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

#include <iostream>
#include <cstdlib>
#include <string>
#include <vector>
#include <map>
#include <algorithm>
#include <functional>
#include <iomanip>
#include <queue>
#include <stack>
#include <stdlib.h>
using namespace std;
#define rep(i,n) for (int i = 0; i <n; i++) 
#include <math.h>
#include <bits/stdc++.h>
using namespace std;

using namespace std;
int main(){
    long long l,r,k=2019;
    std::cin >> l>>r;
    int t=2019;
    if(r-l>=2018)std::cout << 0 << std::endl;
    else{
        for(int i=l;i<r;i++){
            for(int j=i+1;j<=r;j++){
                k=(i*j)%2019;
                t=min(t,k);
            }
        }
        std::cout << t << std::endl;
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:28:22: error: no matching function for call to 'min(int&, long long int&)'
   28 |                 t=min(t,k);
      |                   ~~~^~~~~
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: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:   template argument deduction/substitution failed:
a.cc:28:22: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   28 |                 t=min(t,k);
      |                   ~~~^~~~~
/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, 2 provided
In file included from /usr/include/c++/14/algorithm:61,
                 from a.cc:6:
/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, 2 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:   template argument deduction/substitution failed:
a.cc:28:22: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   28 |                 t=min(t,k);
      |                   ~~~^~~~~
Language: C++

#include <iostream>

using namespace std;

int main()
{
    const unsigned long long CONSTANT =
    unsigned long long l,r;
    unsigned long long bufm1;
    unsigned long long bufd1,bufd2;

    cin >> l;
    cin >> r;

    bufd1 = l / CONSTANT;
    bufd2 = r / CONSTANT;
    
    if(bufd2 - bufd1 >= 1){
        cout << 0;
    }
    else{
        bufm1 = l % CONSTANT;
        cout << bufm1 * (bufm1+1);
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:5: error: expected primary-expression before 'unsigned'
    8 |     unsigned long long l,r;
      |     ^~~~~~~~
a.cc:12:12: error: 'l' was not declared in this scope
   12 |     cin >> l;
      |            ^
a.cc:13:12: error: 'r' was not declared in this scope
   13 |     cin >> r;
      |            ^
Language: C++

#include<iostream>
#include<algorithm>
#define int double
using namespace std;

signed main()
{
	int L,R;
	int answer;
	int ans;
	cin >> L >> R;
	for (int i = L; i < R + 1; i++) {
		answer = max(answer, i % 2019);
	}
	for (int j = L; j < R + 1; j++) {
		if (j = answer) {
			continue;
		}
		ans = max(ans, j % 2019);
	}
	cout << (ans * answer) % 2019 << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:40: error: invalid operands of types 'double' and 'int' to binary 'operator%'
   13 |                 answer = max(answer, i % 2019);
      |                                      ~ ^ ~~~~
      |                                      |   |
      |                                      |   int
      |                                      double
a.cc:19:34: error: invalid operands of types 'double' and 'int' to binary 'operator%'
   19 |                 ans = max(ans, j % 2019);
      |                                ~ ^ ~~~~
      |                                |   |
      |                                |   int
      |                                double
a.cc:21:32: error: invalid operands of types 'double' and 'int' to binary 'operator%'
   21 |         cout << (ans * answer) % 2019 << endl;
      |                 ~~~~~~~~~~~~~~ ^ ~~~~
      |                      |           |
      |                      double      int
Language: C++

//おまじない
#include <bits/stdc++.h>
using namespace std;
 
int main() {
long long int l,r;
  cin>>l>>r;
 int m=2019;
  vector<int> v(r-l+1);
  for(long long int i=0;i<r-l+1;i++){
    v.at(i)=(l+i)%m;}
} 
int min=2018;
long int n;
for(long long int i=0;i<r-l;i++){
  for(long long int j=i+1;j<r-l+1;j++){
    n=(v.at(i)*v.at(j))%m;
    if(min>n){
      min=n;}
  }
}
cout<<min<<endl;
}
    

Compiler output:
a.cc:15:1: error: expected unqualified-id before 'for'
   15 | for(long long int i=0;i<r-l;i++){
      | ^~~
a.cc:15:23: error: 'i' does not name a type
   15 | for(long long int i=0;i<r-l;i++){
      |                       ^
a.cc:15:29: error: 'i' does not name a type
   15 | for(long long int i=0;i<r-l;i++){
      |                             ^
a.cc:22:1: error: 'cout' does not name a type
   22 | cout<<min<<endl;
      | ^~~~
a.cc:23:1: error: expected declaration before '}' token
   23 | }
      | ^
Language: C++

#include <bits/stdc++.h>
#define REP(i, n) for(int i = 0;i < n;i++)
#define SORT(v, n) sort(v, v+n);
#define VSORT(v) sort(v.begin(), v.end())
#define VRSORT(v) sort(v.rbegin(), v.rend())
#define ll long long
#define pb(a) push_back(a)
#define INF 1000000000
#define MOD 1000000007
using namespace std;
typedef pair<int, int> P;
typedef pair<ll, ll> LP;
typedef pair<int, P> PP;
typedef pair<ll, LP> LPP;

typedef vector<unsigned int>vec;
typedef vector<vec> mat;

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

const int dx[8] = {1, 0, -1, 0, 1, -1, -1, 1};
const int dy[8] = {0, 1, 0, -1, 1, 1, -1, -1};
const double PI = acos(-1.0);
const double EPS = 1e-10;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    ll L,R;
    cin>>L>>R;
    int l = L%2019;
    int r = R%2019;
    ll mi = 2018;
    if(l>=r){
        cout<<0<<endl;
        return 0;
    }
    for(int i=l;i<r;i++){
        for(int j=i+1;j<=r;j++){
            chmin(mi,(iLL*jLL)%2019LL);
        }
    }
    cout<<mi<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:42:23: error: 'iLL' was not declared in this scope
   42 |             chmin(mi,(iLL*jLL)%2019LL);
      |                       ^~~
a.cc:42:27: error: 'jLL' was not declared in this scope
   42 |             chmin(mi,(iLL*jLL)%2019LL);
      |                           ^~~
Language: Java

import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        long l = Integer.parseInt(sc.next());
        long r = Integer.parseInt(sc.next());
        int res = 2018;
        int hi = 0;
        for (int x=(int)l; x<=r; x++) {
            long tmp = (x*(x+1))%2019;
            int tp = int(tmp);
            res = res<tp?res:tp;
            if (res==0) {
                System.out.println(res);
                return;
            }
            hi++;
            if (hi > 1000000) {
                break;
            }
        }
        System.out.println(res);
        
