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

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

long long N;

int main() {
  ios_base::sync_with_stdio(0);
  cin >> N;
  long long ans = 1e18;
  for(int i = 1; i * i <= N; i++) {
    if(N % i == 0) {
      ans = min(ans, max(log10(i), log10(N / i)));
    }
  }
  cout << ans << "\n";
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:16: error: no matching function for call to 'min(long long int&, const double&)'
   12 |       ans = min(ans, max(log10(i), log10(N / i)));
      |             ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:12:16: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'double')
   12 |       ans = min(ans, max(log10(i), log10(N / i)));
      |             ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:12:16: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   12 |       ans = min(ans, max(log10(i), log10(N / i)));
      |             ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Language: Java

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		Long N = Long.parseLong(sc.next());
		sc.close();

		int answer = Integer.MAX_VALUE;
		for(int i = 1; i <=  Math.sqrt((double)N); i++) {
			if(N % i == 0) {
				long A = i;
				long B = N / i;
				int tmp = Math.max(String.valueOf(A).length(), String.valueOf(B).length());
				if(tmp < answer) answer = tmp;
			}else {
				continue;
			}
		}
		System.out.println(answer);

	}

Compiler output:
Main.java:23: error: reached end of file while parsing
	}
	 ^
1 error
Language: C

#include<stdio.h>

int keta(int a){
  
  int count = 0;
  int temp = a;
  while(temp != 0){
    count ++;
    temp /= 10;
  }
  return count;
}

int main(void){
  int n;
  scanf("%d",&n);
  
  int k = (int)sqrt(n,2);
  int ans;
  
  
for(int i = k + 1;i > 0;i --){
   if(n%i == 0){
     int temp = n%i;
     ans = keta(temp);
   }
}
  
  printf("%d\n",ans);
  
  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:18:16: error: implicit declaration of function 'sqrt' [-Wimplicit-function-declaration]
   18 |   int k = (int)sqrt(n,2);
      |                ^~~~
main.c:2:1: note: include '<math.h>' or provide a declaration of 'sqrt'
    1 | #include<stdio.h>
  +++ |+#include <math.h>
    2 | 
main.c:18:16: warning: incompatible implicit declaration of built-in function 'sqrt' [-Wbuiltin-declaration-mismatch]
   18 |   int k = (int)sqrt(n,2);
      |                ^~~~
main.c:18:16: note: include '<math.h>' or provide a declaration of 'sqrt'
main.c:18:16: error: too many arguments to function 'sqrt'
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
long long solve(long long k){
  int ans=0;
  while(k){
    ans++;
    k/=10;
  }
  return ans;
}
int main(){
  long long n;
  cin >> n;
  int ans=10;
  rep(i,100000){
    long long u=i+1;
    if(n%u==0){
      ans=min(ans,max(solve(u),solve(n/u)));
    }
  }
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:14: error: no matching function for call to 'min(int&, const long long int&)'
   19 |       ans=min(ans,max(solve(u),solve(n/u)));
      |           ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:19:14: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   19 |       ans=min(ans,max(solve(u),solve(n/u)));
      |           ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:19:14: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   19 |       ans=min(ans,max(solve(u),solve(n/u)));
      |           ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Language: C

/*自分の解答、TLE
#include <iostream>
#include <string>
#include <cmath> //これはlogを使うときに必要
#include <vector> //これは配列(vector)を使うときに必要
#include <math.h> //べき乗を使うときに必要
using namespace std;

long long digitbigger(long long a, long long b) {
  long long d;
  d = log10(b) + 1;
  return d;
}

int main() {
  long long n;
  cin >> n;
  long long ans = digitbigger(1, n);
  for(int i = 1; i * i <= n; i++) {
    if(n % i == 0) {
      ans = min(ans, digitbigger(i, n/i));
    }
  }
  cout << ans << endl;
  return 0;
}
*/

//正答例
#include <bits/stdc++.h>
using ll=long long;

int cnt_digits(ll N) {
  int digits = 0;

    while(N > 0) {
      N /= 10;
      digits++;
    }
    return digits;
}

int main(void){
    ll N;
cin >> N;
int ans = cnt_digits(N); // 1*N=N max(cnt_digits(1),cnt_digits(N))=cnt_digits(N)
    for(ll A = 1LL; A * A <= N; ++A){
        if(N % A != 0) continue;
        const ll B = N / A;

        const int cur = max(cnt_digits(A), cnt_digits(B));

        if(ans > cur){
            ans = cur;
          }
      }
    cout << ans << endl;
    return 0;
}


Compiler output:
main.c:30:10: fatal error: bits/stdc++.h: No such file or directory
   30 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

/*自分の解答、TLE
#include <iostream>
#include <string>
#include <cmath> //これはlogを使うときに必要
#include <vector> //これは配列(vector)を使うときに必要
#include <math.h> //べき乗を使うときに必要
using namespace std;

long long digitbigger(long long a, long long b) {
  long long d;
  d = log10(b) + 1;
  return d;
}

int main() {
  long long n;
  cin >> n;
  long long ans = digitbigger(1, n);
  for(int i = 1; i * i <= n; i++) {
    if(n % i == 0) {
      ans = min(ans, digitbigger(i, n/i));
    }
  }
  cout << ans << endl;
  return 0;
}
*/

