Print nodes at k distance from root

Here given code implementation process.
// C program for
// Print nodes at k distance from root
#include <stdio.h>
#include <stdlib.h>
// Tree Node
struct TreeNode
{
int data;
struct TreeNode *left;
struct TreeNode *right;
};
// Binary Tree
struct BinaryTree
{
struct TreeNode *root;
};
// Create new tree
struct BinaryTree *new_tree()
{
// Create dynamic node
struct BinaryTree *tree = (struct BinaryTree *) malloc(sizeof(struct BinaryTree));
if (tree != NULL)
{
tree->root = NULL;
}
else
{
printf("Memory Overflow to Create tree Tree\n");
}
//return new tree
return tree;
}
// This is creates and returns the new binary tree node
struct TreeNode *get_node(int data)
{
// Create dynamic node
struct TreeNode *new_node = (struct TreeNode *) malloc(sizeof(struct TreeNode));
if (new_node != NULL)
{
//Set data and pointer values
new_node->data = data;
new_node->left = NULL;
new_node->right = NULL;
}
else
{
//This is indicates, segmentation fault or memory overflow problem
printf("Memory Overflow\n");
}
//return new node
return new_node;
}
// Recursively display the nodes which are exist k distance from root
void printKthDistance(struct TreeNode *node, int k)
{
if (node == NULL)
{
return;
}
if (k == 0)
{
// print k distance node
printf(" %d", node->data);
}
else
{
// Visit left and right subtree
printKthDistance(node->left, k - 1);
printKthDistance(node->right, k - 1);
}
}
// Handles the request to print every k distance node from root
void rootToKDistance(struct TreeNode *node, int k)
{
if (node == NULL)
{
printf("Empty Binary Tree \n");
}
else if (k < 0)
{
printf("\n Invalid distance k : %d\n", k);
}
else
{
printf("\n Given k : %d\n", k);
// Print nodes at k distance
printKthDistance(node, k);
}
}
int main(int argc, char
const *argv[])
{
struct BinaryTree *tree = new_tree();
/*
4
/ \
-4 7
/ \ \
2 3 12
/ / \ /
1 10 8 5
/ / \
3 9 12
-----------------
Binary tree
*/
tree->root = get_node(4);
tree->root->left = get_node(-4);
tree->root->left->right = get_node(3);
tree->root->left->right->left = get_node(10);
tree->root->left->right->left->left = get_node(9);
tree->root->left->right->right = get_node(8);
tree->root->left->left = get_node(2);
tree->root->left->left->left = get_node(1);
tree->root->left->left->left->left = get_node(3);
tree->root->right = get_node(7);
tree->root->right->right = get_node(12);
tree->root->right->right->left = get_node(5);
tree->root->right->right->left->right = get_node(5);
// Test case
rootToKDistance(tree->root, 4);
rootToKDistance(tree->root, 2);
rootToKDistance(tree->root, 0);
return 0;
}
input
Given k : 4
3 9 5
Given k : 2
2 3 12
Given k : 0
4
/*
Java Program
Print nodes at k distance from root
*/
// Binary Tree node
class TreeNode
{
public int data;
public TreeNode left;
public TreeNode right;
public TreeNode(int data)
{
// Set node value
this.data = data;
this.left = null;
this.right = null;
}
}
public class BinaryTree
{
public TreeNode root;
public BinaryTree()
{
// Set initial tree root to null
this.root = null;
}
// Recursively display the nodes which are exist k distance from root
public void printKthDistance(TreeNode node, int k)
{
if (node == null)
{
return;
}
if (k == 0)
{
// print k distance node
System.out.print(" " + node.data);
}
else
{
// Visit left and right subtree
printKthDistance(node.left, k - 1);
printKthDistance(node.right, k - 1);
}
}
// Handles the request to print every k distance node from root
public void rootToKDistance(int k)
{
if (this.root == null)
{
System.out.print("Empty Binary Tree \n");
}
else if (k < 0)
{
System.out.println("\n Invalid distance k : " + k);
}
else
{
