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

#include <assert.h>
#include <chrono>
#include <cstdio>
#include <iostream>
#include <limits.h>
#include <mutex>
#include <thread>
#include <vector>

long long evalmod(long long a, long long b){
  long long maxval = std::max(a, b);
  long long minval = std::min(a, b);
  if (minval==0){
    return maxval;
  }
  long long tmpval = a%b;
  return evalmod(b, tmpval);
}

int main(){
  int N;
  long long M;
  scanf("%d",&N);
  scanf("%lld",&M);
  std::vector<long long > a(N);
  for (int i=0; i<N; i++){
    scanf("%lld",&a[i]);
  }
  long long mod;
  long long val = a[0];
  bool invald = false;
  for (int i=1; i<N; i++){
    mod = evalmod(a[i],val);
    val = val/mod*a[i];
    if (val>2*M){
      invald = true;
    }
  }
  if (invalid){
    printf("0\n");
    return 0;
  }
  long long ans = (M+val*0.5)/val;
  //std::cout<<eval
  //printf("%lld\n",mod);
  //printf("%lld\n",val);
  printf("%lld\n",ans);
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:39:7: error: 'invalid' was not declared in this scope; did you mean 'invald'?
   39 |   if (invalid){
      |       ^~~~~~~
      |       invald
Language: C++

#include <bits/stdc++.h>

using namespace std;

using int64 = long long;
const int mod = 1e9 + 7;

const int64 infll = (1LL << 60) - 1;
const int inf = (1 << 30) - 1;

struct IoSetup {
  IoSetup() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(10);
    cerr << fixed << setprecision(10);
  }
} iosetup;


template< typename T1, typename T2 >
ostream &operator<<(ostream &os, const pair< T1, T2 > &p) {
  os << p.first << " " << p.second;
  return os;
}

template< typename T1, typename T2 >
istream &operator>>(istream &is, pair< T1, T2 > &p) {
  is >> p.first >> p.second;
  return is;
}

template< typename T >
ostream &operator<<(ostream &os, const vector< T > &v) {
  for(int i = 0; i < (int) v.size(); i++) {
    os << v[i] << (i + 1 != v.size() ? " " : "");
  }
  return os;
}

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

template< typename T1, typename T2 >
inline bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); }

template< typename T1, typename T2 >
inline bool chmin(T1 &a, T2 b) { return a > b && (a = b, true); }

template< typename T = int64 >
vector< T > make_v(size_t a) {
  return vector< T >(a);
}

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

template< typename T, typename V >
typename enable_if< is_class< T >::value == 0 >::type fill_v(T &t, const V &v) {
  t = v;
}

template< typename T, typename V >
typename enable_if< is_class< T >::value != 0 >::type fill_v(T &t, const V &v) {
  for(auto &e : t) fill_v(e, v);
}

template< typename F >
struct FixPoint : F {
  FixPoint(F &&f) : F(forward< F >(f)) {}

  template< typename... Args >
  decltype(auto) operator()(Args &&... args) const {
    return F::operator()(*this, forward< Args >(args)...);
  }
};

template< typename F >
inline decltype(auto) MFP(F &&f) {
  return FixPoint< F >{forward< F >(f)};
}

int main() {
  int64 N, M;
  cin >> N >> M;
  M *= 2;
  vector< int64 > A(N);
  cin >> A;
  __int128_t lcm = 1;
  for(int i = 0; i < N; i++) {
    lcm = lcm / __gcd(lcm, __int128_t(A[i])) * A[i];
    if(lcm > infll\) {
      cout << 0 << endl;
      return 0;
    }
  }
  cout << (int64) ((M + lcm) / (lcm * 2)) << endl;
}



Compiler output:
a.cc:97:19: error: stray '\' in program
   97 |     if(lcm > infll\) {
      |                   ^
Language: C++

import fractions

n, m = map(int, input().split())
a = list(map(int, input().split()))
a = list(set(a))
n = len(a)
for i in range(n):
  a[i]//=2

gd = a[0]

for i in range(1,n):
  gd = fractions.gcd(gd, a[i])
  if (gd==1):
    break

sm = 1

for i in range(n):
  sm *= a[i]
  if (sm // gd > m):
    print(0)
    exit(0)

sm //= gd
m //= sm
m -= 1
m //= 2

print(m+1)

Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import fractions
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define im 2147483647
#define lm 9223372036854775807
#define ll long long
#define vb vector<bool>
#define vi vector<int>
#define vl vector<long long>
#define vvi vector<vector<int>>
#define ii pair<int, int>
#define lower_str(s) transform(s.begin(), s.end(), s.begin(), ::tolower)
#define upper_str(s) transform(s.begin(), s.end(), s.begin(), ::toupper)
#define debug(index, num) cout << "Case #" << index << ": " << num << endl
#define mx(an, na) an = max(an, na)
#define mn(an, na) an = min(an, na)
#define rep(i, a, b) for (long long i = a; i < b; i++)
#define rep2(i, a, b) for (long long i = a; i <= b; i++)
#define repp(i, a, b) for (long long i = a; i >= b; i--)
#define repp2(i, a, b) for (long long i = a - 1; i >= b; i--)
#define be(x) x.begin(), x.end()
#define rbe(x) x.rbegin(), x.rend()
#define pb push_back   

int gcd(int a, int b) {
    if (b == 0) 
        return a; 
    return gcd(b, a % b); 
}
ll findlcm(vi v, int n) {
    ll ans = v[0];
    for (int i = 1; i < n; i++) 
        ans = (((arr[i] * ans)) / 
                (gcd(arr[i], ans))); 
    return ans;
}
int main () {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    int n, m;
    cin >> n >> m;
    vi v(n);
    rep(i, 0, n) cin >> v[i];
    ll lcm = findlcm(v, n);
    ll i = 1;
    ll ans = 0;
    while(lcm * i <= M) {
        ans++;
        i++;
    }
    cout << ans;
    return 0;
}   


// typedef long long int ll; 
// int gcd(int a, int b) 
// { 
//     if (b == 0) 
//         return a; 
//     return gcd(b, a % b); 
// } 
  
// ll findlcm(int arr[], int n) 
// { 
//     // Initialize result 
//     ll ans = arr[0]; 
  
//     // ans contains LCM of arr[0], ..arr[i] 
//     // after i'th iteration, 
//     for (int i = 1; i < n; i++) 
//         ans = (((arr[i] * ans)) / 
//                 (gcd(arr[i], ans))); 
  
//     return ans; 
// } 
// int main() 
// { 
//     int arr[] = { 2, 7, 3, 9, 4 }; 
//     int n = sizeof(arr) / sizeof(arr[0]); 
//     printf("%lld", findlcm(arr, n)); 
//     return 0; 
// } 

