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

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

int main(){
    int a,b,c,d;
    cin >> a >> b >> c >> d;
    if(b<=c||d<a)cout << 0 << endl;
    else cout << min(abs(a-d),abs(b-c),abs(a-b),abs(c-d)) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:21: error: no matching function for call to 'min(int, int, int, int)'
    8 |     else cout << min(abs(a-d),abs(b-c),abs(a-b),abs(c-d)) << 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:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   candidate expects 2 arguments, 4 provided
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 4 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 4 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   candidate expects 2 arguments, 4 provided
Language: C++

#include <iostream>
#include <algorithm>

using namespace std;

int main(){
  int a,b,c,d;
  cin>>a>>b>>c>>d;
  
  cout<<(((min(b,d))-(max(a,c))>=0)?((min(b,d))-(max(a,c)):0)<<endl;

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:59: error: expected ')' before ':' token
   10 |   cout<<(((min(b,d))-(max(a,c))>=0)?((min(b,d))-(max(a,c)):0)<<endl;
      |                                     ~                     ^
      |                                                           )
a.cc:10:68: error: expected ':' before ';' token
   10 |   cout<<(((min(b,d))-(max(a,c))>=0)?((min(b,d))-(max(a,c)):0)<<endl;
      |                                                                    ^
      |                                                                    :
a.cc:10:68: error: expected primary-expression before ';' token
a.cc:10:68: error: expected ')' before ';' token
   10 |   cout<<(((min(b,d))-(max(a,c))>=0)?((min(b,d))-(max(a,c)):0)<<endl;
      |         ~                                                          ^
      |                                                                    )
Language: C++

#include <iostream>
#include <algorithm>

using namespace std;

int main(){
  int A,B,C,D;

  cin>>A>>B>>C>>D;
  int time=0;
  if(A=<C&&C<B)time=min(D,B)-C;
  else if(C=<A&&A<D) time=min(D,B)-A;
    
  cout<<time<<endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:8: error: expected primary-expression before '<' token
   11 |   if(A=<C&&C<B)time=min(D,B)-C;
      |        ^
a.cc:12:13: error: expected primary-expression before '<' token
   12 |   else if(C=<A&&A<D) time=min(D,B)-A;
      |             ^
Language: C++

#include<stdio.h>
int main()
{
int A,B,C,D,Z;
scanf("%d %d %d %d",&A,&B,&C,&D);
   if(A<C)
   {
   		if(B>D)
    	{
    	Z=D-C;
    			printf("%d\n",Z);
    		}
   		}
   		else
		   {
		   		Z=B-C;
		   		if(Z>0)
				   {
				   		printf("%d\n",Z);
				   }
				else
				{
					printf("0\n");
				}
		   }
   	}
   else
   {
   		if(D>B)
   		{
   			Z=D-C;
   			if(Z>0)
   			{
   				printf("%d\n",Z);
			}
			else
			{
				printf("0\n");
			}
		}
		else
		{
			Z=B-A;
			if(Z>0)
			{
				printf("%d\n",Z);
			}
			else
			{
				printf("0\n");
			}
		}
	}
	return 0;
}


Compiler output:
a.cc:27:4: error: expected unqualified-id before 'else'
   27 |    else
      |    ^~~~
a.cc:54:9: error: expected unqualified-id before 'return'
   54 |         return 0;
      |         ^~~~~~
a.cc:55:1: error: expected declaration before '}' token
   55 | }
      | ^
Language: C++

#include<stdio.h>
int main()
{
int A,B,C,D,Z;
while(scanf("%d %d %d %d",&A,&B,&C,&D)!=EOF)
 {
 if(0<=A&B>A&B<=100&0<=C&D>C&D<=100)
  {
   if(A<C)
   {
   if(B>D)
    {
    	Z=D-C;
    printf("%d\n",Z);
    }
    else
   {
   Z=B-C;
   if(Z>0){
   printf("%d\n);
	}
	else
	{
		printf("0\n");
	}
   }
   }
   else
   {
      if(D>B)
    {
    	Z=D-C;
    printf("%d\n",Z);
    }
    else
   {
   Z=D-A;
   if(Z>0)
   {
   printf("%d\n",Z);
   }
   else
   {
   	printf("0\n");
   }
   }
   }
  }
 }
return 0;
}

Compiler output:
a.cc:20:11: warning: missing terminating " character
   20 |    printf("%d\n);
      |           ^
a.cc:20:11: error: missing terminating " character
   20 |    printf("%d\n);
      |           ^~~~~~~
a.cc: In function 'int main()':
a.cc:21:9: error: expected primary-expression before '}' token
   21 |         }
      |         ^
Language: C++

#include<stdio.h>
int main()
{
int A,B,C,D,E,F,Z;
while(scanf("%d %d %d %d",&A,&B,&C,&D)!=EOF)
 {
 if(0<=A&B>A&B<=100&0<=C&D>C&D<=100)
  {
   E=D+C;
   F=A+B;
   if(A<C)
   {
   if(F>E)
    {
    printf("%d\n",D);
    }
    else
   {
   Z=B-C;
   if(Z>0){
   printf("%d\n",Z);
	}
	else
	{
		printf("0\n")
	}
   }
   }
   else{
   {
      if(E>F)
    {
    printf("%d\n",B);
    }
    else
   {
   Z=D-A;
   if(Z>0)
   {
   printf("%d\n",Z);
   }
   else
   {
   	printf("0\n")
   }
   }
   }
   }
  }
 }
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:25:30: error: expected ';' before '}' token
   25 |                 printf("0\n")
      |                              ^
      |                              ;
   26 |         }
      |         ~                     
a.cc:44:22: error: expected ';' before '}' token
   44 |         printf("0\n")
      |                      ^
      |                      ;
   45 |    }
      |    ~
Language: C++

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


int main() {
  int A, B, C, D;
  cout << A << B << C << D;
  int t=min(B,D)-max(A, C);
  if (t>=0) cout << t <<endl;
  else cout << o << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:16: error: 'o' was not declared in this scope
   10 |   else cout << o << endl;
      |                ^
Language: C++

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

#define Max(a,b) max({a,b})
#define Min(a,b) min({a,b})
#define rep(i,m,n) for(int (i)=(m);(i)<(int)(n);(i)++)
#define len(n) n.size()
#define print(n) cout << (n) << endl;


