結果
問題 | No.274 The Wall |
ユーザー | tjake |
提出日時 | 2020-10-18 21:08:52 |
言語 | Python3 (3.12.2 + numpy 1.26.4 + scipy 1.12.0) |
結果 |
AC
|
実行時間 | 556 ms / 2,000 ms |
コード長 | 1,979 bytes |
コンパイル時間 | 155 ms |
コンパイル使用メモリ | 12,800 KB |
実行使用メモリ | 12,288 KB |
最終ジャッジ日時 | 2024-07-21 06:45:10 |
合計ジャッジ時間 | 5,672 ms |
ジャッジサーバーID (参考情報) |
judge1 / 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 | 31 ms
10,880 KB |
testcase_01 | AC | 32 ms
10,880 KB |
testcase_02 | AC | 31 ms
10,880 KB |
testcase_03 | AC | 33 ms
11,136 KB |
testcase_04 | AC | 31 ms
10,752 KB |
testcase_05 | AC | 32 ms
11,008 KB |
testcase_06 | AC | 31 ms
11,008 KB |
testcase_07 | AC | 32 ms
10,880 KB |
testcase_08 | AC | 32 ms
10,880 KB |
testcase_09 | AC | 33 ms
11,008 KB |
testcase_10 | AC | 32 ms
10,880 KB |
testcase_11 | AC | 38 ms
11,520 KB |
testcase_12 | AC | 556 ms
12,032 KB |
testcase_13 | AC | 35 ms
10,880 KB |
testcase_14 | AC | 102 ms
11,264 KB |
testcase_15 | AC | 210 ms
11,648 KB |
testcase_16 | AC | 37 ms
11,520 KB |
testcase_17 | AC | 35 ms
11,520 KB |
testcase_18 | AC | 35 ms
11,520 KB |
testcase_19 | AC | 366 ms
12,032 KB |
testcase_20 | AC | 416 ms
12,288 KB |
testcase_21 | AC | 424 ms
12,288 KB |
testcase_22 | AC | 459 ms
12,032 KB |
testcase_23 | AC | 465 ms
12,032 KB |
testcase_24 | AC | 451 ms
12,288 KB |
testcase_25 | AC | 462 ms
12,160 KB |
ソースコード
import sys from collections import deque readline = sys.stdin.readline write = sys.stdout.write sys.setrecursionlimit(10**5) def scc(N, G, RG): order = [] used = [0]*N def dfs(s): used[s] = 1 for t in G[s]: if not used[t]: dfs(t) order.append(s) for i in range(N): if not used[i]: dfs(i) group = [-1]*N label = 0 order.reverse() for s in order: if group[s] != -1: continue que = deque([s]) group[s] = label while que: v = que.popleft() for w in RG[v]: if group[w] != -1: continue que.append(w) group[w] = label label += 1 return label, group def solve(): N, M = map(int, readline().split()) S = [tuple(map(int, readline().split())) for i in range(N)] G = [[] for i in range(2*N)] RG = [[] for i in range(2*N)] def add_edge(i, neg_i, j, neg_j): if neg_i: i0 = i+N; i1 = i else: i0 = i; i1 = i+N if neg_j: j0 = j+N; j1 = j else: j0 = j; j1 = j+N G[i1].append(j0); RG[j0].append(i1) G[j1].append(i0); RG[i0].append(j1) for i in range(N): li, ri = S[i] for j in range(i+1, N): lj, rj = S[j] p = q = 0 if (li <= rj and lj <= ri): add_edge(i, 0, j, 0) add_edge(i, 1, j, 1) p = 1 if (li <= M-1-lj and M-1-rj <= ri): add_edge(i, 0, j, 1) add_edge(i, 1, j, 0) q = 1 if p and q: write("NO\n") return _, group = scc(2*N, G, RG) ok = 1 for i in range(N): if group[i] == group[i+N]: ok = 0 break if ok: write("YES\n") else: write("NO\n") solve()