Compiler output:
a.cc: In function 'long long int findlcm(std::vector<int>, int)':
a.cc:32:18: error: 'arr' was not declared in this scope
   32 |         ans = (((arr[i] * ans)) /
      |                  ^~~
a.cc: In function 'int main()':
a.cc:47:22: error: 'M' was not declared in this scope
   47 |     while(lcm * i <= M) {
      |                      ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define im 2147483647
#define lm 9223372036854775807
#define ll long long
#define vb vector<bool>
#define vi vector<int>
#define vl vector<long long>
#define vvi vector<vector<int>>
#define ii pair<int, int>
#define lower_str(s) transform(s.begin(), s.end(), s.begin(), ::tolower)
#define upper_str(s) transform(s.begin(), s.end(), s.begin(), ::toupper)
#define debug(index, num) cout << "Case #" << index << ": " << num << endl
#define mx(an, na) an = max(an, na)
#define mn(an, na) an = min(an, na)
#define rep(i, a, b) for (long long i = a; i < b; i++)
#define rep2(i, a, b) for (long long i = a; i <= b; i++)
#define repp(i, a, b) for (long long i = a; i >= b; i--)
#define repp2(i, a, b) for (long long i = a - 1; i >= b; i--)
#define be(x) x.begin(), x.end()
#define rbe(x) x.rbegin(), x.rend()
#define pb push_back   

int gcd(int a, int b) {
    if (b == 0) 
        return a; 
    return gcd(b, a % b); 
}
ll findlcm(vi v, int n) {
    ll ans = v[0];
    for (int i = 1; i < n; i++) 
        ans = (((arr[i] * ans)) / 
                (gcd(arr[i], ans))); 
    return ans;
}
int main () {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    int n, m;
    cin >> n >> m;
    vi v(n);
    rep(i, 0, n) cin >> v[i];
    ll lcm = findlcm(v, n);
    ll i = 1;
    ll ans = 0;
    while(lcm * i <= 2*M) {
        ans++;
        i++;
    }
    cout << ans;
    return 0;
}   


// typedef long long int ll; 
// int gcd(int a, int b) 
// { 
//     if (b == 0) 
//         return a; 
//     return gcd(b, a % b); 
// } 
  
// ll findlcm(int arr[], int n) 
// { 
//     // Initialize result 
//     ll ans = arr[0]; 
  
//     // ans contains LCM of arr[0], ..arr[i] 
//     // after i'th iteration, 
//     for (int i = 1; i < n; i++) 
//         ans = (((arr[i] * ans)) / 
//                 (gcd(arr[i], ans))); 
  
//     return ans; 
// } 
// int main() 
// { 
//     int arr[] = { 2, 7, 3, 9, 4 }; 
//     int n = sizeof(arr) / sizeof(arr[0]); 
//     printf("%lld", findlcm(arr, n)); 
//     return 0; 
// } 

Compiler output:
a.cc: In function 'long long int findlcm(std::vector<int>, int)':
a.cc:32:18: error: 'arr' was not declared in this scope
   32 |         ans = (((arr[i] * ans)) /
      |                  ^~~
a.cc: In function 'int main()':
a.cc:47:24: error: 'M' was not declared in this scope
   47 |     while(lcm * i <= 2*M) {
      |                        ^
Language: C++


// Problem : D - Semi Common Multiple
// Contest : AtCoder Beginner Contest 150
// URL : https://atcoder.jp/contests/abc150/tasks/abc150_d
// Memory Limit : 1024.000000 MB 
// Time Limit : 2000.000000 milisec 
// Powered by CP Editor (https://github.com/coder3101/cp-editor2)

#include<bits/stdc++.h>
using namespace std;
 
#define int long long
#define ll long long
#define IOS ios::sync_with_stdio(false); cin.tie(nullptr);
 
const int N = 3e5+5;
const int MOD = 1e9+7;

int gcd(int a, int b) 
{ 
    if (b == 0) 
        return a; 
    return gcd(b, a % b); 
} 
  
// Returns LCM of array elements 
ll findlcm(int arr[], int n) 
{  
    ll ans = arr[0];  
    for (int i = 1; i < n; i++) 
        ans = (((arr[i] * ans)) / 
                (gcd(arr[i], ans))); 
  
    return ans; 
} 
int a[N];
int32_t main()
{
    	IOS;
	int n, m, g = 0;
	cin >> n >> m;
	for(int i = 0; i < n; i++)
	{
		cin >> a[i];
		a[i] /= 2;
	}	
	int l = findlcm(a, n);
	cerr << l << endl;
	double fac = 1;
	for(double )
	int ans = ceil((m-l)/(2.0*l));
	if(ans < 0)
		cout << 0 << endl;
	cout << ans << endl;

    	return 0;
}

Compiler output:
a.cc: In function 'int32_t main()':
a.cc:50:20: error: expected unqualified-id before ')' token
   50 |         for(double )
      |                    ^
a.cc:50:19: error: expected ';' before ')' token
   50 |         for(double )
      |                   ^~
      |                   ;
a.cc:50:20: error: expected primary-expression before ')' token
   50 |         for(double )
      |                    ^
a.cc:50:19: error: expected ';' before ')' token
   50 |         for(double )
      |                   ^~
      |                   ;
a.cc:52:12: error: 'ans' was not declared in this scope; did you mean 'abs'?
   52 |         if(ans < 0)
      |            ^~~
      |            abs
a.cc:54:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   54 |         cout << ans << endl;
      |                 ^~~
      |                 abs
Language: C++

#include<stdio.h>
#include<stdlib.h>
#include<iostream>
#include<string>
#include<algorithm>
#include<vector> 
#include<limits>
#include<numeric>
#include<type_traits>
#include<math.h>
#include<fstream>
#include<set>
#include<queue>
using namespace std;
typedef long long ll;

#define rep(i, n) for(int i = 0; i < (int)(n); i++)
#define repi(i,a,b) for(int i = (int)(a); i < (int)(b); i++)
#define out(str) cout << str << endl
#define ALL(a) (a).begin(),(a).end()
#define INF (1<<29)

template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }

ll gcd(ll a, ll b) {
  return b != 0 ? gcd(b, a % b) : a;
}
ll lcm(ll a, ll b) {
    if(is_product_overflow(a / gcd(a, b),b)){
        return 100000000000;
    }
  return a / gcd(a, b) * b;
}

bool is_product_overflow(long a, long b) {

	long prod = a * b;
	
	return (prod / b != a);
}

ll N,M,A=1,tmpA;

int main(){
    cin>>N>>M;
    rep(i,N){
        cin>>tmpA;
        
        A=lcm(A,tmpA);
        if(A>M*3){
            out(0);
            return 0;
        }
    }
    out((M+A/2)/A);
    

}


Compiler output:
a.cc: In function 'll lcm(ll, ll)':
a.cc:30:8: error: 'is_product_overflow' was not declared in this scope
   30 |     if(is_product_overflow(a / gcd(a, b),b)){
      |        ^~~~~~~~~~~~~~~~~~~
Language: C++

/*やったぜ。　投稿者：変態糞土方 (8月16日（水）07時14分22秒)