// s.substr(i,n)

typedef long long ll;

using namespace std;

//char a = 65;
long long int inf = 1000000007;
int n,m,a,b,c,d,cou,co;
long long int lla,llb,llc;
double d,k;
const ll LINF = 1e18;
char num = 65;
string s,t;
int lis[20];
/*
int binary(int bina){
    int ans = 0;
    for (int i = 0; bina>0 ; i++)
    {
        ans = ans+(bina%2)*pow(10,i);
        bina = bina/2;
    }
    return ans;
}
*/

int main(){
    
    cin >> a >> b >> c >> d;

    print(max(0,min(b,d)-max(a,c)))

    return 0;
}

Compiler output:
a.cc:21:8: error: conflicting declaration 'double d'
   21 | double d,k;
      |        ^
a.cc:19:15: note: previous declaration as 'int d'
   19 | int n,m,a,b,c,d,cou,co;
      |               ^
Language: C++

using namespace std;
int main() {
	int time[100] = { 0 };

	int A, B, C, D;
	int cnt=0;

	cin >> A >> B >> C >> D;

	for (int i = A; i < B; i++)
	{
		time[i] = 1;
	}
	for (int i = C; i < D; i++)
	{
		if (time[i] != 0)
			cnt++;
	}

	cout << cnt << endl;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: 'cin' was not declared in this scope
    8 |         cin >> A >> B >> C >> D;
      |         ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | using namespace std;
a.cc:20:9: error: 'cout' was not declared in this scope
   20 |         cout << cnt << endl;
      |         ^~~~
a.cc:20:9: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:20:24: error: 'endl' was not declared in this scope
   20 |         cout << cnt << endl;
      |                        ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | using namespace std;
Language: C++

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


int main(){
　int a, b, c, d;
  cin >> a >> b >> c >> d;

  if(b >= c){
    cout << b - c << endl;
  }
  else{
    cout << 0 << endl;
  }
}

Compiler output:
a.cc:10:1: error: extended character 　 is not valid in an identifier
   10 | 　int a, b, c, d;
      | ^
a.cc: In function 'int main()':
a.cc:10:1: error: '\U00003000int' was not declared in this scope
   10 | 　int a, b, c, d;
      | ^~~~~
a.cc:11:10: error: 'a' was not declared in this scope
   11 |   cin >> a >> b >> c >> d;
      |          ^
a.cc:11:15: error: 'b' was not declared in this scope
   11 |   cin >> a >> b >> c >> d;
      |               ^
a.cc:11:20: error: 'c' was not declared in this scope
   11 |   cin >> a >> b >> c >> d;
      |                    ^
a.cc:11:25: error: 'd' was not declared in this scope
   11 |   cin >> a >> b >> c >> d;
      |                         ^
Language: C++

#include<stdio.h>
int main(){
int a,b,c,d,x[100]={0},i,ans=0;
  scanf("%d%d%d%d",&a,&b,&c,&d);
  for(i=a;i<b;i++)x[i]++;
  for(i=c;i<d;i++)x[i]++;
  for(i=0;i<100;i++)if(x[i]==2)ans++;
  printf("%d"ans);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:10: error: unable to find string literal operator 'operator""ans' with 'const char [3]', 'long unsigned int' arguments
    8 |   printf("%d"ans);
      |          ^~~~~~~
Language: C++

open System
open System.Collections.Generic
open System.Linq
open System

// Following contents are my library. The Main processes are on the bottom of this code.

let puts = Console.WriteLine : 'a -> unit
let put = Console.Write : 'a -> unit
let Read() = Console.ReadLine()
let Reads () = Console.ReadLine().Split()
let ReadInt () = Read() |> int
let ReadDouble () = Reads() |> (fun x -> x.[0], x.[1])
let ReadTriple () = Reads() |> (fun x -> x.[0], x.[1], x.[2])
let ReadQuadruple () = Reads() |> (fun x -> x.[0], x.[1], x.[2], x.[3])
let FuncDouble f1 f2 (t1, t2) = (f1 t1, f2 t2)
let FuncTriple f1 f2 f3 (t1, t2, t3) = (f1 t1, f2 t2, f3 t3)
let FuncQuadruple f1 f2 f3 f4 (t1, t2, t3, t4) = (f1 t1, f2 t2, f3 t3, f4 t4)

let ReadIntQuadruple () = ReadQuadruple() |> FuncQuadruple int int int int
let ReadIntTriple () = ReadTriple () |> FuncTriple int int int
let ReadIntDouble () = ReadDouble () |> FuncDouble int int
let ensmallen l = l % 1000000007L
let manhattan x y = abs (fst x - fst y) + abs (snd x - snd y)
let sayYESNO b = if b then puts "YES" else puts "NO"


// The main contents of this submission are below this line.

let a, b, c, d = ReadIntQuadruple()
let l = min b d - max a c
if l <= 0 then puts 0 else puts l


Compiler output:
a.cc:8:32: warning: missing terminating ' character
    8 | let puts = Console.WriteLine : 'a -> unit
      |                                ^
a.cc:8:32: error: missing terminating ' character
    8 | let puts = Console.WriteLine : 'a -> unit
      |                                ^~~~~~~~~~
a.cc:9:27: warning: missing terminating ' character
    9 | let put = Console.Write : 'a -> unit
      |                           ^
a.cc:9:27: error: missing terminating ' character
    9 | let put = Console.Write : 'a -> unit
      |                           ^~~~~~~~~~
a.cc:1:1: error: 'open' does not name a type
    1 | open System
      | ^~~~
Language: C++

#include <bits/stdc++.h>

#define o(output) cout << output << endl
#define priolity_queue pq
#define push p
#define top t

using namespace std;

string s;
int a,b,c,d;
char A,B;
map<char,int> mp;

int main(){
  cin>>a>> b>>c>>d;
  o(max(a,c)-min(b,d));
  

Compiler output:
a.cc: In function 'int main()':
a.cc:17:24: error: expected '}' at end of input
   17 |   o(max(a,c)-min(b,d));
      |                        ^
a.cc:15:11: note: to match this '{'
   15 | int main(){
      |           ^
Language: C

