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

#include <iostream>
#include <vector>
#include <algorithm>	// std::max, std::min
using namespace std;
#define repr(i,a,b) for(int i=a;i<b;i++)
#define rep(i,n) for(int i=0;i<n;i++)
#define reprrev(i,a,b) for(int i=b-1;i>=a;i--)
#define reprev(i,n) reprrev(i,0,n)
 
int main(void) {
	int A, B;
	cin >> A >> B;
	vector<int> a(A);
	rep(i, A) {
		cin >> a[i];
	}
  	rep(i, A){
      b[i] -= A - a[i]
    }
	vector<vector<int>> dp(A + 1, vector<int>(B + 1));
	dp[A][B] = 0;

	reprev(i, A + 1) {
		reprev(j, B + 1) {
			if (i == A && j == B) continue;
 
			if ((i + j) % 2 == 0) {
				if (i == A) {
					dp[i][j] = b[j] + dp[i][j + 1];
				}
				else if (j == B) {
					dp[i][j] = a[i] + dp[i + 1][j];
				}
				else {
				
					dp[i][j] = max(a[i] + dp[i + 1][j], b[j] + dp[i][j + 1]);
				}
			}
			else {
				if (i == A) {
					dp[i][j] = dp[i][j + 1];
				}
				else if (j == B) {
					dp[i][j] = dp[i + 1][j];
				}
				else {
					dp[i][j] = min(dp[i + 1][j], dp[i][j + 1]);
				}
			}
		}
	}
	cout << dp[0][0] << endl;
 
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:7: error: 'b' was not declared in this scope
   18 |       b[i] -= A - a[i]
      |       ^
a.cc:29:52: error: 'b' was not declared in this scope
   29 |                                         dp[i][j] = b[j] + dp[i][j + 1];
      |                                                    ^
a.cc:36:77: error: 'b' was not declared in this scope
   36 |                                         dp[i][j] = max(a[i] + dp[i + 1][j], b[j] + dp[i][j + 1]);
      |                                                                             ^
Language: C++

include<iostream>
using namespace std;


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

  int X[N+1];
  X[0]=0;
  for(int i=1;i<=N;i++){
    cin >> X[i];
  }

  int a[N+1][N+1];
  int b[N+1][N+1];

  for(int i=0;i<=N;i++){
    a[i][i]=0;
    b[i][i]=0;
  }
  b[0][0]=-L-1;
  
  for(int i=1;i<=N;i++){
    for (int j=i-1;j>=0;j--){
      
      a[j][i]=max(a[j+1][i]+X[j+1]-X[j], b[j+1][i]+X[j]-X[i]+L);
      if(j==0){
        b[j][i]=-L-1;
      }
      else{
        b[j][i]=max(a[j][i-1]+X[j]-X[i]+L,b[j][i-1]+X[i]-X[i-1]);
      }
    }
  }

  cout << a[0][N];
  return 0;
}

Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include<iostream>
      | ^~~~~~~
a.cc: In function 'int main()':
a.cc:7:3: error: 'cin' was not declared in this scope
    7 |   cin >> L;
      |   ^~~
a.cc:28:15: error: 'max' was not declared in this scope
   28 |       a[j][i]=max(a[j+1][i]+X[j+1]-X[j], b[j+1][i]+X[j]-X[i]+L);
      |               ^~~
a.cc:38:3: error: 'cout' was not declared in this scope
   38 |   cout << a[0][N];
      |   ^~~~
Language: C++

#include <cstdio>
#include <cstring>
#include <cstdlib>
#include <algorithm>
#include <vector>

using namespace std;

long long l, n;
long long x[200010];
long long L[20100][20100];
long long R[20100][20100];


long long p;
long long d;

long long doSearchL(int lPos, int rPos);
long long doSearchR(int lPos, int rPos);

long long doSearchL(int lPos, int rPos)
{
	if (lPos == rPos)
		return 0;
		
	if (L[lPos][rPos] > 0)
		return L[lPos][rPos];
		
	long long leftDist = doSearchL(lPos + 1, rPos) + x[lPos + 1] - x[lPos];
	long long rightDist = doSearchR(lPos + 1, rPos) + x[lPos] + l - x[rPos];
	
	if (leftDist > rightDist)
		L[lPos][rPos] = leftDist;
	else
		L[lPos][rPos] = rightDist;
		
	return L[lPos][rPos];
}

long long doSearchR(int lPos, int rPos)
{
	if (lPos == rPos)
		return 0;
		
	if (R[lPos][rPos] > 0)
		return R[lPos][rPos];
		
	long long leftDist = doSearchL(lPos, rPos - 1) + x[lPos] + l - x[rPos];
	long long rightDist = doSearchR(lPos, rPos - 1) + x[rPos] - x[rPos - 1];
	
	if (leftDist > rightDist)
		R[lPos][rPos] = leftDist;
	else
		R[lPos][rPos] = rightDist;
		
	return R[lPos][rPos];
}

int main()
{
	scanf("%lld%lld", &l, &n);
	for (int i = 1 ; i <= n ; i++)
		scanf("%lld", &(x[i]));
		
	x[0] = 0;
	p = 0;
	//	L[0][n] = 0;
	
	long long ans = doSearchL(0, n);
	
	printf("%lld\n", ans);

	return 0;
}


Compiler output:
/tmp/ccphDtIg.o: in function `doSearchR(int, int)':
a.cc:(.text+0x1f7): relocation truncated to fit: R_X86_64_PC32 against symbol `R' defined in .bss section in /tmp/ccphDtIg.o
a.cc:(.text+0x224): relocation truncated to fit: R_X86_64_PC32 against symbol `R' defined in .bss section in /tmp/ccphDtIg.o
a.cc:(.text+0x30a): relocation truncated to fit: R_X86_64_PC32 against symbol `R' defined in .bss section in /tmp/ccphDtIg.o
a.cc:(.text+0x338): relocation truncated to fit: R_X86_64_PC32 against symbol `R' defined in .bss section in /tmp/ccphDtIg.o
a.cc:(.text+0x364): relocation truncated to fit: R_X86_64_PC32 against symbol `R' defined in .bss section in /tmp/ccphDtIg.o
/tmp/ccphDtIg.o: in function `main':
a.cc:(.text+0x3f9): relocation truncated to fit: R_X86_64_PC32 against symbol `p' defined in .bss section in /tmp/ccphDtIg.o
collect2: error: ld returned 1 exit status
Language: C++

