結果
問題 | No.515 典型LCP |
ユーザー |
![]() |
提出日時 | 2017-05-05 23:06:32 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 784 ms / 1,000 ms |
コード長 | 7,305 bytes |
コンパイル時間 | 1,600 ms |
コンパイル使用メモリ | 111,360 KB |
実行使用メモリ | 38,144 KB |
最終ジャッジ日時 | 2024-09-14 09:57:08 |
合計ジャッジ時間 | 10,587 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 15 |
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.Linq;using System.Collections.Generic;using Debug = System.Diagnostics.Debug;using StringBuilder = System.Text.StringBuilder;using Number = System.Int64;namespace Program{public class Solver{public void Solve(){var n = sc.Integer();var sb = new StringBuilder();var pos = new int[n];var len = new int[n];for (int i = 0; i < n; i++){pos[i] = sb.Length;var ss = sc.Scan();len[i] = ss.Length;sb.Append(ss);}var s = sb.ToString();var hash = new Hashing(s);var m = sc.Integer();var x = sc.Long();var d = sc.Long();long mod = n;mod *= n - 1;var ans = 0L;for (int k = 0; k < m; k++){var i = x / (n - 1);var j = x % (n - 1);if (i > j) Swap(ref i, ref j);else j++;var lcp = hash.LCP(pos[i], pos[j], Math.Min(len[i], len[j]));ans += lcp;Debug.WriteLine(lcp);x = (x + d) % mod;}IO.Printer.Out.WriteLine(ans);}public IO.StreamScanner sc = new IO.StreamScanner(Console.OpenStandardInput());static T[] Enumerate<T>(int n, Func<int, T> f) { var a = new T[n]; for (int i = 0; i < n; ++i) a[i] = f(i); return a; }static public void Swap<T>(ref T a, ref T b) { var tmp = a; a = b; b = tmp; }}}#region mainstatic class Ex{static public string AsString(this IEnumerable<char> ie) { return new string(System.Linq.Enumerable.ToArray(ie)); }static public string AsJoinedString<T>(this IEnumerable<T> ie, string st = " ") { return string.Join(st, ie); }static public void Main(){var solver = new Program.Solver();solver.Solve();Program.IO.Printer.Out.Flush();}}#endregion#region Exnamespace Program.IO{using System.IO;using System.Text;using System.Globalization;public class Printer: StreamWriter{static Printer() { Out = new Printer(Console.OpenStandardOutput()) { AutoFlush = false }; }public static Printer Out { get; set; }public override IFormatProvider FormatProvider { get { return CultureInfo.InvariantCulture; } }public Printer(System.IO.Stream stream) : base(stream, new UTF8Encoding(false, true)) { }public Printer(System.IO.Stream stream, Encoding encoding) : base(stream, encoding) { }public void Write<T>(string format, T[] source) { base.Write(format, source.OfType<object>().ToArray()); }public void WriteLine<T>(string format, T[] source) { base.WriteLine(format, source.OfType<object>().ToArray()); }}public class StreamScanner{public StreamScanner(Stream stream) { str = stream; }public readonly Stream str;private readonly byte[] buf = new byte[1024];private int len, ptr;public bool isEof = false;public bool IsEndOfStream { get { return isEof; } }private byte read(){if (isEof) return 0;if (ptr >= len) { ptr = 0; if ((len = str.Read(buf, 0, 1024)) <= 0) { isEof = true; return 0; } }return buf[ptr++];}public char Char() { byte b = 0; do b = read(); while ((b < 33 || 126 < b) && !isEof); return (char)b; }public string Scan(){var sb = new StringBuilder();for (var b = Char(); b >= 33 && b <= 126; b = (char)read())sb.Append(b);return sb.ToString();}public string ScanLine(){var sb = new StringBuilder();for (var b = Char(); b != '\n'; b = (char)read())if (b == 0) break;else if (b != '\r') sb.Append(b);return sb.ToString();}public long Long(){if (isEof) return long.MinValue;long ret = 0; byte b = 0; var ng = false;do b = read();while (b != 0 && b != '-' && (b < '0' || '9' < b));if (b == 0) return long.MinValue;if (b == '-') { ng = true; b = read(); }for (; true; b = read()){if (b < '0' || '9' < b)return ng ? -ret : ret;else ret = ret * 10 + b - '0';}}public int Integer() { return (isEof) ? int.MinValue : (int)Long(); }public double Double() { var s = Scan(); return s != "" ? double.Parse(s, CultureInfo.InvariantCulture) : double.NaN; }private T[] enumerate<T>(int n, Func<T> f){var a = new T[n];for (int i = 0; i < n; ++i) a[i] = f();return a;}public char[] Char(int n) { return enumerate(n, Char); }public string[] Scan(int n) { return enumerate(n, Scan); }public double[] Double(int n) { return enumerate(n, Double); }public int[] Integer(int n) { return enumerate(n, Integer); }public long[] Long(int n) { return enumerate(n, Long); }}}#endregion#region Hashingpublic class Hashing{int n;string s;Random rand = new Random();ulong[] modtable = { 1000000007, 1000000009, 1000000021, 1000000033 };ulong band = 100007;ulong MOD = (ulong)1e9 + 7;ulong[] pow, phash;public Hashing(string str){s = str;n = s.Length;pow = new ulong[n + 1];phash = new ulong[n + 1];pow[0] = 1;for (int i = 0; i < n; i++){phash[i + 1] = (s[i] + phash[i] * band);pow[i + 1] = (pow[i] * band);}MOD = modtable[rand.Next() % modtable.Length];band = (ulong)rand.Next(26, (int)MOD);}public ulong Hash(int l, int r){return phash[r] - (phash[l] * pow[r - l]);}//s[il,ir)とs[jl,jr)をconcatしたときにどっちが小さいか比較//weak strict orderなので大丈夫public int CompConcat(int i, int ir, int j, int jr){var ls = Hash(i, ir) * pow[jr - j] + Hash(j, jr);var rs = Hash(j, jr) * pow[ir - i] + Hash(i, ir);if (ls == rs) return 0;var l = 0; var r = ir - i + jr - j + 1;while (l + 1 < r){var m = (l + r) / 2;var lhash = i + m <= ir ? Hash(i, i + m) : Hash(i, ir) * pow[m - (ir - i)] + Hash(j, j + m - (ir - i));var rhash = j + m <= jr ? Hash(j, j + m) : Hash(j, jr) * pow[m - (jr - j)] + Hash(i, i + m - (jr - j));if (lhash == rhash) l = m;else r = m;}var lc = (i + l) < ir ? s[i + l] : s[j + l - (ir - i)];var rc = (j + l) < jr ? s[j + l] : s[i + l - (jr - j)];return lc.CompareTo(rc);}public int LCP(int i, int j, int len){var l = 0; var r = len + 1;while (l + 1 < r){var m = (l + r) / 2;if (Hash(i, i + m) == Hash(j, j + m)) l = m;else r = m;}return l;}}#endregion