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

#include <bits/stdc++.h>
using namespace std;
int main()
{
	int n;
	cin>>n;
	cout<<6.28*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: Java

/* package codechef; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
public class Codechef
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner input = new Scanner(System.in);
		float n = input.nextFloat();
		 
		System.out.println(Math.PI * n *n);
	}
}


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

//#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<long long> vll;
typedef vector<bool> vb;
#define pb push_back
#define fi first
#define se second
#define in insert
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define speed ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
const int mod = 1e9 + 7;
void solve(){
    double r;
    cin >> r;
    cout << fixed << setprecision(6) << 2.0 * acos(-1) * r;
}
int main(){
    speed;
    int t = 1;
    //cin >> t;
    for (int i = 1; i <= t; ++i) {
        solve();
    }
}

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

import math
r = int(input("Enter a radius value: "))
c = 2*math.pi*r
print(c)


Compiler output:
main.c:1:1: error: unknown type name 'import'
    1 | import math
      | ^~~~~~
main.c:2:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'r'
    2 | r = int(input("Enter a radius value: "))
      | ^
Language: C

#include<iostream>
using namespace std;
int(main){
  int R,A;
  cin>> R;
  A=R*2*3.14159265358979323846;
  cout<< A <<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<bits/stdc++.h>
#include<unordered_map>
using namespace std;
#define ll long long
#define all(x) (x).begin(),(x).end()
#define rep(i, n) for(ll i = 0; i < n; i++)
const ll INF = 100100100100;
const ll MOD = 1000000007;


ll combination(ll n, ll r){
    if(n < r) return 0;
    if(r == 0||r == n) return 1;
    else if(r == 1) return n;
    return (combination(n - 1, r - 1) + combination(n - 1, r));
}

bool checkKaibun(string str){
    string checkStr = str;
    reverse(checkStr.begin(), checkStr.end());
    if(str == checkStr) return true;
    else return false;
}

int keta(ll num){
    int digits = 0;
    while(num > 0){
        num /= 10;
        digits++;
    }
    return digits;
}


ll mpow(ll x, ll n){//繰り返し二乗法 計算量O(logN)
    ll ans = 1;
    while(n != 0){
        if(n&1) ans = ans * x % MOD;
        x = x * x % MOD;
        n  = n >> 1;
    }
    return ans;
}

int gcd(int a, int b){
    if(a % b == 0) return b;
    else return (gcd(b, a%b));
}



int main(){
    int R;
    cin >> R;
    cout << std::setprecision(6) << R * 2 * 3.1415926535 << 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 <iostream>
#include <math.h>

using namespace std;

double r,PI;
int main()
{
    cin>>r;
    r=r*2;
    PI=3.14159265358979323846;
    cout<<r*PI;
}


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

#include <iostream>
#define _USE_MATH_DEFINES
#include <math.h>
using namespace std;

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

	cout << float(R * 2 * M_PI) << endl;
}

Compiler output:
a.cc:6:1: error: '::main' must return 'int'
    6 | void main() {
      | ^~~~
Language: C

//                             .
//                            .:.
//                            :|:
//                           .:|:.
//                           ::|::
//            :.             ::|::             .:
//            :|:.          .::|::.          .:|:
//            ::|:.         :::|:::         .:|:;
//            `::|:.        :::|:::        .:|::'
//             ::|::.       :::|:::       .::|:;
//             `::|::.      :::|:::      .::|::'
//              :::|::.     :::|:::     .::|::;
//              `:::|::.    :::|:::    .::|::;'
//     `::.      `:::|::.   :::|:::   .::|::;'     .:;'
//      `:::..    `;::|::.  :::|:::  .::|:::    ::::;
//        `:::::.    ':|::. :::|::: .::|:'   ,::::;'
//          `:::::.    ':|:::::|:::::|:'   :::::;'
//            `:::::.:::::|::::|::::|::::.,:::;'
//               ':::::::::|:::|:::|:::::::;:'
//                  ':::::::|::|::|:::::::''
//                       `::::::::::;'
//                      .:;'' ::: ``::.
//                           :':':
//                             ;                             

