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

include<iostream>
using namespace std;
int main(){
  double a;
  cin>>a;
  double ans=(n+1)/2;
  ans=ans/a;
  cout<<ans<<endl;
  return 0;
}
  

Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include<iostream>
      | ^~~~~~~
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope
    5 |   cin>>a;
      |   ^~~
a.cc:6:15: error: 'n' was not declared in this scope
    6 |   double ans=(n+1)/2;
      |               ^
a.cc:8:3: error: 'cout' was not declared in this scope
    8 |   cout<<ans<<endl;
      |   ^~~~
a.cc:8:14: error: 'endl' was not declared in this scope
    8 |   cout<<ans<<endl;
      |              ^~~~
Language: C++

/*by freesteed*/
#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,n) for (int i=a;i<n;i++)
#define pb push_back
#define fill(x,c) memset(x,c,sizeof(x))
#define fi first
#define se second
#define sz(A) (int)(A.size())
#define all(x) (x).begin(),(x).end()
#define caset int ___T; cin>>___T; for(int cs=1;cs<=___T;cs++)
#define get_be(c,x) (lower_bound(c.begin(),c.end(),x)-c.begin())
//get_be biger & equal
typedef long long ll;
typedef pair<int,int> PII;
typedef vector<int> VI;
const ll mod=1e9+7;
const ll oo=1e9+10;
const int Max = 1e6+10;
ll powmod(ll a,ll b) {ll res=1;a%=mod; assert(b>=0); for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;}
//ll a[Max];
double n,m;
//SUN, MON, TUE, WED, THU, FRI, or SAT.
void solve(){
	cin>>n;
	if(n&1){
		cout<<((n+1)/2)/n;
	}else{
		cout<<0.5;
	}
}
int main() {
	ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
	//caset{
		solve();
	//}
  	return 0;
}





Compiler output:
a.cc: In function 'void solve()':
a.cc:26:13: error: invalid operands of types 'double' and 'int' to binary 'operator&'
   26 |         if(n&1){
      |            ~^~
      |            | |
      |            | int
      |            double
Language: C++

#include <iostream>
 
using namespace std;
int main() {
  int n;
  cin >> n;
  int nodds = (n + 1) / 2;
  cout << setprecision(10) << (double)nodds / n;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:11: error: 'setprecision' was not declared in this scope
    8 |   cout << setprecision(10) << (double)nodds / n;
      |           ^~~~~~~~~~~~
a.cc:2:1: note: 'std::setprecision' is defined in header '<iomanip>'; this is probably fixable by adding '#include <iomanip>'
    1 | #include <iostream>
  +++ |+#include <iomanip>
    2 |
Language: C++

#include <iostream>

int main() {
  int n;
  cin >> n;
  int nodds = (n + 1) / 2;
  cout << setprecision(10) << (double)nodds / n;
}

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:7:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |   cout << setprecision(10) << (double)nodds / n;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:7:11: error: 'setprecision' was not declared in this scope
    7 |   cout << setprecision(10) << (double)nodds / n;
      |           ^~~~~~~~~~~~
Language: C++

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

int main() {
  int N;
  cin >> N; 
  double ans;
  
  if (N % 2 = 0) {
    ans = 1 / 2;
  }
  else {
    ans = (N + 1) / (N * 2);
  }
    cout << ans << endl;
  
}








Compiler output:
a.cc: In function 'int main()':
a.cc:9:9: error: lvalue required as left operand of assignment
    9 |   if (N % 2 = 0) {
      |       ~~^~~
Language: C

#inclue<stdio.h>
int main(void){
int n;
  scanf("%d",&n);
  if(n==1)printf("1.0000000000");
  else if(n%2==0)printf("0.5000000000");
  else printf("0.6000000000");
  return 0;
}


Compiler output:
main.c:1:2: error: invalid preprocessing directive #inclue; did you mean #include?
    1 | #inclue<stdio.h>
      |  ^~~~~~
      |  include
main.c: In function 'main':
main.c:4:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    4 |   scanf("%d",&n);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | #inclue<stdio.h>
main.c:4:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    4 |   scanf("%d",&n);
      |   ^~~~~
main.c:4:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:5:11: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    5 |   if(n==1)printf("1.0000000000");
      |           ^~~~~~
main.c:5:11: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:5:11: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:5:11: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:6:18: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
    6 |   else if(n%2==0)printf("0.5000000000");
      |                  ^~~~~~
main.c:6:18: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:7:8: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
    7 |   else printf("0.6000000000");
      |        ^~~~~~
main.c:7:8: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C

#inclue<stdio.h>
int main(void){
int n;
  scanf("%d",&n);
  if(n%2==0)printf("0.5000000000");
  else printf("0.6000000000");
  return 0;
}


Compiler output:
main.c:1:2: error: invalid preprocessing directive #inclue; did you mean #include?
    1 | #inclue<stdio.h>
      |  ^~~~~~
      |  include
main.c: In function 'main':
main.c:4:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    4 |   scanf("%d",&n);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | #inclue<stdio.h>
main.c:4:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    4 |   scanf("%d",&n);
      |   ^~~~~
main.c:4:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:5:13: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    5 |   if(n%2==0)printf("0.5000000000");
      |             ^~~~~~
main.c:5:13: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:5:13: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:5:13: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:6:8: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
    6 |   else printf("0.6000000000");
      |        ^~~~~~
main.c:6:8: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C++

