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

#include <iostream>
#include <string>
 
class Radix {
private:
  const char* s;
  int a[128];
public:
  Radix(const char* s = "0123456789ABCDEF") : s(s) {
    int i;
    for(i = 0; s[i]; ++i)
      a[(int)s[i]] = i;
  }
  std::string to(long long p, int q) {
    int i;
    if(!p)
      return "0";
    char t[64] = { };
    for(i = 62; p; --i) {
      t[i] = s[p % q];
      p /= q;
    }
    return std::string(t + i + 1);
  }
  std::string to(const std::string& t, int p, int q) {
    return to(to(t, p), q);
  }
  long long to(const std::string& t, int p) {
    int i;
    long long sm = a[(int)t[0]];
    for(i = 1; i < (int)t.length(); ++i)
      sm = sm * p + a[(int)t[i]];
    return sm;
  }
};
 
int main() {
    Radix r;
  	long long n;
  	int k;
  	std::cin >> n >> k;
    std::cout << std::stoi(r.to(n, k).length()) << std::endl;
  
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:42:27: error: no matching function for call to 'stoi(std::__cxx11::basic_string<char>::size_type)'
   42 |     std::cout << std::stoi(r.to(n, k).length()) << std::endl;
      |                  ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
In file included 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/c++/14/bits/basic_string.h:4164:3: note: candidate: 'int std::__cxx11::stoi(const std::string&, std::size_t*, int)'
 4164 |   stoi(const string& __str, size_t* __idx = 0, int __base = 10)
      |   ^~~~
/usr/include/c++/14/bits/basic_string.h:4164:22: note:   no known conversion for argument 1 from 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} to 'const std::string&' {aka 'const std::__cxx11::basic_string<char>&'}
 4164 |   stoi(const string& __str, size_t* __idx = 0, int __base = 10)
      |        ~~~~~~~~~~~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:4432:3: note: candidate: 'int std::__cxx11::stoi(const std::wstring&, std::size_t*, int)'
 4432 |   stoi(const wstring& __str, size_t* __idx = 0, int __base = 10)
      |   ^~~~
/usr/include/c++/14/bits/basic_string.h:4432:23: note:   no known conversion for argument 1 from 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} to 'const std::wstring&' {aka 'const std::__cxx11::basic_string<wchar_t>&'}
 4432 |   stoi(const wstring& __str, size_t* __idx = 0, int __base = 10)
      |        ~~~~~~~~~~~~~~~^~~~~
Language: C++

#include <bits/stdc++.h>
#define reg register
using namespace std;
char s[20];
int n, k;
int main() {
//  scanf("%s%d", s, &k);
//  char *ss;
//  int ans = strtol(s, &ss, k);
//  int ret = strlen(s);
//  printf("%d %d\n", ret, ans);
	cin >> n >> k;
	_itoa(n, s, k);
	printf("%d\n", strlen(s));
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:9: error: '_itoa' was not declared in this scope
   13 |         _itoa(n, s, k);
      |         ^~~~~
Language: C++

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

int main()
{
    int n, k;
    cin >> n >> k;
    
    char buffer[1000000];
    ltoa(n, buffer, k);
    cout << string(buffer).length() << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:5: error: 'ltoa' was not declared in this scope
   10 |     ltoa(n, buffer, k);
      |     ^~~~
Language: Java

import java.util.Scanner;
class Main{
  public static void main(String[] args){
  	
    Scanner scan = new Scanner(System.in);
    
    int n = scan.next();
    int k = scan.nextInt();
    
    String res = Integer.toString(n, k);
      
    System.out.println(res.length());
 
  }
}

Compiler output:
Main.java:7: error: incompatible types: String cannot be converted to int
    int n = scan.next();
                     ^
1 error
Language: C++

#include <iostream>
#include <string>

class Radix {
private:
  const char* s;
  int a[128];
public:
  Radix(const char* s = "0123456789ABCDEF") : s(s) {
    int i;
    for(i = 0; s[i]; ++i)
      a[(int)s[i]] = i;
  }
  std::string to(long long p, int q) {
    int i;
    if(!p)
      return "0";
    char t[64] = { };
    for(i = 62; p; --i) {
      t[i] = s[p % q];
      p /= q;
    }
    return std::string(t + i + 1);
  }
  std::string to(const std::string& t, int p, int q) {
    return to(to(t, p), q);
  }
  long long to(const std::string& t, int p) {
    int i;
    long long sm = a[(int)t[0]];
    for(i = 1; i < (int)t.length(); ++i)
      sm = sm * p + a[(int)t[i]];
    return sm;
  }
};

int main() {
    Radix r;
  	long long n;
  	int k;
  	std::cin >> n >> k;
    std::cout << stoi(r.to(n, k).length()) << std::endl;
  
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:42:18: error: 'stoi' was not declared in this scope; did you mean 'std::__cxx11::stoi'?
   42 |     std::cout << stoi(r.to(n, k).length()) << std::endl;
      |                  ^~~~
      |                  std::__cxx11::stoi
In file included 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/c++/14/bits/basic_string.h:4432:3: note: 'std::__cxx11::stoi' declared here
 4432 |   stoi(const wstring& __str, size_t* __idx = 0, int __base = 10)
      |   ^~~~
Language: C++

#include<iostream>
#include<math>
using namespace std;
int main()
  {
  int n,b;
 cin>>n>>b;
  if((n>=1 && n<=1000000000) && ( b>=2 && b<=10))
    {
    int c=1;
    while(n>0)
      {
      n=floor(n/b);
      c++;
      }
    cout<<c;
    }
  return 0;
  }

