HoneyComb

import java.util.Scanner;

public class HoneyComb {

	public static void main(String []argv) throws Exception {
		HoneyComb hc = new HoneyComb();
		hc.enter();
	}

	public void enter() {
		Scanner scanner = new Scanner(System.in);
		final long A = scanner.nextLong();
		final long B = scanner.nextLong();

		Coord a = toCoord(A);
		Coord b = toCoord(B);

		System.out.println(dist(a, b));
	}

    // number of accumulate elements till x-th wrap
	private long accu(long x) {
		return 1 + 3 * (x + 1) * x;
	}

	private long initX(long N) {
		long x = 0;
		while (accu(x + 1) < N) {
			x++;
		}
		return x;
	}

	// (x, y) movement in six different area
	final int []xMove = {-1, -1, 0, 1, 1, 0};
	final int []yMove = {-1, 0, 1, 1, 0, -1};

	private Coord toCoord(long N) {
		if (N == 1) {
			return new Coord(0, 0);
		} else {
			long x = initX(N);
			long y = 0;

			long left = N - accu(x);
			if (left == 0) {
				return new Coord(x, y);
			}

			// move around hex
			x++;
			final long step = x;
			int area = 0;

			while (left > 0) {
				if (left <= step) {
					x += left * xMove[area];
					y += left * yMove[area];
					break;
				} else {
					left -= step;
					x += step * xMove[area];
					y += step * yMove[area];
					area++;
				}
			}
			return new Coord(x, y);
		}
	}

	private long dist(Coord a, Coord b) {
		// move along (1, 0), (0, 1), (1, 1) axis
		// dist 1 is moving along (1, 0) and (0, 1)
		final long d1 = Math.abs(a.x - b.x) + Math.abs(a.y - b.y);

		// dist 2 is moving along (1, 1) and (1, 0)
		// first move a.y to b.y along (1, 1), calculate new x
		long dir = b.y - a.y;
		long tx = a.x + dir;
		// then move a.x to b.x along (1, 0)
		final long d2 = Math.abs(dir) + Math.abs(tx - b.x);

		// dist 3 is moving along (1, 1) and (0, 1)
		// first move a.x to b.x along (1, 1), calculate new y
		dir = b.x - a.x;
		long ty = a.y + dir;
		// then move a.y to b.y along (0, 1)
		final long d3 = Math.abs(dir) + Math.abs(ty - b.y);

		return Math.min(Math.min(d1, d2), d3);
	}
}

class Coord {
	long x;
	long y;
	public Coord(long x, long y) {
		this.x = x;
		this.y = y;
	}
}