System.out.println("\n Given k : " + k);
// Print nodes at k distance
printKthDistance(this.root, k);
}
}
public static void main(String[] args)
{
// Create new binary trees
BinaryTree tree = new BinaryTree();
/*
4
/ \
-4 7
/ \ \
2 3 12
/ / \ /
1 10 8 5
/ / \
3 9 12
-----------------
Construct Binary Tree
*/
tree.root = new TreeNode(4);
tree.root.left = new TreeNode(-4);
tree.root.left.right = new TreeNode(3);
tree.root.left.right.left = new TreeNode(10);
tree.root.left.right.left.left = new TreeNode(9);
tree.root.left.right.right = new TreeNode(8);
tree.root.left.left = new TreeNode(2);
tree.root.left.left.left = new TreeNode(1);
tree.root.left.left.left.left = new TreeNode(3);
tree.root.right = new TreeNode(7);
tree.root.right.right = new TreeNode(12);
tree.root.right.right.left = new TreeNode(5);
tree.root.right.right.left.right = new TreeNode(5);
// Test cases
tree.rootToKDistance(4);
tree.rootToKDistance(2);
tree.rootToKDistance(0);
}
}
input
Given k : 4
3 9 5
Given k : 2
2 3 12
Given k : 0
4
// Include header file
#include <iostream>
using namespace std;
/*
C++ Program
Print nodes at k distance from root
*/
// Binary Tree node
class TreeNode
{
public: int data;
TreeNode *left;
TreeNode *right;
TreeNode(int data)
{
// Set node value
this->data = data;
this->left = NULL;
this->right = NULL;
}
};
class BinaryTree
{
public: TreeNode *root;
BinaryTree()
{
this->root = NULL;
}
// Recursively display the nodes which are exist k distance from root
void printKthDistance(TreeNode *node, int k)
{
if (node == NULL)
{
return;
}
if (k == 0)
{
// print k distance node
cout << " " << node->data;
}
else
{
// Visit left and right subtree
this->printKthDistance(node->left, k - 1);
this->printKthDistance(node->right, k - 1);
}
}
// Handles the request to print every k distance node from root
void rootToKDistance(int k)
{
if (this->root == NULL)
{
cout << "Empty Binary Tree \n";
}
else
{
if (k < 0)
{
cout << "\n Invalid distance k : " << k << endl;
}
else
{
cout << "\n Given k : " << k << endl;
// Print nodes at k distance
this->printKthDistance(this->root, k);
}
}
}
};
int main()
{
// Create new binary trees
BinaryTree *tree = new BinaryTree();
/*
4
/ \
-4 7
/ \ \
2 3 12
/ / \ /
1 10 8 5
/ / \
3 9 12
-----------------
Construct Binary Tree
*/
tree->root = new TreeNode(4);
tree->root->left = new TreeNode(-4);
tree->root->left->right = new TreeNode(3);
tree->root->left->right->left = new TreeNode(10);
tree->root->left->right->left->left = new TreeNode(9);
tree->root->left->right->right = new TreeNode(8);
tree->root->left->left = new TreeNode(2);
tree->root->left->left->left = new TreeNode(1);
tree->root->left->left->left->left = new TreeNode(3);
tree->root->right = new TreeNode(7);
tree->root->right->right = new TreeNode(12);
tree->root->right->right->left = new TreeNode(5);
tree->root->right->right->left->right = new TreeNode(5);
// Test cases
tree->rootToKDistance(4);
tree->rootToKDistance(2);
tree->rootToKDistance(0);
return 0;
}
input
Given k : 4
3 9 5
Given k : 2
2 3 12
Given k : 0
4
// Include namespace system
using System;
/*
Csharp Program
Print nodes at k distance from root
*/
// Binary Tree node
public class TreeNode
{
public int data;
public TreeNode left;
public TreeNode right;
public TreeNode(int data)
{
// Set node value
this.data = data;
this.left = null;
this.right = null;
}
}
public class BinaryTree
{
public TreeNode root;
public BinaryTree()
{
// Set initial tree root to null
this.root = null;
}
// Recursively display the nodes which are exist k distance from root
public void printKthDistance(TreeNode node, int k)
{
if (node == null)
{
return;
}
if (k == 0)
{
// print k distance node
