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

#include <bits/stdc++.h>
using namespace std;
using ll=long long;
typedef pair<int,int>P;
 
int main() {
     ll x;
	ll ans = 1;
	cin >> x;
  ll count=0;

  for(ll n=1;n<=x;n++){
	vector<ll> x(n + 1);
	ll num = n; // 素因数分解する変数num 

	for (ll i = 2; i <= n; i++) {
		while (num%i == 0) { // 素数で割り切れなくなるまで割っていく
			x.at(i)++;　//割った個数を配列に足す
			num /= i;
		}
	}

	for (ll i = 2; i <= n; i++)
	{	
		ans *= x.at(i) + 1;　//それぞれを+1して掛けていく
	}
	count+=ans*n;
  }
	cout<<count<<endl;
  
}

Compiler output:
a.cc:18:35: error: extended character 　 is not valid in an identifier
   18 |                         x.at(i)++;　//割った個数を配列に足す
      |                                   ^
a.cc:25:36: error: extended character 　 is not valid in an identifier
   25 |                 ans *= x.at(i) + 1;　//それぞれを+1して掛けていく
      |                                    ^
a.cc: In function 'int main()':
a.cc:18:35: error: '\U00003000' was not declared in this scope
   18 |                         x.at(i)++;　//割った個数を配列に足す
      |                                   ^~
a.cc:25:36: error: '\U00003000' was not declared in this scope
   25 |                 ans *= x.at(i) + 1;　//それぞれを+1して掛けていく
      |                                    ^~
Language: C++

#include<bits/stdc++.h>

using namespace std;

int divcount(int x,vector<bool>&hash){
	int total = 1; 
    for (int p = 2; p <= x; p++) { 
        if (hash[p]) { 
  
            // calculate number of divisor 
            // with formula total div =  
            // (p1+1) * (p2+1) *.....* (pn+1) 
            // where n = (a1^p1)*(a2^p2)....  
            // *(an^pn) ai being prime divisor 
            // for n and pi are their respective  
            // power in factorization 
            int count = 0; 
            if (n % p == 0) { 
                while (n % p == 0) { 
                    n = n / p; 
                    count++; 
                } 
                total = total * (count + 1); 
            } 
        } 
    } 
    return total; 
}

int main() 
{ 
	 // sieve method for prime calculation 
	 int n = 1e7+1;
    vector<bool>hash(n+1,true); 
    //memset(hash, true, sizeof(hash)); 
    for (int p = 2; p * p < n; p++) 
        if (hash[p] == true) 
            for (int i = p * 2; i < n; i += p) 
                hash[i] = false; 
  
    // Traversing through all prime numbers 
    
    int t;
    cin>>t;
    ll ans=0;
    rep(i,1,t+1){
    	ans+=i*divcount(i,hash);
    }
    cout<<ans<<endl;
    return 0; 
} 

Compiler output:
a.cc: In function 'int divcount(int, std::vector<bool>&)':
a.cc:18:17: error: 'n' was not declared in this scope
   18 |             if (n % p == 0) {
      |                 ^
a.cc: In function 'int main()':
a.cc:45:5: error: 'll' was not declared in this scope
   45 |     ll ans=0;
      |     ^~
a.cc:46:9: error: 'i' was not declared in this scope
   46 |     rep(i,1,t+1){
      |         ^
a.cc:46:5: error: 'rep' was not declared in this scope
   46 |     rep(i,1,t+1){
      |     ^~~
a.cc:49:11: error: 'ans' was not declared in this scope; did you mean 'abs'?
   49 |     cout<<ans<<endl;
      |           ^~~
      |           abs
Language: C++

include <bits/stdc++.h> 
using namespace std;
// function to print the divisors 

void printDivisors(int n) 
{ 

    for (int i=1;i<=n;i++) 

        if (n%i==0) 

            printf("%d ",i); 
} 

  
/* Driver program to test above function */

int main() 
{ 

    printf("The divisors of 100 are: \n"); 
int n;
  cin>>n;
    printDivisors(n); 

    return 0; 
} 

Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include <bits/stdc++.h>
      | ^~~~~~~
a.cc: In function 'void printDivisors(int)':
a.cc:12:13: error: 'printf' was not declared in this scope
   12 |             printf("%d ",i);
      |             ^~~~~~
a.cc:1:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
  +++ |+#include <cstdio>
    1 | include <bits/stdc++.h>
a.cc: In function 'int main()':
a.cc:21:5: error: 'printf' was not declared in this scope
   21 |     printf("The divisors of 100 are: \n");
      |     ^~~~~~
a.cc:21:5: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
a.cc:23:3: error: 'cin' was not declared in this scope
   23 |   cin>>n;
      |   ^~~
Language: C++

#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
#define lli long long int
lli func(lli T);
lli func2(lli T);
int main()
{
    lli N;
    cin >> N;
    lli ans = 0;
    for (lli i = 1; i <= N; i++)
    {
        ans += i * func(i);
    }
    cout << ans << endl;
}

lli func(lli T)
{
    if (T == 0)
        return 0;
    if (T == 1)
        return 1;
    if(T%2==0}
        return func(T/2)+1;
    }
    return func(T/func2(T))+1;
    long double s=sqrt(T);
    lli res = 2;
    for (lli i = 2; i <= (lli)s; i++)
    {
        if (T % i == 0){
            if(i==s)res++;
            else res+=2;
        }
    }
    return res;
}

lli func2(lli T){
    for(lli i=2;;i++){
        if(T%i)return i;
    }
}

Compiler output:
a.cc: In function 'long long int func(long long int)':
a.cc:25:14: error: expected ')' before '}' token
   25 |     if(T%2==0}
      |       ~      ^
      |              )
a.cc:25:14: error: expected primary-expression before '}' token
a.cc: At global scope:
a.cc:26:9: error: expected unqualified-id before 'return'
   26 |         return func(T/2)+1;
      |         ^~~~~~
a.cc:27:5: error: expected declaration before '}' token
   27 |     }
      |     ^
a.cc:28:5: error: expected unqualified-id before 'return'
   28 |     return func(T/func2(T))+1;
      |     ^~~~~~
a.cc:29:24: error: 'T' was not declared in this scope
   29 |     long double s=sqrt(T);
      |                        ^
a.cc:31:5: error: expected unqualified-id before 'for'
   31 |     for (lli i = 2; i <= (lli)s; i++)
      |     ^~~
a.cc:31:21: error: 'i' does not name a type
   31 |     for (lli i = 2; i <= (lli)s; i++)
      |                     ^
a.cc:31:34: error: 'i' does not name a type
   31 |     for (lli i = 2; i <= (lli)s; i++)
      |                                  ^
a.cc:38:5: error: expected unqualified-id before 'return'
   38 |     return res;
      |     ^~~~~~
a.cc:39:1: error: expected declaration before '}' token
   39 | }
      | ^
a.cc: In function 'long long int func(long long int)':
a.cc:25:14: warning: control reaches end of non-void function [-Wreturn-type]
   25 |     if(T%2==0}
      |              ^
Language: C++

