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

#include<bits/stdc++.h>
#include"Templates/libraries.h"
using namespace std;
int main(){
  lli n, k;
  cin >> n >> k;
  vector<lli> vec(n),arr(3*n);
  rep0(i,n) cin >> vec[i];
  map<lli, lli> mp;
  rep0(i,n){
    lli e=vec[i], num=0;
    auto fin=mp.lower_bound(e);
    for(auto itr=mp.begin(); itr!=fin; ++itr) num+=itr->second;
    if(fin != mp.end() && fin->first <= e)num+=fin->second;
    arr[i]=num;
    mp[e]++;
  }
  rep0(i,n){
    lli e=vec[i], num=0;
    auto fin=mp.lower_bound(e);
    for(auto itr=mp.begin(); itr!=fin; ++itr) num+=itr->second;
    if(fin != mp.end() && fin->first <= e)num+=fin->second;
    arr[n+i]=num;
    mp[e]++;
  }
//  rep0(i,n){
//    lli e=vec[i], num=0;
//    auto fin=mp.lower_bound(e);
//    for(auto itr=mp.begin(); itr!=fin; ++itr) num+=itr->second;
//    if(fin != mp.end() && fin->first <= e)num+=fin->second;
//    arr[2*n+i]=num;
//    mp[e]++;
//  }
//  rep0(i,n*3)cout << i-arr[i] << ' ';
//  cout << endl;
  lli ans=0;
//  for(auto e:mp)cout << e.first << ' ' <<  e.second << endl;
  rep0(i,n){
    //ans+= (i-arr[i])*k % MOD + ((n+i-arr[n+i] - (i-arr[i]))*k*(k-1)/2) %MOD;
    ans= (ans + i-arr[i])%MOD;
    lli temp=0;
    for(auto e=mp.begin(); e->first < vec[i]; e++){
      temp+=e->second;
    }
    ans=(ans + temp*k*(k-1)/2 )%MOD;
    //cout <<(i-arr[i])*k % MOD << ' ' <<  ((n+i-arr[n+i] - (i-arr[i]))*k*(k-1)/2) %MOD << endl;
  }
  cout << ans % MOD;

}


Compiler output:
a.cc:2:9: fatal error: Templates/libraries.h: No such file or directory
    2 | #include"Templates/libraries.h"
      |         ^~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

typedef long long ll;
typedef vector<pair<ll, ll>> pll;
 
#define mod 1000000007
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define popcount(x) __builtin_popcountll(x)
 
const long double PI = acos(-1);
 
ll gcd(ll a,ll b){return b ? gcd(b,a%b) : a;}
ll lcm(ll a,ll b){return a / gcd(a,b) * b;}
ll stringcount(string s, char c){return count(s.cbegin(), s.cend(), c);}
bool isInteger(double x){return floor(x) == x;}

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

  ll n, k;
  cin >> n >> k;
  vector<ll> a(n);
  for(ll i = 0; i < n; i++) cin >> a[i];

  ll ans = 0;
  for(ll i = 0; i < n; i++){
    ll cnt = 0;
    for(ll j = i + 1; j < n; j++){
      if(a[i] > a[j]) cnt++;
    }
    cnt *= k % mod;
    ans += cnt % mod;
    ans %= mod;
  }

  for(ll i = 0; i < n; i++){
    ll cnt = 0;
    for(ll j = 0; j < n; j++){
      if(a[i] > a[j]) cnt++;
    }
    cnt *= (k * (k-1))/2 % mod;
    ans += cnt % mod;
    ans %= mod;
  }
  cout << ans << endl;
  return 0;
}

Compiler output:
a.cc:2:9: error: 'vector' does not name a type
    2 | typedef vector<pair<ll, ll>> pll;
      |         ^~~~~~
a.cc:9:24: error: 'acos' was not declared in this scope
    9 | const long double PI = acos(-1);
      |                        ^~~~
a.cc:13:16: error: 'string' was not declared in this scope
   13 | ll stringcount(string s, char c){return count(s.cbegin(), s.cend(), c);}
      |                ^~~~~~
a.cc:13:26: error: expected primary-expression before 'char'
   13 | ll stringcount(string s, char c){return count(s.cbegin(), s.cend(), c);}
      |                          ^~~~
a.cc:13:32: error: expression list treated as compound expression in initializer [-fpermissive]
   13 | ll stringcount(string s, char c){return count(s.cbegin(), s.cend(), c);}
      |                                ^
a.cc: In function 'bool isInteger(double)':
a.cc:14:33: error: 'floor' was not declared in this scope
   14 | bool isInteger(double x){return floor(x) == x;}
      |                                 ^~~~~
a.cc: In function 'int main()':
a.cc:17:3: error: 'ios' has not been declared
   17 |   ios::sync_with_stdio(false);
      |   ^~~
a.cc:18:3: error: 'cin' was not declared in this scope
   18 |   cin.tie(0);
      |   ^~~
a.cc:22:3: error: 'vector' was not declared in this scope
   22 |   vector<ll> a(n);
      |   ^~~~~~
a.cc:22:12: error: expected primary-expression before '>' token
   22 |   vector<ll> a(n);
      |            ^
a.cc:22:14: error: 'a' was not declared in this scope
   22 |   vector<ll> a(n);
      |              ^
a.cc:45:3: error: 'cout' was not declared in this scope
   45 |   cout << ans << endl;
      |   ^~~~
a.cc:45:18: error: 'endl' was not declared in this scope
   45 |   cout << ans << endl;
      |                  ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  long long int N,K,X=0,M=1000000007;
  cin>>N>>K;int A[N];
  for(int i=0;i<N;i++)cin>>A[i];
  for(int i=0;i<N;i++){
    int S=0,T=0;
    for(int j=0;j<i;j++)if(A[i]<A[j])S++;
    else(int j=i;j<N;j++)if(A[i]<A[j])T++;
    X+=K*T%M+(K-1)*S%M;X%=M;
  }
  cout<<X<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:10: error: expected primary-expression before 'int'
   10 |     else(int j=i;j<N;j++)if(A[i]<A[j])T++;
      |          ^~~
a.cc:10:10: error: expected ')' before 'int'
   10 |     else(int j=i;j<N;j++)if(A[i]<A[j])T++;
      |         ~^~~
      |          )
a.cc:10:18: error: 'j' was not declared in this scope
   10 |     else(int j=i;j<N;j++)if(A[i]<A[j])T++;
      |                  ^
Language: C++

v#include <bits/stdc++.h>
#define rep(i,n)for(long long i=0;i<(n);i++)
using namespace std;
typedef long long ll;
const int MOD=1e9+7;
const int MAX = 1000000;
const ll INF = (1LL << 31) - 1;
const double pi=acos(-1);
long long fac[MAX], finv[MAX], inv[MAX];

// テーブルを作る前処理
void COMinit() {
    fac[0] = fac[1] = 1;
    finv[0] = finv[1] = 1;
    inv[1] = 1;
    for (int i = 2; i < MAX; i++){
        fac[i] = fac[i - 1] * i % MOD;
        inv[i] = MOD - inv[MOD%i] * (MOD / i) % MOD;
        finv[i] = finv[i - 1] * inv[i] % MOD;
    }
}