#include <stdio.h>
int main(void){
  int a,b,c,d;
  int first,end;
  scanf("%d",&a);
  scanf("%d",&b);
  scanf("%d",&c);
  scanf("%d",&d);
  if(a>c){
    first=a;
  }else{
    first=c;
  }
  if(b>d){
    end=d
  }else{
    end=b;
  }
  if(end>first){
    printf("%d\n",end-first);
  }else{
    printf("0\n");
  }
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:15:10: error: expected ';' before '}' token
   15 |     end=d
      |          ^
      |          ;
   16 |   }else{
      |   ~
Language: C++

#include <iostream>
#include <string>
using namespace std;
int main(int argc, const char * argv[]) {
    int A,B,C,D;
    cin>>A>>B>>C>>D;
    int robot[101];
    memset(robot, 0, sizeof(robot));
    for(int alice=A;alice<=B;++alice){
        ++robot[alice];
    }
    for(int Bob=C;Bob<=D;++Bob){
        ++robot[Bob];
    }
    int sum=0;
    for(int i=0;i<=101;++i){
        if(robot[i]==2)++sum;
    }
    cout<<(sum-1)<<endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main(int, const char**)':
a.cc:8:5: error: 'memset' was not declared in this scope
    8 |     memset(robot, 0, sizeof(robot));
      |     ^~~~~~
a.cc:2:1: note: 'memset' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    1 | #include <iostream>
  +++ |+#include <cstring>
    2 | #include <string>
Language: C++

#include <iostream>
using namespace std;
int main(int argc, const char * argv[]) {
    int A,B,C,D;
    cin>>A>>B>>C>>D;
    int robot[101];
    memset(robot, 0, sizeof(robot));
    for(int alice=A;alice<=B;++alice){
        ++robot[alice];
    }
    for(int Bob=C;Bob<=D;++Bob){
        ++robot[Bob];
    }
    int sum=0;
    for(int i=0;i<=101;++i){
        if(robot[i]==2)++sum;
    }
    cout<<(sum-1)<<endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main(int, const char**)':
a.cc:7:5: error: 'memset' was not declared in this scope
    7 |     memset(robot, 0, sizeof(robot));
      |     ^~~~~~
a.cc:2:1: note: 'memset' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    1 | #include <iostream>
  +++ |+#include <cstring>
    2 | using namespace std;
Language: C++

>#include<iostrem>
>#include<string>
>#include<algorithm>
>using namespace std;
>int main(){
>	int a,b,c,d;
>	cin>>a>>b>>c>>d;
>	if(b==c){
>		cout<<b<<endl;
>	}
>	else if(c>b){
>		cout<<c-b<<endl;
>	}
>	
>	else cout<<0<<endl;
>	
>}

Compiler output:
a.cc:1:2: error: stray '#' in program
    1 | >#include<iostrem>
      |  ^
a.cc:2:2: error: stray '#' in program
    2 | >#include<string>
      |  ^
a.cc:3:2: error: stray '#' in program
    3 | >#include<algorithm>
      |  ^
a.cc:1:1: error: expected unqualified-id before '>' token
    1 | >#include<iostrem>
      | ^
a.cc:5:1: error: expected unqualified-id before '>' token
    5 | >int main(){
      | ^
Language: C++

#include <bits/stdc++.h>

using namespace std;

#define rep(i, n) for(int i = 0; i < (int)(n); ++i)
#define repr(i, n) for(int i = n;i >= 0; --i)
#define all(x) (x).begin(),(x).end()
#define PI 3.141592653589793
#define MOD 1000000007

typedef long long ll;

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

    int a,b,c,d;
    cin >> a >> b >> c >> d;

    if(a <= c && c <= b){
        else if(b <= c) cout << abs(c - b) << endl;
        else cout << d - c << endl;
    }
    else cout << 0 << endl;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:21:9: error: expected '}' before 'else'
   21 |         else if(b <= c) cout << abs(c - b) << endl;
      |         ^~~~
a.cc:20:25: note: to match this '{'
   20 |     if(a <= c && c <= b){
      |                         ^
a.cc: At global scope:
a.cc:24:5: error: expected unqualified-id before 'else'
   24 |     else cout << 0 << endl;
      |     ^~~~
a.cc:26:9: error: expected unqualified-id before 'return'
   26 |         return 0;
      |         ^~~~~~
a.cc:27:1: error: expected declaration before '}' token
   27 | }
      | ^
Language: Java

Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int d = sc.nextInt();
		int x = 0,y = 0;
		if(a > c) {
			y = a;
			a = c;
			c = y;
			y = b;
			b = d;
			y = d;
		}
		if(b < c) {
			System.out.println(x);
		}else if(b < d ){
			x = (b - c);
			System.out.println(x);
		}else if(b >= d && a < c) {
			x = (d - c);
			System.out.println(x);
		}
	}
}



Compiler output:
Main.java:1: error: unnamed classes are a preview feature and are disabled by default.
Scanner sc = new Scanner(System.in);
^
  (use --enable-preview to enable unnamed classes)
Main.java:7: error: class, interface, enum, or record expected
		if(a > c) {
		^
Main.java:9: error: class, interface, enum, or record expected
			a = c;
			^
Main.java:10: error: class, interface, enum, or record expected
			c = y;
			^
Main.java:11: error: class, interface, enum, or record expected
			y = b;
			^
Main.java:12: error: class, interface, enum, or record expected
			b = d;
			^
Main.java:13: error: class, interface, enum, or record expected
			y = d;
			^
Main.java:14: error: class, interface, enum, or record expected
		}
		^
Main.java:17: error: class, interface, enum, or record expected
		}else if(b < d ){
		^
Main.java:19: error: class, interface, enum, or record expected
			System.out.println(x);
			^
Main.java:20: error: class, interface, enum, or record expected
		}else if(b >= d && a < c) {
		^
Main.java:22: error: class, interface, enum, or record expected
			System.out.println(x);
			^
Main.java:23: error: class, interface, enum, or record expected
		}
		^
13 errors
Language: C++

