def cal_recom_result(sim_info,user_click):
    '''
    recom by itemcf
    Args:
        sim_info:item sim dict
        user_click:user click dict
    Return:
        dict,key:userid value dict,value_key itemid,value_value recom_score
    '''
    recent_click_num=3
    topk=5
    recom_info={}
    for user in user_click:
        click_list=user_click[user]
        recom_info.setdefault(user,{})
        for itemid in click_list[:recent_click_num]:
            if itemid not in sim_info:
                continue
            for itemsimzuhe in sim_info[itemid][:topk]:
                itemsimid=itemsimzuhe[0]
                itemsimscore=itemsimzuhe[1]
               
    return recom_info