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

int main(){
  cin.tie(0);
  ios::sync_with_stdio(false);
  double n; cin>>n;
  if(n%2==1) cout<<(n/2+1)/n<<endl;
  else cout<<0.5<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:7: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    9 |   if(n%2==1) cout<<(n/2+1)/n<<endl;
      |      ~^~
      |      | |
      |      | int
      |      double
Language: C++

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

int main(){
  cin.tie(0);
  ios::sync_with_stdio(false);
  double n; cin>>n;
  if(n%2) cout<<(n/2+1)/n<<endl;
  else cout<<0.5<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:7: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    9 |   if(n%2) cout<<(n/2+1)/n<<endl;
      |      ~^~
      |      | |
      |      | int
      |      double
Language: C++

#include <bits/stdc++.h>
#include<vector>
using namespace std;
#define lp(i, n)        for(int i=0; i<(int)(n); ++i)
int main() {
  double a,b;
  cin>>a;
  b=a/2;
  if(a%2==0){
    cout<<0.5000000000;
  }
  else{
    cout<<a/b;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:7: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    9 |   if(a%2==0){
      |      ~^~
      |      | |
      |      | int
      |      double
Language: C++

#include <bits/stdc++.h>
#include <math.h>
#define REP(i, n) for(int i = 0; i < (n); i++)
#define ALL(v) (v).begin(), (v).end()
using namespace std;
typedef long long ll;
typedef pair<int, int> P;
const int INF = 1001001001;
const int mINF = -1001001001;


int main() {
double a;
cin >> a;
if((int)a%2==0) {
  cout << "0.5" << endl;
} else {
  cout << (a+1)/2a << endl;
}
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:18:17: error: unable to find numeric literal operator 'operator""a'
   18 |   cout << (a+1)/2a << endl;
      |                 ^~
Language: C++

#include <bits/stdc++.h>
#include <math.h>
#define REP(i, n) for(int i = 0; i < (n); i++)
#define ALL(v) (v).begin(), (v).end()
using namespace std;
typedef long long ll;
typedef pair<int, int> P;
const int INF = 1001001001;
const int mINF = -1001001001;


int main() {
double a;
cin >> a;
if((double)a%2==0) {
  cout << "0.5" << endl;
} else {
  cout << (a+1)/2a << endl;
}
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:13: error: invalid operands of types 'double' and 'int' to binary 'operator%'
   15 | if((double)a%2==0) {
      |    ~~~~~~~~~^~
      |    |         |
      |    double    int
a.cc:18:17: error: unable to find numeric literal operator 'operator""a'
   18 |   cout << (a+1)/2a << endl;
      |                 ^~
Language: C++

#include <bits/stdc++.h>
#include <math.h>
#define REP(i, n) for(int i = 0; i < (n); i++)
#define ALL(v) (v).begin(), (v).end()
using namespace std;
typedef long long ll;
typedef pair<int, int> P;
const int INF = 1001001001;
const int mINF = -1001001001;


int main() {
double a;
cin >> a;
if(a%2==0) {
  cout << "0.5" << endl;
} else {
  cout << (a+1)/2a << endl;
}
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:5: error: invalid operands of types 'double' and 'int' to binary 'operator%'
   15 | if(a%2==0) {
      |    ~^~
      |    | |
      |    | int
      |    double
a.cc:18:17: error: unable to find numeric literal operator 'operator""a'
   18 |   cout << (a+1)/2a << endl;
      |                 ^~
Language: C++

#include<bits/stdc++.h>
using namespace std;
 
int main(){
  int N;
  cin>>N;
  double ans;
  if(N%2==0)ans=1/2;
  else {ans=(1/2)+(1/(2*N))};
  cout<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:28: error: expected ';' before '}' token
    9 |   else {ans=(1/2)+(1/(2*N))};
      |                            ^
      |                            ;
Language: C++

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

#define for0(i, n) for (ll i = 0; i < (ll)(n); ++i) // 0 based indexing
#define for1(i, n) for (ll i = 1; i <= (ll)(n); ++i) // 1 based indexing
#define forc(i, l, r) for (ll i = (ll)(l); i <= (ll)(r); ++i) // closed interver from l to r r inclusive
#define forr0(i, n) for (ll i = (ll)(n) - 1; i >= 0; --i) // reverse 0 based.
#define forr1(i, n) for (ll i = (ll)(n); i >= 1; --i) // reverse 1 based

#define ff first
#define ss second
#define pb push_back

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	ld n;
   cin >> n;
  if(n%2 == 1) cout << ((ll)n/2+1)/n << endl;
  else cout << ".5000000"<< endl;
	
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:22:7: error: invalid operands of types 'ld' {aka 'double'} and 'int' to binary 'operator%'
   22 |   if(n%2 == 1) cout << ((ll)n/2+1)/n << endl;
      |      ~^~
      |      | |
      |      | int
      |      ld {aka double}
Language: C++

#include <iostream>
#include <iomanip>
#include <cmath>
using namespace std;

int main() {
  cout << fixed << setprecision(10);
  double n;
  cin >> n;
  if(fmod(x, y) == 0) {
    cout << 0.5;
  } else {
    cout << (n / 2 + 1) / n;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:11: error: 'x' was not declared in this scope
   10 |   if(fmod(x, y) == 0) {
      |           ^
a.cc:10:14: error: 'y' was not declared in this scope
   10 |   if(fmod(x, y) == 0) {
      |              ^
Language: C++

