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

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

int main() {
    int R;
    cin >> R;
    cout << 2 * M_PI * R << endl;
    return 0;
}

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

#include<bits/stdc++.h>
using namespace std;
int main()
{
    double r,c;
    cin>>r;
    c=2*3.141592654*r;
    printf("%.20f",c);
}


Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: Java

import java.util.Scanner;
public class Main{
	public static void main(String[] args){
      Scanner v = new Scanner(System.in);
      int x = v.nextInt();
      System.out.print(obseg(x));
    }
  public static int obseg(int x){
	return 2*3.1415*x;
  }
}


Compiler output:
Main.java:9: error: incompatible types: possible lossy conversion from double to int
	return 2*3.1415*x;
	               ^
1 error
Language: Java

import java.util.Scanner;
public class Main{
	public static void main(String[] args){
      Scanner v = new Scanner(System.in);
      int x = v.nextInt();
      System.out.print(obseg(x));
    }
  public static int obseg(int x){
	return 2*3.1415*x  
  }
}

Compiler output:
Main.java:9: error: ';' expected
	return 2*3.1415*x  
	                 ^
1 error
Language: C

#include<bits/stdc++.h>

typedef long long ll;

#define FOR(i,a,b) for(ll i=(a);i<(b);i++) // no semicoron
#define REP(i,n) for(ll i=0;i<(ll)(n);i++)
#define REPD(i,n) for(ll i=(ll)(n)-1;i>0;i--)
#define FORD(i,a,b) for(ll i=(a);i>(b);i--)
#define ALL(x) (x).begin(),(x).end() //sortなどの引数を省略したい
#define SIZE(x) ((ll)(x).size()) //sizeをsize_tからllに直しておく
//#define PI 3.14159265359

using namespace std;

int main(){
    double R;

    cin >> R;

    double dist = 2.0 * M_PI * R;

    cout << setprecision(20) << dist << endl;
}

Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

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

int main(){
  double pi = 3.14159265368979;
  int n;
  int ans=0;
  cin >> n;
  ans = 2*pi*n;
  cout << and << endl;

}


Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: Java

package common;

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		double R;
		double area;
		Scanner scanner = new Scanner(System.in);
		
		System.out.println("半径 ");
		R = scanner.nextDouble();
		
		area = R * 3.14 * 2;
		
		System.out.println("周長 " + area);
	}


Compiler output:
Main.java:17: error: reached end of file while parsing
	}
	 ^
1 error
Language: Java

package common;

import java.util.Scanner;

public class summerwork {
	public static void main(String[] args) {
		double R;
		double area;
		Scanner scanner = new Scanner(System.in);
		
		System.out.println("半径 ");
		R = scanner.nextDouble();
		
		area = R * 3.14 * 2;
		
		System.out.println("周長 " + area);
	}
}


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

#include <bits/stdc++.h>
using namespace std;
#define repr(i, a, b) for (int i = a; i < b; i++)
#define rep(i, n) for (int i = 0; i < n; i++)
typedef long long ll;
#define mod 1000000007

ll gcd(ll x,ll y) {return y ? gcd(y,x%y) : x;} 
ll lcm(ll x,ll y) {return x/gcd(x,y)*y;}

int main(){
    double n;
    cin >> n;
    printf("%.5lf",2*n*3.1415926);

    return 0;
}

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: Java

#import java.util.*;
public static class circle
{
public static void main(String args[])
{
Scanner sc= new Scanner(System.in);
int r = sc.nextInt();
System.out.println(r*r*3.14);
}
}

Compiler output:
Main.java:1: error: illegal character: '#'
#import java.util.*;
^
Main.java:1: error: class, interface, enum, or record expected
#import java.util.*;
        ^
2 errors
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
 
  int R;
 cin >> R;
  // nameに10を代入
  cout << R*3.1415926535*2
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:27: error: expected ';' before '}' token
    9 |   cout << R*3.1415926535*2
      |                           ^
      |                           ;
   10 | }
      | ~
Language: C


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

  int main() {
    double R;
    cin >> R;
    cout << 6.28*R;
  }

Compiler output:
main.c:2:12: fatal error: bits/stdc++.h: No such file or directory
    2 |   #include <bits/stdc++.h>
      |            ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

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

int main() {
  double R;
  cin >> R;
  cout << 6.28*R;
}

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

#include <iostream>
using namespace std;
using ll = long long;
 
int main() {
cout<<fixed<<setprecision(10);

  int R;
  cin >>R;
  cout << 3.141592653*2.0*R;

	
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:14: error: 'setprecision' was not declared in this scope
    6 | cout<<fixed<<setprecision(10);
      |              ^~~~~~~~~~~~
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 | using namespace std;
Language: C