#include <iostream>
#include <string>
#include <algorithm>
#include <set>
#define REP(i, n) for(int i = 0; i < (int)(n); i++)
#define FOR(i, k, n) for(int i = (k); i < (int)(n); i++)
using namespace std;
int main(){
    int A, B, C, D;
    cin >> A >> B >> C >> D;
    int X[101] = {0};
    int cnt = 0;
    for(int i = A; i < B; i++){
        X[i]++;
    }
    //for(int i = 0; i < 100; i++)
        cout << X[i] << " ";
    
    for(int i = C; i < D; i++){
        X[i]++;
    }
    //cout << endl;
    //for(int i = 0; i < 100; i++)
    //   cout << X[i] << " ";
    
    for(int i = 0; i <= 100; i++){
        if(X[i] == 2)
            cnt++;
    }
    cout << cnt << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:19: error: 'i' was not declared in this scope
   17 |         cout << X[i] << " ";
      |                   ^
Language: Java

import java.util.*;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
  int a = sc.nextInt();
  int b = sc.nextInt();
  int c = sc.nextInt();
  int d = sc.nextInt();
  if(a >= d || b =< c)System.out.println("0");
  else if(a <= c && d <= b)System.out.println(d-c);
  else if(c <= a && b <= d)System.out.println(b-a);
  else if(a <= c && c <= b && b <= d)System.out.println(b-c);
  else if(b <= a && a <= d && d <= c)System.out.println(d-a);
}}

Compiler output:
Main.java:9: error: > or ',' expected
  if(a >= d || b =< c)System.out.println("0");
                     ^
1 error
Language: C++

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

int main(){
	int A, B, C, D;
	cin >> A >> B >> C >> D;
	ans = min(B,D) - max(A,C);
	if(ans>0) cout << ans;
	else cout << 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
    8 |         ans = min(B,D) - max(A,C);
      |         ^~~
      |         abs
Language: C++

#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
#define INF (1<<30)
#define INFLL (1ll<<60)
typedef pair<ll, ll> P;
#define MOD (1000000007ll)
#define l_ength size

int main(void){
	int a,b,c,d,cnt[110],ans=0;
	fill(cnt,cnt+110,0);
	cin >> a >> b >> c >> d;
	cnt[a]++;
	cnt[b]--;
	cnt[c]++;
	cnt[d]--;
	for(i=1; i<=100; ++i){
		cnt[i] += cnt[i-1];
	}
	for(i=0; i<=100; ++i){
		if(cnt[i] == 2){
			ans++;
		}
	}
	cout << ans << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:13: error: 'i' was not declared in this scope
   18 |         for(i=1; i<=100; ++i){
      |             ^
a.cc:21:13: error: 'i' was not declared in this scope
   21 |         for(i=0; i<=100; ++i){
      |             ^
Language: C++

#include<iostream>
int A,B,C,D;main(){std::cin>>A>>B>>C>>D;std::cout<<max(0,min(B,D)-max(A,C));}

Compiler output:
a.cc:2:13: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    2 | int A,B,C,D;main(){std::cin>>A>>B>>C>>D;std::cout<<max(0,min(B,D)-max(A,C));}
      |             ^~~~
a.cc: In function 'int main()':
a.cc:2:58: error: 'min' was not declared in this scope; did you mean 'std::min'?
    2 | int A,B,C,D;main(){std::cin>>A>>B>>C>>D;std::cout<<max(0,min(B,D)-max(A,C));}
      |                                                          ^~~
      |                                                          std::min
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:281:5: note: 'std::min' declared here
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
a.cc:2:67: error: 'max' was not declared in this scope; did you mean 'std::max'?
    2 | int A,B,C,D;main(){std::cin>>A>>B>>C>>D;std::cout<<max(0,min(B,D)-max(A,C));}
      |                                                                   ^~~
      |                                                                   std::max
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: 'std::max' declared here
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
a.cc:2:52: error: 'max' was not declared in this scope; did you mean 'std::max'?
    2 | int A,B,C,D;main(){std::cin>>A>>B>>C>>D;std::cout<<max(0,min(B,D)-max(A,C));}
      |                                                    ^~~
      |                                                    std::max
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: 'std::max' declared here
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
Language: C

#include<cstdio>
int A,B,C,D,a;main(){scanf("%d%d%d%d",&A,&B,&C,&D);ans=(B<D?B:D)-(A<C?C:A);printf("%d",a<0?0:a);}

Compiler output:
main.c:1:9: fatal error: cstdio: No such file or directory
    1 | #include<cstdio>
      |         ^~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
using namespace std;
int main(){
int a,b,c,d,o,k;
cin>>a>>b>>c>>d;
o=max(a,c);
k=min(b,d);
if(k-o>0)
cout<<k-o;
else
cout<<0;

Compiler output:
a.cc: In function 'int main()':
a.cc:11:9: error: expected '}' at end of input
   11 | cout<<0;
      |         ^
a.cc:3:11: note: to match this '{'
    3 | int main(){
      |           ^
Language: C++

#include<iostream>
using namespace std;

int main() {
	int A, B, C, D,T;
	cin >> A >> B >> C >> D;
	if (C <= B) {
		if (D >= B&&C>=A) T = B - C;
               if(D>=B&&C<=A) T=B-A
		if (D<=B&&C>=A) T = D - C;
		if (D <=B&&C <=A) T = D - A;
		if (D <= A) T = 0;
		}
	else T = 0;
	cout << T;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:36: error: expected ';' before 'if'
    9 |                if(D>=B&&C<=A) T=B-A
      |                                    ^
      |                                    ;
   10 |                 if (D<=B&&C>=A) T = D - C;
      |                 ~~
Language: C++

 #include<iostream>   
using namespace std;   
int main()
{  
    int a,b,c,d;
	cin>>a>>b>>c>>d;
	if(a<b&&c<d)
	{
	int t;
	if(a<c)
		{
			if(b<d)	 t=b-c;
			else  t=d-c;
		}
	else
		{
			if(b<d) t=b-a;
			else  t=b-a;
		}
	}
	if(t<0)  t=0;
	cout<<t<<endl;
    return 0;  
}  

Compiler output:
a.cc: In function 'int main()':
a.cc:21:12: error: 't' was not declared in this scope
   21 |         if(t<0)  t=0;
      |            ^
a.cc:22:15: error: 't' was not declared in this scope
   22 |         cout<<t<<endl;
      |               ^
Language: C++

