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

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


int main(){
    long N;
    cin >> N;
    
    if(N%2 == 1){
        out << ans << "\n";
        return 0;
    }
    N= N/2;
    while(N>5){
        ans += N/5;
        N = N/5;
    }
    cout << ans << "\n";
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:9: error: 'out' was not declared in this scope
   10 |         out << ans << "\n";
      |         ^~~
a.cc:10:16: error: 'ans' was not declared in this scope; did you mean 'abs'?
   10 |         out << ans << "\n";
      |                ^~~
      |                abs
a.cc:15:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   15 |         ans += N/5;
      |         ^~~
      |         abs
a.cc:18:13: error: 'ans' was not declared in this scope; did you mean 'abs'?
   18 |     cout << ans << "\n";
      |             ^~~
      |             abs
Language: C++

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


int main(){
    string s;
    cin >> s;
    int n = 0;
    n = s[s.length()-1]-'0';
    if (n%2 ==1){
        cout << 0 << "\n";
        return 0;
    }
    unsigned long long N,ans;
    N = strtoull(s.substr(0,s.length()-1));
    ans = N;
    while(N>5){
        ans += N/5;
        N = N/5;
    }
    cout << ans << "\n";
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:26: error: cannot convert 'std::__cxx11::basic_string<char>' to 'const char*'
   15 |     N = strtoull(s.substr(0,s.length()-1));
      |                  ~~~~~~~~^~~~~~~~~~~~~~~~
      |                          |
      |                          std::__cxx11::basic_string<char>
In file included from /usr/include/c++/14/cstdlib:79,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:42,
                 from a.cc:1:
/usr/include/stdlib.h:206:64: note:   initializing argument 1 of 'long long unsigned int strtoull(const char*, char**, int)'
  206 | extern unsigned long long int strtoull (const char *__restrict __nptr,
      |                                         ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
Language: C++

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


int main(){
    string s;
    cin >> s;
    int n = 0;
    n = s[s.length()-1]-'0';
    if (n%2 ==1){
        cout << 0 << "\n";
        return 0;
    }
    unsigned long long N,ans;
    N = atoll(s.substr(0,s.length()-1));
    ans = N;
    while(N>5){
        ans += N/5;
        N = N/5;
    }
    cout << ans << "\n";
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:23: error: cannot convert 'std::__cxx11::basic_string<char>' to 'const char*'
   15 |     N = atoll(s.substr(0,s.length()-1));
      |               ~~~~~~~~^~~~~~~~~~~~~~~~
      |                       |
      |                       std::__cxx11::basic_string<char>
In file included from /usr/include/c++/14/cstdlib:79,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:42,
                 from a.cc:1:
/usr/include/stdlib.h:113:55: note:   initializing argument 1 of 'long long int atoll(const char*)'
  113 | __extension__ extern long long int atoll (const char *__nptr)
      |                                           ~~~~~~~~~~~~^~~~~~
Language: C++

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


int main(){
    string s;
    cin >> s;
    int n = 0;
    n = s[s.length()-1]-'0';
    if (n%2 ==1){
        cout << 0 << "\n";
        return 0;
    }
    unsigned long long N,ans;
    N = atoull(s.substr(0,s.length()-1));
    ans = N;
    while(N>5){
        ans += N/5;
        N = N/5;
    }
    cout << ans << "\n";
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:9: error: 'atoull' was not declared in this scope; did you mean 'atoll'?
   15 |     N = atoull(s.substr(0,s.length()-1));
      |         ^~~~~~
      |         atoll
Language: C++

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


int main(){
    string s;
    cin >> s;
    int n = 0;
    n = s[s.length()-1]-'0';
    if (n%2 ==1){
        cout << 0 << "\n";
        return 0;
    }
    unsigned long long N,ans;
    N = s.substr(0,s.length()-1);
    ans = N;
    while(N>5){
        ans += N/5;
        N = N/5;
    }
    cout << ans << "\n";
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:17: error: cannot convert 'std::__cxx11::basic_string<char>' to 'long long unsigned int' in assignment
   15 |     N = s.substr(0,s.length()-1);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~
      |                 |
      |                 std::__cxx11::basic_string<char>
Language: C++

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


int main(){
    string s;
    cin >> s;
    int n = 0;
    n = s[s.length()-1]-'0';
    if (a%2 ==1){
        cout << 0 << "\n";
        return 0;
    }
    unsigned long long N,ans;
    N = s.substr(0,s.length()-1);
    ans = N;
    while(N>5){
        ans += N/5;
        N = N/5;
    }
    cout << ans << "\n";
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:9: error: 'a' was not declared in this scope
   10 |     if (a%2 ==1){
      |         ^
a.cc:15:17: error: cannot convert 'std::__cxx11::basic_string<char>' to 'long long unsigned int' in assignment
   15 |     N = s.substr(0,s.length()-1);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~
      |                 |
      |                 std::__cxx11::basic_string<char>
Language: C++

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


int main(){
    string s;
    cin >> s;
    int n = 0;
    n = s[s.length()-1]-"0";
    if (a%2 ==1){
        cout << 0 << "\n";
        return 0;
    }
    unsigned long long N,ans;
    N = s.substr(0,s.length()-1);
    ans = N;
    while(N>5){
        ans += N/5;
        N = N/5;
    }
    cout << ans << "\n";
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:24: error: invalid operands of types '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'} and 'const char [2]' to binary 'operator-'
    9 |     n = s[s.length()-1]-"0";
a.cc:10:9: error: 'a' was not declared in this scope
   10 |     if (a%2 ==1){
      |         ^
a.cc:15:17: error: cannot convert 'std::__cxx11::basic_string<char>' to 'long long unsigned int' in assignment
   15 |     N = s.substr(0,s.length()-1);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~
      |                 |
      |                 std::__cxx11::basic_string<char>
Language: C++