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define ull unsigned long long
#define dl double long
const int INF=0x3fffffff;
const ll MOD=1000000007;
const ll MODD=998244353;
#define rrep(i,n) for(ll i=(ll)(n)-1;i>=0;i--)
#define REP(i,m,n) for(ll i=(ll)(m);i<(ll)(n);i++)
#define rep(i,n) REP(i,0,n)
template<typename T> bool chmax(T &m, const T q) { if (m < q) {m = q; return true;} else return false; }
template<typename T> bool chmin(T &m, const T q) { if (m > q) {m = q; return true;} else return false; }

int main()
{
  dl R;
  cin >> R;
  cout << 2*3.14*R << "\n";
}

Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

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

int main(){
  int r;
  cin >> r;
  cout << r * 3.1415926535;
}

Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

#include<bits/stdc++.h>
#define ll long long
const int N=100005;
using namespace std;
double r;
int main(){
    cin>>r;
    cout<<2*3.14*r;
    return 0;
}

Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

#include<bits/stdc++.h>
#define ll long long
const int N=100005;
using namespace std;
double r;
int main(){
    cin>>r;
    cout<<2*3.14*r;
}

Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

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

int main(){
  int n;
  cin>>n;
  cout<<n*2*3.141592<<endl;
  return 0;
}

Compiler output:
a.cc:1:9: fatal error: bits/stdc++h.: No such file or directory
    1 | #include<bits/stdc++h.>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

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

int main() {
    double r, ans;
    cin >> r;
    ans = 2.0 * r * M_PI;
    cout << fixed << setprecision(10) << ans << endl;
}

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

#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<cmath>
#include<string>
#include<cstring>
#include<algorithm>
#include<queue>
#include<map>
#include<set>
typedef long long ll;
const ll longinf=1LL<<60;
using namespace std;


int main()
{
    float r;
    cin>>r;
    cout<<2*M_PI*r<<endl;
    return 0;
}



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

import java.util.Scanner;
class Main {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner input = new Scanner(System.in); 
      double a = input.nextInt();
      a= a*6.28;
        return (a);
    }
}

Compiler output:
Main.java:8: error: incompatible types: unexpected return value
        return (a);
               ^
Main.java:8: error: incompatible types: double cannot be converted to void
        return (a);
                ^
2 errors
Language: Java

import java.util.Scanner;
class Main {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner input = new Scanner(System.in); 
      double a = input.nextInt();
        return (a*6.28);
    }
}

Compiler output:
Main.java:7: error: incompatible types: unexpected return value
        return (a*6.28);
               ^
Main.java:7: error: incompatible types: double cannot be converted to void
        return (a*6.28);
                 ^
2 errors
Language: Java

import java.util.Scanner;
class Main {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner input = new Scanner(System.in); 
      int a = input.nextInt();
        return (a*6.28);
    }
}

Compiler output:
Main.java:7: error: incompatible types: unexpected return value
        return (a*6.28);
               ^
Main.java:7: error: incompatible types: double cannot be converted to void
        return (a*6.28);
                 ^
2 errors
Language: Java

import java.util.*;
public class Main {// Main
    public static void main(String[] args){
        return (r*6.28);
    }
}

Compiler output:
Main.java:4: error: incompatible types: unexpected return value
        return (r*6.28);
               ^
Main.java:4: error: cannot find symbol
        return (r*6.28);
                ^
  symbol:   variable r
  location: class Main
2 errors
Language: C

import math
input_r = float(input())
r = math.pi * input_r * 2
print(r)

Compiler output:
main.c:1:1: error: unknown type name 'import'
    1 | import math
      | ^~~~~~
main.c:2:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'input_r'
    2 | input_r = float(input())
      | ^~~~~~~
Language: C

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int R;
  cin >> R;
  cout << R*2*3.14;
}

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

// stay fuckin hard -- Abhinav -IIITA
#include<bits/stdc++.h>
#define int long long
#define ld long double
using namespace std;
int mod=1e9;
int32_t main(){
	ld r; cin>>r;
	r*=2;
	ld pi=3.1415926535;
	r*=pi;
	cout<<r<<"\n";
	return 0;
}

Dr. Soumyadev Maity

Compiler output:
a.cc:16:1: error: 'Dr' does not name a type
   16 | Dr. Soumyadev Maity
      | ^~
Language: Java

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

    public static void main(String[] args)
    {
    	BigDecimal pi=new BigDecimal("3.14159265359");
    	Scanner sc = new Scanner(System.in);
    	BigDecimal m = sc.nextBigDecimal();
    	System.out.println(m.multiply(pi).multiply(new BigDecimal(2)));
    	
    }


Compiler output:
Main.java:4: error: unnamed classes are a preview feature and are disabled by default.
    public static void main(String[] args)
                  ^
  (use --enable-preview to enable unnamed classes)
1 error
Language: Java

import java.math.*;
import java.util.*;
public class one
{
    public static void main(String[] args)
    {
    	BigDecimal pi=new BigDecimal("3.14159265359");
    	Scanner sc = new Scanner(System.in);
    	BigDecimal m = sc.nextBigDecimal();
    	System.out.println(m.multiply(pi).multiply(new BigDecimal(2)));
    	