#include <iostream>
int main() {
	int a,b,c,d;
	std::cin >> a >> b >> c >> d;
	b - a - c > 0 ? std::cout << b - a - c << endl : std::cout << "0" << endl; 
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:51: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    5 |         b - a - c > 0 ? std::cout << b - a - c << endl : std::cout << "0" << endl;
      |                                                   ^~~~
      |                                                   std::endl
In file included from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C

#include<stdio.h>
int main(){
int a,b,c,d,m,n;
scanf("%d %d %d %d",&a,&b,&c,&d);
if(judge(a)&&judge(b)&&judge(c)&&judge(d))
{compare(a,b);
compare(c,d);
if(b>c&&b<d&&a<c)
    printf("%d",b-c);
if(b<=c||a>=d)
    printf("0");
if(b>=d&&a<=c)
    printf("%d",d-c);
if(a>c&&a<d&&b>d)
    printf("%d",d-a);

if(a>c&&b<d)
    printf("%d",b-a);
    }
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:4: error: implicit declaration of function 'judge' [-Wimplicit-function-declaration]
    5 | if(judge(a)&&judge(b)&&judge(c)&&judge(d))
      |    ^~~~~
main.c:6:2: error: implicit declaration of function 'compare' [-Wimplicit-function-declaration]
    6 | {compare(a,b);
      |  ^~~~~~~
Language: C

#include<stdio.h>
int main(){
int a,b,c,d,m,n;
scanf("%d %d %d %d",&a,&b,&c,&d);
if(judge(a)&&judge(b)&&judge(c)&&judge(d))
{compare(a,b);
compare(c,d);
if(b>c&&b<d)
    printf("%d",b-c);
if(b<=c)
    printf("0");
if(b>d)
    printf("%d",d-c);
    }
    return 0;
}
int judge(int q)
  {
   if(0<q&&q<100) return 1;
   else return 0;
  }

Compiler output:
main.c: In function 'main':
main.c:5:4: error: implicit declaration of function 'judge' [-Wimplicit-function-declaration]
    5 | if(judge(a)&&judge(b)&&judge(c)&&judge(d))
      |    ^~~~~
main.c:6:2: error: implicit declaration of function 'compare' [-Wimplicit-function-declaration]
    6 | {compare(a,b);
      |  ^~~~~~~
Language: C++

#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <algorithm>

using namespace std;

#define N 108

int a,b,c,d,time = 0;
int flag[N];

int main()
{
	scanf("%d%d%d%d", &a, &b, &c, &d);
	for (int i = 0; i < N; i++)
		flag[i] = 0;
	for (int i = a; i < b; i++)
		flag[i] ++;
	for (int i = c; i < d; i++)
		if (flag[i] != 0)
			time++;
	printf("%d\n", time);
	return 0;
}

Compiler output:
a.cc:10:13: error: 'int time' redeclared as different kind of entity
   10 | int a,b,c,d,time = 0;
      |             ^~~~
In file included from /usr/include/pthread.h:23,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/gthr-default.h:35,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/gthr.h:157,
                 from /usr/include/c++/14/ext/atomicity.h:35,
                 from /usr/include/c++/14/bits/ios_base.h:39,
                 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/time.h:76:15: note: previous declaration 'time_t time(time_t*)'
   76 | extern time_t time (time_t *__timer) __THROW;
      |               ^~~~
a.cc: In function 'int main()':
a.cc:22:25: warning: ISO C++ forbids incrementing a pointer of type 'time_t (*)(time_t*) noexcept' {aka 'long int (*)(long int*) noexcept'} [-Wpointer-arith]
   22 |                         time++;
      |                         ^~~~
a.cc:22:29: error: lvalue required as increment operand
   22 |                         time++;
      |                             ^~
Language: C

#include<stdio.h>
int main(void)
{
	int a, b, c, d;
	scanf("%d %d %d %d", &a, &b, &c, &d);
	if ((b < c)&&(d<a)printf("0");
	else if (b > d)printf("%d", d - c);
	else if(b>c)printf("%d", b - c);
	else if (d > b)printf(b - a);
	else printf(b - c);
}

Compiler output:
main.c: In function 'main':
main.c:6:27: error: expected ')' before 'printf'
    6 |         if ((b < c)&&(d<a)printf("0");
      |            ~              ^~~~~~
      |                           )
main.c:11:1: error: expected expression before '}' token
   11 | }
      | ^
Language: C

#include<stdio,h>
int main()
{
	int A, B, C, D;
	scanf("%d", A);
	scanf("%d", B);
	scanf("%d", C);
	scanf("%d", D);
	if (B < C || D < A)
		printf("%d",0);
	else
	{
		if (A < C)
		{
			if (B < D)
			{
				printf("%d", B - C);
			}
			else
			{
				printf("%d", D - C);
			}
		}
		else 
		{
			if (B < D)
			{
				printf("%d", B - A);
			}
			else
			{
				printf("%d", D - A);
			}
		}
	}
	return 0;
}

Compiler output:
main.c:1:9: fatal error: stdio,h: No such file or directory
    1 | #include<stdio,h>
      |         ^~~~~~~~~
compilation terminated.
Language: C

#include<stdio.h>
int main()
{
        int a[4];
        int i;
       for(i=0;i<4;i++)
           scanf("%d",a[i]);
      if(a[1]<=a[2])||a[3]<=a[0])
             printf("%d",0);
      else{
       for(i=0;i<4;i++)
          for(int j=0;j<3;j++)
                if(a[j]>a[j+1])
                   {
                         int temp=a[j];
                        a[j]=a[j+1],a[j+1]=temp;
                  }
         printf("%d",a[3]-a[2]);
}
   return 0;

}

Compiler output:
main.c: In function 'main':
main.c:8:21: error: expected expression before '||' token
    8 |       if(a[1]<=a[2])||a[3]<=a[0])
      |                     ^~
main.c:8:33: error: expected statement before ')' token
    8 |       if(a[1]<=a[2])||a[3]<=a[0])
      |                                 ^
main.c:10:7: error: 'else' without a previous 'if'
   10 |       else{
      |       ^~~~
Language: C++

#include<stdio.h>

int main(void){
  int a,b,c,d,t,i,s=0;

  scanf("%d %d %d %d",&a,&b,&c,&d);

  if(a>c){
    t=a;a=c;c=t;
    t=b;b=d;d=t;
  }

  for(i=a;i<b;i++){
    if(i>=c&&i<d)
      s++;
  }

  printf("%d\n",s);
}

return 0;
}

Compiler output:
a.cc:21:1: error: expected unqualified-id before 'return'
   21 | return 0;
      | ^~~~~~
a.cc:22:1: error: expected declaration before '}' token
   22 | }
      | ^
Language: C++

