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

#include <math.h>

#include <algorithm>  //sort,二分探索,など
#include <array>
#include <bitset>         //固定長bit集合
#include <cmath>          //pow,logなど
#include <complex>        //複素数
#include <deque>          //両端アクセスのキュー
#include <functional>     //sortのgreater
#include <iomanip>        //setprecision(浮動小数点の出力の誤差)
#include <iostream>       //入出力
#include <map>            //map(辞書)s
#include <numeric>        //iota(整数列の生成),gcdとlcm(c++17)
#include <queue>          //キュー
#include <set>            //集合
#include <stack>          //スタック
#include <string>         //文字列
#include <unordered_map>  //イテレータあるけど順序保持しないmap
#include <unordered_set>  //イテレータあるけど順序保持しないset
#include <utility>        //pair
#include <vector>         //可変長配列

using namespace std;
typedef long long ll;

#define rep(i, n) for (ll i = 0; i < (ll)(n); i++)
#define repd(i, n) for (ll i = (ll)(n)-1; i >= 0; i--)
#define for (i, a, b) for (ll i = (a); i <= (b); i++)
#define ford(i, a, b) for (ll i = (a); i >= (b); i--)
#define all(x) (x).begin(), (x).end()  // sortなどの引数を省略したい
#define size(x) ((ll)(x).size())  // sizeをsize_tからllに直しておく
#define max(x) *max_element(ALL(x))
#define MAX(a, b)
#define inf 1000000000000
#define mod 10000007
#define pb push_back
#define mp make_pair
#define F first
#define S second
int main() {
  int a, b, c, d;
  cin >> a >> b >> c >> d;
  int time;
  time = min(b, d) - MAX(a, c);
  if (b < c || d < a) {
    cout << "0" << endl;
  } else if (time < 0) {
    cout << "0" << endl;
  } else {
    cout << time << endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:44:31: error: expected primary-expression before ';' token
   44 |   time = min(b, d) - MAX(a, c);
      |                               ^
Language: C++

#include <math.h>

#include <algorithm>  //sort,二分探索,など
#include <array>
#include <bitset>         //固定長bit集合
#include <cmath>          //pow,logなど
#include <complex>        //複素数
#include <deque>          //両端アクセスのキュー
#include <functional>     //sortのgreater
#include <iomanip>        //setprecision(浮動小数点の出力の誤差)
#include <iostream>       //入出力
#include <map>            //map(辞書)s
#include <numeric>        //iota(整数列の生成),gcdとlcm(c++17)
#include <queue>          //キュー
#include <set>            //集合
#include <stack>          //スタック
#include <string>         //文字列
#include <unordered_map>  //イテレータあるけど順序保持しないmap
#include <unordered_set>  //イテレータあるけど順序保持しないset
#include <utility>        //pair
#include <vector>         //可変長配列

using namespace std;
typedef long long ll;

#define rep(i, n) for (ll i = 0; i < (ll)(n); i++)
#define repd(i, n) for (ll i = (ll)(n)-1; i >= 0; i--)
#define for (i, a, b) for (ll i = (a); i <= (b); i++)
#define ford(i, a, b) for (ll i = (a); i >= (b); i--)
#define all(x) (x).begin(), (x).end()  // sortなどの引数を省略したい
#define size(x) ((ll)(x).size())  // sizeをsize_tからllに直しておく
#define max(x) *max_element(ALL(x))
#define MAX(a, b)
#define inf 1000000000000
#define mod 10000007
#define pb push_back
#define mp make_pair
#define F first
#define S second
int main() {
  int a, b, c, d;
  cin >> a >> b >> c >> d;
  time = min(b, d) - max(a, c);
  if (b < c || d < a) {
    time = 0;
  } if
    (time < 0) { time = 0; }
  cout << time << endl;
  return 0;
}

Compiler output:
a.cc:43:30: error: macro "max" passed 2 arguments, but takes just 1
   43 |   time = min(b, d) - max(a, c);
      |                              ^
a.cc:32:9: note: macro "max" defined here
   32 | #define max(x) *max_element(ALL(x))
      |         ^~~
a.cc: In function 'int main()':
a.cc:43:20: error: invalid operands of types 'const int' and '<unresolved overloaded function type>' to binary 'operator-'
   43 |   time = min(b, d) - max(a, c);
      |          ~~~~~~~~~~^~~~~
a.cc:45:10: error: assignment of function 'time_t time(time_t*)'
   45 |     time = 0;
      |     ~~~~~^~~
a.cc:47:11: error: ordered comparison of pointer with integer zero ('time_t (*)(time_t*) noexcept' {aka 'long int (*)(long int*) noexcept'} and 'int')
   47 |     (time < 0) { time = 0; }
      |      ~~~~~^~~
a.cc:47:23: error: assignment of function 'time_t time(time_t*)'
   47 |     (time < 0) { time = 0; }
      |                  ~~~~~^~~
Language: C++

#include <math.h>
#include <algorithm>  //sort,二分探索,など
#include <array>
#include <bitset>         //固定長bit集合
#include <cmath>          //pow,logなど
#include <complex>        //複素数
#include <deque>          //両端アクセスのキュー
#include <functional>     //sortのgreater
#include <iomanip>        //setprecision(浮動小数点の出力の誤差)
#include <iostream>       //入出力
#include <map>            //map(辞書)s
#include <numeric>        //iota(整数列の生成),gcdとlcm(c++17)
#include <queue>          //キュー
#include <set>            //集合
#include <stack>          //スタック
#include <string>         //文字列
#include <unordered_map>  //イテレータあるけど順序保持しないmap
#include <unordered_set>  //イテレータあるけど順序保持しないset
#include <utility>        //pair
#include <vector>         //可変長配列

using namespace std;
typedef long long ll;