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


int main(){
    unsigned long long N;
    cin >> N;
    if(N%2 == 1){
        cout << 0 << "\n";
        return 0;
    }
    unsigned long long ans = 0;
    N = N/2
    while(N>5){
        ans += N/5;
        N = N/5;
    }
    cout << ans << "\n";
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:12: error: expected ';' before 'while'
   13 |     N = N/2
      |            ^
      |            ;
   14 |     while(N>5){
      |     ~~~~~
Language: C++

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


int main(){
    unsigned long lon N;
    cin >> N;
    if(N%2 == 1){
        cout << 0 << "\n";
        return 0;
    }
    unsigned long long ans = 0;
    N = N/2
    while(N>5){
        ans += N/5;
        N = N/5;
    }
    cout << ans << "\n";
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:23: error: expected initializer before 'N'
    6 |     unsigned long lon N;
      |                       ^
a.cc:7:12: error: 'N' was not declared in this scope
    7 |     cin >> N;
      |            ^
Language: C++

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


int main(){
    unsigned long lon N;
    cin >> N;
    if(N%2 == 1){
        cout << 0 << "\n";
        return 0;
    }
    N = N/2;
    while(N>5){
        ans += N/5;
        N = N/5;
    }
    cout << ans << "\n";
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:23: error: expected initializer before 'N'
    6 |     unsigned long lon N;
      |                       ^
a.cc:7:12: error: 'N' was not declared in this scope
    7 |     cin >> N;
      |            ^
a.cc:14:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   14 |         ans += N/5;
      |         ^~~
      |         abs
a.cc:17:13: error: 'ans' was not declared in this scope; did you mean 'abs'?
   17 |     cout << ans << "\n";
      |             ^~~
      |             abs
Language: C++

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


int main(){
    unsigned long lon N;
    cin >> N;
    if(N%2 == 1){
        cout << 0 << "\n";
        return 0;
    }
    int a =0;
    unsigned long long tmp = 0;
    unsigned long long ans = 0;]
    N = N/2;
    while(N>5){
        ans += N/5;
        N = N/5;
    }
    cout << ans << "\n";
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:23: error: expected initializer before 'N'
    6 |     unsigned long lon N;
      |                       ^
a.cc:7:12: error: 'N' was not declared in this scope
    7 |     cin >> N;
      |            ^
a.cc:14:32: error: expected primary-expression before ']' token
   14 |     unsigned long long ans = 0;]
      |                                ^
Language: C++

def zero_count(n)
  return 0 if n % 2 == 1
  n = n / 2
  div = 5
  count = 0
  exp = 1
  while div < n
    count += n / div
    exp += 1
    div = 5 ** exp
  end
  count
end
puts zero_count(gets.to_i)


Compiler output:
a.cc:1:1: error: 'def' does not name a type
    1 | def zero_count(n)
      | ^~~
Language: C++

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

int32_t main(){
     int n; cin>>n;
     if(n%2){
          cout<<0;
     }
     else{
          int cnt=0;
          int curr=5;
          while(1){
               if(curr>n)break;
               cnt+=(n/curr)/2;
               curr=curr*5;
          }
          cout<<cnt;
     }
}

Compiler output:
a.cc:1:9: error: #include expects "FILENAME" or <FILENAME>
    1 | #include#include<bits/stdc++.h>
      |         ^
a.cc:5:1: error: 'int32_t' does not name a type
    5 | int32_t main(){
      | ^~~~~~~
a.cc:1:1: note: 'int32_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
  +++ |+#include <cstdint>
    1 | #include#include<bits/stdc++.h>
Language: C++

#include <bits/stdc++.h>
using namespace std;
//ifstream cin("lineup.in");
//ofstream cout("lineup.out");
#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math")
#define IOS ios::sync_with_stdio(0),cin.tie(0),cout.tie(0)
int main(){
    ISO;
    long long n;
    cin>>n;
    if(n%2){
	cout<<0<<endl;
    }
    else{
	n/=2;
	long long ans=0;
	while(n!=1){
	    ans+=n/5;
	    n/=5;
	}
	cout<<ans<<endl;
    }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:5: error: 'ISO' was not declared in this scope; did you mean 'IOS'?
    8 |     ISO;
      |     ^~~
      |     IOS
Language: C++

#include<iostream>
using namespace std;
int f(long long int n)
{
  if(n<2)
    return 1;
  else
    return n*f(n-2);
}
int main()
{
  long long int n;
  cin>>n;
  long long int p=f(n);
  long long int c=0;
  while(p>0)
  {
    long long int r=p%10;
    if(r==0)
      c++;
    else 
      break;
    p=p/10;
  }
  cout<<c;

Compiler output:
a.cc: In function 'int main()':
a.cc:25:11: error: expected '}' at end of input
   25 |   cout<<c;
      |           ^
a.cc:11:1: note: to match this '{'
   11 | {
      | ^
Language: Java

import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    long N = sc.nextLong();
    long answer =0;
    if(N%2==1){
      System.out.println(0);
      return;
    }
    long tmp = N/2;
    for(long i=1;i<30;i++){
      answer = answer + tmp/(Math.power((long)5,i));
    }
    System.out.println(answer);
    