//正答例
#include bits/stdc++.h
using ll=long long;

int cnt_digits(ll N) {
  int digits = 0;

    while(N > 0) {
      N /= 10;
      digits++;
    }
    return digits;
}

int main(void){
    ll N;
cin >> N;
int ans = cnt_digits(N); // 1*N=N max(cnt_digits(1),cnt_digits(N))=cnt_digits(N)
    for(ll A = 1LL; A * A <= N; ++A){
        if(N % A != 0) continue;
        const ll B = N / A;

        const int cur=max(cnt_digits(A),cnt_digits(B));

        if(ans>cur){
            ans=cur;
          }
      }
    cout << ans << endl;
    return 0;
}


Compiler output:
a.cc:30:10: error: #include expects "FILENAME" or <FILENAME>
   30 | #include bits/stdc++.h
      |          ^~~~
a.cc: In function 'int main()':
a.cc:45:1: error: 'cin' was not declared in this scope
   45 | cin >> N;
      | ^~~
a.cc:51:23: error: 'max' was not declared in this scope
   51 |         const int cur=max(cnt_digits(A),cnt_digits(B));
      |                       ^~~
a.cc:57:5: error: 'cout' was not declared in this scope
   57 |     cout << ans << endl;
      |     ^~~~
a.cc:57:20: error: 'endl' was not declared in this scope
   57 |     cout << ans << endl;
      |                    ^~~~
Language: C++

/*自分の解答、TLE
#include <iostream>
#include <string>
#include <cmath> //これはlogを使うときに必要
#include <vector> //これは配列(vector)を使うときに必要
#include <math.h> //べき乗を使うときに必要
using namespace std;

long long digitbigger(long long a, long long b) {
  long long d;
  d = log10(b) + 1;
  return d;
}

int main() {
  long long n;
  cin >> n;
  long long ans = digitbigger(1, n);
  for(int i = 1; i * i <= n; i++) {
    if(n % i == 0) {
      ans = min(ans, digitbigger(i, n/i));
    }
  }
  cout << ans << endl;
  return 0;
}
*/

//正答例
using ll=long long;

int cnt_digits(ll N) {
  int digits = 0;

    while(N > 0) {
      N /= 10;
      digits++;
    }
    return digits;
}

int main(void){
    ll N;
cin >> N;
int ans = cnt_digits(N); // 1*N=N max(cnt_digits(1),cnt_digits(N))=cnt_digits(N)
    for(ll A = 1LL; A * A <= N; ++A){
        if(N % A != 0) continue;
        const ll B = N / A;

        const int cur=max(cnt_digits(A),cnt_digits(B));

        if(ans>cur){
            ans=cur;
          }
      }
    cout << ans << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:44:1: error: 'cin' was not declared in this scope
   44 | cin >> N;
      | ^~~
a.cc:50:23: error: 'max' was not declared in this scope
   50 |         const int cur=max(cnt_digits(A),cnt_digits(B));
      |                       ^~~
a.cc:56:5: error: 'cout' was not declared in this scope
   56 |     cout << ans << endl;
      |     ^~~~
a.cc:56:20: error: 'endl' was not declared in this scope
   56 |     cout << ans << endl;
      |                    ^~~~
Language: C++

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

int main(){
  int N;
  cin >> N;
  int F;
  for(int i = 0; i < 10000000000; i++){
    //for(int j = i; j < 10000000000; j++){
      if(i /** j*/ == N){
        F = to_string(j).length();
        goto BREAK;
      //}
    }
  }
  BREAK:
  cout << F << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:23: error: 'j' was not declared in this scope
   11 |         F = to_string(j).length();
      |                       ^
Language: C++

#include<bits/stdc++.h>
#include<cmath>
using namespace std;
int main(){
int64_t N;
cin >> N ;
int_64t ans = 11;

for(int64_t i = 1; i*i<=N; i++){
  if(N %i == 0){
    int64_t B = N/i;
    int_64t loga = log10(i)+1; 
    int_64t logb = log10(B)+1;
  }
  ans = min(ans,max(loga,logb));
  }
  

cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:1: error: 'int_64t' was not declared in this scope; did you mean 'int64_t'?
    7 | int_64t ans = 11;
      | ^~~~~~~
      | int64_t
a.cc:12:12: error: expected ';' before 'loga'
   12 |     int_64t loga = log10(i)+1;
      |            ^~~~~
      |            ;
a.cc:13:12: error: expected ';' before 'logb'
   13 |     int_64t logb = log10(B)+1;
      |            ^~~~~
      |            ;
a.cc:15:3: error: 'ans' was not declared in this scope; did you mean 'abs'?
   15 |   ans = min(ans,max(loga,logb));
      |   ^~~
      |   abs
a.cc:15:21: error: 'loga' was not declared in this scope; did you mean 'logl'?
   15 |   ans = min(ans,max(loga,logb));
      |                     ^~~~
      |                     logl
a.cc:19:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   19 | cout << ans << endl;
      |         ^~~
      |         abs
Language: C++

#include<bits/stdc++.h>
#define rep(i, n) for(int i; i < n; i++)

using namespace std;
 //桁数を求める
int f(int N){
  int counter = 0;
  while(N>0){
    N = N - (N%10);
    N = N/10;
    counter++;
  }
  return counter;
}
  
 
int main(){
  int N;
  cin >> N;
  
 vector<int> F;
  double D = pow(N, 1/2)
  for(int i = 1; i <= D; i++){
    if(N%i==0){
      F.push_back(f(i)*f(N/i));
    }
  }
  
  
  int ans = *min_element(F.begin(), F.end());
 
  cout << ans << endl;
}
      
  



