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

#include <iostream>
#include <iomanip>
#include <unordered_map>
#include <set>
#include <fstream>
#include <cstring>
#include <climits>
#include <algorithm>
#include <math.h>
#include <vector>
using namespace std;

#define ll long long
#define mod 1000000007

int main() {

	double r;
	cin >> r;
	cout << setprecision(3) << 2 * 22 / 7 * r;



	return 0;
}

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

#pragma region
#include <bits/stdc++.h>
using namespace std;
inline void ci(void){
  return;
}
template <typename First, typename... Rest>
void ci(First& first, Rest&... rest){
  cin >> first;
  ci(rest...);
  return;
}
inline void co(void){
  cout << "\n";
  return;
}
template <typename First, typename... Rest>
void co(First first, Rest... rest){
  cout << first << " ";
  co(rest...);
  return;
}
#define ll long long
#define ld long double
#define st string
#define dl double
#define wh while
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define tp tuple
#define ft first
#define sc second
#define ve vector
#define tos to_string
#define len length
#define rt return 0
#define br break
#define con continue
#define lcm(n, m) (n * m / gcd(n, m))
#define np next_permutation
#define repi(i, m, n) for(int i=(int)(m);i<(int)(n);i++)
#define rep(i, n) repi(i, 0, n)
#define repill(i, m, n) for(ll i=(ll)(m);i<(ll)(n);i++)
#define repll(i, n) repill(i, 0, n)
#define revi(i, m, n) for(int i=(int)(m);i>(int)(n);i--)
#define rev(i, m) revi(i, m, 0)
#define revill(i, m, n) for(ll i=(ll)(m);i>(ll)(n);i--)
#define revll(i, n) revill(i, 0, n)
#define sz(v) ((int)(v).size()) 
#define each(i, n) for(auto&& i: n)
#define all(n) (n.begin(), n.end())
#define allr(n) (n.rbegin(), n.rend())
#define sp(n) cout << fixed << setprecision(n)
#pragma endregion
// sqrt ルート, int 2*10^9, gcd　最大公約数
// __builtin_popcount bitの個数

int main() {
  dl R;
  ci(R);
  sp(10);
  co(R * 6.28318530717958623200);
}

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(){
	double r;
  	cin>>r;
  	cout<<setprecision(2)<<2*pi*r;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:34: error: 'pi' was not declared in this scope
    7 |         cout<<setprecision(2)<<2*pi*r;
      |                                  ^~
Language: C

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

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


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

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

int main(){
    int R;
    cin >> R;
    cout << R*2*3.141592 << 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;
template<typename T1,typename T2> inline void chmin(T1 &a,T2 b){if(a>b) a=b;}
template<typename T1,typename T2> inline void chmax(T1 &a,T2 b){if(a<b) a=b;}
using Int = long long;
const char newl = '\n';


template<typename F>
struct FixPoint : F{
    FixPoint(F&& f):F(forward<F>(f)){}
    template<typename... Args>
    decltype(auto) operator()(Args&&... args) const{
        return F::operator()(*this,forward<Args>(args)...);
    }
};
template<typename F>
inline decltype(auto) MFP(F&& f){
    return FixPoint<F>{forward<F>(f)};
}

//INSERT ABOVE HERE
signed main(){
    cin.tie(0);
    ios::sync_with_stdio(0);

    int n;
    cin>>n;
    vector<int> cs(n);
    for(int i=0;i<n;i++) cin>>cs[i],cs[i]--;

    vector<vector<int>> G(n);
    for(int i=1;i<n;i++){
        int a,b;
        cin>>a>>b;
        a--;b--;
        G[a].emplace_back(b);
        G[b].emplace_back(a);
    }

    using ll = long long;
    ll all=0;
    vector<ll> cnt(n,0),sub(n,0);

    vector<ll> ans(n,(ll)n*(n-1)/2);
    MFP([&](auto dfs,int v,int p)->int{
        sub[v]=1;//nodes
        ll bfr=cnt[cs[v]];
        int soncnt = 0;
        for(int u:G[v]){
            if(u==p) continue;
            soncnt++;
            ll precv = cnt[cs[v]];
            //if (1==soncnt && pre)
            sub[v]+=dfs(u,v);
            ll nxt=sub[u]-(cnt[cs[v]]-precv);
            ans[cs[v]]-=(nxt-pre)*(nxt-pre-1)/2;//subtree of u which not go throw color cs[v]
        }
        cnt[cs[v]]=bfr+sub[v];
        all++;
        return sub[v];
    })(0,-1);

    for(int c=0;c<n;c++){
        ll pre=0,nxt=n-cnt[c];
        ans[c]-=(nxt-pre)*(nxt-pre-1)/2;
    }
    for(int c:cs) ans[c]++;

    for(ll a:ans) cout<<a<<newl;
    return 0;
}


Compiler output:
a.cc: In lambda function:
a.cc:57:30: error: 'pre' was not declared in this scope; did you mean 'pread'?
   57 |             ans[cs[v]]-=(nxt-pre)*(nxt-pre-1)/2;//subtree of u which not go throw color cs[v]
      |                              ^~~
      |                              pread
Language: C

