GX, GY = map(int, input().split())

ans = 1<<60
if GX == 0 and GY == 0:
    ans = 0
elif GX == 0 or GY == 0:
    ans = 1
else:
    ans = 2
if GX == GY or -GX == GY:
    ans = min(ans, 1)

print(ans)