// 二項係数計算
long long COM(int n, int k){
    if (n < k) return 0;
    if (n < 0 || k < 0) return 0;
    return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD;
}



int main(){
  int n;
  ll k;
  cin >> n >> k;
  COMinit();
  vector<ll>a(n);
  rep(i,n)cin >> a[i];
  ll ans=0;
  rep(i,n-1){
    for(int j=i+1;j<n;j++){
      if(a[i]>a[j]){
        ans++;
        ans%=MOD;
      }
    }
  }
  ans*=k;
  ans%=MOD;
  vector<ll>b(n);
  rep(i,n){
    ll sum=0;
    rep(j,n){
      if(a[i]>a[j])sum++;
    }
    sum%=MOD;
    b[i]=sum;
  }
  rep(i,n){
    ans+=k*(k-1)*b[i]/2;
    ans%=MOD;
  }
  cout << ans<< endl;
  
    
}


Compiler output:
a.cc:1:2: error: stray '#' in program
    1 | v#include <bits/stdc++.h>
      |  ^
a.cc:1:1: error: 'v' does not name a type
    1 | v#include <bits/stdc++.h>
      | ^
a.cc:8:17: error: 'acos' was not declared in this scope
    8 | const double pi=acos(-1);
      |                 ^~~~
a.cc: In function 'int main()':
a.cc:35:3: error: 'cin' was not declared in this scope
   35 |   cin >> n >> k;
      |   ^~~
a.cc:37:3: error: 'vector' was not declared in this scope
   37 |   vector<ll>a(n);
      |   ^~~~~~
a.cc:37:12: error: expected primary-expression before '>' token
   37 |   vector<ll>a(n);
      |            ^
a.cc:37:13: error: 'a' was not declared in this scope
   37 |   vector<ll>a(n);
      |             ^
a.cc:50:12: error: expected primary-expression before '>' token
   50 |   vector<ll>b(n);
      |            ^
a.cc:50:13: error: 'b' was not declared in this scope
   50 |   vector<ll>b(n);
      |             ^
a.cc:63:3: error: 'cout' was not declared in this scope
   63 |   cout << ans<< endl;
      |   ^~~~
a.cc:63:17: error: 'endl' was not declared in this scope
   63 |   cout << ans<< endl;
      |                 ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std::literals::string_literals;
using i64 = std::int_fast64_t;
using std::cout;
using std::cerr;
using std::endl;
using std::cin;

template<typename T>
std::vector<T> make_v(size_t a){return std::vector<T>(a);}

template<typename T,typename... Ts>
auto make_v(size_t a,Ts... ts){
  return std::vector<decltype(make_v<T>(ts...))>(a,make_v<T>(ts...));
}

int main() {
	int n; i64 k; scanf("%d%lld", &n, &k); std::vector<int> a(n);
	for(int i = 0; i < n; i++) scanf("%d", &a[i]);

	i64 ans = 0, tmp = k * (k - 1) / 2 % MOD;
	const int MOD = 1e9 + 7;
	for(int i = 0; i < n; i++) {
		i64 A = 0, B = 0;
		for(int j = 0; j < n; j++) A += (a[j] > a[i]);
		for(int j = 0; j < i; j++) B += (a[j] > a[i]);

		(ans += tmp * A + B * k) %= MOD;
	}
	printf("%lld\n", ans);
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:46: error: 'MOD' was not declared in this scope
   21 |         i64 ans = 0, tmp = k * (k - 1) / 2 % MOD;
      |                                              ^~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef int64_t ll;
typedef long double ld;
const ll MOD=1000000007;
#define rep(i,n) for(ll i=0;i<(ll)(n);i++)
#define change(a,b) do{ll c=a; a=b; b=c;}while(0)
long long gcd(long long a,long long b){
    ll gcdmax=max(a,b);
    ll gcdmin=min(a,b);
    while(true){
        if(gcdmax%gcdmin==0)break;
        else gcdmax%=gcdmin;
        change(gcdmin,gcdmax);
    }
    return gcdmin;
}
ll powerup(ll N,ll P,ll M){
    if(P==0)return 1;
    else if(P%2==0){
        ll t=powerup(N,P/2,M);
        return t*t%M;
    }
    else return N*powerup(N,P-1,M)%M;
}
int main()
{
  ll N,K;
  cin>>N>>K;
  A[2020]={0};
  rep(i,N) cin>>A[i];
  ll ans=0;
  rep(i,N){
    rep(j,N){
      if(j<i&&A[i]<A[j])ans+=K;
      else if(j>i&&A[i]<A[j])ans+=K-1;
    }
  }
  cout<<ans<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:30:3: error: 'A' was not declared in this scope
   30 |   A[2020]={0};
      |   ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef int64_t ll;
typedef long double ld;
const ll MOD=1000000007;
#define rep(i,n) for(ll i=0;i<(ll)(n);i++)
#define change(a,b) do{ll c=a; a=b; b=c;}while(0)
long long gcd(long long a,long long b){
    ll gcdmax=max(a,b);
    ll gcdmin=min(a,b);
    while(true){
        if(gcdmax%gcdmin==0)break;
        else gcdmax%=gcdmin;
        change(gcdmin,gcdmax);
    }
    return gcdmin;
}
ll powerup(ll N,ll P,ll M){
    if(P==0)return 1;
    else if(P%2==0){
        ll t=powerup(N,P/2,M);
        return t*t%M;
    }
    else return N*powerup(N,P-1,M)%M;
}
int main()
{
  ll N,K;
  cin>>N>>K;
  A[2020]={0};
  rep(i,N) cin>>A[i];
  ll ans=0;
  rep(i,N){
    rep(j,N){
      if(j<i&&A[i]<A[j])ans+=K;
      else if(j>i&&A[i]<A[j])ams+=K-1;
    }
  }
  cout<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:30:3: error: 'A' was not declared in this scope
   30 |   A[2020]={0};
      |   ^
a.cc:36:30: error: 'ams' was not declared in this scope; did you mean 'ans'?
   36 |       else if(j>i&&A[i]<A[j])ams+=K-1;
      |                              ^~~
      |                              ans
Language: C++

#include<iostream>
#include<string>
#include<vector>
#include<iomanip>
#include<algorithm>
#include<queue>
#include<stack>
#include<map>
using namespace std;
#define ll long long
int main(){
    ll N,K,i,j;
    cin >> N >> K;
    ll A[N];
    for(i=0;i<N;i++){
        cin >> A[i];
    }
    ll part=0;
    for(i=0;i<N-1;i++){
        for(j=i+1;j<N;j++){
            if(A[i]>A[j])part++;
        }
    }
    ll ans=part*K%1000000007;
    sort(A,A+N);
    ll same=1;
    ll num=(K*(K-1)/2)%1000000007
    for(i=N-1;i>0;i--){;
        if(A[i]==A[i-1])same++;else {
            ans=(ans+same*i*num)%1000000007; 
            same=1;
        }       
    }
    cout << ans;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:28:5: error: expected ',' or ';' before 'for'
   28 |     for(i=N-1;i>0;i--){;
      |     ^~~
a.cc:28:22: error: expected ';' before ')' token
   28 |     for(i=N-1;i>0;i--){;
      |                      ^
      |                      ;
Language: C++

