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

#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
#define int long long
#define mkp make_pair
#define pb push_back
#define ff first
#define ss second
#define debug1(a) cout<<a<<endl;
#define debug2(a,b) cout<<a<<' '<<b<<endl;
#define debug3(a,b,c) cout<<a<' '<<b<<' '<<c<<endl;
#define rep(i,n) for(int i=0;i<n;i++)
#define repr(i,a,b)for(int i=a;i<b;i++)
#define repre(i,a,b)for(int i=a;i<=b;i++)
#define pi pair<int,int>
#define pii pair<int,pi>
//#define mp map<int,int>
//#define ump unordered_map<int,int>
#define st set<int>
#define mst multiset<int>
#define fastio ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
using namespace __gnu_pbds;
using namespace std;
typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> orderedSet;
typedef tree<int,null_type,less_equal<int>,rb_tree_tag,tree_order_statistics_node_update> orderedMSet;
//*p.find_by_order(index) return value at index
//p.order_of_key(key) return index
int32_t main()
{
   fastio
int a; in a;
cout<<(3*a*a);
   return 0;
}


Compiler output:
a.cc: In function 'int32_t main()':
a.cc:31:8: error: 'in' was not declared in this scope; did you mean 'yn'?
   31 | int a; in a;
      |        ^~
      |        yn
Language: C++

#include<bits/stdc++>
using namespace std;
int main(){
  int a;
  cin>>a;
  cout << 3*a*a <<endl;
}

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

#include <bits/stdc++.h>
#define int int64_t
using namespace std;
typedef pair<int, int> P;
const int INF = 100000000;

// グローバル変数


// 関数：


signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	int r;
    cin >> r;
    cout << 3*r^3 << endl;
	
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:19: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
   18 |     cout << 3*r^3 << endl;
      |                 ~~^~~~~~~
Language: C++

#include <cstio>

int main() {
	int r;
	scanf("%d", &r);
	printf("%d\n", 3 * r * r);
	return 0;
}

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

/*
				C++
				encoding: UTF-8
				Modified: <20/Jul/2019 05:31:24 PM>

				✪ H4WK3yE乡
				Mohd. Farhan Tahir
				Indian Institute Of Information Technology (IIIT), Gwalior
*/

#include <bits/stdc++.h>
#ifndef ONLINE_JUDGE
#	include <prettyprint.hpp>
#endif

using namespace std;

// clang-format off

#define         ll                     long long
#define         mod                    1000000007
#define         ve                     vector
#define         pb                     push_back
#define         endl                   "\n";
#define         ff                     first
#define         ss                     second
#define         pii                    pair<int, int>
#define         len(v)                 int(v.size())
#define         all(v)                 v.begin(), v.end()
#define         reset(a, b)            memset(a, b, sizeof(a));
#define         fr(i, s, n)            for (ll i = s ; i < n ; ++i)
#define         dfr(i, s, n)           for (ll i = s ; i > n ; --i)
#define         prv(v, s, n)           fr(i, s, n) cout<<v[i]<<" "; cout<<"\n"

void print (string sep = "\n") {
    cout << sep;
}

template < typename T, typename... TAIL > void print (const T& t, TAIL... tail) {
    cout << t << " ";
    print (tail...);
}

// clang-format on


signed main () {
	ios_base::sync_with_stdio (false), cin.tie (nullptr);
	int r;
	cin >> r;
	int area = 3 * r * r;
	print (area);
	return 0;
}


Compiler output:
a.cc:13:17: fatal error: prettyprint.hpp: No such file or directory
   13 | #       include <prettyprint.hpp>
      |                 ^~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<bits/stdc++.h>

int main() {

    int r;
    cin >> r;
    cout << 3 * r* r; << endl;

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:5: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |     cin >> r;
      |     ^~~
      |     std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:7:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |     cout << 3 * r* r; << 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:7:23: error: expected primary-expression before '<<' token
    7 |     cout << 3 * r* r; << endl;
      |                       ^~
a.cc:7:26: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    7 |     cout << 3 * r* r; << endl;
      |                          ^~~~
      |                          std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include<stdio.h>
int main()
{
  int r;
  cin >> r ;
  cout << 3*r**2 << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope
    5 |   cin >> r ;
      |   ^~~
a.cc:6:3: error: 'cout' was not declared in this scope
    6 |   cout << 3*r**2 << endl;
      |   ^~~~
a.cc:6:15: error: invalid type argument of unary '*' (have 'int')
    6 |   cout << 3*r**2 << endl;
      |               ^~
a.cc:6:21: error: 'endl' was not declared in this scope
    6 |   cout << 3*r**2 << endl;
      |                     ^~~~
Language: C++

#include<iostream>
int main(){
  int c; cin>>c;
  cout<<c*c*3<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:10: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    3 |   int c; cin>>c;
      |          ^~~
      |          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:4:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    4 |   cout<<c*c*3<<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:4:16: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    4 |   cout<<c*c*3<<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>
#include <cstdio>
#include <algorithm>
#include <vector>
#include <map>
#include <bits/stdc++.h>
using namespace std;

int main()
{
    int a
    cin >> a;
    cout << 3*a*a << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:5: error: expected initializer before 'cin'
   12 |     cin >> a;
      |     ^~~
a.cc:13:15: error: 'a' was not declared in this scope
   13 |     cout << 3*a*a << endl;
      |               ^
Language: C++

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

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

	cin>>r;
	cour<<r*r*3;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:9: error: 'cour' was not declared in this scope
   10 |         cour<<r*r*3;
      |         ^~~~
Language: C++

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef pair<int,int> P;

