Problem:
Score : 500 points

Problem Statement

We have N bulbs arranged on a number line, numbered 1 to N from left to right.
Bulb i is at coordinate i.

Each bulb has a non-negative integer parameter called intensity.
When there is a bulb of intensity d at coordinate x, the bulb illuminates the segment from coordinate x-d-0.5 to x+d+0.5.
Initially, the intensity of Bulb i is A_i. We will now do the following operation K times in a row:

For each integer i between 1 and N (inclusive), let B_i be the number of bulbs illuminating coordinate i. Then, change the intensity of each bulb i to B_i.

Find the intensity of each bulb after the K operations.

Constraints

1 \leq N \leq 2 \times 10^5

1 \leq K \leq 2 \times 10^5

0 \leq A_i \leq N

Input

Input is given from Standard Input in the following format:

N K
A_1 A_2 \ldots A_N

Output

Print the intensity A{'}_i of each bulb i after the K operations to Standard Output in the following format:

A{'}_1 A{'}_2 \ldots A{'}_N

Sample Input 1

5 1
1 0 0 1 0

Sample Output 1

1 2 2 1 2

Initially, only Bulb 1 illuminates coordinate 1, so the intensity of Bulb 1 becomes 1 after the operation.
Similarly, the bulbs initially illuminating coordinate 2 are Bulb 1 and 2, so the intensity of Bulb 2 becomes 2.

Sample Input 2

5 2
1 0 0 1 0

Sample Output 2

3 3 4 4 3

Solution in Ruby (2.7.1) (judge verdict: Accepted)

N, K = gets.split.map(&:to_i)
a = gets.split.map(&:to_i)

if K > 40
    puts ([N]*N).join(' ')
    exit
end

[K, 40].min.times do |k|
    imosu = [0] * (N+1)
    0.upto(N-1) do |i|
        l = [i - a[i], 0].max
        r = [i + a[i] + 1, N].min
        # l = i - a[i]
        # l = 0 if l < 0
        # r = i + a[i] + 1
        # r = N if r > N
        imosu[l] += 1
        imosu[r] += -1
    end
    s = 0
    # all_n = true
    0.upto(N-1) do |i|
        s += imosu[i]
        a[i] = s
        # all_n = false if a[i] != N
    end
    # break if all_n
end

puts a.join(' ')