    }
}

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

#include <iostream>
#include <iostream>
#include <bits/stdc++.h>
#include <string>
#include <numeric>
#include <vector>
#include <cmath>
#include <map>
#include <ctype.h>
using namespace std;

int main() {
    double r; cin >> r;
    cout << 2.0 * M_PI * r  << endl;



}


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

#include <iostream>
#include <iostream>
#include <bits/stdc++.h>
#include <string>
#include <numeric>
#include <vector>
#include <cmath>
#include <map>
#include <ctype.h>
using namespace std;

int main() {
    double r; cin >> r;
    cout << 2.0000 * M_PI * r   << endl;



}


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

#include <iostream>
#include <iostream>
#include <bits/stdc++.h>
#include <string>
#include <numeric>
#include <vector>
#include <cmath>
#include <map>
#include <ctype.h>
using namespace std;

int main() {
    double r; cin >> r;
    cout << 2.0000 * M_PI * r *  << endl;



}


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

#include <iostream>
#include <string>
#include <map>
#include <vector>
#include <iomanip>
#include <math.h>
#include <mutex>
#include <algorithm>

//#include "test.h"

//#include "SandBox/StopRangeAccess/StopRangeAccess.h"

//#include "Data.h"


using namespace std;

typedef unsigned long ulong;
typedef unsigned long long ulolong;
typedef long long lolong;


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

	cout << r * 3.141592;
}

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

#include <iostream>
using namespace std;

int main()
{
	constexpr PI = 3.1415;
  	double r;
  	cin >> r;
  	cout << r * PI;
  	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:19: error: 'PI' does not name a type
    6 |         constexpr PI = 3.1415;
      |                   ^~
a.cc:9:21: error: 'PI' was not declared in this scope
    9 |         cout << r * PI;
      |                     ^~
Language: C

#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#define IO(i, o) freopen(i, "r", stdin), freopen(o, "w", stdout)

using namespace std;
using namespace __gnu_pbds;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
mt19937 rng((uint32_t)chrono::steady_clock::now().time_since_epoch().count());

int r;

int main(){
	//IO("input.txt", "output.txt");
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cin >> r;
	cout << (r * 2 * 3.14) << "\n";
	return 0;
}

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

#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#define IO(i, o) freopen(i, "r", stdin), freopen(o, "w", stdout)

using namespace std;
using namespace __gnu_pbds;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
mt19937 rng((uint32_t)chrono::steady_clock::now().time_since_epoch().count());

int r;

int main(){
	//IO("input.txt", "output.txt");
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cin >> r;
	cout << r * 2 * 3.14 << "\n";
	return 0;
}

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

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

int main(void) {
    int r;
    double pi = std::numbers::pi;
    cin >> r;
    cout << 2*r*pi << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:22: error: 'std::numbers' has not been declared
    6 |     double pi = std::numbers::pi;
      |                      ^~~~~~~
Language: C++

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

int main(void) {
    int r;
    double pi = numbers::pi;
    cin >> r;
    cout << 2*r*pi << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:17: error: 'numbers' has not been declared
    6 |     double pi = numbers::pi;
      |                 ^~~~~~~
Language: C

#include<iostream>
#include<math.h>

using namespace std;

int main(void)
{
	const double pi = acos(-1.0);
	double ans;
	int r;

	cin >> r;

	ans=2*r*pi;

	cout << ans << endl;
}


Compiler output:
main.c:1:9: fatal error: iostream: No such file or directory
    1 | #include<iostream>
      |         ^~~~~~~~~~
compilation terminated.
Language: C++

int n{};
cin >> n;
cout << 6.28 * n;

Compiler output:
a.cc:2:1: error: 'cin' does not name a type
    2 | cin >> n;
      | ^~~
a.cc:3:1: error: 'cout' does not name a type
    3 | cout << 6.28 * n;
      | ^~~~
Language: C

/*A - Circle Pond*/
#include <bits/stdc++.h>

using namespace std;

int main(){

	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);

	double radio;
	cin >> radio;

	cout << fixed << setprecision(20) << M_PI * (radio + radio) << endl;

	
	return 0;
}

Compiler output:
main.c:2:10: fatal error: bits/stdc++.h: No such file or directory
    2 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

#include <bits/stdc++.h>
using namespace std;
#define ll long long int
#define vi vector<int>
#define pii pair<ll,ll>
#define piii pair<pii, int>
#define pb push_back
#define fs first
#define sc second
#define ppb pop_back
//#define LOCAL
//#define endl "\n"
#define d0(x) cout<<x<<" "
#define d1(x) cout<<(x)<<endl
#define d2(x,y) cout<<(x)<<" "<<(y)<<endl
#define d3(x,y,z) cout<<x<<" "<<y<<" "<<z<<endl
#define d4(x,y,z,w) cout<<x<<" "<<y<<" "<<z<<" "<<w<<endl
#define d5(x,y,z,w,s) cout<<x<<" "<<y<<" "<<z<<" "<<w<<" "<<s<<endl