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

    ll r; cin >> r;
    cout << 3*r*r << endl;

    return 0;

}#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef pair<int,int> P;

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

    ll r; cin >> r;
    cout << 3*r*r << endl;

    return 0;

}

Compiler output:
a.cc:16:2: error: stray '#' in program
   16 | }#include <bits/stdc++.h>
      |  ^
a.cc:16:3: error: 'include' does not name a type
   16 | }#include <bits/stdc++.h>
      |   ^~~~~~~
a.cc:22:5: error: redefinition of 'int main()'
   22 | int main() {
      |     ^~~~
a.cc:7:5: note: 'int main()' previously defined here
    7 | int main() {
      |     ^~~~
Language: C

#include <bits/stdc++.h>

using namespace std;

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

int main(){
  int n;
  cin >> n;
  cout << 3 * n * n << endl;
  return 0;
}

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

#include <iostream>
#include <vector>
#include <algorithm>
#include <map>
#include <tuple>
#include <cstdio>

using namespace std;
int main() {
    int r;
    cin >> r;

    cout << 3*r*r << endkl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:22: error: 'endkl' was not declared in this scope
   13 |     cout << 3*r*r << endkl;
      |                      ^~~~~
Language: C++

#include<iostream>
#include<string>
#include<cstdio>
#include<vector>
#include<map>
#include <algorithm>
#include<cstdlib>
#include<cmath>
#include<deque>
#include <numeric>
#include<valarray>
typedef unsigned long long ull;
typedef  long long ll;

int main() {
	ll a;
	std::cin >> a;
	std::cout << 3 * a *a　<<std::endl;
	return 0;
}


Compiler output:
a.cc:18:29: error: extended character 　 is not valid in an identifier
   18 |         std::cout << 3 * a *a　<<std::endl;
      |                             ^
a.cc: In function 'int main()':
a.cc:18:29: error: 'a\U00003000' was not declared in this scope
   18 |         std::cout << 3 * a *a　<<std::endl;
      |                             ^~~
Language: Java


import java.util.*;

public class App {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        System.out.println(N*N*3);
    }
}

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

#include<iostream>
int main()
{
  int r;
  cin>>r;
  cout<<3*r*r<<'\n;
}

Compiler output:
a.cc:6:16: warning: missing terminating ' character
    6 |   cout<<3*r*r<<'\n;
      |                ^
a.cc:6:16: error: missing terminating ' character
    6 |   cout<<3*r*r<<'\n;
      |                ^~~~
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |   cin>>r;
      |   ^~~
      |   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:6:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    6 |   cout<<3*r*r<<'\n;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:7:1: error: expected primary-expression before '}' token
    7 | }
      | ^
Language: C++

#include <iostream>
using namespace std;

int main() {
    int T;
    cin >> T:
   cout << 3*T*T;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:13: error: found ':' in nested-name-specifier, expected '::'
    6 |     cin >> T:
      |             ^
      |             ::
a.cc:6:12: error: 'T' is not a class, namespace, or enumeration
    6 |     cin >> T:
      |            ^
Language: C++

#include <iostream>
using namespace std;
signed main() {
  long long r; cin >> t;
  cout << 3 * r * r;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:23: error: 't' was not declared in this scope
    4 |   long long r; cin >> t;
      |                       ^
Language: C++

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

ll modpow(ll a, ll b, ll n){
    ll x=1, y=a; 
    while (b > 0) {
        if (b%2 == 1) {
            x = (x*y) % n; // multiplying with base
        }
        y = (y*y) % n; // squaring the base
        b /= 2;
    }
    return x % n;
}
 
 
int main(){
 
	
	
	int n ; cin>>n;
	cout<<3*modpow(n,2);
	
	
	
	
}

Compiler output:
a.cc: In function 'int main()':
a.cc:25:23: error: too few arguments to function 'll modpow(ll, ll, ll)'
   25 |         cout<<3*modpow(n,2);
      |                 ~~~~~~^~~~~
a.cc:7:4: note: declared here
    7 | ll modpow(ll a, ll b, ll n){
      |    ^~~~~~
Language: C++

#include <iostream>

using namespace std;

int main(){
    int r;
    cin >>r;
    cout <<3*r*r;
    return 0
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:13: error: expected ';' before '}' token
    9 |     return 0
      |             ^
      |             ;
   10 | }
      | ~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int const MAXN=1010;

int main(){
	cin>>n;
	cout<<3*n*n;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:14: error: 'n' was not declared in this scope; did you mean 'yn'?
    6 |         cin>>n;
      |              ^
      |              yn
Language: C++

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

int main(){
    int n;
    cin >> n;
  　 cout << 3*n*n << endl;
}


Compiler output:
a.cc:10:3: error: extended character 　 is not valid in an identifier
   10 |   　 cout << 3*n*n << endl;
      |   ^
a.cc: In function 'int main()':
a.cc:10:3: error: '\U00003000' was not declared in this scope
   10 |   　 cout << 3*n*n << endl;
      |   ^~
Language: C++

int main() {
    int r;
    cin >> r;
    cout << 3 * a * a << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:5: error: 'cin' was not declared in this scope
    3 |     cin >> r;
      |     ^~~
a.cc:4:5: error: 'cout' was not declared in this scope
    4 |     cout << 3 * a * a << endl;
      |     ^~~~
a.cc:4:17: error: 'a' was not declared in this scope
    4 |     cout << 3 * a * a << endl;
      |                 ^
a.cc:4:26: error: 'endl' was not declared in this scope
    4 |     cout << 3 * a * a << endl;
      |                          ^~~~
Language: C++

