criyle/codenet-compile-errors huggingface dataset:
Language: Java

import java.util.Scanner;

public class Main{
  public static void main(String[] args){
    Scanner scanner = new Scanner(System.in);
    long N = scanner.nextLong();
    long M = scanner.nextLong();
    int count = 0;

    if (N == 1 && M ==1){
      count = 1;
    }
    if (N == 1 && M > 1){
      count = M - 2;
    }
    if (N > 1 && M == 1){
      count = N - 2;
    }
    if (N > 1 && M > 1){
      count = (N - 2) * (M - 2);
    }
    System.out.println(count);
  }
}


Compiler output:
Main.java:14: error: incompatible types: possible lossy conversion from long to int
      count = M - 2;
                ^
Main.java:17: error: incompatible types: possible lossy conversion from long to int
      count = N - 2;
                ^
Main.java:20: error: incompatible types: possible lossy conversion from long to int
      count = (N - 2) * (M - 2);
                      ^
3 errors
Language: C++

#include<stdio.h>
#include<stdlib.h>
#include<math.h>
int main()
{
long a,b;
scanf("%ld %ld",&a,&b);
printf("%ld",abs(a-2)*abs(b-2))
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:32: error: expected ';' before '}' token
    8 | printf("%ld",abs(a-2)*abs(b-2))
      |                                ^
      |                                ;
    9 | }
      | ~
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
 
const int Nmax=200010;
int main() {
	ll N, M, ans=-1;
	cin >> N >> M;
	if(N===2||M==2) ans=0;
	if((N==1 && M % 2==0)||(M==1 && N % 2 == 0)) ans = 0;
	if((N==1 && M % 2==1)||(M==1 && N % 2 == 1)) ans = N+M-3;
	if(ans==-1) ans = N * M - (N*2+M*2-4); 
	cout << ans << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:15: error: expected primary-expression before '=' token
    9 |         if(N===2||M==2) ans=0;
      |               ^
Language: C++

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

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

    long long n, m;
    cin >> n >> m;

    if(n == 2 or m == 2){
        cout << 0 << endl;
        return 0;
    }else if(n == 1 or m == 1){
        cout << max(max(n, m) - 2, 1) << endl;
        return 0;
    }else{
        cout << (n - 2) * (m - 2) << endl;
    }
    
    /*
    int A[n][m] = {};
    int dx[9] = {-1, -1, 0, 0, 0, 1, 1, -1, 1};
    int dy[9] = {-1, 0, -1, 0, 1, 0, 1, 1, -1};
    REP(i, n){
        REP(j, m){
            REP(k, 9){
                int nx, ny;
                nx = i + dx[k];
                ny = j + dy[k];
                if(nx < 0 or ny < 0 or nx >= n or ny >= m){
                    continue;
                }
                A[nx][ny]++; 
            }
        }
    }

    REP(i, n){
        REP(j, m){
            cout << A[i][j] << " ";
        }
        cout << endl;
    }
    */
    
    

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:20: error: no matching function for call to 'max(long long int, int)'
   16 |         cout << max(max(n, m) - 2, 1) << endl;
      |                 ~~~^~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:16:20: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   16 |         cout << max(max(n, m) - 2, 1) << endl;
      |                 ~~~^~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:16:20: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   16 |         cout << max(max(n, m) - 2, 1) << endl;
      |                 ~~~^~~~~~~~~~~~~~~~~~
Language: C++

#include<math.h>
#include<stdlib.h>
#include<string.h>
using namespace std;

int main(){
  int n, m;
  cin >> n >> m;
  int ans = 0;

  if(n==1){
    if(m==1){
      ans = 1;
    }
    else if(m==2){
      ans = 0;
    }
    else{
      ans = m-2;
    }
  }
  else if(n==2){
    if(m==1){
      ans = 0;
    }
    else if(m==2){
      ans = 0;
    }
    else{
      ans = 0;
    }
  }
  else{
    if(m==1){
      ans = n-2;
    }
    else if(m==2){
      ans = 0;
    }
    else{
      ans = (n-2)*(m-2);
    }
  }

  cout << ans << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: 'cin' was not declared in this scope
    8 |   cin >> n >> m;
      |   ^~~
a.cc:4:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    3 | #include<string.h>
  +++ |+#include <iostream>
    4 | using namespace std;
a.cc:45:3: error: 'cout' was not declared in this scope
   45 |   cout << ans << endl;
      |   ^~~~
a.cc:45:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:45:18: error: 'endl' was not declared in this scope
   45 |   cout << ans << endl;
      |                  ^~~~
a.cc:4:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
    3 | #include<string.h>
  +++ |+#include <ostream>
    4 | using namespace std;
Language: C++

def main():
    N, M = [int(i) for i in input().split()]
    if(N == 1):
        print(M - 2)
    elif(M == 1):
        print(N - 2)
    else:
        print(N*M - (N*2 + M*2 - 4 ))
    
if __name__=="__main__":
    main()

Compiler output:
a.cc:1:1: error: 'def' does not name a type
    1 | def main():
      | ^~~
Language: C

#include <stdio.h>

int main(void)
{
   long long int n, m, u;

   scanf("%lld%lld", &n, &m);

   if(n == 1){
      if(m != 1){
         u = m - 2;
      }
      else{
         u = 1;
   }
   else{
      u = (n-2) * (m-2);
   }

   printf("%lld", u);

   return 0;
}


Compiler output:
main.c: In function 'main':
main.c:16:4: error: expected '}' before 'else'
   16 |    else{
      |    ^~~~
Language: C++

n, m = gets.split.map(&:to_i)
if n == 1 && m == 1
  puts 1
elsif n == 1 || m == 1
  puts n == 1 ? (m - 2) : (n - 2)
else
  puts (n-2) * (m-2)
end

Compiler output:
a.cc:1:1: error: 'n' does not name a type
    1 | n, m = gets.split.map(&:to_i)
      | ^
Language: C

#include<stdio.h>
int main(void) {
	unsigned long n, m, i;
	scanf("%lu%lu", &n, &m);
	printf("%lu",(n * m - (2 * m + 2 *n) + 4);
	return 0;
}


