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Разделы > Linear Data Structures: Arrays > задача:


51021 - Number of Nodes

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Лимит времени 2000/4000/4000/4000 мс. Лимит памяти 65000/65000/65000/65000 Кб.
Question by Ibrahim Mesecan.

Number of Nodes

Question: Write a program that reads a BST, a node and a direction (Right or Left). Then, the program calculates number of nodes on the given direction of the given node.

Input specification: You will be two integers and a direction in the beginning,

  • number of nodes (n) to be added to the BST,
  • node to be searched in BST
  • the direction: a string which can be only "Right" or "Left"
Each of the following n-lines will have one integer where 0 ≤ n ≤ 40,000 and the numbers are between -5e6 and 5e6. Note: Assume that the BST is initially empty.

Output specification: If the searching number is in the BST, show the number of nodes in the given direction, show zero otherwise.

Sample Input I
7 14 Right
14
10
16
14
19
18
16
 		Sample Input II
10 18 Left
10
20
18
14
18
12
15
16
12
17
Sample Output I
3
Sample Output II
5



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