Compiler output:
a.cc:2:9: fatal error: math: No such file or directory
    2 | #include<math>
      |         ^~~~~~
compilation terminated.
Language: Java

import java.util.Scanner;
class Main{
  public static void main(String[] args){
  	
    Scanner scan = new Scanner(System.in);
    
    String n = scan.next();
    int k = scan.nextInt();
    
    String res = Integer.toString(Integer.pasrseInt(n, k));
      
    System.out.println(res.length());

  }
}

Compiler output:
Main.java:10: error: cannot find symbol
    String res = Integer.toString(Integer.pasrseInt(n, k));
                                         ^
  symbol:   method pasrseInt(String,int)
  location: class Integer
1 error
Language: C++

#include<iostream>
#include<cmath>
using namespace std;
int main()
  {
  int n,b;
 cin>>n>>b;
  if((n>=1 && n<=1000000000) && ( k>=2 && k<=10))
    {
    int c=1;
    while(n>0)
      {
      n=floor(n/b);
      c++;
      }
    cout<<c;
    }
  return 0;
  }

Compiler output:
a.cc: In function 'int main()':
a.cc:8:35: error: 'k' was not declared in this scope
    8 |   if((n>=1 && n<=1000000000) && ( k>=2 && k<=10))
      |                                   ^
Language: C

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
int main(){
char a[10000];
memset(a,'\0',10000*sizeof(char));
int n,k;
scanf("%d%d",&n,&k);

itoa(n,a,k);

printf("%d",strlen(a));
}

Compiler output:
main.c: In function 'main':
main.c:10:1: error: implicit declaration of function 'itoa' [-Wimplicit-function-declaration]
   10 | itoa(n,a,k);
      | ^~~~
Language: C

#include<stdio.h>

int b,n,d=0;


int main(){������
	scanf("%d %d",&n,&b);
	if ()
	loop:
		n=n/b;
		d++;
		if (n==0){
			printf("%d",d)
			return 0;
		}
		if (n<b){
			d++;
			printf("%d",d);
			return 0;
		}
	goto loop;
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:12: error: unknown type name '\U0000fffd\U0000fffd\U0000fffd\U0000fffd\U0000fffd\U0000fffd'
    6 | int main(){������
      |            ^~~~~~
main.c:7:15: error: expected declaration specifiers or '...' before string constant
    7 |         scanf("%d %d",&n,&b);
      |               ^~~~~~~
main.c:7:23: error: expected declaration specifiers or '...' before '&' token
    7 |         scanf("%d %d",&n,&b);
      |                       ^
main.c:7:26: error: expected declaration specifiers or '...' before '&' token
    7 |         scanf("%d %d",&n,&b);
      |                          ^
main.c:8:13: error: expected expression before ')' token
    8 |         if ()
      |             ^
main.c:13:39: error: expected ';' before 'return'
   13 |                         printf("%d",d)
      |                                       ^
      |                                       ;
   14 |                         return 0;
      |                         ~~~~~~
Language: C++

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
int main(){
char a[10000];
memset(a,'\0',10000*sizeof(char));
int n,k;
scanf("%d%d",&n,&k);

itoa(n,a,k);

printf("%d",strlen(a));
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:1: error: 'itoa' was not declared in this scope
   10 | itoa(n,a,k);
      | ^~~~
Language: Java

import java.util.Scanner;
class Main{
  public static void main(String[] args){
  	
    Scanner scan = new Scanner(System.in);
    
    String n = scan.next();
    int k = scan.nextInt();
    
    int converted = Integer.parseInt(n, k);
    String res = Integer.toString(converted);
      
    System.out.println(res.length());
    
    }   
  }
}

Compiler output:
Main.java:17: error: class, interface, enum, or record expected
}
^
1 error
Language: C++

#include<iostream>
#include<math>
using namespace std;
int main()
  {
  int n,b;
 cin>>n>>b;
  if((n>=1 && n<=1000000000) && ( k>=2 && k<=10))
    {
    int c=1;
    while(n>0)
      {
      n=floor(n/b);
      c++;
      }
    cout<<c;
    }
  return 0;
  }

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

#include<bits/stdc++.h>
using namespace std;
int main(){
	long long a;
	int n;
	cin>>a>>n;
	int m[10000]={0},o=0;
	while(a!=0){
		m[o]+=a%n;
		a/=n;
		o++;
 	}
	for(int i=o-1;i>=0;i--)
		x++;
	cout<<x<<endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:17: error: 'x' was not declared in this scope
   14 |                 x++;
      |                 ^
a.cc:15:15: error: 'x' was not declared in this scope
   15 |         cout<<x<<endl;
      |               ^
Language: Java

import java.util.*;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int K = sc.nextInt();
		int A = Integer.toString(N,K);
        	System.out.println(A.length()); 
        
    }
}

Compiler output:
Main.java:7: error: incompatible types: String cannot be converted to int
		int A = Integer.toString(N,K);
		                        ^
Main.java:8: error: int cannot be dereferenced
        	System.out.println(A.length()); 
        	                    ^
2 errors
Language: Java

import java.util.Scanner;
class Main{
  public static void main(String[] args){
  	
    Scanner scan = new Scanner(System.in);
    
    String n = scan.next();
    int k = scan.nextInt();
    
    String converted = (String)Integer.parseInt(n, k);
    
    System.out.println(converted.length());
    
  }
}

Compiler output:
Main.java:10: error: incompatible types: int cannot be converted to String
    String converted = (String)Integer.parseInt(n, k);
                                               ^
1 error
Language: Java

import java.util.Scanner;
class Main{
  public static void main(String[] args){
  	
    Scanner scan = new Scanner(System.in);
    
    String n = scan.next();
    int k = scan.nextInt();
    
    String converted = (String)Integer.parseInt(n, k);
    
