candy[i]){
      max=candy[i];
    }
  }
  cout<<max<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:13: error: 'i' was not declared in this scope
   23 |   int candy[i]={};
      |             ^
a.cc:26:7: error: 'candy' was not declared in this scope
   26 |       candy[i]+=a[j];
      |       ^~~~~
a.cc:29:7: error: 'candy' was not declared in this scope
   29 |       candy[i]+=b[j];
      |       ^~~~~
a.cc:32:11: error: 'candy' was not declared in this scope
   32 |   int max=candy[0];
      |           ^~~~~
Language: C++

n=gets.to_i
a=[]
2.times{a<<gets.split.map(&:to_i)}

sums_1=[0]+(0...a[0].size).map{|i| a[0][0..i].inject(&:+)}
sums_2=[0]+(0...a[1].size).map{|i| a[1][0..i].inject(&:+)}
sums=[]
(1..n).each do |i|
  sums << sums_1[i] + (sums_2[-1] - sums_2[i-1])
end
puts sums.max


Compiler output:
a.cc:5:13: error: too many decimal points in number
    5 | sums_1=[0]+(0...a[0].size).map{|i| a[0][0..i].inject(&:+)}
      |             ^~~~~
a.cc:5:41: error: too many decimal points in number
    5 | sums_1=[0]+(0...a[0].size).map{|i| a[0][0..i].inject(&:+)}
      |                                         ^~~~
a.cc:6:13: error: too many decimal points in number
    6 | sums_2=[0]+(0...a[1].size).map{|i| a[1][0..i].inject(&:+)}
      |             ^~~~~
a.cc:6:41: error: too many decimal points in number
    6 | sums_2=[0]+(0...a[1].size).map{|i| a[1][0..i].inject(&:+)}
      |                                         ^~~~
a.cc:8:2: error: too many decimal points in number
    8 | (1..n).each do |i|
      |  ^~~~
a.cc:1:1: error: 'n' does not name a type
    1 | n=gets.to_i
      | ^
a.cc:5:1: error: 'sums_1' does not name a type
    5 | sums_1=[0]+(0...a[0].size).map{|i| a[0][0..i].inject(&:+)}
      | ^~~~~~
a.cc:6:1: error: 'sums_2' does not name a type
    6 | sums_2=[0]+(0...a[1].size).map{|i| a[1][0..i].inject(&:+)}
      | ^~~~~~
a.cc:7:1: error: 'sums' does not name a type
    7 | sums=[]
      | ^~~~
Language: C++

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

int main(){
    int i, n, a;
    cin >> n;
    int a[2][n];
    for(i=0; i<n; i++){
        cin >> a;
        if(i == 0){
            a[0][i] = a;
        }else{
            a[0][i] = a + a[0][i-1];
        }
    }
    for(i=0; i<n; i++){
        cin >> a;
        if(i == 0){
            a[1][i] = a + a[0][i];
        }else{
            a[1][i] = max(a[0][i], a[1][i-1]) + 1;
        }
    }
    cout << a[1][i];
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: conflicting declaration 'int a [2][n]'
    7 |     int a[2][n];
      |         ^
a.cc:5:15: note: previous declaration as 'int a'
    5 |     int i, n, a;
      |               ^
a.cc:11:14: error: invalid types 'int[int]' for array subscript
   11 |             a[0][i] = a;
      |              ^
a.cc:13:14: error: invalid types 'int[int]' for array subscript
   13 |             a[0][i] = a + a[0][i-1];
      |              ^
a.cc:13:28: error: invalid types 'int[int]' for array subscript
   13 |             a[0][i] = a + a[0][i-1];
      |                            ^
a.cc:19:14: error: invalid types 'int[int]' for array subscript
   19 |             a[1][i] = a + a[0][i];
      |              ^
a.cc:19:28: error: invalid types 'int[int]' for array subscript
   19 |             a[1][i] = a + a[0][i];
      |                            ^
a.cc:21:14: error: invalid types 'int[int]' for array subscript
   21 |             a[1][i] = max(a[0][i], a[1][i-1]) + 1;
      |              ^
a.cc:21:28: error: invalid types 'int[int]' for array subscript
   21 |             a[1][i] = max(a[0][i], a[1][i-1]) + 1;
      |                            ^
a.cc:21:37: error: invalid types 'int[int]' for array subscript
   21 |             a[1][i] = max(a[0][i], a[1][i-1]) + 1;
      |                                     ^
a.cc:24:14: error: invalid types 'int[int]' for array subscript
   24 |     cout << a[1][i];
      |              ^
Language: C++