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

const ll mod = 1e9+7;

int main(){
  ll n, k; cin >> n >> k;
  vector<ll> a(n);
  rep(i,n) cin >> a[i];
  
  ll ans1=0;
  rep(j,n)rep(i,j)
    if(a[i]>a[j]) ans1++;
  
  ll ans2=0;
  rep(i,n)rep(j,n)
    if(a[i]>a[j]) ans2++;
  
  ll ans=(((ans1%mod)*(k%mod))%mod + (ans2%mod)*((k*(k-1)/2l)%mod)%mod)%mod;
  
  cout << ans<< endl;

Compiler output:
a.cc: In function 'int main()':
a.cc:23:22: error: expected '}' at end of input
   23 |   cout << ans<< endl;
      |                      ^
a.cc:8:11: note: to match this '{'
    8 | int main(){
      |           ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define rep(j,n) for(int i=(int)(j);i<(int)(n);i++)
#define int int64_t
int half(vector<int> A,int key){
int ans=0;
  rep(0,N){if(A[i]<key) ans++;}
  return ans;
}
signed main(){
  int ans=0;
  int N,K;
  cin>>N>>K;
  int X=(K-1)*K/2;
  vector<int> A(N);
  rep(0,N) cin>>A[i];
  rep(0,N){int count=0;
           for(int j=i;j<N;j++){if(A.at(j)<A.at(i)) count++;
                               }
           ans+=count*K;
           int Y=half(A,A.at(i));
           ans+=Y*X;
           if(ans>=1000000007) ans%=1000000007;
             }
  cout<<ans<<endl;
}

Compiler output:
a.cc: In function 'int64_t half(std::vector<long int>, int64_t)':
a.cc:7:9: error: 'N' was not declared in this scope
    7 |   rep(0,N){if(A[i]<key) ans++;}
      |         ^
a.cc:3:45: note: in definition of macro 'rep'
    3 | #define rep(j,n) for(int i=(int)(j);i<(int)(n);i++)
      |                                             ^
Language: C++

#include<iostream>
using namespace std;

typedef long long ll;
const ll mod=1e9+7;
ll f[2345678];
ll c[2345678];
ll d[2345678];


ll ksm(ll a,ll b){
	ll res = 1;
	while(b){
		if(b&1) res = res*a%mod;
		a=a*a%mod;
		b>>=1;
	}
	return res;
}
int main()
{
   int n;
   ll k,count=0;
   cin>>n>>k;
   for(int i=0;i<n;i++)  cin>>f[i];
   for(int i=0;i<n;i++)
   {
       for(int j=i+1;j<n;j++)
           if(f[i]>f[j]) c[i]++;
    
       for(int j=0;j<i;j++)
           if(f[i]>f[j]) d[i]++;
    }
    for(int i=0;i<n;i++)
    {    	
		count=(count+c[i]*k%mod*(1+k)%mod*ksm(2,mod-2)%mod)%mod;
    	count=(count+d[i]*(k-1)%mod*k*%mod*ksm(2,mod-2)%mod)%mod;
	}
    cout<<count<<endl;
}
/*  
9 9998765 
9 8 7 6 5 4 3 2 1
*/

Compiler output:
a.cc: In function 'int main()':
a.cc:37:39: error: expected primary-expression before '%' token
   37 |         count=(count+d[i]*(k-1)%mod*k*%mod*ksm(2,mod-2)%mod)%mod;
      |                                       ^
Language: C++

#include<iostream>
using namespace std;

typedef long long ll;
const ll mod=1e9+7;
ll f[2345678];
ll c[2345678];
ll d[2345678];


ll ksm(ll a,ll b){
	ll res = 1;
	while(b){
		if(b&1) rea = res*a%mod;
		a=a*a%mod;
		b>>=1;
	}
	return res;
}
int main()
{
   int n;
   ll k,count=0;
   cin>>n>>k;
   for(int i=0;i<n;i++)  cin>>f[i];
   for(int i=0;i<n;i++)
   {
       for(int j=i+1;j<n;j++)
           if(f[i]>f[j]) c[i]++;
    
       for(int j=0;j<i;j++)
           if(f[i]>f[j]) d[i]++;
    }
    for(int i=0;i<n;i++)
    {    	
		count=(count+c[i]*(k*(1+k)*ksm(2,mod-2))%mod)%mod;
    	count=(count+d[i]*((k-1)*k*ksm(2,mod-2))%mod)%mod;
	}
    cout<<count<<endl;
}
/*  
9 9998765 
9 8 7 6 5 4 3 2 1
*/

Compiler output:
a.cc: In function 'll ksm(ll, ll)':
a.cc:14:25: error: 'rea' was not declared in this scope; did you mean 'res'?
   14 |                 if(b&1) rea = res*a%mod;
      |                         ^~~
      |                         res
Language: C++

#include<bits/stdc++.h>
using namespace std;
const long long mod=1e9+7;
typedef long long ll;
long long a[2100],b[2100],c[2100];
ll p(ll a,ll b,ll mod)
{
    ll ans=0;
    for(;b;b>>=1)
    {
        if(b&1)
        {
            ans=ans+a%mod;
        }
        a=a*2%mod;
    }
    return ans%mod;
}
int main(){
	long long n,m;long long ans=0,sum=0;
	cin>>n>>m;
	for(long long i=0;i<n;i++) cin>>a[i];
	for(long long i=0;i<n-1;i++) {
		for(long long j=i+1;j<n;j++) {
			if(a[i]>a[j]) b[i]++; 
		}
	}
	for(long long i=0;i<n;i++) {
		for(long long j=0;j<n;j++) {
			if(a[i]>a[j]) c[i]++;
		}
	}
	//cout<<ans<<" "<<sum<<endl;
	for(long long i=0;i<n;i++) {
		ans=(ans+b[i]+p(m*(m-1)/2),c[i],mod)%mod;
	}
	cout<<ans%mod<<endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:35:32: error: too few arguments to function 'll p(ll, ll, ll)'
   35 |                 ans=(ans+b[i]+p(m*(m-1)/2),c[i],mod)%mod;
      |                               ~^~~~~~~~~~~
a.cc:6:4: note: declared here
    6 | ll p(ll a,ll b,ll mod)
      |    ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
const long long mod=1e9+7;
typedef long long ll;
long long a[2100],b[2100],c[2100];
ll p(ll a,ll b,ll mod)
{
    ll ans=0;
    for(;b;b>>=1)
    {
        if(b&1)
        {
            ans=ans+a%mod;
        }
        a=a*2%mod;
    }
    return ans%mod;
}
int main(){
	long long n,m;long long ans=0,sum=0;
	cin>>n>>m;
	for(long long i=0;i<n;i++) cin>>a[i];
	for(long long i=0;i<n-1;i++) {
		for(long long j=i+1;j<n;j++) {
			if(a[i]>a[j]) b[i]++; 
		}
	}
	for(long long i=0;i<n;i++) {
		for(long long j=0;j<n;j++) {
			if(a[i]>a[j]) c[i]++;
		}
	}
	//cout<<ans<<" "<<sum<<endl;
	for(long long i=0;i<n;i++) {
		ans=(ans+p(b[i]*2+p(c[i],m-1,mod),m)/2%mod)%mod;
	}
	cout<<ans%mod<<endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:35:27: error: too few arguments to function 'll p(ll, ll, ll)'
   35 |                 ans=(ans+p(b[i]*2+p(c[i],m-1,mod),m)/2%mod)%mod;
      |                          ~^~~~~~~~~~~~~~~~~~~~~~~~~~
a.cc:6:4: note: declared here
    6 | ll p(ll a,ll b,ll mod)
      |    ^
Language: C