    
  }
  

  
}

Compiler output:
Main.java:13: error: cannot find symbol
      answer = answer + tmp/(Math.power((long)5,i));
                                 ^
  symbol:   method power(long,long)
  location: class Math
1 error
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main()
{
    long long s;
    cin>>s;

    for(long long i=1000000000000000000;i>=0;i=i-2)
    {

    }
    cout<<"hello"
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:18: error: expected ';' before 'return'
   12 |     cout<<"hello"
      |                  ^
      |                  ;
   13 |     return 0;
      |     ~~~~~~
Language: C++

#include<iostream>
int main()
{
  long long count=0,N,S=5;
  cin>>N;
  count=N/10;
  if(N%2==1){
  cout<<0<<endl;
    return 0;
  }
  while(N/S>0){
    count+=N/S;
    S*=5;
  }
  cout<<count<<endl;
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |   cin>>N;
      |   ^~~
      |   std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:8:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    8 |   cout<<0<<endl;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:8:12: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    8 |   cout<<0<<endl;
      |            ^~~~
      |            std::endl
In file included from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:15:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   15 |   cout<<count<<endl;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:15:16: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   15 |   cout<<count<<endl;
      |                ^~~~
      |                std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for(int i=0; i <(n) ; ++i)
#define PI 3.14159265
#define INF 2147483647
using namespace std;
using ll = long long;
void self_max(int &a,int b){
	a = max(a,b);
}
void self_min(int &a,int b){
	a = min(a,b);
}
ll go1(ll n ,int p){
	if(n==0) return 0;
	return n/p + go(n/p,p);
}

ll go(ll n , int p){
	ll res = go1(n/2,p);
	if(p == 2) res += n/2;
	return res;

}

int main(){
	ll n; cin >> n;
	if(n&1) return 0;

	ll ans = min(go(n,2),go(n,5));
	return 0;
}

Compiler output:
a.cc: In function 'll go1(ll, int)':
a.cc:15:22: error: 'go' was not declared in this scope; did you mean 'go1'?
   15 |         return n/p + go(n/p,p);
      |                      ^~
      |                      go1
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for(int i=0; i <(n) ; ++i)
#define PI 3.14159265
#define INF 2147483647
using namespace std;
using ll = long long;
void self_max(int &a,int b){
	a = max(a,b);
}
void self_min(int &a,int b){
	a = min(a,b);
}
ll go1(ll n ,int p){
	if(n==0) return 0;
	return n/p + go(n/p,p);
}

ll go(ll n , int p){
	ll res = go1(n/2,,p);
	if(p == 2) res += n/2;
	return res;
	
}

int main(){
	ll n; cin >> n;
	if(n&1) return 0;

	ll ans = min(go(n,2),go(n,5));
	return 0;
}

Compiler output:
a.cc: In function 'll go1(ll, int)':
a.cc:15:22: error: 'go' was not declared in this scope; did you mean 'go1'?
   15 |         return n/p + go(n/p,p);
      |                      ^~
      |                      go1
a.cc: In function 'll go(ll, int)':
a.cc:19:26: error: expected primary-expression before ',' token
   19 |         ll res = go1(n/2,,p);
      |                          ^
Language: C++

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


int main(){
    ll n;
    cin >> n;
    ll cntr = 0, i=10;
    if(n%2)
        cout << "0";
        return 0;
    else
        cntr+=n/i;
        while(i<=n){
            i*=5;
            cntr+=n/i;
        }
    
    cout << cntr;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:5: error: 'else' without a previous 'if'
   13 |     else
      |     ^~~~
Language: C++

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

int main(){
  ll N; cin >> N;
  if(N%2 == 1) cout << 0 << endl;
  else{
    // 2 たくさん
    // 5 全然出てこない
    
    // 素因数5の個数
    
    // 5 10 15 20
    ll ans = 0;
    for(ll x = 5; x*x <= N; x *=5){
      ans += N/x/2;
    }
    cout << ans << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'll' was not declared in this scope
    5 |   ll N; cin >> N;
      |   ^~
a.cc:5:16: error: 'N' was not declared in this scope
    5 |   ll N; cin >> N;
      |                ^
a.cc:14:7: error: expected ';' before 'ans'
   14 |     ll ans = 0;
      |       ^~~~
      |       ;
a.cc:15:11: error: expected ';' before 'x'
   15 |     for(ll x = 5; x*x <= N; x *=5){
      |           ^~
      |           ;
a.cc:15:19: error: 'x' was not declared in this scope
   15 |     for(ll x = 5; x*x <= N; x *=5){
      |                   ^
a.cc:16:7: error: 'ans' was not declared in this scope; did you mean 'abs'?
   16 |       ans += N/x/2;
      |       ^~~
      |       abs
a.cc:18:13: error: 'ans' was not declared in this scope; did you mean 'abs'?
   18 |     cout << ans << endl;
      |             ^~~
      |             abs
Language: C++

n_2,r= divmod(int(input()),2)
ans=0
i=1
if not r:
  while n_2 >= 5**i:
    ans += n_2//(5**i)
    i+=1
print(ans)


Compiler output:
a.cc:1:1: error: 'n_2' does not name a type
    1 | n_2,r= divmod(int(input()),2)
      | ^~~
Language: Java

import java.io.BufferedReader;
import java.io.InputStreamReader;
 
public class Main {
 
	public static void main(String[] args) throws Exception {
		// TODO 自動生成されたメソッド・スタブ
		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		String W = in.readLine();
 
		long N = Long.parseLong(W);
 
		long ans =0;
		if(N%2 == 1){
			//奇数の場合は0
			ans =0;
		}else{
//			ans=N/10;
			for(long i=5;i<=N;i*=5){
				ans+=((N/2)/i);
			}
		}
 