昨日の8月15日にいつもの浮浪者のおっさん（60歳）と先日メールくれた汚れ好きの土方のにいちゃん

（45歳）とわし（53歳）の3人で県北にある川の土手の下で盛りあったぜ。

今日は明日が休みなんでコンビニで酒とつまみを買ってから滅多に人が来ない所なんで、

そこでしこたま酒を飲んでからやりはじめたんや。

3人でちんぽ舐めあいながら地下足袋だけになり持って来たいちぢく浣腸を3本ずつ入れあった。

しばらくしたら、けつの穴がひくひくして来るし、糞が出口を求めて腹の中でぐるぐるしている。

浮浪者のおっさんにけつの穴をなめさせながら、兄ちゃんのけつの穴を舐めてたら、

先に兄ちゃんがわしの口に糞をドバーっと出して来た。

それと同時におっさんもわしも糞を出したんや。もう顔中、糞まみれや、

3人で出した糞を手で掬いながらお互いの体にぬりあったり、

糞まみれのちんぽを舐めあって小便で浣腸したりした。ああ～～たまらねえぜ。

しばらくやりまくってから又浣腸をしあうともう気が狂う程気持ちええんじゃ。

浮浪者のおっさんのけつの穴にわしのちんぽを突うずるっ込んでやると

けつの穴が糞と小便でずるずるして気持ちが良い。

にいちゃんもおっさんの口にちんぽ突っ込んで腰をつかって居る。

糞まみれのおっさんのちんぽを掻きながら、思い切り射精したんや。

それからは、もうめちゃくちゃにおっさんと兄ちゃんの糞ちんぽを舐めあい、

糞を塗りあい、二回も男汁を出した。もう一度やりたいぜ。

やはり大勢で糞まみれになると最高やで。こんな、変態親父と糞あそびしないか。

ああ～～早く糞まみれになろうぜ。

岡山の県北であえる奴なら最高や。わしは163*90*53,おっさんは165*75*60、や

糞まみれでやりたいやつ、至急、メールくれや。

土方姿のまま浣腸して、糞だらけでやろうや。*/
#include "bits/stdc++.h"
#include <numeric>
#define rep(i,n) for(int i = 0; i < n; i++)
typedef long long ll;
typedef unsigned long long ull;
using namespace std;
#define llMAX numeric_limits<long long>::max()
#define intMAX numeric_limits<int>::max()
#define llMIN numeric_limits<long long>::min()
#define intMIN numeric_limits<int>::min()
#define d_5 100000
#define d9_7 1000000007
#define vll vector<vector<long long>>
#define vl vector<long long>
#define vi vector<int>
#define vii vector<vector<int>>
#define pb push_back
#define pf push_front
#define ld long double

 gcd(ll a,ll b){//最大公約数
  if(a<b){
    swap(a,b);
  }
  if (a%b==0){
		return(b);
    }
	else{
		return(gcd(b,a%b));
    }
}
ll lcm(ll a, ll b)
{
  ll numgcd=gcd(a, b);
  ll num1=a/numgcd;
  ll num2=b/numgcd;
    return (num1*num2*numgcd);
}
int main(void){
  ll n,m;
  cin>>n>>m;
  vl a(n);
  rep(i,n){
    cin>>a[i];
    a[i]/=2;
  }
  ll nowlcm=1;
  rep(i,n){
    ll pre=nowlcm;
    nowlcm=lcm(a[i],nowlcm);
    if(nowlcm>m){
      cout<<0<<endl;
      return 0;
    }
  }
  ll num1=(m/nowlcm)/2;
  if((m/nowlcm)%2==1)num1++;
  cout<<num1<<endl;
  //cout<<ans<<endl;
  return 0;
}


Compiler output:
a.cc:68:2: error: ISO C++ forbids declaration of 'gcd' with no type [-fpermissive]
   68 |  gcd(ll a,ll b){//最大公約数
      |  ^~~
Language: C++

#include<bits/stdc++.h>
#define INF 1e9
#define llINF 1e18
#define MOD 1000000007
#define pb push_back
#define mp make_pair 
#define F first
#define S second
#define ll long long
#define ull unsigned long long
#define vi vector<ll>
#define vvi vector<vi>
#define BITLE(n) (1LL<<((ll)n))
#define BITCNT(n) (__builtin_popcountll(n))
#define SUBS(s,f,t) ((s).substr((f)-1,(t)-(f)+1))
#define ALL(a) (a).begin(),(a).end()
using namespace std;
ll gcd(ll a,ll b){
  ll r=a%b;
  while(r>0){
    a=b;b=r;r=a%b;
  }
  return b;
}
ll lcm(ll a,ll b){
  return a/gcd(a,b)*b;
}
int main(){
  cin.tie(0);
  ios::sync_with_stdio(false);
  ll n,m;cin>>n>>m;
  ll now;
  cin>>now;
  bool fl=false,fl2=false;
  if(a%4==0)fl2=true;
  else fl=true;
  for(int i=1;i<n;i++){
    ll a;cin>>a;
    if(a%4==0)fl2=true;
    else fl=true;
    now=lcm(now,a);
  }
  if(fl&&fl2){
    cout<<0<<endl;return 0;
  }
  ll hoge=now/2;
  if(hoge>m)cout<<0<<endl;
  else{
    cout<<1+(m-hoge)/now<<endl;
  }
  return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:35:6: error: 'a' was not declared in this scope
   35 |   if(a%4==0)fl2=true;
      |      ^
Language: C++

#include <bits/stdc++.h>
#include <unistd.h>
 
using namespace std;
 
typedef long long ll;
typedef pair<ll,ll> P;
 
long long int INF = 3e18;
const ll fact_table = 800008;
double Pi = 3.1415926535897932384626;
 
//vector<ll> G[550010];
vector<P> tree[500010];
priority_queue <ll> pql;
priority_queue <P> pqp;
//big priority queue
priority_queue <ll,vector<ll>,greater<ll> > pqls;
priority_queue <P,vector<P>,greater<P> > pqps;
//small priority queue
//top pop
 
ll dx[8]={1,0,-1,0,1,1,-1,-1};
ll dy[8]={0,1,0,-1,1,-1,-1,1};
char dir[] = "DRUL";
//ll bit[500005];
//↓,→,↑,←
 
 
#define p(x) cout<<x<<"\n";
#define el cout<<endl;
#define pe(x) cout<<(x)<<" ";
#define ps(x) cout<<fixed<<setprecision(25)<<x<<endl;
#define pu(x) cout<<(x);
#define pb push_back
#define lb lower_bound
#define ub upper_bound
#define CLEAR(a) a = decltype(a)(); 
 
 
//ll mod = 998244353;
ll mod = 1000000007;
 
ll rui(ll number1,ll number2){
 
    if(number2 == 0){
        return 1;
    }else{
        ll number3 = rui(number1,number2 / 2);
        number3 *= number3;
        number3 %= mod;
        if(number2%2==1){
            number3 *= number1;
            number3 %= mod;
        }
        return number3;
    }
}
ll gcd(ll number1,ll number2){
 
    if(number1 > number2){
        swap(number1,number2);
    }
    if(number1 == 0 || number1 == number2){
        return number2;
    }else{
        return gcd(number2 % number1,number1);
    }
}
void YES(bool condition){
 
    if(condition){
        p("YES");
    }else{
        p("NO");
    }
    return;
}
void Yes(bool condition){
 
    if(condition){
        p("Yes");
    }else{
        p("No");
    }
    return;
}
 
/*
ll fact[fact_table + 5],rfact[fact_table + 5];
 
void c3_init(){
    fact[0] = rfact[0] = 1;
    for(ll i=1; i<=fact_table; i++){
        fact[i] = (fact[i-1]*i) % mod;
    }
    rfact[fact_table] = rui(fact[fact_table],mod - 2);
    for(ll i=fact_table; i>=1; i--){
       rfact[i-1] = rfact[i] * i;
       rfact[i-1] %= mod;
    }
    return;}
ll c3(ll n,ll r){
    return (((fact[n] * rfact[r]) % mod ) * rfact[n-r]) % mod;}
*/
 
ll n,m,num,sum,a,b,c,d,e,g,h,w,i,j,q,r,l;
ll k;
ll ans;
ll x[200005], y[500005], z[200005];
bool used[500005];
char s[500005];
ll query;