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

int main() {
  	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 <bits/stdc++.h>
#define all(vec) vec.begin(), vec.end()
#define pb push_back
#define eb emplace_back
#define fi first
#define se second
using namespace std;
using ll = long long;
using P = pair<ll, ll>;
template <class T>
using V = vector<T>;
constexpr ll INF = (1LL << 30) - 1LL;
constexpr ll MOD = 998244353LL;
constexpr int dx[4] = {0, 1, 0, -1}, dy[4] = {1, 0, -1, 0};
template <class T>
void chmin(T &a, T b) { a = min(a, b); }
template <class T>
void chmax(T &a, T b) { a = max(a, b); }
void debug() { cerr << "ok" << endl; }
template <class T>
void printv(const vector<T> &v) {
    for (int i = 0; i < v.size(); i++) cout << v[i] << (i + 1 == v.size() ? '\n' : ' ');
}
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    double r;
    cin >> r;
    cout << 2 * r * M_PI << '\n';
}

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

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

typedef pair<int,int> P;
#define ll long long
#define ld long double
#define rep(i, n) for(int i = 0; i < (int)(n); i++)
#define PI 3.14159265358979323846
#define sz(x) ((int)(x).size())
#define chmin(x,y) x = min(x,y)
#define chmax(x,y) x = max(x,y)

const int INF = 1e9;
const int MOD = 1e9 + 7;
const ll LINF = 1e18;
int main()
{
    double r;
    cin >> r;
    cout << setprecision(11) << (double)2*r*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>
#include <math.h>
using namespace std;

int main() {
  	cin >> R;
    cout << 2*R*acro(-1) << 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 mp make_pair
#define pb(x) push_back(x)
#define vi vector<int>
#define vs vector<string>
#define vll vector<long long>
#define vc vector<char>
#define vs vector<string>
#define pii pair<int, int>
#define pll pair<long long, long long>
#define pil pair<int, long long>
#define pli pair<long long, int>
#define pcc pair<char, char>
#define pdd pair<double, double>
#define mll map<long long, long long>
#define sz(v) ((int)(v).size())
#define all(v) (v).begin(), (v).end()
#define flsh fflush(stdout)
#define gcd __gcd
#define clr(x) memset(x, 0, sizeof(x))
#define mod 1000000007LL
#define INF 1000000000007
 

typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;


void solve()
{
    ll r;
    cin>>r;
    // cout<<r<<"\n";
    ld ans=2.0*3.14159*r;
    cout<<ans<<"\n"; 
}


int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);


if (fopen("input.txt","r" ))
  {
     freopen("input.txt", "r", stdin);
     freopen("output.txt", "w", stdout);
  }
cout<<setprecision(20);


ll t=1;


// cin>>t;


while(t--)
{
solve();
} 


return 0;
}

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

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

int main() {
  	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<bits/stdc++.h>
using namespace std;
typedef long long ll;
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    int r;
    cin>>r;
    double ans;
    ans=2*M_PI*r;
    cout<<ans;
    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;
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    int r;
    cin>>r;
    double pi=3.141592;
    double ans=2*pi*r;
    cout<<ans;
    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;
    double circum = 2 * 3.14 * R;
    cout << circum << 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() {
    cout << fixed << setprecision(12);
    double R; cin >> R;
    cout << 2.0 * R * M_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: C

#include <iostream>
#include <vector>
#include <limits.h>
#include <algorithm>
#include <string>
#include <math.h>
#include <limits.h>
#include <queue>
#include <map>
#include <set>
#include <iomanip>
#include <bitset>
#include <cassert>
#include <random>
#include <functional>
#include <stack>
#include <iomanip>
#include <cassert>
//#include <boost/multiprecision/cpp_int.hpp>
#include <complex>
#include <cstdio>
#include <list>
#include <bitset>

//< in.txt > out.txt
using namespace std;
//std::ios::sync_with_stdio(false);
//std::cin.tie(0);
const long long MOD = 998244353;
const long long INF = 1e18;
typedef long long LL;
typedef long double LD;
typedef pair<LL, LL> PLL;
typedef pair<LD, LL> pdl;
typedef pair<LD, LD> pdd;
typedef vector<LL> VLL;
typedef vector<VLL> VVLL;
typedef unsigned long long ULL;
//typedef boost::multiprecision::cpp_int bigint;

int main() {
	std::ios::sync_with_stdio(false);
	std::cin.tie(0);
	LL R;
	cin >> R;
	cout << setprecision(12) << 2 * R * 3.14159265 << "\n";
	return 0;
}