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

int main() {
  cout << fixed << setprecision(10);
  double n;
  cin >> n;
  if(n % 2 == 0) {
    cout << 0.5;
  } else {
    cout << (n / 2 + 1) / n;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:8: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    9 |   if(n % 2 == 0) {
      |      ~ ^ ~
      |      |   |
      |      |   int
      |      double
Language: Java

import java.util.Scanner;
class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    if(a % 2 == 0){
      System.out.println(1/2.0);
    }else{
      System.out.println(((n+1)/2.0)/n);
    }
  }
}

Compiler output:
Main.java:6: error: cannot find symbol
    if(a % 2 == 0){
       ^
  symbol:   variable a
  location: class Main
1 error
Language: Java

import java.util.Scanner;
class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    if(a % 2 == 0){
      System.out.println(1/2.0);
    }else{
      System.out.println(((n+1)/2.0)/n);
    }
  }
}

Compiler output:
Main.java:9: error: cannot find symbol
      System.out.println(((n+1)/2.0)/n);
                           ^
  symbol:   variable n
  location: class Main
Main.java:9: error: cannot find symbol
      System.out.println(((n+1)/2.0)/n);
                                     ^
  symbol:   variable n
  location: class Main
2 errors
Language: Java

import java.util.*;

class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		System.out.println((double)((n+1)/2)/n);
	}
}

Compiler output:
Main.java:7: error: cannot find symbol
		System.out.println((double)((n+1)/2)/n);
		                             ^
  symbol:   variable n
  location: class Main
Main.java:7: error: cannot find symbol
		System.out.println((double)((n+1)/2)/n);
		                                     ^
  symbol:   variable n
  location: class Main
2 errors
Language: C++

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

int main() {
    double N;
    cin >> N;
    if (N % 2 == 0) cout << setprecision(10) << (N / 2) / N << endl;
    else cout << setprecision(10) << ((N + 1) / 2) / N << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:11: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    7 |     if (N % 2 == 0) cout << setprecision(10) << (N / 2) / N << endl;
      |         ~ ^ ~
      |         |   |
      |         |   int
      |         double
Language: C++

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

int main() {
  double a;
  cin>>a;
  cout<<(a&2==0 ? 0.5:(a+1)/2*a);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:11: error: invalid operands of types 'double' and 'bool' to binary 'operator&'
    8 |   cout<<(a&2==0 ? 0.5:(a+1)/2*a);
      |          ~^~~~~
      |          |  |
      |          |  bool
      |          double
Language: C++

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

int main() {
  int N;
  cin >> N;
  
  int odd = 0;
  
  if (N % 2 = 1){
    odd = N / 2 + 1;
    cout << (double) odd / N << endl;
  }
  else {
    odd = N / 2;
    cout << (double) odd / N << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:9: error: lvalue required as left operand of assignment
   10 |   if (N % 2 = 1){
      |       ~~^~~
Language: C++

#include<bits/stdc++.h>
using na,espace std;

int main(){
  int N;
  cin >> N;
  cout << (N + 1) / 2 << endl;
}

Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'na'
    2 | using na,espace std;
      |       ^~
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |   cin >> N;
      |   ^~~
      |   std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:7:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |   cout << (N + 1) / 2 << 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:7:26: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    7 |   cout << (N + 1) / 2 << endl;
      |                          ^~~~
      |                          std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/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; cin >> n;
cout << (n+1)/2/n;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:8: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 | int n; 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:6:1: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    6 | cout << (n+1)/2/n;
      | ^~~~
      | std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++

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

int main(){
  int N;
  int o=(N-1)/2+1;
  printf("%lf\n",(double)o/(double)N));
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:38: error: expected ';' before ')' token
    7 |   printf("%lf\n",(double)o/(double)N));
      |                                      ^
      |                                      ;
Language: C

#include <stdio.h>
int main(void){
	float a;
	scanf("%f",&a);
	if(a%2==0)printf("0.5");
	else printf("%f",(a+1)/2/a);
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:13: error: invalid operands to binary % (have 'float' and 'int')
    5 |         if(a%2==0)printf("0.5");
      |             ^
Language: C++

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

ll gcd(ll x,ll y){
    if(!x)return y;
    else return gcd(y%x,x);
}
int main(){
    ll a,b;cin>>a>>b;
    ll g=gcd(a,b);
    ll ans=1;
    for(ll i=2;i*i<=g;i++){
        if(g%i==0){
            ans++;
            while(g%i==0)g/=i;
        }
    if(g>1)ans++;
    cout<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:21:2: error: expected '}' at end of input
   21 | }
      |  ^
a.cc:10:11: note: to match this '{'
   10 | int main(){
      |           ^
Language: Java

import java.math.BigDecimal;
import java.util.Scanner;

public class Main {
    public static void main(String[] c) {
        Scanner scan = new Scanner(System.in);
        double t = scan.nextInt();
        double half = 2;
        double s = t % half;
        if (s == 0) {
            System.out.println(new BigDecimal((t / half) / t).setScale(6));
        } else {
            double v = Math.ceil(t / half);
            System.out.println(new BigDecimal(v / t).setScale(6, BigDecimal.ROUND_HALF_UP));
        }
    }