#include <bits/stdc++.h>
#include <math.h>

using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep2(i, s, n) for (int i = (s); i < (int)(n); i++)
typedef long long ll;
using Graph = vector<vector<int>>;
typedef long long ll;
typedef pair<int, int> P;

const int MOD = 1000000007;
const int INF_32 = 1LL << 30;
const int64_t INF_64 = 1LL << 60;

struct cww {
    cww()
    {
        ios::sync_with_stdio(false);
        cin.tie(0);
    }
} star;
std::vector<int> Eratosthenes(const int N)
{
    std::vector<bool> is_prime(N + 1);
    for (int i = 0; i <= N; i++) {
        is_prime[i] = true;
    }
    std::vector<int> P;
    for (int i = 2; i <= N; i++) {
        if (is_prime[i]) {
            for (int j = 2 * i; j <= N; j += i) {
                is_prime[j] = false;
            }
            P.emplace_back(i);
        }
    }
    return P;
}

vector<pair<long long, long long>> prime_factorize(long long N)
{
    vector<pair<long long, long long>> res;
    for (long long a = 2; a * a <= N; ++a) {
        if (N % a != 0)
            continue;
        long long ex = 0;
        while (N % a == 0) {
            ++ex;
            N /= a;
        }
        res.push_back({ a, ex });
    }
    if (N != 1)
        res.push_back({ N, 1 });
    return res;
}

ll ans = 0;
vector<bool> check(100000008);

void dfs(ll num, ll yk, vector<pair<ll, ll>>& pf)
{
    if (check(num))
        return;

    check(num) = true;
    for (int i = 0; i < pf.size(); i++) {
        if (pf[i].second >= 1) {
            pf[i].second = pf[i].second - 1;
            num /= pf[i].first;
            yk = yk / (pf[i].second + 1) * pf[i].second;
            ans += num * yk;
            dfs(num, yk, pf);
        }
    }
}

int main()
{
    ll N;
    cin >> N;
    vector<ll> check(N);
    for (ll k = N; k >= 1; k--) {
        if (check[k])
            continue;
        vector<pair<ll, ll>>& pf = prime_factorize(k);
        ll num = k;
        ll yk = 1;
        ans += k;
        for (auto p : pf)
            yk *= p.second + 1;
        dfs(k);
    }
    cout << ans << endl;

    return 0;
}


Compiler output:
a.cc: In function 'void dfs(ll, ll, std::vector<std::pair<long long int, long long int> >&)':
a.cc:64:14: error: no match for call to '(std::vector<bool>) (ll&)'
   64 |     if (check(num))
      |         ~~~~~^~~~~
a.cc:67:10: error: no match for call to '(std::vector<bool>) (ll&)'
   67 |     check(num) = true;
      |     ~~~~~^~~~~
a.cc: In function 'int main()':
a.cc:87:51: error: cannot bind non-const lvalue reference of type 'std::vector<std::pair<long long int, long long int> >&' to an rvalue of type 'std::vector<std::pair<long long int, long long int> >'
   87 |         vector<pair<ll, ll>>& pf = prime_factorize(k);
      |                                    ~~~~~~~~~~~~~~~^~~
a.cc:93:12: error: too few arguments to function 'void dfs(ll, ll, std::vector<std::pair<long long int, long long int> >&)'
   93 |         dfs(k);
      |         ~~~^~~
a.cc:62:6: note: declared here
   62 | void dfs(ll num, ll yk, vector<pair<ll, ll>>& pf)
      |      ^~~
Language: C++

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

int main() {
  int N;
  cin >> N;

  int ans = 1;
  int res = 0;
  
  for (int K = 1; K <= N; K++) {
    
  vector<int> x(K + 1);
  int n = K;

  for (int i = 2; i <= K; i++) {
    while (n % i == 0) {
      x.at(i)++;
      n /= i;
    }
  }

  for (int i = 2; i <= K; i++)　{	
    ans *= x.at(i) + 1;
  }
  
  res += K * ans;
    
  }
  
  cout << res << endl;
}

Compiler output:
a.cc:23:31: error: extended character 　 is not valid in an identifier
   23 |   for (int i = 2; i <= K; i++)　{
      |                               ^
a.cc: In function 'int main()':
a.cc:23:31: error: '\U00003000' was not declared in this scope
   23 |   for (int i = 2; i <= K; i++)　{
      |                               ^~
Language: C++

#include <bits/stdc++.h>
#include <string>
#include <algorithm>
#include <vector>
#include <stack>
#include <cmath>
using namespace std;
typedef long  double ll;
stack<char> sta;

ll solve(ll k){
    ll cnt = 0;
    ll kmax = sqrt(k);
    for(ll i=0; i<kmax; ++i){
        if(k%i==0){cnt++;}
    }
    return cnt;
}

int main(){
    ll n; cin >> n;
    ll sum = 0;
    
    for(ll i=0; i<n; ++i){sum += i * solve(i);}
    cout << sum << endl;
    return 0;
}

Compiler output:
a.cc: In function 'll solve(ll)':
a.cc:15:13: error: invalid operands of types 'll' {aka 'long double'} and 'll' {aka 'long double'} to binary 'operator%'
   15 |         if(k%i==0){cnt++;}
      |            ~^~
      |            | |
      |            | ll {aka long double}
      |            ll {aka long double}
Language: C++