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


int main()
{
    int N;
    cin>>N;
    vector<int> line1(N);
    for (int i=0;i<N;++i){
        cin>>line1.at(i);
    }
    vector<int> line2(N);
    for (int i=0;i<N;++i){
        cin>>line2.at(i);
    }
    int sum = line1[0];
    for (int i=0;i<N;++i){
        sum += line2[i];
    }
    int max = sum;
    for (int i=0;i<N-1;++i){
        sum = sum + line1[i+1] - line2[i];
        max = max(sum,max);
    }
    cout<<max<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:18: error: 'max' cannot be used as a function
   24 |         max = max(sum,max);
      |               ~~~^~~~~~~~~
Language: C++

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

int main(){
  int n;
  cin >> n;
  int a[n],b[n];
  for(int i=0;i<n;i++){
    cin >> a[i];
  }
  for(int i=0;i<n;i++){
    cin >> b[i];
  }
  int c[n];
  int p[n]=0;
  int q[n]=0;
  for(int i=0;i<n;i++){
    for(int j=0;j<=i;j++){
      p[i]=p[i]+a[j];
    }
  }
  for(int i=0;i<n;i++){
    for(int j=0;j<=i;j++){
      q[i]=q[i]+b[n-1-j];
    }
  }
  for(int i=0;i<n;i++){
    c[i]=p[i]+q[i];
  }
  int ans=0;
  for(int i=0;i<n;i++){
    ans=max(ans,c[i]);
  }
  cout << ans << endl;
}

  
  
    

Compiler output:
a.cc: In function 'int main()':
a.cc:16:12: error: array must be initialized with a brace-enclosed initializer
   16 |   int p[n]=0;
      |            ^
a.cc:17:12: error: array must be initialized with a brace-enclosed initializer
   17 |   int q[n]=0;
      |            ^
Language: C++

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

int main(){
    int N,M;
    cin >> N;
    int s[N],A[2][N];
	for(i = 0; i < 2; i++){
		for(j = 0; j < N; j++){
			cin >> A[i][j];
		}
	}
    for (int i=0; i<N; ++i){
        for (int j=0; j<N; ++j){
	    if(j == i) s[i] += A[0][j] + A[1][j];
            else if(j > i) s[i] += A[1][j]; 
	    else s[i] += A[0][j];
        }
        M=max(M,s[i]);
    }
    cout << M  << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:13: error: 'i' was not declared in this scope
    9 |         for(i = 0; i < 2; i++){
      |             ^
a.cc:10:21: error: 'j' was not declared in this scope
   10 |                 for(j = 0; j < N; j++){
      |                     ^
Language: C++

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

int main(){
    int N,M;
    cin >> N;
    int s[N],A[2][N];
    for (int i=0; i<N; ++i) cin >> A[0][N] >> A[1][N];
    for (int i=0; i<N; ++i){
        s[i]=0;
        for (int j=0; j<N; ++j):{
	    if(j == i) s[i] += A[0][j] + A[1][j];
            else if(j >= i) s[i] += A[1][j]; 
	    else s[i] += A[0][j];
        }
        M=max(M,s[i]);
    }
    cout <<  << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:32: error: expected primary-expression before ':' token
   12 |         for (int j=0; j<N; ++j):{
      |                                ^
a.cc:19:14: error: expected primary-expression before '<<' token
   19 |     cout <<  << endl;
      |              ^~
Language: C++

