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

#include <iostream>
#include <algorithm>
#include <vector>
#include <string>
#include <cmath> //abs();
using namespace std;

int main(void)
{
    long long int b,c,d,i,j,k,n,x[100];
    long double wa=0,seki=1,a;
    char C1,C2;
    string s;

    cin >> n;
    if(n==1){
        cin >>a;
        cout << a;
        return;
    }

    for(i=0;i<n;i++){
        cin >> a;
        wa += a;
        seki *= a;
    }

    cout << seki/wa;

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:9: error: return-statement with no value, in function returning 'int' [-fpermissive]
   19 |         return;
      |         ^~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#ifdef _IS_LOCAL //
#define dout cout
#define debug() if (true)
#define dvout(v) vout(v)
#else
#define dout   \
	if (false) \
	cout
#define debug() if (false)
#define dvout if(false) cout
#endif //
#define next asdnext
#define prev asdprev
#define rep(i, n) for (int i = 0, i##_len = (n); i < i##_len; ++i)
#define vrep(i, v) for (auto &i : v)
#define all(x) (x).begin(), (x).end()
#define vout(v)           \
	for (auto &i : v)     \
	{                     \
		cout << i << " "; \
	}                     \
	cout << "\n"; //配列出力
#define vin(v)        \
	for (auto &i : v) \
		cin >> i; //配列入力
#define vecin(v,n)	\
	vec(v,n);		\
	vin(v);
#define vec(v, n) vector<int> v(n, 0);
#define mod (int)(1e9+7)
typedef long long ll;
typedef unsigned long long ull;
void Main()
{
	int N;
	cin>>N;
	vec(a,N);
	vin(a);

	dvout(a);

	double ans=0;
	rep(i,N){
		ans += 1.0/a[i];
	}
	ans = 1/ans;

	cout<<ans<<endl;
}
 
int main()
{
	cin.tie(nullptr);
	ios_base::sync_with_stdio(false);
	cout << std::fixed << std::setprecision(15);
	Main();
	return 0;
}

Compiler output:
a.cc: In function 'void Main()':
a.cc:42:14: error: no match for call to '(std::ostream {aka std::basic_ostream<char>}) (std::vector<int>&)'
   42 |         dvout(a);
      |              ^
Language: C++

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

int main() {
  int N;
  cin>>N;
  vector<int>a(N);
  for(int i=0;i<N;i++){
    cin>>a.at(i);
  }
  int sum=0;
  for(int i=0;i<N;i++){
    sum+=1.0/a.at(i)
  }
  ans=1.0/sum
    cout<<ans<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:21: error: expected ';' before '}' token
   13 |     sum+=1.0/a.at(i)
      |                     ^
      |                     ;
   14 |   }
      |   ~                  
a.cc:15:3: error: 'ans' was not declared in this scope; did you mean 'abs'?
   15 |   ans=1.0/sum
      |   ^~~
      |   abs
Language: C++

#include<cstdio>

int main(){
  int n;
  scanf("%d", n);
  
  int a[n];
  for(int i=0; i<n; i++){
    scanf("%d", n[i]);
  }
  double ans = 0;
  for(int i=0; i<n; i++){
    ans += 1 / a[i];
  }
  	printf("%d", 1/ans);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:18: error: invalid types 'int[int]' for array subscript
    9 |     scanf("%d", n[i]);
      |                  ^
Language: Java

/*
Stay innocent, be naive. 
But still dream big. 
Dream big to the point that it is beyond your ability and endeavour to achieve it. 
So dream big and don’t lose your innocence.
*/
import java.util.*;
import java.io.*;

   public class B
   {
      public static void main(String args[]) throws Exception
      {
         BufferedReader infile = new BufferedReader(new InputStreamReader(System.in));  
         StringTokenizer st = new StringTokenizer(infile.readLine());
         int N = Integer.parseInt(st.nextToken());
         int[] arr = new int[N];
         st = new StringTokenizer(infile.readLine());
         for(int i=0; i < N; i++)
            arr[i] = Integer.parseInt(st.nextToken());
         double res = 0.0;
         for(int a: arr)
            res += 1.0/a;
         res = 1/res;
         System.out.println(res);
      }
   }

Compiler output:
Main.java:10: error: class B is public, should be declared in a file named B.java
   public class B
          ^
1 error
Language: C

#include <stdio.h>
int main(){
  int n;
  double res;
  double *a;
  scanf("%d\n",&n);
  a=(double*)malloc(n*sizeof(double));
  res=0;
  for (int i=0;i<n;i++){
    scanf("%lf",&a[i]);
    res=res+1/a[i];
  }
  res=1/res;
  printf("%f\n",res);
  free(a);

Compiler output:
main.c: In function 'main':
main.c:7:14: error: implicit declaration of function 'malloc' [-Wimplicit-function-declaration]
    7 |   a=(double*)malloc(n*sizeof(double));
      |              ^~~~~~
main.c:2:1: note: include '<stdlib.h>' or provide a declaration of 'malloc'
    1 | #include <stdio.h>
  +++ |+#include <stdlib.h>
    2 | int main(){
main.c:7:14: warning: incompatible implicit declaration of built-in function 'malloc' [-Wbuiltin-declaration-mismatch]
    7 |   a=(double*)malloc(n*sizeof(double));
      |              ^~~~~~
main.c:7:14: note: include '<stdlib.h>' or provide a declaration of 'malloc'
main.c:15:3: error: implicit declaration of function 'free' [-Wimplicit-function-declaration]
   15 |   free(a);
      |   ^~~~
main.c:15:3: note: include '<stdlib.h>' or provide a declaration of 'free'
main.c:15:3: warning: incompatible implicit declaration of built-in function 'free' [-Wbuiltin-declaration-mismatch]
main.c:15:3: note: include '<stdlib.h>' or provide a declaration of 'free'
main.c:15:3: error: expected declaration or statement at end of input
Language: C++

#include <bits/stdc++.h>

#define REP(i, a, b) for (int i = (a); i < (b); i++)
#define REPR(i, a, b) for (int i = (a); i >= (b); i--)
#define ALL(container) (container).begin(), (container).end()

using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef pair<int, int> pi;
typedef pair<ll, ll> pll;

const int INF = 1e9;
const int MOD = 1000000007;

int main()
{
  int N;
  cin >> N;
  vector<int> A(N);
  double sum = 0;
  REP(i, 0, N)
  {
    cin >> A[i];
    sum += 1.0 / A[i]
  }

  cout << 1.0 / sum << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:26:22: error: expected ';' before '}' token
   26 |     sum += 1.0 / A[i]
      |                      ^
      |                      ;
   27 |   }
      |   ~
Language: C++