//             ,d                                                  
//             88                                                  
// ,adPPYba, MM88MMM ,adPPYba,  8b,dPPYba,   ,adPPYba, 8b,dPPYba,  
// I8[    ""   88   a8"     "8a 88P'   `"8a a8P_____88 88P'   "Y8  
//  `"Y8ba,    88   8b       d8 88       88 8PP""""""" 88          
// aa    ]8I   88,  "8a,   ,a8" 88       88 "8b,   ,aa 88          
// `"YbbdP"'   "Y888 `"YbbdP"'  88       88  `"Ybbd8"' 88  

// ++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++ 
// ++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++ 

//#include <boost/multiprecision/cpp_int.hpp>
//using namespace boost::multiprecision;
#include <bits/stdc++.h>
#define ll long long
#define llu unsigned long long
#define ld long double
#define pb push_back
#define mp make_pair
#define MOD 1000000007
#define PI 3.14159265358979323846
#define all(x) x.begin(), x.end()
#define allr(x) x.rbegin(), x.rend()
#define deb(x) cerr << ">> " << #x << " : " << x << "\n" // never forget to comment out
#define endl '\n'
#define RAGE ios::sync_with_stdio(0); cin.tie(0);

using namespace std;

const ll inf = 1e18 + 42;

const ll MAX = 1e9;

void solve()
{
	ll r;
	cin >> r;
	ld ans = 2 * PI * r;
	cout << ans << endl;
}	

int main()
{
	RAGE
	// #ifndef ONLINE_JUDGE
 //    	freopen("input.txt", "r", stdin);
 //    	freopen("output.txt", "w", stdout);
	// #endif
	ll t;
	//cin >> t;
	//while(t--)
		solve();
	return 0;
}

Compiler output:
main.c:39:10: fatal error: bits/stdc++.h: No such file or directory
   39 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: Java

import java.util.Scanner;

public class main {
	static int R;
	static double L;
	public static void main(String args[]){
		Scanner scanner =new Scanner(System.in);
		System.out.println("R");
		R=scanner.nextInt();
		L=R*2*3.14;
		System.out.println(L);
	}
}


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

//                             .
//                            .:.
//                            :|:
//                           .:|:.
//                           ::|::
//            :.             ::|::             .:
//            :|:.          .::|::.          .:|:
//            ::|:.         :::|:::         .:|:;
//            `::|:.        :::|:::        .:|::'
//             ::|::.       :::|:::       .::|:;
//             `::|::.      :::|:::      .::|::'
//              :::|::.     :::|:::     .::|::;
//              `:::|::.    :::|:::    .::|::;'
//     `::.      `:::|::.   :::|:::   .::|::;'     .:;'
//      `:::..    `;::|::.  :::|:::  .::|:::    ::::;
//        `:::::.    ':|::. :::|::: .::|:'   ,::::;'
//          `:::::.    ':|:::::|:::::|:'   :::::;'
//            `:::::.:::::|::::|::::|::::.,:::;'
//               ':::::::::|:::|:::|:::::::;:'
//                  ':::::::|::|::|:::::::''
//                       `::::::::::;'
//                      .:;'' ::: ``::.
//                           :':':
//                             ;                             

//             ,d                                                  
//             88                                                  
// ,adPPYba, MM88MMM ,adPPYba,  8b,dPPYba,   ,adPPYba, 8b,dPPYba,  
// I8[    ""   88   a8"     "8a 88P'   `"8a a8P_____88 88P'   "Y8  
//  `"Y8ba,    88   8b       d8 88       88 8PP""""""" 88          
// aa    ]8I   88,  "8a,   ,a8" 88       88 "8b,   ,aa 88          
// `"YbbdP"'   "Y888 `"YbbdP"'  88       88  `"Ybbd8"' 88  

// ++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++ 
// ++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++ 

//#include <boost/multiprecision/cpp_int.hpp>
//using namespace boost::multiprecision;
#include <bits/stdc++.h>
#define ll long long
#define llu unsigned long long
#define ld long double
#define pb push_back
#define mp make_pair
#define MOD 1000000007
#define PI 3.14159265358979323846
#define all(x) x.begin(), x.end()
#define allr(x) x.rbegin(), x.rend()
#define deb(x) cerr << ">> " << #x << " : " << x << "\n" // never forget to comment out
#define endl '\n'
#define RAGE ios::sync_with_stdio(0); cin.tie(0);

using namespace std;

const ll inf = 1e18 + 42;

const ll MAX = 1e9;

void solve()
{
	ll r;
	cin >> r;
	ld ans = 2 * PI * r;
	cout << ans << endl;
}	

int main()
{
	RAGE
	#ifndef ONLINE_JUDGE
    	freopen("input.txt", "r", stdin);
    	freopen("output.txt", "w", stdout);
	#endif
	ll t;
	//cin >> t;
	//while(t--)
		solve();
	return 0;
}

