We will hold AtCoder Beginner Contest 336. Contest URL: https://atcoder.jp/contests/abc336 Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20240114T2100&p1=248 Duration: 100 minutes Writer: Nyaan, math957963 Tester: nok0, yuto1115 Rated range: ~ 1999 The point ...
We will hold キーエンスプログラミングコンテスト2022(AtCoder Beginner Contest 274). Contest URL: https://atcoder.jp/contests/abc274 Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20221022T2100&p1=248 Duration: 100 minutes Number of Tasks: 8 Writer: Nyaan, kyo...
可以用双向链表进行模拟。 classListNode:__slots__={'val','pre','nxt'}def__init__(self)->None:self.val=-1self.pre=Noneself.nxt=Nonedefsolve():n=II()mp=defaultdict(ListNode)head=ListNode()cur=headfor_inrange(n):line=LI()op=line[0]ifop=='ADD':new=ListNode()new.val=int(line[1]...