## Question 1
What is the correct output for the following input values?

$$grid = 
   \begin{matrix}
       [1, 1, 0, 1] \\
       [0, 1, 1, 1] \\
       [1, 0, 0, 1] \\
       [1, 1, 1, 1]
   \end{matrix}

,\space sr = 1,\space sc = 3,\space target = 3
$$
### Options

1. $$
   \begin{matrix}
       [2, 2, 0, 2] \\
       [0, 2, 2, 2] \\
       [2, 0, 0, 2] \\
       [2, 2, 2, 2]
   \end{matrix}
$$
Incorrect

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

2. $$
   \begin{matrix}
       [3, 3, 0, 3] \\
       [0, 3, 3, 3] \\
       [3, 0, 0, 3] \\
       [3, 3, 3, 3]
   \end{matrix}
$$
Correct
Each cell of the grid will be affected since they’re connected adjacently to each other and have the same value as the starting cell.
----------------------------

3. $$
   \begin{matrix}
       [1, 1, 0, 3] \\
       [0, 0, 3, 3] \\
       [3, 0, 0, 3] \\
       [3, 3, 3, 3]
   \end{matrix}
$$
Incorrect

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

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## Question 2
What is the correct output for the following input values?

$$grid = 
   \begin{matrix}
       [1, 0, 2] \\
       [0, 2, 1] \\
       [2, 0, 1] \\
       [1, 2, 1]
   \end{matrix}

,\space sr = 1,\space sc = 2,\space target = 3
$$
### Options

1. $$
   \begin{matrix}
       [1, 0, 2] \\
       [0, 2, 3] \\
       [1, 0, 3] \\
       [1, 2, 3]
   \end{matrix}
$$
Incorrect

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

2. $$
   \begin{matrix}
       [1, 0, 2] \\
       [0, 2, 3] \\
       [2, 0, 1] \\
       [1, 2, 3]
   \end{matrix}
$$
Incorrect

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

3. $$
   \begin{matrix}
       [1, 0, 2] \\
       [0, 2, 3] \\
       [2, 0, 3] \\
       [1, 2, 3]
   \end{matrix}
$$
Correct
The given coordinates $[1, 2]$ point at cell value $1$ of the original grid. The $1$s in the last column are the only ones affected since all three are connected adjacently, and no other cell has the same initial value.
----------------------------

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## Question 3
What is the correct output for the following input values?

$$grid = 
   \begin{matrix}
       [5, 2, 4] \\
       [4, 4, 7] \\
       [3, 4, 6]
   \end{matrix}

,\space sr = 2,\space sc = 2,\space target = 0
$$
### Options

1. $$
   \begin{matrix}
       [5, 2, 4] \\
       [4, 4, 7] \\
       [3, 4, 0]
   \end{matrix}
$$
Correct
There are no other cells that match the same starting value as $6$, so only $1$ cell will be affected.
----------------------------

2. $$
   \begin{matrix}
       [5, 2, 0] \\
       [0, 0, 6] \\
       [3, 0, 6]
   \end{matrix}
$$
Incorrect

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

3. $$
   \begin{matrix}
       [5, 2, 4] \\
       [4, 4, 7] \\
       [3, 4, 6]
   \end{matrix}
$$
Incorrect

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

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