Compiler output:
main.c:39:10: fatal error: bits/stdc++.h: No such file or directory
   39 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

#include<bits/stdc++.h>
using namespace std;
int main(){
	int n;
	cin>>n;
	double a=n*2.0*3.14;
	cout<<fixed<<setprecision(2)<<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 <bits/stdc++.h>
using namespace std;

int main() {
  double N;
  cin >> N;
  cout << 2 * N * 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 <stdio.h>
void main()
{
int r=0;
int S;
  cin >> r;
  S = ( r + r ) * 3.14;
  cout << S;  
  return 0;
}

Compiler output:
a.cc:2:1: error: '::main' must return 'int'
    2 | void main()
      | ^~~~
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope
    6 |   cin >> r;
      |   ^~~
a.cc:8:3: error: 'cout' was not declared in this scope
    8 |   cout << S;
      |   ^~~~
Language: C

R = int(input())

m = 2 * R * 3.14

print(m)

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<stdio.h>

int main(void) {
	int n, m;
	int a[100];

	scanf_s("%d%d", &n, &m);

	for (int i = 0; i < m; i++) {
		scanf_s("%d", &a[i]);
	}

	for (int i = 0; i < m; i++) {
		n -= a[i];
		if (n < 0) {
			printf("-1\n");
			return 0;
		}
	}

	printf("%d\n", n);

	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:9: error: implicit declaration of function 'scanf_s'; did you mean 'scanf'? [-Wimplicit-function-declaration]
    7 |         scanf_s("%d%d", &n, &m);
      |         ^~~~~~~
      |         scanf
Language: C

#include <stdio.h>

int main(){
    int c = 0, r, pi = 3,14;
    scanf("%d", &r);
    c = 2*r*pi;

    printf("%d", c);

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:26: error: expected identifier or '(' before numeric constant
    4 |     int c = 0, r, pi = 3,14;
      |                          ^~
Language: C

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

int main(){
    int r;
    cin >> r;
    cout << M_PI * (2 * 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;
typedef long long ll;
typedef pair<ll, ll> P;
const ll MOD = 1e9+7;
const ll INF = 1e18;
#define rep(i,m,n) for(int i = (m); i <= (n); i++)
#define zep(i,m,n) for(int i = (m); i < (n); i++)
#define rrep(i,m,n) for(int i = (m); i >= (n); i--)
#define print(x) cout << (x) << endl;
#define printa(x,m,n) for(int i = (m); i <= n; i++){cout << (x[i]) << " ";} cout<<endl;

int main(){
	cin.tie(0); ios::sync_with_stdio(false);
	
	ll r; cin >> r;
	cout << fixed << setprecision(20) << 2*r*3.141592653 << 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

import math

R = int(input())

print(2 * math.pi * R)

Compiler output:
main.c:1:1: error: unknown type name 'import'
    1 | import math
      | ^~~~~~
main.c:3:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'R'
    3 | R = int(input())
      | ^
Language: C

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include<iostream>
using namespace std;
int main(){
	int x;
	cin>>x;
    float s=1;
    float pi=0;
    float i=1.0;
    float n=1.0;
    while(fabs(i)>=1e-6){
        pi+=i;
        n=n+2;
        s=-s; 
        i=s/n;
    }
    pi=4*pi*x*2;
    printf("%.20f\n",pi);
    return 0;
}

Compiler output:
main.c:4:9: fatal error: iostream: No such file or directory
    4 | #include<iostream>
      |         ^~~~~~~~~~
compilation terminated.
Language: C

#include<bits/stdc++.h>
using namespace std;
int a;
float c;
int main()
{
    cin>>a;
    c=2*a*3.14;
    cout<<c*1.0;
}


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>
#include <cmath>
#include <algorithm>
#include <string>
#include <vector>
#include <set>
using namespace std;
 
int main(){
    double R;

    cin >> R;

    cout << 2 * R * 3.141592 << 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>
#include <numbers>
#include<cmath>
using namespace std;

int main(){
	int r;

	cin>>r;

	cout<<r*2*numbers::pi<<endl;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:19: error: 'numbers' has not been declared
   11 |         cout<<r*2*numbers::pi<<endl;
      |                   ^~~~~~~
Language: C

