結果
問題 | No.1390 Get together |
ユーザー | chineristAC |
提出日時 | 2020-09-08 22:03:47 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 355 ms / 2,000 ms |
コード長 | 1,630 bytes |
コンパイル時間 | 370 ms |
コンパイル使用メモリ | 82,232 KB |
実行使用メモリ | 106,552 KB |
最終ジャッジ日時 | 2024-05-07 16:11:15 |
合計ジャッジ時間 | 7,946 ms |
ジャッジサーバーID (参考情報) |
judge3 / 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 | 37 ms
53,700 KB |
testcase_01 | AC | 38 ms
54,608 KB |
testcase_02 | AC | 35 ms
52,948 KB |
testcase_03 | AC | 108 ms
78,136 KB |
testcase_04 | AC | 104 ms
77,652 KB |
testcase_05 | AC | 105 ms
77,776 KB |
testcase_06 | AC | 102 ms
77,828 KB |
testcase_07 | AC | 95 ms
77,588 KB |
testcase_08 | AC | 100 ms
77,528 KB |
testcase_09 | AC | 102 ms
78,276 KB |
testcase_10 | AC | 36 ms
53,240 KB |
testcase_11 | AC | 38 ms
53,288 KB |
testcase_12 | AC | 35 ms
52,884 KB |
testcase_13 | AC | 35 ms
53,544 KB |
testcase_14 | AC | 35 ms
52,704 KB |
testcase_15 | AC | 38 ms
53,484 KB |
testcase_16 | AC | 251 ms
101,708 KB |
testcase_17 | AC | 224 ms
105,720 KB |
testcase_18 | AC | 252 ms
106,552 KB |
testcase_19 | AC | 342 ms
101,832 KB |
testcase_20 | AC | 321 ms
97,768 KB |
testcase_21 | AC | 321 ms
97,668 KB |
testcase_22 | AC | 324 ms
103,128 KB |
testcase_23 | AC | 334 ms
103,268 KB |
testcase_24 | AC | 336 ms
102,772 KB |
testcase_25 | AC | 341 ms
101,956 KB |
testcase_26 | AC | 352 ms
102,756 KB |
testcase_27 | AC | 355 ms
102,564 KB |
testcase_28 | AC | 351 ms
102,280 KB |
testcase_29 | AC | 339 ms
102,008 KB |
testcase_30 | AC | 338 ms
102,516 KB |
testcase_31 | AC | 350 ms
102,184 KB |
ソースコード
class UnionFindVerSize(): def __init__(self, N): self._parent = [n for n in range(0, N)] self._size = [1] * N def find_root(self, x): if self._parent[x] == x: return x self._parent[x] = self.find_root(self._parent[x]) return self._parent[x] def unite(self, x, y): gx = self.find_root(x) gy = self.find_root(y) if gx == gy: return if self._size[gx] < self._size[gy]: self._parent[gx] = gy self._size[gy] += self._size[gx] else: self._parent[gy] = gx self._size[gx] += self._size[gy] def get_size(self, x): return self._size[self.find_root(x)] def is_same_group(self, x, y): return self.find_root(x) == self.find_root(y) def calc_group_num(self): N = len(self._parent) ans = 0 for i in range(N): if self.find_root(i) == i: ans += 1 return ans import sys N,M = map(int,input().split()) assert(1<=N<=2*10**5) assert(1<=M<=2*10**5) b = [-1]*N c = [-1]*N for i in range(N): b[i],c[i] = map(int,input().split()) assert(all(1<=b[i]<=M for i in range(N))) assert(all(1<=c[i]<=N for i in range(N))) box = [[] for i in range(M+1)] color = [0 for i in range(N)] for i in range(N): box[b[i]].append(c[i]-1) color[c[i]-1] += 1 uf = UnionFindVerSize(N) for i in range(M+1): for v in box[i]: uf.unite(v,box[i][0]) none_color = sum(int(color[i]==0) for i in range(N)) connected = uf.calc_group_num() - none_color B = sum(int(box[i]!=[]) for i in range(M+1)) print(B-connected)