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 Rust (1.42.0) (judge verdict: Accepted)

use proconio::input;
use std::cmp::{max, min};

fn main() {
    input! {
        n: usize,
        k: usize,
        a: [usize; n],
    }

    if k >= n - 1 {
        println!("{}", a.iter()
            .map(|_| n.to_string())
            .collect::<Vec<_>>()
            .join(" ")
        );
        return;
    }

    let mut b = a;
    for _ in 0..k {
        let mut s = vec![0isize; n + 1];
        for i in 0..n {
            s[max(b[i], i) - b[i]] += 1;
            s[min(n, i + b[i] + 1)] -= 1;
        }
        b = vec![0; n];
        let mut t = 0;
        let mut f = true;
        for i in 0..n {
            t += s[i];
            b[i] = t as usize;
            if b[i] < n {
                f = false;
            }
        }
        if f {
            break;
        }
    }

    let b = b.iter()
        .map(|bi| bi.to_string())
        .collect::<Vec<_>>()
        .join(" ");
    println!("{}", b);
}