Compiler output:
Main.java:16: error: reached end of file while parsing
    }
     ^
1 error
Language: C++

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

  int main() {
    int N;
    cin >> N;
    int a;
    double b;

    if(N%2==0){
      b=1/2;
      cout << b << endl;
      ]

    else{
      b=(N+1)/2*N;
      cout << b << endl;
    } 

Compiler output:
a.cc: In function 'int main()':
a.cc:13:7: error: expected primary-expression before ']' token
   13 |       ]
      |       ^
a.cc:18:6: error: expected '}' at end of input
   18 |     }
      |      ^
a.cc:10:15: note: to match this '{'
   10 |     if(N%2==0){
      |               ^
a.cc:18:6: error: expected '}' at end of input
   18 |     }
      |      ^
a.cc:4:14: note: to match this '{'
    4 |   int main() {
      |              ^
Language: C++

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

bool IsPrime(ll num)
{
    if (num < 2) return false;
    else if (num == 2) return true;
    else if (num % 2 == 0) return false; // 偶数はあらかじめ除く

    double sqrtNum = sqrt(num);
    for (int i = 3; i <= sqrtNum; i += 2)
    {
        if (num % i == 0)
        {
            // 素数ではない
            return false;
        }
    }

    // 素数である
    return true;
}
int main()
{
    ll A, B, C;
    ll count = 1;
    cin >> A >> B;
    C = min(A, B);
    for (int i = 1; i < = sqrt(C); i++)
    {
        if (A % i == 0 && B % i == 0)
        {
            if (IsPrime(i))
                count++;
        }
    }
    cout << count << endl;
    return 0;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:31:25: error: expected primary-expression before '=' token
   31 |     for (int i = 1; i < = sqrt(C); i++)
      |                         ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  int n;cin>>n;
  double m=n;
  if(n%2==0)printf("0.5\n");
  else printf("%lf\n",(m+1)/2/m));
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:33: error: expected ';' before ')' token
    7 |   else printf("%lf\n",(m+1)/2/m));
      |                                 ^
      |                                 ;
Language: C++

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

int main() {
  int N;
  cin>>N;
  double k = N/2.0-((N%2)*0.5);
  double ans =1.0-k/N
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:1: error: expected ',' or ';' before '}' token
    9 | }
      | ^
Language: Java

int N;
void _main() {
    cin >> N;
    int cnt = (N + 1) / 2;
    double ans = 1.0 * cnt / N;
    printf("%.10f\n", ans);
}

Compiler output:
Main.java:1: error: unnamed classes are a preview feature and are disabled by default.
int N;
^
  (use --enable-preview to enable unnamed classes)
Main.java:3: error: not a statement
    cin >> N;
        ^
2 errors
Language: Java

int N;
//---------------------------------------------------------------------------------------------------
void _main() {
    cin >> N;
    int cnt = (N + 1) / 2;
    double ans = 1.0 * cnt / N;
    printf("%.10f\n", ans);
}

Compiler output:
Main.java:1: error: unnamed classes are a preview feature and are disabled by default.
int N;
^
  (use --enable-preview to enable unnamed classes)
Main.java:4: error: not a statement
    cin >> N;
        ^
2 errors
Language: C++

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

int main() {
  double n;
  cin >> n;
  if(n%2 == 0) cout << 0.5 << endl;
  else {
    cout << fixed << setprecision(10);
    cout << (n+1)/2/n << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:7: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    7 |   if(n%2 == 0) cout << 0.5 << endl;
      |      ~^~
      |      | |
      |      | int
      |      double
Language: C++

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

int main() {
	double n;
    cin >> n;
    if(n%2 == 0){
      cout << 0.5000000000 << endl;
    }
    else{
      cout << (n+1)/2*n << endl;
    }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    7 |     if(n%2 == 0){
      |        ~^~
      |        | |
      |        | int
      |        double
Language: C++

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

int main() {
  double a;
  cin>>a;
  cout<<(double)(a/2+a%2)/(double)a<<endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:23: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    9 |   cout<<(double)(a/2+a%2)/(double)a<<endl;
      |                      ~^~
      |                      | |
      |                      | int
      |                      double
Language: C++

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

int main() {
  double a;
  cin>>a;
  cout<<(double)(a/2.0+a%2)/a<<endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:25: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    9 |   cout<<(double)(a/2.0+a%2)/a<<endl;
      |                        ~^~
      |                        | |
      |                        | int
      |                        double
Language: C++

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

int main() {
  double a;
  cin>>a;
  cout<<(a/2.0+(double)(a%2.0))/a<<endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:26: error: invalid operands of types 'double' and 'double' to binary 'operator%'
    9 |   cout<<(a/2.0+(double)(a%2.0))/a<<endl;
      |                         ~^~~~
      |                         | |
      |                         | double
      |                         double
Language: C++

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

void solve{
double n;
cin >> n;
if (n%2==0){cout << "0.5";}
else cout << (n+1)/2/n;
}