Compiler output:
a.cc: In function 'int main()':
a.cc:23:3: error: expected ',' or ';' before 'for'
   23 |   for(int i = 1; i <= D; i++){
      |   ^~~
a.cc:23:18: error: 'i' was not declared in this scope
   23 |   for(int i = 1; i <= D; i++){
      |                  ^
Language: C++

#include<bits/stdc++.h>
#define rep(i, n) for(int i; i < n; i++)

using namespace std;
 //桁数を求める
int f(int N){
  int counter = 0;
  while(N>0){
    N = N - (N%10);
    N = N/10;
    counter++;
  }
}
  
 
int main(){
  int N;
  cin >> N;
  
  vector<int> F;
  rep(i,  pow(N, 1/2)){
    if(N%i==0){
      F.push_back(f(i)*f(N));
    }
  }
  int ans = min_element(F.begin(), F.end());

  cout << ans << endl;
}
      
  

Compiler output:
a.cc: In function 'int f(int)':
a.cc:13:1: warning: no return statement in function returning non-void [-Wreturn-type]
   13 | }
      | ^
a.cc: In function 'int main()':
a.cc:26:24: error: cannot convert '__gnu_cxx::__normal_iterator<int*, std::vector<int> >' to 'int' in initialization
   26 |   int ans = min_element(F.begin(), F.end());
      |             ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
      |                        |
      |                        __gnu_cxx::__normal_iterator<int*, std::vector<int> >
Language: C++

#include<bits/stdc++.h>
#define rep(i, n) for(int i; i < n; i++)

using namespace std;
 //桁数を求める
int f(int N){
  int counter = 0;
  while(N>0){
    N = N - (N%10);
    N = N/10;
    counter++;
  }
}
  
 
int main(){
  int N;
  cin >> N;
  
  vector<int> F;
  rep(i,  pow(N, 1/2)){
    if(N%i==0){
      F.push_back(f(i)*f(N));
    }
  }
  int ans = min_element(F.begin(), F.end()) 

  cout << ans << endl;
}
      
  

Compiler output:
a.cc: In function 'int f(int)':
a.cc:13:1: warning: no return statement in function returning non-void [-Wreturn-type]
   13 | }
      | ^
a.cc: In function 'int main()':
a.cc:26:24: error: cannot convert '__gnu_cxx::__normal_iterator<int*, std::vector<int> >' to 'int' in initialization
   26 |   int ans = min_element(F.begin(), F.end())
      |             ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
      |                        |
      |                        __gnu_cxx::__normal_iterator<int*, std::vector<int> >
Language: C++

#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
int main() {
	int n;
	int count=0;
	int min=11;
	int max_num;
	cin >> n;
	int sq = sqrt(n);
	for (int i = sq; i >0; i--) {
		if (n % i == 0) {
			max_num = max(n / i, i);
			while (max_num>=1) {
				count++;
				max_num=max_num / 10;
			}
				min = count;
				break;
		}
		count = 0;
	}
	cout << min;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:18: error: 'sqrt' was not declared in this scope; did you mean 'sq'?
   11 |         int sq = sqrt(n);
      |                  ^~~~
      |                  sq
Language: C++

#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
int main() {
	int n;
	int count=0;
	int min=11;
	int max_num;
	cin >> n;
	for (int i = sqrt(n); i >0; i--) {
		if (n % i == 0) {
			max_num = max(n / i, i);
			while (max_num>=1) {
				count++;
				max_num=max_num / 10;
			}
				min = count;
				break;
		}
		count = 0;
	}
	cout << min;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:22: error: 'sqrt' was not declared in this scope
   11 |         for (int i = sqrt(n); i >0; i--) {
      |                      ^~~~
Language: C++

#include <iostream>
using namespace std;

int find_numdigits(int n) {
  int digits = 0;
  while (n != 0) {
    n /= 10;
    digits++;
  }
  return digits;
}

int main() {
  int N;
  cin >> N;
  int a, b;
  int min = 10000000000;
  for (int i = 1; i < N; i++) {
    for (int j = 1; j < N; j++) {
      if (i * j == N) {
        int i_digits = find_numdigits(i);
        int j_digits = find_numdigits(j);
        min = min(min, i_digits + j_digits);
        break;
      }
    }
  }
  cout << min << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:13: warning: overflow in conversion from 'long int' to 'int' changes value from '10000000000' to '1410065408' [-Woverflow]
   17 |   int min = 10000000000;
      |             ^~~~~~~~~~~
a.cc:23:18: error: 'min' cannot be used as a function
   23 |         min = min(min, i_digits + j_digits);
      |               ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
Language: C++

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

int f(int a, int b){
  string x=to_string(a);
  string y=to_string(b);
  return x.size()>y.size() ? x.size() : y.size();
}
int main(){
  long n;
  cin>>n;
  int ans=11;
  for(int i=1;i<=sqrt(n);i++){
    if(n%i==0){
    	int tmp=f(i,n/i);
    	ans=min(ans,tmp);
    }
  }
  cout<<ans<<endl;
}