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

#include <iostream>
#include <bits/stdc++.h>
#include <string>
#include <math.h>
#include <vector>
#include <algorithm>
using namespace std;
int main(){
    int r; cin>>r;
    double ans;
    ans= 2*r*3.14159;
    cout<<ans<<endl;
    return 0;
}

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

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

int main() {
  	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 <bits/stdc++.h>
using namespace std;

int main() {
  	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 <bits/stdc++.h>
#include <math.h>
 
#define rep(i, n) for(int i = 0; (int)(i) < n; i++)
 
using namespace std;
 
int main() {
  int R;
  cin >> R;
  float ans;
  ans = 2 * 3.14 * R;
  cout << ans << endl;
}
  

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

use std::io::*;
use std::str::FromStr;

pub fn read<T: FromStr>() -> T {
    let stdin = stdin();
    let stdin = stdin.lock();
    let token: String = stdin
        .bytes()
        .map(|c| c.expect("failed to read char") as char)
        .skip_while(|c| c.is_whitespace())
        .take_while(|c| !c.is_whitespace())
        .collect();
    token.parse().ok().expect("failed to parse token")
}

pub fn read_n<T: FromStr>(n: usize) -> Vec<T> {
    read_n_logic::<T>(n, vec![])
}

pub fn read_n_logic<T: FromStr>(n: usize, mut a: Vec<T>) -> Vec<T> {
    match n {
        0 => a,
        _ => {
            a.push(read::<T>());
            read_n_logic(n - 1, a)
        }
    }
}
use std::cmp::{max, min};

fn main() {
    let n: f64 = read();
    println!("{}", n * 2.0 * std::f64::consts::PI);
}


Compiler output:
main.c:1:1: error: unknown type name 'use'
    1 | use std::io::*;
      | ^~~
main.c:1:8: error: expected '=', ',', ';', 'asm' or '__attribute__' before '::' token
    1 | use std::io::*;
      |        ^~
main.c:2:1: error: unknown type name 'use'
    2 | use std::str::FromStr;
      | ^~~
main.c:2:8: error: expected '=', ',', ';', 'asm' or '__attribute__' before '::' token
    2 | use std::str::FromStr;
      |        ^~
main.c:4:1: error: unknown type name 'pub'
    4 | pub fn read<T: FromStr>() -> T {
      | ^~~
main.c:4:8: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'read'
    4 | pub fn read<T: FromStr>() -> T {
      |        ^~~~
main.c:16:1: error: unknown type name 'pub'
   16 | pub fn read_n<T: FromStr>(n: usize) -> Vec<T> {
      | ^~~
main.c:16:8: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'read_n'
   16 | pub fn read_n<T: FromStr>(n: usize) -> Vec<T> {
      |        ^~~~~~
main.c:20:1: error: unknown type name 'pub'
   20 | pub fn read_n_logic<T: FromStr>(n: usize, mut a: Vec<T>) -> Vec<T> {
      | ^~~
main.c:20:8: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'read_n_logic'
   20 | pub fn read_n_logic<T: FromStr>(n: usize, mut a: Vec<T>) -> Vec<T> {
      |        ^~~~~~~~~~~~
main.c:29:1: error: unknown type name 'use'
   29 | use std::cmp::{max, min};
      | ^~~
main.c:29:8: error: expected '=', ',', ';', 'asm' or '__attribute__' before '::' token
   29 | use std::cmp::{max, min};
      |        ^~
main.c:31:1: error: unknown type name 'fn'
   31 | fn main() {
      | ^~
main.c: In function 'main':
main.c:32:5: error: unknown type name 'let'
   32 |     let n: f64 = read();
      |     ^~~
main.c:32:10: error: expected '=', ',', ';', 'asm' or '__attribute__' before ':' token
   32 |     let n: f64 = read();
      |          ^
main.c:33:5: error: 'println' undeclared (first use in this function)
   33 |     println!("{}", n * 2.0 * std::f64::consts::PI);
      |     ^~~~~~~
main.c:33:5: note: each undeclared identifier is reported only once for each function it appears in
main.c:33:12: error: expected ';' before '!' token
   33 |     println!("{}", n * 2.0 * std::f64::consts::PI);
      |            ^
      |            ;
Language: C

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

const double PI = 3.14159;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int r;
    cin >> r;
    cout << fixed << setprecision(10) << 2*PI*r << endl;
}


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

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

main()
{
	float r;
  	cin>>r;
  	cout<<(2*M_PI)*r
}

Compiler output:
a.cc:4:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    4 | main()
      | ^~~~
a.cc: In function 'int main()':
a.cc:8:25: error: expected ';' before '}' token
    8 |         cout<<(2*M_PI)*r
      |                         ^
      |                         ;
    9 | }
      | ~
Language: C

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

typedef vector<vector<int>> vvi;
typedef vector<int> vi;
typedef vector<string> vs;
typedef vector<vector<string>> vvs;
typedef vector<ll> vll;

typedef pair<int, int> pii;

typedef queue<int> qi;
typedef queue<string> qs;


