// C++ implementation of the above approach 

#include <bits/stdc++.h> 
#include <ext/pb_ds/assoc_container.hpp> 
#include <ext/pb_ds/tree_policy.hpp> 
using namespace std; 
using namespace __gnu_pbds;

#define ll long long int;

typedef tree<pair<int, int>,null_type,less<pair<int, int> >,rb_tree_tag,tree_order_statistics_node_update> indexed_set; 


int cnt = 0; 

indexed_set mySet; 


void insert(int n, int arr[]) 
{ 
	for (int i = 0; i < n; i++) { 
		mySet.insert({ arr[i], cnt }); 
		cnt++; 
	} 
} 


void update(int x, int y) 
{ 

	auto it = mySet.lower_bound({ y, 0 }); 
	mySet.erase(it);
	mySet.insert({ x, cnt }); 
	cnt++; 
} 

int get(int k) 
{ 
	auto it = mySet.find_by_order(k - 1); 
	return (it->first); 
} 

void operations(int arr[], int n,int i,int x,int k) 
{ 
	    insert(n, arr); 
			int j = i - 1; 
			update(x, arr[j]); 
			arr[j] = x; 
			cout << get(k) <<" "; 
} 

// Driver code 
int main() 
{ 
  int n;
  cin>>n;
  int arr[n];
  for(int i = 0; i < n;++i)
    cin>>arr[i];
  
  int q,r;
  cin>>q>>r;
  

	 
  while(q--)
  {
    int i,k,x;
    cin>>i>>x>>k;
	  operations(arr, n,i,x,k); 
  }
	return 0; 
}
by

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
}