#include <bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector")
#pragma GCC target("sse,sse2,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define watch(x) cout <<(#x)<<" is "<<(x)<<endl
#define debug cout <<"hi"<<endl
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
const int MOD=1e9+7;
const int INF32=1<<30;
const ll INF64=1LL<<60;
const int N=1e7;

bool prime[N+1],primesq[N+1];
void sieve(ll a[]){
  for(int i=2; i<=N; i++) prime[i]=1;
  for(int i=0; i<=N; i++) primesq[i]=0;
  prime[1]=0;
  for(int i=2; i*i<=N; i++){
    if(prime[i]) for(int j=i*2; j<=N; j+=i) prime[j]=0;
  }
  int xx=0;
  for(int i=2; i<=N; i++){
    if(prime[i]){a[xx]=i; primesq[i*i]=1; xx++;}
  }
}
ll div(ll z){
  if(z==1) return 1;
  sieve(ll a[N+1]);
  ll cnt=1;
  for(int i=0;; i++){
    if(i*i*i>z) break;
    ll tem=1;
    while(z%x==0){z/=x; tem++;}
    cnt*=tem;
  }
  if(prime[z]) cnt*=2;
  else if(primesq[z]) cnt*=3;
  else if(z-1) cnt*=4;
  return cnt;
}

int main(){
  ios_base::sync_with_stdio(0); cin.tie(0);
  ll n; cin >>n; ll sum=0;
  for(int i=1; i<=n; i++) sum+=i*div(i);
  cout <<sum;
return 0;}

Compiler output:
a.cc: In function 'll div(ll)':
a.cc:30:12: error: expected primary-expression before 'a'
   30 |   sieve(ll a[N+1]);
      |            ^
a.cc:35:13: error: 'x' was not declared in this scope
   35 |     while(z%x==0){z/=x; tem++;}
      |             ^
Language: C++

#include <bits/stdc++.h>
using ll = long long;
using namespace std;
#define rep(i,n) for(int i=0, i##_len=(int)(n); i<i##_len; i++)
#define reps(i,n) for(int i=1 , i##_len=(int)(n);i<=i##_len;i++)
#define rrep(i,n) for(int i=((int)(n)-1);i>=0;i--)
#define rreps(i,n) for(int i=((int)(n));i>0;i--)
#define repi(i,x) for(auto i=(x).begin(),i##_fin=(x).end();i!=i##_fin;i++)
#define all(x) (x).begin(), (x).end()
#define F first
#define S second
#define mp make_pair
#define pb push_back
#define solve(a) ((a)?"Yes":"No")
typedef vector<int> Vi;
typedef vector<Vi> VVi;
typedef pair<int , int> Pi;
typedef vector<Pi> VPi;
typedef vector<long long> V;
typedef vector<V> VV;
typedef pair<long long , long long> P;
typedef vector<P> VP;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1;} return 0;}
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1;} return 0;}
const long long INFLL = 1LL<<60;
const int INF = 1<<30;
const double PI=acos(-1);
int main(){
	int n;
	ll ans=1;
	cin >>n;
	vector<map<int,int>>dis(n+1);
	dis[1][1]=1;
	for(int i=2;i<=n;i++){
		if(dis[i].size()==0 or dis[i].size()==1){
			if(dis[i].size()==0){
				dis[i][i]=0;
			}

			for(int s=i;s<=n;s+=i){
				dis[s][dis[i].begin()->F]+=0;
				dis[s][dis[i].begin()->F] ++;
			}
		}
		c=1LL;
		repi(itr, dis[i])
		{
			c *= (1 + (itr->S));
			//clog<<(itr->F)<<" ";
		}
		ans += c * i;
	}
	
	cout<<ans<<endl;

}
/*
2  1 2 =>2   2
3  1 3 ->2        3
4  1 2 4 => 3    2^2
6 1 2 3 6 -> 4            2 3
12 => 1 2 3 4 6  12 => 6  2^2 3
2 3 5 => 8 (30)
2 3 => 4 (6)

1 1   1
2 4 (1)   5
3 6    11
4 12  (2) 23
5 10  33
6 24   57
7 14   71
8 32 (4)  103


16 60 (5)

2 ^1 2 * 2^1 = n*2

2^2  3 * 2^2 -> 3*2n

2^3  4 * 2-3 4* 2^2 n

2^4  5 * 2^4 5*2^3 n

2 3 => 4 * n*3

*/


Compiler output:
a.cc: In function 'int main()':
a.cc:45:17: error: 'c' was not declared in this scope
   45 |                 c=1LL;
      |                 ^
Language: C++

#include <iostream>
#include <math.h>
using namespace std;

int main() {
    int n ;
    cin >> n;
    for (int j = 0 ; j < n ; j++ ){
        int A[j] = n ;
        n-- ;
    }
    int cnt = 0; 
    for (int i = 0; i <= sqrt(n - i); i++) { 
        int a = 1;
        if (n % a == 0) { 
            if (n / a == i) 
                cnt++; 
            else 
                cnt = cnt + 2;
        a++;
        int B =0;
        B = B + (A[i] * cnt); 
            
        }
        
            
    }
    cout << B ;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:20: error: array must be initialized with a brace-enclosed initializer
    9 |         int A[j] = n ;
      |                    ^
a.cc:22:18: error: 'A' was not declared in this scope
   22 |         B = B + (A[i] * cnt);
      |                  ^
a.cc:28:13: error: 'B' was not declared in this scope
   28 |     cout << B ;
      |             ^
Language: C++

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

signed main(){
  int N;
  cin >> N;
  vector<int>A(N);
  unsigned long long int count=0;
  unsigned long long int ans=0;
  for(int K=1;K<=N;K++){
    if(K==N){
      for(int i=0;i<K;i++){
        if(K%i==0){
          count++;
        }
      }
      ans+=count*K;
      A[i]==count*K;
    }
    else{
      ans+=A[K];
    }
    count=0;
  }
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:9: error: 'i' was not declared in this scope
   18 |       A[i]==count*K;
      |         ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i,s,n) for(int i=s;i<n;i++)
#define NUM 1000000
int main()
{
  long long a[NUM];
  long long N;
  cin >> N;
  int =1;
  long long ans=0;
  while(i<N)
  {
    if(N%i==0)
      ans+=i+N;
  	N/=i;
    i++;
  }
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:7: error: expected unqualified-id before '=' token
   10 |   int =1;
      |       ^
a.cc:12:9: error: 'i' was not declared in this scope
   12 |   while(i<N)
      |         ^
Language: C++