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

#include <bits/stdc++.h>
using namespace std;
#define ll long long 
#define endl "\n"
#define pb push_back
#define f(i,n) for(i=0;i<n;i++)
#define F(i,a,b) for(i=a;a<=b;i++)
#define arr(a,n) for( i=0;i<n;i++)cin>>a[i];
#define fi first
#define se second
#define mp make_pair
#define mod 1000000007
#define YES cout<<"YES"<<endl;
#define Yes cout<<"Yes"<<endl;
#define NO cout<<"NO"<<endl;
#define No cout<<"No"<<endl;
#define yes cout<<"yes"<<endl;
#define no cout<<"no"<<endl;
#define vi vector<ll>
#define ed end()
#define bg begin()
#define sz size()
#define ln length()
#define s() sort(a,a+n);
#define sr() sort(a,a+n,greater<ll>());
#define v()  sort(v.begin(),v.end());
#define vr() sort(v.begin(),v.end(),greater<ll>());
#define mod 1000000007
#define fast() ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
ll gcd(ll a, ll b){if(!b)return a;return gcd(b, a % b);}
ll power(ll x,ll y,ll p){ll res=1;x%=p;while(y>0){if(y&1)res=(res*x)%p;y=y>>1;x=(x*x)%p;}return res;}
int digit(ll a,ll b)
{
  ll c=0,d=0;
  while(a>0)
  {
    c+=1;
    a/=10;
  }
  while(b>0)
  {
    d+=1;
    b/=10;
  }
  if(c>d)
    return c;
  else
    return d;
}
int main() {
    */#ifndef ONLINE_JUDGE
        // for getting input from input.txt
        freopen("input.txt", "r", stdin);
        // for writing output to output.txt
        freopen("output.txt", "w", stdout);
    #endif*/
        /* 
        Ofcourse it's Hard.
        It's supposed to be Hard.
        If it's easy everyone would do it.
        HARD IS WHAT MAKES IT GREAT

        YESTERDAY U SAID TOMORROW

        SLOWLY BECOMING THE PERSON I 
        SHOULD HAVE BEEN A LONG TIME AGO

        SAME TASK CAN'T BE FOUND DIFFICULT TWICE

        BTBHWSITW

        SPRH TU KAB P

        CP IS ALL ABOUT THINKING 
        YOU HAVE MUCH MORE POTENTIAL THAN U THINK

        AJIT SHIDDAT 10

        UR DAILY ROUTINE 


        */

fast();
//ll t;cin>>t;while(t--)
{
    ll n;
    int mn=INT_MAX;
    cin>>n;
    vi v;
    for(int i=1;i<=sqrt(n);i++)
    {
      if(n%i==0)
      {
        
          v.pb(n/i);
          v.pb(i);
        
      }
    }
    v()
     
  for(int i=0;i<v.size();i++)
  {
    for(int j=i+1;j<v.size();j++)
    {  
      if(v[i]*v[j]==n)
      {
        int temp=digit(v[i],v[j]);
         mn=min(temp,mn);
    }
  }
  }
  cout<<mn<<endl;


}
return 0;
}

Compiler output:
a.cc:51:7: error: stray '#' in program
   51 |     */#ifndef ONLINE_JUDGE
      |       ^
a.cc:56:6: error: #endif without #if
   56 |     #endif*/
      |      ^~~~~
a.cc: In function 'int main()':
a.cc:51:6: error: expected primary-expression before '/' token
   51 |     */#ifndef ONLINE_JUDGE
      |      ^
a.cc:51:8: error: 'ifndef' was not declared in this scope; did you mean 'index'?
   51 |     */#ifndef ONLINE_JUDGE
      |        ^~~~~~
      |        index
Language: Java

ckage ABC057;
import java.util.*;
import java.math.*;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		long n = sc.nextLong();
		long a = 1;	
		
		for(int i=1; i<=Math.sqrt(n); i++) {
			if(n%i == 0) {
				a = n/i;
			}
		}
		
		
		
		System.out.println((int)Math.log10(a)+1);
		
		
		

	}

}


Compiler output:
Main.java:1: error: unnamed classes are a preview feature and are disabled by default.
ckage ABC057;
^
  (use --enable-preview to enable unnamed classes)
Main.java:2: error: class, interface, enum, or record expected
import java.util.*;
^
Main.java:3: error: class, interface, enum, or record expected
import java.math.*;
^
3 errors
Language: Java

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

public class DigitInMultipication {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
		int a = 1;	
		
		for(int i=1; i<=Math.sqrt(n); i++) {
			if(n%i == 0) {
				a = n/i;
			}
		}
		
		
		
		System.out.println((int)Math.log10(a));
		
		
		

	}

}


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

import java.util.*;

public class Math {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
		int a = 1;	
		
		for(int i=1; i<=Math.sqrt(n); i++) {
			if(n%i == 0) {
				a = n/i;
			}
		}
		
		
		
		System.out.println((int)Math.log10(a));
		
		
		