Compiler output:
main.c: In function 'main':
main.c:5:50: error: expected ')' before ';' token
    5 |         printf("%lu",(n * m - (2 * m + 2 *n) + 4);
      |               ~                                  ^
      |                                                  )
main.c:6:18: error: expected ';' before '}' token
    6 |         return 0;
      |                  ^
      |                  ;
    7 | }
      | ~
Language: C++

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


int main(){
	int n, m;
    long long c;

    cin >> n >> m;

    c = abs(n-2) * abs(m-2)

    cout << c << endl;

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:28: error: expected ';' before 'cout'
   12 |     c = abs(n-2) * abs(m-2)
      |                            ^
      |                            ;
   13 | 
   14 |     cout << c << endl;
      |     ~~~~
Language: C++

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

typedef long long ll;

int main(int argc, char* argv[])
{
  int n,m;

  std::cin >> n;
  std::cin >> m;

  if (n > m) {
    std::swap(n, m);
  }

  if (n == 1 && m == 1) {
    if (m == 1) {
      ans = 1;
    } else {
      ans = m - 2;
    }
  } else {
    ans = (n - 2) * (m - 2);
  }
  
  std::cout << ans  << std::endl;
  
  return 0;
}


Compiler output:
a.cc: In function 'int main(int, char**)':
a.cc:22:7: error: 'ans' was not declared in this scope; did you mean 'abs'?
   22 |       ans = 1;
      |       ^~~
      |       abs
a.cc:24:7: error: 'ans' was not declared in this scope; did you mean 'abs'?
   24 |       ans = m - 2;
      |       ^~~
      |       abs
a.cc:27:5: error: 'ans' was not declared in this scope; did you mean 'abs'?
   27 |     ans = (n - 2) * (m - 2);
      |     ^~~
      |     abs
a.cc:30:16: error: 'ans' was not declared in this scope; did you mean 'abs'?
   30 |   std::cout << ans  << std::endl;
      |                ^~~
      |                abs
Language: C++

/* ----------------------------
 * ABC 90 C
 * ---------------------------- */
#include <iostream>
using namespace std;

int main(){
	int n, m;
	cin >> n >> m;
	if(n == 1 && m == 1) cout << 1 << endl;
	else if(n == 1) cout << m - 2 << endl;
	else if(m == 1) cout << n - 2 << endl;
	else (n - 2) * (m - 2) << endl;
//	int ans = (n == 1)?
//					(m == 1)? 1
//					: m - 2
//				: (m == 1)? n - 2
//				: (n-2)*(m-2);
//	cout << ans << endl;
	return 0;
}
// それ自身、上下左右斜めの９マスに範囲内のマスが偶数個あれば最初の状態
// 角や辺にあるマスは表のまま
//
// o o o
// o x o
// o o o
//
// 幅や高さが 3 未満のとき
//
// o x o // 幅か高さが 1 のとき 両端だけが表のまま -> m-2
// o o   // 幅 2 高さ 1 のとき m-2 をそのまま使える
// x     // 両方 1 のとき 固定値 1
//
// o o o // 幅か高さが 2 のとき 0
// o o o // -> (m-2)*(n-2) のままでよい
//
//


Compiler output:
a.cc: In function 'int main()':
a.cc:13:32: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
   13 |         else (n - 2) * (m - 2) << endl;
      |              ~~~~~~~~~~~~~~~~~~^~~~~~~
Language: C++

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

	if (N >= 2 && M >= 2) {
		cout << (N - 2) * (M - 2) << endl;
	}
	else if ((N < 2 && M >= 2) || (N >= 2 && M < 2))
	{	
		int s = (N < M) ? N : M;
		int b = (N > M) ? N : M;
		cout << (s % 2) * (b - 2) << endl;
	}
	else if (N == 1 && M == 1)
	{
		cout << 1 << endl;
	}
	else
	{
		cout << 0 << endl;
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:9: error: 'cin' was not declared in this scope
    4 |         cin >> N >> M;
      |         ^~~
a.cc:7:17: error: 'cout' was not declared in this scope
    7 |                 cout << (N - 2) * (M - 2) << endl;
      |                 ^~~~
a.cc:7:46: error: 'endl' was not declared in this scope
    7 |                 cout << (N - 2) * (M - 2) << endl;
      |                                              ^~~~
a.cc:13:17: error: 'cout' was not declared in this scope
   13 |                 cout << (s % 2) * (b - 2) << endl;
      |                 ^~~~
a.cc:13:46: error: 'endl' was not declared in this scope
   13 |                 cout << (s % 2) * (b - 2) << endl;
      |                                              ^~~~
a.cc:17:17: error: 'cout' was not declared in this scope
   17 |                 cout << 1 << endl;
      |                 ^~~~
a.cc:17:30: error: 'endl' was not declared in this scope
   17 |                 cout << 1 << endl;
      |                              ^~~~
a.cc:21:17: error: 'cout' was not declared in this scope
   21 |                 cout << 0 << endl;
      |                 ^~~~
a.cc:21:30: error: 'endl' was not declared in this scope
   21 |                 cout << 0 << endl;
      |                              ^~~~
Language: C++

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

int main(){
  int n,m;
  cin>>n>>m;
  int a[n][m];
  fill(a,a+n*m,1);
  for(int i=0;i<n;i++){
    for(int j=0;j<m;j++){
      for(int dx=-1;dx<=1;dx++){
        for(int dy=-1;dy<=1;dy++){
          if(i+dx>=0&&i+dx<n&&j+dy>=0&&j+dy<m){
            a[i+dx][i+dy]^=1;
          }
        }
      }
    }
  }
  int count=0;
  for(int i=0;i<n;i++){
    for(int j=0;j<m;j++){
      if(a[i][j]==0){
        count+=1;
      }
    }
  }
  cout<<count<<endl;
}
 
      