		System.out.println(ans);
 
	}
}
import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {

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

		long N = Long.parseLong(W);

		long ans =0;
		if(N==0){
			ans = 1;
		}else if(N%2 == 1){
			//奇数の場合は0
			ans =0;
		}else{
//			ans=N/10;
			for(long i=5;i<=N;i*=5){
				ans+=((N/2)/i);
			}
		}

		System.out.println(ans);

	}
}
提出情報
提出日時	

Compiler output:
Main.java:28: error: class, interface, enum, or record expected
import java.io.BufferedReader;
^
Main.java:29: error: class, interface, enum, or record expected
import java.io.InputStreamReader;
^
Main.java:57: error: class, interface, enum, or record expected
????
^
3 errors
Language: C++

#include "bits/stdc++.h"

#define REP(i, n, N) for(ll i=(n); i<(N); i++)
#define RREP(i, n, N) for(ll i=(N-1); i>=(n); i--)
#define LREP(lst,itr) for(auto itr = lst.begin(); itr != lst.end(); ++itr)
#define CK(n, a, b) ((a)<=(n)&&(n)<(b))
#define ALL(v) (v).begin(),(v).end()
#define MCP(a, b) memcpy(b,a,sizeof(b))
#define P(s) cout<<(s)<<endl
#define P2(a, b) cout<<(a)<<" "<<(b)<<endl
#define P3(a, b, c) cout<<(a)<<" "<<(b)<<" "<<(c)<<endl
#define V2(T) vector<vector<T>>
typedef long long ll;
using namespace std;
const ll MOD = 1e9 + 7;
const ll INF = 1e18;

int main(){
    ll N,ans=0,base=5;
    cin >> N;
    if(N%2){
        P(0);
        return;
    }
    N/=2;
    while(1){
        if(N/base){
            ans+=N/base;
            base*=5;
        }else{
            break;
        }
    }
    P(ans);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:9: error: return-statement with no value, in function returning 'int' [-fpermissive]
   23 |         return;
      |         ^~~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  long long  n;
  cin>>n;
  if(n%2)
    cout<<"0";
  else{
    long long s=0,i=0;
    while(n/(10*pow(5,i)){
      s+=n/(10*pow(5,i));
      i++;
    }
      cout<<s;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:26: error: expected ')' before '{' token
   10 |     while(n/(10*pow(5,i)){
      |          ~               ^
      |                          )
Language: C++

#include <bits/stdc++.h>
using namespace std;
int devide(int i){
  if(i==10){
    return 1;
  }
  if(i%10==0){
    return devide(i-10)+1;
  }else{
    return devide(i-2)
  }
}

int main(){
  int64_t N,count;
  cin >> N;
  count = 0;
  if(N%2 != 0){
    cout << count << endl;
  }else{
    count =int devide(N);
    cout << count << endl;
  }
    
    
    
}


Compiler output:
a.cc: In function 'int devide(int)':
a.cc:10:23: error: expected ';' before '}' token
   10 |     return devide(i-2)
      |                       ^
      |                       ;
   11 |   }
      |   ~                    
a.cc: In function 'int main()':
a.cc:21:12: error: expected primary-expression before 'int'
   21 |     count =int devide(N);
      |            ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int devide(int i){
  if(i==10){
    return 1;
  }
  if(i%10==0){
    return devide(int i-10)+1;
  }else{
    return devide(int i-2)
  }
}

int main(){
  int64_t N,count;
  cin >> N;
  count = 0;
  if(N%2 != 0){
    cout << count << endl;
  }else{
    count =int devide(N);
    cout << count << endl;
  }
    
    
    
}


Compiler output:
a.cc: In function 'int devide(int)':
a.cc:8:19: error: expected primary-expression before 'int'
    8 |     return devide(int i-10)+1;
      |                   ^~~
a.cc:10:19: error: expected primary-expression before 'int'
   10 |     return devide(int i-2)
      |                   ^~~
a.cc:10:27: error: expected ';' before '}' token
   10 |     return devide(int i-2)
      |                           ^
      |                           ;
   11 |   }
      |   ~                        
a.cc: In function 'int main()':
a.cc:21:12: error: expected primary-expression before 'int'
   21 |     count =int devide(N);
      |            ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define ll unsigned long long int
#define vi vector<ll>
#define pi pair<ll,ll>
#define vp vector<pi>
#define pb push_back
#define mp map<ll,ll>
#define endl '\n'
#define fast ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
ll gcd(ll a, ll b) 
{ 
    if (b == 0) 
        return a; 
    return gcd(b, a % b);  
      
}
 
int32_t main(){
    fast;
    ll n;
    cin>>n;
    if(n%2)
    cout<<0;
    else
    {
        ll m=n;
        ll c=0;
        for(ll i=n;i>0;i/=10)
        c++;
        ll ans=0;
        while(c>1)
        {
            x=n/pow(5,c);
            ans=ans+x/2;
            c--;
        }
        cout<<ans;
    }
    return 0;
}

Compiler output:
a.cc: In function 'int32_t main()':
a.cc:34:13: error: 'x' was not declared in this scope
   34 |             x=n/pow(5,c);
      |             ^
Language: C++

#include <iostream>
using namespace std;

int main()
{
int count = 0;//
int N = 0;
int f = 1;
cin >> N;
if (N % 2 == 0)
{
    N = df(N);
    for(int i = 1; i < 20; i++) //入力制限によって変動する
   {
       for(int k = 0; k < i;k++)
             f * 5;
       if(N % f == 0)
             break;
       count += N % f;
       f = 1;
   }
}
cout << count << endl;
return 0;
}

int df(int n)
{
    if(n == 1)
          return 1;
    else if(n == 0)
          return 1;
    else
          return n * (n - 2);