	}

}


Compiler output:
Main.java:3: error: class Math is public, should be declared in a file named Math.java
public class Math {
       ^
Main.java:11: error: cannot find symbol
		for(int i=1; i<=Math.sqrt(n); i++) {
		                    ^
  symbol:   method sqrt(int)
  location: class Math
Main.java:19: error: cannot find symbol
		System.out.println((int)Math.log10(a));
		                            ^
  symbol:   method log10(int)
  location: class Math
3 errors
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
int main(){
  int N;
  cin >> N;
  double a=sqrt(N);
  int b;
  int ans=10000000;
  for(int i=0;i<a;i++){
    if(N%i==0){
      b=N/i;
      int j;
      double c=exp10(j);
      while(b%c==0){
        j++;
      }
      ans=min(j,ans);
    }
  }
  cout << ans+1 << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:14: error: invalid operands of types 'int' and 'double' to binary 'operator%'
   15 |       while(b%c==0){
      |             ~^~
      |             | |
      |             | double
      |             int
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
int main(){
  int N;
  cin >> N;
  double a=sqrt(N);
  int b;
  int ans=10000000000;
  for(int i=0;i<a;i++){
    if(N%i==0){
      b=N/i;
      double c=exp10(j);
      while(b%c==0){
        j++;
      }
      ans=min(j,ans);
    }
  }
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:11: warning: overflow in conversion from 'long int' to 'int' changes value from '10000000000' to '1410065408' [-Woverflow]
    9 |   int ans=10000000000;
      |           ^~~~~~~~~~~
a.cc:13:22: error: 'j' was not declared in this scope
   13 |       double c=exp10(j);
      |                      ^
a.cc:14:14: error: invalid operands of types 'int' and 'double' to binary 'operator%'
   14 |       while(b%c==0){
      |             ~^~
      |             | |
      |             | double
      |             int
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
int main(){
  int N;
  cin >> N;
  double a=sqrt(N);
  int b;
  int ans=100000000000;
  for(int i=0;i<a;i++){
    if(N%i==0){
      b=N/i;
      int c;
      for(int j=0; j;j++){
        if(b%exp10(j)==0){c++;}
      }
      ans=min(c,ans);
    }
  }
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:11: warning: overflow in conversion from 'long int' to 'int' changes value from '100000000000' to '1215752192' [-Woverflow]
    9 |   int ans=100000000000;
      |           ^~~~~~~~~~~~
a.cc:15:13: error: invalid operands of types 'int' and 'double' to binary 'operator%'
   15 |         if(b%exp10(j)==0){c++;}
      |            ~^~~~~~~~~
      |            |      |
      |            int    double
Language: C++

#include <numeric>
#include <bits/stdc++.h>
using namespace std;
int main() {
    long long N;
    cin >> N;
    int counter=0;
    queue<long long> vec;
    for(long long i=1;i*i<N;i++){
    if(N%i==0){
     vec.push(i);}}
    long long a;
    for(int i=0;i<
    a=vec.front(#include <numeric>
#include <bits/stdc++.h>
using namespace std;
int main() {
    long long N;
    cin >> N;
    int counter=0;
    queue<long long> vec;
    for(long long i=1;i*i<N;i++){
    if(N%i==0){
     vec.push(i);}}
    long long a;
    for(int i=0;i<vec.size()/2+1;i++){
    a=vec.front();
    while(a>0){
    a=a/10;
    counter++;}
    cout<<counter<<endl;}


Compiler output:
a.cc:14:17: error: stray '#' in program
   14 |     a=vec.front(#include <numeric>
      |                 ^
a.cc: In function 'int main()':
a.cc:14:18: error: 'include' was not declared in this scope
   14 |     a=vec.front(#include <numeric>
      |                  ^~~~~~~
a.cc:14:27: error: 'numeric' was not declared in this scope
   14 |     a=vec.front(#include <numeric>
      |                           ^~~~~~~
a.cc:16:1: error: expected primary-expression before 'using'
   16 | using namespace std;
      | ^~~~~
a.cc:17:1: error: expected primary-expression before 'int'
   17 | int main() {
      | ^~~
a.cc:16:21: error: expected ')' before 'int'
   16 | using namespace std;
      |                     ^
      |                     )
   17 | int main() {
      | ~~~                  
a.cc:13:8: note: to match this '('
   13 |     for(int i=0;i<
      |        ^
a.cc:17:9: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
   17 | int main() {
      |         ^~
a.cc:17:9: note: remove parentheses to default-initialize a variable
   17 | int main() {
      |         ^~
      |         --
a.cc:17:9: note: or replace parentheses with braces to value-initialize a variable
a.cc:17:12: error: a function-definition is not allowed here before '{' token
   17 | int main() {
      |            ^
a.cc:31:26: error: expected '}' at end of input
   31 |     cout<<counter<<endl;}
      |                          ^
a.cc:4:12: note: to match this '{'
    4 | int main() {
      |            ^
Language: C++

#include <numeric>
#include <bits/stdc++.h>
using namespace std;
int main() {
    int N;
    cin >> N;
    int counter=0;
    queue<int> vec;
    for(int i=1;i*i<N;i++){
    if(N%i==0){
     vec.push(i);}}
    int a,b;
    b=vec.size();
    b=b/2;
    b=b+1;
    a=vec.front(b);
    while(a>0){
    a=a/10;
    counter++;}
    cout<<counter<<endl;}


