結果
問題 | No.1424 Ultrapalindrome |
ユーザー | nephrologist |
提出日時 | 2021-03-12 22:00:57 |
言語 | PyPy3 (7.3.15) |
結果 |
WA
|
実行時間 | - |
コード長 | 1,264 bytes |
コンパイル時間 | 521 ms |
コンパイル使用メモリ | 82,508 KB |
実行使用メモリ | 102,300 KB |
最終ジャッジ日時 | 2024-10-14 12:26:02 |
合計ジャッジ時間 | 4,987 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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 | 42 ms
54,060 KB |
testcase_01 | AC | 42 ms
55,112 KB |
testcase_02 | AC | 42 ms
53,944 KB |
testcase_03 | AC | 43 ms
54,504 KB |
testcase_04 | AC | 43 ms
54,388 KB |
testcase_05 | AC | 42 ms
55,612 KB |
testcase_06 | AC | 43 ms
54,688 KB |
testcase_07 | AC | 43 ms
54,876 KB |
testcase_08 | WA | - |
testcase_09 | AC | 168 ms
89,500 KB |
testcase_10 | AC | 177 ms
89,676 KB |
testcase_11 | AC | 130 ms
84,092 KB |
testcase_12 | AC | 158 ms
88,984 KB |
testcase_13 | AC | 93 ms
79,360 KB |
testcase_14 | AC | 138 ms
84,880 KB |
testcase_15 | AC | 43 ms
54,744 KB |
testcase_16 | AC | 118 ms
83,024 KB |
testcase_17 | AC | 133 ms
84,420 KB |
testcase_18 | AC | 133 ms
82,000 KB |
testcase_19 | AC | 167 ms
85,216 KB |
testcase_20 | AC | 95 ms
78,648 KB |
testcase_21 | AC | 143 ms
82,916 KB |
testcase_22 | AC | 120 ms
80,796 KB |
testcase_23 | AC | 71 ms
73,476 KB |
testcase_24 | AC | 93 ms
78,236 KB |
testcase_25 | AC | 95 ms
78,380 KB |
testcase_26 | AC | 201 ms
86,944 KB |
testcase_27 | WA | - |
testcase_28 | AC | 116 ms
91,308 KB |
testcase_29 | AC | 114 ms
91,528 KB |
testcase_30 | AC | 134 ms
102,300 KB |
testcase_31 | AC | 120 ms
101,596 KB |
ソースコード
import sys from collections import deque input = sys.stdin.buffer.readline n = int(input()) graph = [[] for _ in range(n)] deg1 = [0] * n deg2 = [0] * n for _ in range(n - 1): a, b = map(int, input().split()) a, b = a - 1, b - 1 graph[a].append(b) graph[b].append(a) deg1[a] += 1 deg1[b] += 1 root = -1 kouho = deque() haji = [] dist1 = [-1] * n done = [0] * n for i in range(n): if deg1[i] != 1: root = i if deg1[i] == 1: haji.append(i) def ok(): print("Yes") exit() def ng(): print("No") exit() if root == -1: if n == 2: ok() else: ng() # bfs # print("kouho", kouho) v = haji[0] dist1[v] = 0 kouho.append(v) while kouho: v = kouho.popleft() d = dist1[v] for u in graph[v]: if dist1[u] == -1: dist1[u] = d + 1 kouho.append(u) temp = dist1[haji[1]] for v in haji[1:]: if dist1[v] != temp: ng() dist2 = [-1] * n v = haji[-1] dist2[v] = 0 kouho.append(v) while kouho: v = kouho.popleft() d = dist2[v] for u in graph[v]: if dist2[u] == -1: dist2[u] = d + 1 kouho.append(u) temp = dist2[haji[0]] for v in haji[:-1]: if dist2[v] != temp: ng() ok()