結果
問題 | No.679 不思議マーケット |
ユーザー | Coki628 |
提出日時 | 2020-09-02 19:01:10 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 84 ms / 2,000 ms |
コード長 | 2,127 bytes |
コンパイル時間 | 145 ms |
コンパイル使用メモリ | 82,568 KB |
実行使用メモリ | 77,824 KB |
最終ジャッジ日時 | 2024-11-21 16:59:56 |
合計ジャッジ時間 | 1,882 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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 | 42 ms
54,272 KB |
testcase_01 | AC | 44 ms
54,272 KB |
testcase_02 | AC | 47 ms
54,272 KB |
testcase_03 | AC | 84 ms
77,824 KB |
testcase_04 | AC | 80 ms
77,184 KB |
testcase_05 | AC | 77 ms
77,628 KB |
testcase_06 | AC | 59 ms
70,144 KB |
testcase_07 | AC | 49 ms
57,728 KB |
testcase_08 | AC | 71 ms
73,088 KB |
testcase_09 | AC | 45 ms
54,272 KB |
testcase_10 | AC | 56 ms
65,024 KB |
testcase_11 | AC | 49 ms
57,728 KB |
testcase_12 | AC | 62 ms
68,608 KB |
testcase_13 | AC | 64 ms
68,992 KB |
testcase_14 | AC | 63 ms
68,352 KB |
testcase_15 | AC | 50 ms
58,368 KB |
testcase_16 | AC | 44 ms
54,400 KB |
testcase_17 | AC | 42 ms
54,912 KB |
ソースコード
import sys from collections import Counter def input(): return sys.stdin.readline().strip() def list2d(a, b, c): return [[c] * b for i in range(a)] def list3d(a, b, c, d): return [[[d] * c for j in range(b)] for i in range(a)] def list4d(a, b, c, d, e): return [[[[e] * d for j in range(c)] for j in range(b)] for i in range(a)] def ceil(x, y=1): return int(-(-x // y)) def INT(): return int(input()) def MAP(): return map(int, input().split()) def LIST(N=None): return list(MAP()) if N is None else [INT() for i in range(N)] def Yes(): print('Yes') def No(): print('No') def YES(): print('YES') def NO(): print('NO') sys.setrecursionlimit(10**9) INF = 10**19 MOD = 10**9 + 7 EPS = 10**-10 def SCC(N, edges): """ 強連結成分分解 """ nodes1 = [[] for i in range(N)] nodes2 = [[] for i in range(N)] for u, v in edges: nodes1[u].append(v) nodes2[v].append(u) T = [] visited = [False] * N def rec1(cur): visited[cur] = True for nxt in nodes1[cur]: if not visited[nxt]: rec1(nxt) T.append(cur) for u in range(N): if not visited[u]: rec1(u) visited = [False] * N group = [0] * N grpnum = 0 def rec2(cur): group[cur] = grpnum visited[cur] = True for nxt in nodes2[cur]: if not visited[nxt]: rec2(nxt) for u in reversed(T): if not visited[u]: rec2(u) grpnum += 1 return grpnum, group N, M = MAP() edges = [] nodes = [[] for i in range(N)] for i in range(M): g, r = MAP() g -= 1 H = [h-1 for h in LIST()] for h in H: edges.append((g, h)) nodes[g].append(h) grpnum, group = SCC(N, edges) C = Counter(group) ok = [1] * N for i, g in enumerate(group): if C[g] > 1: ok[i] = 0 memo = [-1] * N def dfs(u): if memo[u] != -1: return memo[u] if not ok[u]: memo[u] = 0 return 0 res = 1 for v in nodes[u]: res &= dfs(v) memo[u] = res return res for i in range(N): dfs(i) ans = sum(memo) print(ans)