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

//In the name of God:)
#include <bits/stdc++.h>
#define pb push_back
#define F first
#define S second
#define pii pair<int,int>
#define ll long long int
#define fast  ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
using namespace std;
const int MAXN = 2e5 + 10;
const int MOD = 1e9 + 7;

int main(){

    ll ans = 0 , n , k;
    scanf("%lld%lld" , &n , &k);
    for(ll i = k ; i <= n+1 ; i++){
        ans = (ans + 1 +((i * (2*n-i+1) / 2) - ((i-1) * i / 2 ))) % MOD;
        // cout<<i<<' '<<i * (2*n-i+1) / 2<<endl;
    }
    printf("%lld\n" , ans);
}


Compiler output:
main.c:2:10: fatal error: bits/stdc++.h: No such file or directory
    2 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: Java

import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc =new Scanner(System.in);
    long N =sc.nextLong();
    long K =sc.nextLong();
    long y=0;
    for(int i=0;i<=N-K;i++){
      y=y+(N-i)*(N-K+1-i);
    y=y%1000000007}
    if(y==0){System.out.println(1);System.exit(0);}
    System.out.println(y+N-K+1);
  }
}


Compiler output:
Main.java:10: error: ';' expected
    y=y%1000000007}
                  ^
1 error
Language: C++

/*
	watch me go
*/
#pragma GCC optimize("O3")
//#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define d long double
#define pii pair<int,int>
#define pb push_back
#define inf (int)LLONG_MAX
#define init(x,a) memset(x,a,sizeof(x))
#define all(c) c.begin(),c.end()
int const mod1=998244353;
int const mod=1000000007;
int toint(const string &s) {stringstream ss; ss << s; int x; ss >> x; return x;}
string tostring ( int number ) {stringstream ss; ss << number; return ss.str();}
#define out(x) cout<<#x<<" = "<<" "<<x<<"\n";
#define trace1(x)                cerr<<#x<<": "<<x<<endl
#define trace2(x, y)             cerr<<#x<<": "<<x<<" | "<<#y<<": "<<y<<endl
#define trace3(x, y, z)          cerr<<#x<<":" <<x<<" | "<<#y<<": "<<y<<" | "<<#z<<": "<<z<<endl
 #define haha ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
// *** Using PBDS ***
// typedef tree<long long, null_type, less<long long>, rb_tree_tag, 
//              tree_order_statistics_node_update> 
//                 os; 
// *** Using PBDS ***
int modexp(int x, int n){
	if(n==0){
		return 1;
	}
	else if(n&1){
		return (modexp((x*x)%mod, n/2)%mod * x%mod)%mod;
	}
	else{
		return (modexp((x*x)%mod, n/2)%mod);
	}
}
 
int modinv(int n)
{
	return modexp(n,mod-2);
}
bool comp(pii a,pii b)
{
    if(a.first==b.first)
    return a.second<b.second;
    return a.first>b.first;
    
}

signed main() 
{
    haha
    int n,t,m,i,f=0,j,k,x,r;
    int ans=0;
    cin >> n >> k ;
    if(n==1)
    {
        if(k==1) cout << 2 ;
        else cout << 1 ;
        return 0 ;
    }
    int temp;
    for(i=k;i<=n+1;++i)
    {
        temp = (i*(n+1-i)+1)%mod ;
        //cout << temp << endl ;
        //temp++;
        //temp%=P;
        ans=(ans+temp)%mod;
        //cout << ans << endl ;
        
    }
    cout << ans%mod ;
    
    
}



Compiler output:
In file included from /usr/include/c++/14/string:43,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:8:
/usr/include/c++/14/bits/allocator.h: In destructor 'std::__cxx11::basic_string<char>::_Alloc_hider::~_Alloc_hider()':
/usr/include/c++/14/bits/allocator.h:182:7: error: inlining failed in call to 'always_inline' 'std::allocator< <template-parameter-1-1> >::~allocator() noexcept [with _Tp = char]': target specific option mismatch
  182 |       ~allocator() _GLIBCXX_NOTHROW { }
      |       ^
In file included from /usr/include/c++/14/string:54:
/usr/include/c++/14/bits/basic_string.h:186:14: note: called from here
  186 |       struct _Alloc_hider : allocator_type // TODO check __is_final
      |              ^~~~~~~~~~~~
Language: C++

#include<bits/stdc++.h>

using namespace std;

int main(){
  int n,k;
  cin >> n >> k;
  
  int sum=0;
  for(int i=k;i<n+2;i++)
    sum+=i*(n-(i-1))+1;
  
  cout << sum%(10e9+7) << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:14: error: invalid operands of types 'int' and 'double' to binary 'operator%'
   13 |   cout << sum%(10e9+7) << endl;
      |           ~~~^~~~~~~~~
      |           |        |
      |           int      double
Language: C++

#include <bits/stdc++.h>
using namespace std;
const int mod = 1000000007;

int main() {
  int n, k;
  cin >> n >> k;
  long int ans = 0;
  for(int i = k; i <= n+1; i++){
    ans=(ans+i(n-i+1)+1)%mod;
  }
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:15: error: 'i' cannot be used as a function
   10 |     ans=(ans+i(n-i+1)+1)%mod;
      |              ~^~~~~~~
Language: C

#include <bits/stdc++.h>

#include <iostream>
//#include <algorithm>
// #include <iomanip>
#define ll long long
#define map unordered_map
#define set unordered_set

using namespace std;

const ll MOD = 1000000007;
const ll INF = (1LL << 62);

ll dp[100005][10];

int main() {
  ll N, K;
  scanf("%lld %lld", &N, &K);

  ll ans = 0;
  for (ll num = K; num <= N + 1; num++) {
    ll start = (0 + num - 1) * num / 2;
    ll end = (N + N - (num - 1)) * num / 2;

    ll plus = (end - start) + 1;

    ans = (ans + plus) % MOD;
  }
  cout << ans << endl;
}


Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

using namespace std;
#include <bits/stdc++.h>
#define rep(i, s) for (int i = 0; i < s; ++i)
#define repr(i, n) for(int i = n; i >= 0; i--)
#define FOR(i, m, n) for(int i = m; i < n; i++)
#define all(v) (v.begin(), v.end())
#define EACH(i, s) for (__typeof__((s).begin()) i = (s).begin(); i != (s).end(); ++i)
#define VEC(a, n) vector<int>a(n)
#define VECV(a,n,m) vector<vector<int>> a(n, vector<int>(m));
#define PQ(a) priority_queue<int>a
#define PQmin(a) priority_queue< int, :vector<int>, greater<int> >a
#define PAIR pair<int, int>
typedef long long ll;
typedef pair<ll, ll> l_l;
typedef pair<int, int> i_i;
#define EPS (1e-7)
#define INF (1e10)
#define PI (acos(-1))
const ll mod = 1000000007;
bool f(string s){
  bool ans=true;
  rep(i,s.size()/2){
    if(s[i]!=s[s.size()/2+i]){
      ans=false;
      break;
    }
  }
  return ans;
}