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

int main() {
    int r; cin >> r;
    cout << 3 * r * r << ednl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:26: error: 'ednl' was not declared in this scope
    6 |     cout << 3 * r * r << ednl;
      |                          ^~~~
Language: C++

#[allow(unused_macros)]
macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        let mut next = || { iter.next().unwrap() };
        input_inner!{next, $($r)*}
    };
    ($($r:tt)*) => {
        let stdin = std::io::stdin();
        let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock()));
        let mut next = move || -> String{
            bytes
                .by_ref()
                .map(|r|r.unwrap() as char)
                .skip_while(|c|c.is_whitespace())
                .take_while(|c|!c.is_whitespace())
                .collect()
        };
        input_inner!{next, $($r)*}
    };
}

#[allow(unused_macros)]
macro_rules! input_inner {
    ($next:expr) => {};
    ($next:expr, ) => {};

    ($next:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($next, $t);
        input_inner!{$next $($r)*}
    };

    ($next:expr, mut $var:ident : $t:tt $($r:tt)*) => {
        let mut $var = read_value!($next, $t);
        input_inner!{$next $($r)*}
    };
}

#[allow(unused_macros)]
macro_rules! read_value {
    ($next:expr, ( $($t:tt),* )) => {
        ( $(read_value!($next, $t)),* )
    };

    ($next:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()
    };

    ($next:expr, chars) => {
        read_value!($next, String).chars().collect::<Vec<char>>()
    };

    ($next:expr, bytes) => {
        read_value!($next, String).into_bytes()
    };

    ($next:expr, usize1) => {
        read_value!($next, usize) - 1
    };

    ($next:expr, $t:ty) => {
        $next().parse::<$t>().expect("Parse error")
    };
}

fn main() {
    input! {
        r: i64,
    }

    let ans = 3 * r * r;

    println!("{}", ans);
}


Compiler output:
a.cc:1:2: error: invalid preprocessing directive #[
    1 | #[allow(unused_macros)]
      |  ^
a.cc:23:2: error: invalid preprocessing directive #[
   23 | #[allow(unused_macros)]
      |  ^
a.cc:39:2: error: invalid preprocessing directive #[
   39 | #[allow(unused_macros)]
      |  ^
a.cc:46:10: error: too many decimal points in number
   46 |         (0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()
      |          ^~~~~~~
a.cc:2:1: error: 'macro_rules' does not name a type
    2 | macro_rules! input {
      | ^~~~~~~~~~~
a.cc:24:1: error: 'macro_rules' does not name a type
   24 | macro_rules! input_inner {
      | ^~~~~~~~~~~
a.cc:40:1: error: 'macro_rules' does not name a type
   40 | macro_rules! read_value {
      | ^~~~~~~~~~~
a.cc:66:1: error: 'fn' does not name a type
   66 | fn main() {
      | ^~
Language: C++

#include <iostream>
#include <string>
#include <queue>
#include <stack>
#include <algorithm>
#include <list>
#include <vector>
#include <complex>
#include <utility>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <climits>
#include <bitset>
#include <ctime>
#include <map>
#include <unordered_map>
#include <set>
#include <unordered_set>
#include <cassert>
#include <cstddef>
#include <iomanip>
#include <numeric>
#include <tuple>
#include <sstream>
#include <fstream>
#include <functional>

using namespace std;
#define REP(i, n) for (int (i) = 0; (i) < (n); (i)++)
#define FOR(i, a, b) for (int (i) = (a); (i) < (b); (i)++)
#define RREP(i, a) for(int (i) = (a) - 1; (i) >= 0; (i)--)
#define FORR(i, a, b) for(int (i) = (a) - 1; (i) >= (b); (i)--)
#define DEBUG(C) cerr << #C << " = " << C << endl;
using LL = long long;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<LL>;
using VVL = vector<VL>;
using VD = vector<double>;
using VVD = vector<VD>;
using PII = pair<int, int>;
using PDD = pair<double, double>;
using PLL = pair<LL, LL>;
using VPII = vector<PII>;
template<typename T> using VT = vector<T>;
#define ALL(a) begin((a)), end((a))
#define RALL(a) rbegin((a)), rend((a))
#define SORT(a) sort(ALL((a)))
#define RSORT(a) sort(RALL((a)))
#define REVERSE(a) reverse(ALL((a)))
#define MP make_pair
#define FORE(a, b) for (auto &&a : (b))
#define EB emplace_back
#define GREATER(T) T, VT<T> greater<T>
template<typename T> inline bool chmax(T &a, T b){if (a < b){a = b;return true;}return false;}
template<typename T> inline bool chmin(T &a, T b){if (a > b){a = b;return true;}return false;}

const int INF = 1e9;
const int MOD = INF + 7;
const LL LLINF = 1e18;

int main(void) {
    int R;
    cin >> R;
    cout << 3 * r * r << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:67:17: error: 'r' was not declared in this scope
   67 |     cout << 3 * r * r << endl;
      |                 ^
Language: C++

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

int main(){
	int R;
	cin >> R;
	int ans = 3 * R * R;
	cout << ans << endl;

Compiler output:
a.cc: In function 'int main()':
a.cc:8:29: error: expected '}' at end of input
    8 |         cout << ans << endl;
      |                             ^
a.cc:4:11: note: to match this '{'
    4 | int main(){
      |           ^
Language: C++

using System;
using System.IO;
using System.Linq;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using static System.Math;
using Debug = System.Diagnostics.Debug;

static class P
{
    static void Main()
    {
        var r = int.Parse(Console.ReadLine());
        Console.WriteLine(3 * r * r);
    }
}


