def Guess(a,b):
    a=0
    b=0
    cnt=0
    while True:
        yield a+cnt*b
        if(b==0 and a<=0):
            b=-a+1
            a=0
        elif(b==0 and a>0):
            a=-a
        elif(b>0):
            b=-b
        elif(b<0 and a>0):
            a=-a
            b=-b
        elif(b<0 and a<=0):
            a=-a+1
            b=-b-1
        cnt = cnt+1