結果
問題 | No.1316 Maximum Minimum Spanning Tree |
ユーザー | lydialitvyak |
提出日時 | 2024-06-08 10:46:13 |
言語 | Python3 (3.12.2 + numpy 1.26.4 + scipy 1.12.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,225 bytes |
コンパイル時間 | 223 ms |
コンパイル使用メモリ | 12,800 KB |
実行使用メモリ | 11,008 KB |
最終ジャッジ日時 | 2024-06-08 10:46:18 |
合計ジャッジ時間 | 4,905 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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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 |
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testcase_00 | AC | 34 ms
10,880 KB |
testcase_01 | WA | - |
testcase_02 | RE | - |
testcase_03 | RE | - |
testcase_04 | AC | 33 ms
10,880 KB |
testcase_05 | WA | - |
testcase_06 | RE | - |
testcase_07 | RE | - |
testcase_08 | RE | - |
testcase_09 | RE | - |
testcase_10 | RE | - |
testcase_11 | RE | - |
testcase_12 | RE | - |
testcase_13 | RE | - |
testcase_14 | RE | - |
testcase_15 | RE | - |
testcase_16 | RE | - |
testcase_17 | RE | - |
testcase_18 | RE | - |
testcase_19 | RE | - |
testcase_20 | RE | - |
testcase_21 | RE | - |
testcase_22 | RE | - |
testcase_23 | RE | - |
testcase_24 | RE | - |
testcase_25 | RE | - |
testcase_26 | RE | - |
testcase_27 | RE | - |
testcase_28 | RE | - |
testcase_29 | RE | - |
testcase_30 | RE | - |
testcase_31 | RE | - |
testcase_32 | RE | - |
testcase_33 | RE | - |
testcase_34 | RE | - |
testcase_35 | RE | - |
testcase_36 | RE | - |
testcase_37 | RE | - |
testcase_38 | RE | - |
testcase_39 | RE | - |
testcase_40 | RE | - |
testcase_41 | RE | - |
testcase_42 | RE | - |
testcase_43 | RE | - |
testcase_44 | RE | - |
testcase_45 | RE | - |
testcase_46 | RE | - |
testcase_47 | RE | - |
testcase_48 | RE | - |
testcase_49 | RE | - |
testcase_50 | RE | - |
testcase_51 | RE | - |
testcase_52 | RE | - |
testcase_53 | RE | - |
testcase_54 | RE | - |
testcase_55 | RE | - |
testcase_56 | RE | - |
testcase_57 | RE | - |
testcase_58 | RE | - |
testcase_59 | RE | - |
testcase_60 | RE | - |
testcase_61 | RE | - |
testcase_62 | RE | - |
testcase_63 | RE | - |
testcase_64 | RE | - |
testcase_65 | RE | - |
testcase_66 | RE | - |
testcase_67 | RE | - |
testcase_68 | RE | - |
testcase_69 | RE | - |
testcase_70 | RE | - |
testcase_71 | RE | - |
testcase_72 | RE | - |
testcase_73 | RE | - |
testcase_74 | RE | - |
testcase_75 | RE | - |
testcase_76 | RE | - |
testcase_77 | RE | - |
testcase_78 | RE | - |
testcase_79 | RE | - |
testcase_80 | RE | - |
testcase_81 | RE | - |
ソースコード
def parse_input(input_str): lines = input_str.strip().split("\n") N, M, K = map(int, lines[0].split()) edges = [] for i in range(1, M + 1): a, b, c, d = map(int, lines[i].split()) edges.append((a, b, c, d)) return N, M, K, edges def find(parent, i): if parent[i] == i: return i else: parent[i] = find(parent, parent[i]) return parent[i] def union(parent, rank, x, y): root_x = find(parent, x) root_y = find(parent, y) if root_x != root_y: if rank[root_x] > rank[root_y]: parent[root_y] = root_x elif rank[root_x] < rank[root_y]: parent[root_x] = root_y else: parent[root_y] = root_x rank[root_x] += 1 def kruskal(N, edges): parent = [i for i in range(N + 1)] rank = [0] * (N + 1) mst_weight = 0 edge_count = 0 for a, b, weight in sorted(edges, key=lambda x: x[2]): if find(parent, a) != find(parent, b): union(parent, rank, a, b) mst_weight += weight edge_count += 1 if edge_count == N - 1: break if edge_count == N - 1: return mst_weight else: return float("inf") def calculate_maximum_score(N, M, K, edges): max_score = float("-inf") best_x = None for x1 in range(10): for x2 in range(10): for x3 in range(10): modified_edges = [] total_penalty = 0 for idx, (a, b, c, d) in enumerate(edges): x = [x1, x2, x3][idx] modified_edges.append((a, b, c + x)) total_penalty += d * x mst_weight = kruskal(N, modified_edges) score = K * mst_weight - total_penalty if score > max_score: max_score = score best_x = (x1, x2, x3) return int(max_score) if max_score != float("-inf") else -1 def main(): import sys input = sys.stdin.read input_str = input() N, M, K, edges = parse_input(input_str) result = calculate_maximum_score(N, M, K, edges) print(result) if __name__ == "__main__": main()