#define rep(i, n) for(int i=0; i<(n); ++i)
#define repp(i, a, b) for(int i = (a); i <= (b); i++)
#define Rep(i, n) for(int i=n; i >= 0; i--)

#define all(v) v.begin(), v.end()
//sort( all(v) )　などと使える


int main(){
    int r; cin >> r;
    
    double ans = 2 * 3.1415 * r;

    cout << ans << endl;
}

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

//header{{{
#pragma GCC optimize("Ofast")
#include<bits/stdc++.h>
//#include<boost/multiprecision/cpp_int.hpp>
//#include<boost/math/common_factor_rt.hpp>
//#include<boost/multiprecision/cpp_dec_float.hpp>
  
using namespace std;
//using namespace boost;
//using namespace multiprecision;  

#define rep(i,n) for(int i=0;i<(n);++i)
#define reps(i,n) for(int i=1;i<=(n);++i)
#define all(x) (x).begin(),(x).end()
#define Fixed fixed << setprecision(12)
//#define int int64_t
using pii = pair<int,int>;
constexpr int INF  = 0x3f3f3f3f;
constexpr long long LINF = 0x3f3f3f3f3f3f3f3fLL;
constexpr int mod1 = 1e9+7; 
constexpr int mod2 = 998244353;

template <class A, class B> inline bool chmax(A &a, const B &b) { return b > a && (a = b, true); }
template <class A, class B> inline bool chmin(A &a, const B &b) { return b < a && (a = b, true); }

template <class T> using min_heap = priority_queue<T,vector<T>,greater<T> >;
template <class T> using max_heap = priority_queue<T>;
template <class A, class B> using umap = unordered_map<A,B>;
  
inline int square(int a){ return a * a;}
inline int updiv(int a,int b){ return (a + b - 1) / b; }

template <class A, class B> inline int Max(const A &a, const B &b){ return (a < b ? b : a); }
template <class A, class B> inline int Min(const A &a, const B &b){ return (a > b ? b : a); }

int gcd(int a,int b){ return b ? gcd(b,a % b) : a;}

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


signed main(){
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);

    int r;
    cin >> r;

    cout << r * 2 * M_PI << '\n';

    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

/*-- ILSH  --*/
#include "bits/stdc++.h"
using namespace std;
typedef long long int ll;
#define pb push_back 
#define pop pop_back
#define mp make_pair
#define vii vector < int >
#define vll vector < ll > 
#define pii pair < int , int >
#define pll pair < ll , ll >
#define vpi vector < pii >
#define vpl vector < pll >
#define fi first
#define sz size 
#define len length 
#define se second 

const ll mod = 1e9+7;
const ll inf=1e18+1e17;
//const ll mod = 998244353;

ll modInverse(ll a,ll m){ll m0=m;ll y=0,x=1;if(m == 1)return 0;while(a> 1){ll q=a/m;ll t=m;m=a%m,a=t;t=y;y=x-q*y;x=t;}if(x<0)x+=m0;return x;}  
ll powm(ll a,ll b){a=a%mod;ll res=1;while(b){if(b&1)res=(res*a)%mod;a=(a*a)%mod;b>>=1;}return (res%mod);}

const ll N=1e5+6;
const long double pi=3.14159265358979323;

void solve(){


	long double r ;
	cin>>r;
	r=2*pi*r;
	cout<<setprecision(6)<<fixed;
	cout<<r<<'\n';







}


int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
    ll t=1;
//	cin>>t;
    for (int i=1;i<=t;i++){
    //	cout<<"Case #"<<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

#define _USE_MATH_DEFINES
#include <iomanip>
#include <iostream>
#include <vector>
#include <string>
#include <stack>
#include <queue>
#include <map>
#include <tuple>
#include <climits>
#include <algorithm>
#include <cmath>
using namespace std;

typedef long long LL;
typedef vector<int> VI;
typedef vector<double> VD;
typedef vector<LL> VLL;
typedef vector<string> VS;
typedef vector<bool> VB;
typedef vector<vector<int>> VVI;
typedef vector<vector<long long>> VVLL;
typedef vector<vector<bool>> VVB;
typedef vector<vector<double>> VVD;

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

const int MOD = 1000000007;

template<class T>bool chmax(T &a, const T &b){
	if(a<b){
		a=b;
		return true;
	}
	return false;
}

template<class T>bool chmin(T &a, const T &b){
	if(a>b){
		a=b;
		return true;
	}
	return false;
}

void debug(VI &arr){
	int n=arr.size();
	rep(i,n){
		cout<<arr.at(i)<<endl;
	}
}

void debug(VVI &board){
	int h = board.size();
	int w = board.at(0).size();
	rep(i,h){
		rep(j,w){
			cout << board.at(i).at(j) << " ";
		}
		cout<<endl;
	}
}

void debug(VVLL &board){
	int h = board.size();
	int w = board.at(0).size();
	rep(i,h){
		rep(j,w){
			cout<<board.at(i).at(j)<<" ";
		}
		cout<<endl;
	}
}

void debug(VS &board){
	int h = board.size();
	rep(i,h){
		cout<<board.at(i)<<endl;
	}
	return;
}