int main(){
  ios::sync_with_stdio(false);
  cin.tie(0);
  int N,K;
  cin>>N>>K;
  ll max=0;
  ll min=0;
  ll ans=0;
  FOR(i,0,K){
    min+=i;
    max+=N-i;
  }
  ans+=max-min+1;
  FOR(i,K,N+1){
    min+=i;
    max+=N-i;
    ans+=max-min+1;
    ans%=mod;
  }
  cout<<ans<<endl;
}
  

Compiler output:
main.c:1:1: error: unknown type name 'using'
    1 | using namespace std;
      | ^~~~~
main.c:1:17: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'std'
    1 | using namespace std;
      |                 ^~~
main.c:2:10: fatal error: bits/stdc++.h: No such file or directory
    2 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: Java

import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc =new Scanner(System.in);
    int N =sc.nextInt();
    int K =sc.nextInt();
    int x=N;int y=0;int z=0;
    for(int i=0;i<=N-K;i++){
      y=y+(N-i)*(N-K+1-i);
    y=y%1000000007}
    if(y==0){System.out.println(1);System.exit(0);}
    System.out.println(y+N-K+1);
  }
}

Compiler output:
Main.java:10: error: ';' expected
    y=y%1000000007}
                  ^
1 error
Language: C

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define mod 1000000007
 
int main()
{

    ll ans=0,n,k,temp=0,i;
    cin >> n >> k ;
    if(n==1)
    {
        if(k==1) 
            cout << 2 ;
        else 
            cout << 1 ;
    }
    for(i=k;i<=n+1;++i)
    {
        temp = (i*(n+1-i)+1)%mod ;
        ans=(ans+temp)%mod;
    }
    cout << ans%mod ;
}
 

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<stdio.h>
int main(void)
{
	unsigned long int a, b, c, d;
	unsigned int i;
	unsigned long int sum = 0;

	scanf("%ld", &a);
	scanf("%ld", &b);
	for (i = b; i <= (a + 1); i++) {
		c = 0;
		d = 0;
		for (j = 0; j < i; j++) {
			c = c + j;
			d = d + (a + 1 - j);
		}

		sum = sum + d - c + 1;
	}

  	printf("%ld", sum);
  
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:13:22: error: 'j' undeclared (first use in this function)
   13 |                 for (j = 0; j < i; j++) {
      |                      ^
main.c:13:22: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include <bits/stdc++.h>

using namespace std;
const long long MOD = 1e9+7;
int main(){
  
  long long N, K, value;
  
  cin>>N>>K;
  vector<long long> powTen(111);
  powTen[0]=1;
  for(int i = 0; i < 110; i++){
    
   	powTen[i+1] = powTen[i]*10;
    powTen[i+1] %= MOD;
    
  }
  int differentValues = 0;
  for(int i = K; i <= N; i++){
    minVal = i*(i-1)/2;
    maxVal = N * (N-1)/2 - (N-i+1)*(N-i)/2;
  	differentValues = differentValues + maxVal - minVal + 1;
    differentValues %= MOD;
  }
  cout<<differentValues;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:5: error: 'minVal' was not declared in this scope
   20 |     minVal = i*(i-1)/2;
      |     ^~~~~~
a.cc:21:5: error: 'maxVal' was not declared in this scope
   21 |     maxVal = N * (N-1)/2 - (N-i+1)*(N-i)/2;
      |     ^~~~~~
Language: C++

#include <bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp>
// #include <ext/pb_ds/tree_policy.hpp>
// #include <ext/pb_ds/detail/standard_policies.hpp>
// using namespace __gnu_pbds;
using namespace std;
// template <typename T>
// using ordered_set = tree<T, null_type, less<T>, rb_tree_tag,
//     tree_order_statistics_node_update>;
 
typedef long long int ll;
const ll N = 2e5 + 9;
// const ll m = 1e9 + 7;
const ll inf= 1ll<<62;
#define x first
#define y second
#define pb push_back
#define mp make_pair
using pii = pair<ll, ll>;
const ll mod = 1e9+7;
ll powm(ll a, ll b) { a = a%mod;ll res = 1; while (b) { if (b & 1) res = (res * a) % mod; a = (a * a) % mod; b >>= 1; } return res; }
ll fk(ll n,ll k){
     ll a = (k*(k-1))/2;
     return a;
}
ll lk(ll n,ll k){
     ll a = (k*n) - fk(n,k);
     return a;
}
int main()
{   
                               
     ll T= 1;
     // cin>>T;
     ll ca = 1;
     while(T--){
          ll n,k;cin>>n>>k;
          ll ans= 0;
          for(int i = k;i<=n+1;i++){
               ans+=(lk(n,i) - fk(n,i) +1);
               ans%=mid
          }
          cout<<ans<<'\n';
     }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:41:21: error: 'mid' was not declared in this scope; did you mean 'mod'?
   41 |                ans%=mid
      |                     ^~~
      |                     mod
Language: C++

#include <algorithm>
#include <cmath>
#include <cstdio>
#include <deque>
#include <iomanip>
#include <iostream>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>

using namespace std;

typedef long long ll;
typedef pair<int, int> P;
const long long LINF = 1000000000000000018ll;
const int INF = 1000000009;
const int mod = 1000000007;
const int mod2 = 998244353;

int main() {
  std::cin.tie(0);
  ios::sync_with_stdio(false);
  std::cout << std::setprecision(20) << std::fixed;

  ll n, k;
  cin >> n >> k;

  ll ans = 0;
  for (ll i = k; i <= n + 1; i++) {
    ans += (2 * n + 1 - i) * i / 2 - i * (i - 1) / 2 + 1;
    ans %= MOD;
  }
  cout << ans << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:35:12: error: 'MOD' was not declared in this scope
   35 |     ans %= MOD;
      |            ^~~
Language: C

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

#include <iostream>
#include <iomanip>
#include <sstream>
#include <fstream>
#include <stdint.h>
#include <string.h>

