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

#include <iostream>

using namespace std;

int main()
{
    int a,s;
    cin >> a >> n;
    if(a >= 3200){
        cout << s << endl; 
    }else{
        cout << "red" << endl; 
    }
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:17: error: 'n' was not declared in this scope
    8 |     cin >> a >> n;
      |                 ^
Language: Java

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scn = new Scanner(System.in);
		int N = scn.nextInt();
		scn.nextLine();
		String s = scn.nextLine();
		System.out.println((a < 3200)?"red":s);
	}

}


Compiler output:
Main.java:10: error: cannot find symbol
		System.out.println((a < 3200)?"red":s);
		                    ^
  symbol:   variable a
  location: class Main
1 error
Language: C++

#include<bits/stdc++.h>
#include<algorithm>
#include<math.h>
using namespace std;
long long int lcm(long long int a,long long int b){
  long long int n;
  n=a*b/__gcd(a,b);
  return n;
}
using ll =long long int;
#define ci(a) cin>>a
#define co(a) cout<<a<<endl
#define gcd(a,b) __gcd(a,b)
#define vec vector<ll>
#define for(i,a,b) for(int i=a;i<b;i++)
#define sort(a,b) sort(a.begin(),b.end())
//gcd 最大公約数
//lcm 最小公倍数
//double 少数（変数）
//string 文字列（変数）
//sqrt 平方根
//ceil 天井関数
//floor 床関数
//abs 絶対値
//pow 累乗
//cbrt  立方根
//hypot 平方和の平方根
 
int main() {
  ll a;
  string s;
  ci(a>>s);
  if(a<3200)
    s=red;
  co(s);
}


Compiler output:
a.cc: In function 'int main()':
a.cc:34:7: error: 'red' was not declared in this scope; did you mean 'read'?
   34 |     s=red;
      |       ^~~
      |       read
Language: C

#include <algorithm>
#include <climits>
#include <iostream>
#include <string>
#include <utility>
#include <vector>

using namespace std;
using ll = long long int;

template <class T> ostream &operator<<(ostream &os, vector<T> &v) {
  for (auto i = v.begin(); i != v.end(); i++) {
    os << *i << " ";
  }
  return os;
}

ll gcd(ll a, ll b) {
  ll tmp;
  if ( b > a) {
    tmp = a;
    a = b;
    b = tmp;
  }
  while (a % b !=0) {
    tmp = b;
    b = a % b;
    a = tmp;
  }
  return b;
}

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

int main(void) {
  int a;
  string s;
  cin>>s;
  cin>>a;
  if (a >= 3200)
    std::cout << s << std::endl;
  else
    std::cout << "red" << std::endl;
  return 0;
}



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

#include <bits/stdc++.h>

using namespace std;

int main(void) {
  scanf("%d%s", &n, s);
  if (a >= 3200)
    printf("%s\n", s);
  else
    printf("%red\n");
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:18: error: 'n' was not declared in this scope; did you mean 'yn'?
    6 |   scanf("%d%s", &n, s);
      |                  ^
      |                  yn
a.cc:6:21: error: 's' was not declared in this scope
    6 |   scanf("%d%s", &n, s);
      |                     ^
a.cc:7:7: error: 'a' was not declared in this scope
    7 |   if (a >= 3200)
      |       ^
Language: Java

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

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		// 整数の入力

		int a = sc.nextInt();
		String str = sc.next();
		String r = a>=3200? s : "red";


		System.out.println(r);

	}
}


Compiler output:
Main.java:11: error: cannot find symbol
		String r = a>=3200? s : "red";
		                    ^
  symbol:   variable s
  location: class Main
1 error
Language: C++

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

const int MOD=1000000007;
const int INF=0x3f3f3f3f;
const ll INFL=0x3f3f3f3f3f3f3f3f;

int main() {
  ll a; cin>>a;
  string s; cin>>s;
  if(a>=3200) cout<<s<<endl;
  else cout<<"red"<<Endl;
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:21: error: 'Endl' was not declared in this scope
   14 |   else cout<<"red"<<Endl;
      |                     ^~~~
Language: C

#include<cstdio>
#include<iostream>
#include<algorithm>
#include<utility>
#include<vector>
#include<queue>
#include<functional>
#include<map>
#include<set>
#include<cstring>
#include<string>
#include<stack>
#include<stdlib.h>
#include<math.h>
using namespace std;
//#define int long long
typedef pair<int, int> pii;
typedef pair<int, char> pic;
typedef priority_queue<pii, vector<pii>, greater<pii> > RPQ;
#define mk make_pair
#define INF (1 << 30)
#define INFL (1ll << 60ll)
#define mod 1000000007

int a;
string s;

signed main(){
    cin >> a >> s;
    if(a >= 3200)cout << s << endl;
    else cout << "red" << endl;

    return 0;
}
/*


*/

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

#include <bits/stdc++.h>
#define int long long
#define rep(i,n) for(int i=0;i<n;++i)
#define all(a) a.begin(),a.end()
#define P pair<long long,long long>
#define double long double
using namespace std;
signed main(){
  int a;
  string b;
  cin>>a>>b;
  if(3200=<a)
    cout<<b;
  else
    cout<<"red";
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:11: error: expected primary-expression before '<' token
   12 |   if(3200=<a)
      |           ^
Language: C++

//code by lynmisakura.wish to be accepted
/****************************/
#include<iostream>
#include<math.h>
#include<vector>
#include<string>
#include<stack>
#include<queue>
#include<map>
#include<algorithm>
#include<bitset>
#include <climits>
#include<set>
#include<bitset>
using namespace std;
/***************************/
typedef long long ll;
typedef pair<int,int> pi;
typedef vector<pair<int,int>> vpi;

const long long Mod = 998244353;
const long long mod = 1000000007;
const long long INF = 10000000000000;

#define itn int
#define endl "\n"
#define pb push_back
#define mp make_pair
#define mins(x,y) x = min(x,y)
#define maxs(x,y) x = max(x,y)
#define all(x) (x).begin(),(x).end()
#define Rep(n) for(int i = 0;i < n;i++)
#define rep(i,n) for(int i = 0;i < n;i++)
#define UNIQUE(v) v.erase( unique(v.begin(), v.end()), v.end() )

ll gcd(ll a, ll b) { return b ? gcd(b, a%b) : a; }
ll qp(ll a, ll b) { int ans = 1; do { if (b & 1)ans = 1ll * ans*a; a = 1ll * a*a; } while (b >>= 1); return ans; }
ll qp(ll a, ll b, int mo) { int ans = 1; do { if (b & 1)ans = 1ll * ans*a%mo; a = 1ll * a*a%mo; } while (b >>= 1); return ans; }