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

    cin >> n >> m;
    ll num = 1;
    for(ll i=0;i<n;i++){
        cin >> x[i];
        x[i] /= 2;
        num = num * x[i] / gcd(num , x[i])
        if(num > 1000000000){
            p(0);
            return 0;
        }
    }
    p(num);
    ll ans = m / num;
    ans = (ans + 1) / 2;
    p(ans);


    return 0;
}











Compiler output:
a.cc: In function 'int main()':
a.cc:125:43: error: expected ';' before 'if'
  125 |         num = num * x[i] / gcd(num , x[i])
      |                                           ^
      |                                           ;
  126 |         if(num > 1000000000){
      |         ~~
Language: C++

#pragma GCC optimize("Ofast")
#define _USE_MATH_DEFINES
#include "bits/stdc++.h"

using namespace std;

using u8 = uint8_t;
using u16 = uint16_t;
using u32 = uint32_t;
using u64 = uint64_t;
using i8 = int8_t;
using i16 = int16_t;
using i32 = int32_t;
using i64 = int64_t;

constexpr char newl = '\n';
constexpr double eps = 1e-10;

#define FOR(i,a,b) for (int i = (a); i < (b); i++)
#define F0R(i,b) FOR(i,0,b)
#define RFO(i,a,b) for (int i = ((b)-1); i >=(a); i--)
#define RF0(i,b) RFO(i,0,b)
//#define fi first
//#define se second
#define debug(x) cout << #x << ": " << x << '\n';
#define rng(a) a.begin(),a.end()
#define rrng(a) a.rbegin(),a.rend()

template<typename T1, typename T2> inline void chmin(T1& a, T2 b) { if (a > b) a = b; }
template<typename T1, typename T2> inline void chmax(T1& a, T2 b) { if (a < b) a = b; }
template<class T> void Print(vector<T> v) {
  F0R(i, v.size()) {
    cout << v[i] << ' ';
  }
  cout << newl;
}

#if 1

#include "Modint.h"

constexpr int MOD = 1e9 + 7; // 1e9 + 7

// INSERT ABOVE HERE
signed main() {
  cin.tie(0);
  ios_base::sync_with_stdio(false);

  int N;
  cin >> N;

  vector<int> cs(N);
  F0R(i, N) {
    cin >> cs[i];
  }
  sort(rng(cs));

  mint<MOD> result = 0;

  // 数列の違う部分を変更する際、コストが少ない部分から順に変更していくことで、
  // 和が最小になる。

  // それぞれのCiにつき、払われるコストを全てのパターンで計算していけばいい

  // とある Ci が違う数列の組は 2 * 2 ^ (N-1) * 2 ^ (N-1) = 2 ^ (1 + N*2 - 2) 通り
  // 数列をソートし、降順にC1, C2 ... CN とする

  // すると C1 は明らかに最後の順番で使われるので、この部分のコストは C1 * 1 * 2^1 * 2 ^ (N-1) * 2 ^ (N-1)
  // C1 * A1 とする

  // C2 は、C1が違うときのみ最後から2番目(D=2), それ以外のとき最後(D=1)に使われる
  // D=2 のときは 2^2 * 2 ^ (N-2) * 2 ^ (N-2) 通り
  // A1 にその数を足せば A2 が得られるので　C2 * A2

  // D=a のときは 2^a * 2 ^ (N-a) * 2 ^ (N-a) = 2 ^ (N * 2 - a)

  // 解けないので解説を読む
  // pdfでも分からないので配信を見る

  // S xor T = X とすると、XとTがあればSは一意に定まる
  // 違いだけ考えればいいので、T=0000... に対する答えを出して、それ * 2^N すればいい
  // 言い換えると、全Xに対するコストの総和を取って、それ * 2^N

  // 数列Cは昇順にする
  
  // X = 00 Cost=0
  // X = 01 Cost=C2
  // X = 10 Cost=C1
  // X = 11 Cost = C1 * 2 + C2

  // X = ?????
  //       Ci
  //       ??? にある 1の数を全て足したのが、Ciの係数
  //     ?? の部分の1の数は関係ない

  // i の部分の1の合計: 2 ^ (N-i)
  // i より右の1の合計: 2 ^ (N-i-1) * (N-i)

  // 左の部分: 2^(i-1) 通り

  vector<mint<MOD>> two(N + 1);
  two[0] = 1;
  F0R(i, N) {
    two[i + 1] = two[i] * 2;
  }

  F0R(i, N) {
    mint<MOD> a = i < N - 1 ? two[N-i-2] : 0;
    result += two[i] * (two[N-i-1] + (a * (N-i-1))) * cs[i];
  }
  result *= two[N];

  cout << result.val;
}
#endif


Compiler output:
a.cc:40:10: fatal error: Modint.h: No such file or directory
   40 | #include "Modint.h"
      |          ^~~~~~~~~~
compilation terminated.
Language: C

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

const int mod = 1000000007;

int main() {
    int n;
    cin >> n;
    vector<int> C(n);
    rep(i, n) cin >> C[i];
    sort(C.begin(), C.end(), greater<int>());
    vector<ll> twoexp(n);
    twoexp[0] = 1;
    rep(i, n-1) twoexp[i+1] = (twoexp[i]*2)%mod;
    ll ans = 0;
    rep(i, n) {
      ll tmp = twoexp[i];
      if (i > 0) tmp += twoexp[i-1] * i;
      tmp %= mod;
      tmp *= C[i];
      tmp %= mod;
      tmp *= twoexp[n-i-1];
      tmp %= mod;
      ans += tmp;
      ans %= mod;
    }
    ans *= twoexp[n-1] * 2;
    ans %= mod;
    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;

#define int long long
const int MOD=1e9+7;
int pw(int n,int k){
  assert(k>=0);
  int res=1;
  while(k){
    if(k&1)(res*=n)%=MOD;
    (n*=n)%=MOD;
    k>>=1;
  }
  return res;
}
std::vector<int> Factorial(5e6),Finverse(5e6);
inline void Cinit(){// limit is 5e6 /// write pw /// this takes 792ms at AtCoder
  Factorial[0]=1;
  for(int i=1;i<5e6;i++)Factorial[i]=(Factorial[i-1]*i)%MOD;
  for(int i=0;i<5e6;i++)Finverse[i]=pw(Factorial[i],MOD-2);
}
int nCk(int n,int k){
  if(n<k)return 0;if(k<0)return 0;
  if(!Factorial[0])Cinit();
  int res=Factorial[n];
  (res*=Finverse[k])%=MOD;
  (res*=Finverse[n-k])%=MOD;
  return res;
}
/*
大きい方から見てi番目(1-indexed)のやつがDとして加算されるのは
nCk(i-1,D-1)*pw(N-i)通り
つまり
REP(i,1~N){
  REP(D,1~i){
    ans+=D*nCk(i-1,D-1)*pw(2,N-i)*v[i];
  }
}

REP(D,1~i)D*nCk(i-1,D-1)=REP (D-1)*nCk(i-1,D-1) + nCk(i-1,D-1)

REP (D-1)*nCk(i-1,D-1)=(i-1)*1/2*pw(2,i-1)
REP nCk(i-1,D-1)=pw(2,i-1)
*/
void X(int a,int b){
  return a*b%MOD;
}
int X(int a,int b,int c){
  return X(X(a,b),c);
}


signed main(){
  int n;cin>>n;
  vector<int>v(n);
  for(int i=0;i<n;i++)cin>>v[i];
  sort(v.rbegin(),v.rend());
  int ans=0;
  for(int i=1;i<=n;i++)
    (ans+=(X(i-1,pw(2,MOD-2),pw(2,i-1))+X(pw(2,i-1),pw(2,n-i),v[i-1]))%=MOD;
  cout<<X(ans*pw(2,n))<<endl;
}