    System.out.println(converted.length());
    
    }   
  }
}

Compiler output:
Main.java:16: error: class, interface, enum, or record expected
}
^
1 error
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int n,k,r;
  cin >> n;
  cin >> k;
  r=0;
  
  while (n>= std::pow(x, n)) {
   
    r++;
 
  }
  cout << r << endl ;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:23: error: 'x' was not declared in this scope
   10 |   while (n>= std::pow(x, n)) {
      |                       ^
Language: C++

#include<bits/stdc++.h>

typedef long long int ll;
using namespace std;

ll index = 0, counter = 0;
char reVal(ll num)
{
	if (num >= 0 && num <= 9)
		return (char)(num + '0');
	else
		return (char)(num - 10 + 'A');
}


void strev(char *str)
{
	int len = strlen(str);
	ll i;
	for (i = 0; i < len/2; i++)
	{
		char temp = str[i];
		str[i] = str[len-i-1];
		str[len-i-1] = temp;
	}
}


void fromDeci(char res[], ll base, ll inputNum)
{

	while (inputNum > 0)
	{
		res[index++] = reVal(inputNum % base);
		inputNum /= base;
		counter++;
		//cout<<"DD";
	}
	res[index] = '\0';
	strev(res);
}

int main()
{
	ll a,b;
	cin>>a>>b;
	ll inputNum = a, base = b;
	char res[1000];
	fromDeci(res, base, inputNum);
    cout<<counter<<"\n";
	return 0;
}


Compiler output:
a.cc:6:4: error: 'll index' redeclared as different kind of entity
    6 | ll index = 0, counter = 0;
      |    ^~~~~
In file included from /usr/include/string.h:462,
                 from /usr/include/c++/14/cstring:43,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:121,
                 from a.cc:1:
/usr/include/strings.h:50:20: note: previous declaration 'const char* index(const char*, int)'
   50 | extern const char *index (const char *__s, int __c)
      |                    ^~~~~
a.cc: In function 'void fromDeci(char*, ll, ll)':
a.cc:34:26: error: no post-increment operator for type
   34 |                 res[index++] = reVal(inputNum % base);
      |                          ^~
a.cc:39:12: error: invalid types 'char*[<unresolved overloaded function type>]' for array subscript
   39 |         res[index] = '\0';
      |            ^
Language: C++

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

int main(){
  int N, K;
  cin >> N >> K;
  string answer;
  for(int i = 0; i < N; i++){
    char i = N % K;
    if (N / K == 0){
      break;
    }
  }
  cout << answer.size() << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:10: error: redeclaration of 'char i'
    9 |     char i = N % K;
      |          ^
a.cc:8:11: note: 'int i' previously declared here
    8 |   for(int i = 0; i < N; i++){
      |           ^
Language: C++

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

int convert(int x, int n){
  int y=0, i=0, z;
  while(x > 0){
    z = x%n;
    y += z*pow(10, i);
    x = x/n;
    i++;
  }
  
  int k=0;
  while(y!=0){
    number = number / 10;
    k++;
  }
  
  return k;
}

int main() {
  int n=0, k=0;
  int result = convert(n,k);
  cout << result << endl;
}

Compiler output:
a.cc: In function 'int convert(int, int)':
a.cc:15:5: error: 'number' was not declared in this scope
   15 |     number = number / 10;
      |     ^~~~~~
Language: C++

#include<bits/stdc++.h>
using  namespace std;
#define ll long long int
#define f(i,j,k) for(ll i=j;i<k;i++)

int main()
{
11 211 2
 ll n,k,sum=0;
 cin>>n>>k;
 while(n>0)
 {
     n=n/k;
     sum++;
 }
 cout<<sum<<endl;
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: expected ';' before numeric constant
    8 | 11 211 2
      |   ^~~~
      |   ;
a.cc:10:7: error: 'n' was not declared in this scope; did you mean 'yn'?
   10 |  cin>>n>>k;
      |       ^
      |       yn
a.cc:10:10: error: 'k' was not declared in this scope
   10 |  cin>>n>>k;
      |          ^
a.cc:14:6: error: 'sum' was not declared in this scope
   14 |      sum++;
      |      ^~~
a.cc:16:8: error: 'sum' was not declared in this scope
   16 |  cout<<sum<<endl;
      |        ^~~
Language: C++

int Digits(int n, int k){
    int ans = 0;
    for (int i = 0; n>0 ; i++)
    {
        ans = ans+(n%k)*pow(10,i);
        n = n/k;
    }
    return ans;
}

int main(){
    int n,k,ans;
    cin >> n >> k;
    ans = (int)log10((double)Digits(n,k)) + 1;
    cout << ans << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int Digits(int, int)':
a.cc:5:25: error: 'pow' was not declared in this scope
    5 |         ans = ans+(n%k)*pow(10,i);
      |                         ^~~
a.cc: In function 'int main()':
a.cc:13:5: error: 'cin' was not declared in this scope
   13 |     cin >> n >> k;
      |     ^~~
a.cc:14:16: error: 'log10' was not declared in this scope
   14 |     ans = (int)log10((double)Digits(n,k)) + 1;
      |                ^~~~~
a.cc:15:5: error: 'cout' was not declared in this scope
   15 |     cout << ans << endl;
      |     ^~~~
a.cc:15:20: error: 'endl' was not declared in this scope
   15 |     cout << ans << endl;
      |                    ^~~~
Language: C++

#include<iostream>
#include <stdio.h>
#include <string.h>
typedef long long int ll;
using namespace std;

// To return char for a value. For example '2'
// is returned for 2. 'A' is returned for 10. 'B'
// for 11
ll index = 0, counter = 0;
char reVal(ll num)
{
	if (num >= 0 && num <= 9)
		return (char)(num + '0');
	else
		return (char)(num - 10 + 'A');
}