#include "SaveFuncs.cpp"

/*****/

#include <iostream>
#include <array>
#include <vector>
#include <algorithm>
#include <string>
#include <cmath>
#include <queue>
#include <stack>
#include <map>
#include <iomanip>	//cout << fixed << setprecision(桁数);
#include <stdexcept>

using namespace std;
using ll = long long;

#define rep(i, n) for(int i=0, i##_len=(n); i<i##_len; i++)
#define rep1(i, n) for(int i=1, i##_len=(n); i<i##_len; i++)
#define rrep(i, n) for(int i=(n)-1; i >= 0; i--)
#define rrep1(i, n) for(int i=(n); i > 0; i--)
#define all(x) (x).begin(), (x).end()
#define pair(a, b) make_pair(a, b);
//#define int long long
constexpr int INF = 2000000100;
constexpr int DIV = 1000000007;	// 10e9+7
template<class T> bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }
template<class T> T divUp(T a, T b) { if (a % b == 0) { return a / b; } return a / b + 1; }
std::string strMulti(std::string t, int n) { std::string out = ""; for (int i = 0; i < n; i++) { out += t; } return out; }
template<class T> T math_P(T m, T n) { T ret = 1; for (T i = m; i > m - n; i--) { ret *= i; } return ret; }
template<class T> T math_C(T m, T n) { T ret = mathP(m, n); for (T i = 2; i <= n; i++) { ret /= i; } return ret; }
template<class T> bool compare_by_b(pair<T, T> a, pair<T, T> b) { if (a.second != b.second) { return a.second < b.second; } return a.first < b.first; }
template<class T> T math_gcd(T a, T b) { a = abs(a); b = abs(b); if (a < b) { std::swap(a, b); } T tmp; while (b != 0) { tmp = b; b = a % b; a = tmp; } return a; }
template<class T> T math_lcm(T a, T b) { a = abs(a); b = abs(b); if (a > b) { std::swap(a, b); } if (a == 1) { return b; } T i = a; while (i % b != 0) { i += a; } return i; }

/*****/

int Main()
{
	int N;
	cin >> N;
	vector<int> A(N);
	rep(i, N)	cin >> A.at(i);

	long double ret = 0.0;
	rep(i, N)
	{
		ret += 1.0 / A.at(i);
	}
	ret = 1.0 / ret;


	cout << fixed << setprecision(10);
	cout << ret;

	return 0;
}

/*****/

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

	Main();

	return 0;
}


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

int main()
{
  int n;
  cin >> n;
  double s = 0;
  for (int i = 0; i < n; ++i)
  {
    int x;
    cin >> x;
    s += (1 / x);
  }
  cout << (1 / s) << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:3: error: 'cin' was not declared in this scope
    4 |   cin >> n;
      |   ^~~
a.cc:12:3: error: 'cout' was not declared in this scope
   12 |   cout << (1 / s) << endl;
      |   ^~~~
a.cc:12:22: error: 'endl' was not declared in this scope
   12 |   cout << (1 / s) << endl;
      |                      ^~~~
Language: C++

N = gets.chomp.to_i
str = gets.split
a = Array.new(N)
for i in 0...N do
    a[i] = str[i].to_f
end

b = 0.0
for i in 0...N do
    b += 1.0/a[i]
end

c = 1.0/b
puts c

Compiler output:
a.cc:4:10: error: too many decimal points in number
    4 | for i in 0...N do
      |          ^~~~~
a.cc:9:10: error: too many decimal points in number
    9 | for i in 0...N do
      |          ^~~~~
a.cc:1:1: error: 'N' does not name a type
    1 | N = gets.chomp.to_i
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define FOR(i, a, b) for(int i=(a); i<(b); ++i)
#define  REP(i, n) for(int i=0; i<(n); ++i)
#define  ALL(obj) (obj).begin(), (obj).end()
#define ll long long
#define ul unsigned long

signed main()
{
  ios::sync_with_stdio(false);
  cin.tie(0);
  int N;
  cin >> N;
  double A[N];
  REP(i,N) cin >> A[i];
  double result = 0.0;
  REP(i,N) res += 1.0/A[i];
  cout << 1.0/res << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:12: error: 'res' was not declared in this scope
   18 |   REP(i,N) res += 1.0/A[i];
      |            ^~~
a.cc:19:15: error: 'res' was not declared in this scope
   19 |   cout << 1.0/res << endl;
      |               ^~~
Language: C++

#include <iostream>
#include <vector>
#include <set>
#include <string>
#include <utility>
#include <functional>
#include <queue>
#include <cmath>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <boost/range/irange.hpp>
#include <boost/range/algorithm.hpp>
#include <boost/range/numeric.hpp>
#include <boost/multi_array.hpp>
#include <boost/math/common_factor_ct.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/pending/disjoint_sets.hpp>
#include <boost/icl/interval_map.hpp>
#include <boost/graph/graph_traits.hpp>
#include <boost/graph/strong_components.hpp>
#include <boost/graph/adjacency_list.hpp>
#include <boost/graph/dijkstra_shortest_paths.hpp>
#include <boost/graph/bellman_ford_shortest_paths.hpp>
#include <boost/graph/kruskal_min_spanning_tree.hpp>
#include <boost/graph/graph_utility.hpp>