}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:9: error: 'df' was not declared in this scope; did you mean 'f'?
   12 |     N = df(N);
      |         ^~
      |         f
Language: C++

#include <stdio.h>

int main()
{
int count = 0;//
int N = 0;
int f = 1;
cin >> N;
if (N % 2 == 0)
{
    N = df(N);
    for(int i = 1; i < 20; i++) //入力制限によって変動する
   {
       for(int k = 0; k < i;k++)
             f * 5;
       if(N % f == 0)
             break;
       count += N % f;
       f = 1;
   }
}
cout << count << endl;
return 0
}

int df(int n)
{
    if(n == 1)
          return 1;
    else if(n == 0)
          return 1;
    else
          return n * (n - 2);

}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:1: error: 'cin' was not declared in this scope
    8 | cin >> N;
      | ^~~
a.cc:11:9: error: 'df' was not declared in this scope; did you mean 'f'?
   11 |     N = df(N);
      |         ^~
      |         f
a.cc:22:1: error: 'cout' was not declared in this scope; did you mean 'count'?
   22 | cout << count << endl;
      | ^~~~
      | count
a.cc:22:18: error: 'endl' was not declared in this scope
   22 | cout << count << endl;
      |                  ^~~~
a.cc:23:9: error: expected ';' before '}' token
   23 | return 0
      |         ^
      |         ;
   24 | }
      | ~
Language: C++

int main()
{
int count = 0;//
int N = 0;
int f = 1;
std::cin >> N;
if (N % 2 == 0)
{
    N = df(N);
    for(int i = 1; i < 20; i++) //入力制限によって変動する
   {
       for(int k = 0; k < i;k++)
             f * 5;
       if(N % f == 0)
             break;
       count += N % f;
       f = 1;
   }
}
std::cout << count <<endl;
return 0
}

int df(int n)
{
    if(n == 1)
          return 1;
    else if(n == 0)
          return 1;
    else
          return n * (n - 2);

}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:6: error: 'cin' is not a member of 'std'
    6 | std::cin >> N;
      |      ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | int main()
a.cc:9:9: error: 'df' was not declared in this scope; did you mean 'f'?
    9 |     N = df(N);
      |         ^~
      |         f
a.cc:20:6: error: 'cout' is not a member of 'std'
   20 | std::cout << count <<endl;
      |      ^~~~
a.cc:20:6: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:20:22: error: 'endl' was not declared in this scope
   20 | std::cout << count <<endl;
      |                      ^~~~
a.cc:21:9: error: expected ';' before '}' token
   21 | return 0
      |         ^
      |         ;
   22 | }
      | ~
Language: C++

#include<bits/stdc++.h>

using namespace std;

int main() {
  long long n;
  cin >> n;
  if (n % 2 == 1) {
    cout << "0\n";
  } else {
    LL res = 0;
    LL tmp = 10;
    while (tmp <= n) {
      res += n / tmp;
      tmp *= 5;
    }
    cout << res  << '\n';
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:5: error: 'LL' was not declared in this scope
   11 |     LL res = 0;
      |     ^~
a.cc:12:7: error: expected ';' before 'tmp'
   12 |     LL tmp = 10;
      |       ^~~~
      |       ;
a.cc:13:12: error: 'tmp' was not declared in this scope; did you mean 'tm'?
   13 |     while (tmp <= n) {
      |            ^~~
      |            tm
a.cc:14:7: error: 'res' was not declared in this scope
   14 |       res += n / tmp;
      |       ^~~
a.cc:17:13: error: 'res' was not declared in this scope
   17 |     cout << res  << '\n';
      |             ^~~
Language: C++

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

int main(){
  long long int num, ans = 0, num_copy;
  cin >> num;
  if(num < 2) cout << 1 << ensl;
  else if(num % 2 == 1) cout << 0 << endl;
  else{
    num -= num % 5;
    while(num > 0){
      num_copy = num;
      while(num_copy % 5){
        num_copy /= 5;
        ans++;
      }
      num -= 5;
    }
    cout << ans << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:28: error: 'ensl' was not declared in this scope
    7 |   if(num < 2) cout << 1 << ensl;
      |                            ^~~~
Language: C++

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

int main(){
  long long int num, ans = 0, num_copy;
  cin >> num;
  if(num < 2) cout << 1 << ensl;
  else if(num % 2 == 1) cout << 0 << ensl;
  else{
    num -= num % 5;
    while(num > 0){
      num_copy = num;
      while(num_copy % 5){
        num_copy /= 5;
        ans++;
      }
      num -= 5;
    }
    cout << ans << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:28: error: 'ensl' was not declared in this scope
    7 |   if(num < 2) cout << 1 << ensl;
      |                            ^~~~
a.cc:8:38: error: 'ensl' was not declared in this scope
    8 |   else if(num % 2 == 1) cout << 0 << ensl;
      |                                      ^~~~
Language: C++

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

int main()
{
  int64_t a,b,k;
  
  b=1;
  k=0;
  cin >> a;
  while(a=>2)
  {
    b=b*a;
    a=a-2;
  }
  while((b%10)==0)
  {
    b=b/10;
 	k++;
  }
  cout << k <<endl; 
  
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:11: error: expected primary-expression before '>' token
   11 |   while(a=>2)
      |           ^
Language: C++