// Utility function to reverse a string
void strev(char *str)
{
	int len = strlen(str);
	ll i;
	for (i = 0; i < len/2; i++)
	{
		char temp = str[i];
		str[i] = str[len-i-1];
		str[len-i-1] = temp;
	}
}

// Function to convert a given decimal number
// to a base 'base' and
void fromDeci(char res[], ll base, ll inputNum)
{
	//int index = 0; // Initialize index of result

	// Convert input number is given base by repeatedly
	// dividing it by base and taking remainder
	while (inputNum > 0)
	{
		res[index++] = reVal(inputNum % base);
		inputNum /= base;
		counter++;
		//cout<<"DD";
	}
	res[index] = '\0';

	// Reverse the result
	strev(res);

	//return res;
}

// Driver program
int main()
{
	ll a,b;
	cin>>a>>b;
	ll inputNum = a, base = b;
	char res[1000];
	fromDeci(res, base, inputNum);
    cout<<counter<<"\n";
	return 0;
}

Compiler output:
a.cc:10:4: error: 'll index' redeclared as different kind of entity
   10 | ll index = 0, counter = 0;
      |    ^~~~~
In file included from /usr/include/string.h:462,
                 from a.cc:3:
/usr/include/strings.h:50:20: note: previous declaration 'const char* index(const char*, int)'
   50 | extern const char *index (const char *__s, int __c)
      |                    ^~~~~
a.cc: In function 'void fromDeci(char*, ll, ll)':
a.cc:42:26: error: no post-increment operator for type
   42 |                 res[index++] = reVal(inputNum % base);
      |                          ^~
a.cc:47:12: error: invalid types 'char*[<unresolved overloaded function type>]' for array subscript
   47 |         res[index] = '\0';
      |            ^
Language: C++

#include<stdio.h>
#include<math.h>
int main(void){
    long int n,k;
    scanf("%ld %ld",&n,&k);
    int i=0,a=0;
    while(pow(k,i)=<n){
        i++;
    }
    printf("%d\n",i);
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:20: error: expected primary-expression before '<' token
    7 |     while(pow(k,i)=<n){
      |                    ^
Language: C++

/*hello! guys~*/
#include<bits/stdc++.h>
using namespace std;
char str[100]; 
int main()
{
long long n,k,o;
int i;
cin>>n>>k;
_itoa(n, str, k);
for(i=0;str[i]!='\0';i++);
    printf("%d",i);
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:1: error: '_itoa' was not declared in this scope
   10 | _itoa(n, str, k);
      | ^~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
long long convert(long long x, long long n){
    long long y=0, i=0, z;
    while(x > 0){
        z = x%n;
        y += z*pow(10, i);
        x = x/n;
        i++;
    }
    return y;
}

int main(){
    long long x,n;
    cin>>x>>n;
    long long kotae;
    kotae=convert(x, n);
    string kotae2;
    kotae2=to_string(kotae);
    if(k==10){
      cout<<x<<endl;
    }else{
      cout<<kotae2.size()<<endl;
    }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:8: error: 'k' was not declared in this scope
   22 |     if(k==10){
      |        ^
Language: C++

#include <iostream>
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
using namespace std;
 int main(){
 int n,k,num_count=1;
 cin>>n>>k;
 while(n<k){
   n/=k;
   num_count++
 }
cout<<num_count<<endl;
 }

Compiler output:
a.cc: In function 'int main()':
a.cc:9:15: error: expected ';' before '}' token
    9 |    num_count++
      |               ^
      |               ;
   10 |  }
      |  ~
Language: C++

#include <iostream>
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
using namespace std;
 int main(){
 int n,k,num_count=1;
 cin>>n>>k;
 for(n<k){
   n/=k;
   num_count++
 }
cout<<num_count<<endl;
 }

Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: expected ';' before ')' token
    7 |  for(n<k){
      |         ^
      |         ;
a.cc:12:2: error: expected primary-expression before '}' token
   12 |  }
      |  ^
a.cc:11:23: error: expected ')' before '}' token
   11 | cout<<num_count<<endl;
      |                       ^
      |                       )
   12 |  }
      |  ~                     
a.cc:7:5: note: to match this '('
    7 |  for(n<k){
      |     ^
a.cc:12:2: error: expected primary-expression before '}' token
   12 |  }
      |  ^
Language: C++

#include <iostream>
using namespace std;

int main()
{ int N,K,i;
   cin >> N >>K;
    for(int i=0;N>K;i++){
        K=pow(K,i);
    }
    cout<<i;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:11: error: 'pow' was not declared in this scope
    8 |         K=pow(K,i);
      |           ^~~
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main(){
  
  int N, K;
  int count = 0;
  
  cin >> N >> K;
  
  while(N > 0){
    N /= K;
    count++
  }
  
  cout << count << endl;
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:12: error: expected ';' before '}' token
   14 |     count++
      |            ^
      |            ;
   15 |   }
      |   ~
Language: C++


using namespace std;

int main()
{
    int N, K;
    cin >> N >> K;
    int i=0;
    while(true){
        if(pow(K, i)<=N&&N<pow(K,i+1)){
            cout << i+1 << endl;
            break;
        }
      i++;
      
    }   
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:5: error: 'cin' was not declared in this scope
    7 |     cin >> N >> K;
      |     ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | 
a.cc:10:12: error: 'pow' was not declared in this scope
   10 |         if(pow(K, i)<=N&&N<pow(K,i+1)){
      |            ^~~
a.cc:11:13: error: 'cout' was not declared in this scope
   11 |             cout << i+1 << endl;
      |             ^~~~
a.cc:11:13: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:11:28: error: 'endl' was not declared in this scope
   11 |             cout << i+1 << endl;
      |                            ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 |
Language: C++

