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

#define f(n) for(int i=0; i<n; i++)
#define vin(v,n) f(n){int a;cin>>a; v.push_back(a);}
#define ll long long int 
#define vint vector <int> 

vint fun(vint v, vint c, int n){
  vint arr;
  int z = v.size();
  arr.push_back(v[z-1]);
  for(int i=0; i<v.size(); i++){
    arr.push_back(v[i]);
    //c[i] -= n-i+1;
  }
  v.push_back(v[v.size()-1]);
  int index = 0;
  int i = 0;
  while(arr.size() < n){
    i++;
    if(c[index] > n-i){
      
      arr.push_back(v[index]);
      c[index] -= n-i;
    }
    else if(c[index] == n-i){
      arr.push_back(v[index]);
      
      index++;
    }
    else{
      index++;
    }
  }
  return arr;
}

int main() 
{
  int t; 
  cin>>t;
  while(t--){
    int n;
    cin>>n;
    int x = (n * (n-1) )/ 2;
    int arr[x];
    for(int i=0; i<x; i++){
      cin>>arr[i];
    }
    sort(arr, arr+x);
    vint v;
    vint c;
    int count = 0;
    count++;
    for(int i=0; i<x-1; i++){
      if(arr[i] == arr[i+1]){
        count++;
      }
      else{
        v.push_back(arr[i]);
        c.push_back(count);
        count = 1;
      }
    }
    v.push_back(arr[x-1]);
    c.push_back(count);
    vint ans = fun(v,c,n);
    for(int i=0; i<n; i++){
      cout<<ans[i]<<" ";
    }
    cout<<endl;
  }
  
  
  return 0;
}

C++ Online Compiler

Write, Run & Share C++ code online using OneCompiler's C++ online compiler for free. It's one of the robust, feature-rich online compilers for C++ language, running on the latest version 17. Getting started with the OneCompiler's C++ compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as C++ and start coding!

Read inputs from stdin

OneCompiler's C++ online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.

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

int main() 
{
    string name;
    cout << "Enter name:";
    getline (cin, name);
    cout << "Hello " << name;
    return 0;
}

About C++

C++ is a widely used middle-level programming language.

  • Supports different platforms like Windows, various Linux flavours, MacOS etc
  • C++ supports OOPS concepts like Inheritance, Polymorphism, Encapsulation and Abstraction.
  • Case-sensitive
  • C++ is a compiler based language
  • C++ supports structured programming language
  • C++ provides alot of inbuilt functions and also supports dynamic memory allocation.
  • Like C, C++ also allows you to play with memory using Pointers.

Syntax help

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition If-Else is used.

if(conditional-expression) {
   //code
}
else {
   //code
}

You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.

2. Switch:

Switch is an alternative to If-Else-If ladder.

switch(conditional-expression){    
case value1:    
 // code    
 break;  // optional  
case value2:    
 // code    
 break;  // optional  
......    
    
default:     
 code to be executed when all the above cases are not matched;    
}

3. For:

For loop is used to iterate a set of statements based on a condition.

for(Initialization; Condition; Increment/decrement){  
  //code  
}

4. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while (condition) {  
// code 
}

5. Do-While:

Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.

do {  
 // code 
} while (condition);

Functions

Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity. Function gets run only when it is called.

How to declare a Function:

return_type function_name(parameters);

How to call a Function:

function_name (parameters)

How to define a Function:

return_type function_name(parameters) {  
 // code
}