import math
X = input().split()
Xp = abs(int(X[0]))
Yp = abs(int(X[1]))
if Xp == Yp == 0:
    print(1)
elif Xp == 0:
    ans = Yp * 2 + 1
    print(ans)
elif Yp == 0:
    ans = Xp * 2 + 1
    print(ans)
else:
    length = math.sqrt(Xp ** 2 + Yp ** 2)
    ans = length * 2 + 1
    print(int(ans))