// 200219.cpp : このファイルには 'main' 関数が含まれています。プログラム実行の開始と終了がそこで行われます。
//

#include <iostream>
#include <iomanip>
#include <string>
#include <vector>
#include <algorithm>
#include <map>

using namespace std;

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

    int i = 0;
    int digit =0;
    while (1) {
        if (pow(static_cast<double>(K), static_cast<double>(i)) > N) {
            digit = i;
            break;
        }
        i++;
    }
    cout << digit << endl;
    return 0;
}

// プログラムの実行: Ctrl + F5 または [デバッグ] > [デバッグなしで開始] メニュー
// プログラムのデバッグ: F5 または [デバッグ] > [デバッグの開始] メニュー

// 作業を開始するためのヒント: 
//    1. ソリューション エクスプローラー ウィンドウを使用してファイルを追加/管理します 
//   2. チーム エクスプローラー ウィンドウを使用してソース管理に接続します
//   3. 出力ウィンドウを使用して、ビルド出力とその他のメッセージを表示します
//   4. エラー一覧ウィンドウを使用してエラーを表示します
//   5. [プロジェクト] > [新しい項目の追加] と移動して新しいコード ファイルを作成するか、[プロジェクト] > [既存の項目の追加] と移動して既存のコード ファイルをプロジェクトに追加します
//   6. 後ほどこのプロジェクトを再び開く場合、[ファイル] > [開く] > [プロジェクト] と移動して .sln ファイルを選択します


Compiler output:
a.cc: In function 'int main()':
a.cc:21:13: error: 'pow' was not declared in this scope
   21 |         if (pow(static_cast<double>(K), static_cast<double>(i)) > N) {
      |             ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int n,k,r;
  cin >> n;
  cin >> k;
  r=0;
  
  while (n>= k^r) {
   
    r=r+1
 
  }
  cout << r << endl ;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:10: error: expected ';' before '}' token
   12 |     r=r+1
      |          ^
      |          ;
   13 | 
   14 |   }
      |   ~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int n,k,r;
  cin >> n;
  cin >> k;
  r=0
  
  while (n>= k^r) {
   
    r=r+1
 
  }
  cout << r << endl ;
}
#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int n,k,r;
  cin >> n;
  cin >> k;
  r=0;
  
  while (n>= k^r) {
   
    r=r+1

  }
  cout << r << endl ;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:6: error: expected ';' before 'while'
    8 |   r=0
      |      ^
      |      ;
    9 | 
   10 |   while (n>= k^r) {
      |   ~~~~~
a.cc: At global scope:
a.cc:20:5: error: redefinition of 'int main()'
   20 | int main() {
      |     ^~~~
a.cc:4:5: note: 'int main()' previously defined here
    4 | int main() {
      |     ^~~~
a.cc: In function 'int main()':
a.cc:28:10: error: expected ';' before '}' token
   28 |     r=r+1
      |          ^
      |          ;
   29 | 
   30 |   }
      |   ~
Language: C++

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

int main() {

  int n,k;
  cin >> n >> k;
  
  int count = 1;
  int a = 1;
  
  for(int i=0; i<n; i++) {
    
    a *= k
      if(n < a)
        break;
    
    count ++;
  }
  cout << count << endl;
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:11: error: expected ';' before 'if'
   14 |     a *= k
      |           ^
      |           ;
   15 |       if(n < a)
      |       ~~
Language: C++

include<bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(n);i++)
using namespace std;
typedef long long ll;
typedef long double ld;
const double pi=acos(-1.0);
const ll mod=pow(10,9)+7;
const ll INF=pow(2,31)-1;
using str=string;
typedef pair<int,int> P;
typedef vector<int> vi;

ll gcd(ll a,ll b){
    ll v0=a,v1=b,v2=a%b;
    while(v2!=0){
        v0=v1;
        v1=v2;
        v2=v0%v1;
    }
    return v1;
}

ll lcm(ll a,ll b){
    return (a*b/gcd(a,b));
}

int main(){
    int n,k;
    int i=0;
    cin >> n >> k;
    while(n>=pow(k,i)){
        i++;
    }
    cout << i << endl;
    return 0;
}

Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include<bits/stdc++.h>
      | ^~~~~~~
a.cc:6:17: error: 'acos' was not declared in this scope
    6 | const double pi=acos(-1.0);
      |                 ^~~~
a.cc:7:14: error: 'pow' was not declared in this scope
    7 | const ll mod=pow(10,9)+7;
      |              ^~~
a.cc:8:14: error: 'pow' was not declared in this scope
    8 | const ll INF=pow(2,31)-1;
      |              ^~~
a.cc:9:11: error: 'string' does not name a type
    9 | using str=string;
      |           ^~~~~~
a.cc:10:9: error: 'pair' does not name a type
   10 | typedef pair<int,int> P;
      |         ^~~~
a.cc:11:9: error: 'vector' does not name a type
   11 | typedef vector<int> vi;
      |         ^~~~~~
a.cc: In function 'int main()':
a.cc:30:5: error: 'cin' was not declared in this scope
   30 |     cin >> n >> k;
      |     ^~~
a.cc:31:14: error: 'pow' was not declared in this scope
   31 |     while(n>=pow(k,i)){
      |              ^~~
a.cc:34:5: error: 'cout' was not declared in this scope
   34 |     cout << i << endl;
      |     ^~~~
a.cc:34:18: error: 'endl' was not declared in this scope
   34 |     cout << i << endl;
      |                  ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int n,k,r;
  cin >> n;
  cin >> k;
  r=0
  
  while (n>= k^r) {
   
    r=r+1

  }
  cout << r << endl ;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:6: error: expected ';' before 'while'
    8 |   r=0
      |      ^
      |      ;
    9 | 
   10 |   while (n>= k^r) {
      |   ~~~~~
Language: C++