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

int main()
{
  int64_t a,b,k;
  
  b=1;
  k=0;
  cin >> a;
  while(a=>2)
  {
    b=b*a;
    a=a-2;
  }
  while((b%10)==0)
  {
    b=b/10;
 	k++;
  }
  cout << k <<emdl; 
  
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:11: error: expected primary-expression before '>' token
   11 |   while(a=>2)
      |           ^
a.cc:21:15: error: 'emdl' was not declared in this scope
   21 |   cout << k <<emdl;
      |               ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
int main()
{
    ll n;scanf("%lld",&n);
    if(n&1){cout<<0<<endl;return 0;}
    while(n)
    {
        n/=5;ans+=n/2;
    }
    printf("%lld\n",ans);
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:14: error: 'ans' was not declared in this scope; did you mean 'abs'?
   10 |         n/=5;ans+=n/2;
      |              ^~~
      |              abs
a.cc:12:21: error: 'ans' was not declared in this scope; did you mean 'abs'?
   12 |     printf("%lld\n",ans);
      |                     ^~~
      |                     abs
Language: C++

#include<iostream>
#include<algorithm>
#include<vector>
#include <map>
#include<climits>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define ll (long long)

void solve(){
  ll N;
  cin>>N;
  ll ans=0;
  if (N%2==1){
    cout<<ans<<endl;
  }else{
    ll d=10;
    while(N>=d){
      ans+=N/d;
      d*=5;
    }
    cout<<ans<<endl;
  }   
  return;
}

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


Compiler output:
a.cc: In function 'void solve()':
a.cc:11:6: error: 'N' was not declared in this scope
   11 |   ll N;
      |      ^
a.cc:13:6: error: 'ans' was not declared in this scope; did you mean 'abs'?
   13 |   ll ans=0;
      |      ^~~
      |      abs
a.cc:17:8: error: 'd' was not declared in this scope
   17 |     ll d=10;
      |        ^
Language: C++

#include<iostream>
#include<algorithm>
#include<vector>
#include <map>
#include<climits>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)


void solve(){
  int N;
  cin>>N;
  int ans=0;
  if (N%2==1){
    cout<<ans<<endl;
  }else{
    int d=50
    while(N>d){
      ans+=N/d;
      d*=5;
    }
    cout<<ans<<endl;
  }   
  return;
}

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

Compiler output:
a.cc: In function 'void solve()':
a.cc:18:5: error: expected ',' or ';' before 'while'
   18 |     while(N>d){
      |     ^~~~~
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 pair<int, int> P;

int main() {
  ll n;
  cin >> n;
  if (n%2) cout << 0 << endl;
  else {
    ll ans = 0;
    ll tmp = 10;
    while (tmp < n) {
      ans += n/tmp;
      if (tmp > 2e17) break;
      tmp <tmp *= 5;
    }
    cout << ans << endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:11: error: lvalue required as left operand of assignment
   17 |       tmp <tmp *= 5;
      |       ~~~~^~~~
Language: C++

/*Author: Anikash Chakraborty
Language: cpp
*/
#include <bits/stdc++.h>
#define REP(i,n) for (int i = 0; i < n; i++)
#define pb push_back
#define ff first
#define ss second
#define ii pair<int,int>
#define vi vector<int>
#define vii vector<ii>
#define MAX 1000002
#define MOD 1000000007
#define ll long long



using namespace std;

//ll dp[MAX];
//ll a[MAX];
//ll right(ll *a,ll n,ll x){
//    ll ans=a[x];
//    for (int (i) = x; (i) <n ; ++(i)) {
//        ans=max(a[i],ans);
//    }
//    return ans;
//}
//ll left(ll *a,ll n, ll x){
//    ll ans=a[x];
//    for (int (i) = x; (i) >=0 ; --(i)) {
//        ans=max(a[i],ans);
//    }
//    return ans;
//}
int main()
{
    ll n;cin>>n;
    if(n&1) cout<<0<<endl;
    else{
        ll cnt = 0;
        while(n){
            cnt += (n/5)/2;
            n/=5;
        }
        cout<<cnt<<endl;

    return  0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:49:2: error: expected '}' at end of input
   49 | }
      |  ^
a.cc:37:1: note: to match this '{'
   37 | {
      | ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{long long n;long long count=0;
 cin>>n;long long num5=5
 long long c=n/2;
 if (n%2!=0)
   cout<<0;
 else
   {while (num5 <= n) {
	  count += (n / num5) / 2;
	  num5 *= 5;
	}
     cout<<count;
   }
 return 0;}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:2: error: expected ',' or ';' before 'long'
    6 |  long long c=n/2;
      |  ^~~~
Language: C++

def nf(N):
	if N < 2:
		return 1
	return N * nf(N-2)
 

def zeroNum(NUM):
	count = 0
	strNUM = str(NUM)
	for i in reversed(range(0, len(strNUM), 1)):
		if(strNUM[i] == '0'):
			count += 1
		else:
			return count


if __name__ == '__main__':
	N = int(input())
	NFN = nf(N)
	print(zeroNum(NFN))


Compiler output:
a.cc:17:16: warning: multi-character literal with 8 characters exceeds 'int' size of 4 bytes
   17 | if __name__ == '__main__':
      |                ^~~~~~~~~~
a.cc:1:1: error: 'def' does not name a type
    1 | def nf(N):
      | ^~~
Language: C++

def nf(N):
	if N < 2:
		return 1
	return N * nf(N-2)
 

def zeroNum(NUM):
	count = 0
	strNUM = str(NUM)
	for i in reversed(range(0, len(strNUM), 1)):
		if(strNUM[i] == '0'):
			count += 1
		else:
			return count


if __name__ == '__main__':
	N = int(input())
	NFN = nf(N)
	print(zeroNum(NFN))
      