#include<bits/stdc++.h>

using namespace std;
const int maxn = 1e5+10;
const int mod = 1e9+7;
typedef long long ll;
//kusucheng 1,2;
/*
ll fm(ll a, ll b,ll mod){
//	ll c = a*b - (ll)((long double)a*b/mod + 0.5)*mod;
//	return c<0?c+mod:c;
    return (a*b - (ll)((long double)a/mod*b)*mod+mod)%mod;
}*/
ll fm(ll a,ll b, ll mod){
	ll ans = 0;
	while(b > 0){
		if(b&1)  ans = (ans+a)%mod;
		a = (a+a)%mod;
		b >>= 1;
	}
	return ans;
}
int main()
{
	int n,k;
	cin >> n >> k;
	int a[maxn],b[maxn];
	for(int i = 0;i < n;i ++)
		cin >> a[i];
	int cnt1 = 0,cnt2 = 0;
	for(int i = 0;i < n-1;i ++){
		for(int j = i+1;j < n;j ++){
			if(a[i] > a[j]) cnt1 ++;
		}
	}
	sort(a,a+n,greater<int>());
	for(int i = 0;i < n-1;i ++){
		for(int j = i+1;j < n;j ++){
			if(a[i] > a[j]) cnt2 ++;
		}
	}
	int x,y;
	if(k%2 == 0) x = k/2,y = k-1;
	else x = k,y = (k-1)/2;
	cout << (fm(cnt1,k,mod)%mod + fm(x,y,mod)*cnt2%mod)%mod << endl;
	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: C++

#include<bits/stdc++.h>
#define vll vector<ll>
#define vi vector<int>
#define vpll vector<pair<ll,ll>>
#define pii pair<int,int>
#define REP(i,a) for(int (i)=0; (i)<(a); (i)++)
#define RREP(i,a) for(int (i)=a-1; (i)>=(0); (i)--)
#define REP2(i,a,b) for(int (i)=(a); (i)<(b); (i)++)
#define MOD 1000000007
#define ALL(v) v.begin(), v.end()
#define m0(x) memset(x,0,sizeof(x))
typedef long long ll;

using namespace std;
ll modpro(ll a, ll b){
  ll ans = 0;
  for(ll i=0;i<b;i++){
    ans += a%MOD;
    ans %= MOD;
  }
  return ans;
}
int main(){
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);

  ll n, k, ans = 0;
  cin >> n >> k;
  vector<ll> a(N);
  vector<ll> c(2001, 0);
  REP(i, n){
    cin >> a[i];
    c[a[i]]++;
  }
  ll x, y;
  REP(i, a.size()){
    x = 0; y = 0;
    REP(j,a.size()){
      if(a[j]<a[i] && j > i) y++;
      if(a[j]<a[i]) x++;
    }
    ans = ans + (K*y)%MOD + x*modpro(K,K-1)/2;
    ans%=MOD;
  }
  cout << ans << endl;



  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:29:16: error: 'N' was not declared in this scope
   29 |   vector<ll> a(N);
      |                ^
a.cc:42:18: error: 'K' was not declared in this scope
   42 |     ans = ans + (K*y)%MOD + x*modpro(K,K-1)/2;
      |                  ^
Language: C++

#include <bits\stdc++.h>
using namespace std;
#define int long long
const int mod = 1e9 + 7;
int quickpow(int m, int p)
{
    int res = 1;
    while (p) {
        if (p & 1)
            res = res * m % mod;
        m = m * m % mod;
        p >>= 1;
    }
    return res;
}
const int maxn = 2005;
int a[maxn];
signed main()
{
    int n, k;
    scanf("%I64d%I64d", &n, &k);
    for (int i = 1; i <= n; i++)
        scanf("%I64d", &a[i]);
    int cnt = 0;
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j < i; j++)
            if (a[i] < a[j])
                cnt++;
    }
    int ans = cnt * k % mod;
    cnt = 0;
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= n; j++)
            if (a[j] > a[i])
                cnt++;
    }
    ans += cnt * k % mod * (k - 1) % mod * quickpow(2, mod - 2) % mod;
    ans %= mod;
    printf("%I64d\n", ans);
    return 0;
}

Compiler output:
a.cc: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 {
  private static final int MOD = 1_000_000_007;
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int K = sc.nextInt();
    int[] A = new int[N];
    for (int i = 0; i < N; i++) {
      A[i] = sc.nextInt();
    }
    // inside A
    int a = 0;
    for (int i = 0; i < N-1; i++) {
      for (int j = i+1; j < N; j++) {
        if (A[i] > A[j]) {
          a++;
        }
      }
    }
    
    Arrays.sort(A);
    int sumP = 0;
    for (int i = N-1; i >= 1; i--) {
      for (int j = i-1; j >= 0; j--) {
        if (A[i] > A[j]) {
          sumP++;
        }
      }
    }
    
    long ans = (((long)a*K)%MOD + ((long)K*(K-1)/2%MOD)*sumP)%MOD)%MOD;
    
    System.out.println(ans);
  }
}

Compiler output:
Main.java:33: error: ';' expected
    long ans = (((long)a*K)%MOD + ((long)K*(K-1)/2%MOD)*sumP)%MOD)%MOD;
                                                                 ^
Main.java:33: error: not a statement
    long ans = (((long)a*K)%MOD + ((long)K*(K-1)/2%MOD)*sumP)%MOD)%MOD;
                                                                   ^
2 errors
Language: C++

#include <iostream>
#include <vector>
#include <iomanip>
#include <stack>
#include <array>
#include <deque>
#include <forward_list>
#include <list>
#include <map>
#include <queue>
#include <set>
#include <unordered_map>
#include <unordered_set>
#include <algorithm>
#include <iterator>
#include <string>
#include <cstring>
#include <fstream>
#include <random>
#include <time.h>
#include <complex>
#include <cmath>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
#define INF 999999999
#define rep(i,n) for(int (i)=0;(i)<n;(i)++)
#define Rrep(i,n) for(int i=n;i>0;i--)
#define arep(a,i,n) for(int i=a;i<n;i++)
#define SORT(v) sort((v).begin(),(v).end())
#define TEMP(type,x,y) do {temp temp=x,x=y,y=temp}while(0)
const int MOD = 1e9 + 7;
 
int main() {
 
	int N
    ll K;
	cin >> N >> K;
 
	vector<int>A;
 
	int count = 0;
 
	for (int i = 0; i < N; i++) {
		int num;
		cin >> num;
		A.push_back(num);
		for (vector<int>::size_type j = 0; j < A.size(); j++) {
			if (A[j] > num) count++;
		}
	}
 
	int count2 = 0;
	for (vector<int>::size_type i = 0; i < A.size(); i++) {
		int cmp = A[i];
		for (vector<int>::size_type j = 0; j < A.size(); j++) {
			if (A[j] > cmp) count2++;
		}
	}
 
	int num2 = count * K + count2 * (K*(K - 1)) / 2;
 
	cout << num2%MOD << endl;
 