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

int main(){
    int N,M;
    cin >> N;
    int S[N],A[2][N];
    for (int i=0; i<N; ++i) cin >> A[0][N] >> A[1][N];
    for (int i=0; i<N; ++i){
        s[i]=0;
        for (int j=0; j<N; ++j):{
	    if(j == i) s[i] += A[0][j] + A[1][j];
            else if(j >= i) s[i] += A[1][j]; 
	    else s[i] += A[0][j];
        }
        M=max(M,s[i]);
    }
    cout <<  << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:9: error: 's' was not declared in this scope
   11 |         s[i]=0;
      |         ^
a.cc:12:32: error: expected primary-expression before ':' token
   12 |         for (int j=0; j<N; ++j):{
      |                                ^
a.cc:19:14: error: expected primary-expression before '<<' token
   19 |     cout <<  << endl;
      |              ^~
Language: C++

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

#define log(x) cout << (x) << endl
#define rep(i, n) for (int i = 0; i < (int)n; ++i)
using ll = long long;

#define rsum(i,j) pre[j]-(i>0?pre[i-1]:0)

int main() {

	int n;
	cin >> n;

	vi s1(n),s2(n),pre(n);
	rep (i, n) cin >> s1[i];
	rep (i, n) cin>>s2[i], pre[i]=s2[i]+(i>0?pre[i-1]:0);

	ll x = 0, y = 0, mx = -1;
	rep (i, n) {
		x += s1[i];
		y = rsum(i, n-1);
		mx = max(mx, x+y);
	}

	log(mx);

	return 0;
}





Compiler output:
a.cc: In function 'int main()':
a.cc:15:9: error: 'vi' was not declared in this scope
   15 |         vi s1(n),s2(n),pre(n);
      |         ^~
a.cc:16:27: error: 's1' was not declared in this scope; did you mean 'y1'?
   16 |         rep (i, n) cin >> s1[i];
      |                           ^~
      |                           y1
a.cc:17:25: error: 's2' was not declared in this scope
   17 |         rep (i, n) cin>>s2[i], pre[i]=s2[i]+(i>0?pre[i-1]:0);
      |                         ^~
a.cc:17:32: error: 'pre' was not declared in this scope; did you mean 'pread'?
   17 |         rep (i, n) cin>>s2[i], pre[i]=s2[i]+(i>0?pre[i-1]:0);
      |                                ^~~
      |                                pread
a.cc:21:22: error: 's1' was not declared in this scope; did you mean 'y1'?
   21 |                 x += s1[i];
      |                      ^~
      |                      y1
a.cc:8:19: error: 'pre' was not declared in this scope; did you mean 'pread'?
    8 | #define rsum(i,j) pre[j]-(i>0?pre[i-1]:0)
      |                   ^~~
a.cc:22:21: note: in expansion of macro 'rsum'
   22 |                 y = rsum(i, n-1);
      |                     ^~~~
Language: C

#include<stdio.h>

#define max(a,b) ((a)>(b)?(a):(b))

int main(){
int n,a[2][100],i;
scanf("%d",&n);
for(i=0;i<n;i++)scanf("%d",&a[0][i]);
for(i=0;i<n;i++)scanf("%d",&a[1][i]);
int b[100]={0};
for(i=0;i<n;i++){
for(j=0;j<n;j++){
if(j<=i)b[i]+=a[0][i];
else b[i]+=a[1][i];
}
}
int ans=0;
for(i=0;i<n;i++){
ans=max(ans,b[i]);
}
printf("%d\n",ans);
return 0;
}

Compiler output:
main.c: In function 'main':
main.c:12:5: error: 'j' undeclared (first use in this function)
   12 | for(j=0;j<n;j++){
      |     ^
main.c:12:5: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