#include <iostream> // cout, endl, cin
#include <string> // string, to_string, stoi
#include <vector> // vector
#include <algorithm> // min, max, swap, sort, reverse, lower_bound, upper_bound
#include <utility> // pair, make_pair
#include <tuple> // tuple, make_tuple
#include <cstdint> // int64_t, int*_t
#include <cstdio> // printf
#include <map> // map
#include <queue> // queue, priority_queue
#include <set> // set
#include <stack> // stack
#include <deque> // deque
#include <unordered_map> // unordered_map
#include <unordered_set> // unordered_set
#include <bitset> // bitset
#include <cctype> // isupper, islower, isdigit, toupper, tolower
#include <stdlib.h>
#include <stdio.h>

using namespace std;

int convert(int x, int n) {
    int y = 0, i = 0, z;
    while (x > 0) {
        z = x % n;
        y += z * pow(10, i);
        x = x / n;
        i++;
    }
    return y;
}

int main() {
    int n, k;
    cin >> n >> k;
    bool ok = true;
    int count = 1;
    int ans = 0;
    while (ok) {
        if (n / count == 0) {
            ok = false;
            break;
        }
        else {
            ans++;
        }
        count = count * k;
    }

    cout << ans << endl;
}



Compiler output:
a.cc: In function 'int convert(int, int)':
a.cc:27:18: error: 'pow' was not declared in this scope
   27 |         y += z * pow(10, i);
      |                  ^~~
Language: C++

#include <iostream>
using namespace std;
int main(){
  int k,r,n=0;
  cin >> k >> r;
  while(k){
    k=k/r;
    n++
  }
  cout << n;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:8: error: expected ';' before '}' token
    8 |     n++
      |        ^
      |        ;
    9 |   }
      |   ~
Language: C++

#include<iostream>
#include<algorithm>
using namespace std;
///递归
//ll binaryPow(ll a, ll b,ll m)
//{
//	if (b == 0) return 1;
//	else if (b % 2 == 1) return a * binaryPow(a, b - 1,m)%m;
//	else
//	{
//		ll temp = binaryPow(a, b / 2,m)%m;
//		return temp * temp%m;
//	}
//}
int main()
{
	long long n, k;
	cin >> n >> k;
	for (int i = 0;; i++)
	{
		if ((pow(k, i)) < n) continue;
		else {
			cout << i << endl; break;
		}
	}
}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:22: error: 'pow' was not declared in this scope
   21 |                 if ((pow(k, i)) < n) continue;
      |                      ^~~
Language: C++

#include <iostream>
//#include <set>
//#include <map>
//#include <iomanip>
//#include <algorithm>
//#include <numeric>
//#include <queue>
//#include <stack>
#include <math.h>
//#include <vector>
//#include <unordered_map>
//#include <string>
//typedef long long LL;
//typedef long double LD;
using namespace std;

//#define MOD 1000000007

int main() {
    double n;
    double k;
    double tmp;
    int ans;

    cin >> n >> k;
    tmp = log10(n)/log10(k);
    //if(n==1){
    //    ans = 1;
    }if(tmp-(int)tmp==0){
        ans = (int)tmp;
    }else{
        ans = (int)tmp+1;
    }

    cout << ans << endl;

    return 0;
}

Compiler output:
a.cc:29:6: error: expected unqualified-id before 'if'
   29 |     }if(tmp-(int)tmp==0){
      |      ^~
a.cc:31:6: error: expected unqualified-id before 'else'
   31 |     }else{
      |      ^~~~
a.cc:35:5: error: 'cout' does not name a type
   35 |     cout << ans << endl;
      |     ^~~~
a.cc:37:5: error: expected unqualified-id before 'return'
   37 |     return 0;
      |     ^~~~~~
a.cc:38:1: error: expected declaration before '}' token
   38 | }
      | ^
Language: C++

using namespace std;

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

   cout << ceil(log(a)/log(b)) <<endl;;



    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:4: error: 'cin' was not declared in this scope
    6 |    cin >> a >> b;
      |    ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | using namespace std;
a.cc:8:4: error: 'cout' was not declared in this scope
    8 |    cout << ceil(log(a)/log(b)) <<endl;;
      |    ^~~~
a.cc:8:4: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:8:17: error: 'log' was not declared in this scope; did you mean 'long'?
    8 |    cout << ceil(log(a)/log(b)) <<endl;;
      |                 ^~~
      |                 long
a.cc:8:12: error: 'ceil' was not declared in this scope
    8 |    cout << ceil(log(a)/log(b)) <<endl;;
      |            ^~~~
a.cc:8:34: error: 'endl' was not declared in this scope
    8 |    cout << ceil(log(a)/log(b)) <<endl;;
      |                                  ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | using namespace std;
Language: C++

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

int main() {
  int N,K;
  cin >> N >>K;
  int count = 1;
  
  int i = N
  while (i > 0) {
    count++;
    i /= K;
  }
  
  cout << count <<endl;
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:3: error: expected ',' or ';' before 'while'
   10 |   while (i > 0) {
      |   ^~~~~
Language: Java

import java.util.Scanner;
public class Main{
  public static void main(String[] args){
	Scanner sc = new Scanner(System.in);
    long N = sc.nextInt();
    int K = sc.nextInt();
    int keta = 0;
    
    for(int i = 1; ; i++){
    	if(N < Math.pow(K, i){
          keta = i;
          break;
        }
    }
    System.out.println(keta);
  }
}