          

Compiler output:
a.cc:17:16: warning: multi-character literal with 8 characters exceeds 'int' size of 4 bytes
   17 | if __name__ == '__main__':
      |                ^~~~~~~~~~
a.cc:1:1: error: 'def' does not name a type
    1 | def nf(N):
      | ^~~
Language: C++

#include <bits/stdc++.h>
#define int long long
#define io ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define pb push_back
#define rep(i,l,r) for(int i=l;i<r;i++)
#define bep(i,l,r) for(int i=l;i>=r;i--)
#define ld long double
#define ff first
#define ss second
#define pii pair<int,int>
#define vi vector<int>
#define vii vector<pii>
#define el '\n'
#define sz(s) s.size()
#define all(v) v.begin(),v.end()
#define mii map<int,int>
#define mr  make_pair
using namespace std;

int inf = 1e18;
const int N = 6e5+5;
int mod = 1e9+7;
/*
    int ncr(int n , int r ){
    	r = min(r,n-r);
    	int res = 1 ;
    	for(int i = 1 ; i <= r ; i++ ){
    		( res *= n-i+1 )%= mod;
    		res /= i ;
    	}
    	return res ;
    }
*/
//int powmod(int a,int b) {int res=1;if(a>=mod)a%=mod;for(;b;b>>=1){if(b&1)res=res*a;if(res>=mod)res%=mod;a=a*a;if(a>=mod)a%=mod;}return res;}

signed main()
{
    io
    int tt = 1;
    //cin>>tt;
    while(tt--)
    {
        int n;
        cin>>n;
        if(n&1)
        {
            cout<<"0";
            exit(0);
        }
        n/=2;
        int xxx = 5;
        while(n/xxx>0)
        {
            sum+= n/xxx;
            x*=5;
        }
        cout<<sum<<el;

    }
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:54:13: error: 'sum' was not declared in this scope
   54 |             sum+= n/xxx;
      |             ^~~
a.cc:55:13: error: 'x' was not declared in this scope
   55 |             x*=5;
      |             ^
a.cc:57:15: error: 'sum' was not declared in this scope
   57 |         cout<<sum<<el;
      |               ^~~
Language: C++

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

int main(){
  ll n;cin>>n;
  if(n%2)cout<<0;
  else {
    n/=2;ll sum=0;
    while(n){
      sum+=n/5;
      n/=5;
    }
  }
  cout<<sum;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:9: error: 'sum' was not declared in this scope
   15 |   cout<<sum;
      |         ^~~
Language: C++

#include <iostream>

using namespace std;

int main(){
  
  long n;
  long answer = 0;
  
  cin >> n;
  
  if(n % 2 != 0){
    cout << "0" << endl;
    return 1;
  }
  
  n /= 2;
  
  while(n >= 5){
    n = n / 5;
    answer += i;
  }
  
  cout << answer << endl;
  
  return 1;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:15: error: 'i' was not declared in this scope
   21 |     answer += i;
      |               ^
Language: C++

#include <iostream>

using namespace std;

int main(){
  
  int n;
  int answer = 0;
  
  cin >> n;
  
  if(n % 2 != 0){
    cout << "0" << endl;
    return 1;
  }
  
  n /= 2;
  
  while(n >= 5){
    n = n / 5;
    answer += i;
  }
  
  cout << answer << endl;
  
  return 1;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:21:15: error: 'i' was not declared in this scope
   21 |     answer += i;
      |               ^
Language: C++

#include <iostream>

int main(){
  
  int n;
  int answer = 0;
  
  cin >> n;
  
  if(n % 2 != 0){
    cout << "0" << endl;
    return 1;
  }
  
  n /= 2;
  
  for(int i = 1; n >= 5; i++){
    n /= 5;
    answer += i * n;
  }
  
  cout << answer << endl;
  
  return 1;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    8 |   cin >> n;
      |   ^~~
      |   std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:11:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   11 |     cout << "0" << endl;
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:11:20: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   11 |     cout << "0" << endl;
      |                    ^~~~
      |                    std::endl
In file included from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:22:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   22 |   cout << answer << endl;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:22:21: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   22 |   cout << answer << endl;
      |                     ^~~~
      |                     std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include <iostream>

int main(){
  
  int n;
  int answer = 0;
  
  cin >> n;
  
  if(n % 2 != 0){
    cout << 0 << endl;
  }
  
  n /= 2;
  
  for(int i = 1; n >= 5; i++){
    n /= 5;
    answer += i * n;
  }
  
  cout << answer << endl;
  
  return 1;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    8 |   cin >> n;
      |   ^~~
      |   std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:11:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   11 |     cout << 0 << endl;
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:11:18: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   11 |     cout << 0 << endl;
      |                  ^~~~
      |                  std::endl
In file included from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:21:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   21 |   cout << answer << endl;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:21:21: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   21 |   cout << answer << endl;
      |                     ^~~~
      |                     std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#E
n = int(input())
if n%2:
    print(0)
else:
    ans = 0
    a = 10
    while a <= n:
        ans += n//a
        a *= 5
    print(ans)

Compiler output:
a.cc:1:2: error: invalid preprocessing directive #E
    1 | #E
      |  ^
a.cc:2:1: error: 'n' does not name a type
    2 | n = int(input())
      | ^
Language: C++

