Submission #11232216
Source Code Expand
class UnionFind: def __init__(self, n): self.n = n self.p = [e for e in range(n)] self.rank = [0] * n self.size = [1] * n def same(self, u, v): return self.find_set(u) == self.find_set(v) def unite(self, u, v): u = self.find_set(u) v = self.find_set(v) if u == v: return if self.rank[u] > self.rank[v]: self.p[v] = u self.size[u] += self.size[v] else: self.p[u] = v self.size[v] += self.size[u] if self.rank[u] == self.rank[v]: self.rank[v] += 1 def find_set(self, u): if u != self.p[u]: self.p[u] = self.find_set(self.p[u]) return self.p[u] def update_p(self): for u in range(self.n): self.find_set(u) def get_size(self, u): return self.size[self.find_set(u)] n, m = map(int, input().split()) l = [] for _ in range(n): k, *ls = map(int, input().split()) l.append(ls) uf = UnionFind(m) for li in l: for e1, e2 in zip(li, li[1:]): e1 -= 1 e2 -= 1 uf.unite(e1, e2) p = uf.find_set(l[0][0] - 1) ans = "YES" for e, *_ in l: if uf.find_set(e - 1) != p: ans = "NO" print(ans)
Submission Info
Submission Time | |
---|---|
Task | C - Interpretation |
User | shamio |
Language | Python (3.4.3) |
Score | 400 |
Code Size | 1341 Byte |
Status | AC |
Exec Time | 444 ms |
Memory | 29904 KB |
Judge Result
Set Name | sample | dataset1 | dataset2 | ||||||
---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 200 / 200 | 200 / 200 | ||||||
Status |
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Set Name | Test Cases |
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sample | sample-01.txt, sample-02.txt |
dataset1 | sample-01.txt, sample-02.txt, 01-01.txt, 01-02.txt, 01-03.txt, 01-04.txt, 01-05.txt, 01-06.txt, 01-07.txt, 01-08.txt, 01-09.txt, 01-10.txt |
dataset2 | sample-01.txt, sample-02.txt, 01-01.txt, 01-02.txt, 01-03.txt, 01-04.txt, 01-05.txt, 01-06.txt, 01-07.txt, 01-08.txt, 01-09.txt, 01-10.txt, 02-01.txt, 02-02.txt, 02-03.txt, 02-04.txt, 02-05.txt, 02-06.txt, 02-07.txt, 02-08.txt, 02-09.txt, 02-10.txt, 02-11.txt, 02-12.txt, 02-13.txt, sample-01.txt, sample-02.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
01-01.txt | AC | 17 ms | 3064 KB |
01-02.txt | AC | 19 ms | 3188 KB |
01-03.txt | AC | 21 ms | 3188 KB |
01-04.txt | AC | 21 ms | 3188 KB |
01-05.txt | AC | 21 ms | 3188 KB |
01-06.txt | AC | 21 ms | 3188 KB |
01-07.txt | AC | 21 ms | 3188 KB |
01-08.txt | AC | 21 ms | 3188 KB |
01-09.txt | AC | 21 ms | 3188 KB |
01-10.txt | AC | 21 ms | 3316 KB |
02-01.txt | AC | 235 ms | 13232 KB |
02-02.txt | AC | 444 ms | 22972 KB |
02-03.txt | AC | 239 ms | 10996 KB |
02-04.txt | AC | 398 ms | 21880 KB |
02-05.txt | AC | 414 ms | 21076 KB |
02-06.txt | AC | 399 ms | 21908 KB |
02-07.txt | AC | 443 ms | 22876 KB |
02-08.txt | AC | 405 ms | 20980 KB |
02-09.txt | AC | 419 ms | 29904 KB |
02-10.txt | AC | 343 ms | 18696 KB |
02-11.txt | AC | 334 ms | 18724 KB |
02-12.txt | AC | 323 ms | 18264 KB |
02-13.txt | AC | 328 ms | 18232 KB |
sample-01.txt | AC | 17 ms | 3064 KB |
sample-02.txt | AC | 17 ms | 3064 KB |