LL gcd(LL a,LL b){
	return b==0?a:gcd(b,a%b);
}

LL lcm(LL a,LL b){
	return a*b/gcd(a,b);
}

int main(){
	//cout<<fixed;
	//cout<<setprecision(9)<<...
	double r;
	cin>>r;
	cout<<fixed;
	cout<<setprecision(4)<<2*acos(-1)*r<<endl;
	return 0;
}


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

#include <bits/stdc++.h>

using namespace std;
int main(){

  int r;
  cin >> r;
  float pi = 3.1415926;
  
  float res = (float)(2*pi*r);
  cout << res << "\n";

Compiler output:
a.cc: In function 'int main()':
a.cc:11:23: error: expected '}' at end of input
   11 |   cout << res << "\n";
      |                       ^
a.cc:4:11: note: to match this '{'
    4 | int main(){
      |           ^
Language: C++

#inlcude <bits/stdc++.h>

using namespace std;
int main(){

  int r;
  cin >> r;
  float pi = 3.141592653589793;
  // to find circumstance of a circle use formula 2pir
  float res = (float)(2*pi*r);
  cout << res << "\n";

Compiler output:
a.cc:1:2: error: invalid preprocessing directive #inlcude; did you mean #include?
    1 | #inlcude <bits/stdc++.h>
      |  ^~~~~~~
      |  include
a.cc: In function 'int main()':
a.cc:7:3: error: 'cin' was not declared in this scope
    7 |   cin >> r;
      |   ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | #inlcude <bits/stdc++.h>
a.cc:11:3: error: 'cout' was not declared in this scope
   11 |   cout << res << "\n";
      |   ^~~~
a.cc:11:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:11:23: error: expected '}' at end of input
   11 |   cout << res << "\n";
      |                       ^
a.cc:4:11: note: to match this '{'
    4 | int main(){
      |           ^
Language: C



import java.io.*;
import java.util.Scanner;

public class Main {
    public static void main (String[] args) {
    	double pi = Math.PI;
    	Scanner scanner = new Scanner(System.in);
    	double x = scanner.nextDouble();
    	//scanner.nextLine();
    	System.out.println(2*pi*x);
    }
}

Compiler output:
main.c:3:1: error: unknown type name 'import'
    3 | import java.io.*;
      | ^~~~~~
main.c:3:12: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
    3 | import java.io.*;
      |            ^
main.c:4:1: error: unknown type name 'import'
    4 | import java.util.Scanner;
      | ^~~~~~
main.c:4:12: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
    4 | import java.util.Scanner;
      |            ^
main.c:6:1: error: unknown type name 'public'
    6 | public class Main {
      | ^~~~~~
main.c:6:14: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'Main'
    6 | public class Main {
      |              ^~~~
Language: C

import numpy as np
import math
import scipy as sp
import queue
import collections

MOD = 10 ** 9 + 7
INF = 10 ** 9

def main(kwargs):
    r = kwargs["r"]
    res = 2 * r * math.pi
    return res

if __name__ == "__main__":
    kwargs = {}

    cin = input().split()
    #kwargs["n"] = cin[0]
    #kwargs["n"], kwargs["k"] = cin
    kwargs["r"] = [int(i) for i in cin][0]
    #kwargs["n"], kwargs["k"] = [int(i) for i in cin]

    cout = main(kwargs)
    print(cout)

Compiler output:
main.c:1:1: error: unknown type name 'import'
    1 | import numpy as np
      | ^~~~~~
main.c:1:14: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'as'
    1 | import numpy as np
      |              ^~
main.c:1:14: error: unknown type name 'as'
main.c:18:5: warning: data definition has no type or storage class
   18 |     cin = input().split()
      |     ^~~
main.c:18:5: error: type defaults to 'int' in declaration of 'cin' [-Wimplicit-int]
main.c:18:11: error: implicit declaration of function 'input' [-Wimplicit-function-declaration]
   18 |     cin = input().split()
      |           ^~~~~
main.c:18:18: error: request for member 'split' in something not a structure or union
   18 |     cin = input().split()
      |                  ^
main.c:19:6: error: invalid preprocessing directive #kwargs
   19 |     #kwargs["n"] = cin[0]
      |      ^~~~~~
main.c:20:6: error: invalid preprocessing directive #kwargs
   20 |     #kwargs["n"], kwargs["k"] = cin
      |      ^~~~~~
main.c:21:5: error: expected ',' or ';' before 'kwargs'
   21 |     kwargs["r"] = [int(i) for i in cin][0]
      |     ^~~~~~
main.c:22:6: error: invalid preprocessing directive #kwargs
   22 |     #kwargs["n"], kwargs["k"] = [int(i) for i in cin]
      |      ^~~~~~
Language: C

