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

#include<bits/stdc++.h>
//#define int long long
#define rep(i, l, r) for(register int i = l; i <= r; ++ i)
using namespace std;
const int N = 100010, mod = 2147483647;
const double PI=3.1415926;
signed main()
{

	// freopen("testdata.in","r",stdin);
	// freopen("testdata.out","w",stdout);
	int n;
	//double n;

	scanf("%d",&n);

	printf("%.2lf",2 * (double) n * PI);
	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 <stdio.h>
#include <math.h>

int main()[
int R=0;
double L=0.0;

scanf("%d", &R);

L=2.0*M_PI*R;

printf("%lf", L);

]

Compiler output:
main.c:5:1: error: expected expression before 'int'
    5 | int R=0;
      | ^~~
Language: C

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  
  double R;
  cin>>R;
  
  cout<<R*2*M_PI<<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<iomanip>
using namespace std;
#define pi 3.1416
int main()
{
    int r;
    while(cin>>r)
    {
        cout<<fixed<<setprecision(<<(2*r*pi)<<endl;
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:35: error: expected primary-expression before '<<' token
   10 |         cout<<fixed<<setprecision(<<(2*r*pi)<<endl;
      |                                   ^~
Language: C

#include <iostream>

using namespace std;

int main () 
{
  int a;
  const long double b = 3.14159;
  cin >> a;
  a *= b; 
  a *= 2;
  cout << a << '\n';
  }


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

#include <iostream.h>

int main(){


	const double PI=3.14159265358979323846;
	double r;
	cin >> r;

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



  return 0;
}



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

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

int main()
{
	cout << fixed << setprecision(14);
	ll n;
	cin>>n;
	cout<<2*(M_PI)*n;
	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"
#include<math.h>
using namespace std;

int main(){
    int64_t i,j,k,l;//preparation for
    double r;
    double p;

    p=3.1415926;

    cin>>r;
    r*=2*p;
    cout<<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>
using namespace std;
using ll = long long;
#define rep(i,n) for(ll i=0;i<n;i++)
#define all(n) n.begin(),n.end()

int main() {
  int n;
  cin >> n;
  float ans = 2 * n * 3.141;
  cout << ans << 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 <iostream>
#include<iomanip>
 #define len length

using namespace std;
typedef long long ll;

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

   double n;
   cin>>n;
   n*=2;
   n*=3.14159265359;
   cout<<n<<setprecision(6)<<fixed;
 return 0;
}


Compiler output:
main.c:3:12: fatal error: iostream: No such file or directory
    3 |   #include <iostream>
      |            ^~~~~~~~~~
compilation terminated.
Language: C

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int r,c;
	cin>>r;
	c=r*r*3.14159265;
	cout<<c;
	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++

/* ****devACE**** */

#include<bits/stdc++.h>
#define ll          long long
#define pb          push_back
#define	endl		'\n'
#define pii         pair<ll int,ll int>
#define vi          vector<ll int>
#define all(a)      (a).begin(),(a).end()
#define F           first
#define S           second
#define sz(x)       (ll int)x.size()
#define hell        1000000007
#define rep(i,a,b)	for(ll int i=a;i<b;i++)
#define lbnd        lower_bound
#define ubnd        upper_bound
#define bs          binary_search
#define mp          make_pair
using namespace std;

#define N  100005

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	int TESTS=1;
//	cin>>TESTS;
	while(TESTS--)
	{
		ll r;
		cin>>r;
		double pi = 3.141592653589793238;
		printf("%0.9f",2.0*)
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:35:36: error: expected primary-expression before ')' token
   35 |                 printf("%0.9f",2.0*)
      |                                    ^
Language: C++

#include<pch.h>
#include <iostream>

int main()
{
	int R;
	std::cin >> R;
	std::cout << R * 3.1415;
	return 0;
}


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

#include<iostream.h>
#include<algorithm.h>
#include<vector.h>
#include<math.h>
using namespace std;
int main(){
    int r;
    scanf("%d",&r);
    double A;
    const double PI  =3.141592653589793238463;
    A = (double)PI * 2 * r;
    printf("%.20f",A);
    return 0;
}

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

#include <iostream>
#include<iomanip>
using namespace std;
#define pi 3.141592654

int main() {
    long double x;
    cin>>x;
    x = 2*x*pi;
    cout<<setprecision(10)<<x<<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 namespace std;
 
int main(void){
    int N;
    cin >> N;
    N = 2*N;
  	N = N*M_PI
    cout << N << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:5: error: expected ';' before 'cout'
    9 |     cout << N << endl;
      |     ^~~~
Language: C

