立个flag来表示这个数是否被删除
如:int flag[100005]然后if(flag[x]==0)
{
sc(x);
}
by 孟令然2013 @ 2023-11-16 19:39:31
还有flag[x]=1;
by 孟令然2013 @ 2023-11-16 19:40:31
谢谢!
by Guagua111 @ 2023-11-17 10:11:34