結果
| 問題 |
No.697 池の数はいくつか
|
| ユーザー |
vwxyz
|
| 提出日時 | 2022-01-05 07:09:48 |
| 言語 | Python3 (3.13.1 + numpy 2.2.1 + scipy 1.14.1) |
| 結果 |
MLE
|
| 実行時間 | - |
| コード長 | 3,636 bytes |
| コンパイル時間 | 202 ms |
| コンパイル使用メモリ | 13,184 KB |
| 実行使用メモリ | 817,716 KB |
| 最終ジャッジ日時 | 2024-11-25 17:08:08 |
| 合計ジャッジ時間 | 57,110 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | MLE * 3 |
| other | AC * 26 TLE * 3 MLE * 3 |
ソースコード
import sys
readline=sys.stdin.readline
from collections import deque
class Graph:
def __init__(self,V,edges=False,graph=False,directed=False,weighted=False,inf=float("inf")):
self.V=V
self.directed=directed
self.weighted=weighted
self.inf=inf
if not graph:
self.edges=edges
self.graph=[[] for i in range(self.V)]
if weighted:
for i,j,d in self.edges:
self.graph[i].append((j,d))
if not self.directed:
self.graph[j].append((i,d))
else:
for i,j in self.edges:
self.graph[i].append(j)
if not self.directed:
self.graph[j].append(i)
else:
self.graph=graph
self.edges=[]
for i in range(self.V):
if self.weighted:
for j,d in self.graph[i]:
if self.directed or not self.directed and i<=j:
self.edges.append((i,j,d))
else:
for j in self.graph[i]:
if self.directed or not self.directed and i<=j:
self.edges.append((i,j))
def MIV_BFS(self,initial_vertices=False,bipartite_graph=False,linked_components=False,parents=False):
if not initial_vertices:
initial_vertices=[i for i in range(self.V)]
seen=[False]*self.V
if bipartite_graph:
bg=[None]*self.V
cnt=-1
if linked_components:
lc=[]
if parents:
ps=[None]*self.V
for s in initial_vertices:
if seen[s]:
continue
seen[s]=True
if bipartite_graph:
cnt+=1
bg[s]=(cnt,0)
if linked_components:
lc.append([s])
queue=deque([s])
while queue:
x=queue.popleft()
for y in self.graph[x]:
if self.weighted:
y,d=y
if not seen[y]:
seen[y]=True
queue.append(y)
if bipartite_graph:
bg[y]=(cnt,bg[x][1]^1)
if linked_components:
lc[-1].append(y)
if parents:
ps[y]=x
if bipartite_graph:
bg_=bg
bg=[[[],[]] for i in range(cnt+1)]
for tpl in self.edges:
i,j=tpl[:2] if self.weighted else tpl
if not bg_[i][1]^bg_[j][1]:
bg[bg_[i][0]]=False
for x in range(self.V):
if bg[bg_[x][0]]:
bg[bg_[x][0]][bg_[x][1]].append(x)
retu=()
if bipartite_graph:
retu+=(bg,)
if linked_components:
retu+=(lc,)
if parents:
retu=(ps,)
if len(retu)==1:
retu=retu[0]
return retu
H,W=map(int,readline().split())
A=[list(map(int,readline().split())) for h in range(H)]
edges=[]
for h in range(H-1):
for w in range(W):
if A[h][w] and A[h+1][w]:
edges.append((h*W+w,(h+1)*W+w))
for h in range(H):
for w in range(W-1):
if A[h][w] and A[h][w+1]:
edges.append((h*W+w,h*W+w+1))
G=Graph(H*W,edges=edges)
ans=len(G.MIV_BFS(linked_components=True))
for h in range(H):
for w in range(W):
if A[h][w]==0:
ans-=1
print(ans)
vwxyz