Compiler output:
a.cc: In function 'void X(long long int, long long int)':
a.cc:46:13: error: return-statement with a value, in function returning 'void' [-fpermissive]
   46 |   return a*b%MOD;
      |          ~~~^~~~
a.cc: In function 'long long int X(long long int, long long int, long long int)':
a.cc:49:13: error: invalid use of void expression
   49 |   return X(X(a,b),c);
      |            ~^~~~~
a.cc: In function 'int main()':
a.cc:60:40: error: lvalue required as left operand of assignment
   60 |     (ans+=(X(i-1,pw(2,MOD-2),pw(2,i-1))+X(pw(2,i-1),pw(2,n-i),v[i-1]))%=MOD;
      |           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
a.cc:60:76: error: expected ')' before ';' token
   60 |     (ans+=(X(i-1,pw(2,MOD-2),pw(2,i-1))+X(pw(2,i-1),pw(2,n-i),v[i-1]))%=MOD;
      |     ~                                                                      ^
      |                                                                            )
a.cc:61:10: error: no matching function for call to 'X(long long int)'
   61 |   cout<<X(ans*pw(2,n))<<endl;
      |         ~^~~~~~~~~~~~~
a.cc:45:6: note: candidate: 'void X(long long int, long long int)'
   45 | void X(int a,int b){
      |      ^
a.cc:45:6: note:   candidate expects 2 arguments, 1 provided
a.cc:48:5: note: candidate: 'long long int X(long long int, long long int, long long int)'
   48 | int X(int a,int b,int c){
      |     ^
a.cc:48:5: note:   candidate expects 3 arguments, 1 provided
Language: C++

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

#define int long long
const int MOD=1e9+7;
int pw(int n,int k){
  assert(k>=0);
  int res=1;
  while(k){
    if(k&1)(res*=n)%=MOD;
    (n*=n)%=MOD;
    k>>=1;
  }
  return res;
}
std::vector<int> Factorial(5e6),Finverse(5e6);
inline void Cinit(){// limit is 5e6 /// write pw /// this takes 792ms at AtCoder
  Factorial[0]=1;
  for(int i=1;i<5e6;i++)Factorial[i]=(Factorial[i-1]*i)%MOD;
  for(int i=0;i<5e6;i++)Finverse[i]=pw(Factorial[i],MOD-2);
}
int nCk(int n,int k){
  if(n<k)return 0;if(k<0)return 0;
  if(!Factorial[0])Cinit();
  int res=Factorial[n];
  (res*=Finverse[k])%=MOD;
  (res*=Finverse[n-k])%=MOD;
  return res;
}
/*
大きい方から見てi番目(1-indexed)のやつがDとして加算されるのは
nCk(i-1,D-1)*pw(N-i)通り
つまり
REP(i,1~N){
  REP(D,1~i){
    ans+=D*nCk(i-1,D-1)*pw(2,N-i)*v[i];
  }
}

REP(D,1~i)D*nCk(i-1,D-1)=REP (D-1)*nCk(i-1,D-1) + nCk(i-1,D-1)

REP (D-1)*nCk(i-1,D-1)=(i-1)*1/2*pw(2,i-1)
REP nCk(i-1,D-1)=pw(2,i-1)
*/
void X(int a,int b){
  return a*b%MOD;
}
void X(int a,int b,int c){
  return X(X(a,b),c);
}


signed main(){
  int n;cin>>n;
  vector<int>v(n);
  for(int i=0;i<n;i++)cin>>v[i];
  sort(v.rbegin(),v.rend());
  int ans=0;
  for(int i=1;i<=n;i++)
    (ans+=(X(i-1,pw(2,MOD-2),pw(2,i-1))+X(pw(2,i-1),pw(2,n-i),v[i-1]))%=MOD;
  cout<<X(ans*pw(2,n))<<endl;
}


Compiler output:
a.cc: In function 'void X(long long int, long long int)':
a.cc:46:13: error: return-statement with a value, in function returning 'void' [-fpermissive]
   46 |   return a*b%MOD;
      |          ~~~^~~~
a.cc: In function 'void X(long long int, long long int, long long int)':
a.cc:49:13: error: invalid use of void expression
   49 |   return X(X(a,b),c);
      |            ~^~~~~
a.cc: In function 'int main()':
a.cc:60:40: error: invalid operands of types 'void' and 'void' to binary 'operator+'
   60 |     (ans+=(X(i-1,pw(2,MOD-2),pw(2,i-1))+X(pw(2,i-1),pw(2,n-i),v[i-1]))%=MOD;
      |            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |             |                            |
      |             void                         void
a.cc:60:76: error: expected ')' before ';' token
   60 |     (ans+=(X(i-1,pw(2,MOD-2),pw(2,i-1))+X(pw(2,i-1),pw(2,n-i),v[i-1]))%=MOD;
      |     ~                                                                      ^
      |                                                                            )
a.cc:61:10: error: no matching function for call to 'X(long long int)'
   61 |   cout<<X(ans*pw(2,n))<<endl;
      |         ~^~~~~~~~~~~~~
a.cc:45:6: note: candidate: 'void X(long long int, long long int)'
   45 | void X(int a,int b){
      |      ^
a.cc:45:6: note:   candidate expects 2 arguments, 1 provided
a.cc:48:6: note: candidate: 'void X(long long int, long long int, long long int)'
   48 | void X(int a,int b,int c){
      |      ^
a.cc:48:6: note:   candidate expects 3 arguments, 1 provided
Language: C++

#include <iostream>
#include <vector>
#define rep(i,n) for(int i=0; i<(int)(n); i++)

using namespace std;
typedef long long LL;
const LL mod=1e9+7;

LL modpow(LL x, LL n){
	LL r=1;
	while(n){
		if(n&1) r=r*x%mod;
		x=x*x%mod;
		n>>=1;
	}
	return r;
}

int main(){
  int N;
  cin >> N;
  vector<LL> C(N);
  rep(i,N) cin >> C[i];
  sort(C.begin(),C.end());
  vector<LL> P(N);
  rep(i,N){
    P[i]=modpow(2,2*N-2)*(N+1-i);
    P[i]%=mod;
  }
  LL ans=0;
  rep(i,N){
    ans+=C[i]*P[i];
    ans%=mod;
  }
  cout << ans << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:3: error: 'sort' was not declared in this scope; did you mean 'short'?
   24 |   sort(C.begin(),C.end());
      |   ^~~~
      |   short
Language: C++

#include "bits/stdc++.h"
using namespace std;
#define ll long long int
#define rep(i,n) for( int i = 0; i < n; i++ )
#define rrep(i,n) for( int i = n; i >= 0; i-- )
#define REP(i,s,t) for( int i = s; i <= t; i++ )
#define RREP(i,s,t) for( int i = s; i >= t; i-- )
#define dump(x)  cerr << #x << " = " << (x) << endl;
#define INF 2000000000
#define mod 1000000007
#define INF2 1000000000000000000
#define int long long 
int F[2100010];

int Mul(int a, int b) {
	return ((a % mod) * (b % mod)) % mod;
}

void fact(void) {
	F[0] = 1;
	F[1] = 1;
	for (int i = 2; i <= 2100000; i++) {
		F[i] = Mul(i, F[i - 1]);
	}
}
int square(int x) {
	return (x * x) % mod;
}

int power(int x, int y) {
	if (y == 0) return 1;
	else if (y == 1) return x % mod;
	else if (y % 2 == 0) return square(power(x, y / 2)) % mod;
	else return square(power(x, y / 2)) * x % mod;
}

int Div(int a, int b) {
	return Mul(a, power(b, mod - 2));
}
int P(int n, int r) {
	if (n < r || n < 0 || r < 0) return 0;
	return Div(F[n], F[n - r]);
}

int C(int n, int r) {
	if (n < r || n < 0 || r < 0) return 0;
	int ret;
	ret = Div(F[n], Mul(F[n - r], F[r]));
	return ret;
}
int H(int n, int r) {
	if (n == 0 && r == 0) return 1;
	return C(n + r - 1, r);
}

signed main(void)
{
    cin.tie(0);
    ios::sync_with_stdio(false);
    int N; cin >> N;
    int C[200010];
    rep(i, N) cin >> C[i];
    sort(C, C + N, greater<int>());
    int ans = 0;
    int k = pow(2, N - 1);
    rep(i, N) {
        ans = (ans + Mul(C[i], k)) % mod;
        //cout << ans << " " << k << endl;
        k = (k + pow(2, N - 2)) % mod;
    }   
    cout << Mul(ans, pow(2, N)) << endl;