#include <iostream>
#include <fstream>
#include <vector>
#include <algorithm>
#include <queue>
#include <map>
#include <unordered_map>
#include <random>
#include <cstdio>
#include <cstring>
#include <cmath>

using namespace std;
using ll = long long;

ll L, N;
vector<ll> X;

void input() {
    cin >> L >> N;
    X.resize(N);
    for (auto& v : X)
        cin >> v;
//    L = 10, N = 6;
//    X = vector<ll>{1, 2, 3, 6, 7, 9};
}

ll solve() {
    function<ll(ll, ll, ll, ll)> traverse = [&](ll left, ll right, ll pos, ll length) {
        if (left > right) {
            cerr << length << endl;
            return length;
        }
        ll len_l = X[left] > pos ? X[left] - pos : L - pos + X[left];
        ll len_r = pos > X[right] ? pos - X[right] : L - X[right] + pos;
        if (len_l > len_r) {
            return traverse(left + 1, right, X[left], length + len_l);
        } else if (len_l < len_r) {
            return traverse(left, right - 1, X[right], length + len_r);
        } else {
            return max(traverse(left + 1, right, X[left], length + len_l),
                       traverse(left, right - 1, X[right], length + len_r));
        }
    };
    return traverse(0, N - 1, 0, 0);
}


int main() {
    input();
    cout << solve() << endl;;
    
    return 0;
}



Compiler output:
a.cc: In function 'll solve()':
a.cc:29:5: error: 'function' was not declared in this scope
   29 |     function<ll(ll, ll, ll, ll)> traverse = [&](ll left, ll right, ll pos, ll length) {
      |     ^~~~~~~~
a.cc:12:1: note: 'std::function' is defined in header '<functional>'; this is probably fixable by adding '#include <functional>'
   11 | #include <cmath>
  +++ |+#include <functional>
   12 | 
a.cc:29:31: error: expression list treated as compound expression in functional cast [-fpermissive]
   29 |     function<ll(ll, ll, ll, ll)> traverse = [&](ll left, ll right, ll pos, ll length) {
      |                               ^
a.cc:29:16: error: expected primary-expression before '(' token
   29 |     function<ll(ll, ll, ll, ll)> traverse = [&](ll left, ll right, ll pos, ll length) {
      |                ^
a.cc:29:19: error: expected primary-expression before ',' token
   29 |     function<ll(ll, ll, ll, ll)> traverse = [&](ll left, ll right, ll pos, ll length) {
      |                   ^
a.cc:29:23: error: expected primary-expression before ',' token
   29 |     function<ll(ll, ll, ll, ll)> traverse = [&](ll left, ll right, ll pos, ll length) {
      |                       ^
a.cc:29:27: error: expected primary-expression before ',' token
   29 |     function<ll(ll, ll, ll, ll)> traverse = [&](ll left, ll right, ll pos, ll length) {
      |                           ^
a.cc:29:31: error: expected primary-expression before ')' token
   29 |     function<ll(ll, ll, ll, ll)> traverse = [&](ll left, ll right, ll pos, ll length) {
      |                               ^
a.cc:29:34: error: 'traverse' was not declared in this scope
   29 |     function<ll(ll, ll, ll, ll)> traverse = [&](ll left, ll right, ll pos, ll length) {
      |                                  ^~~~~~~~
Language: C++

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

int main(void){
	ios::sync_with_stdio(false);
	int N, i, j,k, max,check;
	long L;
	int X[N];
	for (i = 0; i < N; i++) {
		cin >> X[i];
	}
	i =1;
	j = N - 1;
	max = 0;
	check = 0;
	if (X[i] > L - X[j]) {
	max = X[i];
	i = +1;
	}
	if (X[i] < L - X[j]) {
	max = X[j];
	j -= 1;
	}
	else {
		max += X[i];
		for (k = i+1; k < j; k++) {
			if (X[k] - X[k - 1] > X[N - k+1] - X[N - k ]) {
				i += 1;
				check = 1;
				break;
			}
			if (X[k] - X[k - 1] > X[N - k+1] - X[N - k]) {
				j -= 1;
				check = -1;
				break;
			}
		}
	}


	while(1){
		if (check == 1 ) {
			if (X[i + 1] - X[i] > X[i] + L - X[j]) {
				max += X[i + 1] - X[i];
				i = +1;
				check = 1;
			}
			if (X[i + 1] - X[i] < X[i] + L - X[j]) {
				max += X[i] + L - X[j];
				j -= 1;
				check = -1;
			}
			else {
				max += X[i + 1] - X[i];
				for (k =  1; k < j; k++) {
					if (X[k + i + 1] - X[k + i] > X[N - k - j + 1] - X[N - k - j]) {
						i += 1;
						check = 1;
						break;
					}
					if (X[k + i + 1] - X[k + i] < X[N - k - j + 1] - X[N - k - j]) {
						j -= 1;
						check = -1;
						break;
					}
				}
			}
		}
		if (check == -1) {
			if (X[i]+L - X[j] > X[j]-X[j-1]) {
				max += X[i] + L - X[j];
				i = +1;
				check = 1;
			}
			if (X[i] + L - X[j] < X[j] - X[j - 1]) {
				max += X[j] - X[j - 1]
				j -= 1;
				check = -1;
			}
			else {
				max += X[i] + L - X[j];
				for (k = 1; k < j; k++) {
					if (X[k + i] - X[k] > X[N - k - j] - X[N - k - j-1]) {
						i += 1;
						check = 1;
						break;
					}
					if (X[k + i] - X[k] < X[N - k - j] - X[N - k - j - 1]) {
						j -= 1;
						check = -1;
						break;
					}
				}
			}
		}

		if (i == j) break;
	}
	cout << max;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:80:55: error: expected ';' before 'j'
   80 |                                 max += X[j] - X[j - 1]
      |                                                       ^
      |                                                       ;
   81 |                                 j -= 1;
      |                                 ~
Language: C++

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

int main(void){
	ios::sync_with_stdio(false);
	int N, i, j,k, max,check;
	long L;
	int X[N];
	for (i = 0; i < N; i++) {
		cin >> X[i];
	}
	i =1;
	j = N - 1;
	max = 0;
	check = 0;
	if (X[i] > L - X[j]) {
	max = X[i];
	i = +1;
	}
	if (X[i] < L - X[j]) {
	max = X[j];
	j -= 1;
	}
	else {
		max += X[i];
		for (k = i+1; k < j; k++) {
			if (X[k] - X[k - 1] > X[N - k+1] - X[N - k ]) {
				i += 1;
				check = 1;
				break;
			}
			if (X[k] - X[k - 1] > X[N - k+1] - X[N - k]) {
				j -= 1;
				check = -1;
				break;
			}
		}
	}


