#!/usr/bin/env python
#coding:utf-8

import os, sys

def check_lost(path):
    psd_ids = []
    max_id = 0
    for root, dirs, files in os.walk(path):
        for name in files:
            psd_id = name.split("_")[0]
            psd_ids.append(psd_id)
            max_id = max(max_id, int(psd_id))
    
    for i in range(1, max_id + 1):
        if str(i) not in psd_ids:
            print("缺失: " + str(i))

if __name__ == '__main__':
    check_lost(sys.argv[1])