結果
問題 | No.1928 Make a Binary Tree |
ユーザー | tamato |
提出日時 | 2022-05-06 22:19:47 |
言語 | PyPy3 (7.3.15) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,076 bytes |
コンパイル時間 | 158 ms |
コンパイル使用メモリ | 82,048 KB |
実行使用メモリ | 202,340 KB |
最終ジャッジ日時 | 2024-07-05 23:37:29 |
合計ジャッジ時間 | 32,999 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 |
---|---|---|
testcase_00 | AC | 47 ms
54,656 KB |
testcase_01 | AC | 49 ms
54,784 KB |
testcase_02 | AC | 44 ms
54,528 KB |
testcase_03 | AC | 43 ms
54,272 KB |
testcase_04 | AC | 44 ms
54,528 KB |
testcase_05 | AC | 46 ms
54,144 KB |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | AC | 44 ms
54,912 KB |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | WA | - |
testcase_28 | WA | - |
testcase_29 | WA | - |
testcase_30 | WA | - |
testcase_31 | WA | - |
testcase_32 | WA | - |
testcase_33 | WA | - |
testcase_34 | WA | - |
testcase_35 | AC | 435 ms
179,240 KB |
testcase_36 | AC | 628 ms
187,512 KB |
testcase_37 | WA | - |
testcase_38 | AC | 44 ms
54,016 KB |
testcase_39 | AC | 995 ms
196,072 KB |
testcase_40 | AC | 946 ms
195,536 KB |
testcase_41 | AC | 956 ms
195,400 KB |
testcase_42 | AC | 965 ms
195,776 KB |
testcase_43 | AC | 965 ms
195,508 KB |
testcase_44 | AC | 974 ms
195,480 KB |
testcase_45 | AC | 971 ms
196,096 KB |
testcase_46 | AC | 960 ms
195,956 KB |
testcase_47 | AC | 1,025 ms
196,184 KB |
testcase_48 | AC | 977 ms
197,568 KB |
testcase_49 | AC | 358 ms
202,340 KB |
testcase_50 | AC | 905 ms
181,820 KB |
testcase_51 | AC | 860 ms
180,532 KB |
testcase_52 | AC | 877 ms
179,444 KB |
testcase_53 | AC | 838 ms
180,368 KB |
testcase_54 | AC | 835 ms
180,968 KB |
testcase_55 | AC | 376 ms
176,940 KB |
testcase_56 | WA | - |
testcase_57 | WA | - |
testcase_58 | WA | - |
testcase_59 | AC | 422 ms
151,532 KB |
ソースコード
mod = 998244353 def main(): import sys from collections import deque from heapq import heappush, heappop input = sys.stdin.buffer.readline N = int(input()) adj = [[] for _ in range(N+1)] for _ in range(N-1): a, b = map(int, input().split()) adj[a].append(b) adj[b].append(a) que = deque() que.append(1) seen = [-1] * (N+1) seen[1] = 0 par = [0] * (N+1) child = [[] for _ in range(N+1)] seq = [] while que: v = que.popleft() seq.append(v) for u in adj[v]: if seen[u] == -1: seen[u] = seen[v] + 1 par[u] = v child[v].append(u) que.append(u) seq.reverse() size = [1] * (N + 1) for v in seq: for u in child[v]: size[v] += size[u] pq_list = [[] for _ in range(N+1)] adj_new = [[] for _ in range(N+1)] for v in seq: if not child[v]: continue for u in child[v]: heappush(pq_list[v], (-size[u], u)) # merge for u in child[v]: if len(pq_list[v]) < len(pq_list[u]): pq_list[v], pq_list[u] = pq_list[u], pq_list[v] for s, w in pq_list[u]: heappush(pq_list[v], (-s, w)) s1, u1 = heappop(pq_list[v]) adj_new[v].append(u1) adj_new[u1].append(v) size[v] = 1-s1 if pq_list[v]: s2, u2 = heappop(pq_list[v]) adj_new[v].append(u2) adj_new[u2].append(v) size[v] += -s2 adj = adj_new que = deque() que.append(1) seen = [-1] * (N+1) seen[1] = 0 par = [0] * (N+1) child = [[] for _ in range(N+1)] seq = [] while que: v = que.popleft() seq.append(v) for u in adj[v]: if seen[u] == -1: seen[u] = seen[v] + 1 par[u] = v child[v].append(u) que.append(u) seq.reverse() print(len(seq)) if __name__ == '__main__': main()