#include <bits/stdc++.h>
    using namespace std;
    typedef long long int ll;
     
    int main() {
    	#ifndef ONLINE_JUDGE
        // for getting input from input.txt
        freopen("input.txt", "r", stdin);
        // for writing output to output.txt
        freopen("output.txt", "w", stdout);
        #endif
     
        float c;
        int r;

        cin>>r;

        c = float(22 * 2 * r)/float(7);
        cout<<c;
   
        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()
{
int r;
cin >> r;

cout << (float)r * 2 * 3.14;

return0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:1: error: 'return0' was not declared in this scope
   11 | return0;
      | ^~~~~~~
Language: C

#include <algorithm>
#include <bitset>
#include <cassert>
#include <cmath>
#include <cstdlib>
#include <cstring>
#include <deque>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <limits>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <stack>
#include <unordered_map>
#include <unordered_set>
#include <vector>

#define len(X) ((int)(X).size())

#ifdef __LOCAL
#define DBG(X) cout << #X << "=" << (X) << '\n';
#define SAY(X) cout << (X) << '\n';
#else
#define DBG(X)
#define SAY(X)
#endif

using namespace std;

using ll = long long int;
using ull = unsigned long long int;
using ld = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

const int INT_INF = (int)(2e9);
const ll  LL_INF = (ll)(2e18);

const int NIL = -1;
static mt19937 _g(time(nullptr));

std::string pad(int num)
{
    char buffer[4];
    std::snprintf(buffer, sizeof(buffer), "%03d", num);
    return buffer;
}

inline ll randint(ll a, ll b) { ll w = (_g() << 31LL) ^ _g(); return a + w % (b - a + 1); }
inline void fast_io() { ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr); };
template<typename T> inline T sign(T x) { return T(x > 0) - T(x < 0); }
template<typename T, typename S> inline ostream& operator<<(ostream& os, const pair<T, S> p) { cout << "[" << p.first << ";" << p.second << "]"; return os; }
template<typename T> inline ostream& operator<<(ostream& os, const vector<T>& v) { for (auto el : v) cout << el << " "; return os; }
template<typename T> inline T fetch() { T ret; cin >> ret; return ret; }
template<typename T> inline vector<T> fetch_vec(int sz) { vector<T> ret(sz); for (auto& elem : ret) cin >> elem; return ret; }

#ifdef _MSC_VER
#  include <intrin.h>
#  define __builtin_popcount __popcnt
#endif

int solve()
{
    int N;

    std::cin >> N;

    cout << 2.0 * M_PI * N << endl;

    return 0;
}

int main()
{
//    std::cout << solve() << std::endl;
    solve();

    return 0;
}

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

#include <bits/stdc++.h>
using namespace std;
int main(void){
int r;
cin>>r;
r*=M_PI;
cout<<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: C

#include <iostream>
#include<vector>
#include<algorithm>
using namespace std;

int main() {
	int a;
	cin >> a;
	cout << a * 6.283184 << 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(){
    double PI = 3.1415;
    double R;
    cin >> R;
    double L = 2*R*PI
    cout << L << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:5: error: expected ',' or ';' before 'cout'
    9 |     cout << L << endl;
      |     ^~~~
Language: C++

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

int main()
{
    int r;
    cin>>r;
    flost pi = 3.1416, two = 2.00;
    cout<<two*pi*r;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:5: error: 'flost' was not declared in this scope; did you mean 'float'?
    8 |     flost pi = 3.1416, two = 2.00;
      |     ^~~~~
      |     float
a.cc:9:11: error: 'two' was not declared in this scope
    9 |     cout<<two*pi*r;
      |           ^~~
a.cc:9:15: error: 'pi' was not declared in this scope
    9 |     cout<<two*pi*r;
      |               ^~
Language: C++

#include <string>
#include <stdio.h>
using namespace std;
int main(){
  int R;
  cin >> R;
  cout << R * 6.2831 << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope
    6 |   cin >> R;
      |   ^~~
a.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    1 | #include <string>
  +++ |+#include <iostream>
    2 | #include <stdio.h>
a.cc:7:3: error: 'cout' was not declared in this scope
    7 |   cout << R * 6.2831 << endl;
      |   ^~~~
a.cc:7:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:7:25: error: 'endl' was not declared in this scope
    7 |   cout << R * 6.2831 << endl;
      |                         ^~~~
a.cc:2:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
    1 | #include <string>
  +++ |+#include <ostream>
    2 | #include <stdio.h>
Language: C

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

public class Main {
    static final int MOD = 1_000_000_007; // 10^9+7
    // static final int MAX = 2_147_483_646; // intの最大値
    static final int INF = 1_000_000_000; // 10^9
    static final int MAX = 10_000_000;

    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);
        double n = sc.nextDouble();
        System.out.println(2*n*Math.PI);
        