 
 
	return 0;
 
}

Compiler output:
a.cc: In function 'int main()':
a.cc:37:5: error: expected initializer before 'll'
   37 |     ll K;
      |     ^~
a.cc:38:16: error: 'N' was not declared in this scope
   38 |         cin >> N >> K;
      |                ^
a.cc:38:21: error: 'K' was not declared in this scope
   38 |         cin >> N >> K;
      |                     ^
Language: C++

#include <iostream>
#include <cstring>
using namespace std;
int bit[2020];
void update(int pos){
 while(pos < 2020){
 	bit[pos]++;
   	pos+=pos&(-pos);
 }
}
int get(int pos){
 int res = 0;
 while(pos > 0){
  res += bit[pos];
   pos -= pos & (-pos);
 }
  return res;
}
const int MOD = 1e9 + 7;
int main(){
 int N, K, A[2020];
  cin >> N >> K;
  long long int K_p = 1LL * K * (K + 1) / 2;
  K_p %= MOD;
  long long int K_m = 1LL * K * (K - 1) / 2;
  K_m %= MOD;
  long long int res = 0;
  for(int i = 0; i < N; i++)cin >> A[i];
  for(int i = N - 1; i >= 0; i--){
   int alpha = get(A[i] - 1);
    res += (K_p * alpha) % MOD;
    assert(res >= 0);
    res %= MOD;
    update(A[i]);
  }
  memset(bit, 0, sizeof bit);
  for(int i = 0; i < N - 1; i++){
   int alpha = get(A[i] - 1);
    res += (K_m * alpha) % MOD;
    assert(res >= 0);
    res %= MOD;
    update(A[i]);
  }
  cout << res << '\n';  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:32:5: error: 'assert' was not declared in this scope
   32 |     assert(res >= 0);
      |     ^~~~~~
a.cc:3:1: note: 'assert' is defined in header '<cassert>'; this is probably fixable by adding '#include <cassert>'
    2 | #include <cstring>
  +++ |+#include <cassert>
    3 | using namespace std;
a.cc:40:5: error: 'assert' was not declared in this scope
   40 |     assert(res >= 0);
      |     ^~~~~~
a.cc:40:5: note: 'assert' is defined in header '<cassert>'; this is probably fixable by adding '#include <cassert>'
Language: C++

#include <iostream>
using namespace std;
int bit[2020];
void update(int pos){
 while(pos < 2020){
 	bit[pos]++;
   	pos+=pos&(-pos);
 }
}
int get(int pos){
 int res = 0;
 while(pos > 0){
  res += bit[pos];
   pos -= pos & (-pos);
 }
  return res;
}
const int MOD = 1e9 + 7;
int main(){
 int N, K, A[2020];
  cin >> N >> K;
  long long int K_p = 1LL * K * (K + 1) / 2;
  K_p %= MOD;
  long long int K_m = 1LL * K * (K - 1) / 2;
  K_m %= MOD;
  long long int res = 0;
  for(int i = 0; i < N; i++)cin >> A[i];
  for(int i = N - 1; i >= 0; i--){
   int alpha = get(A[i] - 1);
    res += K_p * alpha;
    res %= MOD;
    update(A[i]);
  }
  memset(bit, 0, sizeof bit);
  for(int i = 0; i < N - 1; i++){
   int alpha = get(A[i] - 1);
    res += K_m * alpha;
    res %= MOD;
    update(A[i]);
  }
  cout << res << '\n';
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:34:3: error: 'memset' was not declared in this scope
   34 |   memset(bit, 0, sizeof bit);
      |   ^~~~~~
a.cc:2:1: note: 'memset' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    1 | #include <iostream>
  +++ |+#include <cstring>
    2 | using namespace std;
Language: C++

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

int main()
{
  int N,K ;
  cin>>N>>K ;
  int A[N] ;
  for(int i=0;i<N;i++) cin>>A[i] ;
  
  /*A[N]配列での初期転倒数を調べる*/
  int turn_zero=0 ;
  for(int i=0;i<N;i++){
    for(int j=i;j<N;j++){
      if(A[i]>A[j]) turn_zero++ ;
    }
  }
  /*B[K][N]配列での転倒数を調べる*/
  cout<<(turn_zero*K*(K-1)/2)%(pow(10,9+7))<<endl ;
  
  return 0 ;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:30: error: invalid operands of types 'int' and '__gnu_cxx::__promote<double>::__type' {aka 'double'} to binary 'operator%'
   20 |   cout<<(turn_zero*K*(K-1)/2)%(pow(10,9+7))<<endl ;
      |         ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~
      |                           |       |
      |                           int     __gnu_cxx::__promote<double>::__type {aka double}
Language: C++

#include<bits/stdc++.h>
using namespace std;
 
int main()
{
ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  long long int n,k,i,r=0,t;
  cin>>n>>k;
  long long int a[n];
  cin>>a[0];
  for(i=1;i<n;i++)
  { cin>>a[i];
     if(a[i-1]>a[i]) r++;
  }
  if(a[n-1]>a[0] ) r++;
  t=k*r;
  t--;
  cout<<(t%(pow(10,9)+7));
  return 0;
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:11: error: invalid operands of types 'long long int' and '__gnu_cxx::__promote<double>::__type' {aka 'double'} to binary 'operator%'
   20 |   cout<<(t%(pow(10,9)+7));
      |          ~^~~~~~~~~~~~~~
      |          |           |
      |          |           __gnu_cxx::__promote<double>::__type {aka double}
      |          long long int
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
const int N = 2005;
const int mod = 1e9 + 7;
 
int n, k, a[N];
int bigger[N], bigger_all[N];
 
void add(int &x, int y) {
    x += y; while(x >= mod) x -= mod;
}
 
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
 
    cin >> n >> k;
    for (int i = 1; i <= n; ++i) {
        cin >> a[i];
    }
 
    for (int i = 1; i <= n; ++i) {
        for (int j = 1; j < i; ++j) {
            bigger[i] += a[j] > a[i];
        }
        for (int j = 1; j <= n; ++j) {
            bigger_all[i] += a[j] > a[i];
        }
    }
 
    int res = 0;
    int x = (1LL * (k - 1) * k / 2) % mod;
    for (int i = 1; i <= n; ++i) {
        add(res, 1LL * bigger[i] * k % mod);
        add(res, 1LL * x * bigger_all[i] % mod); 
    }
 
    cout << res << endl;
}
#include <bits/stdc++.h>
using namespace std;

const int N = 2005;

Compiler output:
a.cc:44:11: error: redefinition of 'const int N'
   44 | const int N = 2005;
      |           ^
a.cc:4:11: note: 'const int N' previously defined here
    4 | const int N = 2005;
      |           ^
Language: C++