    }
}


Compiler output:
Main.java:12: error: '.class' expected
            int tp = int(tmp);
                        ^
Main.java:12: error: not a statement
            int tp = int(tmp);
                         ^
Main.java:12: error: ';' expected
            int tp = int(tmp);
                            ^
3 errors
Language: C++

// Undone
#include <bits/stdc++.h>
#define int long long
#define double long double
#define INF 1e18
#define MOD 1000000007
using namespace std
signed main() {
  int L, R;
  cin >> L >> R;
  for (int i = 0; i < 1000; i++) {
    if (L <= 2019*i && 2019*i <= R) {
      cout << 0 << endl;
      return 0;
    }  
  }
  // O(10^6)
  int ans = INF;
  for (int i = L; i < R; i++) {
    for (int j = i+1; j <= R; j++) {
      ans = min(ans, i*j%2019);
    }
  }
  cout << ans << endl;
}



Compiler output:
a.cc:7:20: error: expected ';' before 'signed'
    7 | using namespace std
      |                    ^
      |                    ;
    8 | signed main() {
      | ~~~~~~
Language: C++

#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <utility>
#include <algorithm>
#include <numeric>
#include <string>

using namespace std;
using ll = long long int;

#define rep(i, j) for(ll i = 0; i < (j); ++i)

int main(){
    ll L, R;
    cin >> L >> R;

    bool t = false, s = false, r = false;

    for(ll i = L; i <= R; ++i){
        if(i % 2019 == 0){
            r = true;
            continue;
        }
        if(i % 3 == 0) t = true;
        if(i % 673 == 0) s = true;
        if(t && s) break;
    }
    if(t && s){
        cout << 0 << endl;
        return;
    }
    if(r && (t || s)){
        cout << 0 << endl;
        return;
    }

    ll minv = 2019;
    for(ll i = L; i <= R; ++i){
        for(ll j = i+1; j <= R; ++j){
            auto tmp = (i * j) % 2019;
            if(minv > tmp) minv = tmp;
        }
    }
    cout << minv << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:33:9: error: return-statement with no value, in function returning 'int' [-fpermissive]
   33 |         return;
      |         ^~~~~~
a.cc:37:9: error: return-statement with no value, in function returning 'int' [-fpermissive]
   37 |         return;
      |         ^~~~~~
Language: C

#include<stdio.h>
#include<math.h>
int main(){
  int l,r;
  int ans;
  scanf("%d %d",&l,&r);
  for(int i=l;i<r;i++){
    for(int j=i+1;j<=r;j++){
      if((i*j)%2019<ans){
        ans=(i*j)%2019
      } 
    }
  }
  printf("%d",ans);
return 0;
}

Compiler output:
main.c: In function 'main':
main.c:10:23: error: expected ';' before '}' token
   10 |         ans=(i*j)%2019
      |                       ^
      |                       ;
   11 |       }
      |       ~
Language: C++

#include<stdio.h>
int main()
{
    int L,R,i,j,k,u;
    u=2019;
    scanf("%d" "%d", &L,&R);
    // スペース区切りの整数の入力
    for(i=L;i<R;i++){
	for(j=i+1;j<=R;j++){
		i=i%2019;
		j=j%2019;
		k=I*J%2019;
		if(k<u)
			u=k;
			}}

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


Compiler output:
a.cc: In function 'int main()':
a.cc:12:19: error: 'I' was not declared in this scope
   12 |                 k=I*J%2019;
      |                   ^
a.cc:12:21: error: 'J' was not declared in this scope
   12 |                 k=I*J%2019;
      |                     ^
Language: C++

#include <iostream>

int main() {
	int l, r;
	std::cin >> l >> r;
	int result = INT_MAX;
	for (int i = l; i <= r - 1; i++) {
		for (int j = l + 1; j <= r; j++) {
			int a = (i * j) % 2019;
			if (result > a) result = a; 
		}
	} 
	
	std::cout << result;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:22: error: 'INT_MAX' was not declared in this scope
    6 |         int result = INT_MAX;
      |                      ^~~~~~~
a.cc:2:1: note: 'INT_MAX' is defined in header '<climits>'; this is probably fixable by adding '#include <climits>'
    1 | #include <iostream>
  +++ |+#include <climits>
    2 |
Language: C

#include<stdio.h>
#include<math.h>
int main(){
  int l,r;
  int ans;
  scanf("%d %d",&l,&r);
  for(int i=L;i<R;i++){
    for(int j=i+1;j<=R;j++){
      if((i*j)%2019<ans){
        ans=(i*j)%2019
      } 
    }
  }
  printf("%d",ans);
return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:13: error: 'L' undeclared (first use in this function)
    7 |   for(int i=L;i<R;i++){
      |             ^
main.c:7:13: note: each undeclared identifier is reported only once for each function it appears in
main.c:7:17: error: 'R' undeclared (first use in this function)
    7 |   for(int i=L;i<R;i++){
      |                 ^
main.c:10:23: error: expected ';' before '}' token
   10 |         ans=(i*j)%2019
      |                       ^
      |                       ;
   11 |       }
      |       ~
Language: C++