Compiler output:
Main.java:10: error: ')' expected
    	if(N < Math.pow(K, i){
    	                     ^
1 error
Language: C++

#include<bits/stdc++.h>
void calc(int* arr, int n, int np, int k)
{
    for (int i = 0; i < np; i++)
    {
        arr[i] = n % k;
        n = n / k;
    }
}
int main() {
	int n, k, np = 0;
	int *arr;
	cin>>n>>k;
	
    for (int i = n; i > 0; i= i / k)
        np++;
    arr = new int[np];

    calc(arr, n, np, k);
    cout<<np;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
   13 |         cin>>n>>k;
      |         ^~~
      |         std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 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:20:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   20 |     cout<<np;
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
long long int n,k;
  cin>>n>>k;
  long long int count=0
  while(n!=0){
  count++;
    n=n/k;
  }
  
  cout<<count<<endl;
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: expected ',' or ';' before 'while'
    7 |   while(n!=0){
      |   ^~~~~
Language: C++

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

int main(){
  int n,k,a
  cin >> n >> k;
  while(n>0){
    if(n/k>k){
      n/=k;
      a++;
    }
  }
  a++;
  cout << a << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: expected initializer before 'cin'
    6 |   cin >> n >> k;
      |   ^~~
a.cc:10:7: error: 'a' was not declared in this scope
   10 |       a++;
      |       ^
a.cc:13:3: error: 'a' was not declared in this scope
   13 |   a++;
      |   ^
Language: C++

#include<stdio.h>

int main(){
  int N, K;
  scanf("%d %d",&N, &K);
  
  int x;
  x = N/K;
  for (int i=1; i<10000; i++){
    x = x/K;
    if(x==0){
      print("%d\n",i);
      break;
    }
  }
  return 0;
}
  

Compiler output:
a.cc: In function 'int main()':
a.cc:12:7: error: 'print' was not declared in this scope; did you mean 'printf'?
   12 |       print("%d\n",i);
      |       ^~~~~
      |       printf
Language: C++

#include <bits/stdc++.h>                                                                                                                 |   1|2 2919$
using namespace std;                                                                                                                     |   2|22 3051$
#define rep(i, n) for (int i = 0; i < (int)(n); ++i)                                                                                     |
                                                                                                                                         |
int main() {                                                                                                                             |
    int n, k;                                                                                                                            |
    while (cin >> n >> k) {                                                                                                              |
        int cnt = 0;                                                                                                                     |
        while (n) {                                                                                                                      |
            n /= k;                                                                                                                      |
            ++cnt;                                                                                                                       |
        }                                                                                                                                |
        cout << cnt << endl;                                                                                                             |
    }                                                                                                                                    |
} 

Compiler output:
a.cc:1:138: warning: extra tokens at end of #include directive
    1 | #include <bits/stdc++.h>                                                                                                                 |   1|2 2919$
      |                                                                                                                                          ^
a.cc:2:138: error: expected unqualified-id before '|' token
    2 | using namespace std;                                                                                                                     |   2|22 3051$
      |                                                                                                                                          ^
Language: Java

package abc156;

import java.util.Scanner;

public class B {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();
		int k = sc.nextInt();

		int count = 1;

		while(n >= Math.pow(k, count)){
			count++;
		}

		System.out.println(count);
	}

}


Compiler output:
Main.java:5: error: class B is public, should be declared in a file named B.java
public class B {
       ^
1 error
Language: C++

// 200219.cpp : このファイルには 'main' 関数が含まれています。プログラム実行の開始と終了がそこで行われます。
//

#include <iostream>
#include <iomanip>
#include <string>
#include <vector>
#include <algorithm>
#include <map>

using namespace std;

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

    int i = 0;
    int digit = 0;
    while (1) {
        if (pow(K, i) > N) {
            digit = i;
            break;
        }
        i++;
    }
    cout << digit << endl;
    return 0;
}

// プログラムの実行: Ctrl + F5 または [デバッグ] > [デバッグなしで開始] メニュー
// プログラムのデバッグ: F5 または [デバッグ] > [デバッグの開始] メニュー

// 作業を開始するためのヒント: 
//    1. ソリューション エクスプローラー ウィンドウを使用してファイルを追加/管理します 
//   2. チーム エクスプローラー ウィンドウを使用してソース管理に接続します
//   3. 出力ウィンドウを使用して、ビルド出力とその他のメッセージを表示します
//   4. エラー一覧ウィンドウを使用してエラーを表示します
//   5. [プロジェクト] > [新しい項目の追加] と移動して新しいコード ファイルを作成するか、[プロジェクト] > [既存の項目の追加] と移動して既存のコード ファイルをプロジェクトに追加します
//   6. 後ほどこのプロジェクトを再び開く場合、[ファイル] > [開く] > [プロジェクト] と移動して .sln ファイルを選択します


Compiler output:
a.cc: In function 'int main()':
a.cc:21:13: error: 'pow' was not declared in this scope
   21 |         if (pow(K, i) > N) {
      |             ^~~
Language: C++

def Base_10_to_n(X, n):
    if (int(X/n)):
        return Base_10_to_n(int(X/n), n)+str(X%n)
    return str(X%n)

def main():
    import sys
    input = sys.stdin.readline
    N,K = map(int,input().split())
    print(len(Base_10_to_n(N, K)))


if __name__ == "__main__":
    main()

Compiler output:
a.cc:1:1: error: 'def' does not name a type
    1 | def Base_10_to_n(X, n):
      | ^~~
Language: Java