#include<iostream>

#define SIZE 1000000007

using namespace std;

int N, A[2000], bef[2000], aft[2000];
unsigned long long K, k, ans = 0;

void set() {
	for (int i = 0; i < N - 1; i++) {
		for (int j = i + 1; j < N; j++) {
			if		(A[i] > A[j]) aft[i]++;
			else if (A[i] < A[j]) bef[j]++;
		}
	}
}
void solve() {
	unsigned int afterSum = 0, beforeSum = 0;
	for (int i = 0; i < N; i++) {
		afterSum  += aft[i] + bef[i];
		beforeSum += bef[i];
	}

	k = ((K + 1) * K / 2) % SIZE;
	ans = (afterSum * k - beforeSum * K) % SIZE;

}
int main() {
	
	cin >> N >> K;
	memset(bef, 0, sizeof(int) * N);
	memset(aft, 0, sizeof(int) * N);

	for (int i = 0; i < N; i++) {
		cin >> A[i];
	}
	set();
	solve();

	cout << ans;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:32:9: error: 'memset' was not declared in this scope
   32 |         memset(bef, 0, sizeof(int) * N);
      |         ^~~~~~
a.cc:2:1: note: 'memset' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    1 | #include<iostream>
  +++ |+#include <cstring>
    2 |
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
 
int main() {
    long long n,k,i,ans,coleft,cof,j;
    long long mod=1000000007;
    coall=0;
    cof=0;
    ans=0;
    cin>>n>>k;
    vector<int> vec(n);
    for(i=0;i<n;i++){
      cin>>vec[i];
    }
    for(i=0;i<n;i++){
      for(j=0;j<i;j++){
        if(vec[i]>vec[j]){
          coleft++;
        }
      }
      for(j=i;j<n;j++){
        if(vec[i]>vec[j]){
          cof++;
        }
      }
      ans+=((coleft+cof)*((k-1)%mod*k%mod)/2)%mod;
      coleft=0;
      ans+=cof*k%mod;
      cof=0;
    }
  ans=ans%mod;
  cout<<ans<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:5: error: 'coall' was not declared in this scope
    9 |     coall=0;
      |     ^~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
 
int main() {
    long long n,k,i,ans,coleft,cof,j;
    long long mod=1000000007;
    coall=0;
    cof=0;
    ans=0;
    cin>>n>>k;
    vector<int> vec(n);
    for(i=0;i<n;i++){
      cin>>vec[i];
    }
    for(i=0;i<n;i++){
      for(j=0;j<i;j++){
        if(vec[i]>vec[j]){
          coleft++;
        }
      }
      for(j=i;j<n;j++){
        if(vec[i]>vec[j]){
          cof++;
        }
      }
      ans+=((coleft+cof)*((k-1)%mod*k%mod)/2)%mod;
      coall=0;
      ans+=cof*k%mod;
      cof=0;
    }
  ans=ans%mod;
  cout<<ans<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:5: error: 'coall' was not declared in this scope
    9 |     coall=0;
      |     ^~~~~
Language: C++

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

int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  long long int i,j,n,c=0,k,val;string s="",str="";
  cin>>n>>k;
  for(i=0;i<n;i++)
  {
    cin>>val;
    str=str+to_string(val);
  }
  for(i=0;i<k;i++)
  {
    s+=str;
  }
  for(i=0;i<s.size();i++)
  {
    for(j=i+;j<s.size();j++)
    {
      if(s[i]<s[j])
        c++;
    }
  }
  cout<<(c%1000000007);
}


  

Compiler output:
a.cc: In function 'int main()':
a.cc:22:13: error: expected primary-expression before ';' token
   22 |     for(j=i+;j<s.size();j++)
      |             ^
Language: Java

public class Main {
	public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner scanner = new Scanner(System.in);

		int N = scanner.nextInt();

		int K = scanner.nextInt();

		int[] scannerArray = new int[N];

		for (int index = 0; index < N; index++) {
			scannerArray[index] = scanner.nextInt();
		}

		int[] array = new int[N*K];

		for(int indexK = 0; indexK < K; indexK++) {
			for(int indexN = 0; indexN < N; indexN++) {
				array[indexK*N + indexN] = scannerArray[indexN];
			}
		}

//		int[] array = {3, 2, 1, 3, 2, 1,3,2,1,3,2,1,3,2,1,3,2,1};





		log(countSwapBabbleSort(array) % (1000000000 + 7));


	}


	/**
	 * バブルソートの交換数を算出
	 * ※転倒数
	 * @param array
	 * @return
	 */
	private static int countSwapBabbleSort(int[] array) {
		int ans = 0;
		int[] binary = new int[array.length + 1];

		for (int index = 0; index < array.length; index++) {
			ans = ans + (index - sum(binary, array[index]));
			add(binary, array[index], 1);
		}
		return ans;
	}

    //add value at idx on bit O(logN)
	private static void add(int[] bit,int idx,int value) {
        for(int i=idx;i<bit.length;i=i+(i&-i)) {
        	bit[i] += value;
        }
    }

    //return sum [1,idx] O(logN)
	private static int sum(int[] bit,int idx) {
        int ret = 0;
        for(int i=idx;i>0;i-=(i&-i)) {
        	ret += bit[i];
        }
        return ret;
    }

	private static void log(String str) {
		System.out.println(str);
	}

	private static void log(int str) {
		System.out.println(str);
	}

	private static void log(double str) {
		System.out.println(str);
	}


Compiler output:
Main.java:79: error: reached end of file while parsing
	}
	 ^
1 error
Language: Java

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.Scanner;

public class jsc2019B {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(new BufferedReader(new InputStreamReader(System.in)));
        int N = scanner.nextInt();
        long K = scanner.nextLong();
        long[] A = new long[N];
        for(int i = 0; i < N; i++){
            A[i] = scanner.nextInt();
        }
        long countInversions = 0;
        for(int i = 0; i < N; i++){
            long innerCount = 0;
            for(int j = i + 1; j < N; j++){
                if(A[i] > A[j]){
                    innerCount++;
                }
            }
            countInversions = countInversions + innerCount * K;
        }
        Arrays.sort(A);
        int i = 0;
        long mod = (long)(Math.pow(10, 9) + 7);
        while(i < N){
            int start = i;
            while(i < N && A[start] == A[i]){
                i++;
            }
            long temp = (i - start);

            long add = temp*start*(K - 1)*(K)/2;
            add = add % mod;
            countInversions = countInversions % mod;

            countInversions = (countInversions + add) % mod;
        }
        System.out.println(countInversions);

    }
}


Compiler output:
Main.java:6: error: class jsc2019B is public, should be declared in a file named jsc2019B.java
public class jsc2019B {
       ^
1 error
Language: C++

#include <bits/stdc++.h>
#define int long long
#define boost() ios_base :: sync_with_stdio(0); cin.tie(); cout.tie(); cout << fixed; cout << setprecision(15); srand(time(NULL))
#define all(x) x.begin(), x.end()
using namespace std;

const mod = (int)1e9 + 7;
int n, k, res = 0;
int a[2010];
int x[2010];
int y[2010];

int add (int i, int j) {
  return (i + j) % mod;
}

int mul (int i, int j) {
  return (i * j) % mod;
}

signed main () {
  cin >> n >> k;
  for (int i = 0; i < n; i++) cin >> a[i];
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < n; j++) {
      if (a[i] > a[j]) {
        x[i]++;
        y[i] += (i < j);
      }
    }
  }
  for (int i = 0; i < n; i++) {
    res = res + x[i] * k * (k - 1) / 2 + y[i] * k;
    int sum = (k  * (k - 1) / 2) % mod;
    res = add (res, mul (x[i], sum));
    res = add (res, mul (y[i], k));
  }
  cout << res << endl;
  return 0;
} 