Compiler output:
a.cc:6:6: error: variable or field 'solve' declared void
    6 | void solve{
      |      ^~~~~
a.cc:7:1: error: expected primary-expression before 'double'
    7 | double n;
      | ^~~~~~
a.cc:7:1: error: expected '}' before 'double'
a.cc:6:11: note: to match this '{'
    6 | void solve{
      |           ^
a.cc:8:1: error: 'cin' does not name a type
    8 | cin >> n;
      | ^~~
a.cc:9:1: error: expected unqualified-id before 'if'
    9 | if (n%2==0){cout << "0.5";}
      | ^~
a.cc:10:1: error: expected unqualified-id before 'else'
   10 | else cout << (n+1)/2/n;
      | ^~~~
a.cc:11:1: error: expected declaration before '}' token
   11 | }
      | ^
Language: C++

#include <iostream>
#include <iomanip>
#include <utility>
#include <cmath>
#include <random>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <stack>
#include <string>
#include <algorithm>
using namespace std;

#define rep(i,n) for(int i = 0; i<n; ++i)
const int INF = 100100100;
const int MOD = (int)1e9 + 7;
typedef long long ll;

int main(){
    double n; cin >> n;
    cout << setprecision(15) << (n/2 + n%2)/n << endl; return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:22:41: error: invalid operands of types 'double' and 'int' to binary 'operator%'
   22 |     cout << setprecision(15) << (n/2 + n%2)/n << endl; return 0;
      |                                        ~^~
      |                                        | |
      |                                        | int
      |                                        double
Language: C++

nclude<iostream>
#include<stdio.h>
using namespace std;
int main(){
  int a,b;
  cin >> a >> b;
  double n,m;
  if(a%2==0){
    b=a/2;
  }
  else{
    b=a/2+1;
  }
  n=a,m=b;
  printf("%lf\n",m/n);
}

Compiler output:
a.cc:1:1: error: 'nclude' does not name a type
    1 | nclude<iostream>
      | ^~~~~~
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope
    6 |   cin >> a >> b;
      |   ^~~
a.cc:3:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    2 | #include<stdio.h>
  +++ |+#include <iostream>
    3 | using namespace std;
a.cc:15:3: error: 'printf' was not declared in this scope
   15 |   printf("%lf\n",m/n);
      |   ^~~~~~
a.cc:3:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
    2 | #include<stdio.h>
  +++ |+#include <cstdio>
    3 | using namespace std;
Language: C++

#include<iostream>
#include<stdio.h>
using namespace std;
int a,b;
double n;
cin >> a;
a=n;
b=n-a%2==;
  cout << n/b <<endl;
}

Compiler output:
a.cc:6:1: error: 'cin' does not name a type
    6 | cin >> a;
      | ^~~
a.cc:7:1: error: 'a' does not name a type
    7 | a=n;
      | ^
a.cc:8:1: error: 'b' does not name a type
    8 | b=n-a%2==;
      | ^
a.cc:9:3: error: 'cout' does not name a type
    9 |   cout << n/b <<endl;
      |   ^~~~
a.cc:10:1: error: expected declaration before '}' token
   10 | }
      | ^
Language: C++

#include<iostream>
#include<stdio.h>
using namespace std;
int a;
double n;
cin >> a;
a=n;
  cout << n/n-(a%2==)<<endl;
return 0;
}

Compiler output:
a.cc:6:1: error: 'cin' does not name a type
    6 | cin >> a;
      | ^~~
a.cc:7:1: error: 'a' does not name a type
    7 | a=n;
      | ^
a.cc:8:3: error: 'cout' does not name a type
    8 |   cout << n/n-(a%2==)<<endl;
      |   ^~~~
a.cc:9:1: error: expected unqualified-id before 'return'
    9 | return 0;
      | ^~~~~~
a.cc:10:1: error: expected declaration before '}' token
   10 | }
      | ^
Language: C++

#include<iostream>
#include<stdio.h>
using namespace std;
int a;
double n;
cin >> a;
a=n;
  cout << n/n-(a%2==)<<endl;

Compiler output:
a.cc:6:1: error: 'cin' does not name a type
    6 | cin >> a;
      | ^~~
a.cc:7:1: error: 'a' does not name a type
    7 | a=n;
      | ^
a.cc:8:3: error: 'cout' does not name a type
    8 |   cout << n/n-(a%2==)<<endl;
      |   ^~~~
Language: C++

#include<iostream>
#include<stdio.h>
using namespace std;
int main(){
  int n;
  double a,b;
  cin >> n;
  if(m%2==0){
    m=n/2;
  }
  else{
    m=n/2+1;
  }
  a=n;
  b=m;
  printf("%lf\n",b/a)
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:6: error: 'm' was not declared in this scope
    8 |   if(m%2==0){
      |      ^
a.cc:15:5: error: 'm' was not declared in this scope
   15 |   b=m;
      |     ^
a.cc:16:22: error: expected ';' before '}' token
   16 |   printf("%lf\n",b/a)
      |                      ^
      |                      ;
   17 | }
      | ~
Language: C++

#include<iostream>
using namespace std;
int main(){
  int n;
  double w,a,b;
  cin >> n;
  if(m%2==0){
    m=n/2;
  }
  else{
    m=n/2+1;
  }
  a=n;
  b=m;
  w=b/a;
  cout << w << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:6: error: 'm' was not declared in this scope
    7 |   if(m%2==0){
      |      ^
a.cc:14:5: error: 'm' was not declared in this scope
   14 |   b=m;
      |     ^
Language: C++

