結果
問題 | No.1718 Random Squirrel |
ユーザー |
|
提出日時 | 2024-06-27 17:33:39 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 647 ms / 2,000 ms |
コード長 | 5,662 bytes |
コンパイル時間 | 162 ms |
コンパイル使用メモリ | 82,236 KB |
実行使用メモリ | 172,252 KB |
最終ジャッジ日時 | 2024-06-27 17:33:55 |
合計ジャッジ時間 | 15,507 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 31 |
ソースコード
import os,sys,random,threading#sys.exit() 退出程序from random import randint,choice,shuffle#randint(a,b)从[a,b]范围随机选择一个数#choice(seq)seq可以是一个列表,元组或字符串,从seq中随机选取一个元素#shuffle(x)将一个可变的序列x中的元素打乱from copy import deepcopyfrom io import BytesIO,IOBasefrom types import GeneratorTypefrom functools import lru_cache,reduce#reduce(op,迭代对象)from bisect import bisect_left,bisect_right#bisect_left(x) 大于等于x的第一个下标#bisect_right(x) 大于x的第一个下标from collections import Counter,defaultdict,dequefrom itertools import accumulate,combinations,permutations#accumulate(a)用a序列生成一个累积迭代器,一般list化前面放个[0]做前缀和用#combinations(a,k)a序列选k个 组合迭代器#permutations(a,k)a序列选k个 排列迭代器from heapq import heapify,heappop,heappush#heapify将列表转为堆from typing import Generic,Iterable,Iterator,TypeVar,Union,Listfrom string import ascii_lowercase,ascii_uppercase,digits#小写字母,大写字母,十进制数字from math import ceil,floor,sqrt,pi,factorial,gcd,log,log10,log2,inf#ceil向上取整,floor向下取整 ,sqrt开方 ,factorial阶乘from decimal import Decimal,getcontext#Decimal(s) 实例化Decimal对象,一般使用字符串#getcontext().prec=100 修改精度from sys import stdin, stdout, setrecursionlimitinput = lambda: sys.stdin.readline().rstrip("\r\n")MI = lambda :map(int,input().split())li = lambda :list(MI())ii = lambda :int(input())mod = int(1e9 + 7) #998244353inf = int(1e20)py = lambda :print("YES")pn = lambda :print("NO")DIRS = [(0, 1), (1, 0), (0, -1), (-1, 0)] # 右下左上DIRS8 = [(0, 1), (1, 1), (1, 0), (1, -1), (0, -1), (-1, -1), (-1, 0),(-1, 1)] # →↘↓↙←↖↑↗import os,sys,random,threading#sys.exit() 退出程序#sys.setrecursionlimit(10**6) #调整栈空间from random import randint,choice,shuffle#randint(a,b)从[a,b]范围随机选择一个数#choice(seq)seq可以是一个列表,元组或字符串,从seq中随机选取一个元素#shuffle(x)将一个可变的序列x中的元素打乱from copy import deepcopyfrom io import BytesIO,IOBasefrom types import GeneratorTypefrom functools import lru_cache,reduce#reduce(op,迭代对象)from bisect import bisect_left,bisect_right#bisect_left(x) 大于等于x的第一个下标#bisect_right(x) 大于x的第一个下标from collections import Counter,defaultdict,dequefrom itertools import accumulate,combinations,permutations#accumulate(a)用a序列生成一个累积迭代器,一般list化前面放个[0]做前缀和用#combinations(a,k)a序列选k个 组合迭代器#permutations(a,k)a序列选k个 排列迭代器from heapq import heapify,heappop,heappush#heapify将列表转为堆from typing import Generic,Iterable,Iterator,TypeVar,Union,Listfrom string import ascii_lowercase,ascii_uppercase,digits#小写字母,大写字母,十进制数字from math import ceil,floor,sqrt,pi,factorial,gcd,log,log10,log2,inf#ceil向上取整,floor向下取整 ,sqrt开方 ,factorial阶乘from decimal import Decimal,getcontext#Decimal(s) 实例化Decimal对象,一般使用字符串#getcontext().prec=100 修改精度from sys import stdin, stdout, setrecursionlimitinput = lambda: sys.stdin.readline().rstrip("\r\n")MI = lambda :map(int,input().split())li = lambda :list(MI())ii = lambda :int(input())mod = int(1e9 + 7) #998244353inf = 1<<60py = lambda :print("YES")pn = lambda :print("NO")DIRS = [(0, 1), (1, 0), (0, -1), (-1, 0)] # 右下左上DIRS8 = [(0, 1), (1, 1), (1, 0), (1, -1), (0, -1), (-1, -1), (-1, 0),(-1, 1)] # →↘↓↙←↖↑↗def bootstrap(f, stack=[]): #yielddef wrappedfunc(*args, **kwargs):if stack:return f(*args, **kwargs)else:to = f(*args, **kwargs)while True:if type(to) is GeneratorType:stack.append(to)to = next(to)else:stack.pop()if not stack:breakto = stack[-1].send(to)return toreturn wrappedfuncn,m=li()g=[[] for _ in range(n+1)]for _ in range(n-1):u,v=li()g[u]+=[v]g[v]+=[u]vis=[False]*(n+1)for i in li():vis[i]=Truedis=[-inf]*(n+1)#1为根时,i离i子树内的最远的鬼的距离#dis[i]=-inf 表示i子树内没有鬼f=[0]*(n+1)@bootstrapdef dfs(u,fa):if vis[u]:dis[u]=0for v in g[u]:if v==fa:continueyield dfs(v,u)dis[u]=max(dis[u],dis[v]+1)if f[v] or vis[v]:f[u]+=f[v]+2yield Nonedfs(1,-1)res=[-inf]*(n+1)#i为根时,离i点最远的鬼的距离#print(f)@bootstrapdef dfs2(u,fa):if vis[u]:fi=se=0else:fi=se=-inftot=0for v in g[u]:if f[v] or vis[v]:tot+=f[v]+2if dis[v]+1>fi:fi,se=dis[v]+1,fielif dis[v]+1>se:se=dis[v]+1# if u in [1,3,4]:# print(f,u)res[u]=tot-fifor v in g[u]:if v==fa:continueif fi==dis[v]+1:dis[u]=seelse:dis[u]=fiif f[v] or vis[v]:f[u]=tot-(f[v]+2)else:f[u]=tot# f[u]=tot-int(f[v] or vis[v])*(f[v]+2)# if v==3:# print(int(f[v] or vis[v]),(f[v]+2),3,tot,f[u])yield dfs2(v,u)yield Nonedfs2(1,-1)for i in range(1,n+1):print(res[i])