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

#define rep(i,n) FOR(i,0,n)
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define ROF(i,a,b) for(int i=(a);i>(b);i--)
#define all(a) (a).begin(),(a).end()
#define UNIQUE(v) v.erase(unique(all(v)),v.end())
typedef vector<int> vi;
typedef vector<vi> vii;
typedef vector<string> vs;
typedef pair<int,int> pii;
typedef long long ll;

main(){
  int a,b,c,d; cin >> a >> b >> c >> d;
  cout << max(0,min(b,d)-min(a,c)) << endl;
}

Compiler output:
a.cc:1:2: error: stray '#' in program
    1 | v#include<bits/stdc++.h>
      |  ^
a.cc:1:1: error: 'v' does not name a type
    1 | v#include<bits/stdc++.h>
      | ^
a.cc:9:9: error: 'vector' does not name a type
    9 | typedef vector<int> vi;
      |         ^~~~~~
a.cc:10:9: error: 'vector' does not name a type
   10 | typedef vector<vi> vii;
      |         ^~~~~~
a.cc:11:9: error: 'vector' does not name a type
   11 | typedef vector<string> vs;
      |         ^~~~~~
a.cc:12:9: error: 'pair' does not name a type
   12 | typedef pair<int,int> pii;
      |         ^~~~
a.cc:15:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   15 | main(){
      | ^~~~
a.cc: In function 'int main()':
a.cc:16:16: error: 'cin' was not declared in this scope
   16 |   int a,b,c,d; cin >> a >> b >> c >> d;
      |                ^~~
a.cc:17:3: error: 'cout' was not declared in this scope
   17 |   cout << max(0,min(b,d)-min(a,c)) << endl;
      |   ^~~~
a.cc:17:17: error: 'min' was not declared in this scope; did you mean 'main'?
   17 |   cout << max(0,min(b,d)-min(a,c)) << endl;
      |                 ^~~
      |                 main
a.cc:17:11: error: 'max' was not declared in this scope
   17 |   cout << max(0,min(b,d)-min(a,c)) << endl;
      |           ^~~
a.cc:17:39: error: 'endl' was not declared in this scope
   17 |   cout << max(0,min(b,d)-min(a,c)) << endl;
      |                                       ^~~~
Language: C++

#include <iostream>
#include<vector>
#include<algorithm>
#include<cstdio>
#include<cstdlib>
#include<string>
#include<sstream>
#include<cmath>
#include<numeric>
#include<map>
#include<stack>
#include<queue>
using namespace std;

int main() {

  int a, b, c, d;
  cin >> a >> b >> c >> d;
  vector<int> x(101, 0);
  for(int i=a; <=b; i++){
    x[i] = 1;
  }
  int cnt = 0;
  for(int i=c; i<=d; i++){
    if( x[i] == 1 ) cnt++;
  }
  cout << cnt << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:20:16: error: expected primary-expression before '<=' token
   20 |   for(int i=a; <=b; i++){
      |                ^~
Language: C++

#include <iostream>
#include <sstream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <ctime>
#include <cstring>
#include <string>
#include <vector>
#include <stack>
#include <queue>
#include <deque>
#include <map>
#include <set>
#include <bitset>
#include <numeric>
#include <utility>
#include <iomanip>
#include <algorithm>
#include <functional>
using namespace std;

#define COUT(x) cout << #x << " = " << (x) << " (L" << __LINE__ << ")" << endl
#define EACH(i, s) for (__typeof__((s).begin()) i = (s).begin(); i != (s).end(); ++i)

template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
template<class T1, class T2> ostream& operator << (ostream &s, pair<T1,T2> P)
{ return s << '<' << P.first << ", " << P.second << '>'; }
template<class T> ostream& operator << (ostream &s, vector<T> P)
{ for (int i = 0; i < P.size(); ++i) { if (i > 0) { s << " "; } s << P[i]; } return s; }
template<class T> ostream& operator << (ostream &s, vector<vector<T> > P)
{ for (int i = 0; i < P.size(); ++i) { s << endl << P[i]; } return s << endl; }
template<class T1, class T2> ostream& operator << (ostream &s, map<T1,T2> P)
{ EACH(it, P) { s << "<" << it->first << "->" << it->second << "> "; } return s << endl; }


int a, b, c, d;
int main() {
    cin >> a >> b >> c >> d;
    cout << max(0, )min(b, d) - max(a, c)) << endl;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:41:20: error: expected primary-expression before ')' token
   41 |     cout << max(0, )min(b, d) - max(a, c)) << endl;
      |                    ^
Language: C++

#include<iostream>
using namespace std;
int main(){
  int a,b,c,d;
  int o,p,q,r;
  int ans=0;
  cin>>a>>b>>c>>d;
  o=a;
  p=b;
  q=c;
  r=d;
  if(a<c){
    a+=c;
    b-=a;
    d-=c;
    if(b>d){
      ans=d;
    }else{
      ans=b;
    }
  }
  a=o;
  b=p;
  c=q;
  d=r
  if(a>c){
    c+=a;
    b-=a;
    d-=c;
    if(b>d){
      ans=d;
    }else{
      ans=b;
    }
  }
  a=o;
  b=p;
  c=q;
  d=r;
  if(a==c){
    b-=a;
    d-=c;
    if(b>d){
      ans=d;
    }else{
      ans=b;
    }
  }
  if(ans<0){
    ans=0;
  }
  cout<<ans<<endl;
  return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:25:6: error: expected ';' before 'if'
   25 |   d=r
      |      ^
      |      ;
   26 |   if(a>c){
      |   ~~
Language: C++

	int a,b,A,B,C,D; 
	scanf("%d%d%d%d",&A,&B,&C,&D);
	{
		if(A<D&&C<B)
		{
			if(A<C){a=C;}
			else{a=A;}
			if(B<D){b=B;}
			else{b=D;}
			printf("%d\n",b-a);
		}
		else
		printf("0\n");
	}
	return 0;
}