Compiler output:
a.cc: In function 'int main()':
a.cc:16:16: error: no matching function for call to 'std::queue<int>::front(int&)'
   16 |     a=vec.front(b);
      |       ~~~~~~~~~^~~
In file included from /usr/include/c++/14/queue:66,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:157,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_queue.h:231:7: note: candidate: 'std::queue<_Tp, _Sequence>::reference std::queue<_Tp, _Sequence>::front() [with _Tp = int; _Sequence = std::deque<int, std::allocator<int> >; reference = int&]'
  231 |       front()
      |       ^~~~~
/usr/include/c++/14/bits/stl_queue.h:231:7: note:   candidate expects 0 arguments, 1 provided
/usr/include/c++/14/bits/stl_queue.h:243:7: note: candidate: 'std::queue<_Tp, _Sequence>::const_reference std::queue<_Tp, _Sequence>::front() const [with _Tp = int; _Sequence = std::deque<int, std::allocator<int> >; const_reference = const int&]'
  243 |       front() const
      |       ^~~~~
/usr/include/c++/14/bits/stl_queue.h:243:7: note:   candidate expects 0 arguments, 1 provided
Language: C++

#include <numeric>
#include <bits/stdc++.h>
using namespace std;
int main() {
    long long N;
    cin >> N;
    int counter=0;
    queue<int> vec;
    for(long long i=1;i*i<N;i++){
    if(N%i==0){
     vec.push(i);}}
    int a,b;
    b=vec.size();
    b=b/2;
    b=b+1;
    a=vec.front(b);
    while(a>0){
    a=a/10;
    counter++;}
    cout<<counter<<endl;}


Compiler output:
a.cc: In function 'int main()':
a.cc:16:16: error: no matching function for call to 'std::queue<int>::front(int&)'
   16 |     a=vec.front(b);
      |       ~~~~~~~~~^~~
In file included from /usr/include/c++/14/queue:66,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:157,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_queue.h:231:7: note: candidate: 'std::queue<_Tp, _Sequence>::reference std::queue<_Tp, _Sequence>::front() [with _Tp = int; _Sequence = std::deque<int, std::allocator<int> >; reference = int&]'
  231 |       front()
      |       ^~~~~
/usr/include/c++/14/bits/stl_queue.h:231:7: note:   candidate expects 0 arguments, 1 provided
/usr/include/c++/14/bits/stl_queue.h:243:7: note: candidate: 'std::queue<_Tp, _Sequence>::const_reference std::queue<_Tp, _Sequence>::front() const [with _Tp = int; _Sequence = std::deque<int, std::allocator<int> >; const_reference = const int&]'
  243 |       front() const
      |       ^~~~~
/usr/include/c++/14/bits/stl_queue.h:243:7: note:   candidate expects 0 arguments, 1 provided
Language: C++

#include <numeric>
#include <bits/stdc++.h>
using namespace std;
int main() {
    long long N;
    cin >> N;
    int counter=0;
    queue<int> vec;
    for(long long i=1;i*i<N;i++){
    if(N%i==0){
     vec.push(i);}}
    int a,b;
    b=vec.size();
    b=b/2;
    a=vec.front(b+1);
    while(a>0){
    a=a/10;
    counter++;}
    cout<<counter<<endl;}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:16: error: no matching function for call to 'std::queue<int>::front(int)'
   15 |     a=vec.front(b+1);
      |       ~~~~~~~~~^~~~~
In file included from /usr/include/c++/14/queue:66,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:157,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_queue.h:231:7: note: candidate: 'std::queue<_Tp, _Sequence>::reference std::queue<_Tp, _Sequence>::front() [with _Tp = int; _Sequence = std::deque<int, std::allocator<int> >; reference = int&]'
  231 |       front()
      |       ^~~~~
/usr/include/c++/14/bits/stl_queue.h:231:7: note:   candidate expects 0 arguments, 1 provided
/usr/include/c++/14/bits/stl_queue.h:243:7: note: candidate: 'std::queue<_Tp, _Sequence>::const_reference std::queue<_Tp, _Sequence>::front() const [with _Tp = int; _Sequence = std::deque<int, std::allocator<int> >; const_reference = const int&]'
  243 |       front() const
      |       ^~~~~
/usr/include/c++/14/bits/stl_queue.h:243:7: note:   candidate expects 0 arguments, 1 provided
Language: C++

#include <numeric>
#include <bits/stdc++.h>
using namespace std;
int main() {
    long long N;
    cin >> N;
    int counter=0;
    queue<int> vec;
    for(long long i=1;i*i<N;i++){
    if(N%i==0){
     vec.push(i);}}
    int a;
    a=vec.front(vec.size()/2+1);
    while(a>0){
    a=a/10;
    counter++;}
    cout<<counter<<endl;}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:16: error: no matching function for call to 'std::queue<int>::front(std::queue<int>::size_type)'
   13 |     a=vec.front(vec.size()/2+1);
      |       ~~~~~~~~~^~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/queue:66,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:157,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_queue.h:231:7: note: candidate: 'std::queue<_Tp, _Sequence>::reference std::queue<_Tp, _Sequence>::front() [with _Tp = int; _Sequence = std::deque<int, std::allocator<int> >; reference = int&]'
  231 |       front()
      |       ^~~~~
/usr/include/c++/14/bits/stl_queue.h:231:7: note:   candidate expects 0 arguments, 1 provided
/usr/include/c++/14/bits/stl_queue.h:243:7: note: candidate: 'std::queue<_Tp, _Sequence>::const_reference std::queue<_Tp, _Sequence>::front() const [with _Tp = int; _Sequence = std::deque<int, std::allocator<int> >; const_reference = const int&]'
  243 |       front() const
      |       ^~~~~
/usr/include/c++/14/bits/stl_queue.h:243:7: note:   candidate expects 0 arguments, 1 provided
Language: C++

