Submission #8445825
Source Code Expand
class UnionFind(): def __init__(self, n): self.par = [i for i in range(n)] self.rank = [0 for i in range(n)] def find(self, x): if self.par[x] == x: return x self.par[x] = self.find(self.par[x]) return self.par[x] def unite(self, x, y): x = self.find(x) y = self.find(y) if x == y: return if self.rank[x] < self.rank[y]: self.par[x] = y elif self.rank[y] < self.rank[x]: self.par[y] = x else: self.par[x] = y self.rank[y] += 1 return N, M = map(int, input().split()) p = [int(i) for i in input().split()] uf = UnionFind(N) for i in range(M): x, y = map(int, input().split()) uf.unite(x-1, y-1) ans = 0 for i in range(N): if uf.find(i) == uf.find(p[i]-1): ans += 1 print(ans)
Submission Info
Submission Time | |
---|---|
Task | D - Equals |
User | b1u3 |
Language | Python (3.4.3) |
Score | 400 |
Code Size | 916 Byte |
Status | AC |
Exec Time | 701 ms |
Memory | 13812 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 400 / 400 | ||||
Status |
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Set Name | Test Cases |
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Sample | 0_000.txt, 0_001.txt, 0_002.txt, 0_003.txt |
All | 0_000.txt, 0_001.txt, 0_002.txt, 0_003.txt, 1_004.txt, 1_005.txt, 1_006.txt, 1_007.txt, 1_008.txt, 1_009.txt, 1_010.txt, 1_011.txt, 1_012.txt, 1_013.txt, 1_014.txt, 1_015.txt, 1_016.txt, 1_017.txt, 1_018.txt, 1_019.txt, 1_020.txt, 1_021.txt, 1_022.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
0_000.txt | AC | 17 ms | 3064 KB |
0_001.txt | AC | 17 ms | 3064 KB |
0_002.txt | AC | 18 ms | 3064 KB |
0_003.txt | AC | 17 ms | 3064 KB |
1_004.txt | AC | 435 ms | 3064 KB |
1_005.txt | AC | 536 ms | 13812 KB |
1_006.txt | AC | 701 ms | 13812 KB |
1_007.txt | AC | 18 ms | 3064 KB |
1_008.txt | AC | 18 ms | 3064 KB |
1_009.txt | AC | 18 ms | 3064 KB |
1_010.txt | AC | 18 ms | 3064 KB |
1_011.txt | AC | 17 ms | 3064 KB |
1_012.txt | AC | 18 ms | 3064 KB |
1_013.txt | AC | 21 ms | 3064 KB |
1_014.txt | AC | 39 ms | 3064 KB |
1_015.txt | AC | 18 ms | 3064 KB |
1_016.txt | AC | 19 ms | 3064 KB |
1_017.txt | AC | 24 ms | 3064 KB |
1_018.txt | AC | 397 ms | 3064 KB |
1_019.txt | AC | 110 ms | 13808 KB |
1_020.txt | AC | 111 ms | 13812 KB |
1_021.txt | AC | 122 ms | 13812 KB |
1_022.txt | AC | 638 ms | 13812 KB |