//#define _USE_MATH_DEFINES
//#include <math.h>

#include <vector>
#include <list>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <queue>
#include <stack>
#include <deque>
#include <string>

#include <algorithm>
#include <functional>
#include <bitset>
#include <functional>
#include <chrono>
#include <random>
#define sqr(x) (x) * (x)

typedef unsigned int u32;
typedef int i32;
typedef unsigned long long int u64;
typedef long long int i64;
typedef uint16_t u16;
typedef int16_t i16;
typedef uint8_t u8;
typedef int8_t i8;

using namespace std;
using namespace std::chrono;

const i64 mod = 1000000007ll;
//const i64 smod = 998244353ll;
const i64 inf = 1'000'000'000'000'000'000ll + 7;

const double eps = 1e-8;

const i64 MAXN = 2 * 100'000 + 6;
i64 n, k;

i64 c[MAXN];

i64 binpow(i64 a, i64 n) {
    i64 res = 1;
    while (n) {
        if (n & 1) {
            res *= a;
            res %= mod;
        }
        a *= a;
        a %= mod;
        n >>= 1;
    }
    return res % mod;
}


int main(int argc, char* argv[]) {
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0); cout.precision(15); cout.setf(ios::fixed);

    cin >> n >> k;

    i64 z = binpow(10, 100);

    vector<pair<i64, i64>> q;

    i64 R = 0;
    for (i64 m = k; m <= n + 1; m++) {
        i64 sh = (z * m) % mod;

        i64 smin = (m - 1) * m / 2;
        i64 smax = (2 * n - m + 1) * m / 2;

        //if (smax - smin + 1 >= mod) {
        //    cout << mod << endl;
        //    return 0;
        //}

        //cerr << smin << " " << smax << endl;

        R += (smax - smin + 1) % mod;
        R %= mod;

        //if (smax >= smin) {
        //    q.push_back({ smin, 0 });
        //    q.push_back({ smax, 1 });
        //}
        //else {
        //    q.push_back({ smax, 0 });
        //    q.push_back({ mod - 1, 1 });

        //    q.push_back({ 0, 0 });
        //    q.push_back({ smin, 1 });
        //}
    }

    cout << R << endl;

    //sort(q.begin(), q.end());

    //vector<pair<i64, i64>> r;

    //i64 l = q[0].first;
    //i64 o = 1;
    //for (i64 i = 1; i < q.size(); i++) {
    //    if (!q[i].second) {
    //        if (!o) {
    //            l = q[i].first;
    //        }
    //        o += 1;
    //    }
    //    else {
    //        o -= 1;
    //        r.push_back({ l, q[i].first });
    //    }
    //}

    //i64 R = 0;
    //for (auto t : r) {
    //    R += t.second - t.first + 1;
    //    R %= mod;
    //}

    //cout << R << endl;

    return 0;
}

Compiler output:
main.c:4:10: fatal error: iostream: No such file or directory
    4 | #include <iostream>
      |          ^~~~~~~~~~
compilation terminated.
Language: C++

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

int fact(long long a) {
   if (a == 0 || a == 1)
      return 1;
   else
      return a * fact(a - 1);
}
long long com(long long x,long long y){
  long long comb = fact(x) / (fact(y) * fact(x-y));
  return comb % 1000000007;
}
int main(){
  long long n = 0;
  long long k = 0;
  long long ans = 0;
  cin >> n >> k;
  for(long long i = k; k <= n + 1; k++){
    ans = (ans%1000000007 + comb(n+1,k)) % 1000000007;
  }
  cout << ans % 1000000007;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:29: error: 'comb' was not declared in this scope; did you mean 'com'?
   20 |     ans = (ans%1000000007 + comb(n+1,k)) % 1000000007;
      |                             ^~~~
      |                             com
Language: C

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int N = 2e5 + 5;
const ll MOD = 1e9 + 7;

ll get(ll x) {
  if(x <= 0) return 0;
  return (x * (x + 1)) / 2ll;
}

int main() {
  ll n; cin >> n;
  ll k; cin >> k;
  ll p = 0;
  ll ans = 0;
  for(ll i = k; i <= n; i++) {
    ll L = get(i - 1);
    ll R = (get(n) - get(n - i) + MOD) % MOD;
    if(R < 0) R += MOD;
    //cout << L << ' ' << R << '\n';
    ll cur = (R - L + 1 + MOD) % MOD;
    if(cur < 0) cur += MOD;
    ans = (ans + cur) % MOD;
  }
  ans = (ans + 1) % MOD;
  cout << ans << '\n';
  
}

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

#include <iostream>
typedef long long ll; 
const ll mod = 1e9+7;
#define fo(i, n) for (int i = 0; i < n; i++)
#define sc(n) scanf("%d", &n) 
using namespace std;



void solve() {
    ll n, k; scanf("%I64d %I64d", &n, &k);
    ll sum = 0;
    for (ll i = k; i <= n+1; i++) {
        ll minimum = ((i)*(i-1))/2;
        ll maximum = ((2*n-i+1)*(i))/2;
        sum += (maximum-minimum+1) % mod;
        sum %= mod;
    }
    printf("%I64d", sum);
}

int main() {
    int t = 1;
    //scanf("%d", &t);
    while (t--) {
        solve();
    }
    return 0;
}

Compiler output:
main.c:1:10: fatal error: iostream: No such file or directory
    1 | #include <iostream>
      |          ^~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main() {
  int n,k;
  cin >> n >> k;
  long long sum = 0;
  for(int i = k; i <= n; i++) {
    sum += i*(n-i+1) + 1;
  }
  sum += 1;
  cout << sum%(10e9+7) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:14: error: invalid operands of types 'long long int' and 'double' to binary 'operator%'
   11 |   cout << sum%(10e9+7) << endl;
      |           ~~~^~~~~~~~~
      |           |        |
      |           |        double
      |           long long int
Language: C++

int main()
{
    
    fastIO;
    ll t,i,j,k,l,r,n,m,ans,sum,mx,mn,cnt;cin>>n>>k;
    ll a[n+1]={0};
    ll b[n+1]={0};
    b[n]=n;
    for(i=1;i<=n;i++) a[i]=(i+a[i-1]);
    for(i=n-1;i>=0;i--) b[i]=(i+b[i+1]);
    /*for(i=0;i<=n;i++)
    	cout<<a[i]<<" ";
    cout<<endl;