Console.Write(" " + node.data);
}
else
{
// Visit left and right subtree
this.printKthDistance(node.left, k - 1);
this.printKthDistance(node.right, k - 1);
}
}
// Handles the request to print every k distance node from root
public void rootToKDistance(int k)
{
if (this.root == null)
{
Console.Write("Empty Binary Tree \n");
}
else
{
if (k < 0)
{
Console.WriteLine("\n Invalid distance k : " + k);
}
else
{
Console.WriteLine("\n Given k : " + k);
// Print nodes at k distance
this.printKthDistance(this.root, k);
}
}
}
public static void Main(String[] args)
{
// Create new binary trees
BinaryTree tree = new BinaryTree();
/*
4
/ \
-4 7
/ \ \
2 3 12
/ / \ /
1 10 8 5
/ / \
3 9 12
-----------------
Construct Binary Tree
*/
tree.root = new TreeNode(4);
tree.root.left = new TreeNode(-4);
tree.root.left.right = new TreeNode(3);
tree.root.left.right.left = new TreeNode(10);
tree.root.left.right.left.left = new TreeNode(9);
tree.root.left.right.right = new TreeNode(8);
tree.root.left.left = new TreeNode(2);
tree.root.left.left.left = new TreeNode(1);
tree.root.left.left.left.left = new TreeNode(3);
tree.root.right = new TreeNode(7);
tree.root.right.right = new TreeNode(12);
tree.root.right.right.left = new TreeNode(5);
tree.root.right.right.left.right = new TreeNode(5);
// Test cases
tree.rootToKDistance(4);
tree.rootToKDistance(2);
tree.rootToKDistance(0);
}
}
input
Given k : 4
3 9 5
Given k : 2
2 3 12
Given k : 0
4
<?php
/*
Php Program
Print nodes at k distance from root
*/
// Binary Tree node
class TreeNode
{
public $data;
public $left;
public $right;
public function __construct($data)
{
// Set node value
$this->data = $data;
$this->left = NULL;
$this->right = NULL;
}
}
class BinaryTree
{
public $root;
public function __construct()
{
$this->root = NULL;
}
// Recursively display the nodes which are exist k distance from root
public function printKthDistance($node, $k)
{
if ($node == NULL)
{
return;
}
if ($k == 0)
{
// print k distance node
echo(" ".$node->data);
}
else
{
// Visit left and right subtree
$this->printKthDistance($node->left, $k - 1);
$this->printKthDistance($node->right, $k - 1);
}
}
// Handles the request to print every k distance node from root
public function rootToKDistance($k)
{
if ($this->root == NULL)
{
echo("Empty Binary Tree \n");
}
else
{
if ($k < 0)
{
echo("\n Invalid distance k : ".$k.
"\n");
}
else
{
echo("\n Given k : ".$k.
"\n");
// Print nodes at k distance
$this->printKthDistance($this->root, $k);
}
}
}
}
function main()
{
// Create new binary trees
$tree = new BinaryTree();
/*
4
/ \
-4 7
/ \ \
2 3 12
/ / \ /
1 10 8 5
/ / \
3 9 12
-----------------
Construct Binary Tree
*/
$tree->root = new TreeNode(4);
$tree->root->left = new TreeNode(-4);
$tree->root->left->right = new TreeNode(3);
$tree->root->left->right->left = new TreeNode(10);
$tree->root->left->right->left->left = new TreeNode(9);
$tree->root->left->right->right = new TreeNode(8);
$tree->root->left->left = new TreeNode(2);
$tree->root->left->left->left = new TreeNode(1);
$tree->root->left->left->left->left = new TreeNode(3);
$tree->root->right = new TreeNode(7);
$tree->root->right->right = new TreeNode(12);
$tree->root->right->right->left = new TreeNode(5);
$tree->root->right->right->left->right = new TreeNode(5);
// Test cases
$tree->rootToKDistance(4);
$tree->rootToKDistance(2);
$tree->rootToKDistance(0);
}
main();
input
Given k : 4
3 9 5
Given k : 2
2 3 12
Given k : 0
4
/*
Node JS Program
Print nodes at k distance from root
*/
// Binary Tree node
class TreeNode
{
constructor(data)
{
// Set node value
this.data = data;
this.left = null;
this.right = null;
}
}
class BinaryTree
{
constructor()