#include<iostream>
#include<string>
#include<algorithm>    
#include<cmath>
#include<map>
#include<vector>
#include<math.h>
#include<stdio.h>
#include<stack>
#include<queue>
#include<tuple>
#include<cassert>
#include<set>
//#include<bits/stdc++.h>
#define int long long
using namespace std;
const int INF = 1000000000000000000;
const int mod = 1000000007;
int test[345678], aa[345678][2];
signed main() {
	int n, m, cnt = 0, ans = 0; string s, t; 
	cin >> n;
	printf("%f\n", n * 2 * 3.141592);
	return 0;
}

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

#define _LIBCPP_DEBUG 0
#include <bits/stdc++.h>
using namespace std;
const double PI=3.14159265358979323846;
int main()
{
    double r;
    cin >> r;
    cout << (double)2.0 * r * PI << 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;
 
int main(){
  int R;
  cin >> R;
  cout << R*3.14159 << 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 <utility>
#include <vector>
#include <queue>
#include <stack>
#include <array>
#include <algorithm>
#include <numeric>
#include <limits>
#include <string>
#include <regex>
#include <cstdio>
#include <cstring>
#include <cmath>
using namespace std;
using ll = long long;

int main()
{
    double r;
    cin >> r;
    cout << r * 6.28318530717958623200 << 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(){
    int R;
    double pi=;
    pi = 3.1415926535;
    cin>>R;
    cout<<2*R*pi<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:15: error: expected primary-expression before ';' token
    6 |     double pi=;
      |               ^
Language: C

#include<bits/stdc++.h>
using namespace std;
#define ll long long
int main()
{
    int r;
    cin>>r;
    cout<<2*3.1416*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

import math
r = int(input("Enter a radius value: "))
# check value constraint
while r<1 or r>100:
    r = int(input("Please enter a radius value between 1 ot 100: "))

c = 2*math.pi*r
print(c)


Compiler output:
main.c:1:1: error: unknown type name 'import'
    1 | import math
      | ^~~~~~
main.c:2:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'r'
    2 | r = int(input("Enter a radius value: "))
      | ^
main.c:3:3: error: invalid preprocessing directive #check
    3 | # check value constraint
      |   ^~~~~
Language: C

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

#define pi acos(-1)

int main()
{
    float n;
    cin>>n;
    printf("%.5f\n",2*n*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 <bits/stdc++.h>
using namespace std;

int main() {
    int R;
    cin >>  R;
    cout << R*6.28 << 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 <stdio.h>
#include <stdlib.h>
#include <math.h>
#include<iostream>
using namespace std;
int main(){
	int x;
	cin>>x;
    float s=1;
    float pi=0;
    float i=1.0;
    float n=1.0;
    while(fabs(i)>=1e-6){
        pi+=i;
        n=n+2;
        s=-s; 
        i=s/n;
    }
    pi=4*pi*x;
    printf("%.30f\n",pi);
    return 0;
}

Compiler output:
main.c:4:9: fatal error: iostream: No such file or directory
    4 | #include<iostream>
      |         ^~~~~~~~~~
compilation terminated.
Language: C

include Math
r = gets.to_f
puts r*2*PI

Compiler output:
main.c:1:1: error: unknown type name 'include'
    1 | include Math
      | ^~~~~~~
main.c:2:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'r'
    2 | r = gets.to_f
      | ^
Language: C

#include<bits/stdc++.h>
using namespace std;
int main(){
	int n;
	cin>>n;
	double a=n*2.0*3.14;
	cout<<fixed<<setprecision(20)<<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<iostream>
using namespace std;

int main(){
	int R;
	cin >> R;
	unsight long  long ans;
	ans = R*2*3.14;
	cout << ans << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: 'unsight' was not declared in this scope
    7 |         unsight long  long ans;
      |         ^~~~~~~
a.cc:8:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
    8 |         ans = R*2*3.14;
      |         ^~~
      |         abs
Language: C

