chengxiao

type Data struct {
	Id string `json:"id"`
	Name string `json:"name"`
	PId string `json:"p_id"`
	Child []*Data `json:"child"`
}

type SliceData []*Data

func (s SliceData) Len() int {

chengxiao

# today my lucky number
from random  import choice

a =raw_input("Please enter /roll + number :")

def roll(c):
    y = choice(range(c))
    return  y

if a.startswith("/roll") :