#include<stdio.h>
int main()
{
    int L,R,i,j,k,u;
    u=2019;

    
    scanf("%d" "%d, &L,&R);
    // スペース区切りの整数の入力
    for(i=L;i<R;i++){
	for(j=i+1;j<=R;j++){
		i=i%2019;
		j=j%2019;
		k=I*J%2019;
		if(k<u)
			u=k;
			}}

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



Compiler output:
a.cc:8:16: warning: missing terminating " character
    8 |     scanf("%d" "%d, &L,&R);
      |                ^
a.cc:8:16: error: missing terminating " character
    8 |     scanf("%d" "%d, &L,&R);
      |                ^~~~~~~~~~~~
a.cc: In function 'int main()':
a.cc:8:15: error: expected ')' before 'for'
    8 |     scanf("%d" "%d, &L,&R);
      |          ~    ^
      |               )
    9 |     // スペース区切りの整数の入力
   10 |     for(i=L;i<R;i++){
      |     ~~~        
a.cc:10:20: error: expected ';' before ')' token
   10 |     for(i=L;i<R;i++){
      |                    ^
      |                    ;
Language: C++

#include <iostream>
#include <string>
#include <iomanip>
using namespace std;

int main(){
	long long int a,b;
	cin >> a >> b;

	long long int anser=2020*2020;

    for(int i=a;i<b;i++){
        ans=((i%2019)*(i+1)%2019)%2019;
        if(ans==0){
            cout << ans <<endl;
            return 0;
        }else{
            if(ans<anser){
                anser=ans;
            }
        }
    }
    cout << anser <<endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   13 |         ans=((i%2019)*(i+1)%2019)%2019;
      |         ^~~
      |         abs
Language: C++

#include<stdio.h>
int main()
{
    int L,R,i,j,k,u;
    u=2019

    
    scanf("%d" "%d, &L,&R);
    // スペース区切りの整数の入力
    for(i=L;i<R;i++){
	for(j=i+1;j<=R;j++){
		i=i%2019;
		j=j%2019;
		k=I*J%2019;
		if(k<u)
			u=k;
			}}

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

Compiler output:
a.cc:8:16: warning: missing terminating " character
    8 |     scanf("%d" "%d, &L,&R);
      |                ^
a.cc:8:16: error: missing terminating " character
    8 |     scanf("%d" "%d, &L,&R);
      |                ^~~~~~~~~~~~
a.cc: In function 'int main()':
a.cc:5:11: error: expected ';' before 'scanf'
    5 |     u=2019
      |           ^
      |           ;
......
    8 |     scanf("%d" "%d, &L,&R);
      |     ~~~~~  
a.cc:10:20: error: expected ';' before ')' token
   10 |     for(i=L;i<R;i++){
      |                    ^
      |                    ;
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int L, R, i, j;
  for(
  	for(i=L+1;i<=R;i++){
    i*L
    

Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: expected primary-expression before 'for'
    7 |         for(i=L+1;i<=R;i++){
      |         ^~~
a.cc:8:8: error: expected ';' at end of input
    8 |     i*L
      |        ^
      |        ;
a.cc:8:8: error: expected '}' at end of input
a.cc:7:28: note: to match this '{'
    7 |         for(i=L+1;i<=R;i++){
      |                            ^
a.cc:8:8: error: expected '}' at end of input
    8 |     i*L
      |        ^
a.cc:4:12: note: to match this '{'
    4 | int main() {
      |            ^
Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
#include <cmath>

using namespace std;

typedef long long ll;
const int mod = 2019;
const int INF = 1001001001;

int main(){
    int L, R;
    cin >> L >> R;
    
    if(R - L >= 2019){
        cout << 0 << endl;
        return 0;
    }
    for(int i = L; i <= R; ++i){
        if(i % 2019 == 0){
            cout << 0 << endl;
            return 0;
        }
    }
    
    int ans = INF;
    for(int i = L; i < R; ++i){
        ans = min(ans, (i * (i + 1)) % mod));
    }
    cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:29:44: error: expected ';' before ')' token
   29 |         ans = min(ans, (i * (i + 1)) % mod));
      |                                            ^
      |                                            ;
Language: Java

public class Main {
    public static void main(String[] args) {
        new Main().run();
    }

    private void run() {
        Scanner scanner = new Scanner(System.in);
        long L = scanner.nextInt();
        long R = scanner.nextInt();
        long ans = 0;
        long min = Long.MAX_VALUE;
        long i;
        long j;
        for (i = L; i < R; i++) {
            for (j = i + 1; j <= R; j++) {
                ans = (i * j) % 2019;
                if (min > ans) min = ans;
//                if(min == 0) break;
            }
        }

        System.out.println(min);
    }
}

Compiler output:
Main.java:7: error: cannot find symbol
        Scanner scanner = new Scanner(System.in);
        ^
  symbol:   class Scanner
  location: class Main
Main.java:7: error: cannot find symbol
        Scanner scanner = new Scanner(System.in);
                              ^
  symbol:   class Scanner
  location: class Main
2 errors
Language: C++

#include <iostream>
#include <stdio.h>
#include <vector>
#include <string>
#include <map>
#include <math.h>
#include <cmath>
#include <algorithm>
#include <queue>
#include <time.h>

#include <windows.h>

using namespace std;

#define INT_MAX 2147483647
typedef long long ll;

ll gcd(ll m, ll n);		//最大公倍数
ll lcm(ll m, ll n);		//最小公倍数

int main(void) {

	int ans = 0;

	ll l, r;
	cin >> l >> r;
	ans = INT_MAX;

	int t = 2019;

#if 0
	LARGE_INTEGER freq;
	QueryPerformanceFrequency(&freq);
	LARGE_INTEGER start, end;
	QueryPerformanceCounter(&start);

#endif

	for (ll i = l; i <= r - 1; i++) {
		int test = t;
		for (ll j = i + 1; j <= r; j++) {
			//ll tmp = i * j;
			ll tmp = i * j % t;
			if (tmp < ans) ans = tmp;
			test -= 1;
		}
		if (!test) break;
	}