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

int main() {
  int N;
  cin >> N;
  vector<int> A1(N);
  vector<int> A2(N);
  for (int i = 0; i < N; i++)
    cin >> A1.at(i);
  for (int i = 0; i < N; i++)
    cin >> A2.at(i);
  vector<int> ans(N + 1);
  for (int i = 0; i < N; i++) {
    for (int j = 0; j < N + 1; j++) {
      if (j > i)
        ans.at(i) = ans.at(i) + A2.at(j);
      else
        ans.at(i) = ans.at(i) + A1.at(j)
    }
  }
  sort(ans.begin(), ans.end());
  reverse(ans.begin(), ans.end());
  cout << ans.at(0) << endl;
}
    


Compiler output:
a.cc: In function 'int main()':
a.cc:19:41: error: expected ';' before '}' token
   19 |         ans.at(i) = ans.at(i) + A1.at(j)
      |                                         ^
      |                                         ;
   20 |     }
      |     ~
Language: Java

import java.io.File;
import java.io.IOException;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.Deque;
import java.util.List;
import java.util.Scanner;

public class Main {
 
	public static void main(String[] args) throws IOException {
		//File file = new File("input.txt");
		//Scanner in = new Scanner(file);
		
		Scanner sc = new Scanner(System.in);
		
		int N = in.nextInt();
		int[][] A = new int[2][N+1];
		for(int i = 1; i <= N; i++){
			A[0][i] = A[0][i-1] + in.nextInt();
		}
		for(int i = 1; i <= N; i++){
			A[1][i] = A[1][i-1] + in.nextInt();
		}
		
		int max = 0;
		for(int i = 1; i <= N; i++){
			int m = (A[0][i] - A[0][0]) + (A[1][N] - A[1][i-1]);
			//System.out.println((A[0][i] - A[0][0]) + " " + (A[1][N] - A[1][i-1]));
			max = Math.max(m, max);
		}
		
		System.out.println(max);
	}
}


Compiler output:
Main.java:19: error: cannot find symbol
		int N = in.nextInt();
		        ^
  symbol:   variable in
  location: class Main
Main.java:22: error: cannot find symbol
			A[0][i] = A[0][i-1] + in.nextInt();
			                      ^
  symbol:   variable in
  location: class Main
Main.java:25: error: cannot find symbol
			A[1][i] = A[1][i-1] + in.nextInt();
			                      ^
  symbol:   variable in
  location: class Main
3 errors
Language: C

#include<stdio.h>
int main(){
  int N, a, c, b = 0, d = 0, e = 0, f = 0, z;
  scanf("%d", &N);
  int A[N], B[N], C[N];
  for (int i = 0; i < N; i++)
    scanf("%d", &A[i]);
  for (int j = 0; j < N; j++)
    scanf("%d", &B[i]);
  for(int k = 0; k < N; k++){
    for (int l = 0; l < k; l++){
      a = A[l];
      b += a;
      for (int m = l; m < N; m++){
        c = B[m];
        d += c;}
    }
    z = b + d;
    if (f < z) f = z;}
  printf("%d", z);
}

Compiler output:
main.c: In function 'main':
main.c:9:20: error: 'i' undeclared (first use in this function)
    9 |     scanf("%d", &B[i]);
      |                    ^
main.c:9:20: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

N=int(input())
L1=list(map(int,input().split()))
L2=list(map(int,input().split()))

ans=0
for i in range(N):
    sum=0
    for j in range(i+1):
        sum+=L1[j]
    for k in range(i,N):
        sum+=L2[k]
    if sum>ans:
        ans=sum
print(ans)

Compiler output:
a.cc:1:1: error: 'N' does not name a type
    1 | N=int(input())
      | ^
Language: C++

#include <iostream>
#include <algorithm>

int main(){
	int N;
	cin >> N;
	int A[3][110];
	for(int i = 0; i < 2; i++){
		for(int j = 0; j < N; j++){
			cin >> A[i][j];
		}
	}

	for(int i = 0; i < N; i++){
		int sum = 0;
		for(int j = 0; j <= i; j++){
			sum += A[0][j];
		}
		for(int k = i; k < N; k++){
			sum += A[1][k];
		}
		ans = max(sum, ans);
	}

	cout << ans << endl;
	return 0;