Compiler output:
a.cc:1:7: error: expected nested-name-specifier before 'System'
    1 | using System;
      |       ^~~~~~
a.cc:2:7: error: expected nested-name-specifier before 'System'
    2 | using System.IO;
      |       ^~~~~~
a.cc:3:7: error: expected nested-name-specifier before 'System'
    3 | using System.Linq;
      |       ^~~~~~
a.cc:4:7: error: expected nested-name-specifier before 'System'
    4 | using System.Collections.Generic;
      |       ^~~~~~
a.cc:5:7: error: expected nested-name-specifier before 'System'
    5 | using System.Text;
      |       ^~~~~~
a.cc:6:7: error: expected nested-name-specifier before 'System'
    6 | using System.Text.RegularExpressions;
      |       ^~~~~~
a.cc:7:7: error: expected nested-name-specifier before 'System'
    7 | using System.Threading;
      |       ^~~~~~
a.cc:8:7: error: expected nested-name-specifier before 'static'
    8 | using static System.Math;
      |       ^~~~~~
a.cc:9:15: error: 'System' does not name a type
    9 | using Debug = System.Diagnostics.Debug;
      |               ^~~~~~
a.cc:18:2: error: expected ';' after class definition
   18 | }
      |  ^
      |  ;
a.cc: In static member function 'static void P::Main()':
a.cc:15:9: error: 'var' was not declared in this scope
   15 |         var r = int.Parse(Console.ReadLine());
      |         ^~~
a.cc:16:9: error: 'Console' was not declared in this scope
   16 |         Console.WriteLine(3 * r * r);
      |         ^~~~~~~
a.cc:16:31: error: 'r' was not declared in this scope
   16 |         Console.WriteLine(3 * r * r);
      |                               ^
a.cc: At global scope:
a.cc:11:1: error: a storage class can only be specified for objects and functions
   11 | static class P
      | ^~~~~~
Language: C++

#include<iostream> using namespace std; int main() {int a,b; cin>>a>>b; float c=(a-b-1)*(1.0)/(b*2+1);c*=100; int d=c; d%100 < 50 ?cout<<d/100 + 1:cout<<d/100 + 2;}


Compiler output:
a.cc:1:20: warning: extra tokens at end of #include directive
    1 | #include<iostream> using namespace std; int main() {int a,b; cin>>a>>b; float c=(a-b-1)*(1.0)/(b*2+1);c*=100; int d=c; d%100 < 50 ?cout<<d/100 + 1:cout<<d/100 + 2;}
      |                    ^~~~~
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

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

//type
#define ll long long
typedef pair<int, int> P;
//定数
#define INF 1000000000000 //10^12:∞
#define MOD 1000000007    //10^9+7:合同式の法
#define MAXR 100000       //10^5:配列の最大のrange
//略記
#define PB push_back //挿入
#define MP make_pair //pairのコンストラクタ
#define F first      //pairの一つ目の要素
#define S second     //pairの二つ目の要素
#define Z class
// OTHER
// xの二乗を返す (関数テンプレート版)
template <typename T>
T square(T x) { return x * x; }
#define chmax(x, y) (x = max(x, y))
#define chmin(x, y) (x = min(x, y))
// loop
#define rep(i, n) for (int i = 0; i < (n); i++)
#define REPD(i, n) for (ll i = n - 1; i >= 0; i--)
#define FOR(i, a, b) for (ll i = a; i <= ll(b); i++)
#define FORD(i, a, b) for (ll i = a; i >= ll(b); i--)
#define FORA(i, I) for (const auto &i : I)

// vector
#define ALL(x) x.begin(), x.end()

// output
#define YES() printf("YES\n")
#define NO() printf("NO\n")
#define isYES(x) printf("%s\n", (x) ? "YES" : "NO")
#define Yes() printf("Yes\n")
#define No() printf("No\n")
#define ln cout << '\n'
template <Z A>
void pr(A a)
{
  cout << a;
  ln;
}
template <Z A, Z B>
void pr(A a, B b)
{
  cout << a << ' ';
  pr(b);
}

int ans = 0;
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

int main()
{

  int a, b;
  cin >> a >> b;14 3

  int ans = b * 2 + 1;
  if (a % ans == 0)
    pr(a / ans);
  else
    pr(a /ans + 1);

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:61:19: error: expected ';' before numeric constant
   61 |   cin >> a >> b;14 3
      |                   ^~
      |                   ;
Language: C++

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

//type
#define ll long long
typedef pair<int, int> P;
//定数
#define INF 1000000000000 //10^12:∞
#define MOD 1000000007    //10^9+7:合同式の法
#define MAXR 100000       //10^5:配列の最大のrange
//略記
#define PB push_back //挿入
#define MP make_pair //pairのコンストラクタ
#define F first      //pairの一つ目の要素
#define S second     //pairの二つ目の要素
#define Z class
// OTHER
// xの二乗を返す (関数テンプレート版)
template <typename T>
T square(T x) { return x * x; }
#define chmax(x, y) (x = max(x, y))
#define chmin(x, y) (x = min(x, y))
// loop
#define rep(i, n) for (int i = 0; i < (n); i++)
#define REPD(i, n) for (ll i = n - 1; i >= 0; i--)
#define FOR(i, a, b) for (ll i = a; i <= ll(b); i++)
#define FORD(i, a, b) for (ll i = a; i >= ll(b); i--)
#define FORA(i, I) for (const auto &i : I)

// vector
#define ALL(x) x.begin(), x.end()