	do while{
		if (check == 1 ) {
			if (X[i + 1] - X[i] > X[i] + L - X[j]) {
				max += X[i + 1] - X[i];
				i = +1;
				check = 1;
			}
			if (X[i + 1] - X[i] < X[i] + L - X[j]) {
				max += X[i] + L - X[j];
				j -= 1;
				check = -1;
			}
			else {
				max += X[i + 1] - X[i];
				for (k =  1; k < j; k++) {
					if (X[k + i + 1] - X[k + i] > X[N - k - j + 1] - X[N - k - j]) {
						i += 1;
						check = 1;
						break;
					}
					if (X[k + i + 1] - X[k + i] < X[N - k - j + 1] - X[N - k - j]) {
						j -= 1;
						check = -1;
						break;
					}
				}
			}
		}
		if (check == -1) {
			if (X[i]+L - X[j] > X[j]-X[j-1]) {
				max += X[i] + L - X[j];
				i = +1;
				check = 1;
			}
			if (X[i] + L - X[j] < X[j] - X[j - 1]) {
				max += X[j] - X[j - 1]
				j -= 1;
				check = -1;
			}
			else {
				max += X[i] + L - X[j];
				for (k = 1; k < j; k++) {
					if (X[k + i] - X[k] > X[N - k - j] - X[N - k - j-1]) {
						i += 1;
						check = 1;
						break;
					}
					if (X[k + i] - X[k] < X[N - k - j] - X[N - k - j - 1]) {
						j -= 1;
						check = -1;
						break;
					}
				}
			}
		}

		if (i == j) break;
	}
	cout << max;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:45:17: error: expected '(' before '{' token
   45 |         do while{
      |                 ^
      |                 (
a.cc:45:17: error: expected primary-expression before '{' token
a.cc:45:17: error: expected ')' before '{' token
   45 |         do while{
      |                 ^
      |                 )
a.cc:80:55: error: expected ';' before 'j'
   80 |                                 max += X[j] - X[j - 1]
      |                                                       ^
      |                                                       ;
   81 |                                 j -= 1;
      |                                 ~                      
a.cc:103:9: error: expected 'while' before 'cout'
  103 |         cout << max;
      |         ^~~~
a.cc:103:9: error: expected '(' before 'cout'
  103 |         cout << max;
      |         ^~~~
      |         (
a.cc:103:20: error: expected ')' before ';' token
  103 |         cout << max;
      |         ~~~~       ^
      |                    )
Language: C++

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

int main(void){
	ios::sync_with_stdio(false);
	int N, i, j,k, max,check;
	long L;
	int X[N];
	for (i = 0; i < N; i++) {
		cin >> X[i];
	}
	i =1;
	j = N - 1;
	max = 0;
	check = 0;
	if (X[i] > L - X[j]) {
	max = X[i];
	i = +1;
	}
	if (X[i] < L - X[j]) {
	max = X[j];
	j -= 1;
	}
	else {
		max += X[i];
		for (k = i+1; k < j; k++) {
			if (X[k] - X[k - 1] > X[N - k+1] - X[N - k ]) {
				i += 1;
				check = 1;
				break;
			}
			if (X[k] - X[k - 1] > X[N - k+1] - X[N - k]) {
				j -= 1;
				check = -1;
				break;
			}
		}
	}


	do while{
		if (check == 1 ) {
			if (X[i + 1] - X[i] > X[i] + L - X[j]) {
				max += X[i + 1] - X[i];
				i = +1;
				check = 1;
			}
			if (X[i + 1] - X[i] < X[i] + L - X[j]) {
				max += X[i] + L - X[j];
				j -= 1;
				check = -1;
			}
			else {
				max += X[i + 1] - X[i];
				for (k =  1; k < j; k++) {
					if (X[k + i + 1] - X[k + i] > X[N - k - j + 1] - X[N - k - j]) {
						i += 1;
						check = 1;
						break;
					}
					if (X[k + i + 1] - X[k + i] < X[N - k - j + 1] - X[N - k - j]) {
						j -= 1;
						check = -1;
						break;
					}
				}
			}
		}
		if (check == -1) {
			if (X[i]+L - X[j] > X[j]-x[j-1]) {
				max += X[i] + L - X[j];
				i = +1;
				check = 1;
			}
			if (X[i] + L - X[j] < X[j] - x[j - 1]) {
				max += X[j] - x[j - 1]
				j -= 1;
				check = -1;
			}
			else {
				max += X[i] + L - X[j];
				for (k = 1; k < j; k++) {
					if (X[k + i] - X[k] > X[N - k - j] - X[N - k - j-1]) {
						i += 1;
						check = 1;
						break;
					}
					if (X[k + i] - X[k] < X[N - k - j] - X[N - k - j - 1]) {
						j -= 1;
						check = -1;
						break;
					}
				}
			}
		}

		if (i == j) break;
	}
	cout << max;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:45:17: error: expected '(' before '{' token
   45 |         do while{
      |                 ^
      |                 (
a.cc:45:17: error: expected primary-expression before '{' token
a.cc:45:17: error: expected ')' before '{' token
   45 |         do while{
      |                 ^
      |                 )
a.cc:74:50: error: 'x' was not declared in this scope
   74 |                         if (X[i]+L - X[j] > X[j]-x[j-1]) {
      |                                                  ^
a.cc:79:54: error: 'x' was not declared in this scope
   79 |                         if (X[i] + L - X[j] < X[j] - x[j - 1]) {
      |                                                      ^
a.cc:103:9: error: expected 'while' before 'cout'
  103 |         cout << max;
      |         ^~~~
a.cc:103:9: error: expected '(' before 'cout'
  103 |         cout << max;
      |         ^~~~
      |         (
a.cc:103:20: error: expected ')' before ';' token
  103 |         cout << max;
      |         ~~~~       ^
      |                    )
Language: Java

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


public class C {
	
	static class Scanner{
		BufferedReader br=null;
		StringTokenizer tk=null;
		public Scanner(){
			br=new BufferedReader(new InputStreamReader(System.in));
		}
		public String next() throws IOException{
			while(tk==null || !tk.hasMoreTokens()) {
				String cad = br.readLine();
				if (cad == null)
					return null;
				tk=new StringTokenizer(cad);
			}
			return tk.nextToken();
		}
		public int nextInt() throws NumberFormatException, IOException{
			return Integer.valueOf(next());
		}
		public long nextLong() throws NumberFormatException, IOException{
			return Long.valueOf(next());
		}
		public double nextDouble() throws NumberFormatException, IOException{
			return Double.valueOf(next());
		}
	}
	
	static int L;
	static int N;
	static int[] X;
	static Long[][][] dp;
	
	
	static long dp(int left, int right, int last_left) {
		if (left + 1 == right)
			return 0;
		if (dp[left][right][last_left] != null)
			return dp[left][right][last_left];
		long first, second;
		if (last_left == 1) {
			first = X[left + 1] - X[left] + dp(left + 1, right, 1);
			second = X[left] + (L - X[right - 1]) + dp(left, right - 1, 0);		
		}
		else {
			first = X[right] - X[right - 1] + dp(left, right - 1, 0);
			second = (L - X[right]) + X[left + 1] + dp(left + 1, right, 1);
		}
		long ans = Math.max(first, second);
		dp[left][right][last_left] = ans;
		return ans;
	}
	
	public static void main(String args[]) throws NumberFormatException, IOException {
		Scanner sc = new Scanner();
		L = sc.nextInt();
		N = sc.nextInt();
		X = new int[N + 2];
		for(int i = 0; i < N; i++)
			X[i + 1] = sc.nextInt();
		X[0] = 0;
		X[N + 1] = L;
		dp = new Long[N + 2][N + 2][2];
		System.out.println(dp(0, N + 1, 1));
	}