#include<iostream>
using namespace std;
int main(){
  int 
  double w,n,a;
  cin >> n;
  if(n%2==0){
    a=n/2;
  }
  else{
    m=n/2+1;
  }
  w=m/n;
  cout << w << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:3: error: two or more data types in declaration of 'w'
    4 |   int
      |   ^~~
a.cc:4:3: error: two or more data types in declaration of 'n'
a.cc:4:3: error: two or more data types in declaration of 'a'
a.cc:6:10: error: 'n' was not declared in this scope
    6 |   cin >> n;
      |          ^
a.cc:8:5: error: 'a' was not declared in this scope
    8 |     a=n/2;
      |     ^
a.cc:11:5: error: 'm' was not declared in this scope; did you mean 'tm'?
   11 |     m=n/2+1;
      |     ^
      |     tm
a.cc:13:3: error: 'w' was not declared in this scope
   13 |   w=m/n;
      |   ^
a.cc:13:5: error: 'm' was not declared in this scope; did you mean 'tm'?
   13 |   w=m/n;
      |     ^
      |     tm
Language: C++

#include<iostream>
using namespace std;
int main()
{
  double N;
  cin >> N;
  
  if(N % 2 == 0){
    cout << "0.5";
  }else{
    cout << (N+1)/(2*N);
  }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:8: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    8 |   if(N % 2 == 0){
      |      ~ ^ ~
      |      |   |
      |      |   int
      |      double
Language: C++

#include<iostream>
using namespace std;
int main()
{
  double N;
  cin >> N;
  
  if(N ％ 2 == 0){
    cout << "0.5";
  }else{
    cout << (N+1)/(2*N);
  }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:7: error: expected ')' before '\U0000ff05'
    8 |   if(N ％ 2 == 0){
      |     ~ ^~~
      |       )
Language: C++

#include<iostream>
using namespace std;
int main()
{
  double N;
  cin >> N;
  
  if ( N ％ 2 == 0){
    cout << "0.5";
  }else{
    cout << (N+1)/(2*N);
  }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: expected ')' before '\U0000ff05'
    8 |   if ( N ％ 2 == 0){
      |      ~  ^~~
      |         )
Language: C++

#include<iostream>
using namespace std;
int main()
{
  double N;
  cin >> N;
  
  if(N％2==0){
  	cout << "0.5";
  }else{
    cout << (N+1)/(2*N);
  }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:6: error: 'N\U0000ff052' was not declared in this scope
    8 |   if(N％2==0){
      |      ^~~~
Language: C++

#include<iostream>
using namespace std;
int main()
{
  double N;
  cin >> N ;
  
  if(N％2=0){
  cout << "0.5";
  }else{
    cout << (N+1)/(2*N);
  }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:6: error: 'N\U0000ff052' was not declared in this scope
    8 |   if(N％2=0){
      |      ^~~~
Language: C++

#include<iostream>
using namespace std;
int main()
{
  double N;
  cin >> N ;
  
  if(N％2=0){
  cout << "0.5";
  }else{
    cout << "(N+1)/2*N" ;
  }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:6: error: 'N\U0000ff052' was not declared in this scope
    8 |   if(N％2=0){
      |      ^~~~
Language: C++

#include<iostream>
using namespace std;
int main()
{
  double N;
  double a;
  cin >> N >> a;
  
  if(N％2=0){
  cout << "0.5";
  }else{
    cout << "(N+1)/2*N" ;
  }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:6: error: 'N\U0000ff052' was not declared in this scope
    9 |   if(N％2=0){
      |      ^~~~
Language: C++

#include<iostream>
using namespace std;
int main()
{
  double N;
  double a;
  cin >> N >> a;
  
  if(N％2=0){
  cout << "0.5";
  }else{
    cout << (N+1)/2*N ;
  }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:6: error: 'N\U0000ff052' was not declared in this scope
    9 |   if(N％2=0){
      |      ^~~~
Language: C++

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

#define rep(i, n) for (int i = 0; i < (int)(n); i++)
template<class T> inline bool chmax(T& a, T b) {
  if (a < b) {
    a = b;
    return 1;
  }
  return 0;
}
template<class T> inline bool chmin(T& a, T b) {
  if (a > b) {
    a = b;
    return 1;
  }
  return 0;
}
int64_t abs(int64_t n) {
  if (n < 0) {
    n = -n;
  }
  return n;
}
int ctoi(char c) {
  if (c >= '0' && c <= '9') {
    return c - '0';
  }
  return 0;
}

int main() {
  double n;
  cin >> n;
  double ans;
  if (n%2 == 0) {
    ans = (n/2)/n;
  } else {
    ans = ((n+1)/2)/n;
  }
  cout << fixed << setprecision(10);
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:36:8: error: invalid operands of types 'double' and 'int' to binary 'operator%'
   36 |   if (n%2 == 0) {
      |       ~^~
      |       | |
      |       | int
      |       double
Language: C++

#include<iostream>
using namespace std;

int main(){
  long long N;
  cin >> N;
  
  if(N%2==0)
    cout << 1/2 < nedl;
  else
    cout << (N/2+1)/N << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:19: error: 'nedl' was not declared in this scope
    9 |     cout << 1/2 < nedl;
      |                   ^~~~
Language: C

#include <stdio.h>
 
int main(void)
{
  int n, f;
  double r=0;
  
  scanf("%d", &n);
  
  if (n%2==0) 
    r = 0.5:
  else {
    f = n/2+1;
    r = (double)(n-f)/n;
  }
  
  printf("%f", r);
  