#define fifo ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define f(i,a,b) for(int (i)=(a);(i)<=(b);++(i))
#define fd(i,a,b) for(int i=(a);i>=(b);--i)
const ll mod = 1e9+7;

// x>>1 is x/2  and x<<1 is x*2 



void solve()
{
	double r;
	cin>>r;
	cout<<fixed<<setprecision(5)<<6.28318530717*r<<endl;

}

int main()
{
	fifo
	int total=1;
	//cin>>total;
	for(int testcase=1;testcase<=total;testcase++)
	{
		solve();
	}



}


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

#include <bits/stdc++.h>

#define rep(i, n) for(int i = 0; i<(n); i++)
#define chmax(x, y) x = max(x, y)
#define chmin(x, y) x = min(x, y)
using namespace std;
using ll = long long;

const double PI = 3.14159265358979323846;

int main() {
    double R;
    cin >> R;
    double ans = 2 * PI * R;
    printf("%.12f\n", ans);
}


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

#include <stdio.h>
#include <math.h>

int main(){
  int R;
  double l;
  printf("R=?");
  scanf("%d",&R);
  l = 2 * PI * R;
  printf("l:%lf",l);
}

Compiler output:
main.c: In function 'main':
main.c:9:11: error: 'PI' undeclared (first use in this function)
    9 |   l = 2 * PI * R;
      |           ^~
main.c:9:11: note: each undeclared identifier is reported only once for each function it appears in
Language: C

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

int main()
{
    double r;
    cin >> r;
    double d = 2 * 3.1415 * r;
    cout << setprecision(20) << fixed << d << endl;
    return 0;
}

Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: Java

import java.util.Scanner;
public class tmp {
public static void main(String[] args) {
	Scanner scanner = new Scanner(System.in);
	int n = scanner.nextInt();
  	double p = 3.1415926535897932384626433832795;
  	System.out.println(2*n*p);
	scanner.close();}}

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

import java.util.Scanner;
public class Main {
public static void main(String[] args) {
	Scanner scanner = new Scanner(System.in);
	int n = scanner.nextInt();
  	float p = 3/1415926535897932384626433832795;
  	System.out.println(2*n*p);
	scanner.close();}}

Compiler output:
Main.java:6: error: integer number too large
  	float p = 3/1415926535897932384626433832795;
  	            ^
1 error
Language: C

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

int main(){
  int a; 
  cin >> a;
  cout << 2*3.14159*a;

return 0;
}

Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C


#include <algorithm>
#include <vector>
#include <string>
#include <ctype.h>
#include <set>
#include <map>
#include<cstdio>
#include<queue>
#include<cstdlib>
#include<time.h>
#include<string>
#include<stack>
#include<cmath>
#include<iostream>
#include<cstring>
#include<complex>
#include<tr1/unordered_set>
#include<tr1/unordered_map>


#define FOR(i,j,k) for(int i=j;i<k;i++)
#define FORD(i,j,k) for(int i=j;i>=k;i--)
#define ll long long
//Make sure no overflow problems
//#define int long long
#define pii  pair<int, int>
#define vi vector<int >
#define pb push_back
#define mp make_pair
#define x first
#define y second
#define VAR(i,n) __typeof(n) i = (n)
#define FOREACH(i,c) for(VAR(i,(c).begin());i!=(c).end();i++)
#define FORDEACH(i,c) for( VAR(i,(c).rbegin()),i!=(c).rend();i++)
#define REP(i,n) FOR(i,0,n)
#define ld long double
const int INF = 1000000009;
const long long INFLL = (ll)INF * (ll)INF;
const ld EPS = 10e-9;
const double pi=6.283185307179586232;

using namespace std;

#pragma GCC optimize ("Ofast")
static auto _ = [] { std::ios::sync_with_stdio(0); std::cin.tie(0); std::cout.tie(0); std::cerr.tie(0); return 0; } ();

int main() {
    double i;
    cin>>i;
    cout<<i*pi;
    return 0;
}



Compiler output:
main.c:2:10: fatal error: algorithm: No such file or directory
    2 | #include <algorithm>
      |          ^~~~~~~~~~~
compilation terminated.
Language: C

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<(int)(n);++i)
#define repone(i,n) for(int i=1;i<(int)(n);++i)
#define repo(i,o,n) for(int i=o;i<(int)(n);++i)
#define Rep(j,n) for(int j=0;j<(int)(n);++j)
#define Repo(j,o,n) for(int j=o;j<(int)(n);++j)
#define Repone(j,n) for(int j=1;j<(int)(n);++j)
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define int long long
#define pb(a) push_back(a)
#define eraser(v,i) (v).erase(v.begin()+(i))
#define pbpair(a,b) push_back(make_pair(a,b))
#define Little 1
const long long INF = 1LL<<60;
#define pairint pair<int,int>
signed main(){
  int x=0,y=0,z=0,w=0,n=0,m=0,o=0;
  std::cin >> x;
  std::cout << x*2*M_PI << '\n';
}


