結果
| 問題 |
No.422 文字列変更 (Hard)
|
| コンテスト | |
| ユーザー |
eitaho
|
| 提出日時 | 2016-09-10 00:10:51 |
| 言語 | C#(csc) (csc 3.9.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 5,617 bytes |
| コンパイル時間 | 2,582 ms |
| コンパイル使用メモリ | 112,384 KB |
| 実行使用メモリ | 88,576 KB |
| 最終ジャッジ日時 | 2024-11-17 06:43:03 |
| 合計ジャッジ時間 | 11,681 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | WA * 1 |
| other | AC * 2 WA * 14 |
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.Text.RegularExpressions;
using System.Collections.Generic;
using System.Diagnostics;
using Enu = System.Linq.Enumerable;
public class Program
{
static readonly int INF = (int)1e9;
static readonly int Replace = 5;
static readonly int FirstAddDelete = 9;
static readonly int AddDelete = 2;
public void Solve()
{
int N = Reader.Int(), M = Reader.Int();
var S = Reader.String();
var T = Reader.String();
Func<int, int> Cost = len => 9 + (len - 1) * 2;
var minCost = new int[N + 1, M + 1, 3];
var prevSi = new int[N + 1, M + 1, 3];
var prevTi = new int[N + 1, M + 1, 3];
var prevType = new int[N + 1, M + 1, 3];
Fill(minCost, INF);
minCost[0, 0, 0] = 0;
for (int si = 0; si <= N; si++)
for (int ti = 0; ti <= M; ti++)
for (int type = 0; type < 3 && (si < N || ti < M); type++)
{
Action<int, int, int, int> Update = (nsi, nti, ntype, cost) =>
{
if (cost >= minCost[nsi, nti, ntype]) return;
minCost[nsi, nti, ntype] = cost;
prevSi[nsi, nti, ntype] = si;
prevTi[nsi, nti, ntype] = ti;
prevType[nsi, nti, ntype] = type;
};
int currCost = minCost[si, ti, type];
if (si < N)
{
// replace
if (ti < M)
{
if (si < N)
Update(si + 1, ti + 1, 0, currCost + (S[si] == T[ti] ? 0 : Replace));
}
// delete
Update(si + 1, ti, 2, currCost + FirstAddDelete);
if (type == 2)
Update(si + 1, ti, 2, currCost + AddDelete);
}
if (ti < M)
{
// add
Update(si, ti + 1, 1, currCost + FirstAddDelete);
if (type == 1)
Update(si, ti + 1, 1, currCost + AddDelete);
}
}
int ans = int.MaxValue, Si = N, Ti = M, AnsType = 0;
for (int type = 0; type < 3; type++)
if (minCost[N, M, type] < ans)
{
ans = minCost[N, M, type];
AnsType = type;
}
var ansS = new StringBuilder();
var ansT = new StringBuilder();
while (Si > 0 || Ti > 0)
{
int nsi = prevSi[Si, Ti, AnsType];
int nti = prevTi[Si, Ti, AnsType];
int ntype = prevType[Si, Ti, AnsType];
switch (AnsType)
{
case 0:
ansS.Insert(0, T[nti]);
ansT.Insert(0, T[nti]);
break;
case 1:
ansS.Insert(0, "-");
ansT.Insert(0, T[nti]);
break;
case 2:
ansS.Insert(0, "-");
ansT.Insert(0, S[nsi]);
break;
}
Si = nsi;
Ti = nti;
AnsType = ntype;
}
Console.WriteLine(ans);
Console.WriteLine(ansS);
Console.WriteLine(ansT);
Console.ReadLine();
}
void Fill<T>(T[, ,] X, T val)
{
int A = X.GetLength(0), B = X.GetLength(1), C = X.GetLength(2);
for (int a = 0; a < A; a++)
for (int b = 0; b < B; b++)
for (int c = 0; c < C; c++)
X[a, b, c] = val;
}
}
class Entry { static void Main() { new Program().Solve(); } }
class Reader
{
static TextReader reader = Console.In;
static readonly char[] separator = { ' ' };
static readonly StringSplitOptions op = StringSplitOptions.RemoveEmptyEntries;
static string[] A = new string[0];
static int i;
static void Init() { A = new string[0]; }
public static void Set(TextReader r) { reader = r; Init(); }
public static void Set(string file) { reader = new StreamReader(file); Init(); }
public static bool HasNext() { return CheckNext(); }
public static string String() { return Next(); }
public static int Int() { return int.Parse(Next()); }
public static long Long() { return long.Parse(Next()); }
public static double Double() { return double.Parse(Next()); }
public static int[] IntLine() { return Array.ConvertAll(Split(Line()), int.Parse); }
public static int[] IntArray(int N) { return Range(N, Int); }
public static int[][] IntTable(int H) { return Range(H, IntLine); }
public static string[] StringArray(int N) { return Range(N, Next); }
public static string[][] StringTable(int N) { return Range(N, () => Split(Line())); }
public static string Line() { return reader.ReadLine().Trim(); }
static string[] Split(string s) { return s.Split(separator, op); }
static T[] Range<T>(int N, Func<T> f) { var r = new T[N]; for (int i = 0; i < N; r[i++] = f()) ; return r; }
static string Next() { CheckNext(); return A[i++]; }
static bool CheckNext()
{
if (i < A.Length) return true;
string line = reader.ReadLine();
if (line == null) return false;
if (line == "") return CheckNext();
A = Split(line);
i = 0;
return true;
}
}
eitaho