Compiler output:
a.cc: In function 'int main()':
a.cc:9:7: error: no matching function for call to 'fill(int [n][m], int (*)[m], int)'
    9 |   fill(a,a+n*m,1);
      |   ~~~~^~~~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:1022:5: note: candidate: 'template<class _ForwardIterator, class _Tp> void std::fill(_ForwardIterator, _ForwardIterator, const _Tp&)'
 1022 |     fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value)
      |     ^~~~
/usr/include/c++/14/bits/stl_algobase.h:1022:5: note:   template argument deduction/substitution failed:
a.cc:9:7: note:   variable-sized array type 'int (*)[m]' is not a valid template argument
    9 |   fill(a,a+n*m,1);
      |   ~~~~^~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:86,
                 from a.cc:2:
/usr/include/c++/14/pstl/glue_algorithm_defs.h:191:1: note: candidate: 'template<class _ExecutionPolicy, class _ForwardIterator, class _Tp> __pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, void> std::fill(_ExecutionPolicy&&, _ForwardIterator, _ForwardIterator, const _Tp&)'
  191 | fill(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value);
      | ^~~~
/usr/include/c++/14/pstl/glue_algorithm_defs.h:191:1: note:   candidate expects 4 arguments, 3 provided
Language: C++

#include <iostream>
using namespace std;

int main(){
  int n,m;
  cin>>n>>m;
  int a[n][m];
  fill(a,a+n*m,1);
  for(int i=0;i<n;i++){
    for(int j=0;j<m;j++){
      for(int dx=-1;dx<=1;dx++){
        for(int dy=-1;dy<=1;dy++){
          if(i+dx>=0&&i+dx<n&&j+dy>=0&&j+dy<m){
            a[i+dx][i+dy]^=1;
          }
        }
      }
    }
  }
  int count=0;
  for(int i=0;i<n;i++){
    for(int j=0;j<m;j++){
      if(a[i][j]==0){
        count+=1;
      }
    }
  }
  cout<<count<<endl;
}
 
      

Compiler output:
a.cc: In function 'int main()':
a.cc:8:7: error: no matching function for call to 'fill(int [n][m], int (*)[m], int)'
    8 |   fill(a,a+n*m,1);
      |   ~~~~^~~~~~~~~~~
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:1022:5: note: candidate: 'template<class _ForwardIterator, class _Tp> void std::fill(_ForwardIterator, _ForwardIterator, const _Tp&)'
 1022 |     fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value)
      |     ^~~~
/usr/include/c++/14/bits/stl_algobase.h:1022:5: note:   template argument deduction/substitution failed:
a.cc:8:7: note:   variable-sized array type 'int (*)[m]' is not a valid template argument
    8 |   fill(a,a+n*m,1);
      |   ~~~~^~~~~~~~~~~
Language: C++

#include <iostream>
#include <algorithm>
#include <vector>
#include <queue>
#include <string.h>
#include <math.h>
typedef long long ll;
#define MAX(x, y)	(((x) > (y))? (x) : (y))
#define MIN(x, y)	(((x) < (y))? (x) : (y))
#define ABS(x)		(((x) < 0)? (-1*(x)) : (x))
#define REP(i,x,y)	for (int (i)=(x);(i)<(y);(i)++)
#define MEMCLR(X)	memset((X),0,sizeof((X)))

using namespace std;
typedef pair<int, int> Point;
typedef vector<vector<Point>> Graph;

intN,M;

int main() {
	cin >> N >> M;
	
	cout << ABS((N-2)*(N-2));

	return 0;
}


Compiler output:
a.cc:18:1: error: 'intN' does not name a type; did you mean 'int'?
   18 | intN,M;
      | ^~~~
      | int
a.cc: In function 'int main()':
a.cc:21:16: error: 'N' was not declared in this scope
   21 |         cin >> N >> M;
      |                ^
a.cc:21:21: error: 'M' was not declared in this scope
   21 |         cin >> N >> M;
      |                     ^
Language: C++

N,M = map(int, input().split())

if N==1 and M==1:
    print(1)
elif N==1:
    print(M-2)
elif M==1:
    print(N-2)
else:
    print((N-2)*(M-2))

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

#include <bits/stdc++.h>
using namespace std;
 
int main(){
  int N,M;
  cin >> N >> M;
  
  if(N==1 || M==1){
    cout << (N-2<0)? M-2:N-2 << endl;
  }else{
    cout << (N-2)*(M-2) << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:30: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
    9 |     cout << (N-2<0)? M-2:N-2 << endl;
      |                          ~~~~^~~~~~~
Language: C++

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

int main(){
  int N,M;
  cin >> N >> M;
  
  if(N==1 || M==1){
    cout << (N-2<0)? M-2:N-2 << endl;
  }else{
  	cout << (N-2)*(M-2) << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:30: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
    9 |     cout << (N-2<0)? M-2:N-2 << endl;
      |                          ~~~~^~~~~~~
Language: C++

#include<iostream>
using namespace std;
int main()
{
    // 弐次元配列
    int N;
    cin >> N;
    int M;
    cin >> M;
    bool card[N][M];
    int a,b;
    for(a=0;a<=(N-1);a++){
     for(b=0;b<=(M-1);b++){
card[a][b]=false;
}}


    for (int i=0; i<=(N-1); i++){
     for (int j=0; j<=(M-1); j++){
if(i!=0){
      card[i-1][j-1]=!card[i-1][j-1];
card[i-1][j]=!card[i-1][j];
card[i-1][j+1]=!card[i-1][j+1];
}
else{
}
if(j!=0){
card[i][j-1]=!card[i][j-1];
card[i+1][j-1]=!card[i+1][j-1];
}
else{
}

card[i+1][j]=!card[i+1][j];


card[i+1][j+1]=!card[i+1][j+1];
card[i][j+1]=!card[i][j+1];
}}
int singiti[N][M];
int c,d;
for(c=0;c<=N;c++){
for(d=0;d<=M;d++){
singiti[c][d]=card[c][d];
}}
int sum=0;
int e,f;
for(e=0;e<=N;e++){
for(f=0;f<=M;f++){
sum=sum+singiti[e][f];
}}



    // 出力
    cout << sum << ;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:56:20: error: expected primary-expression before ';' token
   56 |     cout << sum << ;
      |                    ^
Language: Java

import java.util.Scanner;

public classMain {
	public static void main(String[] args) {
		Scanner stdin =new Scanner(System.in);
		int n=stdin.nextInt();
		int m=stdin.nextInt();
		int ans=0;

		if(n>1 && m>1)
			ans=(n-2)*(m-2);
		else if(n==1 && m>1)
			ans=m-2;
		else if(m==1 && n>1)
			ans=n-2;
		else //if(n==1 && m==1)
			ans=1;
		System.out.println(ans);