#define rep(i, n) for (ll i = 0; i < (ll)(n); i++)
#define repd(i, n) for (ll i = (ll)(n)-1; i >= 0; i--)
#define for (i, a, b) for (ll i = (a); i <= (b); i++)
#define ford(i, a, b) for (ll i = (a); i >= (b); i--)
#define all(x) (x).begin(), (x).end()  // sortなどの引数を省略したい
#define size(x) ((ll)(x).size())  // sizeをsize_tからllに直しておく
#define max(x) *max_element(ALL(x))
#define MAX(a, b)
#define inf 1000000000000
#define mod 10000007
#define pb push_back
#define mp make_pair
#define F first
#define S second
int main() {
  int a, b, c, d;
  cin >> a >> b >> c >> d;
  int time = 0;
  if (b < c || d < a) {
    time = 0;
  } else {
    time = max(b, d);
    -min(a, c);
  }
  cout << time << endl;
  return 0;
}

Compiler output:
a.cc:46:20: error: macro "max" passed 2 arguments, but takes just 1
   46 |     time = max(b, d);
      |                    ^
a.cc:31:9: note: macro "max" defined here
   31 | #define max(x) *max_element(ALL(x))
      |         ^~~
a.cc: In function 'int main()':
a.cc:46:12: error: cannot resolve overloaded function 'max' based on conversion to type 'int'
   46 |     time = max(b, d);
      |            ^~~
Language: C++

def main():
    A, B, C, D = map(int, input().split())
    if B < C:
        print(0)
    elif D < A:
        print(0)
    else:
       print(min(B, D) - max(A, C)) 
main()

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

#include<iostream>
#include<math.h>
#include<string.h>
#include<vector>
#include<algorithm>
#include<iomanip>
#include<deque>
using namespace std;

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


Compiler output:
a.cc: In function 'int main()':
a.cc:18:25: error: 'ans' was not declared in this scope; did you mean 'abs'?
   18 |                         ans=0;
      |                         ^~~
      |                         abs
a.cc:22:25: error: 'ans' was not declared in this scope; did you mean 'abs'?
   22 |                         ans=min(abs(b-c),ans_max);
      |                         ^~~
      |                         abs
a.cc:29:25: error: 'ans' was not declared in this scope; did you mean 'abs'?
   29 |                         ans=0;
      |                         ^~~
      |                         abs
a.cc:33:25: error: 'ans' was not declared in this scope; did you mean 'abs'?
   33 |                         ans=min(abs(d-a),ans_max);
      |                         ^~~
      |                         abs
a.cc:37:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   37 |         cout << ans << endl;
      |                 ^~~
      |                 abs
Language: C

#include <stdio.h>

int main(void)
{
        int a,b,c,d;
        int x,y;

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

        if((b<=c){ printf("0\n");
                return 0;
        }

        x=c;
        y=d;
        if(b<d) y=b;
        printf("%d\n",y-x);

        return 0;
}

Compiler output:
main.c: In function 'main':
main.c:10:18: error: expected ')' before '{' token
   10 |         if((b<=c){ printf("0\n");
      |           ~      ^
      |                  )
main.c:20:1: error: expected expression before '}' token
   20 | }
      | ^
Language: C++

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

int main(){
	// sengen
	int a,b,c,d;
	// nyuryoku
	cin >> a >> b >> c >> d;
	// keisan
	int temp;
	if(b>d){
		swap(a,c);
		swap(b,d);
	}
	if(b>c){
		if(c>a){
			cout << b-c;
		}else{
			cout << b-a;
		}
	}else{
		cout << '0';
	}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:10: error: expected '}' at end of input
   24 |         }
      |          ^
a.cc:5:11: note: to match this '{'
    5 | int main(){
      |           ^
Language: C++

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

Compiler output:
a.cc: In function 'int main()':
a.cc:28:12: error: expected '}' at end of input
   28 |   return 0;
      |            ^
a.cc:5:11: note: to match this '{'
    5 | int main(){
      |           ^
Language: C++

#include <iostream>
#include <sstream>
#include <iterator>
#include <string>
#include <vector>
#include <algorithm>
#include <list>

#define YESNO(x) x ? printf("YES") : printf("NO")
#define YesNo(x) x ? printf("Yes") : printf("No")

using namespace std;

//ABC070B - Two Switches
int Main() {
	static const char EMPTY = '.';
	static const char BLACK = '#';
	int a, b, c, d, ans = 0;

	//input
	cin >> a >> b >> c >> d;

