結果
問題 | No.168 ものさし |
ユーザー | vwxyz |
提出日時 | 2022-06-21 10:52:03 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 1,649 ms / 2,000 ms |
コード長 | 3,016 bytes |
コンパイル時間 | 250 ms |
コンパイル使用メモリ | 82,048 KB |
実行使用メモリ | 151,564 KB |
最終ジャッジ日時 | 2024-10-14 04:14:35 |
合計ジャッジ時間 | 13,600 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 357 ms
94,336 KB |
testcase_01 | AC | 46 ms
54,016 KB |
testcase_02 | AC | 45 ms
54,400 KB |
testcase_03 | AC | 46 ms
54,016 KB |
testcase_04 | AC | 45 ms
54,272 KB |
testcase_05 | AC | 45 ms
54,400 KB |
testcase_06 | AC | 45 ms
54,400 KB |
testcase_07 | AC | 46 ms
54,272 KB |
testcase_08 | AC | 46 ms
54,144 KB |
testcase_09 | AC | 57 ms
61,824 KB |
testcase_10 | AC | 75 ms
64,256 KB |
testcase_11 | AC | 312 ms
93,568 KB |
testcase_12 | AC | 1,100 ms
127,332 KB |
testcase_13 | AC | 1,647 ms
150,588 KB |
testcase_14 | AC | 1,563 ms
133,492 KB |
testcase_15 | AC | 47 ms
54,016 KB |
testcase_16 | AC | 56 ms
61,568 KB |
testcase_17 | AC | 66 ms
63,872 KB |
testcase_18 | AC | 104 ms
68,992 KB |
testcase_19 | AC | 1,563 ms
149,692 KB |
testcase_20 | AC | 1,649 ms
151,052 KB |
testcase_21 | AC | 1,643 ms
151,564 KB |
testcase_22 | AC | 1,624 ms
150,804 KB |
ソースコード
import sys readline=sys.stdin.readline from collections import defaultdict class UnionFind: def __init__(self,N,label=None,f=None,weighted=False): self.N=N self.parents=[None]*self.N self.size=[1]*self.N self.roots={i for i in range(self.N)} self.label=label if self.label!=None: self.label=[x for x in label] self.f=f self.weighted=weighted if self.weighted: self.weight=[0]*self.N def Find(self,x): stack=[] while self.parents[x]!=None: stack.append(x) x=self.parents[x] if self.weighted: w=0 for y in stack[::-1]: self.parents[y]=x w+=self.weight[y] self.weight[y]=w else: for y in stack[::-1]: self.parents[y]=x return x def Union(self,x,y,w=None): root_x=self.Find(x) root_y=self.Find(y) if root_x==root_y: if self.weighted: if self.weight[y]-self.weight[x]==w: return True else: return False else: if self.size[root_x]<self.size[root_y]: x,y=y,x root_x,root_y=root_y,root_x if self.weighted: w=-w self.parents[root_y]=root_x self.size[root_x]+=self.size[root_y] self.roots.remove(root_y) if self.label!=None: self.label[root_x]=self.f(self.label[root_x],self.label[root_y]) if self.weighted: self.weight[root_y]=w+self.weight[x]-self.weight[y] def Size(self,x): return self.size[self.Find(x)] def Same(self,x,y): return self.Find(x)==self.Find(y) def Label(self,x): return self.label[self.Find(x)] def Weight(self,x,y): root_x=self.Find(x) root_y=self.Find(y) if root_x!=root_y: return None return self.weight[y]-self.weight[x] def Roots(self): return list(self.roots) def Link_Components_Count(self): return len(self.roots) def __str__(self): linked_components=defaultdict(list) for x in range(self.N): linked_components[self.Find(x)].append(x) return "\n".join(f"{r}: {m}" for r,m in linked_components.items()) def Bisect_Int(ok,ng,is_ok): while abs(ok-ng)>1: mid=(ok+ng)//2 if is_ok(mid): ok=mid else: ng=mid return ok N=int(readline()) X,Y=[],[] for _ in range(N): x,y=map(int,readline().split()) X.append(x) Y.append(y) edges=[] for i in range(N): for j in range(i+1,N): edges.append(((X[i]-X[j])**2+(Y[i]-Y[j])**2,i,j)) edges.sort() UF=UnionFind(N) for d,i,j in edges: UF.Union(i,j) if UF.Same(0,N-1): break def is_ok(x): return 100*x**2>=d ans=10*Bisect_Int(1<<30,0,is_ok) print(ans)