#if 0
	QueryPerformanceCounter(&end);
	double time = static_cast<double>(end.QuadPart - start.QuadPart) * 1000.0 / freq.QuadPart;
	cout << time << endl;
#endif

	cout << ans << endl;

	return 0;

}

// 2番目から3要素だけ抜き出した部分文字列を取得する
//std::string result = s.substr(2, 3);  

#if 1
//最大公倍数
ll gcd(ll m, ll n)
{
	ll temp;
	while (m % n != 0)
	{
		temp = n;
		n = m % n;
		m = temp;
	}
	return n;
}

//最小公倍数
ll lcm(ll m, ll n)
{
	return m * n / gcd(m, n);
}
#endif


Compiler output:
a.cc:12:10: fatal error: windows.h: No such file or directory
   12 | #include <windows.h>
      |          ^~~~~~~~~~~
compilation terminated.
Language: Java

import java.util.*;

public class MainC {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		long L = sc.nextLong();
		long R = sc.nextLong();
		
		long L2019 = L%2019;
		long R2019 = R%2019;
		//System.out.println(L2019+" "+R2019);
		if(R2019 <= L2019) {
			System.out.println(0);
			System.exit(0);
		}
		
		
		long min1 = 2018;
		long min2 = 2018;
		//System.out.println(L2019+" "+R2019);
		for(long i= L2019; i <= R2019; i++) {
			long num = i % 2019;
			if(num <= min1) {
				min2 = min1;
				min1 = num;
				if(min1 == 0)break;
				//System.out.println(i+"minA"+min1+" "+min2);
			} else if (num < min2){
				min2 = num;
				//System.out.println(i+ "minB"+min1+" "+min2);
			} else {
				continue;
			}
		}
		
		System.out.println((min1 * min2) % 2019);
	}

}


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

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

int main() {
  
  int64_t L,R;
  int ans=2018;
  cin >> L >> R;
  
  for(int64_t i=L;i<=R-1;i++){
    for(int64_t j=i+1;j<=R;j++){
      int a;
      a=(i%2019)*(j%2019))%2019;
      if(a<ans){
        ans = a;
      }
    }
  }
  
  cout << ans << endl;
        
      
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:26: error: expected ';' before ')' token
   13 |       a=(i%2019)*(j%2019))%2019;
      |                          ^
      |                          ;
Language: C++

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

#define EPS (1e-7)
#define INF (1e9)
#define PI (acos(-1))
#define MAXN 100001
#define MOD 2019

int gcd(int a, int b) {
    if(a < b) swap(a, b);
    if (b==0) return a;
    return gcd(b, a%b);

    ll minv = ll( INF );

    for(ll i=l; i<r; i++) {
        if (minv > i%MOD) minv = i%MOD;
    }

    cout << minv * (minv + 1) << endl;
}


Compiler output:
a.cc: In function 'int gcd(int, int)':
a.cc:18:14: error: 'l' was not declared in this scope
   18 |     for(ll i=l; i<r; i++) {
      |              ^
a.cc:18:19: error: 'r' was not declared in this scope
   18 |     for(ll i=l; i<r; i++) {
      |                   ^
Language: C++

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

int main(){
    int L, R;
    cin >> L >> R;
    int l = L % 2019;
    int r = R % 2019;
    int N = R - L + 1;
    if (N >= 2019){
        cout << 0 << endl;
    }
    else {
        vector<int> S(N);
        for (int i = 0; i < N; i++){
            S.at(i) = (L + i) % 2019;
    }
    sort(S.begin(), S.end());
    unique(S.begin(), S.end());
    S.erase(S.begin(, S.end());
    cout << S.at(0) * S.at(1) << endl;
    }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:11: warning: ignoring return value of '_FIter std::unique(_FIter, _FIter) [with _FIter = __gnu_cxx::__normal_iterator<int*, vector<int> >]', declared with attribute 'nodiscard' [-Wunused-result]
   19 |     unique(S.begin(), S.end());
      |     ~~~~~~^~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:61,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algo.h:891:5: note: declared here
  891 |     unique(_ForwardIterator __first, _ForwardIterator __last)
      |     ^~~~~~
a.cc:20:21: error: expected primary-expression before ',' token
   20 |     S.erase(S.begin(, S.end());
      |                     ^
Language: Java

import java.util.Scanner;
public class　Main{
	public static void main(String[] args) {
		Scanner s = new Scanner(System.in);
		long l, r;
		l = s.nextInt();
		r = s.nextInt();
		long ans = Integer.MAX_VALUE;
		for (long i = l; i <= r; i++) {
			for (long j = i+1; j <= r; j++) {
				ans = Math.min(ans, (i * j) % 2019);
			}
		}
		System.out.println(ans);
	}
}

Compiler output:
Main.java:2: error: illegal character: '\u3000'
public class?Main{
            ^
1 error
Language: C++

#include<bits/stdc++.h>
using namespace std;
long long f(long long l,long long r){
	l%=2019,r%=2019;
	long long  f=max(l,r),e=min(l,r);
	long long ans=1e9;
	for(long long  i=e;i<=f;i++){
		for(long long  j=e+1;j<=f;j++){
		ans=min(ans,i*j);
		}
	
	}
	return ans;

}
int main(){

long long l,r;
while(cin>>l>>r){
long long ans=0;
if(r-l>2018)ans=0;a
else ans=f(l,r);
printf("%lld\n",ans);

}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:21:19: error: 'a' was not declared in this scope
   21 | if(r-l>2018)ans=0;a
      |                   ^
Language: C++

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

int mid(int a,int b,int c){
  return a+b+c-max(max(a,b),c)-min(min(a,b),c);
}

int main(){
  long long L,R;
  cin >> L >> R;
  if(R % 2019 == 0 || L % 2019 == 0 ){
    cout << 0 << endl;
  }
  else {
  if(R - L + 1 >= 2019){
    cout << 0 << endl;
  }
  if(R - L + 1 < 2019) {
    bool W = false,Q = true;
    for(int i = L ;i < R + 1;i++){
      if(i % 2019 == 0){
        W = true;
        Q = false;
        break;
      }
    }
      if(W) cout << 0 << endl;
      if(Q)
        cout << ((L *(L + 1)) % 2019 << endl;
  }
  }
}
 