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

int yakusuu(int n){
vector<int> x(n + 1);
	int num = n;// 素因数分解する変数num 
  	int ans = 1;

	for (int i = 2; i <= n; i++) {
		while (num%i == 0) {// 素数で割り切れなくなるまで割っていく
			x.at(i)++;//割った個数を配列に足す
			num /= i;
		}
	}

	for (int i = 2; i <= n; i++)
	{	
		ans *= x.at(i) + 1;//それぞれを+1して掛けていく
    }
	return ans;
}

int main()
{
	int n;
	int ans = 0;
	cin >> n;
	
  for(int i = 0 ; i < N ; i++){
  	ans += yakusuu(i)*i;
  }
	cout << ans << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:29:23: error: 'N' was not declared in this scope
   29 |   for(int i = 0 ; i < N ; i++){
      |                       ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#include<set> 
#include<math.h>
#define pai arccos(-1);
#define keta(n) cout << fixed << setprecision((n));
#define ll long long;
int func(int x){
  int count=0;
  for(int i=1;i<=x;i++){
    if(x%i==0){
      count++;
    }
  }
  return count;
}
int main(){
  int n;
  cin>>n;
  int sum=0;
  for(int i= 1;i<=4;i++){
    int sum += func(i)*i;
  }
  cout<<sum;
  
  
 
}


Compiler output:
a.cc: In function 'int main()':
a.cc:23:13: error: expected initializer before '+=' token
   23 |     int sum += func(i)*i;
      |             ^~
Language: C++

#include<bits/stdc++.h>
#include"debug.h"
using namespace std;
long long N,ans;

vector<int> IsPrime(int n){
	vector<int>IsPrime(n+1,1);//1で初期化
	IsPrime[0]=0;IsPrime[1]=0;//0と1は非素数
	for(int i=2;i*i<=n;i++)if(IsPrime[i])for(int j=i*2;j<=n;j+=i)IsPrime[j]=0;
	return IsPrime;
}

map<long long,int>prime_factor(long long n){
	map<long long,int>factor;
    for(long long i=2LL;i*i<=n;i++)while(n%i==0LL){factor[i]++;n/=i;}
    if(n!=1LL)factor[n]=1;
    return factor;
}

int main(){
    cin>>N;
    vector<long long>F(N+1,0LL);
    F[1]=1LL;

    auto prime=IsPrime(N);

    for(int i=0;i<=N;i++){
        if(prime[i]){
            long long tmp=i,cnt=2LL;
            while(tmp<=N){
                F[tmp]=cnt;
                tmp*=i;
                cnt++;
            }
            
        }
        
    }
    for(int i=4;i<=N;i++){
        if(F[i]!=0LL)continue;

        for(int j=2;j*j<=i;j++){

            if(i%j==0){
                int tmp=i/j,cnt=1;
                while(tmp%j==0){tmp/=j;cnt++;}
                F[i]=F[i/j]/(cnt)*(cnt+1);
            }
        }
        // auto m=prime_factor(i);
        // long long tmp=1LL;
        // for(auto x:m){
        //     tmp*=x.second+1;
        // }
        // F[i]=tmp;
    }
    for(int i=1;i<=N;i++)ans+=i*F[i];
    cout<<ans<<endl;
    return 0;
}

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

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

int main()
{
    int N;
    cin >> N;
    long long kosuu=0;
    

    
    

    long long cnt = 0;

    for (int i = 1; i <= N; i++) {
                 
          for (long long j = 1; j * j <= i; j++) {
              if (i % j == 0) {
                kosuu+=1;
                  if(j*j!=i){
                      kosuu+=1;
                  }
              }
              
          }
        cnt+=i*kosuu;
        kosuu=0;
    }

    
    cout << cnt << endl;
    return 0;
}


Compiler output:
a.cc:2:18: error: declaration does not declare anything [-fpermissive]
    2 | #define int long long;
      |                  ^~~~
a.cc:5:1: note: in expansion of macro 'int'
    5 | int main()
      | ^~~
a.cc:5:5: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    5 | int main()
      |     ^~~~
a.cc: In function 'int main()':
a.cc:2:18: error: declaration does not declare anything [-fpermissive]
    2 | #define int long long;
      |                  ^~~~
a.cc:7:5: note: in expansion of macro 'int'
    7 |     int N;
      |     ^~~
a.cc:7:9: error: 'N' was not declared in this scope
    7 |     int N;
      |         ^
a.cc:2:18: error: declaration does not declare anything [-fpermissive]
    2 | #define int long long;
      |                  ^~~~
a.cc:17:10: note: in expansion of macro 'int'
   17 |     for (int i = 1; i <= N; i++) {
      |          ^~~
a.cc:17:14: error: 'i' was not declared in this scope
   17 |     for (int i = 1; i <= N; i++) {
      |              ^
a.cc:17:27: error: expected ')' before ';' token
   17 |     for (int i = 1; i <= N; i++) {
      |         ~                 ^
      |                           )
a.cc:17:29: error: 'i' was not declared in this scope
   17 |     for (int i = 1; i <= N; i++) {
      |                             ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define N 10000000

typedef long long ll;
const ll INF = (1e8);
const ll mod = (1e9 + 7);
ll f[maxn];
void init(){
    for(ll i = 1;i * i <= N;i++){
        for(ll j = i;i * j <= N;j++){
            f[i * j] += 2;
            if(i == j)f[i * j]--;
        }
    }
}
int main(){
    init();
    ll n;scanf("%lld",&n);
    ll ans = 0;
    for(ll i = 1;i <= n;i++){
        ans += f[i] * i;
    }
    printf("%lld\n",ans);
    return 0;
}

Compiler output:
a.cc:8:6: error: 'maxn' was not declared in this scope
    8 | ll f[maxn];
      |      ^~~~
a.cc: In function 'void init()':
a.cc:12:13: error: 'f' was not declared in this scope
   12 |             f[i * j] += 2;
      |             ^
a.cc: In function 'int main()':
a.cc:22:16: error: 'f' was not declared in this scope
   22 |         ans += f[i] * i;
      |                ^
Language: C++

#include <iostream>
#include<algorithm>
#include<cstdio>
#include<cmath>
#include<limits>
#include<string.h>
#include<vector>
#include<stack>
#include<queue>
using namespace std;

int main()
{
    int x;
    cin>>x;
    int y=1;
    int k;
    int z[10000100];
    int r,l;
    z[1]=1;
    
    int func(int n){
        for(int i=func(n-1);i<)
    }
    for(int j=2;j<=x+1;j++){
        y=1;
        r=sqrt(j)+1;
        l=j;

        for(int i=2;i<=r;i++){
            k=1;
            if(l==1){
                break;
            }else if(l%i==0){
                while (l%i==0)
                {
                    l=l/i;
                    k++;
                }
                y=y*k;
            }


        }
        if(l!=1){
            y=y*2;
        }
        z[j]=y;  
    }
    int s=0;
    for(int i=1;i<=x;i++){
        s+=i*z[i];

