結果
問題 | No.1983 [Cherry 4th Tune C] 南の島のマーメイド |
ユーザー | neginagi |
提出日時 | 2022-08-28 13:55:23 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 1,706 ms / 4,000 ms |
コード長 | 1,932 bytes |
コンパイル時間 | 428 ms |
コンパイル使用メモリ | 82,184 KB |
実行使用メモリ | 337,976 KB |
最終ジャッジ日時 | 2024-04-23 12:52:05 |
合計ジャッジ時間 | 30,366 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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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 | 124 ms
86,372 KB |
testcase_01 | AC | 124 ms
86,072 KB |
testcase_02 | AC | 123 ms
86,352 KB |
testcase_03 | AC | 125 ms
86,372 KB |
testcase_04 | AC | 124 ms
86,288 KB |
testcase_05 | AC | 125 ms
86,344 KB |
testcase_06 | AC | 128 ms
86,340 KB |
testcase_07 | AC | 126 ms
86,096 KB |
testcase_08 | AC | 191 ms
91,136 KB |
testcase_09 | AC | 197 ms
91,300 KB |
testcase_10 | AC | 212 ms
94,160 KB |
testcase_11 | AC | 226 ms
95,812 KB |
testcase_12 | AC | 208 ms
91,200 KB |
testcase_13 | AC | 656 ms
135,384 KB |
testcase_14 | AC | 712 ms
150,896 KB |
testcase_15 | AC | 779 ms
142,988 KB |
testcase_16 | AC | 355 ms
114,828 KB |
testcase_17 | AC | 734 ms
156,924 KB |
testcase_18 | AC | 694 ms
141,120 KB |
testcase_19 | AC | 1,170 ms
222,524 KB |
testcase_20 | AC | 765 ms
140,836 KB |
testcase_21 | AC | 812 ms
156,372 KB |
testcase_22 | AC | 976 ms
181,632 KB |
testcase_23 | AC | 1,413 ms
260,140 KB |
testcase_24 | AC | 1,308 ms
244,328 KB |
testcase_25 | AC | 1,100 ms
190,692 KB |
testcase_26 | AC | 1,361 ms
221,052 KB |
testcase_27 | AC | 1,327 ms
266,860 KB |
testcase_28 | AC | 1,368 ms
220,844 KB |
testcase_29 | AC | 1,706 ms
298,740 KB |
testcase_30 | AC | 1,331 ms
220,976 KB |
testcase_31 | AC | 1,337 ms
221,208 KB |
testcase_32 | AC | 1,334 ms
221,044 KB |
testcase_33 | AC | 121 ms
86,040 KB |
testcase_34 | AC | 261 ms
106,896 KB |
testcase_35 | AC | 706 ms
309,148 KB |
testcase_36 | AC | 398 ms
124,812 KB |
testcase_37 | AC | 121 ms
86,092 KB |
testcase_38 | AC | 193 ms
89,540 KB |
testcase_39 | AC | 902 ms
337,976 KB |
testcase_40 | AC | 514 ms
172,332 KB |
ソースコード
import sys input = sys.stdin.readline sys.setrecursionlimit(10 ** 7) INF = float("INF") MOD = 10 ** 9 + 7 MOD2 = 998244353 from heapq import heappop, heappush import math from collections import Counter, deque from itertools import accumulate, combinations, combinations_with_replacement, permutations from bisect import bisect_left, bisect_right import decimal n, m, q = map(int, input().split()) edge = [[] for _ in range(n)] for i in range(m): u, v = map(int, input().split()) u, v = u - 1, v - 1 edge[u].append(v) edge[v].append(u) # 単純に橋となる辺を返す def bridge(G, N): result = set() label = [None]*N gen = 0 cost = [0]*N def dfs(u, p): nonlocal gen res = 0 for v in G[u]: if v == p: continue if label[v] is not None: if label[v] < label[u]: cost[v] += 1 res += 1 else: label[v] = gen; gen += 1 r = dfs(v, u) if r == 0: result.add((u, v) if u < v else (v, u)) res += r res -= cost[u] return res for v in range(N): if not label[v]: label[v] = gen; gen += 1 r = dfs(v, -1) assert r == 0, r return result ret = bridge(edge, n) edge2 = [[] for _ in range(n)] for u, v in ret: edge2[u].append(v) edge2[v].append(u) seen = [-1] * n for i in range(n): if seen[i] != -1: continue seen[i] = i que = deque() que.append(i) while que: x = que.popleft() for to in edge2[x]: if seen[to] != -1: continue seen[to] = seen[x] que.append(to) for i in range(q): x, y = map(int, input().split()) x, y = x - 1, y - 1 if seen[x] != seen[y]: print("No") else: print("Yes")