	//a b c d = c-b
	//a c b d = b-c
	//a c d b = d-c
	//c a b d = b-a
	//c a d b = d-a
	//c d a b = a-d
#define COND(a,b,c,d)	(a <= b && b <= c && c <=d)
	if (COND(a, b, c, d)) {
		ans = b == c;
	}
	else if (COND(a, c, b, d)) {
		ans = b-c;
	}
	else if (COND(a,c,d,b)) {
		ans = d-c;
	}
	else if (COND(c,a, b,d )) {
		ans = b-a;
	}
	else if (COND(c, a, d, b, )) {
		ans = d-a;
	}
	else if (COND(c, d, a, b, )) {
		ans = d == a;
	}

	cout << ans;

	return 0;
}


int main()
{
	Main();
	return 0;
}

Compiler output:
a.cc:42:35: error: macro "COND" passed 5 arguments, but takes just 4
   42 |         else if (COND(c, a, d, b, )) {
      |                                   ^
a.cc:29:9: note: macro "COND" defined here
   29 | #define COND(a,b,c,d)   (a <= b && b <= c && c <=d)
      |         ^~~~
a.cc:45:35: error: macro "COND" passed 5 arguments, but takes just 4
   45 |         else if (COND(c, d, a, b, )) {
      |                                   ^
a.cc:29:9: note: macro "COND" defined here
   29 | #define COND(a,b,c,d)   (a <= b && b <= c && c <=d)
      |         ^~~~
a.cc: In function 'int Main()':
a.cc:42:18: error: 'COND' was not declared in this scope
   42 |         else if (COND(c, a, d, b, )) {
      |                  ^~~~
Language: C

#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c,d;
	cin>>a>>b>>c>>d;
	int r=0;
	if(a>c){
		r =a;
	}
	else{
		r = c;
	}
	int q;
	if(b>d){
		q = d;
	} 
	else{
		q = b;
	}

	int res;

	res = q-r;
	if(res>0){
	cout<<res;}
	else{
		cout<<"0";
	}
}

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

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

Compiler output:
main.c:1:9: fatal error: ssdio.h: No such file or directory
    1 | #include<ssdio.h>
      |         ^~~~~~~~~
compilation terminated.
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();
        int e = Math.max(a,c);
        int f = Math.min(b.d);
		System.out.println(Math.max(0,f-e));
	}
}


Compiler output:
Main.java:10: error: int cannot be dereferenced
        int f = Math.min(b.d);
                          ^
1 error
Language: C

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

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

Compiler output:
main.c: In function 'main':
main.c:18:59: error: lvalue required as left operand of assignment
   18 |     else if((c<a&&a<b&&b<d)||(c=a&&a<b&&b<d)||(c<a&&a<b&&b=d))
      |                                                           ^
Language: C++

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

int main(){
  int a,b,c,d;
  cin >> a >> b >> c >> d;
  vector<int> A(101);
  int ans = 0;
  rep(i,100){
    if(a <= i && i <= b) ++A[i];
    if(c <= i && i <= d) ++A[i];
  }
  rep(i,100){
    if(A[i] == 2) ++ans;
  }
  else cout << max(0,ans-1) << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:3: error: 'else' without a previous 'if'
   19 |   else cout << max(0,ans-1) << endl;
      |   ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
    // Your code here!
    int A,B,C,D;
    cin>>A>>B>>C>>D;
    if(B<C){
        cout<<0;
    }else{
        cout<<B-C;
    }
returun 0;}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:1: error: 'returun' was not declared in this scope
   12 | returun 0;}
      | ^~~~~~~
Language: C++

#include<bits/stdc++.h>


using namespace std;
 
int main(){
int a,b,c,d;

    cin >> a >> b >> c >> d;

    int max = max(a,c);
    int min = min(b,d);

    if(max > min){
        cout << 0;
    }else{
        cout << min - max;
    }
        return 0;
    

}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:18: error: 'max' cannot be used as a function
   11 |     int max = max(a,c);
      |               ~~~^~~~~
a.cc:12:18: error: 'min' cannot be used as a function
   12 |     int min = min(b,d);
      |               ~~~^~~~~
Language: C

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(void){
int a,b,c,d;
scanf("%d %d %d %d",&a,&b,&c,&d);
int now=0;
int count;
for(count=0;count<101;count++){
if((count=>a&&count<=b)&&(count=>c&&count<=d)){now++;}
printf("%d",now);
}
}

Compiler output:
main.c: In function 'main':
main.c:10:11: error: expected expression before '>' token
   10 | if((count=>a&&count<=b)&&(count=>c&&count<=d)){now++;}
      |           ^
main.c:10:33: error: expected expression before '>' token
   10 | if((count=>a&&count<=b)&&(count=>c&&count<=d)){now++;}
      |                                 ^
Language: C++

#include <iostream>
using namespace std;

int main(void){
  int a, b, c, d;
  cin >> a >> b >> c >> d;
  
  const int lower = max(a, c);
  const int upper = min(b, d);
  
  if (lower > upper) ans = 0;
  else ans = upper - lower;
  
  cout << ans << endl;
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:22: error: 'ans' was not declared in this scope; did you mean 'abs'?
   11 |   if (lower > upper) ans = 0;
      |                      ^~~
      |                      abs
a.cc:12:8: error: 'ans' was not declared in this scope; did you mean 'abs'?
   12 |   else ans = upper - lower;
      |        ^~~
      |        abs
a.cc:14:11: error: 'ans' was not declared in this scope; did you mean 'abs'?
   14 |   cout << ans << endl;
      |           ^~~
      |           abs
Language: C++

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

Compiler output:
a.cc: In function 'int main()':
a.cc:10:23: error: expected ';' before 'if'
   10 |   if(c>>b) printf("0")
      |                       ^
      |                       ;
   11 |   if(b>>c) printf("%d",g);
      |   ~~
Language: C++

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

Compiler output:
a.cc: In function 'int main()':
a.cc:10:23: error: expected ';' before 'if'
   10 |   if(d>>b) printf("0")
      |                       ^
      |                       ;
   11 |   if(b>>d) printf("%d",g);
      |   ~~
Language: C++