Compiler output:
a.cc:7:7: error: 'mod' does not name a type
    7 | const mod = (int)1e9 + 7;
      |       ^~~
a.cc: In function 'long long int add(long long int, long long int)':
a.cc:14:20: error: 'mod' was not declared in this scope; did you mean 'modf'?
   14 |   return (i + j) % mod;
      |                    ^~~
      |                    modf
a.cc: In function 'long long int mul(long long int, long long int)':
a.cc:18:20: error: 'mod' was not declared in this scope; did you mean 'modf'?
   18 |   return (i * j) % mod;
      |                    ^~~
      |                    modf
a.cc: In function 'int main()':
a.cc:34:36: error: 'mod' was not declared in this scope; did you mean 'modf'?
   34 |     int sum = (k  * (k - 1) / 2) % mod;
      |                                    ^~~
      |                                    modf
Language: C++

// JSPG-B.cpp : このファイルには 'main' 関数が含まれています。プログラム実行の開始と終了がそこで行われます。
//

#include "pch.h"
#include <iostream>
#include <vector>

using namespace std;
int main()
{
	long long mod = 1000000000+7;
	int N, K;
	cin >> N >> K;
	vector <int>A(N);
	vector <int>A2(N * 2);
	for (int i = 0; i < N; i++)
	{
		cin >> A.at(i);
		A2.at(i) = A.at(i);
		A2.at(i + N) = A.at(i);
	}
	// 整数列Aひとつの中の転倒数、これをK倍する
	long long count_A = 0;
	for (int j = 0; j < N; j++)
	{
		for (int k = j+1; k < N; k++)
		{
			if (A.at(j) > A.at(k)) {
				count_A++;
			}
		}
	}
	// 整数列Aふたつの中での転倒数、これをK(K-1)/2倍する
	long long count_A2 = 0;
	for (int l = 0; l < N; l++)
	{
		for (int m = N; m < N*2; m++)
		{
			if (A2.at(l)>A2.at(m))
			{
				count_A2++;
			}
		}
	}
	long long ans = count_A*K%mod+((count_A2 * K)%mod*(K - 1)%mod/ 2)%mod;
	cout << ans%mod << endl;
}


Compiler output:
a.cc:4:10: fatal error: pch.h: No such file or directory
    4 | #include "pch.h"
      |          ^~~~~~~
compilation terminated.
Language: C++

#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <vector>
#include <cstring>
#include <queue>
#include <set>
#include <string>
#include <functional>
#include <cassert>
#include <cmath>
#define SIZE 2005
#define MOD 1000000007
 
using namespace std;
typedef long long int ll;
typedef pair <int,int> P;

int A[SIZE];

int main()
{
    int n;
    scanf("%d", &n);
    ll K;
    scanf("%lld", &K);
    for (int i=0; i<n; i++) scanf("%d", &A[i]);

    int ret[SIZE];
    int cnt = 0;
    ll ans = 0
    for (int i=0; i<n; i++)
    {
        for (int j=0; j<n; j++)
        {
            if (A[i] > A[j]) ret[i]++;
            if (A[i] > A[j] && i < j) cnt++;
            else if (A[i] > A[j]) ans -= 1LL;
        }
    }

    ans += (cnt * K) % MOD; 
    for (int i=0; i<n; i++)
    {
        ans += (ret[i] * K * (K-1) / 2LL) % MOD;
        if (ans>=MOD) ans-=MOD;
    }

    printf("%lld\n", ans);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:32:5: error: expected ',' or ';' before 'for'
   32 |     for (int i=0; i<n; i++)
      |     ^~~
a.cc:32:19: error: 'i' was not declared in this scope
   32 |     for (int i=0; i<n; i++)
      |                   ^
Language: C++

#include<iostream>
#include<cmath>
using namespace std;
int main(){
  int n;
  unsigned long long k,counta=0,countb=0,count;
  cin >> n >> k;
  int a[n];
  for(int i=0;i<=n-1;i++){
    cin >> a[i];
  }
  for(int i=0;i<=n-1;i++){
    unsigned long long s=0,t=0;
    for(int j=i;j<=n-1;j++){
      if(a[i]>a[j]){
        s++ ;
      }
    }
    for(int j=0;j<=i;j++){
      if(a[i]>a[j]){
        t++ ;
      }
    }
    counta = k(k+1)/2 % 1000000007;
    counta = (counta * s) % 1000000007;
    countb = k(k-1)/2 % 1000000007;
    countb = (countb * t) % 1000000007;
    count += (counta + countb) % 1000000007;
  }
  cout << count;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:15: error: 'k' cannot be used as a function
   24 |     counta = k(k+1)/2 % 1000000007;
      |              ~^~~~~
a.cc:26:15: error: 'k' cannot be used as a function
   26 |     countb = k(k-1)/2 % 1000000007;
      |              ~^~~~~
Language: C

#include <stdio.h>
#define long long long int

const int MOD = 1000000007;

int main(void)
{
  int N;
  long long int K;
  scanf("%d %lld", &N, &K);
  int A[N];
  for (int i = 0; i < N; i++)
    scanf("%d", &A[i]);
  int n1 = 0;
  int n2 = 0;
  for (int i = 0; i < N; i++) {
      int Ai = A[i];
      for (int j = 0; j < i; j++)
          if(Ai > A[j])
              n1++;
      for (int j = i+1; j < N; j++)
          if(Ai > A[j])
              n2++;
  }
  printf("K = %ld\nn1 = %d\nn2 = %d\n", K, n1, n2);
  long long int num = K*(K-1)/2%MOD*n1+K*(K+1)/2%MOD*n2;
  printf("%lld\n", num%MOD);
  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:2:14: error: 'long long long' is too long for GCC
    2 | #define long long long int
      |              ^~~~
main.c:9:8: note: in expansion of macro 'long'
    9 |   long long int K;
      |        ^~~~
main.c:2:19: error: 'long long long' is too long for GCC
    2 | #define long long long int
      |                   ^~~~
main.c:9:8: note: in expansion of macro 'long'
    9 |   long long int K;
      |        ^~~~
main.c:2:24: error: two or more data types in declaration specifiers
    2 | #define long long long int
      |                        ^~~
main.c:9:8: note: in expansion of macro 'long'
    9 |   long long int K;
      |        ^~~~
main.c:9:13: error: two or more data types in declaration specifiers
    9 |   long long int K;
      |             ^~~
main.c:2:14: error: 'long long long' is too long for GCC
    2 | #define long long long int
      |              ^~~~
main.c:26:8: note: in expansion of macro 'long'
   26 |   long long int num = K*(K-1)/2%MOD*n1+K*(K+1)/2%MOD*n2;
      |        ^~~~
main.c:2:19: error: 'long long long' is too long for GCC
    2 | #define long long long int
      |                   ^~~~
main.c:26:8: note: in expansion of macro 'long'
   26 |   long long int num = K*(K-1)/2%MOD*n1+K*(K+1)/2%MOD*n2;
      |        ^~~~
main.c:2:24: error: two or more data types in declaration specifiers
    2 | #define long long long int
      |                        ^~~
main.c:26:8: note: in expansion of macro 'long'
   26 |   long long int num = K*(K-1)/2%MOD*n1+K*(K+1)/2%MOD*n2;
      |        ^~~~
main.c:26:13: error: two or more data types in declaration specifiers
   26 |   long long int num = K*(K-1)/2%MOD*n1+K*(K+1)/2%MOD*n2;
      |             ^~~
Language: Java

