結果
問題 | No.2780 The Bottle Imp |
ユーザー | kakel-san |
提出日時 | 2024-06-07 22:22:21 |
言語 | C# (.NET 8.0.203) |
結果 |
AC
|
実行時間 | 241 ms / 2,000 ms |
コード長 | 5,106 bytes |
コンパイル時間 | 12,382 ms |
コンパイル使用メモリ | 169,540 KB |
実行使用メモリ | 191,712 KB |
最終ジャッジ日時 | 2024-06-08 10:33:22 |
合計ジャッジ時間 | 19,680 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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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 | 65 ms
30,332 KB |
testcase_01 | AC | 64 ms
30,720 KB |
testcase_02 | AC | 64 ms
30,720 KB |
testcase_03 | AC | 65 ms
30,720 KB |
testcase_04 | AC | 63 ms
30,208 KB |
testcase_05 | AC | 62 ms
30,844 KB |
testcase_06 | AC | 63 ms
30,848 KB |
testcase_07 | AC | 148 ms
50,048 KB |
testcase_08 | AC | 148 ms
50,016 KB |
testcase_09 | AC | 151 ms
50,304 KB |
testcase_10 | AC | 144 ms
49,920 KB |
testcase_11 | AC | 144 ms
49,788 KB |
testcase_12 | AC | 208 ms
62,876 KB |
testcase_13 | AC | 210 ms
62,972 KB |
testcase_14 | AC | 105 ms
43,136 KB |
testcase_15 | AC | 111 ms
43,008 KB |
testcase_16 | AC | 104 ms
42,880 KB |
testcase_17 | AC | 105 ms
43,008 KB |
testcase_18 | AC | 106 ms
43,136 KB |
testcase_19 | AC | 105 ms
42,876 KB |
testcase_20 | AC | 106 ms
43,008 KB |
testcase_21 | AC | 105 ms
42,876 KB |
testcase_22 | AC | 97 ms
39,936 KB |
testcase_23 | AC | 102 ms
42,200 KB |
testcase_24 | AC | 140 ms
52,864 KB |
testcase_25 | AC | 178 ms
55,808 KB |
testcase_26 | AC | 128 ms
48,128 KB |
testcase_27 | AC | 128 ms
48,128 KB |
testcase_28 | AC | 125 ms
47,832 KB |
testcase_29 | AC | 119 ms
51,200 KB |
testcase_30 | AC | 128 ms
52,320 KB |
testcase_31 | AC | 179 ms
58,592 KB |
testcase_32 | AC | 89 ms
38,400 KB |
testcase_33 | AC | 211 ms
82,304 KB |
testcase_34 | AC | 241 ms
84,096 KB |
testcase_35 | AC | 86 ms
36,596 KB |
testcase_36 | AC | 66 ms
30,208 KB |
testcase_37 | AC | 64 ms
30,424 KB |
testcase_38 | AC | 83 ms
36,608 KB |
testcase_39 | AC | 161 ms
62,684 KB |
testcase_40 | AC | 164 ms
62,516 KB |
testcase_41 | AC | 164 ms
62,848 KB |
testcase_42 | AC | 63 ms
30,964 KB |
testcase_43 | AC | 62 ms
191,712 KB |
コンパイルメッセージ
復元対象のプロジェクトを決定しています... /home/judge/data/code/main.csproj を復元しました (117 ms)。 MSBuild のバージョン 17.9.6+a4ecab324 (.NET) main -> /home/judge/data/code/bin/Release/net8.0/main.dll main -> /home/judge/data/code/bin/Release/net8.0/publish/
ソースコード
using System; using static System.Console; using System.Linq; using System.Collections.Generic; class Program { static int NN => int.Parse(ReadLine()); static int[] NList => ReadLine().Split().Select(int.Parse).ToArray(); static int[][] NArr(long n) => Enumerable.Repeat(0, (int)n).Select(_ => NList).ToArray(); public static void Main() { Solve(); } static void Solve() { var n = NN; var map = NArr(n); WriteLine(Bottle(n, map) ? "Yes" : "No"); } static bool Bottle(int n, int[][] map) { var g = new SCCGraph(n); for (var i = 0; i < n; ++i) for (var j = 1; j < map[i].Length; ++j) { g.AddEdge(i, map[i][j] - 1); } var scc = g.SCC(); var gid = new int[n]; for (var i = 0; i < scc.Length; ++i) foreach (var s in scc[i]) gid[s] = i; var tree = new List<int>[scc.Length]; for (var i = 0; i < tree.Length; ++i) tree[i] = new List<int>(); var refs = new int[scc.Length]; for (var i = 0; i < n; ++i) for (var j = 1; j < map[i].Length; ++j) { if (gid[i] != gid[map[i][j] - 1]) { tree[gid[i]].Add(gid[map[i][j] - 1]); ++refs[gid[map[i][j] - 1]]; } } if (refs[gid[0]] > 0) { return false; } var list = new List<int>(); var q = new Queue<int>(); for (var i = 0; i < refs.Length; ++i) if (refs[i] == 0) { list.Add(i); q.Enqueue(i); } if (q.Count > 1) { return false; } while (q.Count > 0) { var cur = q.Dequeue(); foreach (var next in tree[cur]) { --refs[next]; if (refs[next] == 0) { list.Add(next); q.Enqueue(next); if (q.Count > 1) { return false; } } } } return list.Count == scc.Length; } class SCCGraph { private int _n; private List<(int from, int to)> edges; public SCCGraph(int n) { _n = n; edges = new List<(int, int)>(); } public int NumVertices() { return _n; } public void AddEdge(int from, int to) { edges.Add((from, to )); } public (int, int[]) SCCIds() { var g = new CSR<int>(_n, edges); var nowOrd = 0; var groupNum = 0; var visited = new List<int>(_n); var low = new int[_n]; var ord = Enumerable.Repeat(-1, _n).ToArray(); var ids = new int[_n]; void DFS(int v) { low[v] = ord[v] = nowOrd++; visited.Add(v); for (var i = g.Start[v]; i < g.Start[v + 1]; ++i) { var to = g.EList[i]; if (ord[to] == -1) { DFS(to); low[v] = Math.Min(low[v], low[to]); } else low[v] = Math.Min(low[v], ord[to]); } if (low[v] == ord[v]) { while (true) { var u = visited.Last(); visited.RemoveAt(visited.Count - 1); ord[u] = _n; ids[u] = groupNum; if (u == v) break; } ++groupNum; } } for (var i = 0; i < _n; ++i) if (ord[i] == -1) DFS(i); for (var i = 0; i < ids.Length; ++i) ids[i] = groupNum - 1 - ids[i]; return (groupNum, ids); } public List<int>[] SCC() { var (groupNum, list) = SCCIds(); var counts = new int[groupNum]; foreach (var x in list) ++counts[x]; var groups = new List<int>[groupNum]; for (var i = 0; i < groups.Length; ++i) groups[i] = new List<int>(counts[i]); for (var i = 0; i < _n; ++i) groups[list[i]].Add(i); return groups; } } // 有向辺のリスト class CSR<E> { public int[] Start { get; private set; } public E[] EList { get; private set; } public CSR(int n, List<(int, E)> edges) { Start = new int[n + 1]; EList = new E[edges.Count]; foreach (var e in edges) ++Start[e.Item1 + 1]; for (var i = 1; i <= n; ++i) Start[i] += Start[i - 1]; var counter = (int[])Start.Clone(); foreach (var e in edges) { EList[counter[e.Item1]++] = e.Item2; } } } }