题解 | #配置文件恢复#

import sys

cmds={
    'reset':'reset what',
    'reset board': 'board fault',
    'board add': 'where to add',
    'board delete':'no board at all',
    'reboot backplane': 'impossible',
    'backplane abort': 'install first',
    'he he': 'unknown command',
}

for line in sys.stdin:
    data=line.strip().split()

    if len(data)==1:
        if 'reset'.startswith(data[0]):
            print(cmds['reset'])
        else:
            print('unknown command-')

    if len(data)==2:
        match_nums=0
        key_index=None
        for k in cmds.keys():
            if k=='reset': continue
            cmd1, cmd2=k.split()
            if cmd1.startswith(data[0]) and cmd2.startswith(data[1]):
                match_nums+=1
                key_index=k
        if match_nums==1:
            print(cmds[key_index])
        else:
            print('unknown command+')