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:11:12: error: expected ';' before ':' token
   11 |     r = 0.5:
      |            ^
      |            ;
Language: C

#include <stdio.h>

int main(void)
{
  int n;
  double r=0;
  
  scanf("%d", &n);
  
  if (n%2==0) 
    r = 0.5:
  else
    r = (n/2)/(n/2+1.0);
  
  printf("%f", r);
  
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:11:12: error: expected ';' before ':' token
   11 |     r = 0.5:
      |            ^
      |            ;
Language: C++

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

main(){
  int N;
  double a;
  cin >> N;
  if(N%2 ==0){cout << 0.5000000000 << endl;}
  else{cout <<((double)N + 1) / 2 <<endl;}
  return 0
}


Compiler output:
a.cc:4:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    4 | main(){
      | ^~~~
a.cc: In function 'int main()':
a.cc:10:11: error: expected ';' before '}' token
   10 |   return 0
      |           ^
      |           ;
   11 | }
      | ~
Language: C++

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

main(){
  int N;
  double a;
  cin >> N;
  if(N%2 =0){cout << 0.5000000000 << endl;}
  else{cout <<((double)N + 1) / 2 <<endl;}
  return 0
}

Compiler output:
a.cc:4:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    4 | main(){
      | ^~~~
a.cc: In function 'int main()':
a.cc:8:7: error: lvalue required as left operand of assignment
    8 |   if(N%2 =0){cout << 0.5000000000 << endl;}
      |      ~^~
a.cc:10:11: error: expected ';' before '}' token
   10 |   return 0
      |           ^
      |           ;
   11 | }
      | ~
Language: C++

#include<iostream>
using namespace std;
int main(){
	int n;
  	double s;
  	cin >> n;
  	s=(n/2);
  	if(s%2!=0)
      	s++;
  	s=1.0*s/n;
  	cout << s << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:13: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    8 |         if(s%2!=0)
      |            ~^~
      |            | |
      |            | int
      |            double
Language: C++

#include <bits/stdc++.h>
#define FOR(i, a, b) for (int i = (a); i <= (b); i++)
#define RFOR(i, a, b) for (int i = (a); i >= (b); i--)
#define LFOR(i, a, b) for (long long int i = (a); i <= (b); i++)
#define LRFOR(i, a, b) for (long long int i = (a); i >= (b); i--)
#define MOD 1000000007
#define INF 1000000000           // 2000000000
#define LINF 1000000000000000000 // 9000000000000000000
#define DINF 1000000000000000.0
#define PI 3.14159265358979

//.size()はunsigned int　0-1をするとオーバーフローする

using namespace std;
typedef long long int ll;
typedef pair<long long int, long long int> P;

int dy[5] = {-1, 0, 1, 0, 0};
int dx[5] = {0, -1, 0, 1, 0};

int main(void) {
    int n;

    cin>>n;

    if(n%2=0){
        printf("%.10lf",0.5);
    }else{
        printf("%.10lf",(double)(n+1)/n);
    }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:26:9: error: lvalue required as left operand of assignment
   26 |     if(n%2=0){
      |        ~^~
Language: C++

#include <iostream>
using namespace std;
int main(void){
    // Your code here!
    double n;
    cin>>n;
    if(n%2==0){
        cout<<(n/2)/n<<endl;
    }
    
    else if(n%2!=0){
        cout<<((n+1)/2)/n<<endl;
    }
    
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    7 |     if(n%2==0){
      |        ~^~
      |        | |
      |        | int
      |        double
a.cc:11:14: error: invalid operands of types 'double' and 'int' to binary 'operator%'
   11 |     else if(n%2!=0){
      |             ~^~
      |             | |
      |             | int
      |             double
Language: Java

import java.util.*;

class Main
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);
    double N = sc.nextDouble();

    int a = N%2;
    double b;

    if(a == 0){
       b = N/(2*N);
    }
    else{
       b = (N+1)/(2*N);
    }
    
    System.out.println(String.format("%.10f",b));

  }
}

Compiler output:
Main.java:10: error: incompatible types: possible lossy conversion from double to int
    int a = N%2;
             ^
1 error
Language: Java

import java.util.*;

class Main
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();

    int a = N%2;
    double b;

    if(a == 0){
       b = 0.5;
    }
    else{
       b = ((1+N)/2)/N;
    }
    
    System.out.println(String.format(b);

  }
}

Compiler output:
Main.java:20: error: ')' or ',' expected
    System.out.println(String.format(b);
                                       ^
1 error
Language: Java

import java.util.*;

class Main
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();

    int a = N%2;
    int b = 0;

    if(a == 0){
       b = 0.5;
    }
    else{
       b = (1+N)/2*N;
    }
    
    System.out.println(b);

  }
}

Compiler output:
Main.java:14: error: incompatible types: possible lossy conversion from double to int
       b = 0.5;
           ^
1 error
Language: Java

import java.util.*;

class Main
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();

    int a = N%2;
    int b = 0;

    if(a == 0){
      int b = 0.5;
    }
    if else{
      int b = (1+N)/2*N;
    }
    
    System.out.println(b);

