Submission #5889724
Source Code Expand
n, m = [int(item) for item in input().split()] query = [] appeared = set() for i in range(n): line = [int(item) for item in input().split()] appeared.update(line[1:]) query.append(line[1:]) class UnionFind: def __init__(self, n): self.par = [i for i in range(n)] self.size = [1] * n self.rank = [0] * n def find(self, x): if self.par[x] == x: return x else: self.par[x] = self.find(self.par[x]) return self.par[x] def same_check(self, x, y): return self.find(x) == self.find(y) def get_size(self, x): return self.size[self.find(x)] def union(self, x, y): x = self.find(x) y = self.find(y) if self.rank[x] < self.rank[y]: self.par[x] = y else: self.par[y] = x if self.rank[x] == self.rank[y]: self.rank[x] += 1 uf = UnionFind(m) for q in query: if len(q) == 1: continue for item in q[1:]: if not uf.same_check(q[0]-1, item-1): uf.union(q[0]-1, item-1) par = uf.find(appeared.pop() - 1) for item in appeared: if uf.find(item - 1) != par: print("NO") exit() print("YES")
Submission Info
Submission Time | |
---|---|
Task | C - Interpretation |
User | nagitaosu |
Language | Python (3.4.3) |
Score | 400 |
Code Size | 1298 Byte |
Status | AC |
Exec Time | 418 ms |
Memory | 22036 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 | 18 ms | 3064 KB |
01-02.txt | AC | 20 ms | 3188 KB |
01-03.txt | AC | 21 ms | 3188 KB |
01-04.txt | AC | 21 ms | 3064 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 | 320 ms | 14936 KB |
02-02.txt | AC | 370 ms | 15332 KB |
02-03.txt | AC | 279 ms | 12680 KB |
02-04.txt | AC | 418 ms | 19460 KB |
02-05.txt | AC | 378 ms | 15340 KB |
02-06.txt | AC | 404 ms | 19500 KB |
02-07.txt | AC | 404 ms | 16392 KB |
02-08.txt | AC | 382 ms | 13280 KB |
02-09.txt | AC | 401 ms | 22036 KB |
02-10.txt | AC | 329 ms | 16888 KB |
02-11.txt | AC | 311 ms | 16920 KB |
02-12.txt | AC | 345 ms | 16472 KB |
02-13.txt | AC | 336 ms | 16468 KB |
sample-01.txt | AC | 18 ms | 3064 KB |
sample-02.txt | AC | 17 ms | 3064 KB |