#define REP(i, N) for(int i=0; i<(N); i++)
using namespace std;
using namespace boost::math;

int main() {
	int N;

	cin >> N;
    vector<int> A(N);
    double r = 0.0;
  
    for (auto& i : A) {
      cin >> i;
      r += 1.0 / (double)i;
    }

	cout << std::setprecision(9) << 1.0 / r << endl;

	return 0;
}


Compiler output:
a.cc:12:10: fatal error: boost/range/irange.hpp: No such file or directory
   12 | #include <boost/range/irange.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
#include<string>
#include<cstdio>
#include<cstring>
#include<vector>
#include<cmath>
#include<algorithm>
#include<functional>
#include<iomanip>
#include<queue>
#include<ciso646>
#include<random>
#include<map>
#include<set>
#include<complex>
#include<bitset>
#include<stack>
#include<unordered_map>
#include<utility>
#include<cassert>
using namespace std;

typedef long long ll;
typedef unsigned long long ul;
typedef unsigned int ui;
typedef long double ld;
const ll mod = 1000000007;
const ll INF = mod * mod;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define Rep(i,sta,n) for(int i=sta;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
#define per1(i,n) for(int i=n;i>=1;i--)
#define Rep1(i,sta,n) for(int i=sta;i<=n;i++)
typedef complex<ld> Point;
const ld eps = 1e-8;
const ld pi = acos(-1.0);
typedef pair<int, int> P;
typedef pair<ld, ld> LDP;
typedef pair<ll, ll> LP;
typedef vector<int> vec;
typedef vector<string> svec;
#define fr first
#define sc second
#define all(c) c.begin(),c.end()
#define pb push_back
//#define int long long

void solve() {
    int N; cin >> N;
    ld A[110];
    rep(i, N) {
        cin >> A[i];
        A[i] = (ld)1 / A[i];
    }
    ld ans = 0;
    rep(i, N) {
        ans += A[i];
    }
    ans = (ld)1 / ans;
    cout << ans << endl;
}

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout << fixed << setprecision(10);
	//init();
	solve();
	//cout << "finish" << endl;
    return 0;

Compiler output:
a.cc: In function 'int main()':
a.cc:71:14: error: expected '}' at end of input
   71 |     return 0;
      |              ^
a.cc:64:15: note: to match this '{'
   64 | signed main() {
      |               ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
	int n;
  cin >> n;
  double res = 0;
  for(int i = 0; i < n; i++){
    double x;
    cin >> x;
    res += 1.0 / x;
  }
  cout << 1.0 / x;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:17: error: 'x' was not declared in this scope
   12 |   cout << 1.0 / x;
      |                 ^
Language: C

#include<cstdio>
#include<algorithm>
using namespace std;
int main(void)
{
	int n,u[50];
	int i,j;
	double x=0;
	scanf("%d",&n);
	for(i=0;i<n;i++) scanf("%d",&u[i]);
	sort(u,u+n);
	x=u[0];
	for(i=0;i<n-1;i++){
		x=(double)((x+u[i+1])/2);
	}
	printf("%lf\n",x);
	return 0;
}

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

#include <iostream>
#include <string>
#include <vector>
#include <queue>
#include <iomanip>

using namespace std;
using ll = long long;
using pint = pair<int, int>;

void value(vector<double>& inArr, double& out) {
	if (inArr.size() == 1) {
		out = inArr[0];
		return;
	}

	vector<double> result;
	for (int i = 0; i < inArr.size() / 2; ++i) {
		double add = (inArr[i * 2] + inArr[i * 2 + 1]) / 2.0;
		result.push_back(add);
	}

	if (inArr.size() % 2 != 0) {
		result.push_back(inArr[inArr.size()-1]);
	}
	value(result, out);
}

int main() {
	int N;
	cin >> N;
	
	vector<double> v(N);
	for (int i = 0; i < N; ++i) {
		cin >> v[i];
	}

	sort(v.begin(), v.end());

	double ans = 0.0;
	value(v, ans);

	cout << fixed << setprecision(14) << ans << endl;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:38:9: error: 'sort' was not declared in this scope; did you mean 'short'?
   38 |         sort(v.begin(), v.end());
      |         ^~~~
      |         short
Language: C++

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

typedef long long int ll;
typedef vector<long long>lve;
typedef vector<pair<ll,ll> > lvp;

#define sp         ' '
#define endl       '\n'
#define F          first
#define S          second
#define pp         pop_back`
#define pb         push_back
#define mp         make_pair 
#define GCD(x,y)   __gcd(x,y)
#define lb         lower_bound
#define bs         binary_search
#define all(x)     x.begin(),x.end()
#define LCM(x,y)   ((x*y)/__gcd(x,y))
#define btpc       __builtin_popcountll
#define spc(x)     cout<<fixed<<setprecision(x)

const   long long  inf = 1e18;
const   long long  cs =  200005;
const   long long  mod = 1000000007;
const   double     PI =  2 * acos(0.0);
void solve()
{
    long long t,n,m,a,b,i,j,k,x,y,cnt=1;
    bool flag = false;
    cin>>n;
    lve v(n);
    for(a:v) cin>>a;
    sort(all(v));
    if(n==2) 
    {
        cout<<(v[0]+v[1])/2.0<<endl;
    }
    else {
        cout<<(v[n-1]/2.0)+(v[n-2]+v[n-3])/4.0<<endl;
    }

}
int32_t main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);    cout.tie(NULL);

    // freopen ("input.txt","r",stdin);
    // freopen ("output.txt","w",stdout);

    // ll tc;
    // cin>>tc;
    // while(tc--)
    solve();

    return 0;
}

Compiler output:
a.cc: In function 'void solve()':
a.cc:33:10: error: found ':' in nested-name-specifier, expected '::'
   33 |     for(a:v) cin>>a;
      |          ^
      |          ::
a.cc:33:9: error: 'a' is not a class, namespace, or enumeration
   33 |     for(a:v) cin>>a;
      |         ^
a.cc:34:9: error: could not convert 'std::sort<__gnu_cxx::__normal_iterator<long long int*, vector<long long int> > >(v.std::vector<long long int>::begin(), v.std::vector<long long int>::end())' from 'void' to 'bool'
   34 |     sort(all(v));
      |     ~~~~^~~~~~~~
      |         |
      |         void
a.cc:35:5: error: expected primary-expression before 'if'
   35 |     if(n==2)
      |     ^~
a.cc:34:18: error: expected ')' before 'if'
   34 |     sort(all(v));
      |                  ^
      |                  )
   35 |     if(n==2)
      |     ~~            
a.cc:33:8: note: to match this '('
   33 |     for(a:v) cin>>a;
      |        ^
Language: C++