    for(i=0;i<=n;i++)
    	cout<<b[i]<<" ";
    cout<<endl;*/

    ans=0;
	for(i=k-1;i<=n;i++)
	{
		ans+=(b[n-i]+1-a[i]);
		ans%=M;
	}
	cout<<ans<<endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:5: error: 'fastIO' was not declared in this scope
    4 |     fastIO;
      |     ^~~~~~
a.cc:5:5: error: 'll' was not declared in this scope
    5 |     ll t,i,j,k,l,r,n,m,ans,sum,mx,mn,cnt;cin>>n>>k;
      |     ^~
a.cc:5:42: error: 'cin' was not declared in this scope
    5 |     ll t,i,j,k,l,r,n,m,ans,sum,mx,mn,cnt;cin>>n>>k;
      |                                          ^~~
a.cc:5:47: error: 'n' was not declared in this scope
    5 |     ll t,i,j,k,l,r,n,m,ans,sum,mx,mn,cnt;cin>>n>>k;
      |                                               ^
a.cc:5:50: error: 'k' was not declared in this scope
    5 |     ll t,i,j,k,l,r,n,m,ans,sum,mx,mn,cnt;cin>>n>>k;
      |                                                  ^
a.cc:6:7: error: expected ';' before 'a'
    6 |     ll a[n+1]={0};
      |       ^~
      |       ;
a.cc:7:7: error: expected ';' before 'b'
    7 |     ll b[n+1]={0};
      |       ^~
      |       ;
a.cc:8:5: error: 'b' was not declared in this scope
    8 |     b[n]=n;
      |     ^
a.cc:9:9: error: 'i' was not declared in this scope
    9 |     for(i=1;i<=n;i++) a[i]=(i+a[i-1]);
      |         ^
a.cc:9:23: error: 'a' was not declared in this scope
    9 |     for(i=1;i<=n;i++) a[i]=(i+a[i-1]);
      |                       ^
a.cc:10:9: error: 'i' was not declared in this scope
   10 |     for(i=n-1;i>=0;i--) b[i]=(i+b[i+1]);
      |         ^
a.cc:19:5: error: 'ans' was not declared in this scope
   19 |     ans=0;
      |     ^~~
a.cc:20:13: error: 'i' was not declared in this scope
   20 |         for(i=k-1;i<=n;i++)
      |             ^
a.cc:22:32: error: 'a' was not declared in this scope
   22 |                 ans+=(b[n-i]+1-a[i]);
      |                                ^
a.cc:23:22: error: 'M' was not declared in this scope
   23 |                 ans%=M;
      |                      ^
a.cc:25:9: error: 'cout' was not declared in this scope
   25 |         cout<<ans<<endl;
      |         ^~~~
a.cc:25:20: error: 'endl' was not declared in this scope
   25 |         cout<<ans<<endl;
      |                    ^~~~
Language: C

#include<iostream>

long long mod = 1000000007;

long long left;
long long right;

long long sum(int a, int b);

int main(void) {
    int n, k;
    long long ret = 0;
    std::cin >> n >> k;
    if(n < k) {
        std::cout << 1 << std::endl;
        return 0;
    }
    left = sum(0, k - 1);
    right = sum(n - (k-1), n);

    ret += (right - left + 1);
    for(int i = k; i < n; ++i) {
        left += i;
        right += (n - i);

        ret += (right - left + 1);
        //std::cout << (right - left + 1) << std::endl;
        ret %= mod;
    }
    ret += 1;
    std::cout << ret  << std::endl;
}

long long sum(int a, int b) {
    long long ret = 0;
    for(int i = a; i <= b; ++i) {
        ret += i;
    }
    return ret;
}

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

#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef long double ld;
#define pll pair<ll,ll>
#define pb push_back
#define mp(x, y) make_pair((x), (y))
#define F first
#define S second
#define I insert
#define vll vector<ll>
#define vbl vector<bool>
#define vvll vector<vll>
#define vld vector<ld>
#define vb vector<bool>
#define vc vector<char>
#define vpll vector<pll>
#define all(x) (x).begin(), (x).end()

template<class T> ostream& operator<<(ostream &os, vector<T> V){
	os << "[ ";
	for(auto v  : V) os << v << " ";
	return os << " ]";
}
template<class T> ostream& operator<<(ostream &os, set<T> V){
	os << "[ ";
	for(auto v  : V) os << v << " ";
	return os << " ]";
}
template<class T , class R > ostream& operator<<(ostream &os, map<T , R> V){
	os << "[ ";
	for(auto v  : V) os << "(" << v.first << ":" << v.second << ")";
	return os << " ]";
}
template<class T , class R > ostream& operator<<(ostream &os, pair<T , R> V){
	return os << "(" << V.first << "," << V.second << ")";
}

#define cerr cout
#define TRACE
#ifdef TRACE
    #define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
    template <typename Arg1>
    void __f(const char* name, Arg1&& arg1){
        cerr << name << " : " << arg1 << endl;
    }
    template <typename Arg1, typename... Args>
    void __f(const char* names, Arg1&& arg1, Args&&... args){
        const char* comma = strchr(names + 1, ',');
        cerr.write(names, comma - names) << " : " << arg1<<" | ";
        __f(comma+1, args...);
    }
    clock_t clk=clock();
    #define checktime() cout<<"\nTime Elapsed : "<<float(clock()-clk)/CLOCKS_PER_SEC<<endl
#else
    #define trace(...);
    #define checktime();
#endif

const ll Mod = 1e9 + 7;
// const ll Mod = 998244353;
const ll MAXN = 1e6;

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cout<<fixed<<setprecision(25);

    ll n,k;cin>>n>>k;
    ll ans=0;
    for(ll i=k;i<=n+1;i++){
        ans=((ans+i*n-i*(i-1)+1)%Mod+Mod)%Mod;
    }
    cout<<ans<<"\n";

    return 0;
}

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
#include <algorithm>
#include <iostream>
#include <map>
#include <queue>
#include <set>
#include <string>
#include <vector>
#include <bits/stdc++.h>
using namespace std;
 
//priority_queue<long long, vector<long long>, greater<long long>> pq;

const double TL = 1.5 * CLOCKS_PER_SEC;
mt19937 rng((unsigned int) chrono::steady_clock::now().time_since_epoch().count());
#define clr(x, y) memset(x, y, sizeof(x))
#define forn(i, n) for (int i = 0; i < n; i++)
#define LL long long


const double pi = acos(-1.0);

LL mod = 1e9 + 7;
LL n, k;


int main() {
  //auto start_clock = clock();
#ifdef LOCAL
  freopen("in", "r", stdin);
#endif