#define _GLIBCXX_DEBUG
#define debug(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << endl;
int main(void){
	
	int a,string s;cin >> a >> s;
	if(a >= 3200){
		cout << s << endl;
	}else{
		cout << "red" << endl;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:44:22: error: expected initializer before 's'
   44 |         int a,string s;cin >> a >> s;
      |                      ^
a.cc:44:36: error: 's' was not declared in this scope
   44 |         int a,string s;cin >> a >> s;
      |                                    ^
Language: C++

#include<iostream>
#include<algorithm>
using lint=int64_t;
using namespace std;

int main()
{
	int a;
	string s;

	cin >> a >> s;

	if(a>=3200)
	{
		cout << s;
	}
	else
		cout "red";
	cout << endl;
	return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:18:21: error: expected ';' before string constant
   18 |                 cout "red";
      |                     ^~~~~~
      |                     ;
Language: C++

#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <stdio.h>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>
#define rep(i,a,n) for(ll i =(a);i<(n);++i)
#define urep(i,a,n) for(ll i = (a);i>=(n);--i)
#define all(x) (x).begin(),(x).end()
#define INF 1e18
typedef long long ll;
const ll MAX=510000;
const ll mod = 1e9 + 7;
using namespace std;
ll dx[4] = { 1,-1,0,0 };
ll dy[4] = { 0,0,1,-1 };
ll N,M,X,Y,A,B,C,D,Q,K,R,W,H,P,L,G;
ll ans;
string S,T;
ll h[101010];
ll y[101010];
ll a[201010];
ll k[101010];
ll b[201010];
ll d[101010];
ll t[101010];
ll p[101010];
ll n[101010];
ll l[101010];
ll r[101010];
ll v[101010];
ll s[101010];
ll x[101010];
ll gcd(ll a, ll b) {
	if (b == 0)return a;
	else return gcd(b, a%b);
}
ll lcm(ll a,ll b){
    return a/gcd(a,b)*b;
}
struct Edge{
	ll to,cost;
	 Edge(ll to, ll cost) : to(to), cost(cost) {}
};
typedef vector<vector<Edge> > AdjList;
AdjList graph;
vector<ll> dist;

struct UnionFind {
    vector<ll> par; // par[i]:iの親の番号　(例) par[3] = 2 : 3の親が2
	vector<ll> size;
    UnionFind(ll N) : par(N),size(N) { //最初は全てが根であるとして初期化
        for(ll i = 0; i < N; i++) par[i] = i;
		for(ll i = 0; i < N; i++) size[i] = 1;
    }

    ll root(ll x) { // データxが属する木の根を再帰で得る：root(x) = {xの木の根}
        if (par[x] == x) return x;
        return par[x] = root(par[x]);
    }
	ll GetSize(ll x){
		return size[root(x)];
	}

    void unite(ll x, ll y) { // xとyの木を併合
        ll rx = root(x); //xの根をrx
        ll ry = root(y); //yの根をry
        if (rx == ry) return; //xとyの根が同じ(=同じ木にある)時はそのまま
        par[rx] = ry; //xとyの根が同じでない(=同じ木にない)時：xの根rxをyの根ryにつける
		size[ry]+=size[rx];

    }

    bool same(ll x, ll y) { // 2つのデータx, yが属する木が同じならtrueを返す
        ll rx = root(x);
        ll ry = root(y);
        return rx == ry;
    }
};

int main(){
    cin>>A>>S;
    if(a>=3200){
        cout<<S<<endl;
    }else{
        cout<<"red"<<endl;
    }
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:110:9: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
  110 |     if(a>=3200){
      |        ~^~~~~~
Language: C++

#include <bits/stdc++.h>

using namespace std;

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

    int a;
    cin >> a;
    string s;
    cin >> s;
    if (a >= 3200) {
        cout << s << endl;
    } else {
        couyt << "red" << endl;
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:9: error: 'couyt' was not declared in this scope
   16 |         couyt << "red" << endl;
      |         ^~~~~
Language: C++

#include "bits/stdc++.h"

using namespace std;
typedef long long ll;
#define rep(i, j, n) for (int i = j; i < n; i++)
#define out(ans) cout << ans << endl;
const long long mod = 1e9 + 7;

int main(){

  int a;cin>>a;
  string s;cin>>s;

  if(a>=3200)out(s);
  else out("red");

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:3: error: 'else' without a previous 'if'
   15 |   else out("red");
      |   ^~~~
Language: C++

逃げる理由なんてない

Compiler output:
a.cc:1:1: error: '\U00009003\U00003052\U0000308b\U00007406\U00007531\U0000306a\U00003093\U00003066\U0000306a\U00003044' does not name a type
    1 | 逃げる理由なんてない
      | ^~~~~~~~~~~~~~~~~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  double n,sum = 0.0;
  cin>>n;
  double a[n];
  for(double i=0.0;i<n;i++){
    cin>>a[i];
    }
  for(double i=0.0;i<n;i++){
    sum = sum + (1/a[i]);
    }
  cout<<1/sum<<endl;
  }
 
 

Compiler output:
a.cc: In function 'int main()':
a.cc:6:12: error: conversion from 'double' to 'long unsigned int' in a converted constant expression
    6 |   double a[n];
      |            ^
a.cc:6:12: error: could not convert 'n' from 'double' to 'long unsigned int'
    6 |   double a[n];
      |            ^
      |            |
      |            double
a.cc:6:12: error: size of array 'a' has non-integral type 'double'
a.cc:8:11: error: invalid types 'double [1][double]' for array subscript
    8 |     cin>>a[i];
      |           ^
a.cc:11:21: error: invalid types 'double [1][double]' for array subscript
   11 |     sum = sum + (1/a[i]);
      |                     ^
Language: C++