Compiler output:
a.cc: In function 'int main()':
a.cc:29:38: error: invalid operands of types 'long long int' and '<unresolved overloaded function type>' to binary 'operator<<'
   29 |         cout << ((L *(L + 1)) % 2019 << endl;
      |                  ~~~~~~~~~~~~~~~~~~~~^~~~~~~
a.cc:29:45: error: expected ')' before ';' token
   29 |         cout << ((L *(L + 1)) % 2019 << endl;
      |                 ~                           ^
      |                                             )
Language: C++

#include<stdio.h>
int main()
{
  double L,R,i;
  int min=2018,a;
  scanf("%lf %lf",&L,&R);
  for(i=L;i<R;i++)
  {
    a=i%2019;//あまりの最小値をだす．その時のi付近が答え
    if(a<min)
    {
      min=a;
    }
    if(a==0)break;
  }
  if(min!=0)
  {
    printf("%d",min*(min+1));
  }
  else
  {
    printf("0");
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:8: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    9 |     a=i%2019;//あまりの最小値をだす．その時のi付近が答え
      |       ~^~~~~
      |       | |
      |       | int
      |       double
Language: C++

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

int main(){
    long long int l, r, m, tmp;
    cin >> l >> r;
    l_mod = l / 2019;
    r_mod = r / 2019;
    if(l_mod != r_mod) m = 0;
    else if(l % 2019 == 0 || r % 2019 == 0) m = 0;
    else {
        for(int i = l; i < r; i++){
            for(int j = i + 1; j <= r; j++){
                tmp = (i * j) % 2019;
                m = min(m, tmp);
            }
        }
    }
    cout << m << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:5: error: 'l_mod' was not declared in this scope
    7 |     l_mod = l / 2019;
      |     ^~~~~
a.cc:8:5: error: 'r_mod' was not declared in this scope
    8 |     r_mod = r / 2019;
      |     ^~~~~
Language: C++

#pr#pragma GCC optimize(2)
#include<bits/stdc++.h>
using namespace std;
int main()
{
	int l,r,mins=2020;
	cin>>l>>r;
	if(l-r+1>=2019)
	{
		cout<<0;
		return 0;
	}
	long long x;
	for(int i=l;i<=r;i++)
	{
		for(int j=l;j<=r;j++)
		{
			if((i%2019)==0||(j%2019)==0)
			{
				cout<<0;
				return 0;
			}
			if(i!=j)
			{
				x=i*j;
				if((x%2019)<mins)
				mins=(x%2019);
				if(mins==0)
				{
					cout<<0;
					return 0;
				}
			}
		}
	}
	cout<<mins;
}

Compiler output:
a.cc:1:2: error: invalid preprocessing directive #pr
    1 | #pr#pragma GCC optimize(2)
      |  ^~
Language: C++

#include <iostream>
using namespace std;

int main(int argc, const char * argv[]) {
    int L, R;
    cin >> L;
    cin >> R;
    
    int mod = INT_MAX;
    int number = 0;
    for (int i = L; i <= R; i++) {
        int tmp = i % 2019;
        if (mod > tmp) {
            mod = tmp;
            number = i;
        }
    }
    
    if (number == R) { number--;}


    cout << number * (number + 1) % 2019 << endl;
    
    return 0;
}

Compiler output:
a.cc: In function 'int main(int, const char**)':
a.cc:9:15: error: 'INT_MAX' was not declared in this scope
    9 |     int mod = INT_MAX;
      |               ^~~~~~~
a.cc:2:1: note: 'INT_MAX' is defined in header '<climits>'; this is probably fixable by adding '#include <climits>'
    1 | #include <iostream>
  +++ |+#include <climits>
    2 | using namespace std;
Language: C++

#include <iostream>
#include <math.h>

using namespace std;

int main()
{
    unsigned int L,R;
    unsigned long long ans = 2*pow(10, 9.0);
    cin >> L >> R;
    for(int i=L; i<=R-1; i++){
        for(int j=L+1; j<=R; j++){
            //cout << i << "," << j << endl;
            if(i>=j) continue;
            ans = min(ans, (i*j)%2019);
        }
    }

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

Compiler output:
a.cc: In function 'int main()':
a.cc:15:22: error: no matching function for call to 'min(long long unsigned int&, int)'
   15 |             ans = min(ans, (i*j)%2019);
      |                   ~~~^~~~~~~~~~~~~~~~~
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: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:   template argument deduction/substitution failed:
a.cc:15:22: note:   deduced conflicting types for parameter 'const _Tp' ('long long unsigned int' and 'int')
   15 |             ans = min(ans, (i*j)%2019);
      |                   ~~~^~~~~~~~~~~~~~~~~
/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, 2 provided
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int MOD = 2019;

int main()
{
  ll l,r; cin >> l >> r;
  ll diff = r - l;
  l = l % MOD; r = r % MOD;

  if (diff >= MOD || r <= l) {
    cout << "0" << endl;
  } else (l <= MOD - r - 1) {
    cout << (l*(l+1))%MOD << endl;
  } else {
    cout << (r*(r-1))%MOD << endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:28: error: expected ';' before '{' token
   14 |   } else (l <= MOD - r - 1) {
      |                            ^~
      |                            ;
a.cc:16:5: error: 'else' without a previous 'if'
   16 |   } else {
      |     ^~~~
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main() {
    long long l, r;
    cin >> l >> r;
    long long dis = r - l;
    if(dis > 2019){
        cout << 1 << endl;
    }
    else if(dis > 4038){
        cout << 0 << endl;
    }
    else{
    l = l % 2019;
    r = r % 2019;
    
    long long inf = pow(10, 18);
    long long ans = inf;
    
    if(l > r){
        for(long long i = 0; i < r; i++) {
        for(long long j = (i+1); j <= r; j++) {
            ans = min(ans, i * j % 2019);
        }
    }
  cout << ans << endl;
    }
    else if{

    for(long long i = l; i < r; i++) {
        for(long long j = (i+1); j <= r; j++) {
            ans = min(ans, i * j % 2019);
        }
    }
  cout << ans << endl;
    }
}