{
this.root = null;
}
// Recursively display the nodes which are exist k distance from root
printKthDistance(node, k)
{
if (node == null)
{
return;
}
if (k == 0)
{
// print k distance node
process.stdout.write(" " + node.data);
}
else
{
// Visit left and right subtree
this.printKthDistance(node.left, k - 1);
this.printKthDistance(node.right, k - 1);
}
}
// Handles the request to print every k distance node from root
rootToKDistance(k)
{
if (this.root == null)
{
process.stdout.write("Empty Binary Tree \n");
}
else
{
if (k < 0)
{
console.log("\n Invalid distance k : " + k);
}
else
{
console.log("\n Given k : " + k);
// Print nodes at k distance
this.printKthDistance(this.root, k);
}
}
}
}
function main()
{
// Create new binary trees
var tree = new BinaryTree();
/*
4
/ \
-4 7
/ \ \
2 3 12
/ / \ /
1 10 8 5
/ / \
3 9 12
-----------------
Construct Binary Tree
*/
tree.root = new TreeNode(4);
tree.root.left = new TreeNode(-4);
tree.root.left.right = new TreeNode(3);
tree.root.left.right.left = new TreeNode(10);
tree.root.left.right.left.left = new TreeNode(9);
tree.root.left.right.right = new TreeNode(8);
tree.root.left.left = new TreeNode(2);
tree.root.left.left.left = new TreeNode(1);
tree.root.left.left.left.left = new TreeNode(3);
tree.root.right = new TreeNode(7);
tree.root.right.right = new TreeNode(12);
tree.root.right.right.left = new TreeNode(5);
tree.root.right.right.left.right = new TreeNode(5);
// Test cases
tree.rootToKDistance(4);
tree.rootToKDistance(2);
tree.rootToKDistance(0);
}
main();
input
Given k : 4
3 9 5
Given k : 2
2 3 12
Given k : 0
4
# Python 3 Program
# Print nodes at k distance from root
# Binary Tree node
class TreeNode :
def __init__(self, data) :
# Set node value
self.data = data
self.left = None
self.right = None
class BinaryTree :
def __init__(self) :
self.root = None
# Recursively display the nodes which are exist k distance from root
def printKthDistance(self, node, k) :
if (node == None) :
return
if (k == 0) :
# print k distance node
print(" ", node.data, end = "")
else :
# Visit left and right subtree
self.printKthDistance(node.left, k - 1)
self.printKthDistance(node.right, k - 1)
# Handles the request to print every k distance node from root
def rootToKDistance(self, k) :
if (self.root == None) :
print("Empty Binary Tree ")
else :
if (k < 0) :
print("\n Invalid distance k : ", k)
else :
print("\n Given k : ", k)
# Print nodes at k distance
self.printKthDistance(self.root, k)
def main() :
tree = BinaryTree()
# 4
# / \
# -4 7
# / \ \
# 2 3 12
# / / \ /
# 1 10 8 5
# / / \
# 3 9 12
# -----------------
# Construct Binary Tree
tree.root = TreeNode(4)
tree.root.left = TreeNode(-4)
tree.root.left.right = TreeNode(3)
tree.root.left.right.left = TreeNode(10)
tree.root.left.right.left.left = TreeNode(9)
tree.root.left.right.right = TreeNode(8)
tree.root.left.left = TreeNode(2)
tree.root.left.left.left = TreeNode(1)
tree.root.left.left.left.left = TreeNode(3)
tree.root.right = TreeNode(7)
tree.root.right.right = TreeNode(12)
tree.root.right.right.left = TreeNode(5)
tree.root.right.right.left.right = TreeNode(5)
# Test cases
tree.rootToKDistance(4)
tree.rootToKDistance(2)
tree.rootToKDistance(0)
if __name__ == "__main__": main()
input
Given k : 4
3 9 5
Given k : 2
2 3 12
Given k : 0
4
# Ruby Program
# Print nodes at k distance from root
# Binary Tree node
class TreeNode
# Define the accessor and reader of class TreeNode
attr_reader :data, :left, :right
attr_accessor :data, :left, :right
def initialize(data)
# Set node value
self.data = data
self.left = nil
self.right = nil
end
end
class BinaryTree
# Define the accessor and reader of class BinaryTree
attr_reader :root
