#370889 (C#(csc)) No.52 よくある文字列の問題

• 問題: No.52 よくある文字列の問題
• ユーザー: eiken7kyuu
• 提出日時: 2019-08-19 22:05:08
• 言語: C#(csc) (csc 3.9.0)
• 結果: AC
• 実行時間: 27 ms / 5,000 ms
• コード長: 3,436 bytes
• コンパイル時間: 879 ms
• コンパイル使用メモリ: 115,756 KB
• 実行使用メモリ: 19,584 KB
• 最終ジャッジ日時: 2024-10-05 06:15:54
• 合計ジャッジ時間: 1,763 ms
• ジャッジサーバーID （参考情報）: judge5 / judge1

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	23 ms; 19,200 KB
testcase_01	AC	23 ms; 19,328 KB
testcase_02	AC	22 ms; 19,328 KB
testcase_03	AC	22 ms; 19,328 KB
testcase_04	AC	22 ms; 19,584 KB
testcase_05	AC	23 ms; 19,456 KB
testcase_06	AC	27 ms; 19,456 KB
testcase_07	AC	27 ms; 19,456 KB
testcase_08	AC	26 ms; 19,456 KB
testcase_09	AC	24 ms; 19,200 KB
testcase_10	AC	24 ms; 19,456 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.Collections.Generic;
using System.Linq;
using static System.Math;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            A();
        }

        static void A()
        {
            Action<string, string> func = null;
            var memo = new HashSet<string>();
            var ans = 0;
            func = (s, newStr) =>
            {
                if (s.Length == 0 && !memo.Contains(newStr))
                {
                    memo.Add(newStr);
                    ans++;
                }

                if (s.Length == 1)
                    func(s.Slice(1), newStr + s.Slice(1));

                if (s.Length > 1)
                    func(s.Slice(1), newStr + s.Slice(0, 1));

                if (s.Length > 1)
                    func(s.Slice(0, s.Length - 1), newStr + s.Slice(s.Length - 1, s.Length));
            };

            func(Read(), "");
            Println(ans);
        }

        static List<long> ReadLines(long n)
        {
            var l = new List<long>();
            for (long i = 0; i < n; i++)
            {
                l.Add(ReadLong());
            }
            return l;
        }

        static void YESOrNO(bool e) => Println(e ? "YES" : "NO");

        static void YesOrNo(bool e) => Println(e ? "Yes" : "No");

        static IEnumerable<int> Range(int start, int stop)
        {
            if (start < 0 || stop < 0 || start > stop || (start <= 0 && stop <= 0))
                return new List<int>();

            return Enumerable.Range(start, stop - start);
        }

        static bool IsDigit(string str)
        {
            var i = 0;
            return int.TryParse(str, out i);
        }

        static int SumDigits(long num)
        {
            return num.ToString().Select(x => x.ToString()).Sum(int.Parse);
        }

        static int[] ToIntArray(string str)
        {
            return str.Select(x => x.ToString()).Select(int.Parse).ToArray();
        }

        static long Gcd(long a, long b) => b == 0 ? a : Gcd(b, a % b);
        static long Lcm(long a, long b) => a / Gcd(a, b) * b;

        static bool IsPrime(int x)
        {
            if (x <= 1 || (x != 2 && x % 2 == 0)) return false;
            if (x == 2) return true;

            for (int i = 3; i < x; i += 2)
                if (x % i == 0) return false;

            return true;
        }

        static string Read() => Console.ReadLine();
        static int ReadInt() => int.Parse(Read());
        static long ReadLong() => long.Parse(Read());

        static List<string> ReadSplit() => Read().Split().ToList();
        static List<int> ReadSplitInt() => Read().Split().Select(int.Parse).ToList();
        static List<long> ReadSplitLong() => Read().Split().Select(long.Parse).ToList();

        static void Print(object value) => Console.Write(value.ToString());
        static void Println(object value) => Console.WriteLine(value.ToString());
        static string Join<T>(IEnumerable<T> list) => string.Join("", list);
    }

    public static class MyExtensions
    {
        public static string Slice(this string str, int start = 0, int stop = 0)
        {
            if (start > str.Length || stop > str.Length || start < 0 || stop < 0)
                return "";

            if (stop == 0) stop = str.Length;
            return str.Substring(start, stop - start);
        }
    }
}