	}

Compiler output:
Main.java:3: error: class, interface, enum, or record expected
public classMain {
       ^
Main.java:4: error: unnamed classes are a preview feature and are disabled by default.
	public static void main(String[] args) {
	              ^
  (use --enable-preview to enable unnamed classes)
2 errors
Language: C++

#include <iostream>
using namespace std;
int main()
{
    int n , m ;
    cin >> n >>m;
    int r;
    if(n<m)
    {
        int t; t=n n=m; m=t;
    }//n>=mになった
    switch (m)
    {
        case 1:
            r=n-2;
            break;
        case 2: 
            r=0
            break;
        default: 
            r=n*m-n-m+1;
            break;
    }
    cout << r << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:19: error: expected ';' before 'n'
   10 |         int t; t=n n=m; m=t;
      |                   ^~
      |                   ;
a.cc:18:16: error: expected ';' before 'break'
   18 |             r=0
      |                ^
      |                ;
   19 |             break;
      |             ~~~~~
Language: C++

#include <iostream>
using namespace tsd;
int main()
{
    int n , m ;
    cin >> n >>m;
    int r;
    if(n<m)
    {
        int t; t=n n=m; m=t;
    }//n>=mになった
    switch (m)
    {
        case 1:
            r=n-2;
            break;
        case 2: 
            r=0
            break;
        default: 
            r=n*m-n-m+1;
            break;
    }
    cout << r << endl;
    return 0;
}

Compiler output:
a.cc:2:17: error: 'tsd' is not a namespace-name
    2 | using namespace tsd;
      |                 ^~~
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 >> n >>m;
      |     ^~~
      |     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:10:19: error: expected ';' before 'n'
   10 |         int t; t=n n=m; m=t;
      |                   ^~
      |                   ;
a.cc:18:16: error: expected ';' before 'break'
   18 |             r=0
      |                ^
      |                ;
   19 |             break;
      |             ~~~~~
a.cc:24:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   24 |     cout << 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:24:18: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   24 |     cout << r << 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++

  
int main(){
 long long int n,m;
 scanf("%d%d",&n,&m);

 if(n>2&&m>2){
        printf("%d\n",(n-2)*(m-2));
 }else if(n==2){
        if(m>2){
                printf("%d\n",2*(m-2));
        }else{
                printf ("0\n");
        }
 }else if(m==2){
        if(n>2){
                printf("%d\n",2*(n-2));
        }else{
                printf ("0\n");
        }
 }else if(n==1){
        if(m==1){
                printf("1\n");
        }else{
                printf("%d\n",m-2);
        }
 }else{
        printf("%d\n",n-2);
 }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:2: error: 'scanf' was not declared in this scope
    4 |  scanf("%d%d",&n,&m);
      |  ^~~~~
a.cc:7:9: error: 'printf' was not declared in this scope
    7 |         printf("%d\n",(n-2)*(m-2));
      |         ^~~~~~
a.cc:1:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
  +++ |+#include <cstdio>
    1 | 
a.cc:10:17: error: 'printf' was not declared in this scope
   10 |                 printf("%d\n",2*(m-2));
      |                 ^~~~~~
a.cc:10:17: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
a.cc:12:17: error: 'printf' was not declared in this scope
   12 |                 printf ("0\n");
      |                 ^~~~~~
a.cc:12:17: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
a.cc:16:17: error: 'printf' was not declared in this scope
   16 |                 printf("%d\n",2*(n-2));
      |                 ^~~~~~
a.cc:16:17: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
a.cc:18:17: error: 'printf' was not declared in this scope
   18 |                 printf ("0\n");
      |                 ^~~~~~
a.cc:18:17: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
a.cc:22:17: error: 'printf' was not declared in this scope
   22 |                 printf("1\n");
      |                 ^~~~~~
a.cc:22:17: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
a.cc:24:17: error: 'printf' was not declared in this scope
   24 |                 printf("%d\n",m-2);
      |                 ^~~~~~
a.cc:24:17: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
a.cc:27:9: error: 'printf' was not declared in this scope
   27 |         printf("%d\n",n-2);
      |         ^~~~~~
a.cc:27:9: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
Language: C++

#include <bits/stdc++.h>

using namespace std;

typedef long long LL;
typedef vector<int> VI;
typedef pair<int, int> PI;

int main() {
	int n, m;
	cin >> n >> m;
	if (n * m == 1) {
		cout << 1 << endl;
	}
	int ans = 0;
	int mi = min(n, m);
	if (mi <= 1)
		ans = max(n, m) - 2;
	else
		ans = (n - 2) * (m - 2);
	cout << ans << endl;
	return 0;


Compiler output:
a.cc: In function 'int main()':
a.cc:22:18: error: expected '}' at end of input
   22 |         return 0;
      |                  ^
a.cc:9:12: note: to match this '{'
    9 | int main() {
      |            ^
Language: C++

    #include <iostream>
    #include <numeric>
    #include <vector>
    #include <string>
    #include <algorithm>
    using namespace std;
    int main(){
      long long int n,m;
      cin>>m>>n;
      long long int square[m+2][n+2];
      //i;m→縦に広がる
      //k;n→横に広がる
      //カードなし→0:カード表→2で割り切れない:カード裏→2で割り切れる
      for(int i=0;i<(m+2);i++){
        for(int k=0;k<(n+2);k++){
          if(i==0||i==m+1){
    	square[i][k]=0;
          }else{
    	if(k==0||k==n+1){
    	  square[i][k]=0;
    	}else{
    	  square[i][k]=1;
    	}
          }
        }
      }
      for(int i=0;i<(m+2);i++){
        for(int k=0;k<(n+2);k++){
          if(square[i][k]!=0){
    	if(square[i-1][k-1]!=0)square[i-1][k-1]+=1;
    	if(square[i][k-1]!=0)square[i][k-1]+=1;
    	if(square[i+1][k-1]!=0)square[i+1][k-1]+=1;
    	if(square[i-1][k]!=0)square[i-1][k]+=1;
    	if(square[i][k]!=0)square[i][k]+=1;
    	if(square[i+1][k]!=0)square[i+1][k]+=1;
    	if(square[i-1][k+1]!=0)square[i-1][k+1]+=1;
    	if(square[i][k+1]!=0)square[i][k+1]+=1;
    	if(square[i+1][k+1]!=0)square[i+1][k+1]+=1;
          }
        }
      }
      long long int ans=0;
      for(int i=0;i<(m+2);i++){
        for(int k=0;k<(n+2);k++){
          //cout<<square[i][k]<<" ";
          if((square[i][k]!=0)&&/*(square[i][k]%2==0)*/)ans++;
        }
        //cout<<endl;
      }
      cout<<ans<<endl;
    }