#include <iostream>
using namespace std;
int main(){
  int A,B,C,D;
  cin >> A >> B >> C >> D;
  int start, end;
  if (A < C) {
    start = A;
  } else {
    start = C;
  }
  if (B < D) {
    end = D;
  } else {
    end = B;
  }
  if (start < end) {
    cout << end;
  } else {
    count << 0;
  }
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:5: error: 'count' was not declared in this scope
   20 |     count << 0;
      |     ^~~~~
Language: C++

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

int main(){
	int a`,b,c,d;
	cin >> a>>b>>c>>d;
  	if(c>b)cout<<0<<endl;
  	if(b>c)cout << b-c<<endl;
    if(a<c&&b<d)cout << d-b<<endl;
  	if(c<a&&d<b)cout << c-a << endl;
}

Compiler output:
a.cc:5:14: error: stray '`' in program
    5 |         int a`,b,c,d;
      |              ^
Language: C++

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

int main(){
	int a`,b,c,d;
	cin >> a>>b>>c>>d;
  	if(c>b)cout<<0<<endl;
  	if(b>c)cout << b-c<<endl;
    if(a<c&&b<d)cout << d-b<<endl;
}

Compiler output:
a.cc:5:14: error: stray '`' in program
    5 |         int a`,b,c,d;
      |              ^
Language: Java


import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

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 {
        	int s = Math.max(a, c);
        	int e = Math.min(a, b)
        	System.out.println(e - s);
        }
    }
}

Compiler output:
Main.java:19: error: ';' expected
        	int e = Math.min(a, b)
        	                      ^
1 error
Language: C++

#include <iostream>
#include <string>
#include <math.h>
#include <vector>
#include <algorithm>
#include <iomanip>
#include <set>
#include <queue>
#define mod 1000000007
#define ten5 100005
#define PI 3.1415926
using namespace std;

int num[52];

int main()
{
    //int m,n,o=0,i,j,k;
    long long int sum=0,sum2=0,n1=0,n2=0,n3;
    double ans=0.0,half;
    long long int m,n,o,i,j,k=1,now=1;
    long long int a,a1,a2,a3;
    //float f,g,h;
    //char now,pre;
    string s,s1;
    cin>>a>>a1>>a2>>a3;
    if(a3>a2||a1>a4) cout<<0;
    else if(a1<a3)
    {
        if(a4>=a2) cout<<a2-a3;
        else cout<<a4-a3;
    }
    else if(a1>=a3)
    {
        if(a4>=a2) cout<<a2-a1;
        else cout<<a4-a1;
    }
    return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:27:18: error: 'a4' was not declared in this scope; did you mean 'a3'?
   27 |     if(a3>a2||a1>a4) cout<<0;
      |                  ^~
      |                  a3
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(B<=C || D<=A)System.out.println(0);
   else if(C<=A&& B<=D) System.out.println(B-A);
   else if(A<=C&& D<=B) System.out.println(D-C);
   else if(B>C) System.out.println(B-C);
   else System.out.println(A-D)
 }
}

Compiler output:
Main.java:14: error: ';' expected
   else System.out.println(A-D)
                               ^
1 error
Language: C++

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

using namespace std;

/*long C(long n, long r){
    if(n < r) return 0;
    long p[n+1][n+1];
    p[0][0] = 1;
    for(int i = 1; i <= n; i++){
        p[i][0] = 1;
        p[i][i] = 1;
        for(int j = 1; j <= i-1; j++){
            p[i][j] = p[i-1][j] + p[i-1][j-1];
        }
    }
    return p[n][r];
}*/

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

Compiler output:
a.cc: In function 'void solve()':
a.cc:22:5: error: 'cin' was not declared in this scope
   22 |     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 | #define REP(i, n) for (int i = 0; i < n; i++)
a.cc:24:18: error: 'min' was not declared in this scope
   24 |     ans = max(0, min(d, b) - max(a, c));
      |                  ^~~
a.cc:24:30: error: 'max' was not declared in this scope
   24 |     ans = max(0, min(d, b) - max(a, c));
      |                              ^~~
a.cc:24:11: error: 'max' was not declared in this scope
   24 |     ans = max(0, min(d, b) - max(a, c));
      |           ^~~
a.cc:25:5: error: 'cout' was not declared in this scope
   25 |     cout << ans << endl;
      |     ^~~~
a.cc:25:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:25:20: error: 'endl' was not declared in this scope
   25 |     cout << ans << endl;
      |                    ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | #define REP(i, n) for (int i = 0; i < n; i++)
Language: C++

#include <vector>
#include <math.h>
#include <iostream>
#include <string>
#include <algorithm>
#include <queue>
#include <iomanip>
#include <deque>

using namespace std;
using uint = unsigned int;
using ll = long long;
using ull = unsigned long long;
template <class T> using V = vector<T>;
template <class T> using VV = V<V<T>>;
#define rep(i, n) for(int i = 0; i<n; i++)
#define rep_s(i, start, n) for(int i= start;  i<n; i++)
#define ALL(a) (a).begin(), (a).end()
string alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

/*
using edge = struct {int to; ll cost;};
vector<edge> tree[limit];
ll depth[limit];

void dfs(int v, int p, ll d){
  depth[v] = d;
  //cout <<"v: " << v << endl;
  for (auto &e: tree[v]){
    //cout << "e.to: " << e.to << endl;
    if (e.to == p) continue;
    dfs(e.to, v, d+e.cost);
  }
}
*/