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:30:12: error: expected '(' before '{' token
   30 |     else if{
      |            ^
      |            (
Language: C++

#include <bits/stdc++.h>
#include <cstdio>
#include <cstring>
#include <cstdlib>

#define FASTIO ios::sync_with_stdio(0); cin.tie(0);
#define show(x) cout << #x << " = " << x << "\n"
#define mem( a , b ) memset( a , b , sizeof a )
#define popcnt(x) __builtin_popcount(x)
#define all(x) x.begin() , x.end()
#define SZ(a) (int)a.size()
#define ll  long long
#define ld  long double
#define vii vector  <ll>
#define dqi deque   <ll>
#define sii set     <ll>
#define vpi vector  <pii>
#define mii map     <ll,ll>
#define pii pair    <ll,ll>
#define pi pair     <int,int>
#define vss vector  <string>
#define pb  push_back
#define F   first
#define S   second
#define L   length()
#define PI  3.141592654
#define OO (ll)1e18
#define mod(x,m) (x%m + m )%m
using namespace std;

pii swapii( pii pr ){ return { pr.S , pr.F }; }
int dx[] = {  0 ,  0 , -1 , +1 , -1 , +1 , -1 , +1 };
int dy[] = { -1 , +1 ,  0 ,  0 , -1 , +1 , +1 , -1 };

const ll MOD = 1e9 + 7;
const ll MAX = 2e7 + 9;

ll x ,y; ll d = 2019;

isOk( ll n , ll k )
{
    ll nwN = x , nwK = y;

    ll nMod = x%d;
    nwN += n - nMod;

    ll kMod = y%d;
    nwK += k - kMod;

    if ( nwN < nwK && nwN >= x && nwN <= y && nwK >= x && nwK <= y  ) return 1;
    return 0;
}

int main()
{
    FASTIO

    cin >> x >> y;
    
    ll mn = OO;
    for ( int i = 1; i <= 2019; ++i )
        for ( int j = i+1; j <= 2019; ++j )
        {
            if ( isOk(i , j) )
            {
                mn = min( mn , (i*j)%d );
            }
        }

    cout << mn;
    return 0;
}


Compiler output:
a.cc:40:1: error: ISO C++ forbids declaration of 'isOk' with no type [-fpermissive]
   40 | isOk( ll n , ll k )
      | ^~~~
Language: C++

#include <bits/stdc++.h>
#include <cstdio>
#include <cstring>
#include <cstdlib>

#define FASTIO ios::sync_with_stdio(0); cin.tie(0);
#define show(x) cout << #x << " = " << x << "\n"
#define mem( a , b ) memset( a , b , sizeof a )
#define popcnt(x) __builtin_popcount(x)
#define all(x) x.begin() , x.end()
#define SZ(a) (int)a.size()
#define ll  long long
#define ld  long double
#define vii vector  <ll>
#define dqi deque   <ll>
#define sii set     <ll>
#define vpi vector  <pii>
#define mii map     <ll,ll>
#define pii pair    <ll,ll>
#define pi pair     <int,int>
#define vss vector  <string>
#define pb  push_back
#define F   first
#define S   second
#define L   length()
#define PI  3.141592654
#define OO (ll)1e18
#define mod(x,m) (x%m + m )%m
using namespace std;
void ONLINE__JUDGE();

pii swapii( pii pr ){ return { pr.S , pr.F }; }
int dx[] = {  0 ,  0 , -1 , +1 , -1 , +1 , -1 , +1 };
int dy[] = { -1 , +1 ,  0 ,  0 , -1 , +1 , +1 , -1 };

const ll MOD = 1e9 + 7;
const ll MAX = 2e7 + 9;

ll x ,y; ll d = 2019;

isOk( ll n , ll k )
{
    ll nwN = x , nwK = y;

    ll nMod = x%d;
    nwN += n - nMod;

    ll kMod = y%d;
    nwK += k - kMod;

    if ( nwN < nwK && nwN >= x && nwN <= y && nwK >= x && nwK <= y  ) return 1;
    return 0;
}

int main()
{
    FASTIO //ONLINE__JUDGE();

    cin >> x >> y;
    
    ll mn = OO;
    for ( int i = 1; i <= 2019; ++i )
        for ( int j = i+1; j <= 2019; ++j )
        {
            if ( isOk(i , j) )
            {
                mn = min( mn , (i*j)%d );
            }
        }

    cout << mn;
    return 0;
}


void ONLINE__JUDGE()
{
    #ifndef ONLINE_JUDGE
    freopen( "inp.c"         , "r" , stdin  );
    //freopen( "OutPut.txt"   , "w" , stdout );
    #endif // ONLINE_JUDGE
}



Compiler output:
a.cc:41:1: error: ISO C++ forbids declaration of 'isOk' with no type [-fpermissive]
   41 | isOk( ll n , ll k )
      | ^~~~
Language: C++