#include <bits/stdc++.h>
#define F first
 #define S second
#define PB push_back
#define MP make_pair
#define ll long long int

#define PI 3.14159


using namespace std;

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



	int r;
	
	cin >> r;
	
	float a;
	
	a = (float) 2 * PI * r;
	
	cout << a << "\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

import java.util.*;
public class Main{
     Scanner in = new Scanner(System.in);
      double PI = 2 * Math.acos(0.0);
      public static void main(String []args){
        int r = in.nextInt();
        System.out.println(2 * PI * r);
      }
    }

Compiler output:
Main.java:6: error: non-static variable in cannot be referenced from a static context
        int r = in.nextInt();
                ^
Main.java:7: error: non-static variable PI cannot be referenced from a static context
        System.out.println(2 * PI * r);
                               ^
2 errors
Language: Java

public class Main{
  Scanner in = new Scanner(System.in);
  double PI = 2 * Math.acos(0.0);
  public static void main(String []args){
    int r = in.nextInt();
    System.out.println(2 * PI * r);
  }
}

Compiler output:
Main.java:2: error: cannot find symbol
  Scanner in = new Scanner(System.in);
  ^
  symbol:   class Scanner
  location: class Main
Main.java:2: error: cannot find symbol
  Scanner in = new Scanner(System.in);
                   ^
  symbol:   class Scanner
  location: class Main
Main.java:5: error: non-static variable in cannot be referenced from a static context
    int r = in.nextInt();
            ^
Main.java:6: error: non-static variable PI cannot be referenced from a static context
    System.out.println(2 * PI * r);
                           ^
4 errors
Language: C

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

int main(void) {
  double x,R;
  
  printf("enter number");
  scanf("%lf",&R);
  
  x = 2*R*M_PI;
  
  printf("%f",x);
  
  return 0;
  |

Compiler output:
main.c: In function 'main':
main.c:15:3: error: expected expression before '|' token
   15 |   |
      |   ^
main.c:15:3: error: expected declaration or statement at end of input
Language: C

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

int main(void) {
  double x,R;
  
  printf("enter number");
  scanf("%lf",&R);
  
  x = 2*R*PI;
  
  printf("%f",x);
  
  return 0;
  |

Compiler output:
main.c: In function 'main':
main.c:10:11: error: 'PI' undeclared (first use in this function)
   10 |   x = 2*R*PI;
      |           ^~
main.c:10:11: note: each undeclared identifier is reported only once for each function it appears in
main.c:15:3: error: expected expression before '|' token
   15 |   |
      |   ^
main.c:15:3: error: expected declaration or statement at end of input
Language: C

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

int main(void) {
  double x,R;
  
  printf("enter number");
  scanf("%lf",&R);
  
  x = 2*R*PI;
  
  printf("%f",&x);
  
  return 0;
  |

Compiler output:
main.c: In function 'main':
main.c:10:11: error: 'PI' undeclared (first use in this function)
   10 |   x = 2*R*PI;
      |           ^~
main.c:10:11: note: each undeclared identifier is reported only once for each function it appears in
main.c:15:3: error: expected expression before '|' token
   15 |   |
      |   ^
main.c:15:3: error: expected declaration or statement at end of input
Language: C

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

int main(void) {
  double x,R;
  
  printf("enter number");
  scanf("%d",&R);
  
  x = 2*R*PI;
  
  printf("%f",&x);
  
  return 0;
  |

Compiler output:
main.c: In function 'main':
main.c:10:11: error: 'PI' undeclared (first use in this function)
   10 |   x = 2*R*PI;
      |           ^~
main.c:10:11: note: each undeclared identifier is reported only once for each function it appears in
main.c:15:3: error: expected expression before '|' token
   15 |   |
      |   ^
main.c:15:3: error: expected declaration or statement at end of input
Language: C

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

int main(void) {
  double x,R;
  
  printf("enter number");
  scanf("%d",R);
  
  x = 2*R*PI;
  
  printf("%f",x);
  
  return 0;
  |

Compiler output:
main.c: In function 'main':
main.c:10:11: error: 'PI' undeclared (first use in this function)
   10 |   x = 2*R*PI;
      |           ^~
main.c:10:11: note: each undeclared identifier is reported only once for each function it appears in
main.c:15:3: error: expected expression before '|' token
   15 |   |
      |   ^
main.c:15:3: error: expected declaration or statement at end of input
Language: C

