結果
問題 | No.2200 Weird Shortest Path |
ユーザー | vwxyz |
提出日時 | 2023-12-01 14:39:49 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 912 ms / 2,000 ms |
コード長 | 4,081 bytes |
コンパイル時間 | 477 ms |
コンパイル使用メモリ | 82,468 KB |
実行使用メモリ | 120,496 KB |
最終ジャッジ日時 | 2024-09-26 15:37:31 |
合計ジャッジ時間 | 23,617 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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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 | 41 ms
54,772 KB |
testcase_01 | AC | 40 ms
55,652 KB |
testcase_02 | AC | 40 ms
55,240 KB |
testcase_03 | AC | 50 ms
64,544 KB |
testcase_04 | AC | 63 ms
72,504 KB |
testcase_05 | AC | 39 ms
54,868 KB |
testcase_06 | AC | 42 ms
56,384 KB |
testcase_07 | AC | 48 ms
62,108 KB |
testcase_08 | AC | 61 ms
70,788 KB |
testcase_09 | AC | 61 ms
68,472 KB |
testcase_10 | AC | 44 ms
56,404 KB |
testcase_11 | AC | 43 ms
55,964 KB |
testcase_12 | AC | 45 ms
55,480 KB |
testcase_13 | AC | 42 ms
56,048 KB |
testcase_14 | AC | 43 ms
55,672 KB |
testcase_15 | AC | 60 ms
68,588 KB |
testcase_16 | AC | 43 ms
54,868 KB |
testcase_17 | AC | 352 ms
89,296 KB |
testcase_18 | AC | 548 ms
102,896 KB |
testcase_19 | AC | 861 ms
108,664 KB |
testcase_20 | AC | 833 ms
115,400 KB |
testcase_21 | AC | 374 ms
97,424 KB |
testcase_22 | AC | 477 ms
97,784 KB |
testcase_23 | AC | 871 ms
114,888 KB |
testcase_24 | AC | 237 ms
84,452 KB |
testcase_25 | AC | 829 ms
111,832 KB |
testcase_26 | AC | 887 ms
113,620 KB |
testcase_27 | AC | 354 ms
94,980 KB |
testcase_28 | AC | 654 ms
106,320 KB |
testcase_29 | AC | 900 ms
115,788 KB |
testcase_30 | AC | 880 ms
112,848 KB |
testcase_31 | AC | 564 ms
102,004 KB |
testcase_32 | AC | 912 ms
120,000 KB |
testcase_33 | AC | 883 ms
119,740 KB |
testcase_34 | AC | 871 ms
120,456 KB |
testcase_35 | AC | 871 ms
120,132 KB |
testcase_36 | AC | 882 ms
120,004 KB |
testcase_37 | AC | 899 ms
120,384 KB |
testcase_38 | AC | 893 ms
120,496 KB |
testcase_39 | AC | 473 ms
105,840 KB |
testcase_40 | AC | 508 ms
118,640 KB |
testcase_41 | AC | 452 ms
104,644 KB |
testcase_42 | AC | 486 ms
119,952 KB |
testcase_43 | AC | 861 ms
116,700 KB |
testcase_44 | AC | 896 ms
117,088 KB |
testcase_45 | AC | 875 ms
116,960 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,rollback=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 self.rollback=rollback if self.rollback: self.operate_list=[] self.operate_set=[] def Find(self,x): stack=[] while self.parents[x]!=None: stack.append(x) x=self.parents[x] if not self.rollback: 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 self.rollback: self.operate_list.append([]) self.operate_set.append([]) 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 if self.rollback: self.operate_list[-1].append((self.parents,root_y,self.parents[root_y])) self.operate_list[-1].append((self.size,root_x,self.size[root_x])) self.operate_set[-1].append(root_y) if self.label!=None: self.operate_list[-1]((self.label,root_x,self.label[root_x])) if self.weighted: self.operate_list[-1].append((self.weight,root_y,self.weight[root_y])) 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 Linked_Components_Count(self): return len(self.roots) def Linked_Components(self): linked_components=defaultdict(list) for x in range(self.N): linked_components[self.Find(x)].append(x) return linked_components def Rollback(self): assert self.rollback if self.operate_list: for lst,x,v in self.operate_list.pop(): lst[x]=v for x in self.operate_set.pop(): self.roots.add(x) return True else: return False 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}: {linked_components[r]}" for r in sorted(list(linked_components.keys()))) N,M=map(int,readline().split()) edges=[] for m in range(M): a,b,w=map(int,readline().split()) a-=1;b-=1 edges.append((w,a,b)) edges.sort() ans=0 UF=UnionFind(N) for w,a,b in edges: if not UF.Same(a,b): ans+=UF.Size(a)*UF.Size(b)*w UF.Union(a,b) print(ans)