Compiler output:
a.cc: In function 'int main()':
a.cc:46:56: error: expected primary-expression before ')' token
   46 |           if((square[i][k]!=0)&&/*(square[i][k]%2==0)*/)ans++;
      |                                                        ^
Language: C++

#include<iostream>
#include<vector>
#include<algorithm>
#include<string>
#include<string.h>
#include<math.h>
#include<utility>
using namespace std;
typedef long long int ll;
typedef pair<ll,ll> P;
#define REP(i,n) for(ll i=0;i<n;i++)
#define FOR(i,m,n) for(ll i=m;i<n;i++)
#define REPR(i,n) for(ll i=n;i>=0;i--)
#define FORR(i,n,m) for(ll i=n;i>=m;i--)

int main(){
    ll n,m;
    cin >> n >> m;
    if(n==1&&m==1){
        cout << 1 << endl;
    }else if(n<2||m<2){
        cout << max(0,(int)((n*m)-2) << endl;
        return 0;
    }else{
        cout <<  max(0,(int)(n-2))*max(0,(int)(m-2)) << endl;
        return 0;
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:38: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
   22 |         cout << max(0,(int)((n*m)-2) << endl;
      |                       ~~~~~~~~~~~~~~~^~~~~~~
Language: C++

#include<cstring>
#include<cstdio>
#include<cmath>
#include<iostream>
#include<algorithm>
#include<queue>
#include<map>
using namespace std;
const long long Maxn=1e6;
typedef long long ll;

int main(){
	int n,m;
	int ans=0;
	scanf("%d %d",&n,&m);
	if(n*m==1) ans=1;
	if(n==2||m==2) ans=0;
	if((n==1&&m>=3||(m==1&&n>=3)) ans=n*m-2;
	else ans=n*m-2*n-2*m+4;
	printf("%d",ans);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:38: error: expected ';' before 'ans'
   18 |         if((n==1&&m>=3||(m==1&&n>=3)) ans=n*m-2;
      |                                      ^~~~
      |                                      ;
a.cc:19:9: error: expected primary-expression before 'else'
   19 |         else ans=n*m-2*n-2*m+4;
      |         ^~~~
a.cc:18:49: error: expected ')' before 'else'
   18 |         if((n==1&&m>=3||(m==1&&n>=3)) ans=n*m-2;
      |           ~                                     ^
      |                                                 )
   19 |         else ans=n*m-2*n-2*m+4;
      |         ~~~~
Language: C++

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

int main()
{
    long long n,m;
    cin >> n >> m;
    long long ans;
    if(n==2||m==2) ans=0;
    else if(n==1&&m==1) ans=1
    else if(n==1) ans=m-2;
    else if(m==1) ans=n-2;
    else {
        ans=n*m-2*(n+m)+4;
    }
    cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:30: error: expected ';' before 'else'
   10 |     else if(n==1&&m==1) ans=1
      |                              ^
      |                              ;
   11 |     else if(n==1) ans=m-2;
      |     ~~~~
Language: C++

#include<iostream>
#include<algorithm>
#include<math.h>
using namespace std;

int main(){
    long longint n, m;
    cin >> n >> m;
    if(n == 1 && m != 1) cout << m - 2 << endl;
    if else (n != 1 && m == 1) cout << n - 2 << endl;
    if else(n == 1 && m == 1) cout << 1 << endl;
    if else(n != 1 && m != 1) cout << (n - 2) * (m - 2) << endl;
    
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:18: error: expected initializer before 'n'
    7 |     long longint n, m;
      |                  ^
a.cc:8:12: error: 'n' was not declared in this scope; did you mean 'yn'?
    8 |     cin >> n >> m;
      |            ^
      |            yn
a.cc:8:17: error: 'm' was not declared in this scope; did you mean 'tm'?
    8 |     cin >> n >> m;
      |                 ^
      |                 tm
a.cc:10:8: error: expected '(' before 'else'
   10 |     if else (n != 1 && m == 1) cout << n - 2 << endl;
      |        ^~~~
      |        (
a.cc:11:8: error: expected '(' before 'else'
   11 |     if else(n == 1 && m == 1) cout << 1 << endl;
      |        ^~~~
      |        (
a.cc:12:8: error: expected '(' before 'else'
   12 |     if else(n != 1 && m != 1) cout << (n - 2) * (m - 2) << endl;
      |        ^~~~
      |        (
Language: C++

#include<stdio.h>
#include<stdlib.h>

//omote = 1
//ura = 0
int **card;

int main(){
  int i,j;
  int k,l;
  int n,m;
  int count = 0;

  scanf("%d %d", &n, &m);

  card = malloc(sizeof(int *) * n);
  for (i=0;i<n;i++) {
    card[i] = malloc(sizeof(int) * m);
  }

  for (i=0;i<n;i++) {
    for (j=0;j<m;j++) {
      card[i][j] = 1;
      printf("%d\n", card[i][j]);
    }
  }

  for(i=0; i<n; i++){
    for(j=0;j<m;j++){
      if( (i == 0 && j == 0)){
	card[i][j] = 1 - card[i][j];
	card[i][j+1] = 1 - card[i][j+1];
	card[i+1][j] = 1 - card[i+1][j];
	card[i+1][j+1] = 1 - card[i+1][j+1];
      }

      else if( i == n-1 && j == m -1){ 
	card[i][j] = 1 - card[i][j];
	card[i][j-1] = 1 - card[i][j-1];
	card[i+1][j] = 1 - card[i+1][j];
	card[i+1][j-1] = 1 - card[i+1][j-1];
      }

      else if( i ==0){
	card[i][j] = 1 - card[i][j];
	card[i][j-1] = 1 - card[i][j-1];
	card[i][j+1] = 1 - card[i][j+1];
	
	card[i+1][j] = 1 - card[i+1][j];
	card[i+1][j-1] = 1 - card[i+1][j-1];
	card[i+1][j+1] = 1 - card[i+1][j+1];
      }
	
      else if( i == n - 1){
	card[i][j] = 1 - card[i][j];
	card[i][j-1] = 1 - card[i][j-1];
	card[i][j+1] = 1 - card[i][j+1];
	
	card[i-1][j] = 1 - card[i-1][j];
	card[i-1][j-1] = 1 - card[i-1][j-1];
	card[i-1][j+1] = 1 - card[i-1][j+1];
      }



     else if( j ==0){
	card[i][j] = 1 - card[i][j];
	card[i][j+1] = 1 - card[i][j+1];
	
	card[i+1][j] = 1 - card[i+1][j];
	card[i+1][j+1] = 1 - card[i+1][j+1];

	card[i-1][j] = 1 - card[i-1][j];
	card[i-1][j+1] = 1 - card[i-1][j+1];