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

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int r;cin>>r;
  cout<<22.0/7*2*r<<endl;
  return 0;
}

Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

#incude<bits/stdc++.h>
using namespace std;
int main()
{
	int r;cin>>r;
  cout<<22.0/7*2*r<<endl;
  return 0;
}

Compiler output:
main.c:1:2: error: invalid preprocessing directive #incude; did you mean #include?
    1 | #incude<bits/stdc++.h>
      |  ^~~~~~
      |  include
main.c:2:1: error: unknown type name 'using'
    2 | using namespace std;
      | ^~~~~
main.c:2:17: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'std'
    2 | using namespace std;
      |                 ^~~
main.c: In function 'main':
main.c:5:15: error: 'cin' undeclared (first use in this function)
    5 |         int r;cin>>r;
      |               ^~~
main.c:5:15: note: each undeclared identifier is reported only once for each function it appears in
main.c:6:3: error: 'cout' undeclared (first use in this function)
    6 |   cout<<22.0/7*2*r<<endl;
      |   ^~~~
main.c:6:21: error: 'endl' undeclared (first use in this function)
    6 |   cout<<22.0/7*2*r<<endl;
      |                     ^~~~
Language: C

#include <bits/stdc++.h>

int ri() {
	int n;
	scanf("%d", &n);
	return n;
}

int main() {
	int a = ri();
	printf("%.11f\n", a * acos(-1) * 2);
	return 0;
}


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

#include <iostream>
#include <cmath>
#include <iomanip>

using namespace std;

int main() {
  int r;
  cin >> r;
  cout << fixed << setprecision(10) << 2 * r * M_PI << endl;
}

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

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

int main() {
 	int r;
  	cin >> r;
  	double x = r;
  	cout << 6.282 * r << endl;
}

Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'namesoace'
    2 | using namesoace std;
      |       ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:6:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |         cin >> r;
      |         ^~~
      |         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:8:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    8 |         cout << 6.282 * r << 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:8:30: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    8 |         cout << 6.282 * r << 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<bits/stdc++.h>
using namespace std;
int main()
{
	doule pi = acos(-1);
  	int r;
  	cin >> r;
  printf("%.5lf",2 * r * pi);
  
  
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: 'doule' was not declared in this scope; did you mean 'double'?
    5 |         doule pi = acos(-1);
      |         ^~~~~
      |         double
a.cc:8:26: error: 'pi' was not declared in this scope
    8 |   printf("%.5lf",2 * r * pi);
      |                          ^~
Language: C

#include <iostream>
#include <limits>
#include <numeric>
#include <string>
#include <algorithm>
#include <vector>
#include <math.h>
#include <set>
#include <map>
#include <stack>
#include <queue>
#include <utility>
using namespace std;
#define INF 100000000
#define REP(i, n) for(int (i)=0; (i)<(n); (i)++)
#define rep(i, n) for(int (i)=1; (i)<=(n); (i)++)
typedef pair<int, int> P;
typedef long long ll;
int main(){
    int R;
    cin >> R;
    cout << 2 * R * M_PI << endl;
    return 0;
}

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

#include<iostream>
using namespace std;
int main(){
	cin>>n;
  	long long int pi = 3.14159265;
  long long int cir= pi*2*n;
  cout<<cir;
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:14: error: 'n' was not declared in this scope
    4 |         cin>>n;
      |              ^
Language: C

#include <iostream>
#include <string>
#include <math.h>
#include <vector>
#include <algorithm>
#include <map>
#include <set>
#include <stack>
#include <queue>

using namespace std;
typedef long long ll;
#define rep(i,n) for(ll i=0;i<(ll)n;i++)
#define rep1(i,n) for(ll i=1;i<(ll)n;i++)
#define repf(i,a,b) for(ll i=(ll)a;i<(ll)b;i++)
#define repr(i,a,b) for(ll i=(ll)a-1;i>=(ll)b;i--)
#define Fi first
#define Se second
typedef pair<ll, ll> pll;
const char END = '\n';


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

	double r;
	cin >> r;
	cout << 2 * r * 3.14159265 << '\n';

	return 0;
}

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

#include<bits/stdc++.h>
#define pi=3.14159
using namespace std;
int main(){
	int r; scanf("%d",&r);
    printf("%.3f",pi*2*r);
}

Compiler output:
a.cc:2:9: warning: ISO C++11 requires whitespace after the macro name
    2 | #define pi=3.14159
      |         ^~
a.cc: In function 'int main()':
a.cc:2:11: error: expected primary-expression before '=' token
    2 | #define pi=3.14159
      |           ^
a.cc:6:19: note: in expansion of macro 'pi'
    6 |     printf("%.3f",pi*2*r);
      |                   ^~
Language: C