// output
#define YES() printf("YES\n")
#define NO() printf("NO\n")
#define isYES(x) printf("%s\n", (x) ? "YES" : "NO")
#define Yes() printf("Yes\n")
#define No() printf("No\n")
#define ln cout << '\n'
template <Z A>
void pr(A a)
{
  cout << a;
  ln;
}
template <Z A, Z B>
void pr(A a, B b)
{
  cout << a << ' ';
  pr(b);
}

int ans = 0;
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

int main()
{

  int a, b;
  cin >> a >> b;14 3

  int ans = b * 2 + 1;
  if (a % ans == 0)
    pr(a / ans);
  else
    pr(a % ans + 1);

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:61:19: error: expected ';' before numeric constant
   61 |   cin >> a >> b;14 3
      |                   ^~
      |                   ;
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int n,d;
  cin>>n>>d;
  if(n%(2*d+1)==0){
    cout<<n/(2*d+1)<<endl;
  }else if(n%(2*d+1)>0){
    cout<<(n/(2*d+1))+1<,endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:25: error: expected primary-expression before ',' token
    9 |     cout<<(n/(2*d+1))+1<,endl;
      |                         ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int n,d;
  cin>>n>>d;
  int ans=0;
  if(n%(2*d+1)==0){
    cout<<n/(2*d+1)<<endl;
  }else if(n%(2*d+1)>0){
    cout<<(n/(2*d+1))+1<,endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:25: error: expected primary-expression before ',' token
   10 |     cout<<(n/(2*d+1))+1<,endl;
      |                         ^
Language: C

#niclude<stdio.h>
int main(){
  int n,d;
  scanf("%d%d",&n,&d);
  int k;
  k=2*d+1;
  if(n%k==0)
    printf("%d",n/k);
  else
    printf("%d",n/k+1);
}

Compiler output:
main.c:1:2: error: invalid preprocessing directive #niclude; did you mean #include?
    1 | #niclude<stdio.h>
      |  ^~~~~~~
      |  include
main.c: In function 'main':
main.c:4:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    4 |   scanf("%d%d",&n,&d);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | #niclude<stdio.h>
main.c:4:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    4 |   scanf("%d%d",&n,&d);
      |   ^~~~~
main.c:4:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:8:5: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    8 |     printf("%d",n/k);
      |     ^~~~~~
main.c:8:5: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:8:5: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:8:5: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:10:5: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
   10 |     printf("%d",n/k+1);
      |     ^~~~~~
main.c:10:5: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C++

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

int main() {
    int n,d;
    cin >> n >> d; 
    int ans = (n + d * 2) / (d * 2 + 1);
    cout << ans << endl;
}　　　　

Compiler output:
a.cc:9:2: error: extended character 　 is not valid in an identifier
    9 | }　　　　
      |  ^
a.cc:9:2: error: extended character 　 is not valid in an identifier
a.cc:9:2: error: extended character 　 is not valid in an identifier
a.cc:9:2: error: extended character 　 is not valid in an identifier
a.cc:9:2: error: '\U00003000\U00003000\U00003000\U00003000' does not name a type
    9 | }　　　　
      |  ^~~~~~~~
Language: C++

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

int main() {
    int n,d;
    cin >> n >> d; 
    ans = (n + d * 2) / (D * 2 + 1);
    cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:5: error: 'ans' was not declared in this scope; did you mean 'abs'?
    7 |     ans = (n + d * 2) / (D * 2 + 1);
      |     ^~~
      |     abs
a.cc:7:26: error: 'D' was not declared in this scope
    7 |     ans = (n + d * 2) / (D * 2 + 1);
      |                          ^
Language: Java

import java.util.Scanner;
import java.math.BigDecimal;
import java.math.RoundingMode;
public class Main {
    public static void main(String[] args) {
    
    　Scanner sc = new Scanner(System.in);
      
      //入力
      double N = sc.nextDouble();//木の本数
      double D = sc.nextDouble();
      
      //1人の監視員が監視できる範囲
      double one = (D*2.0)+1.0;
      
      //監視員が最低何人必要か求める
      double min = N/one;
      
      
       //BigDecimalクラスを利用して小数点以下すべて切り上げ
          //BigDecimal min1 = new BigDecimal(String.valueOf(min));
          //double ans = min.setScale(0, RoundingMode.UP);
       BigDecimal min1 = new BigDecimal(min);  	
       BigDecimal ans = min1.setScale(0, BigDecimal.ROUND_UP);
       System.out.println(ans);
    }
}

Compiler output:
Main.java:7: error: illegal character: '\u3000'
    ?Scanner sc = new Scanner(System.in);
    ^
1 error
Language: C++

#include <bits/stdc++.h>
#define rep(i, n) for (ll i = 0; i < (ll)(n); ++i)
#define rep2(i, s, n) for (ll i = s; i < (ll)(n); i++)
#define repr(i, n) for (ll i = n; i >= 0; i--)
#define pb push_back
#define COUT(x) cout << (x) << endl
#define COUTF(x) cout << setprecision(15) << (x) << endl
#define ENDL cout << endl
#define DF(x) x.erase(x.begin())  // 先頭文字削除
#define ALL(x) x.begin(), x.end()
#define SORT(x) sort(ALL(x))
#define REVERSE(x) reverse(ALL(x))
#ifdef _DEBUG
#define debug(x) cout << "[debug] " << #x << ": " << x << endl
#else
#define debug(x)
#endif
using namespace std;
using ll = long long;
using ld = long double;
using vll = vector<ll>;
using P = pair<ll, ll>;
constexpr ll INF = 0x3f3f3f3f3f3f3f3f;
constexpr double PI = 3.141592653589793238462643383279;
ll getDigit(ll x) {
  return x == 0 ? 1 : log10(x) + 1;
}

