a=input()
gx,gy=a.split(" ")
gx=int(gx)
gy=int(gy)
def run(gx,gy):
    if gx==0 or gy==0:
        return 1
    if gx==gy or gx==-gy:
        return 1
    else:
        return 2

print(run(gx,gy))