Compiler output:
a.cc:2:14: error: expected constructor, destructor, or type conversion before '(' token
    2 |         scanf("%d%d%d%d",&A,&B,&C,&D);
      |              ^
a.cc:3:9: error: expected unqualified-id before '{' token
    3 |         {
      |         ^
a.cc:15:9: error: expected unqualified-id before 'return'
   15 |         return 0;
      |         ^~~~~~
a.cc:16:1: error: expected declaration before '}' token
   16 | }
      | ^
Language: C

#include<stdio.h> #include<math.h> int main()  {  	int a,b,c,d; 	 	scanf("%d%d%d%d",&a,&b,&c,&d);	if(b<c||d<a) 	printf("0"); 	else 		{ 	    if((a==0&&c!=0&&d>b)||(a<c&&b<d)) 		{ 				printf("%d",b-c); 				return 0; 				} 				if((c==0&&a!=0&&d<b)||(a>c&&b>d)) 		{ 			printf("%d",d-a); 			return 0; 			} 				if(a>c&&b<d) 	{ 				printf("%d",b-a); 			return 0; 		} 			if(c>a&&d<b) 			{ printf("%d",d-c); 				return 0; 				} 		if(a==0&&c==0) 			{ 			if(b<d) 			printf("%d",b); 				else 			printf("%d",d); 		return 0; 		} 			if(a==c&&b==d) 			{ 			printf("%d",b-a); 			return 0; 		} 		if(b==d) 		{ 			if(a<c) 			printf("%d",d-c); 			else 			printf("%d",b-a); 				return 0; 		} 									if(a==c) 		{ 	if(b>d) printf("%d",d-c); 					else 	printf("%d",b-a); 				return 0; 		} 			} 	return 0; }

Compiler output:
main.c:1:19: warning: extra tokens at end of #include directive
    1 | #include<stdio.h> #include<math.h> int main()  {        int a,b,c,d;            scanf("%d%d%d%d",&a,&b,&c,&d);  if(b<c||d<a)    printf("0");    else            {           if((a==0&&c!=0&&d>b)||(a<c&&b<d))           {                               printf("%d",b-c);                               return 0;                               }                               if((c==0&&a!=0&&d<b)||(a>c&&b>d))               {                       printf("%d",d-a);                       return 0;                       }                               if(a>c&&b<d)    {                               printf("%d",b-a);                       return 0;               }                       if(c>a&&d<b)                    { printf("%d",d-c);                             return 0;                               }               if(a==0&&c==0)                  {                       if(b<d)                         printf("%d",b);                                 else                    printf("%d",d);                 return 0;               }                       if(a==c&&b==d)                  {                       printf("%d",b-a);                       return 0;               }               if(b==d)                {                       if(a<c)                         printf("%d",d-c);                       else                    printf("%d",b-a);                               return 0;               }                                                                       if(a==c)                {       if(b>d) printf("%d",d-c);                                       else    printf("%d",b-a);                               return 0;               }                       }       return 0; }
      |                   ^
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C

#include<stdio.h>
int main()
{
	int a,b,c,d;
	while(scanf("%d %d %d %d",&a,&b,&c,&d)!=EOF)
	if(c>=b||a>=d)
	printf("0");
	if(c<=b&&c>a&&d<=b)
	printf("%d",d-c);
	if(c<b&&c>a&&d>b)
	printf("%d",b-c);
	if(a<=d&&a>c&&b<=d)
	printf("%d",b-a);
	if(a<d&&a>c&&b>d)
	printf("%d",d-a);
	if(a=c&&b=d)
	printf("%d",&b-a);
	return 0;
	
}

Compiler output:
main.c: In function 'main':
main.c:16:18: error: lvalue required as left operand of assignment
   16 |         if(a=c&&b=d)
      |                  ^
Language: C++

./Main.c: In function ‘main’:
./Main.c:7:8: error: expected expression before ‘int’
if(a!=int(a))
^
./Main.c:9:13: error: expected expression before ‘int’
else if(b!=int(b))
^
./Main.c:11:13: error: expected expression before ‘int’
else if(c!=int(c))
^
./Main.c:13:13: error: expected expression before ‘int’
else if(d!=int(d))
^
./Main.c:5:2: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%lf %lf %lf %lf",&a,&b,&c,&d);
^

Compiler output:
a.cc:1:23: error: extended character ‘ is not valid in an identifier
    1 | ./Main.c: In function ‘main’:
      |                       ^
a.cc:1:23: error: extended character ’ is not valid in an identifier
a.cc:2:49: error: extended character ‘ is not valid in an identifier
    2 | ./Main.c:7:8: error: expected expression before ‘int’
      |                                                 ^
a.cc:2:49: error: extended character ’ is not valid in an identifier
a.cc:5:50: error: extended character ‘ is not valid in an identifier
    5 | ./Main.c:9:13: error: expected expression before ‘int’
      |                                                  ^
a.cc:5:50: error: extended character ’ is not valid in an identifier
a.cc:8:51: error: extended character ‘ is not valid in an identifier
    8 | ./Main.c:11:13: error: expected expression before ‘int’
      |                                                   ^
a.cc:8:51: error: extended character ’ is not valid in an identifier
a.cc:11:51: error: extended character ‘ is not valid in an identifier
   11 | ./Main.c:13:13: error: expected expression before ‘int’
      |                                                   ^
a.cc:11:51: error: extended character ’ is not valid in an identifier
a.cc:14:49: error: extended character ‘ is not valid in an identifier
   14 | ./Main.c:5:2: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
      |                                                 ^
a.cc:14:49: error: extended character ’ is not valid in an identifier
a.cc:1:1: error: expected unqualified-id before '.' token
    1 | ./Main.c: In function ‘main’:
      | ^
a.cc:16:1: error: expected unqualified-id before '^' token
   16 | ^
      | ^
Language: C

#include<stdio.h>
int main(void)
{
	double n,i,m,a,b,c,d,x,y;
	scanf("%lf %lf %lf %lf",&a,&b,&c,&d);
	
	if(a!=int(a))
	return -1;
	else if(b!=int(b))
	return -1;
	else if(c!=int(c))
	return -1;
	else if(d!=int(d))
	return -1;
	

	if(a<0||a>=b||a>100||b<=0||b>100)
	return -1;
 else if(c<0||c>=d||c>100||d<=0||d>100)
	return -1;
	else if(b<c)
	printf("0\n");
	else if(a<=c&&b>=d)
	printf("%lf\n",d-c);
	else if(a>=c&&b<=d)
	printf("%lf\n",b-a);
	else 
	printf("%.0lf\n",b-c);
	return 0;
 } 