    }
    cout<<s<<endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:20: error: a function-definition is not allowed here before '{' token
   22 |     int func(int n){
      |                    ^
Language: C++

#include<iostream>
#include<vector>
#include<string>
#include<algorithm>
#include <queue>
#include<map>
using namespace std;
template<typename T>
vector<T> smallest_prime_factors(T n) {

    vector<T> spf(n + 1);
    for (int i = 0; i <= n; i++) spf[i] = i;


    for (T i = 2; i * i <= n; i++) {

        // 素数だったら
        if (spf[i] == i) {

            for (T j = i * i; j <= n; j += i) {

                // iを持つ整数かつまだ素数が決まっていないなら
                if (spf[j] == j) {
                    spf[j] = i;
                }
            }
        }
    }

    return spf;
}

template<typename T>
vector<T> factolization(T x, vector<T>& spf) {
    vector<T> ret;
    while (x != 1) {
        ret.push_back(spf[x]);
        x /= spf[x];
    }
    sort(ret.begin(), ret.end());
    return ret;
}
template <typename T>
T divisor_num(T N, vector<T>& spf) {
    map<T, T> pf = factolization(N,spf);
    T ret = 1;
    for (auto p : pf) {
        ret *= (p.second + 1);
    }
    return ret;
}
long long N;
int main() {
    cin >> N;
    auto spf = smallest_prime_factors(10000000);
    long long int ans = 0;
    for (long long int i = 1; i <= N; i++) {
        ans += i * divisor_num(i,spf);
    }
    cout << ans;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:58:31: error: no matching function for call to 'divisor_num(long long int&, std::vector<int, std::allocator<int> >&)'
   58 |         ans += i * divisor_num(i,spf);
      |                    ~~~~~~~~~~~^~~~~~~
a.cc:44:3: note: candidate: 'template<class T> T divisor_num(T, std::vector<_Tp>&)'
   44 | T divisor_num(T N, vector<T>& spf) {
      |   ^~~~~~~~~~~
a.cc:44:3: note:   template argument deduction/substitution failed:
a.cc:58:31: note:   deduced conflicting types for parameter '_Tp' ('long long int' and 'int')
   58 |         ans += i * divisor_num(i,spf);
      |                    ~~~~~~~~~~~^~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
using str = string;
using ll = long long;
#define REP(i,n) for(int i=0; i<int(n); i++)
#define RREP(i,n) for(int i=int(n)-1; i>=0; i--)
#define FOR(i,f,t) for(int i=int(f); i<=int(t); i++)
#define RFOR(i,f,t) for(int i=int(f); i>=int(t); i--)
#define ALL(vec) (vec).begin(),(vec).end()
#define ASORT(vec) sort(ALL(vec))
#define DSORT(vec) sort(ALL(vec), greater<int>());
#define MAX(x) *max_element(ALL(x))
#define MIN(x) *min_element(ALL(x))
#define YES(ans) if(ans) cout<<"YES"<<endl; else cout<<"NO"<<endl;
#define Yes(ans) if(ans) cout<<"Yes"<<endl; else cout<<"No"<<endl;
#define yes(ans) if(ans) cout<<"yes"<<endl; else cout<<"no"<<endl;

ll count(ll n) {
    vector<ll> data;
    for(ll i=1; i*i<=n; i++) {
        if(n%i == 0) {
            data.push_back(i);
            if (n/i != i) data.push_back(N/i);
        }
    }
    return data.size();
}

int main() {
    int n;
    cin >> n;
    ll s=0;
    REP(i, n) s += (i+1) * count(i+1);
    cout << s << endl;
}


Compiler output:
a.cc: In function 'll count(ll)':
a.cc:23:42: error: 'N' was not declared in this scope
   23 |             if (n/i != i) data.push_back(N/i);
      |                                          ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main() {
ll n;
cin>>n;
ll counter=1;
ll c=0;
for(ll i=2; i<=n; i++){
for (long long a = 2; a * a <= i; ++a) {
        if (N % a != 0) continue;
        else if(a*a!=i){
        c=c+2;}
        else c++;}
counter+=c*i;}
cout << counter << endl;}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:13: error: 'N' was not declared in this scope
   11 |         if (N % a != 0) continue;
      |             ^
Language: C++

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

int divi(int n) 
{
	int ans = 1;

	vector<int> x(n + 1);
	int num = n; // 素因数分解する変数num 

	for (int i = 2; i <= n; i++) {
		while (num%i == 0) { // 素数で割り切れなくなるまで割っていく
			x.at(i)++;　//割った個数を配列に足す
			num /= i;
		}
	}

	for (int i = 2; i <= n; i++)
	{	
		ans *= x.at(i) + 1;　//それぞれを+1して掛けていく
	}
	return ans;
}

int main() {
    int n;
    cin >> n;
    int anser = 0;
    for (int i = 1; i <= n; i++) {
        anser += i * divi(i);
    }
    cout << anser << endl;
}

Compiler output:
a.cc:13:35: error: extended character 　 is not valid in an identifier
   13 |                         x.at(i)++;　//割った個数を配列に足す
      |                                   ^
a.cc:20:36: error: extended character 　 is not valid in an identifier
   20 |                 ans *= x.at(i) + 1;　//それぞれを+1して掛けていく
      |                                    ^
a.cc: In function 'int divi(int)':
a.cc:13:35: error: '\U00003000' was not declared in this scope
   13 |                         x.at(i)++;　//割った個数を配列に足す
      |                                   ^~
a.cc:20:36: error: '\U00003000' was not declared in this scope
   20 |                 ans *= x.at(i) + 1;　//それぞれを+1して掛けていく
      |                                    ^~
Language: Java

import java.util.*;
import java.util.Scanner;

public class ABC170 {
	static Scanner sc=new Scanner(System.in);
	static int x=sc.nextInt();
	static int[] a=new int[x+1];
	
	public static void main(String[] args) {
	    a[1]=1;
	    for(int i=2;i<=x;i++) {
	    	a[i]=1;
	    }
	    int ans=0;
	    if(x>=1)ans=1;
	    if(x>=2)ans=5;
		//int t=x;
		if(x<=2) {
			System.out.println(ans);
			System.exit(0);
		}
		for(int i=3;i<=x;i++)   {
		    int check=1;
			for(int j=i/2+1;j>=1;j--) {
				if(i%j==0){
					check++;
				}
			}
		//	System.out.println(i+" "+check);
			//a[i]=check;
			ans+=i*check;
		}
	    
