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Problems

Minimum and Maximum in a tree

Minimum and Maximum in a tree

Given an array of integers. Create a Binary Search Tree from these numbers. If the inserted value equals to the current node, insert it to the right subtree.

Write methods Min and Max that finds a minimum and a maximum element in a tree.

prb7463.gif

Write the code according to the next interface:

class TreeNode

{

public:

int val;

TreeNode *left;

TreeNode *right;

TreeNode(int x) : val(x), left(NULL), right(NULL) {}

};

class Tree

{

public:

TreeNode *head;

Tree() : head(NULL) {};

void Insert(int val); // Insert number val to Binary Search Tree

int Min(void); // Return minimum in a tree

int Max(void); // Return maximum in a tree

};

You can create (use) additional methods if needed.

Input

The first line contains number n (1n100). The second line contains n integers.

Output

Create the Binary Search Tree from input data. Print in one line the Minimum and the Maximum element in a tree.

Time limit 1 second
Memory limit 122.17 MiB
Input example #1
6
14 9 1 14 20 13
Output example #1
1 20
Author Mykhailo Medvediev
Source C++