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Given a Binary Tree of size **N** and an integer **K**. Print all nodes that are at distance k from root (root is considered at distance 0 from itself). Nodes should be printed from left to right. If k is more that height of tree, nothing should be printed.

For example, if below is given tree and k is 2. Output should be 4 5 6.

1

/ \

2 3

/ / \

4 5 6

\

8

**Example 1:**

**Input:
**K = 0
1
/ \
3 2**
Output: **1**
**

**Example 2:**

**Input:
**K = 3
3
/
2
\
1
/ \
5 3**
Output: **5 3

**Your Task:**

You don't have to take input. Complete the function **Kdistance() **that accepts **root** node** **and **k **as parameter and **return **the **value **of the **nodes **that are at a distance k from the root. (The values are returned as vector<int> in **cpp, **as ArrayList<Integer> in **java **and list in python)

**Expected Time Complexity: **O(N).

**Expected Auxiliary Space: **O(Height of the Tree).

**Constraints:**

1 <= N <= 10^{4}

0 <= K <= 30

**Note:** The **Input/Ouput** format and **Example **is given are used for the system's internal purpose, and should be used by a user for **Expected Output** only. As it is a function problem, hence a user should not read any input from the stdin/console. The task is to complete the function specified, and not to write the full code.

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K distance from root

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