}


Compiler output:
Main.java:7: error: class C is public, should be declared in a file named C.java
public class C {
       ^
1 error
Language: C++

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

class Timer {
	chrono::high_resolution_clock::time_point start, end;
	double limit;

public:
	Timer() {
		start = chrono::high_resolution_clock::now();
	}
	Timer(double l) {
		start = chrono::high_resolution_clock::now();
		limit = l;
	}

	double getTime() {
		end = chrono::high_resolution_clock::now();
		return chrono::duration<double>(end - start).count();
	}

	bool Over() {
		if (getTime() > limit) {
			return true;
		}
		return false;
	}

	void setLimit(double l) {
		limit = l;
	}
	void setStart() { start = chrono::high_resolution_clock::now(); }
	double getLimit() { return limit; }
};

typedef long long ll;



int N;
ll L;
vector<ll>X;

ll solve(int l, int r, bool which)
{
	if (l == 0 && r == N - 1)
	{
		if(which)return X[l];
		else return L-X[r];
	}

	if (which)
	{
		int index = (r + 1) % N;
		if (X[index] < X[l])return X[l];
		return solve(l, r + 1, !which) + L - (X[index] - X[l]);
	}
	else
	{
		int index = (l - 1 + N) % N;
		if (X[index] > X[r])return L - X[r];
		return solve(l - 1, r, !which) + L - (X[r] - X[index]);
	}
}

int main() {
	cin>>L>>N;
	X.resize(N);
	for (int i = 0; i < N; i++)
	{
		cin >> X[i];
	}

	Timer tmr(1.8);

	ll ans = 0;
	int pos = N/2;
	while(!tmr.Over())
	{
		pos += (t%2?1:-1)*t;
		if(pos <0 || pos >=N)break;

		ans = max(ans, solve(pos, pos, true));
		ans = max(ans, solve(pos, pos, false));
	}
	cout << ans << endl;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:84:25: error: 't' was not declared in this scope; did you mean 'tm'?
   84 |                 pos += (t%2?1:-1)*t;
      |                         ^
      |                         tm
Language: C++

#include <bits/stdc++.h>
#define int long long
using namespace std;
const int N=2010;
int l,n,kq;
int a[N];
int f[N][N][2];
int main()
{
    //freopen("b.inp","r",stdin);
    cin>>l>>n;
    for(int i=1;i<=n;++i) cin>>a[i];
    memset(f,-1,sizeof(f));
    f[1][1][0]=a[1];
    f[1][n][1]=l-a[n];
    for(int t=1;t<n;++t) for(int i=0;i<=n;++i) for(int o=0;o<=1;++o) if(f[t][i][o]>-1)
    {
        if(!o)
        {
            int j=n-t+i;
            f[t+1][j][1]=max(f[t+1][j][1],f[t][i][0]+a[i]+l-a[j]);
            f[t+1][i+1][0]=max(f[t+1][i+1][0],f[t][i][0]+a[i+1]-a[i]);
        }
        else
        {
            int j=t-n+i;
            f[t+1][j][0]=max(f[t+1][j][0],f[t][i][1]+a[j]+l-a[i]);
            f[t+1][i-1][1]=max(f[t+1][i-1][1],f[t][i][1]+a[i]-a[i-1]);
        }
    }
    for(int i=0;i<=n;++i) kq=max({kq,f[n][i][0],f[n][i][1]});
    cout<<kq;
}


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

#include <iostream>
#include <vector>

using namespace std;

int main()
{
	int l, n;
	vector<int> v;
	cin >> l >> n;
	for (int i = 0; i < n; i++) {
		int tmp;
		cin >> tmp;
		v.push_back(tmp);
	}

	long long sum = 0;
	int pos = 0;

	sort(v.begin(), v.end());

	for (int i = 0; i < n; i++) {
		if (v[i] < l / 2) {
			sum += (v[i] - pos);
			pos = v[i];
		} else {
			sum += l - (v[i] - pos);
			pos = v[i];
		}
	}

	cout << sum << endl;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:9: error: 'sort' was not declared in this scope; did you mean 'short'?
   20 |         sort(v.begin(), v.end());
      |         ^~~~
      |         short
Language: C++

#include <vector>

using namespace std;

int main()
{
	int l, n;
	vector<int> v;
	cin >> l >> n;
	for (int i = 0; i < n; i++) {
		int tmp;
		cin >> tmp;
		v.push_back(tmp);
	}

	long long sum = 0;
	int pos = 0;

	sort(v.begin(), v.end());

	for (int i = 0; i < n; i++) {
		if (v[i] < l / 2) {
			sum += (v[i] - pos);
			pos = v[i];
		} else {
			sum += l - (v[i] - pos);
			pos = v[i];
		}
	}

	cout << sum << endl;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:9: error: 'cin' was not declared in this scope
    9 |         cin >> l >> n;
      |         ^~~
a.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    1 | #include <vector>
  +++ |+#include <iostream>
    2 | 
a.cc:19:9: error: 'sort' was not declared in this scope; did you mean 'short'?
   19 |         sort(v.begin(), v.end());
      |         ^~~~
      |         short
a.cc:31:9: error: 'cout' was not declared in this scope
   31 |         cout << sum << endl;
      |         ^~~~
a.cc:31:9: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:31:24: error: 'endl' was not declared in this scope
   31 |         cout << sum << endl;
      |                        ^~~~
a.cc:2:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
    1 | #include <vector>
  +++ |+#include <ostream>
    2 |
Language: C++

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

int main(void){

int L,N;
cin >> L >> N;
  
int* x = new int[N];
for (int i==0;i<N;i++){
  cin >> x[i];
}

int l = 0;
int r = N-1;
int xn = 0;
long long len =0;
for (int i=0;i<N;i++){
  int xl;
  if (x[l]>xn){
    xl = x[l]-xn;
  }else{
    xl = x[l]+(L-xn);
  }
  int xr;
  if (x[r]>xn){
    xr = x[r]+xn;
  }else{
    xr = xn-x[r];
  }
  
  if (xl>xr){
    xn = x[l];
    len += xl;
    l++;
  }else{
    xn = x[r];
    len += xr;
    r--;
  }
}
 
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:11: error: expected ';' before '==' token
   11 | for (int i==0;i<N;i++){
      |           ^~
      |           ;
a.cc:11:11: error: expected primary-expression before '==' token
   11 | for (int i==0;i<N;i++){
      |           ^~
a.cc:11:18: error: expected ')' before ';' token
   11 | for (int i==0;i<N;i++){
      |     ~            ^
      |                  )
a.cc:11:19: error: 'i' was not declared in this scope
   11 | for (int i==0;i<N;i++){
      |                   ^
Language: C++