#include <iostream>      // cout, endl, cin
#include <string>        // string, to_string, stoi
#include <vector>        // vector
#include <algorithm>     // min, max, swap, sort, reverse, lower_bound, upper_bound
#include <utility>       // pair, make_pair
#include <tuple>         // tuple, make_tuple
#include <cstdint>       // int64_t, int*_t
#include <cstdio>        // printf
#include <map>           // map
#include <queue>         // queue, priority_queue
#include <set>           // set
#include <stack>         // stack
#include <deque>         // deque
#include <unordered_map> // unordered_map
#include <unordered_set> // unordered_set
#include <bitset>        // bitset
#include <cctype>        // isupper, islower, isdigit, toupper, tolower
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main()
{
#include <bits/stdc++.h>
  using namespace std;

  int main()
  {
    int n;
    cin >> n;
    vector<double> vec(n + 1);
    cout << fixed << setprecision(6);
    for (int i = 1; i <= n; i++)
    {
      cin >> vec[i];
    }
    double ans = 0;
    for (int i = 1; i < n; i++)
    {

      sort(vec.begin(), vec.end());
      ans = (vec[i] + vec[i + 1]) / 2;
      vec[i + 1] = ans;
    }
    cout << vec[n] << endl;
  }

Compiler output:
a.cc: In function 'int main()':
a.cc:27:11: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
   27 |   int main()
      |           ^~
a.cc:27:11: note: remove parentheses to default-initialize a variable
   27 |   int main()
      |           ^~
      |           --
a.cc:27:11: note: or replace parentheses with braces to value-initialize a variable
a.cc:28:3: error: a function-definition is not allowed here before '{' token
   28 |   {
      |   ^
a.cc:46:4: error: expected '}' at end of input
   46 |   }
      |    ^
a.cc:23:1: note: to match this '{'
   23 | {
      | ^
Language: C++

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

int main(){
  int N;
  cin >> N;
  vector<int> v(N);
  for(int i=0;i<N;i++){
    cin >> v[i];
  }
  sort(v.begin().v.end());
  double ans=v[0];
  for(int i=0;i<N-1;i++){
    ans+=(double)(ans+v[i+1])/(double)2;
  }
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:18: error: 'std::vector<int>::iterator' has no member named 'v'
   12 |   sort(v.begin().v.end());
      |                  ^
Language: C++

#include<iostream>
#include<string>
#include<algorithm>
#include<math.h>
#include<queue>
#include<vector>
#include<map>
#include<iomanip>
#include<tuple>
#include<bitset>


using namespace std;
#define rep(i,n) for(int i=0;i<(n);i++)
#define printfloat(x) cout << fixed << setprecision(7) << (x) << endl;
#define printbit(x) cout << bitset<15>(x) << endl;
using ll = long long int;



long double pi = 3.14159265359;

int n;
double long v[1000],ans;

int main(){
    cin >> n;
    rep(i,n){
        cin >> v[i];
    }
    sort(v,v+n);
    ans = v[0];
    for(int i=1;i<n;i++){
        ans = (ans+v[i])/2;
        cout << v[i] << endl;
    }
    printfloat(ans);


return 0;
}#include<iostream>
#include<string>
#include<algorithm>
#include<math.h>
#include<queue>
#include<vector>
#include<map>
#include<iomanip>
#include<tuple>
#include<bitset>


using namespace std;
#define rep(i,n) for(int i=0;i<(n);i++)
#define printfloat(x) cout << fixed << setprecision(7) << (x) << endl;
#define printbit(x) cout << bitset<15>(x) << endl;
using ll = long long int;



long double pi = 3.14159265359;

int n;
double long v[1000],ans;

int main(){
    cin >> n;
    rep(i,n){
        cin >> v[i];
    }
    sort(v,v+n);
    ans = v[0];
    for(int i=1;i<n;i++){
        ans = (ans+v[i])/2;
        cout << v[i] << endl;
    }
    printfloat(ans);


return 0;
}

Compiler output:
a.cc:41:2: error: stray '#' in program
   41 | }#include<iostream>
      |  ^
a.cc:41:3: error: 'include' does not name a type
   41 | }#include<iostream>
      |   ^~~~~~~
a.cc:61:13: error: redefinition of 'long double pi'
   61 | long double pi = 3.14159265359;
      |             ^~
a.cc:21:13: note: 'long double pi' previously defined here
   21 | long double pi = 3.14159265359;
      |             ^~
a.cc:63:5: error: redefinition of 'int n'
   63 | int n;
      |     ^
a.cc:23:5: note: 'int n' previously declared here
   23 | int n;
      |     ^
a.cc:64:13: error: redefinition of 'long double v [1000]'
   64 | double long v[1000],ans;
      |             ^
a.cc:24:13: note: 'long double v [1000]' previously declared here
   24 | double long v[1000],ans;
      |             ^
a.cc:64:21: error: redefinition of 'long double ans'
   64 | double long v[1000],ans;
      |                     ^~~
a.cc:24:21: note: 'long double ans' previously declared here
   24 | double long v[1000],ans;
      |                     ^~~
a.cc:66:5: error: redefinition of 'int main()'
   66 | int main(){
      |     ^~~~
a.cc:26:5: note: 'int main()' previously defined here
   26 | int main(){
      |     ^~~~
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for(long long i=0; i<n; i++)
#define Rep(i,n) for(long long i=1; i<n; i++)
#define ll long long
#include <math.h>
#include <cmath>
#include <iomanip>
#include <iostream>
#include <numeric>
#include <queue>
#include <set>
#include <vector>


using namespace std;
#define PI acos(-1)
using P =pair<int,int>;

int main(){
    ll n;
    cin>>n;
    vector<ll>v(n);
    rep(i,n)cin>>v[i];
    sort(v.begin(),v.end());
    long double now=0;
    rep(i,n){
        if(now==0)now=v[i];
        else{
            now=(now+v[i])/2.0;
        }
    }
　　　cout<<now<<endl;
}