#include <cstdio>

int main() {
  int n;
  cin >> n;
  double sum = 0;
  for(int i = 0; i < n; i++) {
    double a;
    scanf("%lf", &a);
    sum += 1.0 / a;
  }
  printf("%.20lf\n", 1.0/sum);
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope
    5 |   cin >> n;
      |   ^~~
Language: C++

#include <cstdio>

int main() {
  int n;
  cin >> n;
  double sum = 0;
  for(int i = 0; i < n; i++) {
    double a;
    scanf("%ld", &a);
    sum += 1.0 / a;
  }
  printf("%.20lf\n", 1.0/sum);
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope
    5 |   cin >> n;
      |   ^~~
Language: C++

#include <cstdio>

int main() {
  int n;
  cin >> n;
  double sum = 0;
  for(int i = 0; i < n; i++) {
    double a;
    cin >> a;
    sum += 1.0 / a;
  }
  printf("%.20lf\n", 1.0/sum);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope
    5 |   cin >> n;
      |   ^~~
Language: C++

#include <bits/stdc++.h>
#define rep(i,N) for (int i = 0; i < (N); ++i)
#define all(v) v.begin(), v.end()
using namespace std;
using ll = long long;
using P = pair<int, int>;
int main(void){
  int N;
  cin >> N;
  vector <int> A(N);
  rep(i,N) cin >> A[i];

  double ans = 0.0;  //答えの分母
  rep(i,N){
    ans +=　1.0 / A[i];
  }
  ans = 1.0 / ans;
  cout << setprecision(10) << ans << endl;
}


Compiler output:
a.cc:15:11: error: extended character 　 is not valid in an identifier
   15 |     ans +=　1.0 / A[i];
      |           ^
a.cc: In function 'int main()':
a.cc:15:11: error: '\U000030001' was not declared in this scope
   15 |     ans +=　1.0 / A[i];
      |           ^~~
Language: C

#include<stdio.h>
int main()
{
int n,i,mul,bo;
  scanf("%d",&n);
 int a[n];
  mul=1;
  bo=0;
  
  for(i=0;i<n;++i)
  {
  scanf("%d",&a[i]);
  mul=mul*a[i];
  }
  
   for(i=0;i<n;++i)
  {
  bo=bo+mu/a[i];
  }

  printf("%.6f",mul/bo);
  
return 0;
}

Compiler output:
main.c: In function 'main':
main.c:18:9: error: 'mu' undeclared (first use in this function); did you mean 'mul'?
   18 |   bo=bo+mu/a[i];
      |         ^~
      |         mul
main.c:18:9: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int N;
  double ans=0.0,a;
  cin>>N;
  for(int i=1;i<=n;i++){
    cin>>a;
    ans+=1/a;
  }
  ans=1/ans;
  cout<<setprecision(16)<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:18: error: 'n' was not declared in this scope
    7 |   for(int i=1;i<=n;i++){
      |                  ^
Language: C

#include<stdio.h>
void main()
  { 
    int N,i;
    float a,fact=1.00,sum=0.00;
    scanf("%d",&N);
    int arr[101];
  for(i=0;i<N;i++)
    { 
    scanf("%d",&arr[i]);
    }
 if(N>1)
 {
    for(i=0;i<N;i++)
    { 
      fact=fact*arr[i];
    sum=sum+arr[i];
    }
 
  a=fact/sum;
  printf("%.5f",a);
 if(N==1)
 {
  printf("%d",arr[0]);
 }
 }

  

Compiler output:
main.c: In function 'main':
main.c:26:2: error: expected declaration or statement at end of input
   26 |  }
      |  ^
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main() {
  int N;
  
  cin >> N;
  
  vector<int> l;
  
  for (int i = 0; i < N; i++) {
    int _in;
    
    cin >> _in;
    
    l.push_back(_in);
  }
  
  int u = 1; d = 0;
  for (int i = 0; i < N; i++) {
    u *= l[i];
    d += l[i];
  }
  
  cout << (double)u / d << endl;
  
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:20:14: error: 'd' was not declared in this scope
   20 |   int u = 1; d = 0;
      |              ^
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main() {
  int N;
  
  cin >> N;
  
  vector<int> l;
  
  for (int i = 0; i < N; i++) {
    int _in;
    
    cin >> _in;
    
    l.push_back(_in);
  }
  
  int u = 1; d = 0;
  for (int i = 0; i < N; i++) {
    u *= l.push_back(i);
    d += l.push_back(i);
  }
  
  cout << (double)u / d << endl;
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:14: error: 'd' was not declared in this scope
   20 |   int u = 1; d = 0;
      |              ^
a.cc:22:21: error: void value not ignored as it ought to be
   22 |     u *= l.push_back(i);
      |          ~~~~~~~~~~~^~~
Language: C++

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

int main(){
  int N ;
  int >> N ; 
  double  C = 0 ; 
  vector<double> A(N)  , B(N) ; 
  
  for(int i = 0 ; i < N ; i++){
    cin >> A[i] ; 
    B[i] = 1/A[i]  ;
    C = C + B[i] ; 
  }
  
  
  cout << 1/C << endl ; 
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:7: error: expected unqualified-id before '>>' token
    6 |   int >> N ;
      |       ^~
Language: C++

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

int main() {
  int N;
  cin >> N;
  vector<int> A(N);
  for (int i=0; i<N; i++) {
    cin >> A.at(i);
  }
  double r=0;
  for (int j=0; j<N; j++) {
    r=r+(1/A.at(j)):
  }
  cout << 1/r << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:20: error: expected ';' before ':' token
   16 |     r=r+(1/A.at(j)):
      |                    ^
      |                    ;
Language: C++

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

int main() {
  double A;
  cin >> A;
  int X;
  sum = 0;
 for(int i = 0;i < A;i++){
   cin >> X;
   sum += X;
   cin >> sum
}
 double H = sum / A;
  double C = A * A;
  cout << H / C << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: 'sum' was not declared in this scope
    8 |   sum = 0;
      |   ^~~
Language: C++

