/*------------------------------------------------------------------------------
 * problem020.c: Steps (6.6.8)
**----------------------------------------------------------------------------*/

/* Copyright (c) 2009 Peter Bui. All Rights Reserved.
 *
 * Peter Bui <pbui@cse.nd.edu>
 *
**------------------------------------------------------------------------------
 * Includes
**----------------------------------------------------------------------------*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

/*------------------------------------------------------------------------------
 * Functions
**----------------------------------------------------------------------------*/

static int
compute_steps(int x, int y)
{
    int d, s, c;

    d = y - x;
    s = 0;
    c = 0;

    while (1) {
	if ((y - x) <= 0)
	    break;

	if (abs(y - x - c) <= 1) {
	    s += 1;
	    break;
	}

	c += 1;
	x += c;
	y -= c;
	s += 2;
    }

    return (s);
}

/*------------------------------------------------------------------------------
 * Main Execution
**----------------------------------------------------------------------------*/

int
main(int argc, char* argv[]) 
{
    int x, y;

    while (scanf("%d %d", &x, &y) != EOF) 
	printf("%d\n", compute_steps(x, y));

    return (EXIT_SUCCESS);
}

/*------------------------------------------------------------------------------
 * vim: sts=4 sw=4 ts=8 ft=c
**----------------------------------------------------------------------------*/