      }

     else if( j ==m-1){
      card[i][j] = 1 - card[i][j];
      card[i][j-1] = 1 - card[i][j-1];
      
      card[i+1][j] = 1 - card[i+1][j];
      card[i+1][j-1] = 1 - card[i+1][j-1];
      
      card[i-1][j] = 1 - card[i-1][j];
      card[i-1][j-1] = 1 - card[i-1][j-1];
      
     }
      
     else{
       card[i][j] = 1 - card[i][j];
       card[i][j-1] = 1 - card[i][j-1];
       card[i][j+1] = 1 - card[i][j+1];
       
       card[i-1][j] = 1 - card[i-1][j];
       card[i-1][j-1] = 1 - card[i-1][j-1];
       card[i-1][j+1] = 1 - card[i-1][j+1];
       
       card[i+1][j] = 1 - card[i+1][j];
       card[i+1][j-1] = 1 - card[i+1][j-1];
       card[i+1][j+1] = 1 - card[i+1][j+1];
     }
      
    }
  }
  
  



   for (i=0;i<n;i++) {
    for (j=0;j<m;j++) {
      if(card[i][j] == 0) count++;
    }
  }
   
  for (i=0;i<n;i++) {
    free(card[i]);
  }
  free(card);


  printf("%d", count);
  
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:16:16: error: invalid conversion from 'void*' to 'int**' [-fpermissive]
   16 |   card = malloc(sizeof(int *) * n);
      |          ~~~~~~^~~~~~~~~~~~~~~~~~~
      |                |
      |                void*
a.cc:18:21: error: invalid conversion from 'void*' to 'int*' [-fpermissive]
   18 |     card[i] = malloc(sizeof(int) * m);
      |               ~~~~~~^~~~~~~~~~~~~~~~~
      |                     |
      |                     void*
Language: C++

#include<iostream>
#include<algorithm>
#include<math.h>
using namespace std;

int main(){
    long long int n, m;
    cin >> n >> m;
    if(n == 1 && m != 1) cout << m - 2 << endl;
    if else (n != 1 && m == 1) cout << n - 2 << endl;
    if else(n == 1 && m == 1) cout << 1 << endl;
    if else(n != 1 && m != 1) cout << (n - 2) * (m - 2) << endl;
    
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:8: error: expected '(' before 'else'
   10 |     if else (n != 1 && m == 1) cout << n - 2 << endl;
      |        ^~~~
      |        (
a.cc:11:8: error: expected '(' before 'else'
   11 |     if else(n == 1 && m == 1) cout << 1 << endl;
      |        ^~~~
      |        (
a.cc:12:8: error: expected '(' before 'else'
   12 |     if else(n != 1 && m != 1) cout << (n - 2) * (m - 2) << endl;
      |        ^~~~
      |        (
Language: C++

#include<iostream>
using namespace std;
int main(){
	long long aa,bb,1a,b;
	cin>>a>>b;
	if(a==1)
		aa=1;
	else
		aa=a-2;
	if(b==1)
		bb=1;
	else
		bb=b-2;
	cout<<aa*bb;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:4:25: error: expected unqualified-id before numeric constant
    4 |         long long aa,bb,1a,b;
      |                         ^~
a.cc:5:14: error: 'a' was not declared in this scope; did you mean 'aa'?
    5 |         cin>>a>>b;
      |              ^
      |              aa
a.cc:5:17: error: 'b' was not declared in this scope; did you mean 'bb'?
    5 |         cin>>a>>b;
      |                 ^
      |                 bb
Language: C++

#include<iostream>
#include<stdlib.h>
#include<stdio.h>
using namespace std;
int N,M,cunt;
int main(){
    cin>>N>>M;  
    int** flag;
    flag=(int**)malloc(sizeof(int*)*(N+2));
    for(int i=0;i<N+2;i++)
        flag[i]=(int*)malloc(sizeof(int)*(M+2));

    for(int i=1;i<=N;i++){
        for(int j=1;j<=M;j++)
            flag[i][j]=0; 
    }   
    for(int i=1;i<=N;i++){
        for(int j=1;j<=M;j++){
                flag[i-1][j-1]++;
                flag[i-1][j]++;
                flag[i-1][j+1]++;
                flag[i][j-1]++;
                flag[i][j]++;
                flag[i][j+1]++;
                flag[i+1][j-1]++;
                flag[i+1][j]++;
                flag[i+1][j+1]++;
        }   
    }   
    for(int i=1;i<=N;i++){
        for(int j=1;j<=M;j++){
            cunt+=(flag[i][j]&1?1:0);                               
        }   
    }   
    cout<<cunt<<"\n";                               
    for(int i=0;i<N+2;i++)free(flag[i]);
    free(flag);

        
    return 0;
                                                                    }
}                

Compiler output:
a.cc:42:1: error: expected declaration before '}' token
   42 | }
      | ^
Language: Java

import java.util.Scanner;

public class Q3 {

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

		int n = scan.nextInt();
		int m = scan.nextInt();

		int a[][] = new int[n][m];
		int cnt = 0;

		for (int i = 0; i < n; i++) {
			for (int j = 0; j < m; j++) {
				a[i][j] = 0;
			}
		}