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

#define int long long
#define fi first
#define se second
#define otp(n) cout << n;
#define ct(n) cout << n << endl;
#define cts(n) cout << n << " ";
#define cte cout << endl;
#define ctv(v) rep(i,(v).size()) ct(v[i])
#define rep(i,n) for(int i=0;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
#define repo(i,o,n) for(int i=o;i<n;i++)
#define repm(i,n) for(int i=n-1;i>=0;i--)
#define repv(i,v) for(int i=0;i<(v).size();i++)
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define sperase(v,n) (v).erase(remove(all(v), n), (v).end());
#define vdelete(v) (v).erase(unique(all(v)), (v).end());
#define pb(n) push_back(n);

int l,n,x,memo[200000][200000];
vector<pair<int,int>> v;

main() {
    cin >> l >> n;
    
}


Compiler output:
a.cc:26:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   26 | main() {
      | ^~~~
/tmp/cclXCJ75.o: in function `__static_initialization_and_destruction_0()':
a.cc:(.text+0x40): relocation truncated to fit: R_X86_64_PC32 against symbol `v' defined in .bss section in /tmp/cclXCJ75.o
a.cc:(.text+0x59): relocation truncated to fit: R_X86_64_PC32 against symbol `v' defined in .bss section in /tmp/cclXCJ75.o
collect2: error: ld returned 1 exit status
Language: C++

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

int main(void){

int L,N;
cin >> L >> N;
  
int* x = new x[N];
for (int i==0;i<N;i++){
  cin >> x[i];
}

int l = 0;
int r = N-1;
int xn = 0;
long long len =0;
for (int i=0;i<N;i++){
  int xl;
  if (x[l]>xn){
    xl = x[l]-xn;
  }else{
    xl = x[l]+(L-xn);
  }
  int xr;
  if (x[r]>xn){
    xr = x[r]+xn;
  }else{
    xr = xn-x[r];
  }
  
  if (xl>xr){
    xn = x[l];
    len += xl;
    l++;
  }else{
    xn = x[r];
    len += xr;
    r--;
  }
}
 
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:14: error: 'x' does not name a type
   10 | int* x = new x[N];
      |              ^
a.cc:11:11: error: expected ';' before '==' token
   11 | for (int i==0;i<N;i++){
      |           ^~
      |           ;
a.cc:11:11: error: expected primary-expression before '==' token
   11 | for (int i==0;i<N;i++){
      |           ^~
a.cc:11:18: error: expected ')' before ';' token
   11 | for (int i==0;i<N;i++){
      |     ~            ^
      |                  )
a.cc:11:19: error: 'i' was not declared in this scope
   11 | for (int i==0;i<N;i++){
      |                   ^
Language: C++

#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#define ll long long
using namespace std;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    ll l,n,x,prev=0,ans=0;
    cin>>l>>n;
    ll arr[n];
    for(ll i=0;i<n;i++){
        cin>>arr[i];
        ans+=max(abs(arr[i]-prev),prev-1+l-arr[i]+1)
        prev=arr[i];
    }
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:20:53: error: expected ';' before 'prev'
   20 |         ans+=max(abs(arr[i]-prev),prev-1+l-arr[i]+1)
      |                                                     ^
      |                                                     ;
   21 |         prev=arr[i];
      |         ~~~~
Language: C++

n, i, j, k = 500;
f(x) { return x > n ? x - k : x; }
main() {
	scanf("%d", &n);
	if (n <= k) {
		printf("%d", n);
		for (i = n + 1; puts(""), --i;)
			for (j = n; j--;) printf("%d ", i);
		return 0;
	}
	puts("500");
	for (i--; ++i < k; puts(""))
		for (j = 0; j < k; j++) printf("%d ", f((i + j) % k + 1 + j % 2 * k));
}

Compiler output:
a.cc:1:1: error: 'n' does not name a type
    1 | n, i, j, k = 500;
      | ^
a.cc:2:2: error: expected constructor, destructor, or type conversion before '(' token
    2 | f(x) { return x > n ? x - k : x; }
      |  ^
a.cc:3:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    3 | main() {
      | ^~~~
a.cc: In function 'int main()':
a.cc:4:22: error: 'n' was not declared in this scope
    4 |         scanf("%d", &n);
      |                      ^
a.cc:4:9: error: 'scanf' was not declared in this scope
    4 |         scanf("%d", &n);
      |         ^~~~~
a.cc:5:18: error: 'k' was not declared in this scope
    5 |         if (n <= k) {
      |                  ^
a.cc:6:17: error: 'printf' was not declared in this scope
    6 |                 printf("%d", n);
      |                 ^~~~~~
a.cc:1:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
  +++ |+#include <cstdio>
    1 | n, i, j, k = 500;
a.cc:7:22: error: 'i' was not declared in this scope
    7 |                 for (i = n + 1; puts(""), --i;)
      |                      ^
a.cc:7:33: error: 'puts' was not declared in this scope
    7 |                 for (i = n + 1; puts(""), --i;)
      |                                 ^~~~
a.cc:8:30: error: 'j' was not declared in this scope
    8 |                         for (j = n; j--;) printf("%d ", i);
      |                              ^
a.cc:11:9: error: 'puts' was not declared in this scope
   11 |         puts("500");
      |         ^~~~
a.cc:12:14: error: 'i' was not declared in this scope
   12 |         for (i--; ++i < k; puts(""))
      |              ^
a.cc:12:25: error: 'k' was not declared in this scope
   12 |         for (i--; ++i < k; puts(""))
      |                         ^
a.cc:13:22: error: 'j' was not declared in this scope
   13 |                 for (j = 0; j < k; j++) printf("%d ", f((i + j) % k + 1 + j % 2 * k));
      |                      ^
a.cc:13:55: error: 'f' was not declared in this scope
   13 |                 for (j = 0; j < k; j++) printf("%d ", f((i + j) % k + 1 + j % 2 * k));
      |                                                       ^
a.cc:13:41: error: 'printf' was not declared in this scope
   13 |                 for (j = 0; j < k; j++) printf("%d ", f((i + j) % k + 1 + j % 2 * k));
      |                                         ^~~~~~
a.cc:13:41: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
Language: C++