  LL p = 1;
  for (int i = 1; i <= 100; i++) {
    p = p * 10 % mod;
  }

  LL ans = 0;
  cin >> n >> k;
  for (LL i = k; i <= n + 1; i++) {
    LL l = (p + p + i - 1) * i / 2;
    LL r = (p + n + p + n - i + 1) * i / 2;
    ans += (r - l + 1);
    ans %= mod;
    
  }
  cout << ans << endl;
  return 0;
}

Compiler output:
main.c:5:10: fatal error: algorithm: No such file or directory
    5 | #include <algorithm>
      |          ^~~~~~~~~~~
compilation terminated.
Language: C

#include<bits/stdc++.h>
using namespace std;
#define ll long long 
// memo  fixed  setprecision(20);
using vvll = vector<vector<ll>>;
ll mod =1000000007;
/*"itob" int to "N"base */           template<typename TypeInt> string itob(const TypeInt v, int base){static const char table[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";string ret;static numeric_limits<TypeInt> t;TypeInt n = v;if (t.is_signed) {if (v < 0) n *= -1;}while (n >= base) {ret += table[n%base];n /= base;}ret += table[n];if (t.is_signed) {if (v < 0 && base == 10) ret += '-';}reverse(ret.begin(), ret.end());return ret;}
/*"chmin" a = MAX*/                  template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }
/*"chmax" a = MIN*/                  template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
/*"ctoi"  char to int*/              int ctoi(char c) {return c-'0';}
/*"gcd"   MAX Euclidean */           ll gcd(ll a,ll b){if(b==0)return a; return gcd(b,a%b);}
/*"lcm"   MIN*/                      ll lcm(ll a,ll b){ll g = gcd(a,b);return a/g*b;}
/*"primecheck"If prime,return true.*/bool primecheck(ll n){if(n < 2) return false;else{for(int i = 2; i * i <= n; i++){if(n % i == 0) return false;}return true;}}
string  reverserange(string s,ll a,ll b){reverse(s.begin()+a-1,s.begin()+b); return s;}
int main(){
   int n,k;
   cin >> n >> k;
   ll migi = k*(k-1)/2;
   ll h = n,m=k;
   h=h%mod;
   m = m%mod;
   ll ans = 0;
   ll hidari = 0;

   if(n+1==k){
      cout << 1<<endl;
      return 0;
   }
   for(int i=0;i<k;i++){
      hidari+=h;
      h--;
   }
   for(int i=k;i<=n+1;i++){
      ll d = (hidari-migi)%mod;
      d++;
      d%=mod;
      ans+=d;
      ans = ans%mod;
      migi +=m;
      m++;
      hidari+=h;
      h--;
   }
   cout << ans << endl;
}
    



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<bits/stdc++.h>
using namespace std;
typedef long long int ll;
#define rep(i,n) for(int i = 0; i < (n); ++i)
#define rep1(i, n) for (int i = 1; i <= (n); ++i)
#define Sort(Array) sort(Array.begin(), Array.end())
#define Reverse(a) reverse(a.begin(), a.end())
#define out(ans) cout << ans << endl;

void recursive_comb(ll *indexes, ll s, ll rest, function<void(ll *)> f) {
  if (rest == 0) {
    f(indexes);
  } else {
    if (s < 0) return;
    recursive_comb(indexes, s - 1, rest, f);
    indexes[rest - 1] = s;
    recursive_comb(indexes, s - 1, rest - 1, f);
  }
}

// nCkの組み合わせに対して処理を実行する
void foreach_comb(ll n, ll k, function<void(ll *)> f) {
  ll indexes[k];
  recursive_comb(indexes, n - 1, k, f);
}

int main(){
  int n, k;
  vector<ll> a;
  vector<ll> b;
  cin>>n>>k;
  foreach_comb(n+1, k, [](ll *b) {
    ll num = indexes[0] + indexes[1] + indexes[2] + pow(10, 100)*k;
    if(binary_search(a.begin(), a.end(), num)) {continue;}
    else a.push_back(num);
  });
  out(a.size() % 1000000007);

}


Compiler output:
a.cc: In lambda function:
a.cc:33:14: error: 'indexes' was not declared in this scope; did you mean 'index'?
   33 |     ll num = indexes[0] + indexes[1] + indexes[2] + pow(10, 100)*k;
      |              ^~~~~~~
      |              index
a.cc:33:66: error: 'k' is not captured
   33 |     ll num = indexes[0] + indexes[1] + indexes[2] + pow(10, 100)*k;
      |                                                                  ^
a.cc:32:25: note: the lambda has no capture-default
   32 |   foreach_comb(n+1, k, [](ll *b) {
      |                         ^
a.cc:28:10: note: 'int k' declared here
   28 |   int n, k;
      |          ^
a.cc:34:22: error: 'a' is not captured
   34 |     if(binary_search(a.begin(), a.end(), num)) {continue;}
      |                      ^
a.cc:32:25: note: the lambda has no capture-default
   32 |   foreach_comb(n+1, k, [](ll *b) {
      |                         ^
a.cc:29:14: note: 'std::vector<long long int> a' declared here
   29 |   vector<ll> a;
      |              ^
a.cc:34:33: error: 'a' is not captured
   34 |     if(binary_search(a.begin(), a.end(), num)) {continue;}
      |                                 ^
a.cc:32:25: note: the lambda has no capture-default
   32 |   foreach_comb(n+1, k, [](ll *b) {
      |                         ^
a.cc:29:14: note: 'std::vector<long long int> a' declared here
   29 |   vector<ll> a;
      |              ^
a.cc:34:49: error: continue statement not within a loop
   34 |     if(binary_search(a.begin(), a.end(), num)) {continue;}
      |                                                 ^~~~~~~~
a.cc:35:10: error: 'a' is not captured
   35 |     else a.push_back(num);
      |          ^
a.cc:32:25: note: the lambda has no capture-default
   32 |   foreach_comb(n+1, k, [](ll *b) {
      |                         ^
a.cc:29:14: note: 'std::vector<long long int> a' declared here
   29 |   vector<ll> a;
      |              ^
Language: C

#include<bits/stdc++.h>
using namespace std;
using lint = long long;
const lint MOD = 1e9+7;

signed main(){
  lint N, K; cin >> N >> K;
  lint ans = 0;
  for(lint i = N - K + 2; i <= N + 1; i++){
    ans += i;
    ans %= MOD;
  }
  lint ans1 = 0;
  for(lint i = 1; i <= K; i++){
    ans1 += i; ans1 %= MOD;
  }
  lint ans2 = 0;
  ans2 += (ans - ans1 + 1) % MOD;
  if(ans2 < 0) ans2 += MOD;
  
  for(lint i = 1; i <= N - K + 1; i++){
    ans1 += K + i;
    ans += (N - K - i + 2);
    ans1 %= MOD; ans %= MOD;
    ans2 += (ans - ans1 + 1);
    ans2 %= MOD;
    if(ans2 < 0) ans2 += MOD;
  }
  cout << ans2 << endl;
}

