結果
| 問題 | No.515 典型LCP |
| ユーザー |
 紙ぺーぱー
|
| 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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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 | 520 ms
38,144 KB |
| testcase_01 | AC | 521 ms
38,016 KB |
| testcase_02 | AC | 555 ms
37,504 KB |
| testcase_03 | AC | 24 ms
18,432 KB |
| testcase_04 | AC | 24 ms
18,432 KB |
| testcase_05 | AC | 628 ms
36,992 KB |
| testcase_06 | AC | 633 ms
37,120 KB |
| testcase_07 | AC | 625 ms
36,864 KB |
| testcase_08 | AC | 626 ms
36,992 KB |
| testcase_09 | AC | 523 ms
36,992 KB |
| testcase_10 | AC | 265 ms
36,864 KB |
| testcase_11 | AC | 254 ms
36,992 KB |
| testcase_12 | AC | 256 ms
37,120 KB |
| testcase_13 | AC | 569 ms
37,888 KB |
| testcase_14 | AC | 52 ms
37,376 KB |
| testcase_15 | AC | 670 ms
36,864 KB |
| testcase_16 | AC | 784 ms
36,736 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.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 main
static 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 Ex
namespace 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 Hashing
public 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