ll gcd(ll x, ll y) {
  return y ? gcd(y, x % y) : x;
}

ll lcm(ll a, ll b) {
  return a / gcd(a, b) * b;
}

vector<P> factorize(ll n) {
  vector<P> result;
  for (ll i = 2; i * i <= n; ++i) {
    if (n % i == 0) {
      result.pb({i, 0});
      while (n % i == 0) {
        n /= i;
        result.back().second++;
      }
    }
  }
  if (n != 1) {
    result.pb({n, 1});
  }
  return result;
}

template <class T>
inline bool chmin(T& a, T b) {
  if (a > b) {
    a = b;
    return true;
  }
  return false;
}
template <class T>
inline bool chmax(T& a, T b) {
  if (a < b) {
    a = b;
    return true;
  }
  return false;
}

template <typename T>
void debugV(const vector<T> v) {
#ifdef _DEBUG
  rep(i, v.size()) {
    cout << i << ":" << v[i] << " ";
  }
  cout << endl;
#else
  (void)v;
#endif
}

signed main() {
  ll N, D;
  cin >> N >> D;
  D = D * 2 + 1;

  if (N % D == 0) {
    COUT(N / d);
  } else {
    COUT(N / d + 1);
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:89:14: error: 'd' was not declared in this scope
   89 |     COUT(N / d);
      |              ^
a.cc:6:26: note: in definition of macro 'COUT'
    6 | #define COUT(x) cout << (x) << endl
      |                          ^
a.cc:91:14: error: 'd' was not declared in this scope
   91 |     COUT(N / d + 1);
      |              ^
a.cc:6:26: note: in definition of macro 'COUT'
    6 | #define COUT(x) cout << (x) << endl
      |                          ^
Language: C++

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

int main() {
  int N,D,ans;
  cin >> N >> B;
  ans=(N+2*D+1)/(2*D+2);
  cout << ans;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:15: error: 'B' was not declared in this scope
    6 |   cin >> N >> B;
      |               ^
Language: C++

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

int main() {
  int N,D,ans;
  cin >> N >> B;
  ans=(N+2*D+1)/(2*D+2);
  cout << 
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:15: error: 'B' was not declared in this scope
    6 |   cin >> N >> B;
      |               ^
a.cc:9:1: error: expected primary-expression before '}' token
    9 | }
      | ^
Language: C

#include <stdio.h>
#include <math.h>
int main(void) {
    float wood,range;
    scanf("%f",wood);
    scanf("%f",range);
    range=range*2+1;/*観測範囲*/
    int ans=ceil(wood/range)/*本数<範囲*人数*/
    printf("%d\n",ans)
    
}


Compiler output:
main.c: In function 'main':
main.c:9:5: error: expected ',' or ';' before 'printf'
    9 |     printf("%d\n",ans)
      |     ^~~~~~
main.c:11:1: error: expected declaration or statement at end of input
   11 | }
      | ^
Language: C

// 課題4_1 AtCoder Beginner Contest 134 B - GoldenApple
// nk777
 
#include<stdio.h>
#include<math.h>
 
int main(void){
    // 林檎の木n_tree本、(監視できる本数)/2-0.5を表すd_watch、結果の格納result
    int n_tree, d_watch, result;
 
    // n_tree, d_watchを受け取る
    scanf("%d %d", &n_tree, &d_watch,);
 
    // 監視員が見れる木の本数
    d_watch = d_watch * 2 + 1;
    // 木の本数を監視できる木の本数で割ったものを小数第1位で切り上げたものが監視員の本数
    result = ceil((double)n_tree / (double)d_watch);

    printf("%d\n", result);
    
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:12:38: error: expected expression before ')' token
   12 |     scanf("%d %d", &n_tree, &d_watch,);
      |                                      ^
Language: C

/* ex4_1
   takafumi_ueki */
#include <stdio.h>
#include <math.h>
int main(void){
    double tree_num,watch_num,tree_range;
    int min_num;
    //tree_num(木の本数)とwatch_num(監視員の数)を受け取る
    scanf("%lf %lf",&tree_num,&watch_num);
    //監視員が見れる木の本数を計算する
    tree_range = 2*watch_num + 1;
    //「全ての木の本数」を「監視員が見れる木の本数」で割り、割り切れない場合は一人追加する
    min_num = ceil(tree_num/tree_range);
    printf("%d\n",count);
    return 0;
}


Compiler output:
main.c: In function 'main':
main.c:14:19: error: 'count' undeclared (first use in this function)
   14 |     printf("%d\n",count);
      |                   ^~~~~
main.c:14:19: note: each undeclared identifier is reported only once for each function it appears in
Language: C

/* ex4_1
  terakura */

#include <stdio.h>
#include <math.h>

int main(void){
    int trees, distance;
    scanf("%d %d", &trees, &distance);
    int range = distance * 2 + 1;       //1人で監視できる範囲
    int min = (int)ceil(double)trees / range);     //最小の人数
    printf("%d\n", min);
    return 0;
}


Compiler output:
main.c: In function 'main':
main.c:11:25: error: expected expression before 'double'
   11 |     int min = (int)ceil(double)trees / range);     //最小の人数
      |                         ^~~~~~
main.c:11:32: error: expected ',' or ';' before 'trees'
   11 |     int min = (int)ceil(double)trees / range);     //最小の人数
      |                                ^~~~~
Language: C

