## Question 1
What’s the correct output for the following inputs?

`n` $=5$ 

`corridors` $= [[1,2], [3,2], [4,1], 
 [2,4], [5,1], [5,4]]$

### Options

1. 2
Correct
$1 \to 2 \to 4 \to 1, 1 \to 4 \to5 \to 1$
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2. 3
Incorrect

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3. 0
Incorrect

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4. 4
Incorrect

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## Question 2
What’s the correct output for the following inputs?

`n` $=3$ 

`corridors` $= [[1,2], [2,3]]$
### Options

1. 1
Incorrect

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2. 0
Correct

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3. 3
Incorrect

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4. 2
Incorrect

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## Question 3
What’s the correct output for the following inputs?

`n` $=6$ 

`corridors` $= [[1,2], [3,4], [5,6]$
### Options

1. 0
Correct

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2. 1
Incorrect

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3. 3
Incorrect

----------------------------

4. 2
Incorrect

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