		// for (int i = 0; i < n; i++) {
		// for (int j = 0; j < m; j++) {
		//
		// if (0 <= i-1 && n > i-1 && 0 <= j-1 && m > j-1)
		// a[i-1][j-1] = task(a[i-1][j-1]);
		//
		// if (0 <= i-1 && n > i-1 && 0 <= j && m > j)
		// a[i-1][j] = task(a[i-1][j]);
		//
		// if (0 <= i-1 && n > i-1 && 0 <= j+1 && m > j+1)
		// a[i-1][j+1] = task(a[i-1][j+1]);
		//
		// if (0 <= i && n > i && 0 <= j-1 && m > j-1)
		// a[i][j-1] = task(a[i][j-1]);
		//
		// if (0 <= i && n > i && 0 <= j && m > j)
		// a[i][j] = task(a[i][j]);
		//
		// if (0 <= i && n > i && 0 <= j+1 && m > j+1)
		// a[i][j+1] = task(a[i][j+1]);
		//
		// if (0 <= i+1 && n > i+1 && 0 <= j-1 && m > j-1)
		// a[i+1][j-1] = task(a[i+1][j-1]);
		//
		// if (0 <= i+1 && n > i+1 && 0 <= j && m > j)
		// a[i+1][j] = task(a[i+1][j]);
		//
		// if (0 <= i+1 && n > i+1 && 0 <= j+1 && m > j+1)
		// a[i+1][j+1] = task(a[i+1][j+1]);
		// }
		// }
		//
		// for (int i = 0; i < n; i++) {
		// for (int j = 0; j < m; j++) {
		// cnt = cnt + a[i][j];
		// }
		// }

		for (int i = 0; i < n; i++) {
			for (int j = 0; j < m; j++) {
				int temp = 0;
				if (0 <= i - 1 && n > i - 1 && 0 <= j - 1 && m > j - 1)
					temp++;

				if (0 <= i - 1 && n > i - 1 && 0 <= j && m > j)
					temp++;

				if (0 <= i - 1 && n > i - 1 && 0 <= j + 1 && m > j + 1)
					temp++;

				if (0 <= i && n > i && 0 <= j - 1 && m > j - 1)
					temp++;

				if (0 <= i && n > i && 0 <= j && m > j)
					temp++;

				if (0 <= i && n > i && 0 <= j + 1 && m > j + 1)
					temp++;

				if (0 <= i + 1 && n > i + 1 && 0 <= j - 1 && m > j - 1)
					temp++;

				if (0 <= i + 1 && n > i + 1 && 0 <= j && m > j)
					temp++;

				if (0 <= i + 1 && n > i + 1 && 0 <= j + 1 && m > j + 1)
					temp++;
				cnt = cnt + temp%2;
			}
		}

		System.out.println(cnt);
	}

	static int task(int a) {
		if (a == 1) {
			return 0;
		} else {
			return 1;
		}
	}

}

Compiler output:
Main.java:3: error: class Q3 is public, should be declared in a file named Q3.java
public class Q3 {
       ^
1 error
Language: C++

#include<cstdio>
 
int main(){
	int N, M;
	scanf("%d %d", &N, &M);
	if(N == 1 && M == 1){
		printf("1\n");
		return 0;
	}
	if(N == 1){
		printf("%d\n", M-2);
		return 0;
	}
	if(M == 1){
		printf("%d\n", N-2);
		return 0;
	}
	printf("%lld\n", (N - 2)*(M - 2));
	return 0;

Compiler output:
a.cc: In function 'int main()':
a.cc:19:18: error: expected '}' at end of input
   19 |         return 0;
      |                  ^
a.cc:3:11: note: to match this '{'
    3 | int main(){
      |           ^
Language: C++

#include<stdio.h>
#include<stdlib.h>
#include<stdint.h>

int main()
{
    __int64 n,m;
    scanf("%I64d%I64d",&n,&m);
    __int64 num;
    __int64 i=n-2,j=m-2;
    num = i*j;
    if(num>=0)
    {
        printf("%I64d",num);

    }
    else
    {
        printf("%I64d",-num);

    }
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:5: error: '__int64' was not declared in this scope; did you mean '__int64_t'?
    7 |     __int64 n,m;
      |     ^~~~~~~
      |     __int64_t
a.cc:8:25: error: 'n' was not declared in this scope
    8 |     scanf("%I64d%I64d",&n,&m);
      |                         ^
a.cc:8:28: error: 'm' was not declared in this scope
    8 |     scanf("%I64d%I64d",&n,&m);
      |                            ^
a.cc:9:12: error: expected ';' before 'num'
    9 |     __int64 num;
      |            ^~~~
      |            ;
a.cc:10:12: error: expected ';' before 'i'
   10 |     __int64 i=n-2,j=m-2;
      |            ^~
      |            ;
a.cc:11:5: error: 'num' was not declared in this scope; did you mean 'enum'?
   11 |     num = i*j;
      |     ^~~
      |     enum
a.cc:11:11: error: 'i' was not declared in this scope
   11 |     num = i*j;
      |           ^
a.cc:11:13: error: 'j' was not declared in this scope
   11 |     num = i*j;
      |             ^
Language: C++

#include<stdio.h>

int main()
{
    __int64 n,m;
    scanf("%I64d%I64d",&n,&m);
    __int64 num;
    __int64 i=n-2,j=m-2;
    num = i*j;
    if(num>=0)
        printf("%I64d",num);
    else
        printf("%I64d",-num);
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:5: error: '__int64' was not declared in this scope; did you mean '__int64_t'?
    5 |     __int64 n,m;
      |     ^~~~~~~
      |     __int64_t
a.cc:6:25: error: 'n' was not declared in this scope
    6 |     scanf("%I64d%I64d",&n,&m);
      |                         ^
a.cc:6:28: error: 'm' was not declared in this scope
    6 |     scanf("%I64d%I64d",&n,&m);
      |                            ^
a.cc:7:12: error: expected ';' before 'num'
    7 |     __int64 num;
      |            ^~~~
      |            ;
a.cc:8:12: error: expected ';' before 'i'
    8 |     __int64 i=n-2,j=m-2;
      |            ^~
      |            ;
a.cc:9:5: error: 'num' was not declared in this scope; did you mean 'enum'?
    9 |     num = i*j;
      |     ^~~
      |     enum
a.cc:9:11: error: 'i' was not declared in this scope
    9 |     num = i*j;
      |           ^
a.cc:9:13: error: 'j' was not declared in this scope
    9 |     num = i*j;
      |             ^
Language: C++


