Consider the following problem: for an array **a** no reduction of **n** elements, and an integer **b** is chosen arbitrarily, **find the minimum value of**

**Solution:**

**Step1:** Prove that b we need to find is equal to the value of a certain element in array a.

**Detail:**

**Step 1:**

**Easy to see:**

So we have proved that b is a certain element in array a.

**Step 2:**

Now that we know b is an element in array a, we temporarily set that element to .

**So we have found b satisfying and proved successful.**

This is my first time posting, I hope to receive suggestions from all of you. Thanks for reading my post.

Thanks for your good tutorial!!!!