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


Compiler output:
a.cc: In function 'int main()':
a.cc:40:16: error: expected ';' before 'b'
   40 |   a = max(a, c)
      |                ^
      |                ;
   41 |   b = min(b, d);
      |   ~
Language: C++

#include<bits/stdc++.h>

using namespace std;

int main(){
	int a , b , c, d;
     cin >> a >> b >> c >> d;
  	int u = max(a,c);
 	int  l = min(b,d);
    int ans = abs(u - l);
  	cout << max(0, ans);


Compiler output:
a.cc: In function 'int main()':
a.cc:11:29: error: expected '}' at end of input
   11 |         cout << max(0, ans);
      |                             ^
a.cc:5:11: note: to match this '{'
    5 | int main(){
      |           ^
Language: C

nclude<stdio.h>
int main(void)
{
	int A,B,C,D;
	int bc,da,dc,ba;
			
	scanf("%d%d%d%d",&A,&B,&C,&D);
	
	if(A < B && C < D)
	{
		if(A< B && C < D && B < C)
		{
			printf("0\n");
		}
		else if(A< B && C < D && D < A)
		{
			printf("0\n");
		}
		
		else if(A < C && B < D && C < B)
		{
			bc = B - C;
			printf("%d\n",bc);
		}
		else if(C < A && D < B && A < D)
		{
			da = D - A;
			printf("%d\n",da);
		}
		else if(A < C && D < B)
		{
			dc = D - C;
			printf("%d\n",dc);
		}
		else if(C < A && B < D)
		{
			ba = B - A;
			printf("%d\n",ba);
		}
	}
	else
	{
		printf("エラー");
	}
	
	return 0;
}

Compiler output:
main.c:1:7: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    1 | nclude<stdio.h>
      |       ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll = long long ;
using P = pair<ll, ll>;
using Vec = vector<ll>;
#define FOR(i, m, n) for(ll (i) = (m); (i) < (n); (i)++)
#define FORN(i, m, n) for(ll (i) = (m); (i) <= (n); (i)++)
#define FORR(i, m, n) for(ll (i) = (m); (i) >= (n); (i)--)
#define rep(i, n) FOR(i, 0, n)
#define repn(i, n) FORN(i, 1, n)
#define repr(i, n) FORR(i, n, 0)
#define repnr(i, n) FORR(i, n, 1)
#define co(n) cout << (n) << endl
#define cosp(n) cout << (n) << ' '
#define setp(n) cout << fixed << setprecision(n);
#define all(s) (s).begin(), (s).end()
#define pb push_back
#define mp make_pair
#define fs first
#define sc second

const ll INF = 1e9+1;
const ll LINF = 1e18+1;
const ll MOD = 1e9+7;
//const ll MOD = 998244353;
const double PI = acos(-1);
const double EPS = 1e-9;

int main(void){
	ll a, b, c, d;
	cin a >> b >> c >> d;
	ll ans = min(b, d)-max(a, c);
	co(max(ans, 0LL));

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:31:12: error: expected ';' before 'a'
   31 |         cin a >> b >> c >> d;
      |            ^~
      |            ;
Language: C++

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


Compiler output:
a.cc: In function 'int main()':
a.cc:9:20: error: 'o' was not declared in this scope
    9 |     if(b<c){result=o;}
      |                    ^
Language: C++

#include<bits/stdc+.h>
using namespace std;
int main(){
  int A,B,C,D;
  cin>>A>>B>>C>>D;
  cout<<min(B,D)-max(A,C)<<endl;
  }

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

#include<bits/stdc++.h>
using namespace std;
int main(){
  int a,b,c,d;
  cin >> a >> b >> c >> d;
  int upper=min(b,d),lower=max(a,c);
  cout << max(o,upper-lower) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:15: error: 'o' was not declared in this scope
    7 |   cout << max(o,upper-lower) << endl;
      |               ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main() {
    int A, B, C, D;
    cin >> A >> B >> C >> D;
    int overlap;
    if (A<=C) {
        if (C<=B && D<=B) overlap = D-C;
        else if (C<=B && D>B) overlap = B-C;
        else overlap = 0;
    }

    if (C<A) {
        if (A<=D && D<=B) overlap = D-A;
        else if (A<=D && D>B) overlap = C-A;
        else overlap = 0;
    }

    cout << overlap << endl;

    return 0;
}    cout << overlap << endl;

    return 0;
}

Compiler output:
a.cc:22:6: error: 'cout' does not name a type
   22 | }    cout << overlap << endl;
      |      ^~~~
a.cc:24:5: error: expected unqualified-id before 'return'
   24 |     return 0;
      |     ^~~~~~
a.cc:25:1: error: expected declaration before '}' token
   25 | }
      | ^
Language: C++

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

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

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:28: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
   11 |   else if(b<=d) cout < b-c << endl;
      |                        ~~~~^~~~~~~
a.cc:12:28: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
   12 |   else if(d<=b) cout < d-a << endl;
      |                        ~~~~^~~~~~~
Language: C++

//070
#include <bits/stdc++.h>
#define rep(i,n) for(int i=0; i<n; i+=1)
using namespace std;

int main(void){
    int a,b,c,d;
    cin >> a >> b >> c >> d;
    if (a<=c){
        if(b<=d and b>c){
            cout << b-c << endl;
            return 0;
        }else if(b>d){
            cout << d-c << endl;
            return 0;
        }
        
