結果

問題 No.346 チワワ数え上げ問題
ユーザー mnznmnzn
提出日時 2019-12-29 00:08:21
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 45 ms / 2,000 ms
コード長 4,568 bytes
コンパイル時間 946 ms
コンパイル使用メモリ 106,624 KB
実行使用メモリ 27,392 KB
最終ジャッジ日時 2024-10-12 20:05:41
合計ジャッジ時間 3,220 ms
ジャッジサーバーID
（参考情報） 		judge4 / judge5
このコードへのチャレンジ
（要ログイン）

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 24 ms
17,536 KB
testcase_01 AC 23 ms
17,792 KB
testcase_02 AC 24 ms
17,536 KB
testcase_03 AC 24 ms
17,536 KB
testcase_04 AC 24 ms
17,536 KB
testcase_05 AC 23 ms
17,664 KB
testcase_06 AC 23 ms
17,664 KB
testcase_07 AC 23 ms
17,408 KB
testcase_08 AC 23 ms
17,792 KB
testcase_09 AC 24 ms
17,536 KB
testcase_10 AC 43 ms
27,392 KB
testcase_11 AC 35 ms
23,168 KB
testcase_12 AC 40 ms
25,088 KB
testcase_13 AC 34 ms
22,528 KB
testcase_14 AC 24 ms
17,840 KB
testcase_15 AC 37 ms
24,576 KB
testcase_16 AC 39 ms
25,344 KB
testcase_17 AC 43 ms
27,392 KB
testcase_18 AC 44 ms
27,264 KB
testcase_19 AC 41 ms
25,600 KB
testcase_20 AC 42 ms
27,392 KB
testcase_21 AC 44 ms
27,264 KB
testcase_22 AC 45 ms
27,264 KB
testcase_23 AC 24 ms
17,536 KB
testcase_24 AC 23 ms
17,408 KB
testcase_25 AC 24 ms
17,664 KB
権限があれば一括ダウンロードができます
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

diff # 

using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static void Main(string[] args)
    {
        var S = sc.ReadStr();
        var count = new int[S.Length, 26];
        count[0, S[0] - 'a'] = 1;
        for (int i = 1; i < S.Length; i++)
        {
            for (int j = 0; j < 26; j++)
            {
                count[i, j] = count[i - 1, j];
            }
            count[i, S[i] - 'a']++;
        }
        long ans = 0;
        for (int i = 1; i < S.Length - 1; i++)
        {
            if (S[i] == 'w')
            {
                var prev = count[i - 1, 'c' - 'a'];
                var next = count[S.Length - 1, 'w' - 'a'] - count[i, 'w' - 'a'];
                if (prev > 0 && next > 0)
                {
                    ans += prev * next;
                }
            }
        }
        Console.WriteLine(ans);
    }
    static Scanner sc = new Scanner();
}
class Scanner
{
    string[] S = new string[0];
    int Index = 0;
    char[] Separators = new char[] { ' ' };

    public string Next()
    {
        if (this.Index < this.S.Length) return this.S[this.Index++];
        var line = "";
        while (line == "") line = Console.ReadLine();
        this.S = line.Split(this.Separators, StringSplitOptions.RemoveEmptyEntries);
        if (this.S.Length == 0) return this.Next();
        this.Index = 0;
        return this.S[this.Index++];
    }
    public string ReadStr()
    {
        return this.Next();
    }
    public char ReadChar()
    {
        return this.Next()[0];
    }
    public int ReadInt()
    {
        return int.Parse(this.Next());
    }
    public uint ReadUInt()
    {
        return uint.Parse(this.Next());
    }
    public long ReadLong()
    {
        return long.Parse(this.Next());
    }
    public double ReadDouble()
    {
        return double.Parse(this.Next());
    }
    public Tuple<int, int> ReadTup(int add = 0)
    {
        return Tuple.Create(this.ReadInt() + add, this.ReadInt() + add);
    }
    public Tuple<long, long> ReadTupLong(int add = 0)
    {
        return Tuple.Create(this.ReadLong() + add, this.ReadLong() + add);
    }
    public Tuple<int, int, int> ReadTup3(int add = 0)
    {
        return Tuple.Create(this.ReadInt() + add, this.ReadInt() + add, this.ReadInt() + add);
    }
    public Tuple<int, int, int, int> ReadTup4(int add = 0)
    {
        return Tuple.Create(this.ReadInt() + add, this.ReadInt() + add, this.ReadInt() + add, this.ReadInt() + add);
    }
    public int[] ReadIntArray(int n)
    {
        var array = new int[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadInt();
        }
        return array;
    }
    public long[] ReadLongArray(int n)
    {
        var array = new long[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadLong();
        }
        return array;
    }
    public double[] ReadDoubleArray(int n)
    {
        var array = new double[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadDouble();
        }
        return array;
    }
    public char[] ReadCharArray(int n)
    {
        var array = new char[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadChar();
        }
        return array;
    }
    public string[] ReadStrArray(int n)
    {
        var array = new string[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadStr();
        }
        return array;
    }
    public Tuple<long, long>[] ReadTupLongArray(int n, int add = 0)
    {
        var array = new Tuple<long, long>[n];
        for (int i = 0; i < n; i++)
        {
            array[i] = this.ReadTupLong(add);
        }
        return array;
    }
    public Tuple<int, int>[] ReadTupArray(int n, int add = 0)
    {
        var array = new Tuple<int, int>[n];
        for (int i = 0; i < n; i++)
        {
            array[i] = this.ReadTup(add);
        }
        return array;
    }
    public Tuple<int, int, int>[] ReadTup3Array(int n, int add = 0)
    {
        var array = new Tuple<int, int, int>[n];
        for (int i = 0; i < n; i++)
        {
            array[i] = this.ReadTup3(add);
        }
        return array;
    }
    public Tuple<int, int, int, int>[] ReadTup4Array(int n, int add = 0)
    {
        var array = new Tuple<int, int, int, int>[n];
        for (int i = 0; i < n; i++)
        {
            array[i] = this.ReadTup4(add);
        }
        return array;
    }
}
0