#include <iostream>
#include <string>
#include <math.h>
#include <vector>
#include <algorithm>
#include <map>
#include <set>
#include <stack>
#include <queue>

using namespace std;
typedef long long ll;
#define rep(i,n) for(ll i=0;i<(ll)n;i++)
#define rep1(i,n) for(ll i=1;i<(ll)n;i++)
#define repf(i,a,b) for(ll i=(ll)a;i<(ll)b;i++)
#define repr(i,a,b) for(ll i=(ll)a-1;i>=(ll)b;i--)
#define Fi first
#define Se second
#define PI 3.14159265359
typedef pair<ll, ll> pll;
const ll MAX = 1000000000000000000;
const char END = '\n';


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

	double R, Ans;
	cin >> R;
	
	Ans = R * 2 * PI;

	cout << Ans << endl;

	return 0;
}

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

#include <bits/stdc++.h>

#define PI 3.14159265359
#define INF 1e9
#define LINF 1e18
#define IMOD 1000000007 
#define irep(i,n) for(int  i = 0; i < n; i++)
#define irep2(i,a,n) for(int i = a; i <= n; i++)
#define lrep(i,n) for(long long  i = 0; i < n; i++)
#define lrep2(i,a,n) for(long long i = a; i <= n; i++)

typedef long long ll;
typedef std::vector<char> v_char;
typedef std::vector<double> v_double;
typedef std::vector<std::vector<double> > v2_double;
typedef std::vector<int> v_int;
typedef std::vector<std::vector<int> > v2_int;
typedef std::vector<ll> v_ll;
typedef std::vector<std::vector<ll> > v2_ll;
typedef std::vector<std::string> v_string;
typedef std::vector<std::vector<std::string> > v2_string;
typedef std::vector<bool> v_bool;
typedef std::vector<std::vector<bool> > v2_bool;
typedef std::pair<ll, ll> pll;
typedef std::pair<int, int> pii;

int dx[4] = {1, 0, -1, 0};
int dy[4] = {0, 1, 0, -1};

using namespace std;

int main(void)
{
    int n;
    cin >> n;

    printf("%.8f\n", 2.0 * PI * n);

    return 0;
}
/** atcoder **/


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

#include <iostream>
#include <math.h>
#include <numeric>
#include <vector>
#include <map>
#include <algorithm>
#include <set>
#include <queue>
#include <tuple>
//#include <functional>
#include <cstring>

#define PI 3.14159265359
#define INF 1e9
#define LINF 1e18
#define IMOD 1000000007 
#define irep(i,n) for(int  i = 0; i < n; i++)
#define irep2(i,a,n) for(int i = a; i <= n; i++)
#define lrep(i,n) for(long long  i = 0; i < n; i++)
#define lrep2(i,a,n) for(long long i = a; i <= n; i++)

typedef long long ll;
typedef std::vector<char> v_char;
typedef std::vector<double> v_double;
typedef std::vector<std::vector<double> > v2_double;
typedef std::vector<int> v_int;
typedef std::vector<std::vector<int> > v2_int;
typedef std::vector<ll> v_ll;
typedef std::vector<std::vector<ll> > v2_ll;
typedef std::vector<std::string> v_string;
typedef std::vector<std::vector<std::string> > v2_string;
typedef std::vector<bool> v_bool;
typedef std::vector<std::vector<bool> > v2_bool;
typedef std::pair<ll, ll> pll;
typedef std::pair<int, int> pii;

int dx[4] = {1, 0, -1, 0};
int dy[4] = {0, 1, 0, -1};

using namespace std;

int main(void)
{
    int n;
    cin >> n;

    printf("%.8f\n", 2.0 * PI * n);

    return 0;
}
/** atcoder **/


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

#include <bits\stdc++.h>

using namespace std;

#define PI 3.141

int main()
{
	int r;

	cin >> r;

	cout << 2 * r * PI << endl;
}


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

#include <bin\stdc++.h>

using namespace std;

#define PI 3.141

int main()
{
	int r;

	cin >> r;

	cout << 2 * r * PI << endl;
}


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

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

int main(){
	int r;
	cin>>r;
	double ans=2*3.14159265358979323*r;
	cout<<ans<<endl;
}

Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include "bin\stdc++.h"

using namespace std;

#define PI 3.141

int main()
{
	int r;

	cin >> r;

	cout << 2 * r * PI << endl;
}


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

#include "stdc++.h"

using namespace std;