    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:69:33: error: invalid operands of types '__gnu_cxx::__promote<double>::__type' {aka 'double'} and 'int' to binary 'operator%'
   69 |         k = (k + pow(2, N - 2)) % mod;
      |             ~~~~~~~~~~~~~~~~~~~ ^
      |                |
      |                __gnu_cxx::__promote<double>::__type {aka double}
Language: C++

N = int(input())
C = list(map(int, input().split()))

MOD = 10 ** 9 + 7
C.sort()
ans = 0
for i in range(N):
    l = i
    r = N - i - 1
    now = pow(2, r, MOD)
    if r > 0:
        now += pow(2, r - 1, MOD) * r
    now *= pow(2, l, MOD)
    now *= C[i]
    ans += now
print(ans * pow(2, N, MOD) % MOD)


Compiler output:
a.cc:1:1: error: 'N' does not name a type
    1 | N = int(input())
      | ^
Language: C++

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

ll RepeatSquare(ll x,ll n,ll mod){
    if(n==0) return 1;
    if(n==1) return x%mod;
    if(n%2==0){
        ll half=RepeatSquare(x,n/2,mod);
        return (half*half)%mod;
    }
    if(n%2==1){
        return x*RepeatSquare(x,n-1,mod)%mod;
    }
}

int main(){
    ll n;
    cin >> n;
    vector<ll> c(n);
    rp(i,n) cin >> c.at(i);
    sort(c.begin(),c.end());
    reverse(c.begin(),c.end());
    ll ans=0;
    ll x=RepeatSquare(4,n-1,1000000007);
    rp(i,n){
        ans += c.at(i)*(i+2);
        ans %=1000000007
    }
    ans *= x;
     ans %= 1000000007;
     cout << ans << endl;
     return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:29:25: error: expected ';' before '}' token
   29 |         ans %=1000000007
      |                         ^
      |                         ;
   30 |     }
      |     ~                    
a.cc: In function 'll RepeatSquare(ll, ll, ll)':
a.cc:16:1: warning: control reaches end of non-void function [-Wreturn-type]
   16 | }
      | ^
Language: C++

MOD = 1000000007
n = gets.chomp.to_i
costs = gets.chomp.split.map(&:to_i)
costs.sort!.reverse!
coef = []

#コストにかかる係数
step = 2 ** (n - 2)
base = step * 2
 
coef[0] = base
if n == 1
  coef = [1]
else
  (n-1).times {|i|
    coef[i+1] = coef[i] + step
  }
end
 
 
ans = 0
n.times do |i|
  ans += costs[i] * coef[i] % MOD
end
 
ans = ans << n
puts ans % MOD

Compiler output:
a.cc:7:2: error: invalid preprocessing directive #\U000030b3\U000030b9\U000030c8\U0000306b\U0000304b\U0000304b\U0000308b\U00004fc2\U00006570
    7 | #コストにかかる係数
      |  ^~~~~~~~~~~~~~~~~~
a.cc:1:1: error: 'MOD' does not name a type
    1 | MOD = 1000000007
      | ^~~
a.cc:18:1: error: 'end' does not name a type
   18 | end
      | ^~~
Language: C++

MOD = 1000000007
n = gets.chomp.to_i
costs = gets.chomp.split.map(&:to_i)
costs.sort!.reverse!
coef = []

#コストにかかる係数
step = 2 ** (n - 2)
base = step * 2
 
coef[0] = base
if n == 1
  coef = [1]
else
  (1..n).to_a.map {|v|
    coef[v] = coef[v-1] + step
  }
end
 
 
ans = 0
n.times do |i|
  ans += costs[i] * coef[i] % MOD
end
 
ans = ans << n
puts ans % MOD

Compiler output:
a.cc:7:2: error: invalid preprocessing directive #\U000030b3\U000030b9\U000030c8\U0000306b\U0000304b\U0000304b\U0000308b\U00004fc2\U00006570
    7 | #コストにかかる係数
      |  ^~~~~~~~~~~~~~~~~~
a.cc:15:4: error: too many decimal points in number
   15 |   (1..n).to_a.map {|v|
      |    ^~~~
a.cc:1:1: error: 'MOD' does not name a type
    1 | MOD = 1000000007
      | ^~~
a.cc:18:1: error: 'end' does not name a type
   18 | end
      | ^~~
Language: C++

MOD = 1000000007
n = gets.chomp.to_i
costs = gets.chomp.split.map(&:to_i)
costs.sort!.reverse!
 
#コストにかかる係数
step = 2 ** (n - 2)
base = step * 2
 
coef = [base]
if n == 1
  coef = [1]
else
  (1..n).map {|v|
    coef[v] = coef[v-1] + step
  }
end
 
 
ans = 0
n.times do |i|
  ans += costs[i] * coef[i] % MOD
end
 
ans = ans << n
puts ans % MOD

Compiler output:
a.cc:6:2: error: invalid preprocessing directive #\U000030b3\U000030b9\U000030c8\U0000306b\U0000304b\U0000304b\U0000308b\U00004fc2\U00006570
    6 | #コストにかかる係数
      |  ^~~~~~~~~~~~~~~~~~
a.cc:14:4: error: too many decimal points in number
   14 |   (1..n).map {|v|
      |    ^~~~
a.cc:1:1: error: 'MOD' does not name a type
    1 | MOD = 1000000007
      | ^~~
a.cc:17:1: error: 'end' does not name a type
   17 | end
      | ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<n;++i)
#define rep1(i,n) for(int i=1;i<=n;++i)
#define eachdo(e,array) for(const auto& e : array)
#define upper_index(v,a) (int)distance(v.begin(), upper_bound((v).begin(),(v).end(),a))
template<class T> bool chmin(T &a, T b){if(a>b){a=b;return true;}return false;}
typedef long long ll;
const ll INF = 1e18;
const ll MOD = 1e9+7;
const ll MAX = 400005;
long long fac[MAX], finv[MAX], inv[MAX];


ll modpow(ll a, ll n, ll mod=MOD) {
    ll res = 1;
    while (n > 0) {
        if (n & 1) res = res * a % mod;
        a = a * a % mod;
        n >>= 1;
    }
    return res;
}
ll modinv(ll a,ll m=MOD) {
    ll b=m,u=1,v=0;
    while(b){
        ll t=a/b;
        a-=t*b;
        swap(a,b);
        u-=t*v;
        swap(u,v);
    }
    u%=m;
    if(u<0) u+=m;
    return u;
}

void COMinit(){
    fac[0]=fac[1]=1;
    finv[0]=finv[1]=1;
    inv[1]=1;
    for (ll 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;
    }
}

ll COM(ll n, ll 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(){ 
    COMinit();
    ll N;cin >> N;
    vector<ll> c(N); rep(i,N) cin >> c[i];
    sort(c.begin(),c.end());
    ll ans = 0;
    rep(i,N){
        ans += ((modpow(2,i)*c[i]) % MOD)*((modpow(2,N-1-i)+(N-1-i)*modpow(2,N-2-i) % MOD);
        ans %= MOD;
    }
    ans = ans * modpow(2,N);
    ans %= MOD;
    cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:63:91: error: expected ')' before ';' token
   63 |         ans += ((modpow(2,i)*c[i]) % MOD)*((modpow(2,N-1-i)+(N-1-i)*modpow(2,N-2-i) % MOD);
      |                                           ~                                               ^
      |                                                                                           )
Language: C++