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 <bits/stdc++.h>
typedef long long ll;
using namespace std;
int main(void){
    int N; cin >> N;
    string S; cin >> S;
    
    ll r=0, g=0, b=0;
    for (auto c : S){
        if (c=='R') r++;
        if (c=='G') g++;
        if (c=='B') b++;
    }
    
    ll ans = r * g * b;
    for (int d = 1; d <= N; d++){
        for (int m = 1; m < N-1; m++){
            if (m-d<0||m+d>N-1) continue;
            if (S[m-d]!=S[m+d] && S[m-d]!=S[m] && S[m]!=S[m+d]) ans--;
        }
    }
    cout << ans << endl;
}
————————————————
版权声明：本文为CSDN博主「zha_zha_wei」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/qq_45585519/java/article/details/105482154

Compiler output:
a.cc:24:1: error: extended character — is not valid in an identifier
   24 | ————————————————
      | ^
a.cc:24:1: error: extended character — is not valid in an identifier
a.cc:24:1: error: extended character — is not valid in an identifier
a.cc:24:1: error: extended character — is not valid in an identifier
a.cc:24:1: error: extended character — is not valid in an identifier
a.cc:24:1: error: extended character — is not valid in an identifier
a.cc:24:1: error: extended character — is not valid in an identifier
a.cc:24:1: error: extended character — is not valid in an identifier
a.cc:24:1: error: extended character — is not valid in an identifier
a.cc:24:1: error: extended character — is not valid in an identifier
a.cc:24:1: error: extended character — is not valid in an identifier
a.cc:24:1: error: extended character — is not valid in an identifier
a.cc:24:1: error: extended character — is not valid in an identifier
a.cc:24:1: error: extended character — is not valid in an identifier
a.cc:24:1: error: extended character — is not valid in an identifier
a.cc:24:1: error: extended character — is not valid in an identifier
a.cc:25:1: error: extended character 「 is not valid in an identifier
   25 | 版权声明：本文为CSDN博主「zha_zha_wei」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。
      | ^
a.cc:25:1: error: extended character 」 is not valid in an identifier
a.cc:25:70: error: extended character 。 is not valid in an identifier
   25 | 版权声明：本文为CSDN博主「zha_zha_wei」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。
      |                                                                      ^
a.cc:24:1: error: '\U00002014\U00002014\U00002014\U00002014\U00002014\U00002014\U00002014\U00002014\U00002014\U00002014\U00002014\U00002014\U00002014\U00002014\U00002014\U00002014' does not name a type
   24 | ————————————————
      | ^~~~~~~~~~~~~~~~
Language: C++

define ALL(v) v.begin(), v.end()
const int INF = 1e9;
const int MAX = 510000;
const int MOD = 1000000007;
using namespace std;
typedef long long ll;
const int m =773267297;

/*C++になってるか認したほうがよくない？WOWWOW*/
/*DP使ったほうがよくない？？WOWWOW*/

int main(){
    ll N, K, c; cin>>N>>K;
    ll S=0;
    for(int i=K; i<=N+1; i++){
        c=(1+i*(N+1-i))%MOD;
        S=(S+c)%MOD;
    }
    cout<<S<<endl;
    return 0;
}

Compiler output:
a.cc:1:1: error: 'define' does not name a type
    1 | define ALL(v) v.begin(), v.end()
      | ^~~~~~
a.cc: In function 'int main()':
a.cc:13:17: error: 'cin' was not declared in this scope
   13 |     ll N, K, c; cin>>N>>K;
      |                 ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | define ALL(v) v.begin(), v.end()
a.cc:19:5: error: 'cout' was not declared in this scope
   19 |     cout<<S<<endl;
      |     ^~~~
a.cc:19:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:19:14: error: 'endl' was not declared in this scope
   19 |     cout<<S<<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 ALL(v) v.begin(), v.end()
Language: C


#include<bits/stdc++.h>
using namespace std;
#define gearup ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);

#define pb push_back
#define F first
#define S second

#define all(v) v.begin(),v.end()
#define allr(v) v.rbegin(),v.rend()
#define int long long
#define ll long long
const int M=1e9+7;

int dx[]={1,-1,0,0,1,1,-1,-1};
int dy[]={0,0,1,-1,1,-1,1,-1};

int expo(int x, int y) {int res=1;x=x%M;while(y>0){if(y&1)res=(1ll*res*x)%M;
	y=y>>1;x=(1ll*x*x)%M;} return res;}
	

signed main(){
	gearup;
	int t = 1;
	//cin >> t;
	int store[200005] = {};
	for(int i = 1 ; i < 200005 ; i++)
		store[i + 1] = i * (i + 1) / 2;
	while(t--){
		int n, k, ans = 0;
		cin >> n >> k;
		for(int i = k ; i <= n + 1; i++){
			int temp = store[n + 1] - store[n + 1 - i] - store[i] + 1;
			ans = (ans + temp) % M;
		}
		cout << ans;
	}
	return 0;
}

Compiler output:
main.c:2:9: fatal error: bits/stdc++.h: No such file or directory
    2 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

#include <iostream>
#include <cstdint>

using namespace std;

int main(int argc, char const* argv[]) {
	uint64_t N, K;

	cin >> N;
	cin >> K;

	uint64_t cnt = 0;
	for (uint64_t L = K; L <= N + 1; L++) {
		cnt += (L * (2 * N - L + 1)) / 2 - ((L - 1) * L) / 2 + 1;
		cnt = cnt % (1000000007);
	}

	cout << cnt;

	return 0;
}


Compiler output:
main.c:1:10: fatal error: iostream: No such file or directory
    1 | #include <iostream>
      |          ^~~~~~~~~~
compilation terminated.
Language: C

#include <bits/stdc++.h>
using LL = long long;
using namespace std;
const int mod = 1e9 + 7;
int main() {
	int n, k; cin >> n >> k;
	LL pre_sum[n + 1] = {};
	int a[n + 1] = {};
	iota(a, a + n + 1, 0);
	for (int i = 1; i <= n; i++) {
		pre_sum[i] = pre_sum[i - 1] + a[i];
	}
	LL sum = 1;
	for (int i = 2; i <= n; i++) {
		sum = (sum + pre_sum[n] - pre_sum[n - i] - pre_sum[i - 1] + 1) % mod;
	}
	cout << sum;
}

