I need someone to approve this idea!

Sometimes, even the creator, which is me in this case, can't solve one's own problems. So I will post my problems here, we will discuss the answers to the problem. And when the answer is revealed, I will quickly delete this discussion and post the problem for everyone to solve.

"But doesn't that everyone know the answer when the problem is posted? Even the explanations are understood by everyone."

"Well, I haven't thought of that. At least, you gain those things from the discussion."

The problem for this time is:

We have assemblies every Monday at the schoolyard. And it is boring, but because there mustn't be anything from the principle that is left out so I have to pay attention to every word she says. I usually look down to the ground. There are tiles laid down the ground. I imagine there is a city, a miniature one, with the population filled with ants. (I kill them at the end anyway. I have a lot of regrets after doing that.) The tile looks like the figure below.

What is the minimum amount of 90-degree turns that have to be made for one to go through all of the roadways in the map above?

Note by Thành Đạt Lê
1 month, 2 weeks ago

No vote yet
1 vote

  Easy Math Editor

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold

- bulleted
- list

  • bulleted
  • list

1. numbered
2. list

  1. numbered
  2. list
Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1

paragraph 2

paragraph 1

paragraph 2

[example link](https://brilliant.org)example link
> This is a quote
This is a quote
    # I indented these lines
    # 4 spaces, and now they show
    # up as a code block.

    print "hello world"
# I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
MathAppears as
Remember to wrap math in \( ... \) or \[ ... \] to ensure proper formatting.
2 \times 3 \( 2 \times 3 \)
2^{34} \( 2^{34} \)
a_{i-1} \( a_{i-1} \)
\frac{2}{3} \( \frac{2}{3} \)
\sqrt{2} \( \sqrt{2} \)
\sum_{i=1}^3 \( \sum_{i=1}^3 \)
\sin \theta \( \sin \theta \)
\boxed{123} \( \boxed{123} \)


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