    }

}


Compiler output:
main.c:1:1: error: unknown type name 'import'
    1 | import java.util.*;
      | ^~~~~~
main.c:1:12: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
    1 | import java.util.*;
      |            ^
main.c:2:1: error: unknown type name 'import'
    2 | import java.math.*;
      | ^~~~~~
main.c:2:12: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
    2 | import java.math.*;
      |            ^
main.c:4:1: error: unknown type name 'public'
    4 | public class Main {
      | ^~~~~~
main.c:4:14: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'Main'
    4 | public class Main {
      |              ^~~~
main.c:5:28: error: invalid suffix "_000_000_007" on integer constant
    5 |     static final int MOD = 1_000_000_007; // 10^9+7
      |                            ^~~~~~~~~~~~~
main.c:7:28: error: invalid suffix "_000_000_000" on integer constant
    7 |     static final int INF = 1_000_000_000; // 10^9
      |                            ^~~~~~~~~~~~~
main.c:8:28: error: invalid suffix "_000_000" on integer constant
    8 |     static final int MAX = 10_000_000;
      |                            ^~~~~~~~~~
Language: C

R = int(input("Enter the radius of R: "))
C = 2 * 3.141592653589793238 * R
print(f"The circumference is {C}")

Compiler output:
main.c:1:1: warning: data definition has no type or storage class
    1 | R = int(input("Enter the radius of R: "))
      | ^
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("Enter the radius of R: "))
      |     ^~~
Language: Java

import java.lang.*;
import java.util.*;
public class CodeForces 
{
    public static void main(final String args[]) {
        final Scanner s = new Scanner(System.in);
        int r=s.nextInt();
        double ans=3.14159265;
        ans=ans*2.0;
        System.out.println(ans*r);
    }
}

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

from math import pi
r = input()
def cicle(r):
    return 2 * r * pi

Compiler output:
main.c:1:1: error: unknown type name 'from'
    1 | from math import pi
      | ^~~~
main.c:1:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'import'
    1 | from math import pi
      |           ^~~~~~
main.c:1:11: error: unknown type name 'import'
Language: C

#include<bits/stdc++.h>
using namespace std;
//#define  ONLINE_JUDGE 1
int main()
{
	/*
	#ifdef ONLINE_JUDGE
	freopen("C:/Users/wyx/Desktop/Amy/wangyixuan/c++/test data/data.txt", "r",stdin);
	#endif
	*/
	/*---------------Begin code---------------*/
	int n;
	double m;
	cin>>n;
	m=2*n*3.1415926535898;
	cout<<m;
	/*---------------End  code----------------*/
	/*
	#ifdef ONLINE_JUDGE
	fclose(stdin);
	#endif
	system("pause");
	*/
	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>
using namespace std;
typedef long long ll;
#define rep(i,x) for(int i=1;i<=x;i++)
#define put(ans)    cout << ans << endl;
#define sort(s) sort(s.begin(),s.end())
#define reverse(s) reverse(s.begin(),s.end())

//最大公約数
ll gcd(ll a, ll b) {
    return b ? gcd(b, a%b) : a;
}
//最小公倍数
ll lcm(ll a, ll b) {
    return a / gcd(a, b) * b;
}

int main(){
    double 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;

typedef long long int ll;
typedef vector<int> vi;
typedef set<int> si;
typedef vector<ll> vll;

#define pvec(v) for(auto e: v) cout << e << " ";
#define IO ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define forn(s, e) for(int i=s; i<e; ++i)
#define pb push_back
#define INF 1000000000

int main(){
	IO
	long double r, cir;, PI = 3.14159265;
	cin >> r;
	cir = 2.0*PI*r;
	cout << setprecision(6) << fixed << cir << endl;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:28: error: expected primary-expression before ',' token
   17 |         long double r, cir;, PI = 3.14159265;
      |                            ^
a.cc:17:30: error: 'PI' was not declared in this scope
   17 |         long double r, cir;, PI = 3.14159265;
      |                              ^~
Language: C

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

#define ld			long double
#define int         long long
#define pb          push_back
#define pii         pair<int,int>
#define vi          vector<int>
#define vii         vector<pii>
#define mi          map<int,int>
#define mii         map<pii,int>
#define all(a)      (a).begin(),(a).end()
#define x           first
#define y           second
#define sz(x)       (int)x.size()
#define endl        '\n'
#define MOD         1000000007
#define sd(t) 		scanf("%d",&(t))
#define rep(i,a,b)  for(int i=a;i<b;i++)
#define hii 		cout << "hii" << endl
#define okay 		cout << "okay" << endl
#define hey 		cout << "hey" << endl
#define M_PIl       3.141592653589793238462643383279502884
template <class T> ostream& operator << (ostream &os, const vector<T> &v) { for (T i : v) os << i << ' '; return os; }
template <class T> ostream& operator << (ostream &os, const set<T> &v) { for (T i : v) os << i << ' '; return os; }
template <class T, class S> ostream& operator << (ostream &os, const pair<T, S> &v) { os << v.first << ' ' << v.second; return os; }
template <class T, class S> ostream& operator << (ostream &os, const unordered_map<T, S> &v) { for (auto i : v) os << '(' << i.first << "=>" << i.second << ')' << ' '; return os; } 
 