attr_accessor :root
def initialize()
self.root = nil
end
# Recursively display the nodes which are exist k distance from root
def printKthDistance(node, k)
if (node == nil)
return
end
if (k == 0)
# print k distance node
print(" ", node.data)
else
# Visit left and right subtree
self.printKthDistance(node.left, k - 1)
self.printKthDistance(node.right, k - 1)
end
end
# Handles the request to print every k distance node from root
def rootToKDistance(k)
if (self.root == nil)
print("Empty Binary Tree \n")
else
if (k < 0)
print("\n Invalid distance k : ", k, "\n")
else
print("\n Given k : ", k, "\n")
# Print nodes at k distance
self.printKthDistance(self.root, k)
end
end
end
end
def main()
# Create new binary trees
tree = BinaryTree.new()
# 4
# / \
# -4 7
# / \ \
# 2 3 12
# / / \ /
# 1 10 8 5
# / / \
# 3 9 12
# -----------------
# Construct Binary Tree
tree.root = TreeNode.new(4)
tree.root.left = TreeNode.new(-4)
tree.root.left.right = TreeNode.new(3)
tree.root.left.right.left = TreeNode.new(10)
tree.root.left.right.left.left = TreeNode.new(9)
tree.root.left.right.right = TreeNode.new(8)
tree.root.left.left = TreeNode.new(2)
tree.root.left.left.left = TreeNode.new(1)
tree.root.left.left.left.left = TreeNode.new(3)
tree.root.right = TreeNode.new(7)
tree.root.right.right = TreeNode.new(12)
tree.root.right.right.left = TreeNode.new(5)
tree.root.right.right.left.right = TreeNode.new(5)
# Test cases
tree.rootToKDistance(4)
tree.rootToKDistance(2)
tree.rootToKDistance(0)
end
main()
input
Given k : 4
3 9 5
Given k : 2
2 3 12
Given k : 0
4
/*
Scala Program
Print nodes at k distance from root
*/
// Binary Tree node
class TreeNode(var data: Int , var left: TreeNode , var right: TreeNode)
{
def this(data: Int)
{
// Set node value
this(data, null, null);
}
}
class BinaryTree(var root: TreeNode)
{
def this()
{
this(null);
}
// Recursively display the nodes which are exist k distance from root
def printKthDistance(node: TreeNode, k: Int): Unit = {
if (node == null)
{
return;
}
if (k == 0)
{
// print k distance node
print(" " + node.data);
}
else
{
// Visit left and right subtree
printKthDistance(node.left, k - 1);
printKthDistance(node.right, k - 1);
}
}
// Handles the request to print every k distance node from root
def rootToKDistance(k: Int): Unit = {
if (this.root == null)
{
print("Empty Binary Tree \n");
}
else
{
if (k < 0)
{
println("\n Invalid distance k : " + k);
}
else
{
println("\n Given k : " + k);
// Print nodes at k distance
printKthDistance(this.root, k);
}
}
}
}
object Main
{
def main(args: Array[String]): Unit = {
// Create new binary trees
var tree: BinaryTree = new BinaryTree();
/*
4
/ \
-4 7
/ \ \
2 3 12
/ / \ /
1 10 8 5
/ / \
3 9 12
-----------------
Construct Binary Tree
*/
tree.root = new TreeNode(4);
tree.root.left = new TreeNode(-4);
tree.root.left.right = new TreeNode(3);
tree.root.left.right.left = new TreeNode(10);
tree.root.left.right.left.left = new TreeNode(9);
tree.root.left.right.right = new TreeNode(8);
tree.root.left.left = new TreeNode(2);
tree.root.left.left.left = new TreeNode(1);
tree.root.left.left.left.left = new TreeNode(3);
tree.root.right = new TreeNode(7);
tree.root.right.right = new TreeNode(12);
tree.root.right.right.left = new TreeNode(5);
tree.root.right.right.left.right = new TreeNode(5);
// Test cases
tree.rootToKDistance(4);
tree.rootToKDistance(2);
tree.rootToKDistance(0);
}
}
input
Given k : 4
3 9 5
Given k : 2
2 3 12
Given k : 0
4
/*
Swift 4 Program
Print nodes at k distance from root
*/
// Binary Tree node
class TreeNode
{
var data: Int;
var left: TreeNode? ;
var right: TreeNode? ;
init(_ data: Int)
{
// Set node value