#include <numeric>
#include <bits/stdc++.h>
using namespace std;
int main() {
    long long N;
    cin >> N;
    int counter=0;
    queue<long long> vec;
    for(long long i=1;i*i<N;i++){
    if(N%i==0){
     vec.push(i);}}
    long long a;
    a=vec.front(vec.size()/2+1);
    while(a>0){
    a=a/10;
    counter++;}
    cout<<counter<<endl;}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:16: error: no matching function for call to 'std::queue<long long int>::front(std::queue<long long int>::size_type)'
   13 |     a=vec.front(vec.size()/2+1);
      |       ~~~~~~~~~^~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/queue:66,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:157,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_queue.h:231:7: note: candidate: 'std::queue<_Tp, _Sequence>::reference std::queue<_Tp, _Sequence>::front() [with _Tp = long long int; _Sequence = std::deque<long long int, std::allocator<long long int> >; reference = long long int&]'
  231 |       front()
      |       ^~~~~
/usr/include/c++/14/bits/stl_queue.h:231:7: note:   candidate expects 0 arguments, 1 provided
/usr/include/c++/14/bits/stl_queue.h:243:7: note: candidate: 'std::queue<_Tp, _Sequence>::const_reference std::queue<_Tp, _Sequence>::front() const [with _Tp = long long int; _Sequence = std::deque<long long int, std::allocator<long long int> >; const_reference = const long long int&]'
  243 |       front() const
      |       ^~~~~
/usr/include/c++/14/bits/stl_queue.h:243:7: note:   candidate expects 0 arguments, 1 provided
Language: C++

#include <iostream>
using namespace std;
int main() {
    long long N;
    cin >> N;
    int counter=0;
    queue<long long> vec;
    for(long long i=1;i*i<N;i++){
    if(N%i==0){
     vec.push(i);}}
    long long a;
    a=vec.front(vec.size()/2+1);
    while(a>0){
    a=a/10;
    counter++;}
    cout<<counter<<endl;}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:5: error: 'queue' was not declared in this scope
    7 |     queue<long long> vec;
      |     ^~~~~
a.cc:2:1: note: 'std::queue' is defined in header '<queue>'; this is probably fixable by adding '#include <queue>'
    1 | #include <iostream>
  +++ |+#include <queue>
    2 | using namespace std;
a.cc:7:11: error: expected primary-expression before 'long'
    7 |     queue<long long> vec;
      |           ^~~~
a.cc:10:6: error: 'vec' was not declared in this scope
   10 |      vec.push(i);}}
      |      ^~~
a.cc:12:7: error: 'vec' was not declared in this scope
   12 |     a=vec.front(vec.size()/2+1);
      |       ^~~
Language: C++

#include <iostream>
using namespace std;
int main() {
    long long N;
    cin >> N;
    int counter=0;
    queue<long long>vec;
    for(long long i=1;i*i<N;i++){
    if(N%i==0){
     vec.push(i);}}
    long long a;
    a=vec.front(vec.size()/2+1);
    while(a>0){
    a=a/10;
    counter++;}
    cout<<counter<<endl;}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:5: error: 'queue' was not declared in this scope
    7 |     queue<long long>vec;
      |     ^~~~~
a.cc:2:1: note: 'std::queue' is defined in header '<queue>'; this is probably fixable by adding '#include <queue>'
    1 | #include <iostream>
  +++ |+#include <queue>
    2 | using namespace std;
a.cc:7:11: error: expected primary-expression before 'long'
    7 |     queue<long long>vec;
      |           ^~~~
a.cc:10:6: error: 'vec' was not declared in this scope
   10 |      vec.push(i);}}
      |      ^~~
a.cc:12:7: error: 'vec' was not declared in this scope
   12 |     a=vec.front(vec.size()/2+1);
      |       ^~~
Language: C++

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

typedef long long llint;
typedef long double ld;
#define inf 1e18
#define mod 1000000007
priority_queue<llint,vector<llint>,greater<llint> > que;
priority_queue<llint> q;
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }

vector<llint> v;

int calc_digits(llint x){
	llint ret=0;
	while(x){
		x/=10;
		ret++;
	}
	return ret;
}

void solve(){
	llint n;
	cin >> n;
	llint ans=inf;
	for(int i=1;i*i<=n;i++){
		if(n%i==0){
			llint B=n/i;
			int F=max(calc_digits(i),calc_digits(B));
			ans=min(ans,F);
		}
	}
	cout << ans << endl;
}

int main() {
  solve();
  return 0;
}


Compiler output:
a.cc: In function 'void solve()':
a.cc:31:32: error: no matching function for call to 'min(llint&, int&)'
   31 |                         ans=min(ans,F);
      |                             ~~~^~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:31:32: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   31 |                         ans=min(ans,F);
      |                             ~~~^~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:31:32: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   31 |                         ans=min(ans,F);
      |                             ~~~^~~~~~~
Language: C++