 
#ifndef ONLINE_JUDGE
#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
    template <class Arg1> void __f(const char* name, Arg1&& arg1) { cerr << name << " : " << arg1 << endl; }
    template <class Arg1, class... Args>
    void __f(const char* names, Arg1&& arg1, Args&&... args) {
        const char* sep = strchr(names + 1, ',');
        cerr.write(names, sep - names) << " : " << arg1 << "  ";
        __f(sep + 1, args...);
    }
#else
#define trace(...) 
#pragma GCC optimize ("O3")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("avx2,sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define _CRT_SECURE_NO_WARNINGS
#endif // ifndef ONLINE_JUDGE

void fast()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);	
}

clock_t time_p=clock();
void starboy1299()
{
    time_p=clock()-time_p;
    cerr<<"Time Taken : "<<(float)(time_p)/CLOCKS_PER_SEC<<"\n";
}

const int N = 2e5+5;
int arr[N], h[N], bit[N];
int n, k;

void solve()
{
	int r;
	cin >> r;
	ld ans = 2*(M_PIl)*r;

	cout << fixed << setprecision(15) << ans << endl;
}			 	

int32_t main(){
	fast();
    int t = 1;
    // cin>> t;
    while(t--){
    	solve();
    }
	starboy1299();
}




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;
public class Circumference{
 public satic void main(String[]args){
 float R;
   double circum;
 Scanner scan = new Scanner(System.in);
 System.out.println("Enter radius of the circle :");
 R = scan.nextFloat();
 circum = 2 * 3.14 * R;
System.out.println("\n Circumference of circle = " + circum);
 }
}

Compiler output:
Main.java:3: error: <identifier> expected
 public satic void main(String[]args){
             ^
1 error
Language: C

#pragma GCC optimize(2)
#pragma G++ optimize(2)
#include<bits/stdc++.h>
#include<math.h>
#define si(a) scanf("%d",&a)
#define sl(a) scanf("%lld",&a)
#define sd(a) scanf("%lf",&a)
#define ss(a) scanf("%s",a)
#define ms(a) memset(a,0,sizeof(a))
#define repi(i,a,b) for(register int i=a;i<=b;++i)
#define repd(i,a,b) for(register int i=a;i>=b;--i)
#define reps(s) for(int i=head[s];i;i=e[i].nxt)
#define ce(i,r) i==r?'\n':' '
#define pb push_back 
#define fi first
#define se second
#define pr(x) cout<<#x<<": "<<x<<endl

using namespace std;
typedef long long ll;

double pi = acos(-1);
int r;

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

Compiler output:
main.c:3:9: fatal error: bits/stdc++.h: No such file or directory
    3 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

  #include <iostream>
#include<iomanip>
 #define len length

using namespace std;
typedef long long ll;

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

   double n;
   cin>>n;
   n*=2;
   n*=3.14159265359;
   cout<<n<<setprecision(6)<<fixed;
 return 0;
}


Compiler output:
main.c:1:12: fatal error: iostream: No such file or directory
    1 |   #include <iostream>
      |            ^~~~~~~~~~
compilation terminated.
Language: C

#include <bits/stdc++.h>
using namespace std;
float pai=3.1415926;
float r;
int main()
{
	scanf("%f",&r);
  	printf("%.7f",r*2*pai);
  	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 <stdio.h>
#include <math.h>

int main()[
double R=0;
double L=0;

scanf("%lf", &R);

L=2.0*M_PI*R;

printf("%lf", L);

]

Compiler output:
a.cc:5:1: error: expected primary-expression before 'double'
    5 | double R=0;
      | ^~~~~~
a.cc:4:12: error: expected ']' before 'double'
    4 | int main()[
      |            ^
      |            ]
    5 | double R=0;
      | ~~~~~~      
a.cc:8:6: error: expected constructor, destructor, or type conversion before '(' token
    8 | scanf("%lf", &R);
      |      ^
a.cc:10:1: error: 'L' does not name a type
   10 | L=2.0*M_PI*R;
      | ^
a.cc:12:7: error: expected constructor, destructor, or type conversion before '(' token
   12 | printf("%lf", L);
      |       ^
a.cc:14:1: error: expected unqualified-id before ']' token
   14 | ]
      | ^
Language: C