Compiler output:
a.cc:32:1: error: extended character 　 is not valid in an identifier
   32 | 　　　cout<<now<<endl;
      | ^
a.cc:32:1: error: extended character 　 is not valid in an identifier
a.cc:32:1: error: extended character 　 is not valid in an identifier
a.cc: In function 'int main()':
a.cc:32:1: error: '\U00003000\U00003000\U00003000cout' was not declared in this scope
   32 | 　　　cout<<now<<endl;
      | ^~~~~~~~~~
Language: C++


int main(){
    int n;
    cin >> n;
    double input[n];
    rep(i, n) cin >> input[i];
    sort(input, input+n);
    double res = input[0];
    for(int i=0; i<n; i++) res = (res + input[i])/2;
    cout << res << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:5: error: 'cin' was not declared in this scope
    4 |     cin >> n;
      |     ^~~
a.cc:6:9: error: 'i' was not declared in this scope
    6 |     rep(i, n) cin >> input[i];
      |         ^
a.cc:6:5: error: 'rep' was not declared in this scope
    6 |     rep(i, n) cin >> input[i];
      |     ^~~
a.cc:7:5: error: 'sort' was not declared in this scope; did you mean 'short'?
    7 |     sort(input, input+n);
      |     ^~~~
      |     short
a.cc:10:5: error: 'cout' was not declared in this scope
   10 |     cout << res << endl;
      |     ^~~~
a.cc:10:20: error: 'endl' was not declared in this scope
   10 |     cout << res << endl;
      |                    ^~~~
Language: C++


int main(){
    int n;
    cin >> n;
    double v[n][n] ={ {0.0} };
    double input[n];
    rep(i, n) cin >> input[i];
    sort(input, input+n);
    rep(i, n) v[0][i] = input[i];

    int cnt=1;
    int d=0;
    /*while(n>1){
        d=0;
        for(int i=0; i<n; i+=2){
            if(i==n-1){
                v[cnt][d++] =  v[cnt-1][i];
            }else if(v[cnt-1][i+1] != 0.0){
                v[cnt][d++] = (v[cnt-1][i] + v[cnt-1][i+1])/2.0;
            }
        }
        n = d; 
        cnt++;
    }
    cout << v[cnt-1][0] << endl;*/
    double ans = input[0];
    for(int i=0; i<n; i++) ans = (ans + input[i])/2;
    cout << ans << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:5: error: 'cin' was not declared in this scope
    4 |     cin >> n;
      |     ^~~
a.cc:7:9: error: 'i' was not declared in this scope
    7 |     rep(i, n) cin >> input[i];
      |         ^
a.cc:7:5: error: 'rep' was not declared in this scope
    7 |     rep(i, n) cin >> input[i];
      |     ^~~
a.cc:8:5: error: 'sort' was not declared in this scope; did you mean 'short'?
    8 |     sort(input, input+n);
      |     ^~~~
      |     short
a.cc:28:5: error: 'cout' was not declared in this scope
   28 |     cout << ans << endl;
      |     ^~~~
a.cc:28:20: error: 'endl' was not declared in this scope
   28 |     cout << ans << endl;
      |                    ^~~~
Language: C++

#include <bits/stdc++.h>
#define rep(i,x,n) for(int i = x; i < (int)(n); i++)
#define rep_ll(i,x,n) for(ll i = x; i < (ll)(n); i++)
using namespace std;
typedef long long ll;
typedef unsigned long long u_ll;
typedef pair<int, int> pair_;
const long double PI = (acos(-1));
const int INF = 1001001001;
const int dx[] = {-1, 0, 1, 0}; const int dy[] = {0, -1, 0, 1};
ll mod = 1000000007;
int main(){
    int n;
    cin >> n;
    priority_queue<double> v;
    double x;
    rep(i, 0, n) {
        cin >> x;
        v.push(x);
    }
    rep(i, 0, n-1){
        double xx = v.top();
        v.pop();
        double yy = v.top();
        v.pop();
        v.push((xx+yy)/2);
    }
    double ans=v.top();
    cout << fixed << precision(6) << ans;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:29:22: error: 'precision' was not declared in this scope
   29 |     cout << fixed << precision(6) << ans;
      |                      ^~~~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int N;
  cin>>N;
  vector<double>vec(N);
  for(int i=0;i<N;i++){
    cin>>vec[i];
  }
  sort(vec.begin(), vec.end());
  double M=[0];
  for(int i=1;i<N;i++){
    M += vec[i];
    M /= 2;
  }
  cout<<M<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:13: error: expected identifier before numeric constant
   12 |   double M=[0];
      |             ^
a.cc: In lambda function:
a.cc:12:15: error: expected '{' before ';' token
   12 |   double M=[0];
      |               ^
a.cc: In function 'int main()':
a.cc:12:12: error: cannot convert 'main()::<lambda()>' to 'double' in initialization
   12 |   double M=[0];
      |            ^~~
      |            |
      |            main()::<lambda()>
Language: C++

#include<bits/stdc++.h>

using namespace std;

int main(){
    int n;
    cin>>n;
    double v[n];
    for(int i=0;i<n;i++){
    cin>>v[i];
    }
    sort(v.begin(),v.end());
    
    for(int i=1;i<n;i++){
        v[i]=(v[i]+v[i-1])/2;
    }
    
    cout<<v[n-1]<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:12: error: request for member 'begin' in 'v', which is of non-class type 'double [n]'
   12 |     sort(v.begin(),v.end());
      |            ^~~~~
a.cc:12:22: error: request for member 'end' in 'v', which is of non-class type 'double [n]'
   12 |     sort(v.begin(),v.end());
      |                      ^~~
Language: C++

#include<bits/stdc++.h>

using namespace std;

int main(){
    int n;
    cin>>n;
    double vec[n];
    for(int i=0;i<n;i++){
    cin>>vec[i];
    }
    sort(vec.begin(),vec.end());
    
    for(int i=1;i<n;i++){
        vec[i]=(vec[i]+vec[i-1])/2;
    }
    
    cout<<vec[n-1]<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:14: error: request for member 'begin' in 'vec', which is of non-class type 'double [n]'
   12 |     sort(vec.begin(),vec.end());
      |              ^~~~~
a.cc:12:26: error: request for member 'end' in 'vec', which is of non-class type 'double [n]'
   12 |     sort(vec.begin(),vec.end());
      |                          ^~~
Language: C++

#include<bits/stdc++.h>

using namespace std;

int main(){
    int n;
    cin>>n;
    bouble vec[n];
    for(int i=0;i<n;i++){
    cin>>vec[i];
    }
    sort(vec.begin(),vec.end());
    
    for(int i=1;i<n;i++){
        vec[i]=(vec[i]+vec[i-1])/2;
    }
    
    cout<<vec[n-1]<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:5: error: 'bouble' was not declared in this scope; did you mean 'double'?
    8 |     bouble vec[n];
      |     ^~~~~~
      |     double
a.cc:10:10: error: 'vec' was not declared in this scope
   10 |     cin>>vec[i];
      |          ^~~
a.cc:12:10: error: 'vec' was not declared in this scope
   12 |     sort(vec.begin(),vec.end());
      |          ^~~
Language: C++