#include <bits/stdc++.h>
#include <cstdio>
#include <cstring>
#include <cstdlib>

#define FASTIO ios::sync_with_stdio(0); cin.tie(0);
#define show(x) cout << #x << " = " << x << "\n"
#define mem( a , b ) memset( a , b , sizeof a )
#define popcnt(x) __builtin_popcount(x)
#define all(x) x.begin() , x.end()
#define SZ(a) (int)a.size()
#define ll  long long
#define ld  long double
#define vii vector  <ll>
#define dqi deque   <ll>
#define sii set     <ll>
#define vpi vector  <pii>
#define mii map     <ll,ll>
#define pii pair    <ll,ll>
#define pi pair     <int,int>
#define vss vector  <string>
#define pb  push_back
#define F   first
#define S   second
#define L   length()
#define PI  3.141592654
#define OO (ll)1e18
#define mod(x,m) (x%m + m )%m
using namespace std;
void ONLINE__JUDGE();

pii swapii( pii pr ){ return { pr.S , pr.F }; }
int dx[] = {  0 ,  0 , -1 , +1 , -1 , +1 , -1 , +1 };
int dy[] = { -1 , +1 ,  0 ,  0 , -1 , +1 , +1 , -1 };

const ll MOD = 1e9 + 7;
const ll MAX = 2e7 + 9;

ll x ,y; ll d = 2019;

isOk( ll n , ll k )
{
    ll nwN = x , nwK = y;

    ll nMod = x%d;
    nwN += n - nMod;

    ll kMod = y%d;
    nwK += k - kMod;

    if ( nwN < nwK && nwN >= x && nwN <= y && nwK >= x && nwK <= y  ) return 1;
    return 0;
}

int main()
{
    FASTIO //ONLINE__JUDGE();

    cin >> x >> y;

    //return cout << isOk( 2 , 5 ) , 0;
    ll mn = OO;
    for ( int i = 1; i <= 2019; ++i )
        for ( int j = i+1; j <= 2019; ++j )
        {
            if ( isOk(i , j) )
            {
                mn = min( mn , (i*j)%d );
            }
        }

    cout << mn;
    return 0;
}


void ONLINE__JUDGE()
{
    #ifndef ONLINE_JUDGE
    freopen( "inp.c"         , "r" , stdin  );
    //freopen( "OutPut.txt"   , "w" , stdout );
    #endif // ONLINE_JUDGE
}



Compiler output:
a.cc:41:1: error: ISO C++ forbids declaration of 'isOk' with no type [-fpermissive]
   41 | isOk( ll n , ll k )
      | ^~~~
Language: C++

#include <bits/stdc++.h>

using namespace std;
long long int fun(int l , int r );
int main()
{
    ios :: sync_with_stdio(false);
    cin.tie(0);

     long long int l,r;
    
    cin >>l >>r;
    
    cout <<fun(l,r);

return 0;
}
long long int fun(long long int l , long long int r )
{ 
   long long int k=(l%2019)*((l+1)%2019);
    for(int i=l;i<=r;i++)
    {
        for(int j=i+1;j<=r;j++)
        {
         
           long long int t=(i%2019)*(j%2019);
           
           if(t>k)
           {
               continue;
           }
           else
           {   
               return t;
           }
        }
    }
}


Compiler output:
a.cc: In function 'long long int fun(long long int, long long int)':
a.cc:38:1: warning: control reaches end of non-void function [-Wreturn-type]
   38 | }
      | ^
/usr/bin/ld: /tmp/cceBpQLu.o: in function `main':
a.cc:(.text+0x5d): undefined reference to `fun(int, int)'
collect2: error: ld returned 1 exit status
Language: C++

#include<iostream>

using namespace std;

long long L,R,y;
int main(){
  int l,r,x=2100;

  cin>>L>>R;

l=L%2019;
r=R%2019;


if(r<=l){
  cout<<0;
}else{
  for(int i=l;i<r;i++){
    for(int j=i+1;j<r+1;j++){
      y=i*j;
      x=min(x,y%2019);
    }
  }
  cout<<x;
}


  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:12: error: no matching function for call to 'min(int&, long long int)'
   21 |       x=min(x,y%2019);
      |         ~~~^~~~~~~~~~
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: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:   template argument deduction/substitution failed:
a.cc:21:12: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   21 |       x=min(x,y%2019);
      |         ~~~^~~~~~~~~~
/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, 2 provided
Language: C++

#include <iostream>

#define CONSTANT 2019

using namespace std;

int main()
{
    unsigned long l,r;
    unsigned long bufm1,bufm2;
    unsigned long bufd1;

    cin >> l;
    cin >> r;

    bufd1 = l / CONSTANT;
    bufd2 = r / CONSTANT;

    if(bufd2 - bufd1 >= 1){
        cout << 0 << endl;
    }
    else{
        bufm1 = l % CONSTANT;
        cout << bufm1 * (bufm1+1) << endl;
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:5: error: 'bufd2' was not declared in this scope; did you mean 'bufd1'?
   17 |     bufd2 = r / CONSTANT;
      |     ^~~~~
      |     bufd1
Language: Java

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int l = scanner.nextInt();
        int r = scanner.nextInt();
        int ml = l % 2019;
        int mr = r % 2019;

        if (r - l + 1 >= 2019) {
            System.out.println(0);
        } else if (ml > mr) {
            System.out.println(0);
        } else {
            for(int i =ml ; i< mr;i++) {
                if (i % 673 == 0) {
                    if (mr - ml + 1 >= 3 || ml % 3 == 0 || mr % 3 == 0) {
                        System.out.println(0);
                        return;
                    }
                }
            }
                System.out.println(ml * (ml + 1) % 2019);
            }
        }


    }
}

Compiler output:
Main.java:30: error: class, interface, enum, or record expected
}
^
1 error
Language: Java

import java.util.*;

public class MainC {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		long L = sc.nextLong();
		long R = sc.nextLong();
		
		long L2019 = L%2019;
		long R2019 = R%2019;
		//System.out.println(L2019+" "+R2019);
		if(L2019 >= R2019) {
			System.out.println((L2019* R2019) % 2019);
			System.exit(0);
		}
		
		/*
		long min1 = 2018;
		long min2 = 2018;
		System.out.println(L2019+" "+R2019);
		for(long i= L2019; i <= R2019; i++) {
			long num = i % 2019;
			if(num <= min1) {
				min2 = min1;
				min1 = num;
				