#include<bits/stdc++.h>
using namespace std;
int main(){
	int n;
	cin>>n;
	double a=n*2.0*3.141592653589793;
	cout<<fixed<<setprecision(20)<<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<bits/stdc++.h>
# define PI           3.14159265358979323846  /* pi */
using namespace std;
int main()
{
    double n;
    cin>>n;
    cout<<setprecision(23)<<2*n*PI<<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 <stdio.h>
#include <stdlib.h>
#include <math.h>
#include<iostream>
using namespace std;
int main(){
	int x;
	cin>>x;
    float s=1;
    float pi=0;
    float i=1.0;
    float n=1.0;
    while(fabs(i)>=1e-6){
        pi+=i;
        n=n+2;
        s=-s; 
        i=s/n;
    }
    pi=4*pi*x;
    printf("%.10f\n",pi);
    return 0;
}

Compiler output:
main.c:4:9: fatal error: iostream: No such file or directory
    4 | #include<iostream>
      |         ^~~~~~~~~~
compilation terminated.
Language: C

/* ****TCIITB**** */

#include<bits/stdc++.h>
#define io          ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0); 
#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
#define time        cerr << "\nTime elapsed: " << 1000 * clock() / CLOCKS_PER_SEC << "ms\n";
using namespace std;

#define N  100005

int main()
{
    
    io
    
    long double pi=acos(-1);
    ll r;
    cin>>r;
    long double res=(1*r)*(2*pi);
    cout<<fixed<<setprecision(21)<<res;
}

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


import java.util.Scanner;
public class Revision {

	static Scanner s=new Scanner(System.in);
	public static void main(String[] args) {{
		
	double r=s.nextDouble();
	System.out.println("the circumference = "+ 2*3.14*r);

	  }
}
	}
	



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

#include<iostream>
#include<cmath>
using namespace std;
int main()
{
  long  double s;
    int r;
    cin>>r;
    s=(acos(-1));
    s=s*2*r;
    cout<<s<<endl;
}


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

import scipy

print(2*scipy.pi*int(input()))

Compiler output:
main.c:1:1: error: unknown type name 'import'
    1 | import scipy
      | ^~~~~~
main.c:3:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'print'
    3 | print(2*scipy.pi*int(input()))
      | ^~~~~
Language: C

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

int main() {
    int R;
    cin >> R;
    cout << R*6.28318530717958623200 << 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>

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


Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |   cin >> r;
      |   ^~~
      |   std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:6:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    6 |   cout << r*2*3.141592 << 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:6:27: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    6 |   cout << r*2*3.141592 << endl;
      |                           ^~~~
      |                           std::endl
In file included from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C

import math
R = int(input(""))
C = 2 * math.pi * R
print(C)

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

#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
#define REP(i,s,n) for(int i=s; i<(n); ++i)
#define ALL(n) begin(n),end(n)
using ll = long long;
const ll INF = numeric_limits<ll>::max();
const double PI = 3.14159265;

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

    cout << fixed << setprecision(10);
    cout << 2 * PI * R << 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 <iostream>
#include <algorithm>
#include <vector>
#define PI 3.14159265358979323846
using namespace std;
using ll = long long;
using P = pair<int,int>;

int main() {
int r;
cin >> r;
double l;
l = 2 *r * PI;
    cout << fixed << setprecision(20);
    cout << l << endl;

return 0;

}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:22: error: 'setprecision' was not declared in this scope
   14 |     cout << fixed << setprecision(20);
      |                      ^~~~~~~~~~~~
a.cc:4:1: note: 'std::setprecision' is defined in header '<iomanip>'; this is probably fixable by adding '#include <iomanip>'
    3 | #include <vector>
  +++ |+#include <iomanip>
    4 | #define PI 3.14159265358979323846
Language: C++

#include <string>
#include <iomanip>

using namespace std;

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

  const double pi = 3.14159265358979323846;

  double ans;
  ans = 2*pi*N;

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

}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: 'cin' was not declared in this scope
    8 |   cin >> N;
      |   ^~~
a.cc:3:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    2 | #include <iomanip>
  +++ |+#include <iostream>
    3 | 
a.cc:15:3: error: 'cout' was not declared in this scope
   15 |   cout << setprecision(15) << ans << endl;
      |   ^~~~
a.cc:15:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
Language: C

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

int main() {
    int R;
    cin >>  R;
    cout << 2*R*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>
using namespace std;
#include <string>
#include <vector>
#include <algorithm>
#include <map>
typedef long long ll;
#include <cmath>
#include <iomanip>



int main(int argc, char *argv[])
{
	double n;
	cin >>n;
	
	cout<< setprecision(10)<<n*3.14159265258979323*2<<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 <stdio.h>
#include <math.h>


int main(void){
    int R;
    double ans;

    scanf_s("%d", &R);
    ans = 2*M_PI*R;

    printf("%f", ans);

    return 0;
    
