結果
問題 | No.196 典型DP (1) |
ユーザー | EmKjp |
提出日時 | 2015-04-30 00:04:39 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 3,826 bytes |
コンパイル時間 | 2,839 ms |
コンパイル使用メモリ | 114,364 KB |
実行使用メモリ | 60,188 KB |
最終ジャッジ日時 | 2024-07-05 16:51:05 |
合計ジャッジ時間 | 10,074 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 | 30 ms
24,576 KB |
testcase_01 | AC | 29 ms
19,072 KB |
testcase_02 | AC | 29 ms
19,072 KB |
testcase_03 | AC | 30 ms
19,072 KB |
testcase_04 | AC | 29 ms
19,072 KB |
testcase_05 | AC | 31 ms
18,816 KB |
testcase_06 | AC | 30 ms
19,200 KB |
testcase_07 | AC | 29 ms
19,072 KB |
testcase_08 | AC | 29 ms
19,328 KB |
testcase_09 | AC | 30 ms
19,072 KB |
testcase_10 | AC | 30 ms
19,200 KB |
testcase_11 | AC | 32 ms
19,072 KB |
testcase_12 | AC | 31 ms
19,072 KB |
testcase_13 | AC | 30 ms
19,072 KB |
testcase_14 | AC | 31 ms
19,200 KB |
testcase_15 | AC | 49 ms
20,352 KB |
testcase_16 | AC | 147 ms
25,728 KB |
testcase_17 | AC | 266 ms
27,520 KB |
testcase_18 | AC | 529 ms
33,408 KB |
testcase_19 | AC | 712 ms
34,688 KB |
testcase_20 | AC | 878 ms
43,392 KB |
testcase_21 | AC | 1,158 ms
43,520 KB |
testcase_22 | AC | 863 ms
43,392 KB |
testcase_23 | TLE | - |
testcase_24 | -- | - |
testcase_25 | -- | - |
testcase_26 | -- | - |
testcase_27 | -- | - |
testcase_28 | -- | - |
testcase_29 | -- | - |
testcase_30 | -- | - |
testcase_31 | -- | - |
testcase_32 | -- | - |
testcase_33 | -- | - |
testcase_34 | -- | - |
testcase_35 | -- | - |
testcase_36 | -- | - |
testcase_37 | -- | - |
testcase_38 | -- | - |
testcase_39 | -- | - |
testcase_40 | -- | - |
testcase_41 | -- | - |
testcase_42 | -- | - |
testcase_43 | -- | - |
コンパイルメッセージ
Microsoft (R) Visual C# Compiler version 3.9.0-6.21124.20 (db94f4cc) Copyright (C) Microsoft Corporation. All rights reserved.
ソースコード
using System; using System.IO; using System.Collections.Generic; using System.Globalization; using System.Linq; using System.Text; partial class Solver { const int mod = 1000000007; int[][] memo = new int[2001][]; int[] size = new int[2001]; int[] dfs(List<List<int>> adj, int pos, int parent = -1) { int n = adj.Count; if (memo[pos] != null) return memo[pos]; int[] ret = new int[n + 1]; ret[0] = 1; size[pos] = 1; foreach (var child in adj[pos]) { if (child == parent) continue; var sub = dfs(adj, child, pos); size[pos] += size[child]; int[] next = new int[n + 1]; for (int i = 0; i <= n; i++) { if (ret[i] == 0) continue; for (int j = n - i; j >= 0; j--) { next[i + j] += (int)(1L * ret[i] * sub[j] % mod); next[i + j] %= mod; } } ret = next; } ret[size[pos]] = 1; return memo[pos] = ret; } public void Run() { int N = ni(); int K = ni(); var adj = Enumerable.Range(0, N).Select(_ => new List<int>()).ToList(); for (int i = 0; i < N - 1; i++) { int a = ni(); int b = ni(); adj[a].Add(b); adj[b].Add(a); } var result = dfs(adj, 0); cout.WriteLine(result[K]); } } // PREWRITEN CODE BEGINS FROM HERE partial class Solver : Scanner { public static void Main(string[] args) { new Solver(Console.In, Console.Out).Run(); } TextReader cin; TextWriter cout; public Solver(TextReader reader, TextWriter writer) : base(reader) { this.cin = reader; this.cout = writer; } public Solver(string input, TextWriter writer) : this(new StringReader(input), writer) { } public int ni() { return NextInt(); } public long nl() { return NextLong(); } public string ns() { return Next(); } } public class Scanner { private TextReader Reader; private Queue<String> TokenQueue = new Queue<string>(); private CultureInfo ci = CultureInfo.InvariantCulture; public Scanner() : this(Console.In) { } public Scanner(TextReader reader) { this.Reader = reader; } public int NextInt() { return Int32.Parse(Next(), ci); } public long NextLong() { return Int64.Parse(Next(), ci); } public double NextDouble() { return double.Parse(Next(), ci); } public string[] NextArray(int size) { var array = new string[size]; for (int i = 0; i < size; i++) array[i] = Next(); return array; } public int[] NextIntArray(int size) { var array = new int[size]; for (int i = 0; i < size; i++) array[i] = NextInt(); return array; } public long[] NextLongArray(int size) { var array = new long[size]; for (int i = 0; i < size; i++) array[i] = NextLong(); return array; } public String Next() { if (TokenQueue.Count == 0) { if (!StockTokens()) throw new InvalidOperationException(); } return TokenQueue.Dequeue(); } public bool HasNext() { if (TokenQueue.Count > 0) return true; return StockTokens(); } private bool StockTokens() { while (true) { var line = Reader.ReadLine(); if (line == null) return false; var tokens = line.Trim().Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries); if (tokens.Length == 0) continue; foreach (var token in tokens) TokenQueue.Enqueue(token); return true; } } }