#include <iostream> // cout, endl, cin
#include <string> // string, to_string, stoi
#include <vector> // vector
#include <algorithm> // min, max, swap, sort, reverse, lower_bound, upper_bound
#include <utility> // pair, make_pair
#include <tuple> // tuple, make_tuple
#include <cstdint> // int64_t, int*_t
#include <cstdio> // printf
#include <map> // map
#include <queue> // queue, priority_queue
#include <set> // set
#include <stack> // stack
#include <deque> // deque
#include <unordered_map> // unordered_map
#include <unordered_set> // unordered_set
#include <bitset> // bitset
#include <cctype> // isupper, islower, isdigit, toupper, tolower
using namespace std;

int main(){
  int N;
  cin>>N;
  double vec[N];
  for(int i=0;i<N;++i){
    cin>>vec[i];
  }
  sort(vec.begin(), vec.end());
  int ans=0;
  ans=(vec[0]+vec[1])/2;
  for(int i=2;i<N-1;i++){
    ans=(vec[i]+ans)/2;
  }
  cout<<ans;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:27:12: error: request for member 'begin' in 'vec', which is of non-class type 'double [N]'
   27 |   sort(vec.begin(), vec.end());
      |            ^~~~~
a.cc:27:25: error: request for member 'end' in 'vec', which is of non-class type 'double [N]'
   27 |   sort(vec.begin(), vec.end());
      |                         ^~~
Language: C++

#include <iostream> // cout, endl, cin
#include <string> // string, to_string, stoi
#include <vector> // vector
#include <algorithm> // min, max, swap, sort, reverse, lower_bound, upper_bound
#include <utility> // pair, make_pair
#include <tuple> // tuple, make_tuple
#include <cstdint> // int64_t, int*_t
#include <cstdio> // printf
#include <map> // map
#include <queue> // queue, priority_queue
#include <set> // set
#include <stack> // stack
#include <deque> // deque
#include <unordered_map> // unordered_map
#include <unordered_set> // unordered_set
#include <bitset> // bitset
#include <cctype> // isupper, islower, isdigit, toupper, tolower
using namespace std;

int main(){
  int N;
  cin>>N;
  int vec(N);
  for(int i=0;i<N;++i){
    cin>>vec[i];
  }
  sort(vec.begin(), vec.end());
  int ans=0;
  ans=(vec[0]+vec[1])/2;
  for(int i=2;i<N-1;i++){
    ans=(vec[i]+ans)/2;
  }
  cout<<ans;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:25:13: error: invalid types 'int[int]' for array subscript
   25 |     cin>>vec[i];
      |             ^
a.cc:27:12: error: request for member 'begin' in 'vec', which is of non-class type 'int'
   27 |   sort(vec.begin(), vec.end());
      |            ^~~~~
a.cc:27:25: error: request for member 'end' in 'vec', which is of non-class type 'int'
   27 |   sort(vec.begin(), vec.end());
      |                         ^~~
a.cc:29:11: error: invalid types 'int[int]' for array subscript
   29 |   ans=(vec[0]+vec[1])/2;
      |           ^
a.cc:29:18: error: invalid types 'int[int]' for array subscript
   29 |   ans=(vec[0]+vec[1])/2;
      |                  ^
a.cc:31:13: error: invalid types 'int[int]' for array subscript
   31 |     ans=(vec[i]+ans)/2;
      |             ^
Language: C++

#include <iostream> // cout, endl, cin
#include <string> // string, to_string, stoi
#include <vector> // vector
#include <algorithm> // min, max, swap, sort, reverse, lower_bound, upper_bound
#include <utility> // pair, make_pair
#include <tuple> // tuple, make_tuple
#include <cstdint> // int64_t, int*_t
#include <cstdio> // printf
#include <map> // map
#include <queue> // queue, priority_queue
#include <set> // set
#include <stack> // stack
#include <deque> // deque
#include <unordered_map> // unordered_map
#include <unordered_set> // unordered_set
#include <bitset> // bitset
#include <cctype> // isupper, islower, isdigit, toupper, tolower
using namespace std;

int main(){
  int N;
  cin>>N;
  int vec[N];
  for(int i=0;i<N;++i){
    cin>>vec[i];
  }
  sort(vec.begin(), vec.end());
  int ans=0;
  ans=(vec[0]+vec[1])/2;
  for(int i=2;i<N-1;i++){
    ans=(vec[i]+ans)/2;
  }
  cout<<ans;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:27:12: error: request for member 'begin' in 'vec', which is of non-class type 'int [N]'
   27 |   sort(vec.begin(), vec.end());
      |            ^~~~~
a.cc:27:25: error: request for member 'end' in 'vec', which is of non-class type 'int [N]'
   27 |   sort(vec.begin(), vec.end());
      |                         ^~~
Language: C++

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

int main(){
  int N;
  cin>>N;
  int guzai[N];
  for(int i=0;i<N;++i){
    cin>>guzai[i];
  }
  sort(guzai.begin(), guzai.end());
  int ans=0;
  ans=(guzai[0]+guzai[1])/2;
  for(int i=2;i<N-1;i+2){
    ans=(guzai[i]+ans)/2;
  }
  cout<<ans;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:14: error: request for member 'begin' in 'guzai', which is of non-class type 'int [N]'
   11 |   sort(guzai.begin(), guzai.end());
      |              ^~~~~
a.cc:11:29: error: request for member 'end' in 'guzai', which is of non-class type 'int [N]'
   11 |   sort(guzai.begin(), guzai.end());
      |                             ^~~
Language: C++

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

int main(){
  int N;
  cin>>N;
  int guzai[N];
  for(int i=0;i<N;++i){
    cin>>guzai[i];
  }
  sort(data.begin(), data.end());
  int ans=0;
  ans=(data[0]+data[1])/2;
  for(int i=2;i<N-1;i+2){
    ans=(data[i]+ans)/2;
  }
  cout<<ans;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:13: error: overloaded function with no contextual type information
   11 |   sort(data.begin(), data.end());
      |             ^~~~~
a.cc:11:27: error: overloaded function with no contextual type information
   11 |   sort(data.begin(), data.end());
      |                           ^~~
a.cc:13:12: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   13 |   ans=(data[0]+data[1])/2;
      |            ^
a.cc:13:20: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   13 |   ans=(data[0]+data[1])/2;
      |                    ^
a.cc:15:14: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   15 |     ans=(data[i]+ans)/2;
      |              ^
Language: C++

require 'bigdecimal'
require 'bigdecimal/util'

n = gets.chomp.split("")
arr = gets.chomp.split(" ").map(&:to_i).sort

puts arr.inject {|result, val| (result.to_d + val.to_d) / 2.to_d }.to_s('F')


