HackerrankPsAlgorithms0036.java

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;

class HackerrankPsAlgorithms0036 {

	// Jumping on the Clouds: Revisited
	// https://www.hackerrank.com/challenges/jumping-on-the-clouds-revisited/problem?isFullScreen=true

	// --- You need to fill this method ---
	static int jumpingOnClouds(int[] c, int k) {
		int energy = 100;
		int i = 0;
		do {
			i = (i + k) % c.length;
			energy -= (c[i] * 2) + 1;
		} while (i != 0);
		return energy;
	}

	private static final Scanner scanner = new Scanner(System.in);

	public static void main(String[] args) throws IOException {
		BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

		String[] nk = scanner.nextLine().split(" ");

		int n = Integer.parseInt(nk[0]);

		int k = Integer.parseInt(nk[1]);

		int[] c = new int[n];

		String[] cItems = scanner.nextLine().split(" ");
		scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

		for (int i = 0; i < n; i++) {
			int cItem = Integer.parseInt(cItems[i]);
			c[i] = cItem;
		}

		int result = jumpingOnClouds(c, k);

		bufferedWriter.write(String.valueOf(result));
		bufferedWriter.newLine();

		bufferedWriter.close();

		scanner.close();
	}

}