/* ex4_1
   UMAboogie */

#include<stdio.h>
#include<math.h>

int main(void){
  double apple range;
  scanf("%lf  %lf",&apple,&range); //りんごの個数と監視の幅を入力
  int watchmen = ceil(apple / (range*2 + 1)); //1人の監視員は監視の幅の2倍に１加えた数のりんごを監視できるので、りんごの数をそれで割り小数点以下、切り上げる
  printf("%d",watchmen); //監視員の人数を出力
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:8:16: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'range'
    8 |   double apple range;
      |                ^~~~~
main.c:8:16: error: 'range' undeclared (first use in this function)
main.c:8:16: note: each undeclared identifier is reported only once for each function it appears in
main.c:9:21: error: 'apple' undeclared (first use in this function)
    9 |   scanf("%lf  %lf",&apple,&range); //りんごの個数と監視の幅を入力
      |                     ^~~~~
Language: Java


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

		int N = Integer.parseInt(sc.next());
		int D = Integer.parseInt(sc.next());

		int a = N / (2*D + 1);
		int b = N % (2*D + 1);
		if(b == 0) {
			System.out.println(a);
		} else {
			System.out.println(a+1);
		}
	}

}


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

#include<bits/stdc++.h>
using namespace std;
int main(){
    int n,d;
    cin >> n >> d;
    d = d*2 + 1;
    int ans;
    if(n%d == 0){
        ans = n/d;
    }
    else{
        ans = n/d + 1;
    }

    cout << ans << endl;
    
    return 0;
}

  
}

Compiler output:
a.cc:21:1: error: expected declaration before '}' token
   21 | }
      | ^
Language: C++

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

int main(){
  float n,d;
  cin >> n >> d;
  float a=2d+1;
  cout << ceil(n/a);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:11: error: unable to find numeric literal operator 'operator""d'
    8 |   float a=2d+1;
      |           ^~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main() {
  int n,d;
  cin >> n >> d;
  int ans=0;
  int res=n;
  for(int i=0;i<n;++i) {
    if(res<0) break;
    res-=2d+1;
    ans++;
  }
  cout << ans << endl;
  return 0;
}
  

Compiler output:
a.cc: In function 'int main()':
a.cc:10:10: error: unable to find numeric literal operator 'operator""d'
   10 |     res-=2d+1;
      |          ^~
Language: C++

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

int main(){
  int n,d;
  cin>>n>>d;
  if(n%2d==0){
    cout<<n/2d<<endl;
  }else{
    cout<<n/2d+1<<endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:8: error: unable to find numeric literal operator 'operator""d'
    7 |   if(n%2d==0){
      |        ^~
a.cc:8:13: error: unable to find numeric literal operator 'operator""d'
    8 |     cout<<n/2d<<endl;
      |             ^~
a.cc:10:13: error: unable to find numeric literal operator 'operator""d'
   10 |     cout<<n/2d+1<<endl;
      |             ^~
Language: C++

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

int main(){
  int n,d;
  cin>>n>>d;
  cout<<(n+(2*d:+1)-1)/(2*d+1)<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:16: error: expected ')' before ':' token
    7 |   cout<<(n+(2*d:+1)-1)/(2*d+1)<<endl;
      |            ~   ^
      |                )
a.cc:7:37: error: expected ')' before ';' token
    7 |   cout<<(n+(2*d:+1)-1)/(2*d+1)<<endl;
      |         ~                           ^
      |                                     )
Language: C++

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

int main(){
  int n,d;
  cin>>n>>d;
  if(n%(2d+1)==0){
    cout<<n/(2d+1)<<endl;
  }
  else{
    cout<<(n/(2d+1))+1<<endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: unable to find numeric literal operator 'operator""d'
    7 |   if(n%(2d+1)==0){
      |         ^~
a.cc:8:14: error: unable to find numeric literal operator 'operator""d'
    8 |     cout<<n/(2d+1)<<endl;
      |              ^~
a.cc:11:15: error: unable to find numeric literal operator 'operator""d'
   11 |     cout<<(n/(2d+1))+1<<endl;
      |               ^~
Language: C++

#include <algorithm>
#include <cmath>
#include <deque>
#include <iostream>
#include <map>
#include <set>
#include <tuple>
#include <vector>
using namespace std;
typedef long long ll;

int main() {
  int N, D;
  cin >> N >> D;
  int ans;
  int ans = (N + D * 2) / (D * 2 + 1);
  cout << ans << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:7: error: redeclaration of 'int ans'
   16 |   int ans = (N + D * 2) / (D * 2 + 1);
      |       ^~~
a.cc:15:7: note: 'int ans' previously declared here
   15 |   int ans;
      |       ^~~
Language: C++

#include "bits/stdc++.h"
#define FOR(i, a, b) for (int i = a; i < b; i++)
#define mFOR(i, a, b) for (int i = a; i > b; i--)
#define MP make_pair
#define PB push_back
#define ALL(v) v.begin(), v.end()
#define N 100007
#define INF 1000000007
using namespace std;

typedef long long ll;

ll gcd(ll a, ll b) { return b == 0 ? a : gcd(b, a % b); }
ll fceil(ll a, ll b) { return (a % b == 0 ? a / b : a / b + 1); }
int main()
{
   int n, d;
   cin >> n >> d;
   cout << (n+2*D)/(2*D+1) << endl;
   return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:17: error: 'D' was not declared in this scope
   19 |    cout << (n+2*D)/(2*D+1) << endl;
      |                 ^
Language: C

clude<stdio.h>
int main(void){
  int all,l,cnt=0;
  scanf("%d %d",&all,&l);
  while(all>0){
    all-=(l*2+1);
    cnt++;
  }
  printf("%d",cnt);
  return 0;
}

Compiler output:
main.c:1:6: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    1 | clude<stdio.h>
      |      ^
Language: C++