}

Compiler output:
main.c: In function 'main':
main.c:9:5: error: implicit declaration of function 'scanf_s'; did you mean 'scanf'? [-Wimplicit-function-declaration]
    9 |     scanf_s("%d", &R);
      |     ^~~~~~~
      |     scanf
Language: C

// smashes the table and leave

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

double x,y,z;

int main() {
	cin >> x;
	cout << 2*3.141592653589793238462643383279502884197169399*x << "\n";
	return 0;
}

Compiler output:
main.c:3:10: fatal error: bits/stdc++.h: No such file or directory
    3 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C


using namespace std;

int main (){
  int R;
  cin>>R;
  cout<<R*6.2830<<endl;
}


Compiler output:
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:6:3: error: 'cin' undeclared (first use in this function)
    6 |   cin>>R;
      |   ^~~
main.c:6:3: note: each undeclared identifier is reported only once for each function it appears in
main.c:7:3: error: 'cout' undeclared (first use in this function)
    7 |   cout<<R*6.2830<<endl;
      |   ^~~~
main.c:7:19: error: 'endl' undeclared (first use in this function)
    7 |   cout<<R*6.2830<<endl;
      |                   ^~~~
Language: C++

#include <bits/stdc++.h>

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

Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    7 |   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:8:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    8 |   cout << 2 * r * M_PI << 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:8:27: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    8 |   cout << 2 * r * M_PI << 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 <stdio.h>
void main();
{
int r=0;
int S;
  cin >> r;
  S = ( r + r ) * 3.14;
cout << S;  
}

Compiler output:
a.cc:2:1: error: '::main' must return 'int'
    2 | void main();
      | ^~~~
a.cc:3:1: error: expected unqualified-id before '{' token
    3 | {
      | ^
Language: C++

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

int main(){
  double a;
  cin>>a;
  cout<<fixed;
  cout<<setprecision(9)<<2*355*a/113;
  

Compiler output:
a.cc: In function 'int main()':
a.cc:9:9: error: 'setprecision' was not declared in this scope
    9 |   cout<<setprecision(9)<<2*355*a/113;
      |         ^~~~~~~~~~~~
a.cc:3:1: note: 'std::setprecision' is defined in header '<iomanip>'; this is probably fixable by adding '#include <iomanip>'
    2 | #include<cmath>
  +++ |+#include <iomanip>
    3 | using namespace std;
a.cc:9:38: error: expected '}' at end of input
    9 |   cout<<setprecision(9)<<2*355*a/113;
      |                                      ^
a.cc:5:11: note: to match this '{'
    5 | int main(){
      |           ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int R;
  double pi = 3.14159265358979;
  cin >> R;
  cout << 2*R*Ppi << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:15: error: 'Ppi' was not declared in this scope; did you mean 'pi'?
    8 |   cout << 2*R*Ppi << endl;
      |               ^~~
      |               pi
Language: C

#include<iostream>
#include <iomanip>

int main()
{using namespace std;

    double r;
    cin>>r;
    cout.precision(5);
  float cir = 3.1416 * (r * 2);
   
    cout<<cir;
    return 0;
}


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

import math
r = int(input())
R = r * math.pi
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 'r'
    2 | r = int(input())
      | ^
Language: C

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

int main(){
	int n;
	cin>>n;
	double x=2*n*3.14159265358979323846;
	
	cout<<fixed<<setprecision(20)<<x<<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.h>
#include<math.h>

using namespace std;

int main()
{
	int n;
    cin>>n;
    cout<<(float)2*M_PI*n;

	return 0;
}


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

#include <bits/stdc++.h>
using namespace std;
#pragma warning(disable : 4996)
#define gc getchar_unlocked
#define fo(i, n) for (i = 0; i < n; i++)
#define ll long long
#define si(x) scanf("%d", &x)
#define sl(x) scanf("%I64d", &x)
#define ss(s) scanf("%s", s)
#define pb push_back
#define em emplace_back
#define mp make_pair
#define F first
#define S second
#define endl '\n'
#define clr(x) memset(x, 0, sizeof(x))
#define PI 3.1415926535897932384626
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<pii> vpii;
typedef vector<pll> vpll;
typedef vector<vi> vvi;
typedef vector<vl> vvl;
const int mod = 1e9 + 7;
int epow(int base, int pow)
{
    int result = 1;
    while (pow)
    {
        if (!(pow % 2))
        {
            base = (base * base) % mod;
            pow /= 2;
        }
        else
        {
            result = (result * base) % mod;
            pow--;
        }
    }
    return result;
}
int main(void)
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n;
    si(n);
    double d = 2 * n * PI;
    cout << d;
}