#include <bits/stdc++.h>
using namespace std;
int ans[505][505];
void check(int n,int k){
    vector<pair<int,int>>bl[1005];
    for(int i=1;i<=n;i++)
        for(int j=1;j<=n;j++)
            bl[ans[i][j]].emplace_back(i,j);
    for(int i=1;i<=k;i++){
        multiset<int>qwq;
        for(auto pos:bl[i]){
            int x,y;tie(x,y)=pos;
            multiset<int>cur;
            cur.insert(ans[x][y==1?n:y-1]);
            cur.insert(ans[x][y==n?1:y+1]);
            cur.insert(ans[x==1?n:x-1][y]);
            cur.insert(ans[x==n?1:x+1][y]);
            if(qwq.size()==0)qwq=cur;
            else if(qwq!=cur){
                cout<<"col:"<<i<<"\n";
                cout<<x<<" "<<y<<"\n";
                for(int i:qwq)cout<<i<<" ";cout<<"\n";
                for(int i:cur)cout<<i<<" ";cout<<"\n";
                exit(0);
            }
        }
    }
    puts("success");
}
int main(){
    int n,k;cin>>k;
    if(k<=500){
        n=k;
        for(int i=1;i<=n;i++)
            for(int j=1;j<=n;j++)
                ans[i][j]=i;
    }else{
        n=500;
        for(int i=1;i<=n;i++)
            for(int j=1;j<=n;j++)
                ans[i][j]=((i+j)%n)+1;
        for(int i=2;i<=n+n;i++){
            for(int x=1;x<=n;x++){
                static int chk[1005];
                int y=i-x;
                if(y<1||y>n)continue;
                int v=ans[x][y];
                if(v+n>k)continue;
                ans[x][y]+=n*chk[v];
                chk[v]^=1;
            }
        }
    }
    cout<<n<<"\n";
    for(int i=1;i<=n;i++)
        for(int j=1;j<=n;j++)
            cout<<<<ans[i][j]<<" \n"[j==n];
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:57:19: error: expected primary-expression before '<<' token
   57 |             cout<<<<ans[i][j]<<" \n"[j==n];
      |                   ^~
Language: C++

#include <bits/stdc++.h> 
int k, t, n;
int main() {
	std::ios::sync_with_stdio(0), std::cin.tie(0);
	std::cin >> k, t = k; while (t & 3) t += t & -t;
	n = t >> 1;
	for (int i = 0; i < n; ++i, std::cout << '\n')
		for (int j = 0; j < n; ++j) {
			int t = (i + j) % n + (i & 1 ? n : 0) + 1;
			if (t > k) t -= n;#include <bits/stdc++.h>

int k, t, n;
int main() {
	std::ios::sync_with_stdio(0), std::cin.tie(0);
	std::cin >> k, t = k; while (t & 3) t += t & -t;
	n = t >> 1, std::cout << n << '\n';
	for (int i = 0; i < n; ++i, std::cout << '\n')
		for (int j = 0; j < n; ++j) {
			int t = (i + j) % n + (i & 1 ? n : 0) + 1;
			if (t > k) t -= n;
			std::cout << t << ' ';
		}
	return 0;
}

			std::cout << std::setw(4) << t << ' ';
		}
	return 0;
}

Compiler output:
a.cc:10:43: error: stray '#' in program
   10 |                         if (t > k) t -= n;#include <bits/stdc++.h>
      |                                           ^
a.cc: In function 'int main()':
a.cc:10:44: error: 'include' was not declared in this scope
   10 |                         if (t > k) t -= n;#include <bits/stdc++.h>
      |                                            ^~~~~~~
a.cc:10:53: error: 'bits' was not declared in this scope
   10 |                         if (t > k) t -= n;#include <bits/stdc++.h>
      |                                                     ^~~~
a.cc:10:58: error: 'stdc' was not declared in this scope; did you mean 'std'?
   10 |                         if (t > k) t -= n;#include <bits/stdc++.h>
      |                                                          ^~~~
      |                                                          std
a.cc:12:1: error: expected primary-expression before 'int'
   12 | int k, t, n;
      | ^~~
a.cc:13:9: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
   13 | int main() {
      |         ^~
a.cc:13:9: note: remove parentheses to default-initialize a variable
   13 | int main() {
      |         ^~
      |         --
a.cc:13:9: note: or replace parentheses with braces to value-initialize a variable
a.cc:13:12: error: a function-definition is not allowed here before '{' token
   13 | int main() {
      |            ^
Language: C++

#include <bits/stdc++.h>

#define x first
#define y second
#define pb push_back
#define mp make_pair
#define inf (0x3f3f3f3f)

using namespace std;

typedef long long ll;
typedef pair<int, int> PII;

template<class T>inline T read(T &_) {
	T __ = getchar(), ___ = 1; _ = 0;
	for (; !isdigit(__); __ = getchar()) if (__ == '-') ___ = -1;
	for (; isdigit(__); __ = getchar()) _ = (_ << 3) + (_ << 1) + (__ ^ 48);
	return _ *= ___;
}

template<class T>inline bool chkmax(T &_, T __) { return _ < __ ? _ = __, 1 : 0; }
template<class T>inline bool chkmin(T &_, T __) { return _ > __ ? _ = __, 1 : 0; }

inline void proStatus() {
	ifstream t("/proc/self/status");
	cerr << string(istreambuf_iterator<char>(t), istreambuf_iterator<char>());
}

int main() {
	//freopen("c.in", "r", stdin);
	//freopen("c.out", "w", stdout);

	int k, res;

	/*if (k <= 500) {
		cout << k << endl;
		for (int i = 1; i <= k; ++ i)
			for (int j = 1; j <= k; ++ j)
				printf("%d%c", i, j == k ? '\n' : ' ' );
		return 0;
	}*/

	read(k);
	int n = ((k + 3) / 4) << 1;
	for (int i = 1; i <= n; ++ i)
		for (int j = 1; j <= n; ++ j) {
			res = (i + j) % n + (i & 1 ? 0 : n) + 1; 
			if (res > k) res -= n;
			printf("%d%c", res, j == n ? '\n' : ' ');
		}
	return 0;
	}


	/*int n = k / 2, m = k & 1;
	  cout << (n + m) << endl;
	  for (int i = 1; i <= n + m; ++ i)
	  for (int j = 1; j <= n; ++ j) 
	  a[i][j] = (i & 1) * n + j;
	  if (m) for (int j = 1; j <= n + m; ++ j) 
	  a[j][n + m] = k;

	  for (int i = 1; i <= n + m; ++ i)
	  for (int j = 1; j <= n + m; ++ j) 
	  printf("%d%c", a[i][j], j == n + m ? '\n' : ' ');*/

	return 0;
}


Compiler output:
a.cc:67:9: error: expected unqualified-id before 'return'
   67 |         return 0;
      |         ^~~~~~
a.cc:68:1: error: expected declaration before '}' token
   68 | }
      | ^
Language: C++

#include <algorithm>
#include <bitset>
#include <cctype>
#include <cmath>
#include <cstdio>
#include <cstring>
#include <deque>
#include <fstream>
#include <functional>
#include <iostream>
#include <limits>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <vector>
using namespace std;
using ll = long long;
#define fst first
#define snd second