}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |         cin >> N;
      |         ^~~
      |         std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:22:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   22 |                 ans = max(sum, ans);
      |                 ^~~
      |                 abs
a.cc:22:23: error: 'max' was not declared in this scope; did you mean 'std::max'?
   22 |                 ans = max(sum, ans);
      |                       ^~~
      |                       std::max
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: 'std::max' declared here
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
a.cc:25:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   25 |         cout << ans << endl;
      |         ^~~~
      |         std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:25:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   25 |         cout << ans << endl;
      |                 ^~~
      |                 abs
a.cc:25:24: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   25 |         cout << ans << endl;
      |                        ^~~~
      |                        std::endl
In file included from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include <iostream>

int main(){
	int N;
	cin >> N;
	int A[2][110];
	for(int i = 0; i < 2; i++){
		for(int j = 0; j < N; j++){
			cin >> A[i][j];
		}
	}

	for(int i = 0; i < N; i++){
		int sum = 0;
		for(int j = 0; j <= i; j++){
			sum += A[0][j];
		}
		for(int k = i; k < N; k++){
			sum += A[1][k];
		}
		ans = max(sum, ans);
	}

	cout << ans << endl;
	return 0;

}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |         cin >> N;
      |         ^~~
      |         std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:21:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   21 |                 ans = max(sum, ans);
      |                 ^~~
      |                 abs
a.cc:21:23: error: 'max' was not declared in this scope; did you mean 'std::max'?
   21 |                 ans = max(sum, ans);
      |                       ^~~
      |                       std::max
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:
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: 'std::max' declared here
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
a.cc:24:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   24 |         cout << ans << endl;
      |         ^~~~
      |         std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:24:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   24 |         cout << ans << endl;
      |                 ^~~
      |                 abs
a.cc:24:24: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   24 |         cout << ans << endl;
      |                        ^~~~
      |                        std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#define debug_interval ','
#define dump_interval ' '
#define debug_toggle 0
//{
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define INT_MAX LLONG_MAX
#define rep(i,n) for(int i=0;i<(n);i++)
#define rep1(i,n) for(int i=1;i<=(n);i++)
#define pb push_back
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define fi first
#define se second
#define mp make_pair
#define rev reverse
#define dans dump(ans)
 
//{
inline int toInt(string s){int v;istringstream sin(s);sin>>v;return v;}
template<class T> inline string toString(T x){ostringstream sout;sout<<x;return sout.str();}
template<class...A> inline void dump(){cout<<endl;}
template<class...A> inline void dump_rest() {cout<<endl;}
template<class T, class...A> inline void dump_rest(const T& first, const A&... rest){cout<<dump_interval<<first;dump_rest(rest...);}
template<class T,class...A> inline void dump(const T&first,const A&...rest){cout<<first;dump_rest(rest...);}
template<class...A> inline void debug(){cerr<<endl;}
template<class...A> inline void debug_rest() {cerr<<endl;}
template<class T, class...A> inline void debug_rest(const T& first, const A&... rest){cerr<<debug_interval<<first;debug_rest(rest...);}
template<class T,class...A> inline void debug(const T&first,const A&...rest){if(debug_toggle)cerr<<first,debug_rest(rest...);}
//}

typedef vector<int>vint;
typedef pair<int,int>pint;
typedef vector<pint>vpint;

template<typename A,typename B>inline void chmin(A &a,B b){if(a>b)a=b;}
template<typename A,typename B>inline void chmax(A &a,B b){if(a<b)a=b;}
template<int m>class mint{private:int i;public:mint() : i(0){}mint(int i): i((i%m+m)%m){}mint operator+(const mint& o){return o.i+i;}mint operator*(const mint& o){return o.i*i;}mint operator-(){return -i;}operator int() {return i;}};

//}
int n,m,x,y,ans;
main(){
	cin>>n;
	int a[n][2];
	rep(i,n){
		for(int j=0;j<=i;j++){
			tmp+=a[j][0];
		}
		for(int k=i;k<n;k++){
			tmp+=a[k][1];
		}
		chmax(ans,tmp);
	}
	dans;
}