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>
void main()
  {
  float r:
  float circum;
  circum = 2*3.14*r;
  printf("%f",circum);
  }

Compiler output:
main.c: In function 'main':
main.c:4:10: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
    4 |   float r:
      |          ^
main.c:4:10: error: expected expression before ':' token
main.c:6:3: error: 'circum' undeclared (first use in this function)
    6 |   circum = 2*3.14*r;
      |   ^~~~~~
main.c:6:3: note: each undeclared identifier is reported only once for each function it appears in
main.c:6:19: error: 'r' undeclared (first use in this function)
    6 |   circum = 2*3.14*r;
      |                   ^
Language: C

#include <iostream>
#include <vector>
#include <algorithm>
#include <functional>
#include <cmath>
#include <map>

#define reps(i,s,n) for(int (i) = (s); (i) < (n); (i)++)
#define rep(i,n) reps(i,0,n)
using namespace std;
using ll = long long;

int main(){
    float ans;
    float r;
    cin >> r;
    ans = 2* 3.14159263 * r;
    printf("%.6f\n",ans);

    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;
#define pi 3.141592654

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


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

package Rivision;
import java.util.Scanner;
public class Revision {

	static Scanner s=new Scanner(System.in);
	public static void main(String[] args) throws IOException {{
		
	double r=s.nextDouble();
	System.out.println("the circumference = "+ 2*3.14*r);
}
}
	}
	




Compiler output:
Main.java:3: error: class Revision is public, should be declared in a file named Revision.java
public class Revision {
       ^
Main.java:6: error: cannot find symbol
	public static void main(String[] args) throws IOException {{
	                                              ^
  symbol:   class IOException
  location: class Revision
2 errors
Language: C++

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

using namespace std;
typedef long long LL;
const double pi=3.14159265359

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

  return 0;
}


Compiler output:
a.cc:8:1: error: expected ',' or ';' before 'int'
    8 | int main(){
      | ^~~
Language: C++

#inclde <stdio.h>
void main();
{
int r=0;
int S;
  cin >> r;
  S = ( r + r ) * 3.14;
cout << S;  
}

Compiler output:
a.cc:1:2: error: invalid preprocessing directive #inclde; did you mean #include?
    1 | #inclde <stdio.h>
      |  ^~~~~~
      |  include
a.cc:2:1: error: '::main' must return 'int'
    2 | void main();
      | ^~~~
a.cc:3:1: error: expected unqualified-id before '{' token
    3 | {
      | ^
Language: C

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

int main(){
    int r;
    short length;

    scanf("%d", &r);
    
    length = 2 * M_PI * r
    printf("%hd", &length);

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:10:26: error: expected ';' before 'printf'
   10 |     length = 2 * M_PI * r
      |                          ^
      |                          ;
   11 |     printf("%hd", &length);
      |     ~~~~~~
Language: C

#include<iostream>

using namespace std;
using ll = long long;

int main() {
	int N;
	double pi = 3.14159265359;
	cin>>N;
	cout<<2*pi*N<<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<stdio.h>
#include<conio.h>
void mian()
  {
  float r,c;
c=2*3.14*r;
 scanf("%f",&r);
printf("%f",c);
}



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

#include<bits/stdc++.h>
using namespace std;
int main(){
	int r;
	cin>>r;
	double x=2*r*3.14159265358979323846;
	cout<<fixed<<setprecision(20)<<x<<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 <bits/stdc++.h>
using namespace std;

int main() {
int r;
  cin>>r;
  cout<<r*3.14*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<bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define REP(i,s,n) for(int i=(s);i<(n);i++)
#define repr(i,n) for(int i=n-1;i>=0;i--)
#define REPR(i,s,n) for(int i=(s);i>=(n);i--)
#define all(a) (a).begin(),(a).end()
#define rall(a) (a).rbegin(),(a).rend()
#define pb push_back
#define pf push_front
const int mod = 1e9 + 7;
const double pi = acos(-1.0);
typedef long long ll;
typedef vector<ll> vll;
typedef vector<int> vi;
int main(){
    double r; cin >> r;
    cout << 2*pi*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<bits/stdc++.h>

int main(){
	int R;
	cin >> R;
	long ans;
	ans = R*2*3.14;
	cout << ans << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |         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 << ans << 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:8:24: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    8 |         cout << ans << 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;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define ll long long
int main (){
    int N,M;
    cin >> N >> M;
    vector<int> A(M);
    rep(i, M){
        cin >>A.at(i);
    }
    int sum =0 ;
    rep(i,M){
        sum+=A.at(i);
    }
    int ans = N-sum;
    cout << ans ;
 