Compiler output:
main.c: In function 'main':
main.c:7:15: error: expected expression before 'int'
    7 |         if(a!=int(a))
      |               ^~~
main.c:9:20: error: expected expression before 'int'
    9 |         else if(b!=int(b))
      |                    ^~~
main.c:11:20: error: expected expression before 'int'
   11 |         else if(c!=int(c))
      |                    ^~~
main.c:13:20: error: expected expression before 'int'
   13 |         else if(d!=int(d))
      |                    ^~~
Language: C

#include<stdio.h>
#define max(a,c) ((a)>=(c)?(a):(c))
#define min(b,d) ((b)=<(d)?(b):(d))
int main()
{
	int a,b,c,d,min,max;
	scanf("%d %d %d %d",&a,&b,&c,&d);
	if(a>d&&c>b)
	printf("0\n");
	else
	{
		min=min(b,d);
		max=max(a,c);
		printf("%d\n",min-max);
		}
	return 0;
	}

Compiler output:
main.c: In function 'main':
main.c:3:23: error: expected expression before '<' token
    3 | #define min(b,d) ((b)=<(d)?(b):(d))
      |                       ^
main.c:12:21: note: in expansion of macro 'min'
   12 |                 min=min(b,d);
      |                     ^~~
Language: C

#include<Stdio.h>
int main()
{
	int A,B,C,D,max,min,s;
	scanf("%d%d%d%d",&A,&B,&C,&D);
	min=B<D?B:D;
	max=A>C?A:C;
	s=min-max;
	if(s>0)  printf("%d\n",s);
	else printf("0\n");
}

Compiler output:
main.c:1:9: fatal error: Stdio.h: No such file or directory
    1 | #include<Stdio.h>
      |         ^~~~~~~~~
compilation terminated.
Language: C++

#include <iostream>
using namespace std;
   int n[103];
 
int main(void){
   int a,b,c,d,ans=0;
   cin>>a>>b>>c>>d;
   n[a]=1;
   n[b]=-1;
   n[c]=1;
   n[d]=-1;
    for(int i=0;i<=101;i++){
        if(n[i]>1)ans++;
        n[i+1]+=n[i];
        
    }
    cout<<ans<<endl;
}

Compiler output:
a.cc:4:1: error: extended character   is not valid in an identifier
    4 |  
      | ^
a.cc:4:1: error: '\U000000a0' does not name a type
    4 |  
      | ^
Language: C++

//abc070_b Two Switches


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

int main()
{
int A;
int B
int C;
int D;

	cin >> A;
	cin >> B;
	cin >> C;
	cin >> D;

	if( A < C ) A = C;
	if( B > D ) B = D;
	if( A > B )
		cout << 0 << endl;
	else
		cout << B - A << endl;

	return 0;
}






Compiler output:
a.cc: In function 'int main()':
a.cc:11:1: error: expected initializer before 'int'
   11 | int C;
      | ^~~
a.cc:15:16: error: 'B' was not declared in this scope
   15 |         cin >> B;
      |                ^
a.cc:16:16: error: 'C' was not declared in this scope
   16 |         cin >> C;
      |                ^
Language: C++

//abc070_b Two Switches


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

int main()
{
char A;
char B
char C;
char D;

	cin >> A;
	cin >> B;
	cin >> C;
	cin >> D;

	if( A < C ) A = C;
	if( B > D ) B = D;
	if( A > B )
		cout << 0 << endl;
	else
		cout << B - A << endl;

	return 0;
}






Compiler output:
a.cc: In function 'int main()':
a.cc:11:1: error: expected initializer before 'char'
   11 | char C;
      | ^~~~
a.cc:15:16: error: 'B' was not declared in this scope
   15 |         cin >> B;
      |                ^
a.cc:16:16: error: 'C' was not declared in this scope
   16 |         cin >> C;
      |                ^
Language: C++

/**
  *  @Author: Pranta Sarker
  *
  */

#include<bits/stdc++.h>

using namespace std;

#define fast ios_base::sync_with_stdio(0)
#define bfast cin.tie(0)
#define outs(x) cout << x << " "
#define outn(x) cout << x << "\n"
#define sf scanf
#define pf printf
#define pfn(x , k) printf(k , x)
#define nl puts("")
#define psb push_back
#define mset(c,v) memset(c , v , sizeof c)
#define loop0(n) for(int i=0; i<n; i++)
#define loop1(n) for(int i=1; i<=n; i++)
#define mpair(x , y) make_pair(x , y)
#define all(x) x.begin(), x.end()
#define pi acos(-1.0)
#define psb push_back
#define clr clear()

typedef unsigned long long ull;
typedef long long LL;
typedef vector<int>vii;
typedef vector<LL>vll;
typedef vector<string>vs;
typedef map<int, int>mpii;
typedef map<string, int>mpsi;
typedef map<char, int>mpci;
typedef map<LL, LL>mpll;

const int mod = 1000007;
const int high = 1002;

int main()
{
	fast;
	int A , B , C , D;
	while(cin >> A >> B >> C >> D)
	{
		if(C >= A && C >= B)
		{
			outn(ans);
			continue;
		}

		int start = max(A , C);
		int end = min(B , D);

		if(start > end) outn(0);
		else outn(end - start);
	}

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:49:30: error: 'ans' was not declared in this scope; did you mean 'abs'?
   49 |                         outn(ans);
      |                              ^~~
a.cc:13:25: note: in definition of macro 'outn'
   13 | #define outn(x) cout << x << "\n"
      |                         ^
Language: C++

#include <iostream>
using namespace std;

int main()
{
  int a, b, c, d;
  int count = 0;
  cin >> a >> b >> c >> d;
  for(int i=0;i<=100;i++){
    if(a<=i && i<=b && c<=i && i<=d){
      count++;
    }
  }
  if(count != 0){
    coun--;
  }
  cout << count << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:5: error: 'coun' was not declared in this scope; did you mean 'count'?
   15 |     coun--;
      |     ^~~~
      |     count