  }
}

Compiler output:
Main.java:16: error: '(' expected
    if else{
      ^
Main.java:16: error: illegal start of expression
    if else{
       ^
2 errors
Language: Java

import java.util.*;

class Main
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();

    int a = N%2;
    int b = 0;

    if(a == 0){
      int b = 0.5;
    }
    else if{
      int b = (1+N)/2*N;
    }
    
    System.out.println(b);

  }
}

Compiler output:
Main.java:16: error: '(' expected
    else if{
           ^
1 error
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  int n;
  cin >> n;
  if(n == 1){
    return n;
  }else if (n%2 == 0){
    cout << 0.5;
  }else{
    cout << 0.6;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:2: error: expected '}' at end of input
   12 | }
      |  ^
a.cc:3:11: note: to match this '{'
    3 | int main(){
      |           ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  int n;
  cin >> n;
  if(n == 1){
    return n;
  }else if (n%2 == 0){
    cout << 0.5
  }else{
    cout << 0.6;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:16: error: expected ';' before '}' token
    9 |     cout << 0.5
      |                ^
      |                ;
   10 |   }else{
      |   ~             
a.cc:12:2: error: expected '}' at end of input
   12 | }
      |  ^
a.cc:3:11: note: to match this '{'
    3 | int main(){
      |           ^
Language: C++

#include <iostream>
using namespace std ;

int main (){
	int n ;
  	cin >> n ;
  	if(n%2){
    	cout << fixed << setprecission(10) << ((n/2)+1)/n ;
    }else cout << fixed << setprecission(10) << (1/2) ;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:26: error: 'setprecission' was not declared in this scope
    8 |         cout << fixed << setprecission(10) << ((n/2)+1)/n ;
      |                          ^~~~~~~~~~~~~
a.cc:9:28: error: 'setprecission' was not declared in this scope
    9 |     }else cout << fixed << setprecission(10) << (1/2) ;
      |                            ^~~~~~~~~~~~~
Language: C++

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

int main() {
	double n;
	cin >> n;
	cout << fixed << setprecision(10) << (n%2==0?1/2:(n+1)/2/n) << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:48: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    7 |         cout << fixed << setprecision(10) << (n%2==0?1/2:(n+1)/2/n) << endl;
      |                                               ~^~
      |                                               | |
      |                                               | int
      |                                               double
Language: C++

#include <iostream>

using namespace std;

int main(){
    int n;
    if(){
        cout << (double)n / 2 / n << endl;
    }
    else{
        cout << (double)(n + 1) / 2 / n << endl;
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:8: error: expected primary-expression before ')' token
    7 |     if(){
      |        ^
Language: C++

#include <stdio.h>
int main(void){
  double N;
  printf("N:\n");
  scanf("%lf",&N);
  if(N%2==0){
    printf("%lf",N/2);
  }
  else{
    printf("%lf",(N-1)/2);
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:7: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    6 |   if(N%2==0){
      |      ~^~
      |      | |
      |      | int
      |      double
Language: C++

#include <stdio.h>
int main(void){
  double N;
  printf("N:\n");
  scanf("%lf",&N);
  if(N%2==0){
    printf("%il",N/2);
  }
  else{
    printf("%lf",(N-1)/2);
  }
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:7: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    6 |   if(N%2==0){
      |      ~^~
      |      | |
      |      | int
      |      double
Language: C++

int main()
{
	int N, O;
	double  answer;
	cin >> N;
	O = N / 2;
	O = N - O;
	answer = O / N;
	cout << answer;	
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: 'cin' was not declared in this scope
    5 |         cin >> N;
      |         ^~~
a.cc:9:9: error: 'cout' was not declared in this scope
    9 |         cout << answer;
      |         ^~~~
Language: C++

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

int main() {
	float a;
	cin >> a;
	if (a % 2 == 1) {
		cout << (a / 2 + 1) % a << endl;
	}
	else
		cout << (a / 2 ) % a << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:15: error: invalid operands of types 'float' and 'int' to binary 'operator%'
    8 |         if (a % 2 == 1) {
      |             ~ ^ ~
      |             |   |
      |             |   int
      |             float
a.cc:9:37: error: invalid operands of types 'float' and 'float' to binary 'operator%'
    9 |                 cout << (a / 2 + 1) % a << endl;
      |                         ~~~~~~~~~~~ ^ ~
      |                                |      |
      |                                float  float
a.cc:12:34: error: invalid operands of types 'float' and 'float' to binary 'operator%'
   12 |                 cout << (a / 2 ) % a << endl;
      |                         ~~~~~~~~ ^ ~
      |                            |       |
      |                            float   float
Language: C++

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

int main() {
	double a;
	cin >> a;
	if (a % 2.0 == 1) {
		cout << (a / 2 + 1) % a << endl;
	}
	else
		cout << (a / 2 ) % a << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:15: error: invalid operands of types 'double' and 'double' to binary 'operator%'
    8 |         if (a % 2.0 == 1) {
      |             ~ ^ ~~~
      |             |   |
      |             |   double
      |             double
a.cc:9:37: error: invalid operands of types 'double' and 'double' to binary 'operator%'
    9 |                 cout << (a / 2 + 1) % a << endl;
      |                         ~~~~~~~~~~~ ^ ~
      |                                |      |
      |                                double double
a.cc:12:34: error: invalid operands of types 'double' and 'double' to binary 'operator%'
   12 |                 cout << (a / 2 ) % a << endl;
      |                         ~~~~~~~~ ^ ~
      |                            |       |
      |                            double  double