MOD  = 1000_000_007i64
POW2 = Array.new(200001, 1i64)
(POW2.size - 1).times do |i|
  POW2[i + 1] = POW2[i] * 2 % MOD
end
n = read_line.to_i
c = read_line.split.map(&.to_i64).sort.reverse
ans = POW2[n - 1] * c[0] % MOD
1.upto(n - 1) do |i|
  ans += POW2[n - 2] * (2 + i) % MOD * c[i]
  ans %= MOD
end
puts ans * POW2[n] % MOD

# 小さい方からk+1番目の数によるコスト sum_{i = 0 -> k} (i + 1) * C(k, i) を求めたい
# (1 + x) ^ k = 1 + C(k, 1)x + C(k, 2)x^2 + ... + C(k, k-1)x^(k-1) + C(k, k)x^k
# x(1 + x) ^ k = C(k, 0)x + C(k, 1)x^2 + C(k, 2)x^3 + ... + C(k, k-1)x^k + C(k, k)x^(k+1)
# d/dx x(1 + x) ^ k = C(k, 0) + 2 C(k, 1)x + 3 C(k, 2)x^2 + ... + k C(k, k-1)x^(k-1) + (k+1) C(k, k)x^k
# 右辺が求めたいものになった。
# 左辺を計算すると (1+x)^k + kx(1+x)^(k-1)
# x -> 1 とすると
# 2^k + k2^(k-1) = (2+k)2^(k-1)


Compiler output:
a.cc:15:3: error: invalid preprocessing directive #\U00005c0f\U00003055\U00003044\U000065b9\U0000304b\U00003089k
   15 | # 小さい方からk+1番目の数によるコスト sum_{i = 0 -> k} (i + 1) * C(k, i) を求めたい
      |   ^~~~~~~~~~~~~
a.cc:16:3: error: invalid preprocessing directive #(
   16 | # (1 + x) ^ k = 1 + C(k, 1)x + C(k, 2)x^2 + ... + C(k, k-1)x^(k-1) + C(k, k)x^k
      |   ^
a.cc:17:3: error: invalid preprocessing directive #x
   17 | # x(1 + x) ^ k = C(k, 0)x + C(k, 1)x^2 + C(k, 2)x^3 + ... + C(k, k-1)x^k + C(k, k)x^(k+1)
      |   ^
a.cc:18:3: error: invalid preprocessing directive #d
   18 | # d/dx x(1 + x) ^ k = C(k, 0) + 2 C(k, 1)x + 3 C(k, 2)x^2 + ... + k C(k, k-1)x^(k-1) + (k+1) C(k, k)x^k
      |   ^
a.cc:19:3: error: extended character 。 is not valid in an identifier
   19 | # 右辺が求めたいものになった。
      |   ^
a.cc:19:3: error: invalid preprocessing directive #\U000053f3\U00008fba\U0000304c\U00006c42\U00003081\U0000305f\U00003044\U00003082\U0000306e\U0000306b\U0000306a\U00003063\U0000305f\U00003002
   19 | # 右辺が求めたいものになった。
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
a.cc:20:3: error: invalid preprocessing directive #\U00005de6\U00008fba\U00003092\U00008a08\U00007b97\U00003059\U0000308b\U00003068
   20 | # 左辺を計算すると (1+x)^k + kx(1+x)^(k-1)
      |   ^~~~~~~~~~~~~~~~
a.cc:21:3: error: invalid preprocessing directive #x
   21 | # x -> 1 とすると
      |   ^
a.cc:22:4: error: "^" is not a valid filename
   22 | # 2^k + k2^(k-1) = (2+k)2^(k-1)
      |    ^
a.cc:1:1: error: 'MOD' does not name a type
    1 | MOD  = 1000_000_007i64
      | ^~~
Language: Java

import java.io.*;
import java.util.*;

public class  gym{
	static long mod=(long)1e9+7;
	public static void main(String[] args) throws Exception{
		MScanner sc=new MScanner(System.in);
		PrintWriter pw=new PrintWriter(System.out);
		int n=sc.nextInt();
		long[]power2=new long[n+1];
		power2[0]=1;
		for(int i=1;i<=n;i++)power2[i]=(power2[i-1]*2)%mod;
		Long[]in=sc.takearrlobj(n);
		Arrays.sort(in);
		long ans=0;
		for(int i=0;i<n;i++) {
			int after=n-i-1,before=i;;
			long inc=(power2[before]*power2[before])%mod;
			inc=(inc*power2[after+1])%mod;
			long inc2=power2[after];
			long inc3=after-1<0?0:(after*power2[after-1])%mod;
			long mul=(inc2+inc3)%mod;
			inc=(inc*mul)%mod;
			inc=(inc*in[i])%mod;
			ans=(ans+inc)%mod;
		}
		pw.println(ans);
		pw.flush();
	}
	static class MScanner {
		StringTokenizer st;
		BufferedReader br;
		public MScanner(InputStream system) {
			br = new BufferedReader(new InputStreamReader(system));
		}
 
		public MScanner(String file) throws Exception {
			br = new BufferedReader(new FileReader(file));
		}
 
		public String next() throws IOException {
			while (st == null || !st.hasMoreTokens())
				st = new StringTokenizer(br.readLine());
			return st.nextToken();
		}
		public int[] takearr(int n) throws IOException {
	        int[]in=new int[n];for(int i=0;i<n;i++)in[i]=nextInt();
	        return in;
		}
		public long[] takearrl(int n) throws IOException {
	        long[]in=new long[n];for(int i=0;i<n;i++)in[i]=nextLong();
	        return in;
		}
		public Integer[] takearrobj(int n) throws IOException {
	        Integer[]in=new Integer[n];for(int i=0;i<n;i++)in[i]=nextInt();
	        return in;
		}
		public Long[] takearrlobj(int n) throws IOException {
	        Long[]in=new Long[n];for(int i=0;i<n;i++)in[i]=nextLong();
	        return in;
		}
		public String nextLine() throws IOException {
			return br.readLine();
		}
 
		public int nextInt() throws IOException {
			return Integer.parseInt(next());
		}
 
		public double nextDouble() throws IOException {
			return Double.parseDouble(next());
		}
 
		public char nextChar() throws IOException {
			return next().charAt(0);
		}
 
		public Long nextLong() throws IOException {
			return Long.parseLong(next());
		}
 
		public boolean ready() throws IOException {
			return br.ready();
		}
 
		public void waitForInput() throws InterruptedException {
			Thread.sleep(3000);
		}
	}
}