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

int main() {
  double A;
  cin >> A;
  int X;
  sum = 0;
 for(int i = 0;i < A;i++){
   cin >> X;
   sum += X;
}
 double H = sum / A;
  cout << H / A << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: 'sum' was not declared in this scope
    8 |   sum = 0;
      |   ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int gcd(int x,int y){/*最大公約数,x≧yじゃないといけない*/if(x%y==0)return y;return gcd(y,x%y);}

int lcm(int x,int y){/*最小公倍数*/return x*y/gcd(x,y);}

int main() {
  int n;cun>>n;vector<int>v(n);cin>>v[0];
  int g[110];g[0]=v[0];
  for(int i=1;i<n;i++){
    cin>>v[i];
  }
  sort(v.begin(),v.end());
  for(int i=1;i<n;i++){
    g[i]=gcd(g[i],g[i-1]);
  }int sum=0;
  for(int i=0;i<n;i++){
    sum+=g[n-1]/v[i];
  }
  cout<<g[n-1]/sum<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: 'cun' was not declared in this scope
    8 |   int n;cun>>n;vector<int>v(n);cin>>v[0];
      |         ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int gcd(int x,int y){/*最大公約数,x≧yじゃないといけない*/if(x%y==0)return y;return gcd(y,x%y);}

int lcm(int x,int y){/*最小公倍数*/return x*y/gcd(x,y);}

int main() {
  int n;cun>>n;vector<int>v(n);cin>>v[0];
  int g[110];g[0]=v[0];
  for(int i=1;i<n;i++){
    cin>>v[i];
  }
  sort(v.begin(),v.end());
  for(int i=1;i<n;i++){
    g[i]=gcd(g[i],g[i-1]);
  }int sum=0;
  for(int i=0;i<n;i++){
    sum+=gcd[n-1]/v[i];
  }
  cout<<g/sum<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: 'cun' was not declared in this scope
    8 |   int n;cun>>n;vector<int>v(n);cin>>v[0];
      |         ^~~
a.cc:18:13: error: invalid types '<unresolved overloaded function type>[int]' for array subscript
   18 |     sum+=gcd[n-1]/v[i];
      |             ^
a.cc:20:10: error: invalid operands of types 'int [110]' and 'int' to binary 'operator/'
   20 |   cout<<g/sum<<endl;
      |         ~^~~~
      |         | |
      |         | int
      |         int [110]
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[i];
  }
 
  vector<double> b(n);
  for(int j=0; j<n; j++){
    b[j] = 1.0 / a[i];
  }
  
  double sum=0.0;
  for(int k=0; k<n; k++){
    sum += b[k];
  }
  
  cout << fixed << setprecision(15);
  
  cout << sum << endl;
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:20: error: 'i' was not declared in this scope
   15 |     b[j] = 1.0 / a[i];
      |                    ^
Language: Java

class Main {
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();
		double b = 0;
		for (int i = 0; i < n; i++) {
			double a = sc.nextDouble();
			b += 1 / a;
		}
		System.out.println(1 / b);
	}
}

Compiler output:
Main.java:4: error: cannot find symbol
		Scanner sc = new Scanner(System.in);
		^
  symbol:   class Scanner
  location: class Main
Main.java:4: error: cannot find symbol
		Scanner sc = new Scanner(System.in);
		                 ^
  symbol:   class Scanner
  location: class Main
2 errors
Language: Java

import java.util.Scanner;
public class Main{
  public static void main(String[]args){

    Scanner scan = new Scanner(System.in);

    double ans = 0;
    for(int i=0;i<c;i++){
      double t = (double) scan.nextInt();
      ans += 1.0/t;
    }
    
    System.out.println(1.0/ans);
  }
}

Compiler output:
Main.java:8: error: cannot find symbol
    for(int i=0;i<c;i++){
                  ^
  symbol:   variable c
  location: class Main
1 error
Language: Java

import java.util.Scanner;
public class Main{
  public static void main(String[]args){
    Scanner scan = new Scanner(System.in);
    
    int c = scan.nextInt();
    double ans = 0;
    for(int i=0;i<c;c++){
      double t = scan.nextInt();
      ans += 1.0/t;
    }
    
    System.out.println(1.0/t);
  }
}

Compiler output:
Main.java:13: error: cannot find symbol
    System.out.println(1.0/t);
                           ^
  symbol:   variable t
  location: class Main
1 error
Language: C++

#include<bits/stdc++.h>
#define rep(i,n) for(int i = 0;i<n;i++)
using namespace std;
using ll = long long;
int main(){
  int a,b,sum=0;
  cin >> a;
  rep(i,n){cin >> b;sum += 1.0/b;}
   cout << fixed << setprecision(15) << 1.0/sum << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: 'n' was not declared in this scope
    8 |   rep(i,n){cin >> b;sum += 1.0/b;}
      |         ^
a.cc:2:34: note: in definition of macro 'rep'
    2 | #define rep(i,n) for(int i = 0;i<n;i++)
      |                                  ^
Language: C++

#include<bits/stdc++.h>
#define rep(i,n) for(int i = 0;i<n;i++)
using namespace std;
using ll = long long;
int main(){
  int n,a=0;
  int index=1;
  ll sums=0;
  cin >> n;
  vector<int>num(n);
  rep(i,n)cin >> num[i];
  sort(num.begin(),num.end());
  while(1){
    ans = true;
  	rep(i,n)if((num[n-1] * index) % num[i]!=0)ans = false;
    index++;
    if(ans)break;
  }
  rep(i,n)sums += (num[n-1] * index)/num[i];
  double res = double((num[n-1] * index))/double(sums);
  
  
   cout << fixed << setprecision(15) << res << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:5: error: 'ans' was not declared in this scope; did you mean 'abs'?
   14 |     ans = true;
      |     ^~~
      |     abs
Language: C++

#include <iostream>
using namespace std;

int main() {
	int N;
	cin >> N;
	double sum=0;
	for (int i=0; i<N; i++) {
	    int A;
        cin >> A;
	    sum+=1.0/A;
	}
	double ans=1.0/sum;
	cout << setprecision(20) << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:17: error: 'setprecision' was not declared in this scope
   14 |         cout << setprecision(20) << ans << endl;
      |                 ^~~~~~~~~~~~
a.cc:2:1: note: 'std::setprecision' is defined in header '<iomanip>'; this is probably fixable by adding '#include <iomanip>'
    1 | #include <iostream>
  +++ |+#include <iomanip>
    2 | using namespace std;
Language: C