self.data = data;
self.left = nil;
self.right = nil;
}
}
class BinaryTree
{
var root: TreeNode? ;
init()
{
self.root = nil;
}
// Recursively display the nodes which are exist k distance from root
func printKthDistance(_ node: TreeNode? , _ k : Int)
{
if (node == nil)
{
return;
}
if (k == 0)
{
// print k distance node
print(" ", node!.data, terminator: "");
}
else
{
// Visit left and right subtree
self.printKthDistance(node!.left, k - 1);
self.printKthDistance(node!.right, k - 1);
}
}
// Handles the request to print every k distance node from root
func rootToKDistance(_ k: Int)
{
if (self.root == nil)
{
print("Empty Binary Tree ");
}
else
{
if (k < 0)
{
print("\n Invalid distance k : ", k);
}
else
{
print("\n Given k : ", k);
// Print nodes at k distance
self.printKthDistance(self.root, k);
}
}
}
}
func main()
{
// Create new binary trees
let tree: BinaryTree = BinaryTree();
/*
4
/ \
-4 7
/ \ \
2 3 12
/ / \ /
1 10 8 5
/ / \
3 9 12
-----------------
Construct Binary Tree
*/
tree.root = TreeNode(4);
tree.root!.left = TreeNode(-4);
tree.root!.left!.right = TreeNode(3);
tree.root!.left!.right!.left = TreeNode(10);
tree.root!.left!.right!.left!.left = TreeNode(9);
tree.root!.left!.right!.right = TreeNode(8);
tree.root!.left!.left = TreeNode(2);
tree.root!.left!.left!.left = TreeNode(1);
tree.root!.left!.left!.left!.left = TreeNode(3);
tree.root!.right = TreeNode(7);
tree.root!.right!.right = TreeNode(12);
tree.root!.right!.right!.left = TreeNode(5);
tree.root!.right!.right!.left!.right = TreeNode(5);
// Test cases
tree.rootToKDistance(4);
tree.rootToKDistance(2);
tree.rootToKDistance(0);
}
main();
input
Given k : 4
3 9 5
Given k : 2
2 3 12
Given k : 0
4
/*
Kotlin Program
Print nodes at k distance from root
*/
// Binary Tree node
class TreeNode
{
var data: Int;
var left: TreeNode ? ;
var right: TreeNode ? ;
constructor(data: Int)
{
// Set node value
this.data = data;
this.left = null;
this.right = null;
}
}
class BinaryTree
{
var root: TreeNode ? ;
constructor()
{
this.root = null;
}
// Recursively display the nodes which are exist k distance from root
fun printKthDistance(node: TreeNode ? , k : Int): Unit
{
if (node == null)
{
return;
}
if (k == 0)
{
// print k distance node
print(" " + node.data);
}
else
{
// Visit left and right subtree
this.printKthDistance(node.left, k - 1);
this.printKthDistance(node.right, k - 1);
}
}
// Handles the request to print every k distance node from root
fun rootToKDistance(k: Int): Unit
{
if (this.root == null)
{
print("Empty Binary Tree \n");
}
else
{
if (k < 0)
{
println("\n Invalid distance k : " + k);
}
else
{
println("\n Given k : " + k);
// Print nodes at k distance
this.printKthDistance(this.root, k);
}
}
}
}
fun main(args: Array < String > ): Unit
{
// Create new binary trees
val tree: BinaryTree = BinaryTree();
/*
4
/ \
-4 7
/ \ \
2 3 12
/ / \ /
1 10 8 5
/ / \
3 9 12
-----------------
Construct Binary Tree
*/
tree.root = TreeNode(4);
tree.root?.left = TreeNode(-4);
tree.root?.left?.right = TreeNode(3);
tree.root?.left?.right?.left = TreeNode(10);
tree.root?.left?.right?.left?.left = TreeNode(9);
tree.root?.left?.right?.right = TreeNode(8);
tree.root?.left?.left = TreeNode(2);
tree.root?.left?.left?.left = TreeNode(1);
tree.root?.left?.left?.left?.left = TreeNode(3);
tree.root?.right = TreeNode(7);
tree.root?.right?.right = TreeNode(12);
tree.root?.right?.right?.left = TreeNode(5);
tree.root?.right?.right?.left?.right = TreeNode(5);
// Test cases
tree.rootToKDistance(4);
tree.rootToKDistance(2);
tree.rootToKDistance(0);
}
input
Given k : 4
3 9 5
Given k : 2
2 3 12
Given k : 0
4
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