Compiler output:
Main.java:4: error: class gym is public, should be declared in a file named gym.java
public class  gym{
       ^
1 error
Language: C++

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

const ll MOD = 1e9+7;

ll p2(ll r){ // 2のr乗%MODを求める
  if( r == 0 ){ return 1LL;}
  else if( r == 1){ return 2LL;}
  else{
    
    if( r % 2 == 0 ){ 
      return (p2(r/2)*p2(r/2)) %MOD;
    }
    else{
      return ( ((p2((r-1)/2)*p2((r-1)/2)) %MOD )*2)%MOD;
    }
    
  }
}
    
    
                  

int main(){ 
  
  ll N; cin >> N;
  
  if( N == 1){ cout << (2*C[i])%MOD << endl; return 0;} 
  
  vector<ll> C(N);
  
  for(ll i = 0; i < N; i++){ cin >> C[i];}
  
  sort(C.begin(),C.end());
  
  vector<ll> B(N);
  
  B[0] = (N-1)*p2(N-2)+p2(N-1);
  

  
  for(ll i = 1; i < N; i++){
    B[i] = B[i-1]-p2(N-2);
  
    B[i] = (B[i]+MOD)%MOD;
  }
  
  
  
  ll ans = 0;
  
  for(ll i = 0; i < N; i++){
    
    ll res = B[i]*C[i];
    res %= MOD;
    
    ans += res;
    ans %= MOD;
  }
  
  ans *= p2(N);
  
  ans %= MOD;
  
  cout << ans << endl;
  
  return 0;
} 

Compiler output:
a.cc: In function 'int main()':
a.cc:29:27: error: 'C' was not declared in this scope
   29 |   if( N == 1){ cout << (2*C[i])%MOD << endl; return 0;}
      |                           ^
a.cc:29:29: error: 'i' was not declared in this scope
   29 |   if( N == 1){ cout << (2*C[i])%MOD << endl; return 0;}
      |                             ^
Language: C++

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

#define mod 1000000007

long long int combination(long long int n,long long int r)
{
    if (r == 0 || r == n)
        return (1);
    else if (r == 1)
        return (n);
    return ((combination(n - 1, r - 1) + combination(n - 1, r))%mod);
}

long long int dob(long long int n){
    if(n==0)return (1);
    else{return (2*dob(n-1)%mod)}
}

int main(){
 long long int N;
 cin >> N;
 int c[N];
 int i;
 for(i=0;i<N;++i){
   cin >> c[i];}
long long int count = 0;
 for(i=0;i<N;++i){
  count += ((c[i]*(N-i)*dob(n-i-1))%mod);
  count %= mod;
  }
 cout << ((count*dob(N))%mod) << endl;
return 0;
}

Compiler output:
a.cc: In function 'long long int dob(long long int)':
a.cc:17:33: error: expected ';' before '}' token
   17 |     else{return (2*dob(n-1)%mod)}
      |                                 ^
      |                                 ;
a.cc: In function 'int main()':
a.cc:29:29: error: 'n' was not declared in this scope
   29 |   count += ((c[i]*(N-i)*dob(n-i-1))%mod);
      |                             ^
Language: C++

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

#define mod 1000000007;

long long int combination(long long int n,long long int r)
{
    if (r == 0 || r == n)
        return (1);
    else if (r == 1)
        return (n);
    return ((combination(n - 1, r - 1) + combination(n - 1, r))%mod);
}

long long int dob(long long int n){
    if(n==0)return (1);
    else{return (2*dob(n-1)%mod)}
}

int main(){
 long long int N;
 cin >> N;
 int c[N];
 int i;
 for(i=0;i<N;++i){
   cin >> c[i];}
long long int count = 0;
 for(i=0;i<N;++i){
  count += ((c[i]*(N-i)*dob(n-i-1))%mod);
  count %= mod;
  }
 cout << ((count*dob(N))%mod) << endl;
return 0;
}

Compiler output:
a.cc: In function 'long long int combination(long long int, long long int)':
a.cc:4:23: error: expected ')' before ';' token
    4 | #define mod 1000000007;
      |                       ^
a.cc:12:65: note: in expansion of macro 'mod'
   12 |     return ((combination(n - 1, r - 1) + combination(n - 1, r))%mod);
      |                                                                 ^~~
a.cc:12:12: note: to match this '('
   12 |     return ((combination(n - 1, r - 1) + combination(n - 1, r))%mod);
      |            ^
a.cc:12:68: error: expected primary-expression before ')' token
   12 |     return ((combination(n - 1, r - 1) + combination(n - 1, r))%mod);
      |                                                                    ^
a.cc: In function 'long long int dob(long long int)':
a.cc:4:23: error: expected ')' before ';' token
    4 | #define mod 1000000007;
      |                       ^
a.cc:17:29: note: in expansion of macro 'mod'
   17 |     else{return (2*dob(n-1)%mod)}
      |                             ^~~
a.cc:17:17: note: to match this '('
   17 |     else{return (2*dob(n-1)%mod)}
      |                 ^
a.cc:17:32: error: expected primary-expression before ')' token
   17 |     else{return (2*dob(n-1)%mod)}
      |                                ^
a.cc: In function 'int main()':
a.cc:29:29: error: 'n' was not declared in this scope
   29 |   count += ((c[i]*(N-i)*dob(n-i-1))%mod);
      |                             ^
a.cc:4:23: error: expected ')' before ';' token
    4 | #define mod 1000000007;
      |                       ^
a.cc:29:37: note: in expansion of macro 'mod'
   29 |   count += ((c[i]*(N-i)*dob(n-i-1))%mod);
      |                                     ^~~
a.cc:29:12: note: to match this '('
   29 |   count += ((c[i]*(N-i)*dob(n-i-1))%mod);
      |            ^
a.cc:29:40: error: expected primary-expression before ')' token
   29 |   count += ((c[i]*(N-i)*dob(n-i-1))%mod);
      |                                        ^
a.cc:4:23: error: expected ')' before ';' token
    4 | #define mod 1000000007;
      |                       ^
a.cc:32:26: note: in expansion of macro 'mod'
   32 |  cout << ((count*dob(N))%mod) << endl;
      |                          ^~~
a.cc:32:10: note: to match this '('
   32 |  cout << ((count*dob(N))%mod) << endl;
      |          ^
a.cc:32:29: error: expected primary-expression before ')' token
   32 |  cout << ((count*dob(N))%mod) << endl;
      |                             ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
const long M=1000000007;
//#define M 1000000007
long pow(long x,long p){
  if(p==0)return 1;
  if(p%2)return x*pow(x,p-1)%M;
  else {long a=pow(x,p/2);return a*2%M;}
}
int main(){
  long N;cin>>N;
  vector<long>C(N);for(int i=0;i<N;i++)cin>>C[i];
  sort(C.begin(),C.end(),greater<long>());
  long ans=0;
  for(int k=0;k<N;k++){
    ans=(ans+C[k]*((N==1?0:pow(2,2*N-2)*k)+pow(2,2*N-1)))%M;
  }
  cout<<ans%M;
  assert(ans<0);
}



Compiler output:
a.cc: In function 'int main()':
a.cc:16:58: error: invalid operands of types '__gnu_cxx::__promote<double>::__type' {aka 'double'} and 'const long int' to binary 'operator%'
   16 |     ans=(ans+C[k]*((N==1?0:pow(2,2*N-2)*k)+pow(2,2*N-1)))%M;
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~
      |             |                                             |
      |             |                                             const long int
      |             __gnu_cxx::__promote<double>::__type {aka double}