結果
問題 |
No.2780 The Bottle Imp
|
ユーザー |
![]() |
提出日時 | 2024-06-07 22:35:37 |
言語 | PyPy3 (7.3.15) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,275 bytes |
コンパイル時間 | 409 ms |
コンパイル使用メモリ | 82,404 KB |
実行使用メモリ | 111,672 KB |
最終ジャッジ日時 | 2024-12-27 14:11:28 |
合計ジャッジ時間 | 7,355 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | WA * 4 |
other | WA * 40 |
ソースコード
from collections import Counter, defaultdict, deque import sys input=sys.stdin.readline N=int(input()) n=N #n,m=map(int,input().split()) class SCC: def __init__(self,n): self.n = n self.edges = [] def add_edge(self,a,b): self.edges.append((a,b)) def scc(self): n = self.n counter = [0]*(n+1) elist = [0]*len(self.edges) for x,y in self.edges: counter[x+1] += 1 for x in range(n): counter[x+1] += counter[x] start = counter[:] for x,y in self.edges: elist[counter[x]] = y counter[x] += 1 k = 0 low = [0]*n num = [-1]*n pre = [None]*n visited = [] q = [] sccs = [] for x in range(n): if num[x] < 0: q.append(x) q.append(x) while q: x = q.pop() if num[x] < 0: low[x] = num[x] = k k += 1 visited.append(x) for i in range(start[x],start[x+1]): y = elist[i] if num[y] < 0: q.append(y) q.append(y) pre[y] = x else: low[x] = min(low[x],num[y]) else: if low[x] == num[x]: scc = [] while 1: y = visited.pop() num[y] = n scc.append(y) if x == y: break sccs.append(scc) y = pre[x] if y is not None: low[y] = min(low[y],low[x]) return sccs[::-1] scc = SCC(n) C=[] for i in range(N): A=list(map(int, input().split())) B=A[1:] for b in B: C.append((i,b-1)) scc.add_edge(i,b-1) ans = scc.scc() d=len(ans) D=[-1]*N for i in range(len(ans)): B=ans[i] for b in B: D[b]=i