#include <iostream>
#include <string>
#include <algorithm>
#include <cmath>
#include <map>
#include <vector>
#include <stack>
#include <queue>
#include <tuple>

using namespace std;
#define long long ll;
int dx[4] = {0,0,1,-1};
int dy[4] = {1,-1,0,0};
const int INF = 1<<29;

int main(){
    ll n;
    cin >> n;
    ll ans = 0;
    if(n%2!=0){
        ans = 0;
    }else{
        ll d=10;
        while(d<=n){
            ans+=n/d;
            d*=5;
        }
        cout <<ans<< endl;
    }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:5: error: 'll' was not declared in this scope
   18 |     ll n;
      |     ^~
a.cc:19:12: error: 'n' was not declared in this scope; did you mean 'yn'?
   19 |     cin >> n;
      |            ^
      |            yn
a.cc:20:7: error: expected ';' before 'ans'
   20 |     ll ans = 0;
      |       ^~~~
      |       ;
a.cc:22:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   22 |         ans = 0;
      |         ^~~
      |         abs
a.cc:24:11: error: expected ';' before 'd'
   24 |         ll d=10;
      |           ^~
      |           ;
a.cc:25:15: error: 'd' was not declared in this scope; did you mean 'dy'?
   25 |         while(d<=n){
      |               ^
      |               dy
a.cc:26:13: error: 'ans' was not declared in this scope; did you mean 'abs'?
   26 |             ans+=n/d;
      |             ^~~
      |             abs
a.cc:29:16: error: 'ans' was not declared in this scope; did you mean 'abs'?
   29 |         cout <<ans<< endl;
      |                ^~~
      |                abs
Language: C++

#include <iostream>
#include <string>
#include <algorithm>
#include <cmath>
#include <map>
#include <vector>
#include <stack>
#include <queue>
#include <tuple>

using namespace std;
#define long long ll;
int dx[4] = {0,0,1,-1};
int dy[4] = {1,-1,0,0};
const int INF = 1<<29;

vector<vector<int> > calcNext(const string &S) {
    int n = (int)S.size();
    vector<vector<int> > res(n+1, vector<int>(10, n));
    for (int i = n-1; i >= 0; --i) {
        for (int j = 0; j < 10; ++j) res[i][j] = res[i+1][j];
        res[i][S[i]-'0'] = i;
    }
    return res;
}

int main(){
    ll n;
    cin >> n;
    ll ans = 0;
    if(n%2!=0){
        ans = 0;
    }else{
        ll d=10;
        while(d<=n){
            ans += n/d;
            d*=5;
        }
        cout << ans << endl;
    }
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:28:5: error: 'll' was not declared in this scope
   28 |     ll n;
      |     ^~
a.cc:29:12: error: 'n' was not declared in this scope; did you mean 'yn'?
   29 |     cin >> n;
      |            ^
      |            yn
a.cc:30:7: error: expected ';' before 'ans'
   30 |     ll ans = 0;
      |       ^~~~
      |       ;
a.cc:32:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   32 |         ans = 0;
      |         ^~~
      |         abs
a.cc:34:11: error: expected ';' before 'd'
   34 |         ll d=10;
      |           ^~
      |           ;
a.cc:35:15: error: 'd' was not declared in this scope; did you mean 'dy'?
   35 |         while(d<=n){
      |               ^
      |               dy
a.cc:36:13: error: 'ans' was not declared in this scope; did you mean 'abs'?
   36 |             ans += n/d;
      |             ^~~
      |             abs
a.cc:39:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   39 |         cout << ans << endl;
      |                 ^~~
      |                 abs
Language: C++

#include<iostream>
using namespace std;
typedef long long ll;
int main() {
  ll n, b, c;
  c = 0;
  cin >> n;
  long long d = 0;
  do {
    d++;
    b = (n / (ll) pow(5, d));
    if (b == 0) {
      break;
    } else {
      c += b;
    }
  } while (true);
  cout << c;

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:19: error: 'pow' was not declared in this scope
   11 |     b = (n / (ll) pow(5, d));
      |                   ^~~
Language: C++

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

long long int function(int x) {
    if (x < 2) return 1;
    else return x * function(x - 2);
}

int main() {
    int n;
    cin >> n;
    long long int m = function(n);
    int count = 0
    while (m != 0) {
        num /= 10;
        count++;
    }
    cout << count << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:5: error: expected ',' or ';' before 'while'
   15 |     while (m != 0) {
      |     ^~~~~
Language: C++

#include<iostream>
using namespace std;

int64_t N, ans, div = 10;

int main() {
    cin >> N;
    if (N % 2 == 0) {
        while (div <= N) {
            ans += N / div;
            div *= 5;
        }
    }
    cout << ans << endl;
}

Compiler output:
a.cc:4:17: error: 'int64_t div' redeclared as different kind of entity
    4 | int64_t N, ans, div = 10;
      |                 ^~~
In file included from /usr/include/c++/14/cstdlib:79,
                 from /usr/include/c++/14/ext/string_conversions.h:43,
                 from /usr/include/c++/14/bits/basic_string.h:4154,
                 from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/stdlib.h:992:14: note: previous declaration 'div_t div(int, int)'
  992 | extern div_t div (int __numer, int __denom)
      |              ^~~
a.cc: In function 'int main()':
a.cc:9:20: error: invalid operands of types '<unresolved overloaded function type>' and 'int64_t' {aka 'long int'} to binary 'operator<='
    9 |         while (div <= N) {
      |                ~~~~^~~~
a.cc:10:22: error: invalid operands of types 'int64_t' {aka 'long int'} and '<unresolved overloaded function type>' to binary 'operator/'
   10 |             ans += N / div;
      |                    ~~^~~~~
a.cc:11:20: error: overloaded function with no contextual type information
   11 |             div *= 5;
      |                    ^