結果
問題 | No.1917 LCMST |
ユーザー |
👑 |
提出日時 | 2022-05-05 14:23:01 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 3,501 ms / 4,000 ms |
コード長 | 1,948 bytes |
コンパイル時間 | 369 ms |
コンパイル使用メモリ | 82,176 KB |
実行使用メモリ | 311,840 KB |
最終ジャッジ日時 | 2024-07-04 15:50:56 |
合計ジャッジ時間 | 72,566 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 42 |
ソースコード
from math import gcd class UnionFind: def __init__(self, n): self.n = n self.parents = [-1] * n self.group = n def find(self, x): if self.parents[x] < 0: return x else: 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: return self.group -= 1 if self.parents[x] > self.parents[y]: x, y = y, x self.parents[x] += self.parents[y] self.parents[y] = x def 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 self.group def all_group_members(self): dic = {r:[] for r in self.roots()} for i in range(self.n): dic[self.find(i)].append(i) return dic def __str__(self): return '\n'.join('{}: {}'.format(r, self.members(r)) for r in self.roots()) n = int(input()) A = list(map(int, input().split())) A.sort() ma = A[-1] B = [] bef = -1 ans = 0 ind = [-1] * (ma + 1) l = 0 for a in A: if a == bef: ans += a else: B.append(a) bef = a ind[a] = l l += 1 edges = [] for i in range(1, ma + 1): ii = -1 for j in range(i, ma + 1, i): if ind[j] != -1: if ii == -1: ii = ind[j] else: jj = ind[j] edges.append((B[ii] * B[jj] // gcd(B[ii], B[jj]), ii, jj)) edges.sort() UF = UnionFind(n) for c, i, j in edges: if not UF.same(i, j): ans += c UF.union(i, j) print(ans)