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 Java (OpenJDK 11.0.6) (judge verdict: Accepted)

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Scanner;
import java.util.Stack;

public class Main {
	
	public static int[] next(int[] prev) {
		int[] curr = new int[prev.length];
		for(int i = 0; i < prev.length; i++) {
			int x = prev[i];
			int l = Math.max(0, i - x), r = Math.min(prev.length - 1, i + x);
			curr[l]++;
			if(r + 1 < prev.length) {
				curr[r + 1]--;
			}
		}
		for(int i = 1; i < curr.length; i++) {
			curr[i] += curr[i - 1];
		}
		return curr;
	}
	
    public static void main(String[] args) throws IOException {
    	BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
    	String[] input = reader.readLine().split(" ");
    	int n = Integer.parseInt(input[0]), k = Integer.parseInt(input[1]);
    	int[] arr = new int[n];
    	input = reader.readLine().split(" ");
    	for(int i = 0; i < n; i++) {
    		arr[i] = Integer.parseInt(input[i]);
    	}
    	while(k-->0) {
    		arr = next(arr);
    		if(arr[0] == n) {
    			break;
    		}
    	}
    	StringBuffer strbf = new StringBuffer();
    	for(int i = 0; i < n; i++) {
    		strbf.append(arr[i] + " ");
    	}
//    	System.out.println(k);
    	System.out.println(strbf.toString());
    }
}