#include<stdio.h>
int main()
{
 int n;               
 float ans;                
 int r2;
 int i;                    
 float temp;
 scanf("%d",&n);
 scanf("%f",&ans);
 for(i=1;i<n;i++)
 {
     scanf("%d",&r2);
     temp=(1/er)+((1/(float)r2));       
     ans=(1/temp);
 }
 printf("%f",ans);
 return 0;
}

Compiler output:
main.c: In function 'main':
main.c:14:14: error: 'er' undeclared (first use in this function)
   14 |      temp=(1/er)+((1/(float)r2));
      |              ^~
main.c:14:14: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include <algorithm>
#include <bits/stdc++.h>
#include <unordered_map>
#include <unordered_set>
using namespace std;
#define int long long
#define ld long double
#define sb __builtin_popcount
#define vi vector<int>
#define vc vector<char>
#define ii pair<int, int>
#define pq priority_queue<int>
#define vii vector<ii>
#define for0(i, n) for (int i = 0; i < n; i++)
#define for1(i, n) for (int i = 1; i <= n; i++)
#define loop(i,a,b) for (int i = a; i < b; i++)
#define rloop(i,a,b) for (int i = a ; i>=b;i--)
#define tr(x, m) for (auto x : m)
#define ainb(a, b) (b.find(a) != string::npos)
#define minin(a) *min_element(all(a))
#define maxin(a) *max_element(all(a))
#define X first
#define Y second
#define sz(s) s.size()
#define fill(a, x) memset(a, x, sizeof(a))
#define pb push_back
#define pf push_front
#define mp make_pair
#define all(v) v.begin(), v.end()
#define rall(v) reverse(v.begin(), v.end())
#define unq(v) v.erase(unique(all(v)), v.end())
#define el "\n"
#define mx3(a, b, c) max(max(a, b), c)
#define mn3(a, b, c) min(min(a, b), c)
#define S(v) accumulate(all(v), (int)0)
#define SP(n) cout.precision(n)
#define PI = atan(1.0) * 4.0;
#define MOD = 1e9 + 7;
#define rr return 0;
template<typename... T>
void in(T&... args) {
    ((cin >> args), ...);
}

template<typename... T>
void out(T&&... args) {
    ((cout << args << " "), ...);
}
template<typename... T>
void outel(T&&... args) {
    ((cout << args << endl), ...);
}
void start() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    SP(10);
#ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif
}
int gcd(int a, int b)
{
    if (b == 0)
        return a;
    return gcd(b, a % b);
}
int findlcm(int arr[], int n)
{
    int ans = arr[0];
    for (int i = 1; i < n; i++)
        ans = (((arr[i] * ans)) /
               (gcd(arr[i], ans)));

    return ans;
}
int main() {
    start();
    int n;
    cin >> n;
    int a[n];
    for (int i = 0; i < n; i++)cin >> a[i];
    ld lcm = findlcm(a, n);
    ld sm = 0;
    for (int i = 0; i < n; i++)sm += lcm / a[i];
    ld  ans  = lcm / sm;
    cout << ans;
    rr;
}

Compiler output:
cc1plus: error: '::main' must return 'int'
Language: C++

#include <bits/stdc++.h>
#define ll long long int

using namespace std;



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

	ll n;
	cin >> n;
	ll a[n];
	for (ll i = 0; i < n; i++)
	{
		cin >> a[i];
	}
	if (n == 1)
	{
		cout << a[0] << "\n";
	}
	else
	{
		ld sum = 0;
		for (ll i = 0; i < n; i++)
		{
			sum += float(1) / float(a[i]);
		}
		ld res = 1 / sum;
		cout << fixed << setprecision(5) << res << "\n";
	}
}



Compiler output:
a.cc: In function 'int main()':
a.cc:25:17: error: 'ld' was not declared in this scope; did you mean 'll'?
   25 |                 ld sum = 0;
      |                 ^~
      |                 ll
a.cc:28:25: error: 'sum' was not declared in this scope
   28 |                         sum += float(1) / float(a[i]);
      |                         ^~~
a.cc:30:19: error: expected ';' before 'res'
   30 |                 ld res = 1 / sum;
      |                   ^~~~
      |                   ;
a.cc:31:53: error: 'res' was not declared in this scope
   31 |                 cout << fixed << setprecision(5) << res << "\n";
      |                                                     ^~~
Language: C++

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

int main() {
    int n;
    cin >> n;    
    long double ans = 0.0;

    for (int i = 0; i < n; i++) {
    	int x; cin >> x;
    	ans += 1.0 / a[i];
    }

    cout << fixed << setprecision(12) << 1.0 / ans << "\n";

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:22: error: 'a' was not declared in this scope
   11 |         ans += 1.0 / a[i];
      |                      ^
Language: C++

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

int main() {
    int n;
    cin >> n;    
    double ans = 0.0;

    for (int i = 0; i < n; i++) {
    	int x; cin >> x;
    	ans += 1.0 / a[i];
    }

    cout << setprecision(12) << 1.0 / ans << "\n";

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:22: error: 'a' was not declared in this scope
   11 |         ans += 1.0 / a[i];
      |                      ^
Language: C++

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

int main() {
    int n;
    cin >> n;    
    double ans = 0.0;

    for (int i = 0; i < n; i++) {
    	int x; cin >> x;
    	ans += 1 / a[i];
    }

    cout << setprecision(12) << 1 / ans << "\n";

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:20: error: 'a' was not declared in this scope
   11 |         ans += 1 / a[i];
      |                    ^
Language: C

#include<stdio.h>
int main(void){
  int i,n,a[110];
  double a,b;
  scanf("%d",&n);
  for(i=0;i<n;i++)
    scanf("%d",&a[i]);
  for(i=0;i<n;i++)
    a+=(double)1/a[i];
    b=1/a;
  printf("%.5lf\n",b);
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:10: error: conflicting types for 'a'; have 'double'
    4 |   double a,b;
      |          ^
main.c:3:11: note: previous declaration of 'a' with type 'int[110]'
    3 |   int i,n,a[110];
      |           ^
Language: C

#include<stdio.h>
int main()
  { 
    int N,i;
    float a,fact=1.00;sum=0.00;
    scanf("%d",&N);
    int arr[N];
  for(i=0;i<N;i++)
    { 
    scanf("%d",&arr[i]);
    }
  for(i=0;i<N;i++)
    { 
      fact=fact*arr[i];
    }
  for(i=0;i<N;i++)
    { 
      sum=sum+fact/arr[i];
    }
  a=fact/sum;
  printf("%.2f",a);
  return 0;
  }
  