/* clang-format off */
template <class T, size_t D> struct _vec { using type = vector<typename _vec<T, D - 1>::type>; };
template <class T> struct _vec<T, 0> { using type = T; };
template <class T, size_t D> using vec = typename _vec<T, D>::type;
template <class T> vector<T> make_v(size_t size, const T& init) { return vector<T>(size, init); }
template <class... Ts> auto make_v(size_t size, Ts... rest) { return vector<decltype(make_v(rest...))>(size, make_v(rest...)); }
template <class T> inline void chmin(T &a, const T& b) { if (b < a) a = b; }
template <class T> inline void chmax(T &a, const T& b) { if (b > a) a = b; }
/* clang-format on */

int main() {
#ifdef DEBUG
  ifstream cin("in.txt");
#endif
  int K;
  while (cin >> K) {
    int side = 0;
    for (int n = 1; n <= 500; n++) {
      int a = n * n;
      if (a < K) continue;
      int m = K % n;
      int s = (K / n + m);
      if (n % s == 0) {
        side = n;
        break;
      }
    }
    assert(1 <= side && side <= 500);
    cout << side << endl;
    int m = K % side;
    int s = (K / side + m);
    for (int i = 0; i < side; i++) {
      for (int j = 0; j < side; j++) {
        int val;
        if (i % s < K / side) {
          val = (i % s) * side + j;
        } else {
          val = (K - m) + (i % s - K / side);
        }
        cout << val + 1 << " ";
      }
      cout << endl;
    }
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:49:5: error: 'assert' was not declared in this scope
   49 |     assert(1 <= side && side <= 500);
      |     ^~~~~~
a.cc:16:1: note: 'assert' is defined in header '<cassert>'; this is probably fixable by adding '#include <cassert>'
   15 | #include <set>
  +++ |+#include <cassert>
   16 | #include <vector>
Language: C++

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

int K;
int ans[555][555];

void print(int n) {
    printf("%d\n", n);
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < n; j++) {
            printf("%d ", ans[i][j] + 1);
        }
        printf("\n");
    }
}

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

    if(K <= 500) {
        for(int i = 0; i < K; i++) {
            for(int j = 0; j < K; j++) {
                ans[i][j] = i;
            }
        }
        print();
        return 0;
    }

    int n = (K + 1) / 2;
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < n; j++) {
            if(i % 2) ans[i][j] = (i + j) % n;
            else ans[i][j] = n + (i + j) % n;
        }
    }
    if(K % 2) {
        for(int i = 0; i < n; i++) {
            for(int j = 0; j < n; j++) {
                if(ans[i][j] == K) {
                    ans[i][j] -= n;
                }
            }
        }
    }
    print(n);
}


Compiler output:
a.cc: In function 'int main()':
a.cc:26:14: error: too few arguments to function 'void print(int)'
   26 |         print();
      |         ~~~~~^~
a.cc:7:6: note: declared here
    7 | void print(int n) {
      |      ^~~~~
Language: C++

#include <cstdio>
#include <algorithm>
#include <cmath>
#include <cstring>
#include <cstdlib>
#include <queue>
#include <iostream>
#include <bitset>
using namespace std;
#define N 505
int a[N][N],K,n;
int main()
{
	scanf("%d",&K);
	if(K<=500)
	{
		printf("%d\n",K);
		for(int i=1;i<=K;i++,puts(""))
			for(int j=1;j<=K;j++)
				printf("%d ",i);
		return 0;
	}else if(!(K&3))
	{
		n=K>>1;
		printf("%d\n",n);
		for(int i=1;i<=n;i++,puts(""))
			for(int j=1;j<=n;j++)
				printf("%d ",(j&1)?(i):(i+n));
		return 0;
	}else
	{
		n=((k+3)>>2)<<1;
		printf("%d\n",n);
		for(int i=1;i<=n;i++,puts(""))
			for(int j=1;j<=n;j++)
				printf("%d ",((i+j)%n+((i&1)?0:n)));
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:32:21: error: 'k' was not declared in this scope
   32 |                 n=((k+3)>>2)<<1;
      |                     ^
Language: C++

#include <cstdio>
#include <algorithm>
#include <cmath>
#include <cstring>
#include <cstdlib>
#include <queue>
#include <iostream>
#include <bitset>
using namespace std;
#define N 505
int a[N][N],K,n;
int main()
{
	scanf("%d",&K);
	if(K<=500)
	{
		printf("%d\n",K);
		for(int i=1;i<=K;i++,puts(""))
			for(int j=1;j<=K;j++)
				printf("%d ",i);
		return 0;
	}else if(!(K&3))
	{
		n=K>>1;
		printf("%d\n",n);
		for(int i=1;i<=n;i++,puts(""))
			for(int j=1;j<=n;j++)
				printf("%d ",(j&1)?(i):(i+n));
		return 0;
	}else
	{
		int n=((k+3)>>2)<<1;
		printf("%d\n",n);
		for(int i=1;i<=n;i++,puts(""))
			for(int j=1;j<=n;j++)
				printf("%d ",((i+j)%n+((i&1)?0:n)));
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:32:25: error: 'k' was not declared in this scope
   32 |                 int n=((k+3)>>2)<<1;
      |                         ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
	int k;cin>>k;if(k==1){cout<<"1\n1\n";return 0;}
	int n=(k+3)/4*2;
	cout<<n<<endl;
	for(int i=0;i<n;i++)for(int j=0;j<n;j++)if(i&1){cout<<(n+(i+j)%n+1>?n+(i+j)%n+1:n+(i+j)%n+1-k)<<(j==n-1?'\n':' ');}else{cout<<1+(i+j)%n<<(j==n-1?'\n':' ');}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:76: error: expected primary-expression before '?' token
    7 |         for(int i=0;i<n;i++)for(int j=0;j<n;j++)if(i&1){cout<<(n+(i+j)%n+1>?n+(i+j)%n+1:n+(i+j)%n+1-k)<<(j==n-1?'\n':' ');}else{cout<<1+(i+j)%n<<(j==n-1?'\n':' ');}
      |                                                                            ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int k, n, res;

int color(int r, int c) {
  int ret = 0;
  ret += n * (r & 1);
  ret += (c + r) % n;
  if(r & 1 && (c + r) 9% n >= n - res){
    ret -= n;
  }
  ret++;
  return ret;
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cin >> k;
  if (k == 1) {
    cout << "1\n1" << '\n';
    return 0;
  }

  n = (k + 3) / 4 * 2;
  res = n * 2 - k;
  cout << n << '\n';
  for (int r = 0; r < n; r++) {
    for (int c = 0; c < n; c++) {
      cout << color(r, c);
      if (c==n-1){
        cout << '\n';
      } else {
        cout << ' ';
      }
    }
  }
  return 0;
}

Compiler output:
a.cc: In function 'int color(int, int)':
a.cc:9:22: error: expected ')' before numeric constant
    9 |   if(r & 1 && (c + r) 9% n >= n - res){
      |     ~                ^~
      |                      )
Language: C++

