結果

問題 No.748 yuki国のお財布事情
ユーザー compass19
提出日時 2018-10-19 23:35:58
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 1,669 bytes
コンパイル時間 103 ms
コンパイル使用メモリ 12,800 KB
実行使用メモリ 654,480 KB
最終ジャッジ日時 2024-11-18 22:46:14
合計ジャッジ時間 33,154 ms
ジャッジサーバーID
(参考情報)
judge5 / judge2
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 3
other AC * 11 TLE * 8 MLE * 7
権限があれば一括ダウンロードができます

ソースコード

diff #

N, M, K = map(int, input().split())
Root = [n for n in range(N)]
Children = [{n} for n in range(N)]
edges = [None for _ in range(M)]
total_cost = 0
for m in range(M):
	a, b, c = map(int, input().split())
	edges[m] = (a-1, b-1, c)
	total_cost += c
abs_edges = set(int(input())-1 for _ in range(K))
sorted_edges = sorted([e for e in set(range(M)) - abs_edges], key=lambda x: edges[x][2])

# 最小木
T = {edges[e] for e in abs_edges}

# del_weight = 0

# union tree
for e in abs_edges:
	a, b, c = edges[e]
	total_cost -= c
	if Root[a] == a and Root[b] == b:
		Children[a] |= Children[Root[b]]
		for c in Children[Root[b]]:
			Root[c] = a
	elif Root[a] == a and Root[b] != b:
		Children[Root[a]] |= Children[Root[b]]	
		for c in Children[Root[b]]:
			Root[c] = Root[a]
	else:
		Children[Root[b]] |= Children[Root[a]]
		for c in Children[Root[a]]:
			Root[c] = Root[b]

is_finish = False

for n in range(N):
	if len(Children[n]) == N:
		is_finish = True

for e in sorted_edges:
	if is_finish:
		break
	# edge eを追加できるかどうか
	a, b, c = edges[e]
	if Root[a] == Root[b]:
		continue
	else:
		total_cost -= c
	# 	del_weight += c
	# 	continue
	if Root[a] == a and Root[b] == b:
		Children[a] |= Children[Root[b]]
		for c in Children[Root[b]]:
			Root[c] = a
		if len(Children[a]) == N:
			is_finish = True
	elif Root[a] == a and Root[b] != b:
		Children[Root[a]] |= Children[Root[b]]
		for c in Children[Root[b]]:
			Root[c] = Root[a]
		if len(Children[Root[a]]) == N:
			is_finish = True	
	else:
		Children[Root[b]] |= Children[Root[a]]
		for c in Children[Root[a]]:
			Root[c] = Root[b]
		if len(Children[Root[b]]) == N:
			is_finish = True

print(total_cost)
0