def streamrac2():
    a,b,c,d=0,1,1,2
    while True:
        y=b//d
        if y==(a+b)//(c+d):
            print(y)
            a=10*(a-c*y)
            b=10*(b-d*y)
        else:
            a,b=b,a+2*b
            c,d=d,c+2*d