結果
問題 | No.2674 k-Walk on Bipartite |
ユーザー | hato336 |
提出日時 | 2024-03-15 22:45:36 |
言語 | PyPy3 (7.3.15) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,491 bytes |
コンパイル時間 | 266 ms |
コンパイル使用メモリ | 82,888 KB |
実行使用メモリ | 111,456 KB |
最終ジャッジ日時 | 2024-09-30 02:14:11 |
合計ジャッジ時間 | 11,585 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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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 | 133 ms
88,884 KB |
testcase_01 | AC | 133 ms
88,796 KB |
testcase_02 | AC | 135 ms
89,000 KB |
testcase_03 | AC | 124 ms
85,628 KB |
testcase_04 | AC | 124 ms
85,836 KB |
testcase_05 | AC | 129 ms
85,132 KB |
testcase_06 | AC | 125 ms
85,156 KB |
testcase_07 | AC | 451 ms
109,776 KB |
testcase_08 | AC | 531 ms
105,520 KB |
testcase_09 | AC | 359 ms
106,284 KB |
testcase_10 | AC | 601 ms
109,468 KB |
testcase_11 | AC | 426 ms
102,776 KB |
testcase_12 | AC | 475 ms
106,696 KB |
testcase_13 | AC | 337 ms
104,216 KB |
testcase_14 | AC | 176 ms
99,496 KB |
testcase_15 | AC | 552 ms
110,940 KB |
testcase_16 | AC | 449 ms
111,456 KB |
testcase_17 | AC | 431 ms
105,028 KB |
testcase_18 | AC | 250 ms
98,436 KB |
testcase_19 | AC | 378 ms
105,388 KB |
testcase_20 | AC | 347 ms
108,336 KB |
testcase_21 | AC | 470 ms
106,600 KB |
testcase_22 | AC | 550 ms
110,752 KB |
testcase_23 | AC | 127 ms
85,552 KB |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | AC | 130 ms
85,520 KB |
testcase_27 | AC | 124 ms
85,336 KB |
testcase_28 | WA | - |
testcase_29 | WA | - |
testcase_30 | AC | 136 ms
89,192 KB |
testcase_31 | AC | 128 ms
85,408 KB |
testcase_32 | AC | 125 ms
85,896 KB |
testcase_33 | AC | 136 ms
88,664 KB |
testcase_34 | AC | 136 ms
89,028 KB |
testcase_35 | AC | 137 ms
89,192 KB |
testcase_36 | AC | 126 ms
85,676 KB |
testcase_37 | AC | 125 ms
86,144 KB |
testcase_38 | AC | 136 ms
88,964 KB |
ソースコード
import collections,sys,math,functools,operator,itertools,bisect,heapq,decimal,string,time,random #sys.setrecursionlimit(10**9) #sys.set_int_max_str_digits(0) class UnionFind(): def __init__(self, n): self.n = n self.parents = [-1] * n def find(self, x): if self.parents[x] < 0: return x else: self.parents[x] = self.find(self.parents[x]) return self.parents[x] def union(self, x, y): x = self.find(x) y = self.find(y) if x == y: return if self.parents[x] > self.parents[y]: x, y = y, x self.parents[x] += self.parents[y] self.parents[y] = x def size(self, x): return -self.parents[self.find(x)] def same(self, x, y): return self.find(x) == self.find(y) def members(self, x): root = self.find(x) return [i for i in range(self.n) if self.find(i) == root] def roots(self): return [i for i, x in enumerate(self.parents) if x < 0] def group_count(self): return len(self.roots()) def all_group_members(self): group_members = collections.defaultdict(list) for member in range(self.n): group_members[self.find(member)].append(member) return group_members def __str__(self): return ''.join(f'{r}: {m}' for r, m in self.all_group_members().items()) input = sys.stdin.readline n,m = map(int,input().split()) s,t,k = map(int,input().split()) if n == 1: if k == 0: print('Yes') else: print('No') exit() uf = UnionFind(n) edge = [[] for i in range(n)] for i in range(m): u,v = map(int,input().split()) u-=1 v-=1 edge[u].append(v) edge[v].append(u) uf.union(u,v) s -= 1 t -= 1 if uf.same(s,t) == False: print('Unknown') exit() start = s d = collections.deque() dist = [10**18 for i in range(n)] color = [0 for i in range(n)] d.append(start) dist[start] = 0 while d: now = d.popleft() for i in edge[now]: color[i] = color[now] ^ 1 if dist[i] > dist[now] + 1: dist[i] = dist[now] + 1 d.append(i) if color[s] == color[t]: if k % 2 == 0 and dist[t] <= k: print('Yes') exit() if k % 2 != 0: print('No') exit() if color[s] != color[t]: if k % 2 == 1 and dist[t] <= k: print('Yes') exit() if k % 2 != 1: print('No') exit() print('Unknown')