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

//#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define INF 0x7fffffff
#define INFL 0x7fffffffffffffffLL

int main() {
	ll		b,c,i,j,k,n,m,x,y,ans = 0;
	string	str;

	cin >> n >> k;
	for(i=k;i<=n+1; i++) {
		x = (i-1)*i/2;
		y = (n + (n-i+1))*i/2;
		ans += y-x+1;
		ans = ans % 1000000007;
		//cout << i << ' ' << ans << endl;
	}
	//cout << endl;
	cout << ans << endl;

}


Compiler output:
main.c:2:10: fatal error: bits/stdc++.h: No such file or directory
    2 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: Java

import java.util.*;
public class Main{
   static long factorial(int n, long ans){
    if(n <= 1) return ans;
    return factorial(n-1, ans*n);  
  }
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int k = sc.nextInt();
    long mod = (Math.pow(10,9)).longValue()+7;
    long ans = 0;
    long fact[] = new long[n+2];
    fact[n+1] = factorial(n+1, 1);
    for(int i = 0 ; i <= n-k+1; i++){
      if(fact[k+i] == 0) fact[k+i] = factorial(k+i, 1);
      if(fact[n-k-i] == 0) fact[n-k-i] = factorial(n-k-i, 1);
      ans += fact[n+1]/(fact[k+i]*fact[n-k-i+1]);
    }
    if(ans > mod) ans = ans % mod;
    System.out.println(ans);
  }
}

Compiler output:
Main.java:11: error: double cannot be dereferenced
    long mod = (Math.pow(10,9)).longValue()+7;
                               ^
1 error
Language: C

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

#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n)  FOR(i,0,n)
#define MOD 1000000007
using LL = long long;

LL sumNM(LL n, LL m) {
  return (n+m)*(m-n+1)/2;
}

int main()
{
  int N, K; cin >> N >> K;
  LL ans = 0;
  FOR(i, K, N+2) {
    ans = (ans + sumNM(N-i+1, N) - sumNM(0, i-1) + 1) % MOD;
  }
  cout << ans;
}

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: Java

import java.util.*;
public class Main{
   static long factorial(int n, long ans){
    if(n <= 1) return ans;
    return factorial(n-1, ans*n);  
  }
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int k = sc.nextInt();
    long mod = Math.pow(10^9).longValue()+7;
    long ans = 0;
    long fact[] = new long[n+2];
    fact[n+1] = factorial(n+1, 1);
    for(int i = 0 ; i <= n-k+1; i++){
      if(fact[k+i] == 0) fact[k+i] = factorial(k+i, 1);
      if(fact[n-k-i] == 0) fact[n-k-i] = factorial(n-k-i, 1);
      ans += fact[n+1]/(fact[k+i]*fact[n-k-i+1]);
    }
    if(ans > mod) ans = ans % mod;
    System.out.println(ans);
  }
}

Compiler output:
Main.java:11: error: method pow in class Math cannot be applied to given types;
    long mod = Math.pow(10^9).longValue()+7;
                   ^
  required: double,double
  found:    int
  reason: actual and formal argument lists differ in length
1 error
Language: C

#include<bits/stdc++.h>
using ll = int_fast64_t;
const int MOD = 1e9+7;

int main(){
        int n, k;
        scanf("%d %d", &n, &k);
        n++;
        ll ans = 0;
        for(ll i=k; i<=n; i++) {
                ans += (n-i) * i % MOD + 1;
                ans %= MOD;
        }
        printf("%ld\n", ans);
        return 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: Java

import java.util.*;
public class Main{
   static long factorial(int n, long ans){
    if(n <= 1) return ans;
    return factorial(n-1, ans*n);  
  }
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int k = sc.nextInt();
    long mod = Math.pow(10, 9)+7;
    long ans = 0;
    long fact[] = new long[n+2];
    fact[n+1] = factorial(n+1, 1);
    for(int i = 0 ; i <= n-k+1; i++){
      if(fact[k+i] == 0) fact[k+i] = factorial(k+i, 1);
      if(fact[n-k-i] == 0) fact[n-k-i] = factorial(n-k-i, 1);
      ans += fact[n+1]/(fact[k+i]*fact[n-k-i+1]);
    }
    if(ans > mod) ans = ans % mod;
    System.out.println(ans);
  }
}

Compiler output:
Main.java:11: error: incompatible types: possible lossy conversion from double to long
    long mod = Math.pow(10, 9)+7;
                              ^
1 error
Language: Java

import java.util.*;
public class Main{
   static long factorial(int n, long ans){
    if(n <= 1) return ans;
    return factorial(n-1, ans*n);  
  }
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int k = sc.nextInt();
    long mod = Math.pow(10^9)+7;
    long ans = 0;
    long fact[] = new long[n+2];
    fact[n+1] = factorial(n+1, 1);
    for(int i = 0 ; i <= n-k+1; i++){
      if(fact[k+i] == 0) fact[k+i] = factorial(k+i, 1);
      if(fact[n-k-i] == 0) fact[n-k-i] = factorial(n-k-i, 1);
      ans += fact[n+1]/(fact[k+i]*fact[n-k-i+1]);
    }
    if(ans > mod) ans = ans % mod;
    System.out.println(ans);
  }
}

Compiler output:
Main.java:11: error: method pow in class Math cannot be applied to given types;
    long mod = Math.pow(10^9)+7;
                   ^
  required: double,double
  found:    int
  reason: actual and formal argument lists differ in length
1 error
Language: Java

import java.util.*;
public class Main{
   static long factorial(int n, long ans){
    if(n <= 1) return ans;
    return factorial(n-1, ans*n);  
  }
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int k = sc.nextInt();
    long mod = Math.pow(10^9)+7;
    long ans = 0;
    long fact[] = new long[n+2];
    fact[n+1] = factorial(n+1, 1);
    for(int i = 0 ; i <= n-k+1; i++){
      if(fact[k+i] == 0) fact[k+i] = factorial(k+i, 1);
      if(fact[n-k-i] == 0) fact[n-k-i] = factorial(n-k-i, 1);
      ans += factorial[n+1]/(fact[k+i]*fact[n-k+i+1]);
    }
    if(ans > mod) ans = ans % mod;
    System.out.println(ans);
  }
}