Compiler output:
a.cc:8:9: warning: "INT_MAX" redefined
    8 | #define INT_MAX LLONG_MAX
      |         ^~~~~~~
In file included from /usr/include/c++/14/climits:42,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:38,
                 from a.cc:5:
/usr/lib/gcc/x86_64-linux-gnu/14/include/limits.h:120:9: note: this is the location of the previous definition
  120 | #define INT_MAX __INT_MAX__
      |         ^~~~~~~
a.cc:43:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   43 | main(){
      | ^~~~
a.cc: In function 'int main()':
a.cc:48:25: error: 'tmp' was not declared in this scope; did you mean 'tm'?
   48 |                         tmp+=a[j][0];
      |                         ^~~
      |                         tm
a.cc:51:25: error: 'tmp' was not declared in this scope; did you mean 'tm'?
   51 |                         tmp+=a[k][1];
      |                         ^~~
      |                         tm
a.cc:53:27: error: 'tmp' was not declared in this scope; did you mean 'tm'?
   53 |                 chmax(ans,tmp);
      |                           ^~~
      |                           tm
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main() {
	int N, A[2][N], ans[N];

	cin >> N;
	for (int i = 0; i < 2; i++) {
		for (int j = 0; j < N; j++) {
			cin >> A[i][j];
		}
	}

	for (int i = 0; i < N; i++) {
		ans[i] = 0;
	}
	for (int i = 0; i < N; i++) {
		for (int k = 0; k <= i; k++) {
			ans[i] = A[0, k]+ans[i];
		}
		for (int k = i + 1; k <= N; k++) {
			ans[i] = A[1, i + 1]+ans[i];
		}

	}
	sort(ans, ans + N);
	cout << ans[N - 1] << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:41: error: invalid conversion from 'int*' to 'int' [-fpermissive]
   18 |                         ans[i] = A[0, k]+ans[i];
      |                                  ~~~~~~~^~~~~~~
      |                                         |
      |                                         int*
a.cc:21:45: error: invalid conversion from 'int*' to 'int' [-fpermissive]
   21 |                         ans[i] = A[1, i + 1]+ans[i];
      |                                  ~~~~~~~~~~~^~~~~~~
      |                                             |
      |                                             int*
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main() {
	int N, A[2][N], ans[N];

	cin >> N;
	for (int i = 0; i < 2; i++) {
		for (int j = 0; j < N; j++) {
			cin >> A[i][j];
		}
	}

	for (int i = 0; i < N; i++) {
		ans[i] = 0;
	}
	for (int i = 0; i < N; i++) {
		for (int k = 0; k <= i; k++) {
			ans[i] += A[0, k];
		}
		for (int k = i + 1; k <= N; k++) {
			ans[i] += A[1, i + 1];
		}

	}
	sort(ans, ans + N);
	cout << ans[N - 1] << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:32: error: invalid conversion from 'int*' to 'int' [-fpermissive]
   18 |                         ans[i] += A[0, k];
      |                         ~~~~~~~^~~~~~~~~~
      |                                |
      |                                int*
a.cc:21:32: error: invalid conversion from 'int*' to 'int' [-fpermissive]
   21 |                         ans[i] += A[1, i + 1];
      |                         ~~~~~~~^~~~~~~~~~~~~~
      |                                |
      |                                int*
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int N;
  cin >> N;
  int A[2][N];
  for(int i=1;i<=N;i++){cin >> A[1][i];}
  for(int i=1;i<=N;i++){cin >> A[2][i];}
  int S[N];
  int ans=0;
  for(int i=1;i<=N;i++){
    for(int j=1;j<=i;j++){S[i]+=A[1][j];}
    for(int k=j;k<=N;k++){S[i]+=A[2][k];}
    if(ans<S[i]){ans=S[i];}
  }
  cout << ans << endl;
}
  

Compiler output:
a.cc: In function 'int main()':
a.cc:14:15: error: 'j' was not declared in this scope
   14 |     for(int k=j;k<=N;k++){S[i]+=A[2][k];}
      |               ^