#include<iostream>
#include<vector>
#include<algorithm>
#include<iomanip>
#include<string>
#include<queue>
#include<utility>
#include<cmath>
#include<sstream>
#include<istream>
#include<numeric>

using namespace std;

int main()
{
  long long R;
  cin >> R;

  cout << 2*3.141592*R << endl;

  return 0;
}


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

#include<iostream>
#include<algorithm>
#include<vector>
#include<math.h>
using namespace std;
int main(){
    int r;
    scanf("%d",&r);
    double A;
    const double PI  =3.141592653589793238463;
    A = (double)PI * 2 * r;
    printf("%.20f",A);
    return 0;
}

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

#include <bits/stdc++.h>
#define rep(i,n) for(int i=0; i<(n); ++i)
using namespace std;
const double PI=3.14159265358979323846;

const string YES = "Yes";
const string NO = "No";

void solve(long long N){
    double result = (double)N*2*PI;
    printf("%8.20f\n", result);
}

int main(){
    long long N;
    scanf("%lld",&N);
    solve(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<iostream.h>
#define PI 22/7;

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

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

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Atcoder6 {

	public static void main(String[] args) throws IOException{
		// TODO Auto-generated method stub
		BufferedReader bfr= new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer str = new StringTokenizer(bfr.readLine());
		int R = Integer.parseInt(str.nextToken());
		double answer = 2*(3.141592)*R;
		System.out.println(answer);
	}

}


Compiler output:
Main.java:6: error: class Atcoder6 is public, should be declared in a file named Atcoder6.java
public class Atcoder6 {
       ^
1 error
Language: C++



int main(){


	const double PI=3.14159265358979323846;
	double r;
	cin >> r;

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



  return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: 'cin' was not declared in this scope
    8 |         cin >> r;
      |         ^~~
a.cc:10:9: error: 'cout' was not declared in this scope
   10 |         cout << 2* r * PI << endl;
      |         ^~~~
a.cc:10:30: error: 'endl' was not declared in this scope
   10 |         cout << 2* r * PI << endl;
      |                              ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(void){
int r;
cin>>r;
r*=M_PI;
cout<<r<<endl;

Compiler output:
a.cc: In function 'int main()':
a.cc:7:15: error: expected '}' at end of input
    7 | cout<<r<<endl;
      |               ^
a.cc:3:15: note: to match this '{'
    3 | int main(void){
      |               ^
Language: C

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define PI 3.14159
using namespace std;
// string mul(string a, string b)
// {
//     string res="";
//     int n=a.length();
//     int m=b.length();
//     int len=n+m-1;
//     int carry=0;
//     for(int i=len;i>=0;i--)
//     {
//         int tmp=0;
//         for(int j=n-1;j>=0;j--)
//             if(i-j<=m && i-j>=1)
//             {
//                 int a1=a[j]-48;
//                 int b1=b[i-j-1]-48;
//                 tmp+=a1*b1;
//             }
//             tmp+=carry;
//             carry=tmp/10;
//             res=(char)(tmp%10 + 48)+res;
//     }
//     while(res.length()>1 && res[0]=='0') res.erase(0,1);
//     return res;
// }
int main()
{
    // string p="314159265358979323846";
    // string n;
    // cin >> n;
    // string ans=mul(mul(n,"2"),p);
    // cout<<ans;
    ll n;
    cin >> n;
    ld c = n * 2 * PI;
    cout << c;
}

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>
typedef long long ll;
typedef long double ld;
using namespace std;
const int mod = 1e9 + 7;

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

Compiler output:
a.cc: In function 'int main()':
a.cc:10:17: error: 'pi' was not declared in this scope
   10 |     cout << 2*R*pi() << endl;
      |                 ^~
Language: C

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

int main() {
  float n,ans;
  cin >> n;
  ans = 2 * n * 3.141;
  cout << ans << 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 pi 3.141592654

int main() {
    long double x;
    cin>>x;
    x = 2*x*pi;
    cout<<setprecision(10)<<x<<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 <bits/stdc++.h>
using namespace std;
int main(){
int r;
  cin>>r;
  double p=3.141592;
  cout<<2*p*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: C

#include<bits/stdc++.h>
int main()
{
   // int a;
    double pi,ans,a;
    scanf("%lf",&a);
    pi=3.1415926;
    ans= 2*pi*a;
    printf("%.6lf\n",ans);
   // 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<bits/sdc++.h>
using namespace std;
int main()
{
 float a;
  cin>>a;
  cout<<M_PI * a * a<<endl;
}