#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
using namespace std;
typedef long long ll;
#define debug(x) cout << #x << " = " << x << '\n'
#define debug_arr(a , n) for(int i = 0 ; i < n ; i++)cout << a[i] << " "
#define speed ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define mp make_pair
#define pb push_back
#define ff first
#define ss second
#define vi vector<int>
#define vll vector<ll> 
#define inf 1000000000
#define mod 1000000007

const int max_n = 1e5 + 9;

typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> indexed_set;
ll power(ll a , ll b)
{
    ll prod = 1;
    while(b)
    {
        if(b&1)
        prod = (prod*a)%mod;
        a = (a*a)%mod;
        b >>= 1;
    }
    return prod;
}
int main()
{
    int n;
    cin >> n;
    double PI = 3.141592653589793238;
    printf("%lf" , 2*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>
using namespace std;

int main() {
  int r;
  cin >> r;
  cout << 2*r*M_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: C

r = int(input)
  
print(2*r*3.14)

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

#include <cmath>
#includ e<iostream>
using namespace std;
int main()
{
  int R;
  cin >> R;
  cout << 2*R*M_PI << endl;
  return 0;
}


Compiler output:
a.cc:2:2: error: invalid preprocessing directive #includ; did you mean #include?
    2 | #includ e<iostream>
      |  ^~~~~~
      |  include
a.cc: In function 'int main()':
a.cc:7:3: error: 'cin' was not declared in this scope
    7 |   cin >> R;
      |   ^~~
a.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    1 | #include <cmath>
  +++ |+#include <iostream>
    2 | #includ e<iostream>
a.cc:8:3: error: 'cout' was not declared in this scope
    8 |   cout << 2*R*M_PI << endl;
      |   ^~~~
a.cc:8:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:8:23: error: 'endl' was not declared in this scope
    8 |   cout << 2*R*M_PI << endl;
      |                       ^~~~
a.cc:2:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
    1 | #include <cmath>
  +++ |+#include <ostream>
    2 | #includ e<iostream>
Language: C

#include <bits/stdc++.h>
using namespace std;
int main() {
  double R;
  cin >> R;
  printf("%f\n",2*R*3.141592);
  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 java.util.Scanner;

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

		System.out.println(2 * r * Math.PI);
		sc.close();
	}
	
}

Compiler output:
main.c:1:1: error: unknown type name 'import'
    1 | import java.util.Scanner;
      | ^~~~~~
main.c:1:12: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
    1 | import java.util.Scanner;
      |            ^
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 {
      |              ^~~~
Language: C

#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(auto i = (a); i < (b); i++)
#define iter(it,c) for(auto it = (c).begin(); it != (c).end(); ++it)
typedef long long ll;
typedef vector<int> vi;
typedef pair<int,int> ii;
typedef vector<ii> vii;
const int INF = ~(1<<31);
#define fs first
#define sc second
#define pb push_back

const double EPS = 1e-9;
const double pi = acos(-1);
typedef unsigned long long ull;
typedef vector<vi> vvi;
typedef vector<vii> vvii;
template <class T> T smod(T a, T b) {
    return (a % b + b) % b;
}

int main() {
    cin.sync_with_stdio(false);
    double r;
    cin >> r;
    cout << setprecision(15) << fixed << 2*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: C

#include<bits/stdc++.h>
using namespace std;
const double pi = 3.14159265359;
int r;
int main(){
  scanf("%d", &r);
  double ans = 2 * pi * r;
  printf("%.15f", ans);
  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 () {
     r;
    cin >> r;
    cout <<2 * r * M_PI;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:6: error: 'r' was not declared in this scope
    5 |      r;
      |      ^
Language: C

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

int main(){
    float r;
    cin >> r;
    cout << fixed << setprecision(10) << 2*3.14*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>
using namespace std;

int main(){
	double R;
	cin >> R;
	printf("%.10lf\n",R*3.14159*2.0);
	return 0;
}

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

import java.io.*;
import java.util.*;
import java.lang.*;
import java.math.*;
public class Circle{

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int R=in.nextInt();
		in.close();
		double result=(2*Math.PI)*R;
		System.out.println(result);
	}

}


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

	import java.io.*;
import java.util.*;
import java.lang.*;
import java.math.*;
public class Circle Pond {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int R=in.nextInt();
		in.close();
		double result=(2*Math.PI)*R;
		System.out.println(result);
	}

}


Compiler output:
Main.java:5: error: '{' expected
public class Circle Pond {
                   ^
1 error
Language: Java

import java.util.Scanner;

public class Palace {
	public static void main(String args[]) {
		Scanner scan = new Scanner(System.in);
     	int R=in.nextInt();
      	double result=(2*Math.PI)*R;
		System.out.println(result);
    }
}

Compiler output:
Main.java:3: error: class Palace is public, should be declared in a file named Palace.java
public class Palace {
       ^
Main.java:6: error: cannot find symbol
     	int R=in.nextInt();
     	      ^
  symbol:   variable in
  location: class Palace
2 errors
Language: Java

package Math;
import java.io.*;
import java.util.*;
import java.lang.*;
import java.math.*;
public class Circle{

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int R=in.nextInt();
		in.close();
		double result=(2*Math.PI)*R;
		System.out.println(result);
	}