Compiler output:
a.cc:1:9: warning: multi-character literal with 10 characters exceeds 'int' size of 4 bytes
    1 | require 'bigdecimal'
      |         ^~~~~~~~~~~~
a.cc:2:9: warning: multi-character literal with 15 characters exceeds 'int' size of 4 bytes
    2 | require 'bigdecimal/util'
      |         ^~~~~~~~~~~~~~~~~
a.cc:1:1: error: 'require' does not name a type
    1 | require 'bigdecimal'
      | ^~~~~~~
a.cc:7:67: error: expected unqualified-id before '.' token
    7 | puts arr.inject {|result, val| (result.to_d + val.to_d) / 2.to_d }.to_s('F')
      |                                                                   ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int N;
  cin>>N;
  vector<double>vec(N);
  for (int X=0;X<N;X++){
    cin>>vec.at(X)
  }
  sort(vec.begin(), vec.end());
  int M=vec.at(0);
  for (int X=1;X<N;X++){
    M+=vec.at(X);
    M/=2;
  }
  cout << M << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:19: error: expected ';' before '}' token
    9 |     cin>>vec.at(X)
      |                   ^
      |                   ;
   10 |   }
      |   ~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  
  int n;
  cin >> n;
  int arr[n];
  for(int i = 0; i < n; i++){
    cin >> arr[i];
  }
  sort(arr,arr+n);
  stack <int> s;
  
  for(int i = n - 1; i >= 0; i--){
    s.push(arr[i]);
  }
  for(int i = 0; i < n - 1; i++){
    int a = s.pop();
    int b = s.pop();
    s.push((a+b)/2);
  }
  while(!s.empty()){
    int x = s.pop();
    cout << x;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:18: error: void value not ignored as it ought to be
   18 |     int a = s.pop();
      |             ~~~~~^~
a.cc:19:18: error: void value not ignored as it ought to be
   19 |     int b = s.pop();
      |             ~~~~~^~
a.cc:23:18: error: void value not ignored as it ought to be
   23 |     int x = s.pop();
      |             ~~~~~^~
Language: C++

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

int main() {
  int N;
  cin >> N;
  vector<double> V(N);
  for (int i=0; i<N; i++) {
    cin >> V[i];
  }
  sort(V.begin(),V.end());
  for (int i=1; i<N; i++) {
    double a = V[0];
    a = (a + V[i])/2;
    
  }
  cout << a << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:11: error: 'a' was not declared in this scope
   17 |   cout << a << endl;
      |           ^
Language: C++

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

int main() {
  int N;
  cin >> N;
  vector<double> V(N);
  for (int i=0; i<N; i++) {
    cin >> V[i];
  }
  sort(V.begin(),V.end());
  for (int i=1; i<N; i=++) {
    double a = V[0];
    a = (a + V[i])/2;
    
  }
  cout << a << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:26: error: expected primary-expression before ')' token
   12 |   for (int i=1; i<N; i=++) {
      |                          ^
a.cc:17:11: error: 'a' was not declared in this scope
   17 |   cout << a << endl;
      |           ^
Language: C++

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

int main() {
  int N;
  cin >> N;
  vector<double> V(N);
  for (int i=0; i<N; i++) {
    cin >> V[i];
  }
  sort(V.begin(),V.end());
  for (int i=1; i<N; i++) {
    double a = V[0];
    a = (a + V[i])/2;
    
  }
  cout << a << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:11: error: 'a' was not declared in this scope
   17 |   cout << a << endl;
      |           ^
Language: C++

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

int main() {
  int N;
  cin >> N;
  vector<double> V(N);
  for (int i=0; i<N; i++) {
    cin >> V[i];
  }
  sort(V.begin(),V.end());
  for (int i=1; i<N; i=++) {
    double a = V[0];
    a = (a + V[i])/2;
    
  }
  cout << a << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:26: error: expected primary-expression before ')' token
   12 |   for (int i=1; i<N; i=++) {
      |                          ^
a.cc:17:11: error: 'a' was not declared in this scope
   17 |   cout << a << endl;
      |           ^
Language: C++

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

int main() {
  int N;
  cin >> N;
  vector<int> V(N);
  for (int i=0; i<N; i++) {
    cin >> V[i];
  }
  sort(V.begin(),V.end());
  for (int i=1; i<N; i=++) {
    double a = V[0];
    a = (a + V[i])/2
    
  }
  cout << a << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:26: error: expected primary-expression before ')' token
   12 |   for (int i=1; i<N; i=++) {
      |                          ^
a.cc:14:21: error: expected ';' before '}' token
   14 |     a = (a + V[i])/2
      |                     ^
      |                     ;
   15 | 
   16 |   }
      |   ~                  
a.cc:17:11: error: 'a' was not declared in this scope
   17 |   cout << a << endl;
      |           ^
Language: C++

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

int main() {
  int N;
  cin >> N;
  vector<int> V(N);
  for (int i=0; i<N; i++) {
    cin >> V[i];
  }
  sort(V.begon(),V.end());
  for (int i=1; i<N; i=++) {
    double a = V[0];
    a = (a + V[i])/2
    
  }
  cout << a << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:10: error: 'class std::vector<int>' has no member named 'begon'; did you mean 'begin'?
   11 |   sort(V.begon(),V.end());
      |          ^~~~~
      |          begin
a.cc:12:26: error: expected primary-expression before ')' token
   12 |   for (int i=1; i<N; i=++) {
      |                          ^
a.cc:14:21: error: expected ';' before '}' token
   14 |     a = (a + V[i])/2
      |                     ^
      |                     ;
   15 | 
   16 |   }
      |   ~                  
a.cc:17:11: error: 'a' was not declared in this scope
   17 |   cout << a << endl;
      |           ^
Language: C++