#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
#define rep(i, c) for (int i = 0; i < (int)c; i++)
#define all(v) v.begin(), v.end()
using ll = long long;
using P = pair<int, int>;
const int inf = 1000000000; //10^9
const ll MOD = 1e9 + 7;
//加算代入演算子は+=！！！！！
//int 2^31 10^9まで
int calc_digit(ll n)
{
    int res = 0;
    while (n > 0)
    {
        res++;
        n /= 10;
    }
    return res;
}
int main()
{
    ll N;
    cin >> N;
    ll res = inf;
    for (ll a = 1; a * a <= N; ++a) {
        if (N % a != 0) {
            continue;
        }
        ll b = n / a;
        ll temp = max(calc_digit(a), calc_digit(b));
        res = min(res, temp);
    }
    cout << res << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:31:16: error: 'n' was not declared in this scope
   31 |         ll b = n / a;
      |                ^
Language: C++

//桁数の計算
int calc_digit(ll n)
{
	int res = 0;
	while (n > 0)
	{
		res++;
		n /= 10;
	}
	return res;
}

int main()
{
	ll n;
	cin >> n;
	ll res = inf;
	for (ll a = 1; a * a <= n; ++a) //素数か調べる ルートnまで順に試し割
	{
		if (n % a != 0) //割り切れなければ以降飛ばす
		{
			continue;
		}
		ll b = n / a; //a * b = n の変換
		ll temp = max(calc_digit(a), calc_digit(b)); //大きい方を取得
		res = min(res, temp); //結果は最小値
	}
	cout << res << endl;
	return 0;
}

Compiler output:
a.cc:2:16: error: 'll' was not declared in this scope
    2 | int calc_digit(ll n)
      |                ^~
a.cc: In function 'int main()':
a.cc:15:9: error: 'll' was not declared in this scope
   15 |         ll n;
      |         ^~
a.cc:16:9: error: 'cin' was not declared in this scope
   16 |         cin >> n;
      |         ^~~
a.cc:16:16: error: 'n' was not declared in this scope
   16 |         cin >> n;
      |                ^
a.cc:17:11: error: expected ';' before 'res'
   17 |         ll res = inf;
      |           ^~~~
      |           ;
a.cc:18:16: error: expected ';' before 'a'
   18 |         for (ll a = 1; a * a <= n; ++a) //素数か調べる ルートnまで順に試し割
      |                ^~
      |                ;
a.cc:18:24: error: 'a' was not declared in this scope
   18 |         for (ll a = 1; a * a <= n; ++a) //素数か調べる ルートnまで順に試し割
      |                        ^
a.cc:24:19: error: expected ';' before 'b'
   24 |                 ll b = n / a; //a * b = n の変換
      |                   ^~
      |                   ;
a.cc:25:19: error: expected ';' before 'temp'
   25 |                 ll temp = max(calc_digit(a), calc_digit(b)); //大きい方を取得
      |                   ^~~~~
      |                   ;
a.cc:26:17: error: 'res' was not declared in this scope
   26 |                 res = min(res, temp); //結果は最小値
      |                 ^~~
a.cc:26:32: error: 'temp' was not declared in this scope
   26 |                 res = min(res, temp); //結果は最小値
      |                                ^~~~
a.cc:26:23: error: 'min' was not declared in this scope; did you mean 'main'?
   26 |                 res = min(res, temp); //結果は最小値
      |                       ^~~
      |                       main
a.cc:28:9: error: 'cout' was not declared in this scope
   28 |         cout << res << endl;
      |         ^~~~
a.cc:28:17: error: 'res' was not declared in this scope
   28 |         cout << res << endl;
      |                 ^~~
a.cc:28:24: error: 'endl' was not declared in this scope
   28 |         cout << res << endl;
      |                        ^~~~
Language: C++

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

int main(){
	long long int N;
  	cin >> N;
  	int ans = to_string(N).size();
  	for(long long int i = 1; i*i<=N;i++){
    	if (N%i == 0){
        	ans = min(ans,max(to_string(i).size(),to_string(N/i).size()));
        }
    }
  	cout << ans << endl;
  
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:26: error: no matching function for call to 'min(int&, const long unsigned int&)'
   10 |                 ans = min(ans,max(to_string(i).size(),to_string(N/i).size()));
      |                       ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:10:26: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long unsigned int')
   10 |                 ans = min(ans,max(to_string(i).size(),to_string(N/i).size()));
      |                       ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:10:26: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   10 |                 ans = min(ans,max(to_string(i).size(),to_string(N/i).size()));
      |                       ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Language: C++

#include <bits/stdc++.h>

using namespace std;

int count_digits(int n){
  digits = 1;
  while(n / 10 > 0){
    digits++;
    n /= 10;
  }
  return digits;
}
int max_digits(int a, int b) {
  int digits_1, digits_2;
  
  digits_1 = count_digits(a);
  digits_2 = count_digits(b);
  
  if (digits_1 > digits_2) {
    return digits_1;
  } else {
    return digits_2;
  }
} 

int main() {
  int N;
  cin >> N;
  
  int ans = 0;
  int digits;
  for (int A = 1; A <= sqrt(N); A++) {
    if(N % A != 0) {
      continue;
    } else {
      int B = N / A;
      digits = max_digits(A, B);
      if (digits > ans) {
        ans = digits;
      }
    }
  }
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int count_digits(int)':
a.cc:6:3: error: 'digits' was not declared in this scope
    6 |   digits = 1;
      |   ^~~~~~