You are an expert competitive programmer. You will be given a problem statement, test case constraints and example test inputs and outputs. Please reason step by step about the solution (that must respect memory and time limits), then provide a complete implementation in python3.

Your solution must read input from standard input (cin), write output to standard output (cout).
Do not include any debug prints or additional output.

Put your final solution within a single code block:
```python
<your code here>
```

Execution time limit: 1.0 seconds
Memory limit: 256.0 MB

# Problem
This is the hard version of the problem. The difference between versions is the constraints on $$$n$$$ and $$$a_i$$$. You can make hacks only if all versions of the problem are solved.

First, Aoi came up with the following idea for the competitive programming problem:

Yuzu is a girl who collecting candies. Originally, she has $$$x$$$ candies. There are also $$$n$$$ enemies numbered with integers from $$$1$$$ to $$$n$$$. Enemy $$$i$$$ has $$$a_i$$$ candies.

Yuzu is going to determine a permutation $$$P$$$. A permutation is an array consisting of $$$n$$$ distinct integers from $$$1$$$ to $$$n$$$ in arbitrary order. For example, $$$\{2,3,1,5,4\}$$$ is a permutation, but $$$\{1,2,2\}$$$ is not a permutation ($$$2$$$ appears twice in the array) and $$$\{1,3,4\}$$$ is also not a permutation (because $$$n=3$$$ but there is the number $$$4$$$ in the array).

After that, she will do $$$n$$$ duels with the enemies with the following rules:

- If Yuzu has equal or more number of candies than enemy $$$P_i$$$, she wins the duel and gets $$$1$$$ candy. Otherwise, she loses the duel and gets nothing.
- The candy which Yuzu gets will be used in the next duels.

Yuzu wants to win all duels. How many valid permutations $$$P$$$ exist?

This problem was easy and wasn't interesting for Akari, who is a friend of Aoi. And Akari made the following problem from the above idea:

Let's define $$$f(x)$$$ as the number of valid permutations for the integer $$$x$$$.

You are given $$$n$$$, $$$a$$$ and a prime number $$$p \le n$$$. Let's call a positive integer $$$x$$$ good, if the value $$$f(x)$$$ is not divisible by $$$p$$$. Find all good integers $$$x$$$.

Your task is to solve this problem made by Akari.

## Input Format
The first line contains two integers $$$n$$$, $$$p$$$ $$$(2 \le p \le n \le 10^5)$$$. It is guaranteed, that the number $$$p$$$ is prime (it has exactly two divisors $$$1$$$ and $$$p$$$).

The second line contains $$$n$$$ integers $$$a_1, a_2, \ldots, a_n$$$ $$$(1 \le a_i \le 10^9)$$$.

## Output Format
In the first line, print the number of good integers $$$x$$$.

In the second line, output all good integers $$$x$$$ in the ascending order.

It is guaranteed that the number of good integers $$$x$$$ does not exceed $$$10^5$$$.

## Examples
```input
3 2
3 4 5
```
```output
1
3
```
-----
```input
4 3
2 3 5 6
```
```output
2
3 4
```
-----
```input
4 3
9 1 1 1
```
```output
0
```
-----
```input
3 2
1000000000 1 999999999
```
```output
1
999999998
```

## Note
In the first test, $$$p=2$$$.

- If $$$x \le 2$$$, there are no valid permutations for Yuzu. So $$$f(x)=0$$$ for all $$$x \le 2$$$. The number $$$0$$$ is divisible by $$$2$$$, so all integers $$$x \leq 2$$$ are not good.
- If $$$x = 3$$$, $$$\{1,2,3\}$$$ is the only valid permutation for Yuzu. So $$$f(3)=1$$$, so the number $$$3$$$ is good.
- If $$$x = 4$$$, $$$\{1,2,3\} , \{1,3,2\} , \{2,1,3\} , \{2,3,1\}$$$ are all valid permutations for Yuzu. So $$$f(4)=4$$$, so the number $$$4$$$ is not good.
- If $$$x \ge 5$$$, all $$$6$$$ permutations are valid for Yuzu. So $$$f(x)=6$$$ for all $$$x \ge 5$$$, so all integers $$$x \ge 5$$$ are not good.

So, the only good number is $$$3$$$.

In the third test, for all positive integers $$$x$$$ the value $$$f(x)$$$ is divisible by $$$p = 3$$$.

Now solve the problem and return the code.