結果
問題 | No.2427 Tree Distance Two |
ユーザー |
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提出日時 | 2023-08-18 21:39:59 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 731 ms / 2,000 ms |
コード長 | 3,222 bytes |
コンパイル時間 | 662 ms |
コンパイル使用メモリ | 81,920 KB |
実行使用メモリ | 144,512 KB |
最終ジャッジ日時 | 2024-11-28 06:13:06 |
合計ジャッジ時間 | 16,039 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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ファイルパターン | 結果 |
---|---|
other | AC * 35 |
ソースコード
############################################################################################import bisect,collections,copy,heapq,itertools,math,string,sys,queue,time,randomfrom decimal import Decimaldef I(): return input()def IS(): return input().split()def II(): return int(input())def IIS(): return list(map(int,input().split()))def LIIS(): return list(map(int,input().split()))def make_divisors(n):lower_divisors , upper_divisors = [], []i = 1while i*i <= n:if n % i == 0:lower_divisors.append(i)if i != n // i:upper_divisors.append(n//i)i += 1return lower_divisors + upper_divisors[::-1]import mathdef prime_numbers(n):prime = [True for i in range(n+1)]prime[0] = Falseprime[1] = Falsesqrt_n = math.ceil(math.sqrt(n))for i in range(2, sqrt_n):if prime[i]:for j in range(2*i, n+1, i):prime[j] = Falsenumbers=[]for i in range(2,n+1):if prime[i]:numbers.append(i)return numbersdef factorization(n):arr = []temp = nfor i in range(2, int(-(-n**0.5//1))+1):if temp%i==0:cnt=0while temp%i==0:cnt+=1temp //= iarr.append([i, cnt])if temp!=1:arr.append([temp, 1])if arr==[] and n>1:arr.append([n, 1])return arrfrom collections import defaultdictclass UnionFind():def __init__(self, n):self.n = nself.parents = [-1] * ndef find(self, x):if self.parents[x] < 0:return xelse:self.parents[x] = self.find(self.parents[x])return self.parents[x]def union(self, x, y):x = self.find(x)y = self.find(y)if x == y:returnif self.parents[x] > self.parents[y]:x, y = y, xself.parents[x] += self.parents[y]self.parents[y] = xdef size(self, x):return -self.parents[self.find(x)]def same(self, x, y):return self.find(x) == self.find(y)def members(self, x):root = self.find(x)return [i for i in range(self.n) if self.find(i) == root]def roots(self):return [i for i, x in enumerate(self.parents) if x < 0]def group_count(self):return len(self.roots())def all_group_members(self):group_members = defaultdict(list)for member in range(self.n):group_members[self.find(member)].append(member)return group_membersdef __str__(self):return '\n'.join(f'{r}: {m}' for r, m in self.all_group_members().items())INF=10**18MOD=998244353MOD2=10**9+7sys.setrecursionlimit(500005)def bit_count(x):return bin(x).count("1")def yesno(f):if f:print("Yes")else:print("No")dxy=((1,0),(0,-1),(-1,0),(0,1))##################################################################n=II()path=[[] for i in range(n)]for i in range(n-1):u,v=IIS()path[u-1].append(v-1)path[v-1].append(u-1)for i in range(n):res=0for j in path[i]:res+=len(path[j])-1print(res)