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

#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define ok() puts(ok?"Yes":"No");
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> ii;
typedef vector<vi> vvi;
typedef vector<ii> vii;
typedef vector<bool> vb;
typedef vector<vb> vvb;
typedef set<int> si;
typedef map<string, int> msi;
typedef greater<int> gt;
typedef priority_queue<int, vector<int>, gt> minq;
typedef long long ll;
const ll LINF = 1e18L + 1;
const int INF = 1e9 + 1;
//clang++ -std=c++11 -stdlib=libc++ 

int main() {
  int R; cin >>R;
  double ans = R*2*M_PI;
  printf("%.10f\n", ans);
  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<math.h>
#include<iostream>
using namespace std;
 
int main(){
  float r;
  
  cin >> r;
  cout << 2*math.PI*r << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:13: error: 'math' was not declared in this scope
    9 |   cout << 2*math.PI*r << endl;
      |             ^~~~
Language: C

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int r,c;
	cin>>r;
	c=r*r*3.14159265
	cout<<c
	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>
using namespace std;


int main() {
  
  double R;
  cin>>R;
  
  cout<<R*2*M_PI<<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<bits/stdc++.h>

using namespace std;


int main(){
    float r;
    cin>>r;
    cout<<fixed<<setprecision(20)<<2*M_PI*r<<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;
#define rep(i,n) for(int i=0;i<n;i++)
#define PIE 3.141592653589
 int main(){
int n;
   cin>>n;
   cout<<(double)PIE*n*2<<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>
using namespace std;
int main(){
  long double res, r;
  cin>>r;
  res = 2* 3.14 * r;
  cout<<res<<endl;

Compiler output:
a.cc: In function 'int main()':
a.cc:7:19: error: expected '}' at end of input
    7 |   cout<<res<<endl;
      |                   ^
a.cc:3:11: note: to match this '{'
    3 | int main(){
      |           ^
Language: C

#include<bits/stdc++.h>
using namespace std;
int main()
{
    double r;
    scanf("%lf",&r);
    printf("%.18f\n",2*3.1415926535897932384626433*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>
using namespace std;
int main(){
int r;
  cin>>r;
  double p=3.141592;
  cout<<2*p*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<bits/stdc++.h>
using namespace std;

# define C continue;
# define R return

# define D double
# define I insert
# define ll long long
# define ld long double

# define ull unsigned long long
# define ui unsigned int

# define pb push_back
# define pf push_front

# define vi vector < int >
# define vc vector < char >
# define vs vector < string >
# define vb vector < bool >
# define vd vector < D >
# define vll vector < ll >
# define vull vector < ull >
# define vld vector < ld >
# define PQ priority_queue

# define vvi vector < vector < int > >
# define vvb vector < vector < bool > >
# define vvc vector < vector < char > >
# define vvs vector < vs >
# define vvll vector < vector < ll > >
# define vvd vector < vector < D > >
# define vvld vector < vector < ld > >

# define all(v) (v).begin() , (v).end()
# define allrev(v) (v).rbegin() , (v).rend()
# define allcomp(v) v.begin() , v.end() , comp
# define allrevcomp(v) v.rbegin() , v.rend() , comp

# define pii pair < int , int >
# define pll pair < ll , ll >
# define pld pair < ld , ld >
# define pDD pair < D , D >

# define vpld vector < pld >
# define vpii vector < pii >
# define vpll vector < pll >
# define vpDD vector < pDD >

# define vvpii vector < vector < pii > >
# define F first
# define S second
# define mp make_pair

# define dist(a,b,p,q) sqrt((p-a)*(p-a) + (q-b)*(q-b))

# define pp(n) printf("%.10Lf",n);
# define line cout<<"\n";
# define fast ios_base::sync_with_stdio(false) ; cin.tie(0) ; cout.tie(0);

string vow = "aeiou";
int month[] = {-1, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

const int dxhorse[] = {-2, -2, -1, -1, 1, 1, 2, 2};
const int dyhorse[] = {1, -1, 2, -2, 2, -2, 1, -1};

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

const ld pie = 3.1415926535897932384626 ;
const ll mod = 1e9 + 7 ;

/// Tip : If a and b are positive integers ; we may say - ceil (a/b) = 1 + floor ( (a-1)/b ) .

void solve ( int test_case )
{
    ld r ;
    cin >> r ;

    ld ans = 2 * pie * r ;
    pp ( ans ) ;
}

int main()
{
    int t = 1;
    // cin >> t;

    for ( int i=1 ; i <= t ; i ++ ) solve ( i ) ;
    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

public void main(){
  double R = 3;
  double e = 3.1415;
  double Answer = 2*e*R;
  System.out.plintln(Answer);
}

Compiler output:
Main.java:1: error: unnamed classes are a preview feature and are disabled by default.
public void main(){
       ^
  (use --enable-preview to enable unnamed classes)
1 error
Language: C++

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

int main(){
  int r;
  cin r;
  double ans = (double)r;
  ans*=M_PI*2.0;
  cout << ans << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:6: error: expected ';' before 'r'
    6 |   cin r;
      |      ^~
      |      ;
Language: C

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

int main(){
  int R;
  cin >> R;
  cout << 6.282*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: C