    }else if(c<a){
        if(d<=b and d>a){
            cout << d-a << endl;
            return 0;
        }else if(d>b){
            cout << b-a << endl;
            return 0;
        }
        
    }

Compiler output:
a.cc: In function 'int main()':
a.cc:27:6: error: expected '}' at end of input
   27 |     }
      |      ^
a.cc:6:15: note: to match this '{'
    6 | int main(void){
      |               ^
Language: C++

#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;

  for(int i=0;i<100;i++){
    if(a>i && b<i && c>i && d<i){
      ans++;
    }
  }
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:7: error: 'ans' was not declared in this scope; did you mean 'abs'?
   17 |       ans++;
      |       ^~~
      |       abs
a.cc:20:11: error: 'ans' was not declared in this scope; did you mean 'abs'?
   20 |   cout << ans << endl;
      |           ^~~
      |           abs
Language: C++

#include <iostream>

using namespace std;

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

    return 0;
}
#include <iostream>

using namespace std;

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

    return 0;
}


Compiler output:
a.cc:28:5: error: redefinition of 'int main()'
   28 | int main()
      |     ^~~~
a.cc:5:5: note: 'int main()' previously defined here
    5 | int main()
      |     ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main(){
  int a,b,c,d;
  cin >>a>>b>>c>>d;
  
  if ((b>=c)&&(b<=d)){
    cout << b-c <<endl;
  }
  else if((b>=c)&&(b>=d)){
    cout << d-c <<endl;
  }
   else if((a=<d)&&(b>=d)){
     cout <<d-a <<endl;
   }
  else if((c=<a)&&(d>=b)){
    cout <<b-a <<endl;
          }
  else{
    cout << "0" <<endl;
  }
}
    

    


Compiler output:
a.cc: In function 'int main()':
a.cc:14:15: error: expected primary-expression before '<' token
   14 |    else if((a=<d)&&(b>=d)){
      |               ^
a.cc:17:14: error: expected primary-expression before '<' token
   17 |   else if((c=<a)&&(d>=b)){
      |              ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main{
  int a,b,c,d;
  cin >>a>>b>>c>>d;
  
  if ((b>c)&&(b<d)){
    cout << b-c <<endl;
  }
  else if((b>c)&&(b>d){
    cout << d-c <<endl;
  }
   else if((b<c)){
     cout <<"0" <<endl;
   }
          }
    

Compiler output:
a.cc:4:5: error: cannot declare '::main' to be a global variable
    4 | int main{
      |     ^~~~
a.cc:5:3: error: expected primary-expression before 'int'
    5 |   int a,b,c,d;
      |   ^~~
a.cc:5:3: error: expected '}' before 'int'
a.cc:4:9: note: to match this '{'
    4 | int main{
      |         ^
a.cc:6:3: error: 'cin' does not name a type
    6 |   cin >>a>>b>>c>>d;
      |   ^~~
a.cc:8:3: error: expected unqualified-id before 'if'
    8 |   if ((b>c)&&(b<d)){
      |   ^~
a.cc:11:3: error: expected unqualified-id before 'else'
   11 |   else if((b>c)&&(b>d){
      |   ^~~~
a.cc:14:4: error: expected unqualified-id before 'else'
   14 |    else if((b<c)){
      |    ^~~~
a.cc:17:11: error: expected declaration before '}' token
   17 |           }
      |           ^
Language: C++

#include <iostream>
#include <cmath>
#include <cstdio>
using namespace std;

int main(){
    int a,b,c,d;
    cin>>a>>b>>c>>d;
    int st = max(a,c);
    int en = min(b,d);
    printf("%d",max(0,en-st);
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:29: error: expected ')' before ';' token
   11 |     printf("%d",max(0,en-st);
      |           ~                 ^
      |                             )
Language: C++

#include <iostream>
#include <cmath>
#include <cstdio>
using namespace std;

int main( ){
    int a,b,c,d;
    cin>>a>>b>>c>>d;
    int st = max(a,c);
    int en = min(b,d);
    printf("%d",max(0,en-st);
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:29: error: expected ')' before ';' token
   11 |     printf("%d",max(0,en-st);
      |           ~                 ^
      |                             )
Language: C++

#include <bits/stdc++.h>
#include <math.h>
using namespace std;
int samecount(string S){
    int A = 0;
    for(int i = 0;i < S.size();i++){
        int QA = 1;
        for(int j = i ;j < S.size() - 1;j++){
           if(S.at(j) == S.at(j + 1)){
               QA++ ;
           }
           if(S.at(j) != S.at(j + 1)){
               break;
           }
           
        }
        A = max(QA,A);
    }
    return A;
}

int64_t minn(int64_t a,int64_t b){
    if(a >= b) return b;
    else return a;
}
int main(){
    int a,b,c,d;
    cin >>a>>b>>c>>d;
    if(((b-a)+(d-c) - (d-a)) >= 0)cout << (b-a)+(d-c) - (max({a,b,c,d} - min({a,b,c,d})) << endl;
    else cout << 0 << endl;
}
    