  
    


Compiler output:
main.c: In function 'main':
main.c:5:23: error: 'sum' undeclared (first use in this function)
    5 |     float a,fact=1.00;sum=0.00;
      |                       ^~~
main.c:5:23: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>
int main()
  { 
    int N,i,sum=0;fact=1,a;
    scanf("%d",&N);
    int arr[N];
  for(i=0;i<N;i++)
    { 
    scanf("%d",&arr[i]);
    }
  for(i=0;i<N;i++)
    { 
      fact=fact*arr[i];
    }
  for(i=0;i<N;i++)
    { 
      sum=sum+fact/arr[i];
    }
  a=fact/sum;
  printf("%d",a);
  return 0;
  }
  
  
    


Compiler output:
main.c: In function 'main':
main.c:4:19: error: 'fact' undeclared (first use in this function)
    4 |     int N,i,sum=0;fact=1,a;
      |                   ^~~~
main.c:4:19: note: each undeclared identifier is reported only once for each function it appears in
main.c:4:26: error: 'a' undeclared (first use in this function)
    4 |     int N,i,sum=0;fact=1,a;
      |                          ^
Language: C

#include<stdio.h>
int main()
  { 
    int N,i,sum=0;fact=1;
    scanf("%d",&N);
    int arr[N];
  for(i=0;i<N;i++)
    { 
    scanf("%d",&arr[i]);
    }
  for(i=0;i<N;i++)
    { 
      fact=fact*arr[i];
    }
  for(i=0;i<N;i++)
    { 
      sum=sum+fact/arr[i];
    }
  printf("%d",fact/sum);
  return 0;
  }
  
  
    

Compiler output:
main.c: In function 'main':
main.c:4:19: error: 'fact' undeclared (first use in this function)
    4 |     int N,i,sum=0;fact=1;
      |                   ^~~~
main.c:4:19: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

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

int main(){
    int N;
    cin >> N;
    int X = 0;
    double cnt = 0;
    while(X < N) {
        double A;
        cin >> A;
        cnt+=1.0/A;
        X++;
    }
    cout << fixed << setpresicion(10) << 1.0/cnt << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:22: error: 'setpresicion' was not declared in this scope
   15 |     cout << fixed << setpresicion(10) << 1.0/cnt << endl;
      |                      ^~~~~~~~~~~~
Language: C++

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

int main(){
  double n,m,ans=0;
  cin>>n;
  rep(i,n){
    cin>>m;
    m=1/m;
    sum+=m;
  }
  sum=1/sum;
  cout<<sum;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:5: error: 'sum' was not declared in this scope
   15 |     sum+=m;
      |     ^~~
a.cc:17:3: error: 'sum' was not declared in this scope
   17 |   sum=1/sum;
      |   ^~~
Language: C

#include<stdio.h>
int main()
{
int n,i;
  scanf("%d",&n);
int a[n];
long float b[n],f;
  f=0;
  for(i=0;i<n;++i)
  {
  scanf("%d",&a[i]);
  b[i]=1/a[i];
  f=f+b[i];
  }

  printf("%lf",1/f);

return 0;
}


Compiler output:
main.c: In function 'main':
main.c:7:6: error: both 'long' and 'float' in declaration specifiers
    7 | long float b[n],f;
      |      ^~~~~
Language: C++

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

int main(){
  int n;
  cin >> n;
  int a(n);
  rep(i,n){
    cin >> a[i];
    }
    double ans=0;
    rep(i,n){
      ans += (double)1/a[i];
    }
    ans  = 1/ans;
    cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:13: error: invalid types 'int[int]' for array subscript
   11 |     cin >> a[i];
      |             ^
a.cc:15:25: error: invalid types 'int[int]' for array subscript
   15 |       ans += (double)1/a[i];
      |                         ^
Language: C++

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

int main(){
  double ans=0;
  double N;
  cin>>N;
  vector<double>A(N);
  for(int i=0;i<N;i++){
    cin>>A[i];
  }
  for(int i=0;i<N;i++){
    ans+=1/A[i];
  }
  cout<<1/ans<<endl;
}

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

#include<bits/stdc++.h>
using namespace std;
int main() {
  int N;
  cin>>N;
  double A[N] sum=0;
  for(int i=0;i<N;i++) {
    cin>>A[i];
    sum+=1/A[i];
  }
  cout<<1/sum<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:15: error: expected initializer before 'sum'
    6 |   double A[N] sum=0;
      |               ^~~
a.cc:8:10: error: 'A' was not declared in this scope
    8 |     cin>>A[i];
      |          ^
a.cc:9:5: error: 'sum' was not declared in this scope
    9 |     sum+=1/A[i];
      |     ^~~
a.cc:11:11: error: 'sum' was not declared in this scope
   11 |   cout<<1/sum<<endl;
      |           ^~~
Language: C++

#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
#define rep(i,N) for(int i = 0; i < (N); i++)
#define repo(i,N) for(int i = 1; i < (N); i++)
#define int long long
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define all(x) (x).begin(),(x).end()
//#define num 1000000007
#define pi acos(-1.0)
//cout << fixed << setprecision (20);   小数点以下2０桁まで
//intの最大値2147483647 ≒ 2×10^9
//long longの最大値9223372036854775807 ≒ 9×10^18
//'大文字'+=32;    で小文字に
//string s = to_string(int数);
//int n = stoi(string文字列);

int main() {
  int n;
  cin >>n;
 
  int seki = 1;
  vector<int> p(n);
  rep(i,n) {
  cin >> p[i];
  seki*=p[i];
  }
  
  int bunbo = 0;
  rep(i,n) {
  bunbo+=seki/p[i];
  }
  
  cout << fixed << setprecision (20);
  cout << (double)seki/bunbo << endl;
  