	    
	    System.out.println(ans);
	}
}


Compiler output:
Main.java:4: error: class ABC170 is public, should be declared in a file named ABC170.java
public class ABC170 {
       ^
1 error
Language: C++

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

vector<pair<long long, long long> > prime_factorize(long long N) {
    vector<pair<long long, long long> > res;
    for (long long a = 2; a * a <= N; ++a) {
        if (N % a != 0) continue;
        long long ex = 0;
        while (N % a == 0) {
            ++ex;
            N /= a;
        }
        res.push_back({a, ex});
    }
    if (N != 1) res.push_back({N, 1});
    return res;
}
int main(){
  int n;
  unsigned long long ans=0;
  cin >> n;
  for(int i=0;i<n;i++){
    ans+=i*prime_factorize(i);
  }
  cout << ans; 
}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:11: error: no match for 'operator*' (operand types are 'int' and 'std::vector<std::pair<long long int, long long int> >')
   24 |     ans+=i*prime_factorize(i);
      |          ~^~~~~~~~~~~~~~~~~~~
      |          |                |
      |          int              std::vector<std::pair<long long int, long long int> >
Language: C++

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

int main()
{
    int N;
    cin >> N;
    long long kosuu=0;
    

    
    

    long long cnt = 0;

    for (int i = 1; i <= N; i++) {
                 
          for (long long j = 1; j * j <= i; j++) {
              if (i % j == 0) {
                kosuu+=1;
                  if(j*j!=i){
                      kosuu+=1;
                  }
              }
              
          }
        cnt+=i*kosuu;
        kosuu=0;
    }

    
    cout << cnt << endl;
    return 0;
}


Compiler output:
cc1plus: error: '::main' must return 'int'
Language: Java

import java.util.Scanner;
public class Codespeedy {
  public static void main(String[] args) {
    Scanner input=new Scanner(System.in);
    System.out.println("Enter the number:");
    int number=input.nextInt();
    int j = 0;
    
         for(int i = 1; i <= number; i++) {
             if (number % i == 0) {
                 j = j + i; 
             }
             
         
         }
         
         System.out.println(j);
}
}

Compiler output:
Main.java:2: error: class Codespeedy is public, should be declared in a file named Codespeedy.java
public class Codespeedy {
       ^
1 error
Language: C++

int main(){
    int n;
    cin>>n;
    vector<bool> done(n+1,false);
    done[0]=true;
    done[1]=true;
    long long ans=0;
    //みんなiを約数にもつ
    for(int i=1;i<n+1;i++){
        ans+=i;
    }
    for(int i=2;i<=n;i++){
        if(done[i]) continue;
        int x=i;
        while(1){
            for(int j=x;j<n+1;j+=x){
                ans+=j;
            }
            done[x]=true;
            if(n/i<x)break;
            x*=i;
        }
    }
    cout<<ans<<endl;
    return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:3:5: error: 'cin' was not declared in this scope
    3 |     cin>>n;
      |     ^~~
a.cc:4:5: error: 'vector' was not declared in this scope
    4 |     vector<bool> done(n+1,false);
      |     ^~~~~~
a.cc:4:12: error: expected primary-expression before 'bool'
    4 |     vector<bool> done(n+1,false);
      |            ^~~~
a.cc:5:5: error: 'done' was not declared in this scope
    5 |     done[0]=true;
      |     ^~~~
a.cc:24:5: error: 'cout' was not declared in this scope
   24 |     cout<<ans<<endl;
      |     ^~~~
a.cc:24:16: error: 'endl' was not declared in this scope
   24 |     cout<<ans<<endl;
      |                ^~~~
Language: C++

#include<iostream>
using namespace std;
int main()
{
int n;
int sum=0,count=0;
int i,j;
cin>>n;
for(i=1;i<=n;i++)
{
for(j=2;j<=i;j++)
{
if (i%j==0)
{
count++;
}
}
for(i=0;i<n;i++)
{
sum=sum+i*count;
}
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:2: error: expected '}' at end of input
   23 | }
      |  ^
a.cc:4:1: note: to match this '{'
    4 | {
      | ^
Language: C++

#include<iostream>
int main()
{
int n;
int sum=0,count=0;
int i,j;
cin>>n;
for(i=1;i<=n;i++)
{
for(j=2;j<=i;j++)
{
if (i%j==0)
{
count++;
}
}
for(i=0;i<n;i++)
{
sum=sum+i*count;
}
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:1: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    7 | cin>>n;
      | ^~~
      | std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:22:2: error: expected '}' at end of input
   22 | }
      |  ^
a.cc:3:1: note: to match this '{'
    3 | {
      | ^
Language: C++

/**
 * @copyright (c) 2020 Daisuke Hashimoto
 */

#include <bits/stdc++.h>
using namespace std;
using Pair = pair<int64_t, int64_t>;
constexpr int64_t kInf = INT64_MAX / 2L;

// std::cout << std::setprecision(20) << 1.1 << endl;

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

  int64_t N;
  cin >> N;
  const int64_t kLim = static_cast<int64_t>(sqrt(static_cast<double>(N)));
  vector<int64_t> yakusuu(kLim + 1, 2);
  yakusuu[0] = 0;
  yakusuu[1] = 1;
  int64_t result = 0;
  for (int64_t i = 2; i * i <= N; ++i) {
    for (int64_t j = 2 * i; j <= N; j += i) {
      ++yakusuu[j];
    }
  }

  int64_t result = 0;
  for (int64_t K = 1; K <= N; ++K) {
    result += K * yakusuu[K];
  }
  cout << result << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:29:11: error: redeclaration of 'int64_t result'
   29 |   int64_t result = 0;
      |           ^~~~~~
a.cc:22:11: note: 'int64_t result' previously declared here
   22 |   int64_t result = 0;
      |           ^~~~~~
Language: C++

#include<iostream.h>
int main()
{
int n;
int sum=0,count=0;
int i,j;
cin>>n;
for(i=1;i<=n;i++)
{
for(j=2;j<=i;j++)
{
if (i%j==0)
{
count++;
}
}
for(i=0;i<n;i++)
{
sum=sum+i*count;
}
return 0;
}

