結果
問題 | No.168 ものさし |
ユーザー | vwxyz |
提出日時 | 2022-06-21 10:51:55 |
言語 | Python3 (3.12.2 + numpy 1.26.4 + scipy 1.12.0) |
結果 |
AC
|
実行時間 | 1,335 ms / 2,000 ms |
コード長 | 3,016 bytes |
コンパイル時間 | 238 ms |
コンパイル使用メモリ | 13,184 KB |
実行使用メモリ | 87,108 KB |
最終ジャッジ日時 | 2024-10-14 04:14:10 |
合計ジャッジ時間 | 10,920 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 | 240 ms
27,236 KB |
testcase_01 | AC | 30 ms
11,008 KB |
testcase_02 | AC | 33 ms
11,136 KB |
testcase_03 | AC | 30 ms
11,008 KB |
testcase_04 | AC | 29 ms
10,880 KB |
testcase_05 | AC | 29 ms
11,008 KB |
testcase_06 | AC | 30 ms
11,008 KB |
testcase_07 | AC | 30 ms
11,136 KB |
testcase_08 | AC | 31 ms
11,136 KB |
testcase_09 | AC | 34 ms
11,264 KB |
testcase_10 | AC | 49 ms
12,416 KB |
testcase_11 | AC | 222 ms
25,088 KB |
testcase_12 | AC | 857 ms
61,800 KB |
testcase_13 | AC | 1,317 ms
83,944 KB |
testcase_14 | AC | 1,284 ms
85,052 KB |
testcase_15 | AC | 31 ms
10,880 KB |
testcase_16 | AC | 33 ms
11,264 KB |
testcase_17 | AC | 39 ms
11,776 KB |
testcase_18 | AC | 66 ms
14,080 KB |
testcase_19 | AC | 1,216 ms
84,156 KB |
testcase_20 | AC | 1,291 ms
86,828 KB |
testcase_21 | AC | 1,335 ms
87,108 KB |
testcase_22 | AC | 1,276 ms
86,824 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)