}


Compiler output:
cc1plus: error: '::main' must return 'int'
Language: C

#include<stdio.h>
int main()
{
	int n,a[101];
	double s=0.0;

	scanf("%d",&n);
	for(i=0;i<n;i++)
		scanf("%d",&a[i]);
	for(i=0;i<n;i++)
		s+=1.0/a[i];
	printf("%lf",1/s);
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:8:13: error: 'i' undeclared (first use in this function)
    8 |         for(i=0;i<n;i++)
      |             ^
main.c:8:13: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int n;
  double ans=0.0,a;
  cin>>n;
  for(int i=;i<=n;i++){
    cin>>a;
    ans+=a;
  }
  ans=1.0/ans;
  cout<<setprecision(16)<<ans<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:13: error: expected primary-expression before ';' token
    7 |   for(int i=;i<=n;i++){
      |             ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define REP(i, n) for (int i = 0; i < n; i++)
int main() {
  int n;
  cin >> n;
  double ans = 0;
  double a;
  REP(i, n) {
    cin >> a;
    ans += 1 / a;
  }
  ans = 1 / ans;
  cout << setprecision(16) << ans << endl;

Compiler output:
a.cc: In function 'int main()':
a.cc:14:43: error: expected '}' at end of input
   14 |   cout << setprecision(16) << ans << endl;
      |                                           ^
a.cc:4:12: note: to match this '{'
    4 | int main() {
      |            ^
Language: C

#include <sstdio.h>

int main(void)
{
    int n,a[100],i;
    double x,y,z;
      
    scanf("%d",&n);
  
    for(i=0;i<n;i++){
        scanf("%d",&a[i]);
        x=(double)1/a[i];
        y=y+x;
    }
    z=(double)1/y;
    printf("%lf",z);
  
  return 0;
}  

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

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


int main() {
  int n;
  double s = 0;
  rep(i,n) {
    int a;
    cin >> a;
    sum += 1.0/a;
  }
  double ans = 1/sum;
  printf("%.10f\n", ans);
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:5: error: 'sum' was not declared in this scope
   13 |     sum += 1.0/a;
      |     ^~~
a.cc:15:18: error: 'sum' was not declared in this scope
   15 |   double ans = 1/sum;
      |                  ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
typedef long long ll;
#define _GLIBCXX_DEBUG
typedef vector<int> vec;
typedef vector<ll> lvec;
typedef vector<char>cvec;
typedef pair<ll, ll> LP;
typedef tuple<ll, ll, ll> LT;
typedef pair<int, int> P;
typedef tuple<int, int, int> T;
int main()	{
  int n,sum=0;
  cin>>n;
  vector<int>a(n);
  rep(i,n) {
    cin>>a[i];
    vector<double>b(n,1/a[i]);
  }
  rep(i,n)
    sum+=b[i];
  double ans=1/sum;
  cout<<fixed<<setprecision(10)<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:10: error: 'b' was not declared in this scope
   24 |     sum+=b[i];
      |          ^
Language: C

#include <stdio.h>
int main (void)
{
    int i,j,k,N;
    double s=0,a[1000],b[1000];
    scanf("%d",&N);
    for(i=o;i<=N;i++)
        scanf("%lf",&a[i]);
    for(j=0;j<=N;j++)
        b[j]=1/a[j];
    for(k=0;k<=N;k++)
        s=b[k];
    printf("%lf\n",1/s);

    return 0 ;
}


Compiler output:
main.c: In function 'main':
main.c:7:11: error: 'o' undeclared (first use in this function)
    7 |     for(i=o;i<=N;i++)
      |           ^
main.c:7:11: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>
int main (void)
{
    int i,j,l,N;
    double s=0,a[1000],b[1000];
    scanf("%d",&N);
    for(i=o;i<=N;i++)
        scanf("%lf",&a[i]);
    for(j=0;j<=N;j++)
        b[j]=1/a[j];
    for(k=0;k<=N;k++)
        s=b[k];
    printf("%lf\n",1/s);

    return 0 ;
}


Compiler output:
main.c: In function 'main':
main.c:7:11: error: 'o' undeclared (first use in this function)
    7 |     for(i=o;i<=N;i++)
      |           ^
main.c:7:11: note: each undeclared identifier is reported only once for each function it appears in
main.c:11:9: error: 'k' undeclared (first use in this function)
   11 |     for(k=0;k<=N;k++)
      |         ^
Language: C++


#include <iostream>
#include <iomanip> 
#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() {
	
	double_t N;
	double L;
	cin >> N;
	vector<int> vec(N);
	for (int i = 0; i < N; i++) {
		cin >> vec.at(i);
	}

	L = 0;
	for (int i = 0; i < N; i++) {
			L += 1.0000 / vec.at(i);
		}
	double ans = 1.0000 / L;
	cout << std::fixed << ans << endl;
	// cout << std::fixed << std::setprecision(14) << ans << endl;
			
	}
	

Compiler output:
a.cc: In function 'int main()':
a.cc:21:9: error: 'double_t' was not declared in this scope; did you mean 'double'?
   21 |         double_t N;
      |         ^~~~~~~~
      |         double
a.cc:23:16: error: 'N' was not declared in this scope
   23 |         cin >> N;
      |                ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
int A;
  cin>>A;
  double b=0;
  vector<int> a(A);
  for(int i=0;i<A;i++){
  cin>>a.at(i);
    
  }
  for(int i=0;i<A;i++){
   b+=1/(a.at(i))
  
  }
  cout<<1/b<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:18: error: expected ';' before '}' token
   13 |    b+=1/(a.at(i))
      |                  ^
      |                  ;
   14 | 
   15 |   }
      |   ~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
vector<int> input(int N) {
  vector<int> vec(N);
  for (int i = 0; i < N; i++) {
    cin >> vec.at(i);
  }
  return vec;
}

int main() {
  int n;
  cin >> n;
  vector<int> v=input(n);
  
  rep(i,n){
    (double)(v[i]) = 1/(double)(v[i]);
  }
  double sum=0;
  rep(i,n){
    sum += v[i];
    }
  cout << 1/sum << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:5: error: lvalue required as left operand of assignment
   18 |     (double)(v[i]) = 1/(double)(v[i]);
Language: C++