#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
using namespace std;

int main() {
  long long n,m,sum=0, mod=2019;
  cin>>n>>m;
  if(n%(2*m+1)=0)
  cout<<n/(2*m+1)<<endl;
  else
    cout<<n/(2*m+1)+1<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:7: error: lvalue required as left operand of assignment
    8 |   if(n%(2*m+1)=0)
      |      ~^~~~~~~~
Language: C

#include<stdio.h>
int main(void){
  int all,l,cnt++;
  scanf("%d %d",&all,&l);
  while(all>=0){
    all-=(l*2+1);
    cnt++;
  }
  printf("%d",cnt);
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:3:16: error: expected '=', ',', ';', 'asm' or '__attribute__' before '++' token
    3 |   int all,l,cnt++;
      |                ^~
main.c:7:5: error: 'cnt' undeclared (first use in this function); did you mean 'int'?
    7 |     cnt++;
      |     ^~~
      |     int
main.c:7:5: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

import java.util.Scanner;

/**
 * Main
 */
public class Main {

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

        double N = sc.nextInt();
        double D = sc.nextInt();

        double watch = 1 + D*2;

        double answer = Math.ceil(N/watch);

        // System.out.println(N);
        // System.out.println(watch);
        System.out.println((int)answer);


    }
}

Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.util.Scanner;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:6:1: error: expected unqualified-id before 'public'
    6 | public class Main {
      | ^~~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int INF=0x3fffffff;
const ll MOD=1000000007;
const ll MODD=998244353;
#define rrep(i,n) for(ll i=(ll)(n)-1;i>=0;i--)
#define REP(i,m,n) for(ll i=(ll)(m);i<(ll)(n);i++)
#define rep(i,n) REP(i,0,n)
template<typename T> bool chmax(T &m, const T q) { if (m < q) {m = q; return true;} else return false; }
template<typename T> bool chmin(T &m, const T q) { if (m > q) {m = q; return true;} else return false; }
  
int main()
{
  ll n, d, ans=1;
  cin >> n >> d;
  while(ans*(2d+1) < n)
  {
    ++ans;
  }
  cout << ans << "\n";
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:14: error: unable to find numeric literal operator 'operator""d'
   17 |   while(ans*(2d+1) < n)
      |              ^~
Language: C

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
#include <limits.h>

#define max 10

//qsort(str, n, sizeof(int), up_comp);
int up_comp(const void *a, const void *b){return *(int*)a - *(int*)b;}
int down_comp(const void *a, const void *b){return *(int*)b - *(int*)a;}

int main()
{
    int n, d;
    
    scanf("%d %d", &n, &d);
    
    printf("%d", (2＊d+n)/(2*d+1));
     
    return 0;
}





Compiler output:
main.c: In function 'main':
main.c:19:19: error: invalid suffix "＊d" on integer constant
   19 |     printf("%d", (2＊d+n)/(2*d+1));
      |                   ^~~~
Language: C++

#include<iostream>
using namespace std;
int main(){
  int n,d,ans=1;
  cin>>n>>d;
  while(1){
    if(n<ans(2*d+1)) ans++;
    else break;
  }
  cout<<ans<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:13: error: 'ans' cannot be used as a function
    7 |     if(n<ans(2*d+1)) ans++;
      |          ~~~^~~~~~~
Language: C++

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

int main(){
  int n, d;
  cin >> n >> d;
  
  if(N % (2 * d + 1) == 0){
    cout << n / (2 * d + 1) << endl;
  }
  else{
    cout << n / (2 * d + 1) + 1 << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:6: error: 'N' was not declared in this scope
    8 |   if(N % (2 * d + 1) == 0){
      |      ^
Language: C++

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

int main(){
  int n, d;
  cin >> n >> d;
  
  if(N % (2 * d + 1) == 0){
    cout << N / (2 * d + 1) << endl;
  }
  else{
    cout << N / (2 * d + 1) + 1 << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:6: error: 'N' was not declared in this scope
    8 |   if(N % (2 * d + 1) == 0){
      |      ^
Language: C++

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

int main(){
    int n,d;
    cin >> n >> d;
    int x = n / (2d+1);
    if (n % (2d+1) != 0){
        x++;
    }
    cout << x << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:18: error: unable to find numeric literal operator 'operator""d'
    7 |     int x = n / (2d+1);
      |                  ^~
a.cc:8:14: error: unable to find numeric literal operator 'operator""d'
    8 |     if (n % (2d+1) != 0){
      |              ^~
Language: Java

import java.util.Scanner;
class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int K = sc.nextInt();
    int ans = ((N+(2*K+1)-1)/K;
    System.out.print(ans);
  }
}


Compiler output:
Main.java:7: error: ')' expected
    int ans = ((N+(2*K+1)-1)/K;
                              ^
1 error
Language: C++

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

int main() {
    int n, d;
    cin >> n >> d;

    int div = 2 * d + 1
    cout << (n + div - 1 ) / div << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:5: error: expected ',' or ';' before 'cout'
    9 |     cout << (n + div - 1 ) / div << endl;
      |     ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)

int main(){
  cin.tie(0);
  ios::sync_with_stdio(false);
  int,n,d; cin>>n>>d;
  ans=n/(2*d+1);
  if(ans*(2*d+1)==n){
    cout<<ans<<endl;
  }else cout<<ans+1<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:6: error: expected unqualified-id before ',' token
    8 |   int,n,d; cin>>n>>d;
      |      ^
a.cc:9:3: error: 'ans' was not declared in this scope; did you mean 'abs'?
    9 |   ans=n/(2*d+1);
      |   ^~~
      |   abs