Compiler output:
Main.java:11: error: method pow in class Math cannot be applied to given types;
    long mod = Math.pow(10^9)+7;
                   ^
  required: double,double
  found:    int
  reason: actual and formal argument lists differ in length
Main.java:18: error: cannot find symbol
      ans += factorial[n+1]/(fact[k+i]*fact[n-k+i+1]);
             ^
  symbol:   variable factorial
  location: class Main
2 errors
Language: C

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

template<typename T>
istream& operator >> (istream& istr, vector<T>& v){
    for(T& x: v) istr >> x;
    return istr;
}

template<typename T, typename U>
istream& operator >> (istream& istr, pair<T,U>& p){
    istr >> p.first >> p.second;
    return istr;
}

template<typename T>
ostream& operator << (ostream& ostr, vector<T>& v){
    if(!v.empty()){
        ostr << v.front();
        for(auto itr = ++v.begin(); itr != v.end(); itr++)
            // ostr << *itr;
            ostr << " " << *itr;
    }
    return ostr;
}

template<typename T, typename U>
ostream& operator << (ostream& ostr, pair<T,U>& p){
    // ostr << p.first << p.second;
    // ostr << p.first << ", " << p.second;
    ostr << "(" << p.first << ", " << p.second << ")";
    return ostr;
}

template<typename T>
ostream& operator << (ostream& ostr, vector<vector<T>>& vv){
    if(!vv.empty()){
        ostr << vv.front();
        for(auto itr = ++vv.begin(); itr != vv.end(); itr++)
            ostr << endl << *itr;
    }
    return ostr;
}

template<typename T, typename U>
ostream& operator << (ostream& ostr, vector<pair<T,U>>& vp){
    if(!vp.empty()){
        ostr << vp.front();
        for(auto itr = ++vp.begin(); itr != vp.end(); itr++)
            ostr << endl << *itr;
    }
    return ostr;
}

typedef long long ll;
typedef vector<ll> vll;
typedef vector<char> vc;
typedef vector<double> vd;
// vll v(n); v[i]=x;
typedef vector<vll> vvll;
typedef vector<vc> vvc;
typedef vector<vd> vvd;
// vvll v(m,vll(n)); v[i][j]=x;
typedef pair<ll,ll> pll;
typedef pair<double,double> pd;
typedef vector<pll> vpll;
typedef vector<pd> vpd;
// vpll v(n); v[i]=make_pair(x,y); v[i].first/second;
// v.front() : v[0]
// v.back()  : v[v.size()-1]

#define PI 3.1415926535897932
#define EPS 1e-12
#define INF ((ll)1e+12)
#define REP(i,n) for(ll i=0; i<(n); i++)
#define RREP(i,n) for(ll i=(n)-1; i>=0; i--)
#define FOR(i,a,b) for(ll i=(a); i<=(b); i++)
#define FORR(i,a,b) for(ll i=(b); i>=(a); i--)
#define fix(x) cout << fixed << setprecision(x)
#define dump(x) cout << #x << " = " << (x) << endl
#define all(x) (x).begin(),(x).end()

template<typename T> T sum(vector<T>& v){return accumulate(all(v), (T)0);}
template<typename T> inline void sort(vector<T>& v){sort(all(v));}
template<typename T> inline void rsort(vector<T>& v){sort(all(v), greater<T>());}
template<typename T> inline void chmin(T& a, T b){if(a>b) a=b;}
template<typename T> inline void chmax(T& a, T b){if(a<b) a=b;}

int main(){
    ll n, k, ans = 0;
    const ll MOD = 1e9+7;
    cin >> n >> k;
    ll lb = (0 +   k-1)*k/2;
    ll ub = (n + n-k+1)*k/2;
    FOR(i,k,n+1){
        ans += ub-lb+1;
        ans %= MOD;
        lb += i-1;
        ub += n-i-1;
    }
    cout << ans << endl;
    return 0;
}


Compiler output:
main.c:1:10: 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;
#define ll long long
#define pb push_back
#define all(t) t.begin(), t.end()
#define inrange(i, a, b) (((i)>= min((a), (b))) && ((i) <= max((a), (b))))
typedef vector<ll> vi;
#define fi first
#define se second
const ll inf = 9e18;
const ll mod = 1e9 + 7;

void print(ll a[], ll n){for(ll i=0;i<n;i++){cout<<a[i]<<" ";}cout<<"\n";}
ll power(ll x, ll y, ll M = inf){
    ll ans = 1;
    x %= M;
    while(y){
        if(y&1)
            ans = (x * ans) % M;

        x = (x * x) % M;
        y >>= 1;
    }
    return ans;
}
ll modInverse(ll n) {return power(n, mod-2, mod);}
inline ll mul(ll a, ll b){ return (a * b) % mod; }
inline ll sub(ll a, ll b){ ll c = a - b; if(c < 0) c += mod; return c; }
inline ll add(ll a, ll b){ ll c = a + b; if(c > mod) c -= mod; return c; }
inline ll divi(ll a, ll b){ return mul(a, modInverse(b)); }

ll nCr(ll n, ll k){
    ll res = 1;
    ll resd = 1;
    if ( k > n - k )
        k = n - k;
    for (ll i = 0; i < k; ++i){
        res *= (n - i);
        resd *= (i + 1);
    }
    return divi(res, resd);
}
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);

	ll n, k;
	cin>>n>>k;
	ll ans = 0;
	ll x =0;
	ll maxs=0;
	for(int i=0;i<k;i++){
		x+=i;
		maxs+=(n-i);
	}
	for(int i=k; i<=n+1;i++){

		ans = add(ans,(maxs + 1 - x+mod)%mod);
		x+=i;
		maxs+=(n-i);
	}
	cout<<ans%mod;
	
	return 0;
}


Compiler output:
main.c:1:10: 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;
typedef long long ll;
#define rep(i,a,b) for (ll i = (a); i < (b); i++)
#define REP(i,n) rep(i,0,n)
#define mod (1000000007)
void solve() 
{
    ll n,k;cin>>n>>k;
    ll mn[n+1],mx[n+1];mn[0]=0;mx[0]=n;
    rep(i,1,n+1){
        mn[i]=mn[i-1]+i;
        mx[i]=mx[i-1]+(n-i);
    }
    ll ans=0;
    for(int i=k-1;i<=n;i++){
        // cout<<mx[i]-mn[i]+1<<endl;
        ans+=mx[i]-mn[i]+1;
        ans%=mod;
    }
    cout<<ans<<endl;
    
}

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

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.