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

int main(int argc, char const *argv[]) {

    int N;
    double sum=0;

    cin >> N;
    for (int i = 0; i < N; i++) {
        cin >> A;
        sum += 1.0/double(A);
    }

    cout << 1.0/sum << endl;

    return 0;
}


Compiler output:
a.cc: In function 'int main(int, const char**)':
a.cc:11:16: error: 'A' was not declared in this scope
   11 |         cin >> A;
      |                ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
int N;
  vector <int> A(N);
  for(int i=0;i<N;i++)
    cin>>A.at(i);
  int sum1=0;
  for(int i=0;i<N;i++)
    sum+=A.at(i);
  int sum2=1;
  for(int i=0;i<N;i++)
    sum2*=A.at(i);
  
 cout<<fixed<<setprecision(7)<<(double)sum2/(double)sum1<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:5: error: 'sum' was not declared in this scope; did you mean 'sum1'?
   10 |     sum+=A.at(i);
      |     ^~~
      |     sum1
Language: C++

//============================================================================
// Name        : b.cpp
// Author      :
// Version     :
// Copyright   : Your copyright notice
// Description : Hello World in C++, Ansi-style
//============================================================================

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

int main() {
	int n;cin>>n;
	vector<double> a(n);
	double den=0;
	for(int i=0;i<n;i++){
		cin>>a[i];
		den+=1/a[i];
	}
	cout << fixed << setprecision(15) <<1/den<<endl;

	return 0;

Compiler output:
a.cc: In function 'int main()':
a.cc:24:18: error: expected '}' at end of input
   24 |         return 0;
      |                  ^
a.cc:14:12: note: to match this '{'
   14 | int main() {
      |            ^
Language: C

#include<stdio.h>
#include<string.h>
#include<stdlib.h>

int main(){
  int n;
  double a[104];
  double sum = 0;

  for(i = 0;i < n;i++){
    scanf("%lf", &a[i]);
    sum += 1.0/a[i];
  }

  printf("%f\n", 1.0/sum);
  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:10:7: error: 'i' undeclared (first use in this function)
   10 |   for(i = 0;i < n;i++){
      |       ^
main.c:10:7: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

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

int main() {
	int n,i,j;
	double sum;
	cin >> n;

	for (int m = 0; m < n; m++) {
		cin >> i;
		sum += 1.0/(double)i;
	}

	sum = 1.0/sum

	cout << sum << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:22: error: expected ';' before 'cout'
   14 |         sum = 1.0/sum
      |                      ^
      |                      ;
   15 | 
   16 |         cout << sum << endl;
      |         ~~~~
Language: C++

#include<iostream>
using namespace std;
int main(){
int N;
  cin>>N;
  int A[N];
  int sum=0;
  int xsum=1;
  for (int i=0; i<N; i++) cin>>A[i];
  for (int i=0; i<N; i++) sum+=A[i]
  for (int i=0; i<N; i++) xsum*=A[i]
    cout<<xsum/sum<<endl;}
                                  
                              

Compiler output:
a.cc: In function 'int main()':
a.cc:10:36: error: expected ';' before 'for'
   10 |   for (int i=0; i<N; i++) sum+=A[i]
      |                                    ^
      |                                    ;
   11 |   for (int i=0; i<N; i++) xsum*=A[i]
      |   ~~~                               
a.cc:11:17: error: 'i' was not declared in this scope
   11 |   for (int i=0; i<N; i++) xsum*=A[i]
      |                 ^
Language: C++

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

float gcd(float x, float y)
{
    if (y == 0)
        return x;
    return gcd(y, fmod(x, y));
}

float lcm(float x, float y)
{
    return x * y / gcd(x, y);
}

float main()
{
    int n;
    vector<ll> a(n);

    cin >> n;
    for (int i = 0; i < n; i++)
    {
        cin >> a[i];
    }
    float max_lcm = a[0];

    for (int i = 1; i < n; i++)
    {
        max_lcm = lcm(max_lcm, a[i]);
    }
    float sum = 0;
    for (int i = 0; i < n; i++)
    {
        sum += max_lcm / a[i];
    }

    cout << max_lcm / sum << endl;
}


Compiler output:
a.cc:21:1: error: '::main' must return 'int'
   21 | float main()
      | ^~~~~
Language: C++

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

int main() {
  int N;
  cin >> N;
  vector<double> a(N);
  for (int i = 0;i < N; i++) {
    cin >> a.at(i);
  }
  int k,
  int ans = 0;
  for (double x: a) {
    k = 1/x;
    ans += k;
  }
  
  cout << fixed << setprecision(10);
  
  cout << 1/ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:3: error: expected unqualified-id before 'int'
   12 |   int ans = 0;
      |   ^~~
a.cc:15:5: error: 'ans' was not declared in this scope; did you mean 'abs'?
   15 |     ans += k;
      |     ^~~
      |     abs
a.cc:20:13: error: 'ans' was not declared in this scope; did you mean 'abs'?
   20 |   cout << 1/ans << endl;
      |             ^~~
      |             abs
Language: C++

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


int main(){
    int n;
    cin >> n  ;
    double a[n] ;
    for(int i=0;i<n;++i) cin >> a[i] ;

    double tmp = 0 ;
    for(int i=0;i<n;++i){
    tmp = 1.0/a[i] ;
    }
    
    cout << setprecision(9) << fixed << 1.0/tmp << endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:13: error: 'setprecision' was not declared in this scope
   17 |     cout << setprecision(9) << fixed << 1.0/tmp << endl;
      |             ^~~~~~~~~~~~
a.cc:3:1: note: 'std::setprecision' is defined in header '<iomanip>'; this is probably fixable by adding '#include <iomanip>'
    2 | #include<algorithm>//next_permutation
  +++ |+#include <iomanip>
    3 | using namespace std;
Language: C++

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


int main(){
    int n;
    cin >> n  ;
    double a[n] ;
    for(int i=0;i<n;++i) cin >> a[i] ;

    double tmp = 0 ;
    for(int i=0;i<n;++i){
    tmp = 1.0/v[i] ;
    }
    
    cout << 1.0/tmp << endl;

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:15: error: 'v' was not declared in this scope
   14 |     tmp = 1.0/v[i] ;
      |               ^
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);
  }
  double S=0;
for (int i = 0; i < N; i++) {
 S +=(1/A[i])
}
double T=0;
  T =1/S;
  cout <<T<<endl;
  
}



Compiler output:
a.cc: In function 'int main()':
a.cc:13:14: error: expected ';' before '}' token
   13 |  S +=(1/A[i])
      |              ^
      |              ;
   14 | }
      | ~