Compiler output:
a.cc: In function 'int main()':
a.cc:29:71: error: expected ')' before '-' token
   29 |     if(((b-a)+(d-c) - (d-a)) >= 0)cout << (b-a)+(d-c) - (max({a,b,c,d} - min({a,b,c,d})) << endl;
      |                                                             ~         ^~
      |                                                                       )
a.cc:29:90: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
   29 |     if(((b-a)+(d-c) - (d-a)) >= 0)cout << (b-a)+(d-c) - (max({a,b,c,d} - min({a,b,c,d})) << endl;
      |                                                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
a.cc:29:97: error: expected ')' before ';' token
   29 |     if(((b-a)+(d-c) - (d-a)) >= 0)cout << (b-a)+(d-c) - (max({a,b,c,d} - min({a,b,c,d})) << endl;
      |                                                         ~                                       ^
      |                                                                                                 )
Language: C++

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

int int_len(int n) {
  int s=0;
  while(n!=0) s++, n/=10;
  return s;
}

int int_sum(int n) {
  int m=0,s=0,a=n;
  while(a!=0) s++, a/=10;
  for(int i=s-1;i>=0;i--) m+=n/((int)pow(10,i))-(n/((int)pow(10,i+1)))*10;
  return m;
}


int vec_sum(vector<int> v){
  int n=0;
  for(int i=0;i<v.size();i++) n+=v[i];
  return n;
}
///////////////////////////
int main() {
  int a=0,b=0,c=0,m=0,n=0,h=0,w=0,count=0,ans=0;
  string s;
  cin>>a>>b>>c>>d;
  n=min(b,d)-max(a,c);
  if(n>0){
    cout<<n<<endl;
  }else{
    cout<<0<<endl;
  }
}
///////////////////////////

Compiler output:
a.cc: In function 'int main()':
a.cc:28:17: error: 'd' was not declared in this scope
   28 |   cin>>a>>b>>c>>d;
      |                 ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep2(i, s, n) for (int i = (s); i < (int)(n); i++)
typedef long long ll;

int main() {
    int A, B, C, D;
    cin >> A >> B >> C >> D;
    int cnt = 0;
    for (int i = 0; i < 100; i++)[
        if (A <= i && i <= B && C <= i && i <= D){
            cnt++;
        }
    ]
    cout << cnt << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:9: error: expected identifier before 'if'
   12 |         if (A <= i && i <= B && C <= i && i <= D){
      |         ^~
a.cc: In lambda function:
a.cc:16:5: error: expected '{' before 'cout'
   16 |     cout << cnt << endl;
      |     ^~~~
a.cc: In function 'int main()':
a.cc:15:6: error: expected ';' before 'cout'
   15 |     ]
      |      ^
      |      ;
   16 |     cout << cnt << endl;
      |     ~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep2(i, s, n) for (int i = (s); i < (int)(n); i++)
typedef long long ll;

int main() {
    int A, B, C, D;
    cin >> A >> B >> C >> D;
    int cnt = 0;
    for (int i = 0; i < 100; i++)[
        if (A <= i && i <= B && C <= i && i << D){
            cnt++
        }
    ]
    cout << cnt << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:9: error: expected identifier before 'if'
   12 |         if (A <= i && i <= B && C <= i && i << D){
      |         ^~
a.cc: In lambda function:
a.cc:16:5: error: expected '{' before 'cout'
   16 |     cout << cnt << endl;
      |     ^~~~
a.cc: In function 'int main()':
a.cc:15:6: error: expected ';' before 'cout'
   15 |     ]
      |      ^
      |      ;
   16 |     cout << cnt << endl;
      |     ~~~~
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define MAX_N 10000000
#define ll longlong
using namespace std;

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

Compiler output:
a.cc: In function 'int main()':
a.cc:11:30: error: expected ',' or ';' before ')' token
   11 |     int count=max(0,high-low));
      |                              ^
Language: C++

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

int main(){
  int a,b,c,d;
  cin>>a>>b>>c>>d;
  int x=max(a,c),y=min(b,d);
  if(y-z<0) cout<<0<<endl;
  else cout<<y-x<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:8: error: 'z' was not declared in this scope
    8 |   if(y-z<0) cout<<0<<endl;
      |        ^
Language: C++

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

int main(){
  int a,b,c,d;
  cin>>a>>b>>c>>d;
  int x=max(a,c),y=min(b,d);
  if(y-x<0) cout<<0<<endl;
  else cout<<y-z<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:16: error: 'z' was not declared in this scope
    9 |   else cout<<y-z<<endl;
      |                ^
Language: C++

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

int main(){
  int a,b,c,d;
  cin>>a>>b>>c>>d;
  int x=max(a,c),y=min(b,d);
  if(y-z<0) cout<<0<<endl;
  else cout<<y-z<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:8: error: 'z' was not declared in this scope
    8 |   if(y-z<0) cout<<0<<endl;
      |        ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
int main() {
  int A, B,C, D;
  cin >> A >> B >> C >> D;
  
  int lower max(A, C);
  int upper min(B, D);
  
  cout << upper-lower << endl;
  
  
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:13: error: expected initializer before 'max'
    8 |   int lower max(A, C);
      |             ^~~
a.cc:9:13: error: expected initializer before 'min'
    9 |   int upper min(B, D);
      |             ^~~
a.cc:11:11: error: 'upper' was not declared in this scope; did you mean 'toupper'?
   11 |   cout << upper-lower << endl;
      |           ^~~~~
      |           toupper
a.cc:11:17: error: 'lower' was not declared in this scope; did you mean 'tolower'?
   11 |   cout << upper-lower << endl;
      |                 ^~~~~
      |                 tolower
Language: C++