#include<iostream>
using namespace std;

int main()
{
    int r; cin>>r;
     double c=2*3.14159265*r;
    cout<<c;
    return 0;
}


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

#include <bits/stdc++.h>

using namespace std;

const double pi = 3.1415926;

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

using namespace std;

int main () 
{
  long double a;
  cin >> a;
  a *= 3.14159; 
  a *= 2;
  cout << a << '\n';
  }


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

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

int main(){
  int R;
  scanf("%d",&R);
  
  double circle;
  circle = 2 * R *　M_PI;
  
  printf("%d \n",circle);
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:9:19: error: stray '\343' in program
    9 |   circle = 2 * R *<U+3000>M_PI;
      |                   ^~~~~~~~
Language: C

#include <iostream>
#include <cstdio>
#include <fstream>
#include <algorithm>
#include <cmath>
#include <iomanip>
#include <deque>
#include <vector>
#include <queue>
#include <string>
#include <cstring>
#include <map>
#include <stack>
#include <set>
#include <sstream>
#define IOS ios_base::sync_with_stdio(0); cin.tie(0);
#define mod 1000000007
#define eps 1e-6
#define ll long long
#define INF 0x3f3f3f3f
#define MEM(x,y) memset(x,y,sizeof(x))
using namespace std;
int dt[][2]= {{1,0},{-1,0},{0,1},{0,-1},{0,0}};
//typedef pair<int, int> P;
//priority_queue<int, vector<int>, greater<int> > q;
int main()
{
   IOS;
   int r;
   cin >> r;
   double ans;
   double pi=acos(-1);
   ans=r*r*pi;
   cout<<fixed<<setprecision(2)<<ans;
}


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

#include <stdio.h>
using namespace std;

int main {
  
  int N;
  cin >> N;
  cout << N * 3.14 << endl;
}


Compiler output:
a.cc:4:5: error: cannot declare '::main' to be a global variable
    4 | int main {
      |     ^~~~
a.cc:6:3: error: expected primary-expression before 'int'
    6 |   int N;
      |   ^~~
a.cc:6:3: error: expected '}' before 'int'
a.cc:4:10: note: to match this '{'
    4 | int main {
      |          ^
a.cc:7:3: error: 'cin' does not name a type
    7 |   cin >> N;
      |   ^~~
a.cc:8:3: error: 'cout' does not name a type
    8 |   cout << N * 3.14 << endl;
      |   ^~~~
a.cc:9:1: error: expected declaration before '}' token
    9 | }
      | ^
Language: C

#include <bits/stdc++.h>

using namespace std;

int main()
{
    double pi = 3.141592653589793;
    double r;
    cin >> r;
    r = 2 * r;
    cout.precision(17);
    cout << fixed << (double)(r * pi) << 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: Java

package kickStart;
import java.util.*;
public class roundB {
public static void main(String []args) {
	Scanner sc = new Scanner (System.in);
	int r= sc.nextInt();
	double res=2*Math.PI*r;
	System.out.println(res);
}
}


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

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

int main(){
  const doule pi =acos(-1);
  int R;
  cin >> R;
  cout << 2*pi*R << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: 'doule' does not name a type; did you mean 'double'?
    5 |   const doule pi =acos(-1);
      |         ^~~~~
      |         double
a.cc:8:13: error: 'pi' was not declared in this scope
    8 |   cout << 2*pi*R << endl;
      |             ^~
Language: C

#include <bits/stdc++.h>
#include<vector>
using namespace std;
#define rep(i, n)        for(int i=0; i<(int)(n); ++i)
int main(){
    double a,b=acos(-1);
    cin>>a;
    cout<<fixed<<setprecision(12)<<a*2*b;
}

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 ll long long int 
#define mod 1000000007
#define se second
#define fi first
#define endl "\n"
#define pi 3.1415926535
using namespace std;
int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(0);cout.tie(0);
	double r;
	cin>>r;
	cout<<fixed<<setprecision(10);
	cout<<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

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

int main()
{
  float r;
  cin >> r;
  cout << 2.000000000 * r * 3.14159265358979 << 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()
{
	float a;
	int n;
	cin>>n;
	a=3.141592653589793116*n;
	cout<<a;
}

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<cstdio>
#include<iostream>
#include<bits/stdc++.h>
#include<vector>
#include<algorithm>
#include<string>
#include<cmath>
#include<iomanip>
using namespace std;

int main(){

        ios::sync_with_stdio(false);
        cin.tie(0);
	
	int n;
	cin >> n;
	
	double ans= 2*M_PI*n;
	cout<<setprecision(15)<<ans<<"\n";
	


	return 0;
}


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;
#define gearup ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);

