### Lecture 1: Problem Solving 101

### Entry Phase

It's important to recognize that the entry phase is a vital part of problem solving and should not be overlooked

- What do I know?

**Reading the question**, Past experience
- What do i Want?

Write the problem in your own words - 목표를 이해하는데 도움을 준다.

Watch out for possible ambiguities - 언어적인 애매함을 주의해라.
- What can I Introduce?

Make a diagram

Write in mathematical notation

### Attack Phase

- Brute Force

ex) theorem
- Clever Strategy

### Review Phase

- Check : Make sure your solution actually works.
- Reflect : What were the big realizations?
- Extend : Can we make a formula for n steps?

Patterns can be misleading!

More important than noticing a pattern is understanding why it works.

### Reference