    
}
#include<bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define ll long long
int main (){
    int N,M;
    cin >> N >> M;
    vector<int> A(M);
    rep(i, M){
        cin >>A.at(i);
    }
    int sum =0 ;
    rep(i,M){
        sum+=A.at(i);
    }
    int ans = N-sum;
    if(ans>0){
      cout << ans ;
    }else{ 
      cout << -1;
    }
    
}


Compiler output:
a.cc:25:5: error: redefinition of 'int main()'
   25 | int main (){
      |     ^~~~
a.cc:5:5: note: 'int main()' previously defined here
    5 | int main (){
      |     ^~~~
Language: C

#include <stdio.h>

int main(){
  float r;
  scanf("%f", &r);
  prinft("%f\n", r*2*3.141592);
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:3: error: implicit declaration of function 'prinft'; did you mean 'printf'? [-Wimplicit-function-declaration]
    6 |   prinft("%f\n", r*2*3.141592);
      |   ^~~~~~
      |   printf
Language: Java

import java.util.*;
public class Solution {
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:2: error: class Solution is public, should be declared in a file named Solution.java
public class Solution {
       ^
1 error
Language: C

#include<bits/stdc++.h>
using namespace std;
int main(){
	int n;
	cin>>n;
	double a=n*2.0*3.1415926535897932384626433832795028841971;
	cout<<fixed<<setprecision(20)<<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<iostream>
#include<math.h>

using namespace std;

int main()
{
	int n;
    cin>>n;
    cout<<(float)2*M_PI*n;

	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;
#define rep(i,l,r) for(int i = l; i < (r); i++)
#define pb push_back
#define ALL(a) a.begin(), a.end()
#define fastio ios::sync_with_stdio(0);cin.tie(0)
using ll = long long;
using ull = unsigned long long;

int main() {
  fastio;
  int R; cin >> R;
  cout << 2*atan(1)*4*R << endl
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:32: error: expected ';' before '}' token
   13 |   cout << 2*atan(1)*4*R << endl
      |                                ^
      |                                ;
   14 | }
      | ~
Language: C

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

int main() {
  double a, b;
  cin >> a;
  b = 2 * a * 3.1415;
  cout << b << 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

#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
#define REP(i,s,n) for(int i=s; i<(n); ++i)
#define ALL(n) begin(n),end(n)
using ll = long long;
const ll INF = numeric_limits<ll>::max();
const double PI = 3.14159265;

int main(){
    double R;
    cin >> R;
    cout << 2 * PI * R << 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++


using namespace std;
 
int main() {
  int R;
    
    
    
    cout <<R*2*3.14 << endl;
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:5: error: 'cout' was not declared in this scope
    9 |     cout <<R*2*3.14 << endl;
      |     ^~~~
a.cc:1:1: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | 
a.cc:9:24: error: 'endl' was not declared in this scope
    9 |     cout <<R*2*3.14 << endl;
      |                        ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 |
Language: C

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

int main() {
	// your code goes here
	float r;
	cin>>r;
	float c=2*3.14*r;
	cout<<fixed<<setprecision(20)<<c<<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 <cmath>
int main() {
	double r;
    std::cin >> r;
    std::cout << r*2*3.141592653589793<< std::endl;
}

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

r = gets.to_i
puts (2*r*3.141592)

Compiler output:
main.c:1:1: warning: data definition has no type or storage class
    1 | r = gets.to_i
      | ^
main.c:1:1: error: type defaults to 'int' in declaration of 'r' [-Wimplicit-int]
main.c:1:5: error: 'gets' undeclared here (not in a function)
    1 | r = gets.to_i
      |     ^~~~
main.c:2:1: error: expected ',' or ';' before 'puts'
    2 | puts (2*r*3.141592)
      | ^~~~