你输出```cout<<"la:"<<lasta<<endl```干嘛？ by vvrr @ 2023-08-10 18:45:23
@[DHSMFCZ](/user/783060) 交的时候没删完，已AC，谢谢！！！！！！已关 by ZHANGGUIZHI @ 2023-08-10 18:48:31