				//System.out.println(i+"minA"+min1+" "+min2);
			} else if (num < min2){
				min2 = num;
				//System.out.println(i+ "minB"+min1+" "+min2);
			} else {
				continue;
			}
		}
		*/
		System.out.println((L2019 * (L2019+1)) % 2019);
	}

}

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

#include <bits/stdc++.h>
using namespace std;
const int MOD=1000*1000*1000+7;
int main()
{
	long long l, r;
	cin>>l>>r;
	for(long long i=l; i<=l+2023; i++)
	{
		long long x=i%2019, a=i*(i+1))%2019;
		if(x==0&&i+1<=r){cout<<a<<endl;return 0;}
	}
	long long  b=(l*(l+1))%2019;
	cout<<b<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:46: error: expected ',' or ';' before ')' token
   10 |                 long long x=i%2019, a=i*(i+1))%2019;
      |                                              ^
Language: C++

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

int main(){
	int a, b;
	cin>>a>>b;
	
	if(b-a>2018)
		cout<<0;
	else{
		int ans=INT_MAX;
		a%=2019;
	b%=2019;
	for(int i=a;i<b;i++)
		ans = min(ans , (i*(i+1))%2019;
	cout<<ans<<endl;
	}
	


	return 0;
}
                  

Compiler output:
a.cc: In function 'int main()':
a.cc:15:47: error: expected ')' before ';' token
   15 |                 ans = min(ans , (i*(i+1))%2019;
      |                          ~                    ^
      |                                               )
Language: C++

#include <bits/stdc++.h>
#include <stdlib.h>
#include <numeric>
#include <math.h>
using namespace std;
int main(){
  	int L, R, i, min, j;
    cin >> L >>R;
    La=L%2019;
	if(R-L==1){
        cout<<La*R%2019<<endl;
    }else{
        min=La*(L+1)%2019;
        for(i=0; L+i<R; i++){
            for(j=1; L+j<=R; j++){
                if((L+i)%2019*(L+j)%2019<min){
                    min=(L+i)%2019*(L+j)%2019;
                }
            }
        }
        cout<<min<<endl;
    }
 
 
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:5: error: 'La' was not declared in this scope; did you mean 'L'?
    9 |     La=L%2019;
      |     ^~
      |     L
Language: C++

using namespace std;

int main() {
    long long l, r;
    cin >> l >> r;
    long long dis = r - l;
    if(dis > 2019){
        cout << 1 << endl;
    }
    else if(dis > 4038){
        cout << 0 << endl;
    }
    else{
    l = l % 2019;
    r = r % 2019;
    
    long long inf = pow(10, 18);
    long long ans = inf;
    

    for(long long i = l; i < r; i++) {
        for(long long j = (i+1); j <= r; j++) {
            ans = min(ans, i * j % 2019);
        }
    }
  cout << ans << endl;
    }

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:5: error: 'cin' was not declared in this scope
    5 |     cin >> l >> r;
      |     ^~~
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:8:9: error: 'cout' was not declared in this scope
    8 |         cout << 1 << endl;
      |         ^~~~
a.cc:8:9: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:8:22: error: 'endl' was not declared in this scope
    8 |         cout << 1 << 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;
a.cc:11:9: error: 'cout' was not declared in this scope
   11 |         cout << 0 << endl;
      |         ^~~~
a.cc:11:9: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:11:22: error: 'endl' was not declared in this scope
   11 |         cout << 0 << endl;
      |                      ^~~~
a.cc:11:22: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
a.cc:17:21: error: 'pow' was not declared in this scope
   17 |     long long inf = pow(10, 18);
      |                     ^~~
a.cc:23:19: error: 'min' was not declared in this scope; did you mean 'main'?
   23 |             ans = min(ans, i * j % 2019);
      |                   ^~~
      |                   main
a.cc:26:3: error: 'cout' was not declared in this scope
   26 |   cout << ans << endl;
      |   ^~~~
a.cc:26:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:26:18: error: 'endl' was not declared in this scope
   26 |   cout << ans << endl;
      |                  ^~~~
a.cc:26:18: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
Language: C++

#include <iostream>

using namespace std;

int main() {
    int L, R;
    int min = 2020;

    cin >> L >> R;
    while(L>2019) {
        L -= 2019;
        R -= 2019;
    }
    for(int i=L; i<R; i++) {
        for(int j=i+1; j<=R; j++) {
            if((i*j)%2019 < min) min = (i*J)%2019;
        }
    }
    cout << min << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:43: error: 'J' was not declared in this scope
   16 |             if((i*j)%2019 < min) min = (i*J)%2019;
      |                                           ^
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main() {
    long long l, r;
    cin >> l >> r;
    long long dis = r - l;
    if(dis > 2019){
        cout << 1 << endl;
    }
    else if(dis > 4038){
        cout << 0 << endl;
    }
    else{
    l = l % 2019;
    r = r % 2019;
    
    if()


    long long inf = pow(10, 18);
    long long ans = inf;
    

    for(long long i = l; i < r; i++) {
        for(long long j = (i+1); j <= r; j++) {
            ans = min(ans, i * j % 2019);
        }
    }
  cout << ans << endl;
    }

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:19:8: error: expected primary-expression before ')' token
   19 |     if()
      |        ^
a.cc:23:21: error: 'inf' was not declared in this scope; did you mean 'ynf'?
   23 |     long long ans = inf;
      |                     ^~~
      |                     ynf
Language: C

#include <stdio.h>
int main(){
int L,R,i,j,x=0,t[x];
L<=R-1;
t[0]==L;
x<j-i+1;
scanf("%d %d",&L,&R);
L<=i&&j<=R&&i<j;
i=(i*j);
i%=2019;
i=t[x];
do
{printf("%d",t[x]);
}
while t[x]<t[x+1];
}

Compiler output:
main.c: In function 'main':
main.c:15:7: error: expected '(' before 't'
   15 | while t[x]<t[x+1];
      |       ^
      |       (