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

int main(){
    int_fast64_t K;
    scanf("%lld", &K);
    if(K <= 500){
        printf("%lld", K);
        for(int i = 0; i < K; ++i){
            for(int j = 0; j < K; ++j){
                printf("%c%lld", j ? ' ' : '\n', i + 1);
            }
        }
    }else if(K & 1){
        assert(0 == 1)
        return 0;
    }else{
        printf("%lld", K / 2);
        for(int i = 0; i < K / 2; ++i){
            for(int j = 0; j < K / 2; ++j){
                printf("%c%lld", j ? ' ' : '\n', i * 2 + 1 + (j & 1));
            }
        }
    }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:9: error: expected ';' before 'return'
   16 |         return 0;
      |         ^~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long lint;
typedef long double llf;
typedef pair<int, int> pi;
const int MAXN = 605;
const int mod = 1e9 + 7;
#define sz(v) ((int)v.size())

int n, a[MAXN][MAXN];

int main(){
	cin >> n;
	if(n <= 500){
		cout << n << endl;
		for(int i=0; i<n; i++){
			for(int j=0; j<n; j++){
				printf("%d ", (i + j) % n + 1);
			}
			puts("");
		}
		return 0;
	}
	else{
		k = (n + 1) / 2;
		if(k % 2 == 1) k++;
		for(int i=0; i<k; i++){
			for(int j=0; j<k; j++){
				a[i][j] = (i + j) % k + 1;
				if(j % 2 == 1) a[i][j] += k;
				a[i][j] = min(a[i][j], n);
			}
		}
		for(int i=0; i<k; i++){
			for(int j=0; j<k; j++) printf("%d ", a[i][j]);
			puts("");
		}
	}
}


Compiler output:
a.cc: In function 'int main()':
a.cc:25:17: error: 'k' was not declared in this scope
   25 |                 k = (n + 1) / 2;
      |                 ^
Language: C++

#ifdef LOCAL
#  define _GLIBCXX_DEBUG
#else
#  define cerr __get_ce
#endif
#include <bits/stdc++.h>
#define ff first
#define ss second
#define szof(x) ((int)x.size())

using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
int const INF = (int)1e9 + 1e3;
ll const INFL = (ll)1e18 + 1e6;
mt19937 tw(9450189);
uniform_int_distribution<ll> ll_distr;
ll rnd(ll a, ll b) { return ll_distr(tw) % (b - a + 1) + a; }


void solve() {
	int k;
	cin >> k;
	if (k <= 500) {
		cout << k << "\n";
		for (int i = 0; i < k; ++i) {
			for (int j = 0; j < k; ++j) {
				cout << i + 1 << " ";
			}
			cout << "\n";
		}
		return;
	}

	for (int i = 1; i <= 500; ++i) {
		for (int j = 1; i * j <= k; ++j) {
			int left = k - i * j;
			if ((j + left) % i == 0 && j + left <= 500) {
				// cerr << "found " << i << " " << j << endl;
				int n = j + left;
				cout << n << "\n";
				for (int x = 0; x < j; ++x) {
					for (int y = 0; y < n; ++y) {
						cout << 1 + x * i + y % ш << " ";
					}
					cout << "\n";
				}
				for (int x = 0; x < left; ++x) {
					for (int y = 0; y < n; ++y) {
						cout << 1 + i * j + x << " ";
					}
					cout << "\n";
				}

				return;
			}
		}
	}

	assert(false);
}


int main() {
#ifdef LOCAL
	auto start_time = clock();
	cerr << setprecision(3) << fixed;
#endif
	cout << setprecision(15) << fixed;
	ios::sync_with_stdio(false);
	cin.tie(nullptr);

	int test_count = 1;
	// cin >> test_count;
	for (int test = 1; test <= test_count; ++test) {
		solve();
	}
	
#ifdef LOCAL
	auto end_time = clock();
	cerr << "Execution time: " << (end_time - start_time) * (int)1e3 / CLOCKS_PER_SEC << " ms\n";
#endif
}


Compiler output:
a.cc: In function 'void solve()':
a.cc:45:73: error: '\U00000448' was not declared in this scope
   45 |                                                 cout << 1 + x * i + y % ш << " ";
      |                                                                         ^
Language: C++

#include<iostream>
#include<cstdio>
#include<cstring>
#include<cmath>
#include<algorithm>
#include<vector>
#include<map>
#include<queue>
#define o 1000005
#define re register int
#define ll long long
#define g0(a) memset(a,0,sizeof(a))
#define gc(a,b) memcpy(a,b,sizeof(a))
#define FOR(i,a,b) for(int i=a;i<=b;i++)
#define REP(i,a,b) for(int i=a;i>=b;i--)
#define pa pair<int,int>
#define mpp make_pair
#define s1 first
#define s2 second
#define go(x) for(ll i=h[x];i;i=w[i].next)
using namespace std;
inline int read()
{
	register int data=0,w=1;
	char ch=0;
	while(ch!='-'&&(ch<'0'||ch>'9'))ch=getchar();
	if(ch=='-')w=-1,ch=getchar();
	while(ch>='0'&&ch<='9')data=(data<<1)+(data<<3)+(ch^48),ch=getchar();
	return data*w;
}
int n,a[o],Q,f[3005][3005];
const int mod=1e9+7,iv=(mod+1)>>1;
void fix(int x){
	x-=mod;x+=x>>31&mod;
}
int main()
{
	n=read();Q=read();
	FOR(i,1,n)a[i]=read();
	FOR(i,1,n)FOR(j,1,n)if(a[i]>a[j])f[i][j]=1;
	int s=1;
	while(Q--)
	{
		fix(s+=s);
		int x=read(),y=read();
		FOR(i,1,n)
		{
			if(i==x||i==y)continue;
			f[x][i]=f[y][i]=1ll*(f[x][i]+f[y][i])*iv%mod;
			f[i][x]=f[i][y]=1ll*(f[i][x]+f[i][y])*iv%mod;
		}
		f[x][y]=f[y][x]=(f[x][y]+f[y][x])*inv2%p;
	}
	int ans=0;
	FOR(i,1,n)FOR(j,i+1,n)ans=(ans+f[i][j])%mod;
	cout<<1ll*ans*s%mod<<'\n'; 
	return 0;
}

Compiler output:
a.cc: In function 'int read()':
a.cc:24:22: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   24 |         register int data=0,w=1;
      |                      ^~~~
a.cc:24:29: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   24 |         register int data=0,w=1;
      |                             ^
a.cc: In function 'int main()':
a.cc:52:51: error: 'inv2' was not declared in this scope; did you mean 'iv'?
   52 |                 f[x][y]=f[y][x]=(f[x][y]+f[y][x])*inv2%p;
      |                                                   ^~~~
      |                                                   iv
a.cc:52:56: error: 'p' was not declared in this scope
   52 |                 f[x][y]=f[y][x]=(f[x][y]+f[y][x])*inv2%p;
      |                                                        ^