#include <stdio.h>
#define long long long int

const int MOD = 1000000007;

int main(void)
{
  int N;
  long long int K;
  scanf("%d %lld", &N, &K);
  int A[N];
  for (int i = 0; i < N; i++)
    scanf("%d", &A[i]);
  int n1 = 0;
  int n2 = 0;
  for (int i = 0; i < N; i++) {
      int Ai = A[i];
      for (int j = 0; j < i; j++)
          if(Ai > A[j])
              n1++;
      for (int j = i+1; j < N; j++)
          if(Ai > A[j])
              n2++;
  }
  printf("K = %ld\nn1 = %d\nn2 = %d\n", K, n1, n2);
  long long int num = K*(K-1)/2%MOD*n1+K*(K+1)/2%MOD*n2;
  printf("%lld\n", num%MOD);
  return 0;
}


Compiler output:
Main.java:1: error: illegal character: '#'
#include <stdio.h>
^
Main.java:1: error: class, interface, enum, or record expected
#include <stdio.h>
         ^
Main.java:2: error: illegal character: '#'
#define long long long int
^
Main.java:9: error: not a statement
  long long int K;
  ^
Main.java:9: error: not a statement
  long long int K;
       ^
Main.java:11: error: not a statement
  int A[N];
        ^
Main.java:26: error: not a statement
  long long int num = K*(K-1)/2%MOD*n1+K*(K+1)/2%MOD*n2;
  ^
Main.java:26: error: not a statement
  long long int num = K*(K-1)/2%MOD*n1+K*(K+1)/2%MOD*n2;
       ^
Main.java:6: error: unnamed classes are a preview feature and are disabled by default.
int main(void)
^
  (use --enable-preview to enable unnamed classes)
Main.java:6: error: <identifier> expected
int main(void)
             ^
Main.java:9: error: ';' expected
  long long int K;
      ^
Main.java:9: error: ';' expected
  long long int K;
           ^
Main.java:10: error: illegal start of expression
  scanf("%d %lld", &N, &K);
                   ^
Main.java:10: error: illegal start of expression
  scanf("%d %lld", &N, &K);
                       ^
Main.java:11: error: ';' expected
  int A[N];
         ^
Main.java:13: error: illegal start of expression
    scanf("%d", &A[i]);
                ^
Main.java:26: error: ';' expected
  long long int num = K*(K-1)/2%MOD*n1+K*(K+1)/2%MOD*n2;
      ^
Main.java:26: error: ';' expected
  long long int num = K*(K-1)/2%MOD*n1+K*(K+1)/2%MOD*n2;
           ^
18 errors
Language: C

#include <stdio.h>
#define MOD 1000000007

int main()
{   long long n,k;
    scanf("%lld%lld",&n,&k);
    long long a[2001];
    for(int i=0;i<n;i++){
        scanf("%lld",&a[i]);
    }
    long long front=0,rear=0;
    for(int i=0;i<n;i++){
        for(int j=i+1;j<n;j++){
            if(a[i]>a[j]){
                rear++;
                //printf("b[%d].r increased @%d\n",i,j);
            }
        }
    }
        for(int j=0;j<i;j++){
            if(a[i]>a[j]){
                front++;
                //printf("b[%d].f increased @%d\n",i,j);
            }
        }
    long long ans=0;
  
        ans+=((rear+front)*(k-1)*k/2)%MOD+rear*k;
        
    printf("%lld",ans%MOD);

    return 0;
}


Compiler output:
main.c: In function 'main':
main.c:20:23: error: 'i' undeclared (first use in this function)
   20 |         for(int j=0;j<i;j++){
      |                       ^
main.c:20:23: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>
#define MOD 1000000007;


int main()
{   long long n,k;
    scanf("%lld%lld",&n,&k);
    long long a[2001];
    for(int i=0;i<n;i++){
        scanf("%lld",&a[i]);
    }
    long long front=0,rear=0;
    for(int i=0;i<n;i++){
        for(int j=0;j<i;j++){
            if(a[i]>a[j]){
                front++
                //printf("b[%d].f increased @%d\n",i,j);
            }
        }for(int j=i+1;j<n;j++){
            if(a[i]>a[j]){
                rear++;
                //printf("b[%d].r increased @%d\n",i,j);
            }
        }
    }
    long long ans=0;
    for(int i=0;i<n;i++){
        ans+=(front*(k-1)*k/2)%MOD;
        ans%=MOD;
        ans+=(rear*(k-1)*k/2)%MOD;
        ans%=MOD;
    }
    

    
    printf("%lld",ans);

    return 0;
}


Compiler output:
main.c: In function 'main':
main.c:16:24: error: expected ';' before '}' token
   16 |                 front++
      |                        ^
      |                        ;
   17 |                 //printf("b[%d].f increased @%d\n",i,j);
   18 |             }
      |             ~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main(){
  int n;
  long k;
  cin >> n >> k;
  int a[n];
  for (int i = 0; i < n; i++){
    cin >> a[i];
  }
 
  int inner = 0;
  int outer = 0;
 
  for (int i = 0; i < n; i++){
    for (int j = 0; j < n; j++){
    	if( a[i] <= a[j]) {
				continue;
			}
		
     	 outer++;
			if( j >= i ){
				inner++;
			}
    }
  }
  long mod = 1000000007;
 long ans = k * (k - 1) / 2 % mod;
	ans = (ans*outer + k*inner) % mod
  cout << ans << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:30:42: error: expected ';' before 'cout'
   30 |         ans = (ans*outer + k*inner) % mod
      |                                          ^
      |                                          ;
   31 |   cout << ans << endl;
      |   ~~~~
Language: C++

#include<bits/stdc++.h>

#define ALL(v) v.begin(), v.end()
#define REP(i, n) for(int i = 0; i < n; i++)
#define REPR(i, n) for(int i = n; i >= 0; i--)
#define FOR(i, m, n) for(int i = m; i < n; i++)

using namespace std;
int main() {

	long long n, k;
	cin >> n >> k;

	long long X = (k * (k + 1)) / 2;


	vector<long long> A(n);
	for (int i = 0; i < n; i++)
	{
		cin >> A[i];
	}

	long long total = 0;
	for (int i = 0; i < n - 1; i++)
	{
		for (int j = i + 1; j < n; j++)
		{
			if (A[i] > A[j]) {
				total++;
			}
		}
	}


	cout << long long(X * total) % 1000000007;


}

Compiler output:
a.cc: In function 'int main()':
a.cc:35:17: error: expected primary-expression before 'long'
   35 |         cout << long long(X * total) % 1000000007;
      |                 ^~~~