import math
def main():
    xy = list(map(int, input().split()))
    x = xy[0]
    y = xy[1]

    a1 = math.sqrt(x ** 2 + y ** 2)
    a2 = math.ceil(a1)
    a3 = a2 - a1
    a4 = a2 * 2

    if a3 == 0.0:
        print(a4 + 1)
    else:
        print(a4)

if __name__ == "__main__":
    main()