#include<cstdio>
#include<string>
#include <iostream>

using namespace std;
char arr[4][4];

int main()
{
	int n, m;
	scanf("%d %d", &n, &m);
	if (n >= 2 && m >= 2)
	{
		printf("%lld", long long int((n - 2))*(m - 2));
	}
	else
		printf("%lld", n*m - 2 < 0 ? 1 : long long int(n * m - 2));
	
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:32: error: expected primary-expression before 'long'
   15 |                 printf("%lld", long long int((n - 2))*(m - 2));
      |                                ^~~~
a.cc:18:50: error: expected primary-expression before 'long'
   18 |                 printf("%lld", n*m - 2 < 0 ? 1 : long long int(n * m - 2));
      |                                                  ^~~~
Language: C++

# pragma warning(disable:4996)
#include<cstdio>
#include<string>
#include <iostream>
using namespace std;
char arr[4][4];

int main()
{
	int n, m;
	scanf("%d %d", &n, &m);
	if (n >= 2 && m >= 2)
	{
		printf("%lld", long long int((n - 2))*(m - 2));
	}
	else
		printf("%lld", n*m - 2 < 0 ? 1 : long long int(n * m - 2));
	
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:32: error: expected primary-expression before 'long'
   14 |                 printf("%lld", long long int((n - 2))*(m - 2));
      |                                ^~~~
a.cc:17:50: error: expected primary-expression before 'long'
   17 |                 printf("%lld", n*m - 2 < 0 ? 1 : long long int(n * m - 2));
      |                                                  ^~~~
Language: C++

#include <cstdio>

using namespace std;

int main()
{
    int a, b;
    scanf("%d %d", &a, &b);
    
    if (a == 1 && b == 1)
    {
        printf("1");
        return 0;
    }
    if (a == 1)
    {
        printf("%d", d - 2);
        return 0;
    }
    if (b == 1)
    {
        printf("%d", a - 2);
        return 0;
    }
    
    printf("%d", (a - 2) * (b - 2));
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:22: error: 'd' was not declared in this scope
   17 |         printf("%d", d - 2);
      |                      ^
Language: C++

# pragma warning(disable:4996)
#include<cstdio>
#include<string>
#include <iostream>
#include<Windows.h>
using namespace std;
char arr[4][4];

int main()
{
	int n, m;
	scanf("%d %d", &n, &m);
	if (n >= 2 && m >= 2)
	{
		printf("%d", (n - 2)*(m - 2));
	}
	else
		printf("%d", n*m - 2 < 0 ? 1 : n * m - 2);
	system("pause");
}

Compiler output:
a.cc:5:9: fatal error: Windows.h: No such file or directory
    5 | #include<Windows.h>
      |         ^~~~~~~~~~~
compilation terminated.
Language: C

/*
 AtCoder XXX 000
 */
 
#include <stdio.h>

int main(void){
  int n,m;
  
  scanf("%d %d",&n,&m);
  printf("%ull\n",(unsigned long long)(n-1)*(m-1)
  
}

Compiler output:
main.c: In function 'main':
main.c:11:50: error: expected ')' before '}' token
   11 |   printf("%ull\n",(unsigned long long)(n-1)*(m-1)
      |         ~                                        ^
      |                                                  )
   12 | 
   13 | }
      | ~                                                 
main.c:11:50: error: expected ';' before '}' token
   11 |   printf("%ull\n",(unsigned long long)(n-1)*(m-1)
      |                                                  ^
      |                                                  ;
   12 | 
   13 | }
      | ~
Language: C++

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

#define INT int64_t
#define REP(i,a,b) for(INT i=a;i<b;i++)
#define rep(i,n) REP(i,0,n)

int main(){
unsigned int64_t n,m;
cin >> n >> m;
if(n <= 2 && m <= 2){ n=0; m=0;}
else if(n <= 2){ n = 1; m-=2;}
else if(m <= 2){ m = 1;n-=2;}

cout<<n*m<<endl;

return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:18: error: expected initializer before 'n'
   10 | unsigned int64_t n,m;
      |                  ^
a.cc:11:8: error: 'n' was not declared in this scope
   11 | cin >> n >> m;
      |        ^
a.cc:11:13: error: 'm' was not declared in this scope; did you mean 'tm'?
   11 | cin >> n >> m;
      |             ^
      |             tm
Language: Java

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

public class C
{
  
  public static void main(String[] args) throws IOException
  {
    BufferedReader r = new BufferedReader(new InputStreamReader(System.in), 1);
    String s = r.readLine();
    String[] sl = s.split("[\\s]+");
    long a = Long.parseLong(sl[0]);
    long b = Long.parseLong(sl[1]);
    if (b < a)
    {
      long t = a;
      a = b;
      b = t;
    }
    
    if(a == 1)
    System.out.println(b == 1 ? 1 : b - 2);
    else if(a == 2)
      System.out.println(0);
    else
      System.out.println((a - 2) * (b - 2));
  }
  
}

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

#include <iostream>
#include <string>
#include <vector>
#include <cmath>
using namespace std;

typedef long long ll;
ll N,M;
int main(){
	cin >> N >> M;
	if(M==1||N==1) cout << max(M,N)-2 << endl;
	else if()
	else cout << (N-2)*(M-2) << endl;	
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:17: error: expected primary-expression before ')' token
   12 |         else if()
      |                 ^
a.cc:13:9: error: expected primary-expression before 'else'
   13 |         else cout << (N-2)*(M-2) << endl;
      |         ^~~~
Language: C++

#include <bits/stdc++.h>
#define P pair<int,int>
#define All(v) (v).begin(), (v).end()
#define pb(x) push_back(x)
typedef long long ll;
using namespace std;
const int INF = 1e9 + 7, MOD = 1e9 + 7;
const ll LINF = 1e18;
int main() {
	int n, m;
	cin >> n >> m;
	int tmp = (n - 2) * (m - 2);
	if (tmp >= 0) {
		cout << tmp << endl;
	} else {
		cout << 0 << endl;s
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:35: error: 's' was not declared in this scope
   16 |                 cout << 0 << endl;s
      |                                   ^