while True:
    try:
        a = 1
        b = 0
        c = input('请输入一个数字：')
        c = eval(c)
        d=c**0.5
        a0=int(d)
        a1=a0
        r=d
        r=1/(r-a1)
        a1=int(r)
        s=2
        print(a0,a1)
        while int(1/(r-a1))!=2*a0 :
            s+=1
            r=1/(r-a1)
            a1=int(r)
            print(a1, end=',')
        print("循环长度",s)
    except:exit()