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

public class A {
	public static void main(String[] args) throws IOException {
		 Scanner sc=new Scanner(System.in);
        PrintWriter pw=new PrintWriter(System.out);
  //      pw=new PrintWriter("C:\\Users\\Hp\\Desktop\\outt.txt");
        int n=sc.nextInt();
        int k=sc.nextInt();
        int cnt=0;
        while(n!=0) {
        	cnt++;
        	n/=k;
        }
        pw.println(cnt);
        pw.close();
    }

    public static class Scanner {
        StringTokenizer st;
        BufferedReader br;

        public Scanner(InputStream s) {
            br = new BufferedReader(new InputStreamReader(s));
        }

        public String next() throws IOException {
            while (st == null || !st.hasMoreTokens())
                st = new StringTokenizer(br.readLine());
            return st.nextToken();
        }

        public int nextInt() throws IOException {
            return Integer.parseInt(next());
        }

        public long nextLong() throws IOException {
            return Long.parseLong(next());
        }

        public String nextLine() throws IOException {
            return br.readLine();
        }

        public double nextDouble() throws IOException {
            String x = next();
            StringBuilder sb = new StringBuilder("0");
            double res = 0, f = 1;
            boolean dec = false, neg = false;
            int start = 0;
            if (x.charAt(0) == '-') {
                neg = true;
                start++;
            }
            for (int i = start; i < x.length(); i++)
                if (x.charAt(i) == '.') {
                    res = Long.parseLong(sb.toString());
                    sb = new StringBuilder("0");
                    dec = true;
                } else {
                    sb.append(x.charAt(i));
                    if (dec)
                        f *= 10;
                }
            res += Long.parseLong(sb.toString()) / f;
            return res * (neg ? -1 : 1);
        }

        public boolean ready() throws IOException, IOException {
            return br.ready();
        }

    }
}

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

#include "stdafx.h"
#include <bits/stdc++.h>
#define f(i,n) for(int i=0;i<n;i++)
#define P pair<int,int>
#define F first
#define S second
#define int long long
using namespace std;
signed main() {
	int a, b;
	cin >> a >> b;
	int ans = 0;
	while (a) {
		a /= b;
		ans++;
	}
	cout << ans << endl;
}


Compiler output:
a.cc:1:10: fatal error: stdafx.h: No such file or directory
    1 | #include "stdafx.h"
      |          ^~~~~~~~~~
compilation terminated.
Language: Java

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

public class Main{
    public static void main(String[] args)throws Exception{
        Scanner sc=new Scanner(System.in);
        long n=sc.nextLong()
        int k=sc.nextInt();
        System.out.println(Long.toString(n,k).length());
    }
}

Compiler output:
Main.java:7: error: ';' expected
        long n=sc.nextLong()
                            ^
1 error
Language: Java

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

public class Solution {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		String n = in.next();
		int b = in.nextInt();
		BigInteger bi = new BigInteger(n);
		String x = bi.toString(b);
		System.out.println(x.length());
	}
}

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

//
//  atcoder.cpp
//
//
///
#include <bits/stdc++.h>
#include <boost/optional.hpp>
#include <boost/range/irange.hpp>
#include <boost/range/algorithm.hpp>
#include <boost/range/numeric.hpp>
#include <boost/bimap/bimap.hpp>
#include <boost/bimap/multiset_of.hpp>
#include <boost/multi_array.hpp>
#include <boost/math/common_factor.hpp>
#include <boost/algorithm/string.hpp>
#include <stdio.h>
#include <stdlib.h>

i
#define REP(i, N) for(int i=0; i<(N); i++)
#define REC(f, ...) (void)0; const auto f = [&](const auto f, __VA_ARGS__)
using namespace std;
using namespace boost::math;

using ll = long long;
namespace bst = boost;
template<typename T> class in {
    T value;
public:
    in() { cin >> value; }
    operator const T&() const { return value; }
    operator T&() { return value; }
    in& operator=(T source) { value = source; return *this; }
};
template<> class in<string> : public string {
public:
    in() { cin >> *this; }
};
template<class T> class inseq : public T {
public:
    template<typename... Arg> inseq(Arg... arg) : T(forward<Arg>(arg)...) { for (auto&& i : *this) cin >> i; }
};
template<class T> using invec = inseq<vector<T>>;

auto solve() {
  in<int> A, B;
  char str[256];
  itoa(A, str, B);

  return strlen(str);
}

template<typename T> void plot(const T& func) { cout << func() << endl; }
template<> void plot<void()>(void(&func)()) { func(); }
template<> void plot<double()>(double(&func)()) { cout << setprecision(9) << func() << endl; }

int main() {
  plot(solve);

  return 0;
}


Compiler output:
a.cc:7:10: fatal error: boost/optional.hpp: No such file or directory
    7 | #include <boost/optional.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<stdio.h>
#include<math.h>
int main()
{
  int N, K;
  scanf("%d %d", &N, &K);
  count = 1;
  while(pow(K, count-1)<N)
    count++;
  printf("%d", count);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: 'count' was not declared in this scope
    7 |   count = 1;
      |   ^~~~~
Language: C++

#define rep(i,n) for (int i=0;i<(n);i++)
#define adrep(i,s,n) for (int i=(s);i<(n);i++)
using namespace std;
typedef long long ll;

int main(){

  int a=0;
  int b=0;

  cin>>a>>b;
  
  int ans=0;

  while(pow(b,ans)<=a)ans++;
  cout<<ans;
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:3: error: 'cin' was not declared in this scope
   11 |   cin>>a>>b;
      |   ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | #define rep(i,n) for (int i=0;i<(n);i++)
a.cc:15:9: error: 'pow' was not declared in this scope
   15 |   while(pow(b,ans)<=a)ans++;
      |         ^~~
a.cc:16:3: error: 'cout' was not declared in this scope
   16 |   cout<<ans;
      |   ^~~~
a.cc:16:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'