}


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

package Math;
import java.io.*;
import java.util.*;
import java.lang.*;
import java.math.*;
public class circumference_Circle {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int R=in.nextInt();
		in.close();
		double result=(2*Math.PI)*R;
		System.out.println(result);
	}

}


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

import java.io.*;
import java.util.*;
import java.lang.*;
public class circumference_Circle {

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int R=in.nextInt();
		in.close();
		double result=(2*Math.PI)*R;
		System.out.println(result);
	}

}


Compiler output:
Main.java:4: error: class circumference_Circle is public, should be declared in a file named circumference_Circle.java
public class circumference_Circle {
       ^
1 error
Language: C

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

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 'public'
    2 | public class Main {
      | ^~~~~~
main.c:2:14: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'Main'
    2 | public class Main {
      |              ^~~~
Language: C


#include <iostream>
#include <algorithm>
#include <deque>
#include <iterator>
#include <list>
#include <map>
#include <memory>
#include <queue>
#include <set>
#include <stack>
#include <utility>
#include <vector>
#include <string>
#include <iostream>
using namespace std;
using Graph = vector<vector<int>>;
using ll = long long;
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define all(v) v.begin(), v.end()

int main() {
    int a;
    double b;
    cin >> a;
    b = a * 2 * 3.1415926;
    cout << b << endl;
}

  

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


#include <iostream>
#include <algorithm>
#include <deque>
#include <iterator>
#include <list>
#include <map>
#include <memory>
#include <queue>
#include <set>
#include <stack>
#include <utility>
#include <vector>
#include <string>
#include <iostream>
using namespace std;

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

  

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


#include <iostream>
#include <algorithm>
#include <deque>
#include <iterator>
#include <list>
#include <map>
#include <memory>
#include <queue>
#include <set>
#include <stack>
#include <utility>
#include <vector>
#include <string>
#include <iostream>
using namespace std;
using Graph = vector<vector<int>>;
using ll = long long;
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define all(v) v.begin(), v.end()

int main() {
    int a;
    double b;
    cin >> a;
    b = a * 2 * 3.141592;
    cout << b << endl;
}

  

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

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

int main(){
//srandom((unsigned long)time(NULL));

int r;
cin>>r;
cout<<(double)r*2*M_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: C

parseInt(x)=parse(Float64, x)
parseMap(x::Array{SubString{String},1})=map(parseInt, x)

function main()
	r = readline() |> parseInt
	println(pi*2.0*r)
end

main()

Compiler output:
main.c:1:1: warning: data definition has no type or storage class
    1 | parseInt(x)=parse(Float64, x)
      | ^~~~~~~~
main.c:1:1: error: type defaults to 'int' in declaration of 'parseInt' [-Wimplicit-int]
main.c:1:1: error: parameter names (without types) in function declaration [-Wdeclaration-missing-parameter-type]
main.c:1:1: error: function 'parseInt' is initialized like a variable
main.c:1:13: error: implicit declaration of function 'parse'; did you mean 'parseInt'? [-Wimplicit-function-declaration]
    1 | parseInt(x)=parse(Float64, x)
      |             ^~~~~
      |             parseInt
main.c:1:19: error: 'Float64' undeclared here (not in a function); did you mean 'float'?
    1 | parseInt(x)=parse(Float64, x)
      |                   ^~~~~~~
      |                   float
main.c:1:28: error: 'x' undeclared here (not in a function)
    1 | parseInt(x)=parse(Float64, x)
      |                            ^
main.c:2:1: error: expected ',' or ';' before 'parseMap'
    2 | parseMap(x::Array{SubString{String},1})=map(parseInt, x)
      | ^~~~~~~~
main.c:2:39: error: expected identifier or '(' before ')' token
    2 | parseMap(x::Array{SubString{String},1})=map(parseInt, x)
      |                                       ^
Language: C

include<bits/stdc++.h>
using namespase std

int main(){
long long r;
cin>>r;
cout<<(r*2)*3.141592653589793238463<<endl;
}

Compiler output:
main.c:1:8: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    1 | include<bits/stdc++.h>
      |        ^
Language: C

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

template<typename A, typename B> bool chmin(A &a, const B &b){ return b < a && (a = b, true); }
template<typename A, typename B> bool chmax(A &a, const B &b){ return a < b && (a = b, true); }

int main(){
  double r;
  cin >> r;
  cout << 2 * r * 3.14159265 << '\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>

#define LL long long int 
#define ii pair<int, int>
#define x first
#define y second
#define vi vector<int>
#define vvi vector<vi>
#define vii vector<ii>
#define mp make_pair
#define pb push_back
#define INF int(1e9)
#define MOD 1000000007
#define TAM int(2e5)

using namespace std;

int main () {
    ios_base::sync_with_stdio(false);

    cout << setprecision(9);

    int r;

    cin >> r;

    cout << (double)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.