#define PI 3.141

int main()
{
	int r;

	cin >> r;

	cout << 2 * r * PI << endl;
}


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

#include <string>
#include <math.h>
#include <vector>
#include <algorithm>
#include <map>
#include <set>
#include <stack>
#include <queue>

using namespace std;
typedef long long ll;
#define rep(i,n) for(ll i=0;i<(ll)n;i++)
#define rep1(i,n) for(ll i=1;i<(ll)n;i++)
#define repf(i,a,b) for(ll i=(ll)a;i<(ll)b;i++)
#define repr(i,a,b) for(ll i=(ll)a-1;i>=(ll)b;i--)
#define Fi first
#define Se second
typedef pair<ll, ll> pll;
const ll MAX = 1000000000000000000;
const char END = '\n';


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

	double R, Ans;
	cin >> R;
	
	

	cout << Ans << endl;

	return 0;
}


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

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

int main() {
  double R;
  cin >> R;
  cout << R * 2 * M_PI << "\n";
}

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: Java

import java.util.Scanner;
/**
 * Write a description of class Circumfrence here.
 *
 * @author (your name)
 * @version (a version number or a date)
 */
public class Circumfrence
{
    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);
        
        int num = sc.nextInt();
        
        System.out.println(3.14 * 2 * num);
    }
}



Compiler output:
Main.java:8: error: class Circumfrence is public, should be declared in a file named Circumfrence.java
public class Circumfrence
       ^
1 error
Language: C

#include <iostream>
#include <string>
#include <math.h>
#include <vector>
#include <algorithm>
#include <map>
#include <set>
#include <stack>
#include <queue>

using namespace std;
typedef long long ll;
#define rep(i,n) for(ll i=0;i<(ll)n;i++)
#define rep1(i,n) for(ll i=1;i<(ll)n;i++)
#define repf(i,a,b) for(ll i=(ll)a;i<(ll)b;i++)
#define repr(i,a,b) for(ll i=(ll)a-1;i>=(ll)b;i--)
#define Fi first
#define Se second
typedef pair<ll, ll> pll;
const ll MAX = 1000000000000000000;
const char END = '\n';


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

	double R, Ans;
	cin >> R;
	
	Ans = 2 * 3.1415*R;

	cout << Ans << END;

	return 0;
}


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

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
void read(int &x){
	char ch=getchar();x=0;
	for (;ch==' '||ch=='\n';ch=getchar());
	for (;ch!=' '&&ch!='\n';x=x*10+ch-'0',ch=getchar()); 
}
void write(ll x){
	if (x>9) write(x/10);
	putchar(x%10+'0'); 
}
int n,a[200004],sub[200004];
vector<int>g[200004],v[200004];
ll ans[200004];
int ans1[200004],res[200004];
void dfs(int x,int par){
	sub[x]=1;
	for (int i=0;i<g[x].size();i++)if(g[x][i]!=par)
		dfs(g[x][i],x),sub[x]+=sub[g[x][i]];
}
void dfs1(int x,int par){
	if (v[a[x]].empty()) ans1[a[x]]-=sub[x];
	else res[v[a[x]][v[a[x]].size()-1]]-=sub[x];
	for (int i=0;i<g[x].size();i++) if (g[x][i]!=par){
		v[a[x]].push_back(g[x][i]);
		dfs1(g[x][i],x);
		ans[a[x]]+=1ll*res[g[x][i]]*(res[g[x][i]]+1)/2;
		v[a[x]].pop_back(); 
	}
}
int x,y;
ll A;
int main(){
	read(n),A=1ll*n*(n+1)/2;
	for (int i=1;i<=n;i++) read(a[i]),ans1[i]=n;
	for (int i=1;i<n;i++)read(x),read(y),g[x].push_back(y),g[y].push_back(x); 
	dfs(1,-1);
	for (int i=1;i<=n;i++) res[i]=sub[i];
	dfs1(1,-1);
	for (int i=1;i<=n;i++){
		ll res=A-ans[i]-1ll*ans1[i]*(ans1[i]+1)/2;
		write(res),puts("");
	}
}

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

#include <iostream>
#include <cmath>
#include <iomanip>

using namespace std;

void solve(){
    int r;
    cin >> r;
    cout << 2 * r * M_PI << endl;
}

int main(){

    cin.tie(0);
    ios::sync_with_stdio(false);
    cout << setprecision(16);
    
    solve();

    return 0;
}


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

#include <iostream>
#include <vector>
#include <queue>
#include <deque>
#include <algorithm>
#include <string>
#include <numeric>
#include <cmath>
#include <map>
#include <iomanip>

using namespace std;

void solve(){
    int r;
    cin >> r;
    cout << 2 * r * M_PI << endl;
}

int main(){

    cin.tie(0);
    ios::sync_with_stdio(false);
    cout << setprecision(16);
    
    solve();

    return 0;
}


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

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

int main()
{
    int r;
    cin >> r;
    cout << setprecision(20) << 2 * acos(-1) * r << "\n";
}


Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

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

int32_t main()
{
      ios::sync_with_stdio(false);
      cin.tie(0); 
      double r;
      cin>>r;
      double p = 22.0/(7.0);
      cout.precision(8); cout<<fixed; 
      cout<<2.0*p*r*1.0<<endl;
      return 0;
}