Compiler output:
a.cc:1:9: fatal error: iostream.h: No such file or directory
    1 | #include<iostream.h>
      |         ^~~~~~~~~~~~
compilation terminated.
Language: Java

import java.math.*;
import java.util.*;

public class Main {
  	private static int[] factors;
  
	public static void main(String[] args) {
      Scanner sc = new Scanner(System.in);
      int K = sc.nextInt();
  	  factors = new int[K];
      
      long ans = 1;
      factors[1] = 1;
      factors[2] = 2;
      factors[3] = 2;
      if (K <=3) {
        System.out.println(factors[K]);
      }
      
      for (int i = 4; i <= K; i++) {
      	ans += (i * f(i));
      }
      
      System.out.println(ans);
    }
  
  	private static long f(int num) {
      	double sqrt = Math.sqrt(num);
      	int iSqrt = (int) sqrt;
      	if (iSqrt * iSqrt == num) {
          // Pure square
          return factors[iSqrt] + 1;
        }
      
      	int count = 1;
 		for (int i = 2; i <= max; i++) {
        	if (num % i == 0) {
              count++;
            }
        }
      	factors[num] = count;
      	return count;
    }
}


Compiler output:
Main.java:36: error: cannot find symbol
 		for (int i = 2; i <= max; i++) {
 		                     ^
  symbol:   variable max
  location: class Main
1 error
Language: C++

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

int main() {
  int N, f, s = 0;
  cin >> N;
  
  for (int i = 1; i <= N; i++) {
    f = 0;
    for (int j = 1; j <= sqrt(i); j++) if (i % j == 0) f++;
    if (sqrt(i) % 1 != 0) s--;
    s += i * 2 * f;
  }
  
  cout << s << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:17: error: invalid operands of types '__gnu_cxx::__enable_if<true, double>::__type' {aka 'double'} and 'int' to binary 'operator%'
   11 |     if (sqrt(i) % 1 != 0) s--;
      |         ~~~~~~~ ^ ~
      |             |     |
      |             |     int
      |             __gnu_cxx::__enable_if<true, double>::__type {aka double}
Language: Java

import java.math.*;
import java.util.*;

public class Main {
  	private static int[] factors;
  
	public static void main(String[] args) {
      Scanner sc = new Scanner(System.in);
      int K = sc.nextInt();
  	  factors = new int[K];
      
      long ans = 1;
      factors[1] = 1;
      factors[2] = 2;
      factors[3] = 2;
      if (K <=3) {
        return factors[K];
      }
      
      for (int i = 4; i <= K; i++) {
      	ans += (i * f(i));
      }
      
      System.out.println(ans);
    }
  
  	private static long f(int num) {
      	double sqrt = Math.sqrt(num);
      	int iSqrt = (int) sqrt;
      	if (iSqrt * iSqrt == num) {
          // Pure square
          return factors[iSqrt] + 1;
        }
      
      	int count = 1;
 		for (int i = 2; i <= max; i++) {
        	if (num % i == 0) {
              count++;
            }
        }
      	factors[num] = count;
      	return count;
    }
}


Compiler output:
Main.java:17: error: incompatible types: unexpected return value
        return factors[K];
                      ^
Main.java:36: error: cannot find symbol
 		for (int i = 2; i <= max; i++) {
 		                     ^
  symbol:   variable max
  location: class Main
2 errors
Language: C++

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

ll yaku(ll N){

  ll count=0;
  for(ll i=1;i<=N/2;i;i++){
    
    if(N%i==0)count++;
  }
  return count++;
}


int main(){
  ll N;
  ll sum=0;
  cin >> N;
  for(ll i=1;i<=N;i++){
    
    sum+=i*yaku(i);
  }
  
  cout << sum << endl;
}
  




Compiler output:
a.cc: In function 'll yaku(ll)':
a.cc:8:22: error: expected ')' before ';' token
    8 |   for(ll i=1;i<=N/2;i;i++){
      |      ~               ^
      |                      )
a.cc:8:23: error: 'i' was not declared in this scope
    8 |   for(ll i=1;i<=N/2;i;i++){
      |                       ^
Language: C++

#include <algorithm>
#include <iostream>
#include <set>
#include <map>
#include <math.h>
#include <vector>
 
#define MOD 1000000007
typedef long long ll;
 
using namespace std;

int divCount(bool* hash, int n) { 
    int total = 1; 
    for (int p = 2; p <= n; p++) { 
        if (hash[p]) { 
            int count = 0; 
            if (n % p == 0) { 
                while (n % p == 0) { 
                    n = n / p; 
                    count++; 
                } 
                total = total * (count + 1); 
            } 
        } 
    } 
    return total; 
} 

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

	ll n, ans;
	cin >> n;
	bool hash[n + 1];
	memset(hash, true, sizeof(hash));
	for (int p = 2; p * p < n; p++) 
        if (hash[p] == true) 
            for (int i = p * 2; i < n; i += p) 
                hash[i] = false;

	for(int i=1; i<=n; i++) {
		ans += i * divCount(hash, i);
	}

	cout << ans << '\n';

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:37:9: error: 'memset' was not declared in this scope
   37 |         memset(hash, true, sizeof(hash));
      |         ^~~~~~
a.cc:7:1: note: 'memset' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    6 | #include <vector>
  +++ |+#include <cstring>
    7 |
Language: C++

#include<iostream>
#include<queue>
#include<algorithm>
#include<iomanip>
using namespace std;
long long sum[10000005] = { 0 };

int main() {
	int N;
	cin >> N;
	sum[1] = 1;
	long long s = 1;
	for (int i = 2;i <= N;i++) {
		int t = sqrt(i);
		for (;t >= 1;t--) {
			if (i % t == 0 && i != t * t) { 

				sum[i] = 2 * sum[t];
				break;
			}
			else if (i % t == 0 && i == t * t) {
				sum[i] = 2 * sum[t] - 1;
				break;
			}
		}
		s += sum[i] * i;
	}
	cout << s;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:25: error: 'sqrt' was not declared in this scope
   14 |                 int t = sqrt(i);
      |                         ^~~~
Language: C

#include <algorithm>
#include <string>
#include <iostream>
#include <vector>
#include <stdio.h>
#include <math.h>

using namespace std;
int N;

vector<long long> divisor(long long n)
{
    vector<long long> ret;
    for (long long i = 1; i * i <= n; i++)
    {
        if (n % i == 0)
        {
            ret.push_back(i);
            if (i * i != n)
                ret.push_back(n / i);
        }
    }
    sort(ret.begin(), ret.end()); // 昇順に並べる
    return ret;
}

int main()
{
    cin.tie(0);
    cin >> N;
    long long ans = 0;
    for(long long k = 1; k < N+1; k++){
        ans += k * divisor(k).size();
    }
    cout << ans <<  "\n";
}

