結果
問題 | No.155 生放送とBGM |
ユーザー | eitaho |
提出日時 | 2015-02-18 22:23:41 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 3,352 ms / 6,000 ms |
コード長 | 3,550 bytes |
コンパイル時間 | 1,111 ms |
コンパイル使用メモリ | 114,356 KB |
実行使用メモリ | 132,952 KB |
最終ジャッジ日時 | 2024-06-23 21:09:35 |
合計ジャッジ時間 | 14,709 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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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 | 2,196 ms
103,540 KB |
testcase_01 | AC | 2,048 ms
98,960 KB |
testcase_02 | AC | 988 ms
49,140 KB |
testcase_03 | AC | 32 ms
25,268 KB |
testcase_04 | AC | 165 ms
31,180 KB |
testcase_05 | AC | 37 ms
26,336 KB |
testcase_06 | AC | 3,352 ms
132,952 KB |
testcase_07 | AC | 40 ms
26,468 KB |
testcase_08 | AC | 38 ms
28,268 KB |
testcase_09 | AC | 43 ms
26,960 KB |
testcase_10 | AC | 38 ms
26,600 KB |
testcase_11 | AC | 43 ms
29,128 KB |
testcase_12 | AC | 44 ms
26,964 KB |
testcase_13 | AC | 40 ms
28,396 KB |
testcase_14 | AC | 1,771 ms
92,212 KB |
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.Linq; using System.Text; using System.Diagnostics; using System.Collections.Generic; using System.Text.RegularExpressions; using Enu = System.Linq.Enumerable; class Program { void Solve() { int N = reader.Int(), L = reader.Int() * 60; var S = Enu.Range(0, N).Select(i => reader.String()).ToArray(); var Sec = S.Select(s => int.Parse(s.Substring(0, 2)) * 60 + int.Parse(s.Substring(3))).ToArray(); int[] sumSec = new int[N]; for (int i = 0; i < N; i++) sumSec[i] = Sec[i] + (i > 0 ? sumSec[i - 1] : 0); if (sumSec[N - 1] <= L) { Console.WriteLine(N); return; } double[] fact = new double[N + 1]; fact[0] = 1; for (int i = 1; i <= N; i++) fact[i] = fact[i - 1] * i; var dp = new long[N + 1][]; var others = new long[N + 1][]; for (int i = 0; i < dp.Length; i++) { dp[i] = new long[sumSec[N - 1] + 1]; others[i] = new long[sumSec[N - 1] + 1]; } dp[0][0] = others[0][0] = 1; for (int i = 0; i < N; i++) for (int used = i; used >= 0; used--) for (int len = 0; len + Sec[i] <= sumSec[i]; len++) dp[used + 1][len + Sec[i]] += dp[used][len]; double ans = 0; var descending = Sec.OrderByDescending(s => s).ToArray(); var desSum = new int[N]; for (int i = 0; i < N; i++) desSum[i] = descending[i] + (i > 0 ? desSum[i - 1] : 0); for (int i = 0; i < N; i++) for (int used = 0; used < N; used++) for (int len = 0; len <= desSum[used]; len++) { others[used][len] = dp[used][len]; if (used > 0 && len >= Sec[i]) others[used][len] -= others[used - 1][len - Sec[i]]; if (len < L && others[used][len] > 0) ans += others[used][len] * fact[used] * fact[N - used - 1] / fact[N]; } Console.WriteLine(ans); } Reader reader = new Reader(Console.In); static void Main() { new Program().Solve(); } } class Reader { private readonly TextReader reader; private readonly char[] separator = { ' ' }; private readonly StringSplitOptions removeOp = StringSplitOptions.RemoveEmptyEntries; private string[] A = new string[0]; private int i; public Reader(TextReader r) { reader = r; } public bool HasNext() { return Enqueue(); } public string String() { return Dequeue(); } public int Int() { return int.Parse(Dequeue()); } public long Long() { return long.Parse(Dequeue()); } public double Double() { return double.Parse(Dequeue()); } public int[] IntLine() { var s = Line(); return s == "" ? new int[0] : Array.ConvertAll(Split(s), int.Parse); } public int[] IntArray(int N) { return Enu.Range(0, N).Select(i => Int()).ToArray(); } public int[][] IntGrid(int H) { return Enu.Range(0, H).Select(i => IntLine()).ToArray(); } public string[] StringLine(int N) { return Enu.Range(0, N).Select(i => Line()).ToArray(); } public string Line() { return reader.ReadLine().Trim(); } private string[] Split(string s) { return s.Split(separator, removeOp); } private bool Enqueue() { if (i < A.Length) return true; string line = reader.ReadLine(); if (line == null) return false; if (line == "") return Enqueue(); A = Split(line); i = 0; return true; } private string Dequeue() { Enqueue(); return A[i++]; } }