#define pb push_back
#define F first
#define S second

#define all(v) v.begin(),v.end()
#define allr(v) v.rbegin(),v.rend()
#define int long long
#define ll long long
const int M=1e9+7;

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

int expo(int x, int y) {int res=1;x=x%M;while(y>0){if(y&1)res=(1ll*res*x)%M;
	y=y>>1;x=(1ll*x*x)%M;} return res;}
	

signed main(){
	gearup;
	int t = 1;
	//cin >> t;
	while(t--){
		int r;
		cin >> r;
		long double ans = 2 * 3.141592 * r ;
		cout << ans;
	}
	return 0;
}

Compiler output:
main.c:2:9: fatal error: bits/stdc++.h: No such file or directory
    2 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <iostream>
#include <vector>
#include <queue>
#include <stdlib.h>
#include <string.h>
#include <map> 
#include <algorithm>
#include <set>
using namespace std;
typedef vector<int> vi ;
typedef long long ll;
#define pb push_back
#define all(x) (x).begin() , (x).end() 
const double pi=3.141592653589793238462643383279502884;
int main(){	 
	int r ; 
	scnaf("%d" , &r ) ;
	printf("%lf\n" , pi*r*2);
	return 0 ;	
} 
 

Compiler output:
a.cc: In function 'int main()':
a.cc:17:9: error: 'scnaf' was not declared in this scope; did you mean 'scanf'?
   17 |         scnaf("%d" , &r ) ;
      |         ^~~~~
      |         scanf
Language: C

#include<bits/stdc++.h>
#define pb push_back
#define ll long long
#define f(i,a,b) for(int i=a;i<b;i++)
#define f1(i,a,b) for(int i=a;i<=b;i++)
#define w(x) int x; cin>>x; while(x--)
#define mo 998244353
#define d arr0.size()
#define ba back()
using namespace std;
ll p=748683265;
int main(){
	ll r;
  	cin>>r;
  	double l=2*(3.41592653589793238462);
  	double z=l*r;
  	cout<<fixed<<setprecision(21)<<z<<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 <stdio.h>
#include <iostream>

int main(){
    int n;
    #scanf("%d", &n);
    float ans;
  	cin >> n ;
    ans = 2 * n * 3.1415926;
    #printf("%.2f", ans);
  	cout << fixed << setprecision(2) << ans ;

    
}

Compiler output:
a.cc:6:6: error: invalid preprocessing directive #scanf
    6 |     #scanf("%d", &n);
      |      ^~~~~
a.cc:10:6: error: invalid preprocessing directive #printf
   10 |     #printf("%.2f", ans);
      |      ^~~~~~
a.cc: In function 'int main()':
a.cc:8:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    8 |         cin >> n ;
      |         ^~~
      |         std::cin
In file included from a.cc:2:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:11:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   11 |         cout << fixed << setprecision(2) << ans ;
      |         ^~~~
      |         std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:11:17: error: 'fixed' was not declared in this scope; did you mean 'std::fixed'?
   11 |         cout << fixed << setprecision(2) << ans ;
      |                 ^~~~~
      |                 std::fixed
In file included from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/bits/ios_base.h:1104:3: note: 'std::fixed' declared here
 1104 |   fixed(ios_base& __base)
      |   ^~~~~
a.cc:11:26: error: 'setprecision' was not declared in this scope
   11 |         cout << fixed << setprecision(2) << ans ;
      |                          ^~~~~~~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
// define #Asukaminato is cute
#define ll long long
#define rep(i, m) for (int i = 0; i < (int)(m); i++)
const int inf = 1000000000; // 10^9 Ten to the power of nine.

   int main() {
      int N,M ;
      cin>>N>>M;
      int sum=0;

      for (int i = 0; i < M; i++)
      {
         cin>>A[i]; sum+=A[i];
      }
      
      if(N>=sum){cout<<N-sum;}
      else{cout<<-1;}

   }
	


Compiler output:
a.cc: In function 'int main()':
a.cc:15:15: error: 'A' was not declared in this scope
   15 |          cin>>A[i]; sum+=A[i];
      |               ^
Language: C

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

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

  cout << 2*r*(M_PI);
}


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<<R*2*3.14
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:17: error: expected ';' before '}' token
    7 |   cout<<R*2*3.14
      |                 ^
      |                 ;
    8 | }
      | ~
Language: C

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int R;
  cin >> R;
  cout << (R*2)*3.14159265359 << 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 <bits/stdc++.h>
using namespace std;

int main(){
  float L;
  int R;
  cin >> R;
  L = R * 6.28;
  cout << L << 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 <bits/stdc++.h>
#define rep(i, n) for(int i = 0; i < (n); i++)
using namespace std;

signed main(void)
{
	double r;
	cin >> r;
	cout << fixed << setprecision(20) <<(double) r * 2 * 3.141592653589793 << 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.