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

#include "bits/stdc++.h"
using namespace std;
#define endl "\n"
#define int long long

int32_t main()
{
      ios::sync_with_stdio(false);
      cin.tie(0); 
      double r;
      cin>>r;
      double p = 22.0/(7.0);
      cout.precision(8); cout<<fixed; 
      cout<<2.0*p*r*1.0<<endl;
      return 0;
}

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include "bits/stdc++.h"
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

#include<bits/stdc++.h>
using namespace std;
#define pie 3.1415926

int main()
{
    double R;
    cin>>R;
    cout<<2*pie*R<<endl;


    return 0;
}


Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
using namespace std;

int main(){
int A;
  cin >> A;
  cout << A*3.141592 << endl
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:29: error: expected ';' before '}' token
    7 |   cout << A*3.141592 << endl
      |                             ^
      |                             ;
    8 | }
      | ~
Language: C

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pi 2*acos(0.0)

int main()
{
    double r;
    cin>>r;
    cout<<setprecision(10)<<2*r*pi<<endl;
}


//    #include <chrono>
//    using namespace std::chrono;
//    auto start = high_resolution_clock::now();
//    auto stop = high_resolution_clock::now();
//    auto duration = duration_cast<milliseconds>(stop - start);
//    cout << duration.count() << endl;


Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

#include<bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef pair<ll, ll> pll;
#define mod 1000000007
#define all(x) (x).begin(), (x).end()
#define call(x) (x).cbegin(), (x).cend()
#define pb push_back
const double PI = acos(-1);
const long long INF = (1 << 30);
ll gcd(ll a,ll b){return b ? gcd(b,a%b) : a;}
ll lcm(ll a,ll b){return a / gcd(a,b) * b;}
ll stringcount(string s, char c){return count(s.cbegin(), s.cend(), c);}
bool isInteger(double x){return floor(x) == x;}
ll ceil(const ll a, const ll b){return ((a)+(b)-1)/b;}

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

  double r;
  cin >> r;
  printf("%.16f\n", 2*PI*r);
  return 0;
}

Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

r = int(input())
print(r*3.14)

Compiler output:
main.c:1:1: warning: data definition has no type or storage class
    1 | r = int(input())
      | ^
main.c:1:1: error: type defaults to 'int' in declaration of 'r' [-Wimplicit-int]
main.c:1:5: error: expected expression before 'int'
    1 | r = int(input())
      |     ^~~
Language: C

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

#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep1(i, n) for (int i = 1; i < (int)(n); i++)
typedef long long ll;

int main() {
    double r; cin >> r;
    cout << 2 * M_PI * r << endl; 
}

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: Java

import java.util.Scanner;

class Sample3_2 {
	public static void main(String[] args ) {
		Scanner scn = new Scanner(System.in);
		int num = sc.nextInt();
      	System.out.println(num * num * 3.14);
	}
}

Compiler output:
Main.java:6: error: cannot find symbol
		int num = sc.nextInt();
		          ^
  symbol:   variable sc
  location: class Sample3_2
1 error
Language: C

#include<bits/stdc++.h>
using namespace std;
#define rep(i, n) for(int i = 0; i < (int)(n); i++)
#define repp(i, n) for(int i = 1; i <= (int)(n); i++)
#define co(x) cout<<x<<endl
typedef long long int lint;

int main(){
  long double R;
  cin >> R;
  co(2*R*M_PI);
}   

Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

#include<cstdio>
#include<iostream>
#include<cstring>
#include<string>
#include<cmath>
#include<algorithm>
#include<vector>
#include<queue>
#include<stack>
#include<map>
using namespace std;

#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define all(v) v.begin(), v.end()

int main(){
  int r;
  cin >> r;
  double pi = acos(-1);
  cout << 2*r*pi << endl;
}

Compiler output:
main.c:1:9: fatal error: cstdio: No such file or directory
    1 | #include<cstdio>
      |         ^~~~~~~~
compilation terminated.
Language: C

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int a;
    cin>>a;
    float res=2*3.1416*a;
    cout<<res;
    return 0;
}


Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

#include <cstdlib>
#include <iostream>
#include <string>
#include <vector>
using namespace std;
typedef long long LL;

int main() {
  int R; cin >> R;
  printf("%.4f\n", 3.141592*R*2);
}


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

#include <bits/stdc++.h>

using namespace std;

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

  int r;
  cin >> r;
  cout << fixed << setprecision(10) << 2 * acos(-1) * r;

  return 0;
}

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: Java

import java.util.*;

public class A163 {
public static void main(String args[]) {
	Scanner sc=new Scanner(System.in);
	double h=sc.nextDouble();
	double r=h*2*3.14;
	
    System.out.println(r);
}
}


Compiler output:
Main.java:3: error: class A163 is public, should be declared in a file named A163.java
public class A163 {
       ^
1 error