#include <iostream>
#include <vector>

using namespace std;

int main(){
  int A, B, C, D;
  cin >> A >> B >> C >> D;
  
  cout << max(min(B,D) - min(A,C));
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:14: error: no matching function for call to 'max(int)'
   10 |   cout << max(min(B,D) - min(A,C));
      |           ~~~^~~~~~~~~~~~~~~~~~~~~
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: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:   candidate expects 2 arguments, 1 provided
/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, 1 provided
Language: C++

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

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

Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: 'k' was not declared in this scope
    6 |   k=min(B,D)-max(A,C);
      |   ^
Language: C++

#include <iostream>
using namespace std;
int main()
{
 int n,a,t=0,p,q,r;
 cin>>n;
 n--;
  cin>>p>>q>>r;
  if(p+q+r>1)t++;
 cout<<t;
 return 0;


Compiler output:
a.cc: In function 'int main()':
a.cc:11:11: error: expected '}' at end of input
   11 |  return 0;
      |           ^
a.cc:4:1: note: to match this '{'
    4 | {
      | ^
Language: C++

#include <bits/stdc++.h>

using namespace std;

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

        }

    return 0;
}#include <bits/stdc++.h>

using namespace std;

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

        }

    return 0;
}

Compiler output:
a.cc:21:2: error: stray '#' in program
   21 | }#include <bits/stdc++.h>
      |  ^
a.cc:21:3: error: 'include' does not name a type
   21 | }#include <bits/stdc++.h>
      |   ^~~~~~~
a.cc:25:5: error: redefinition of 'int main()'
   25 | int main()
      |     ^~~~
a.cc:5:5: note: 'int main()' previously defined here
    5 | int main()
      |     ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int A,B,C,D;
    int main()
//    ftfjdt
    {
    	
       scanf("%d %d %d %d",&A,&B,&C,&D);
  

	cout<<max(0,min(B,D)-max(A,C));
return 0;


Compiler output:
a.cc: In function 'int main()':
a.cc:12:10: error: expected '}' at end of input
   12 | return 0;
      |          ^
a.cc:6:5: note: to match this '{'
    6 |     {
      |     ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c,d;
	cin>>a>>b>>c>>d;
	if(a<c){
	for(int i=a;i<=b;i++){
	if(i==C){
	if(D>B){
cout<<(B-i);
}
else if(B>D)
cout<<(D-i);	
}
}
if(B<C){
cout<<"0";
}
}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:15: error: 'C' was not declared in this scope
    8 |         if(i==C){
      |               ^
a.cc:9:12: error: 'D' was not declared in this scope
    9 |         if(D>B){
      |            ^
a.cc:9:14: error: 'B' was not declared in this scope
    9 |         if(D>B){
      |              ^
a.cc:16:4: error: 'B' was not declared in this scope
   16 | if(B<C){
      |    ^
a.cc:16:6: error: 'C' was not declared in this scope
   16 | if(B<C){
      |      ^
Language: C++

#include<bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef pair<ll,ll> P;
typedef tuple<ll,ll,ll> TUP;
#define rep(i,n) for(int i=0;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
#define mp(a,b) make_pair(a,b)
const ll MOD=1000000007;

int main(){
  ll a,b,c,d; cin>>a>>b>>c>>d;
  if(A>=C+D) cout<<0;
  else if(A+B<C) cout<<0;
    else{
    	cout<<min(C+D-A,A+B-C);
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:6: error: 'A' was not declared in this scope
   14 |   if(A>=C+D) cout<<0;
      |      ^
a.cc:14:9: error: 'C' was not declared in this scope
   14 |   if(A>=C+D) cout<<0;
      |         ^
a.cc:14:11: error: 'D' was not declared in this scope
   14 |   if(A>=C+D) cout<<0;
      |           ^
a.cc:15:13: error: 'B' was not declared in this scope
   15 |   else if(A+B<C) cout<<0;
      |             ^
Language: C++

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

int main(void){
  int A,B,C,D;
  cin>>A>>B>>C>>D;
  const int lower=max(A,C);
  const int upper=min(B,D);
  
  cout <<max(0,uppe-lower)<<endl;
  
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:16: error: 'uppe' was not declared in this scope; did you mean 'upper'?
   10 |   cout <<max(0,uppe-lower)<<endl;
      |                ^~~~
      |                upper
Language: C++

int main(void){
  int A,B,C,D;
  cin>>A>>B>>C>>D;
  const int lower=max(A,C);
  const int upper=min(B,D);
  
  cout <<max(0,uppe-lower)<<endl;
  
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:3:3: error: 'cin' was not declared in this scope
    3 |   cin>>A>>B>>C>>D;
      |   ^~~
a.cc:4:19: error: 'max' was not declared in this scope
    4 |   const int lower=max(A,C);
      |                   ^~~
a.cc:5:19: error: 'min' was not declared in this scope; did you mean 'main'?
    5 |   const int upper=min(B,D);
      |                   ^~~
      |                   main
a.cc:7:3: error: 'cout' was not declared in this scope
    7 |   cout <<max(0,uppe-lower)<<endl;
      |   ^~~~
a.cc:7:16: error: 'uppe' was not declared in this scope; did you mean 'upper'?
    7 |   cout <<max(0,uppe-lower)<<endl;
      |                ^~~~
      |                upper
a.cc:7:29: error: 'endl' was not declared in this scope
    7 |   cout <<max(0,uppe-lower)<<endl;
      |                             ^~~~