#include <iostream>
#include <vector>

int main(){
  int N;
  std::vector<int> v;
  std::cin >> N;
  for(int i = 0 ; i < N ; i++){
    int temp;
    std::cin >> temp;
    v.push_back(temp);
  }
  std::sort(v.begin(), v.end());

  double resa = 0;
  double ave = v[0];
  for(int i = 0 ; i < (int)v.size() - 1 ; i++){
    ave = (ave + v[i+1]) / 2.0;
  }

  std::cout << ave << std::endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:8: error: 'sort' is not a member of 'std'; did you mean 'qsort'?
   13 |   std::sort(v.begin(), v.end());
      |        ^~~~
      |        qsort
Language: C++

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

int main(){
  int N;
  cin >> N;
  vector<int>u(N+1);
  for(int i=1;i<N+!;i++){
    cin >> u[i];
  }
  sort(u.begin(),u.end());
  int ans=0;
  for(int i=2;i<N+1;i++){
    if(i==2){
      ans=(u[1]+u[2])/2;
    }
    else{
      ans=(ans+u[i])/2;
    }
  }
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:20: error: expected primary-expression before ';' token
    8 |   for(int i=1;i<N+!;i++){
      |                    ^
Language: C++

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

int main(){
  int N;
  cin >> N;
  vector<int>u(N+1);
  for(int i=1;i<N+!;i++){
    cin >> u[i];
  }
  sort(u.begin(),u.end());
  for(int i=2;i<N+1;i++){
    if(i==2){
      ans=(u[1]+u[2])/2;
    }
    else{
      ans=(ans+u[i])/2;
    }
  }
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:20: error: expected primary-expression before ';' token
    8 |   for(int i=1;i<N+!;i++){
      |                    ^
a.cc:14:7: error: 'ans' was not declared in this scope; did you mean 'abs'?
   14 |       ans=(u[1]+u[2])/2;
      |       ^~~
      |       abs
a.cc:17:7: error: 'ans' was not declared in this scope; did you mean 'abs'?
   17 |       ans=(ans+u[i])/2;
      |       ^~~
      |       abs
a.cc:20:11: error: 'ans' was not declared in this scope; did you mean 'abs'?
   20 |   cout << ans << endl;
      |           ^~~
      |           abs
Language: Java

import java.util.*;
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int N = sc.nextInt();
		int []v = new int[N];
		
		for(int i=0; i<N; i++) {
			v[i] = sc.nextInt();
		}
      	//vを昇順に並び替える
		Arrays.sort(v);
        //answerにvの最小値を入れる
		double answer = v[0];
      
      　//小さい順から計算すれば最大値が得られる
		//最小値＋次の値/2をanswerに代入していく
		for(int j=1; j<N; j++) {
			answer = (answer+v[j])/2;
		}
		System.out.println(answer);
	}		
}

Compiler output:
Main.java:17: error: illegal character: '\u3000'
      ?//???????????????????
      ^
1 error
Language: C++

#inlcude<bits/stdc++.h>
using namespace std;
int main(){
  int n,a[55];
  double m;
  cin>>n;
  for(int i=0;i<n;i++)
    cin>>a[i];
  sort(a,a+n);
  m=a[1]+a[0];
  if(n==2) printf("%.6lf",m);
  else {
         for(int i=2;i<n;i++)
            m=m/2+a[i]/2;
             printf("%.6lf",m);
  }
  return 0;
}

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:6:3: error: 'cin' was not declared in this scope
    6 |   cin>>n;
      |   ^~~
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:9:3: error: 'sort' was not declared in this scope; did you mean 'short'?
    9 |   sort(a,a+n);
      |   ^~~~
      |   short
a.cc:11:12: error: 'printf' was not declared in this scope
   11 |   if(n==2) printf("%.6lf",m);
      |            ^~~~~~
a.cc:1:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
  +++ |+#include <cstdio>
    1 | #inlcude<bits/stdc++.h>
a.cc:15:14: error: 'printf' was not declared in this scope
   15 |              printf("%.6lf",m);
      |              ^~~~~~
a.cc:15:14: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
Language: C++

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

int main() {
  int N;
  cin >> N;
  
  double A[N];
  for (int i = 0; i < N; i++) cin >> A[i];
  
  sort(A.begin(), A.end());
  
  double ans = (A[0] + A[1]) / 2;
  for (int i = 2; i < N; i++) {
    ans += (ans + A[i]) / 2; 
  }
  
  cout << fixed << setprecision(10) << ans << endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:10: error: request for member 'begin' in 'A', which is of non-class type 'double [N]'
   11 |   sort(A.begin(), A.end());
      |          ^~~~~
a.cc:11:21: error: request for member 'end' in 'A', which is of non-class type 'double [N]'
   11 |   sort(A.begin(), A.end());
      |                     ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n)=for(int i=0; i<n; i++);
using ll=long long;
int  main(){
int N;
cin>>N;
vector<double>data(N);
 rep(i,N){
     cin>>data.at(N);
 }
 sort(data.begin(),data.end());
double answer=data.at(0);
for(int i=1; i<N+1; i++){
answer=(answer+data.at(i))/2;
}
cout<<answer<<endl;
 }


Compiler output:
a.cc: In function 'int main()':
a.cc:3:17: error: expected primary-expression before '=' token
    3 | #define rep(i,n)=for(int i=0; i<n; i++);
      |                 ^
a.cc:9:2: note: in expansion of macro 'rep'
    9 |  rep(i,N){
      |  ^~~
a.cc:3:18: error: expected primary-expression before 'for'
    3 | #define rep(i,n)=for(int i=0; i<n; i++);
      |                  ^~~
a.cc:9:2: note: in expansion of macro 'rep'
    9 |  rep(i,N){
      |  ^~~
a.cc:9:6: error: 'i' was not declared in this scope
    9 |  rep(i,N){
      |      ^
a.cc:3:31: note: in definition of macro 'rep'
    3 | #define rep(i,n)=for(int i=0; i<n; i++);
      |                               ^
Language: C++

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

int main(){
	int N;
	cin>>N;
	double v[1000],a;
	for(int i=0;i<N;i++){
		cin>>v[i];
	}
	sort(v,v+N)
	for(int i=1;i<N;i++){
		v[i]=(v[i]+v[i-1])/2;
		a=v[i];
	}
	cout<<a;;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:20: error: expected ';' before 'for'
   12 |         sort(v,v+N)
      |                    ^
      |                    ;
   13 |         for(int i=1;i<N;i++){
      |         ~~~         
a.cc:13:21: error: 'i' was not declared in this scope
   13 |         for(int i=1;i<N;i++){
      |                     ^