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

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


int yakusuu(long longn){
  long long ans = 1;
  
  for(long long i=2;i<= sqrt(n);i++){
    long long cnt = 0;
    while(n % i == 0){
      cnt++;
      n /= i;
    }
   ans *= (cnt + 1);
    if(n == 1){
      break;
    }
  }
    if(n != 1){
      ans *= 2;
    }
    
return ans;
}

  
  
int main(){
  long long n;
  cin >> n;
  long long a=0;
  for(long long i=1;i<n+1;i++){
    a += ((i*i+i) * yakusuu(i))/2;
  }
  cout << a << endl;
}

  


Compiler output:
a.cc: In function 'int yakusuu(long int)':
a.cc:8:30: error: 'n' was not declared in this scope
    8 |   for(long long i=2;i<= sqrt(n);i++){
      |                              ^
a.cc:19:8: error: 'n' was not declared in this scope; did you mean 'yn'?
   19 |     if(n != 1){
      |        ^
      |        yn
Language: C++

#include <stdlib.h>
#include <stdio.h>
#include <cmath>
#include <algorithm>
#include <vector>
#include <map>
#include <iostream>
#include <set>
#include <string>

using namespace std;

int const N = 10000000;
int prime[N+1];

void sieve() {

    memset(prime, true, sizeof(prime)); 

    for(int i=2;i*i<=N;i++) {
        if(prime[i]) {
            for (int j=i*2; j<=N; j += i) 
                prime[j] = false; 
        }
    }
}

int n;
int factors(int x) {

    int i = 1;
    int cnt = 0;
    while(i*i <= x) {
        
        if(x % i == 0) {
            cnt++;
            
            if(x/i != i) {
               cnt++;
            }
        }
        i++;
    }
    
    return cnt;
}

int divisors(int n) 
{ 
    int cnt = 0; 
    for (int i = 1; i <= sqrt(n); i++) { 
        if (n % i == 0) { 
            if (n / i == i) 
                cnt++; 
            else
                cnt = cnt + 2; 
        } 
    } 
    return cnt; 
} 

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

    cin>>n;
    sieve();

    long long int res = 0;
    res+=1;
    for(int i=2;i<=n;i++) {
        if(prime[i]) {
            res+=i*2;
        }
        else {
            res+=(long long int ) i * (long long int ) divisors(i); 
        }
    }
    cout<<res<<endl;
    
    return 0;
}

Compiler output:
a.cc: In function 'void sieve()':
a.cc:18:5: error: 'memset' was not declared in this scope
   18 |     memset(prime, true, sizeof(prime));
      |     ^~~~~~
a.cc:9:1: note: 'memset' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    8 | #include <set>
  +++ |+#include <cstring>
    9 | #include <string>
Language: Java

import java.util.Scanner;

public class B163 {


	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		long n = sc.nextLong();
		long ans = 0;
		for(int i=1;i<=n;i++) {
			ans+=fun(i);
		}
		System.out.println(ans);
	}
	public static long fun(long x) {
		long ans=0;
		long count=0;
		for(int i=1;i<=x;i++) {
			if(x%i==0)count++;
		}

		return x*count;
	}
}

Compiler output:
Main.java:3: error: class B163 is public, should be declared in a file named B163.java
public class B163 {
       ^
1 error
Language: C++

#include<iostream>
using namespace std;
int div[10000005];
int main()
{
    int n;
    cin>>n;
    
    for(int i=0; i<n+1; i++) 
    div[i]=0;
    for(int i=1; i<=n; i++) {
        for(int j=1; j*i<=n; j++) {
            div[i*j]++;
        }
    }
    long long sum=0;
    for(int i=1; i<=n; i++)
     sum+=i*div[i];
    cout<<sum<<endl;
    return 0;
}


Compiler output:
a.cc:3:17: error: 'int div [10000005]' redeclared as different kind of entity
    3 | int div[10000005];
      |                 ^
In file included from /usr/include/c++/14/cstdlib:79,
                 from /usr/include/c++/14/ext/string_conversions.h:43,
                 from /usr/include/c++/14/bits/basic_string.h:4154,
                 from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/stdlib.h:992:14: note: previous declaration 'div_t div(int, int)'
  992 | extern div_t div (int __numer, int __denom)
      |              ^~~
a.cc: In function 'int main()':
a.cc:10:8: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   10 |     div[i]=0;
      |        ^
a.cc:13:16: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   13 |             div[i*j]++;
      |                ^
a.cc:18:16: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   18 |      sum+=i*div[i];
      |                ^
Language: C++

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

ll yaku(ll N){
  map<ll,ll> S;
	while(N%2==0){
      S[2]=++S[2];
	  N>>=1;	
	}
    if(2<N/2){
	for(long i=3;i<N/i;i+=2){
		while(N%i==0){
			N/=i;
			S[i]=++S[i];
		}
	}
      S[N]=1;
    }
  
  ll sum=1;
  for(pair<ll,ll> i:S){
    sum*=i.second+1;
  }
  return sum;
}


int main(){
  ll N;
  ll sum=0;
  for(ll i=1;i<=N;i++){
    
    sum+=i*yaku(i);
  }
  
  cout << sum << endl;
}
  
}



Compiler output:
a.cc:40:1: error: expected declaration before '}' token
   40 | }
      | ^
Language: C++

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

ll yaku(ll N){
  map<ll,ll> S;
	while(N%2==0){
      S[2]=++S[2];
	  N>>=1;	
	}
    if(2<N/2){
	for(long i=3;i<N/i;i+=2){
		while(N%i==0){
			N/=i;
			S[i]=++S[i];
          count++;
		}
	}
      S[N]=1
    }
  
  ll sum=1;
  for(pair<ll,ll> i:S){
    sum*=i.second+1;
  }
  return sum;
}


int main(){
  ll N;
  ll sum=0;
  for(ll i=1;i<=N;i++){
    
    sum+=i*yaku(i);
  }
  
  cout << sum << endl;
}
  
}



Compiler output:
a.cc: In function 'll yaku(ll)':
a.cc:16:16: error: no post-increment operator for type
   16 |           count++;
      |                ^~
a.cc:19:13: error: expected ';' before '}' token
   19 |       S[N]=1
      |             ^
      |             ;
   20 |     }
      |     ~        
a.cc: At global scope:
a.cc:41:1: error: expected declaration before '}' token
   41 | }
      | ^