結果

問題 No.346 チワワ数え上げ問題
ユーザー りあんりあん
提出日時 2016-03-06 02:35:32
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 26 ms / 2,000 ms
コード長 6,615 bytes
コンパイル時間 2,643 ms
コンパイル使用メモリ 115,840 KB
実行使用メモリ 25,768 KB
最終ジャッジ日時 2024-09-24 14:34:21
合計ジャッジ時間 3,007 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge3
このコードへのチャレンジ
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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 24 ms
25,572 KB
testcase_01 AC 23 ms
23,568 KB
testcase_02 AC 24 ms
25,552 KB
testcase_03 AC 24 ms
23,560 KB
testcase_04 AC 24 ms
23,728 KB
testcase_05 AC 24 ms
25,680 KB
testcase_06 AC 24 ms
23,728 KB
testcase_07 AC 24 ms
25,612 KB
testcase_08 AC 24 ms
23,852 KB
testcase_09 AC 24 ms
23,852 KB
testcase_10 AC 24 ms
21,276 KB
testcase_11 AC 25 ms
25,628 KB
testcase_12 AC 25 ms
23,836 KB
testcase_13 AC 24 ms
23,388 KB
testcase_14 AC 24 ms
25,536 KB
testcase_15 AC 25 ms
23,460 KB
testcase_16 AC 24 ms
23,452 KB
testcase_17 AC 26 ms
25,740 KB
testcase_18 AC 26 ms
25,768 KB
testcase_19 AC 25 ms
25,500 KB
testcase_20 AC 24 ms
23,316 KB
testcase_21 AC 26 ms
23,664 KB
testcase_22 AC 26 ms
23,668 KB
testcase_23 AC 24 ms
23,656 KB
testcase_24 AC 24 ms
23,776 KB
testcase_25 AC 25 ms
23,564 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;
using System.IO;
using System.IO.Compression;
using System.Text;

namespace Solver
{
    class Program
    {
        const int M = 1000000007;
        const double eps = 1e-9;
        static int[] dd = { 0, 1, 0, -1, 0 };
        static void Main()
        {
            var sw = new System.IO.StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false };
            var sc = new Scan();
            var s = sc.Str;
            int n = s.Length;
            var list = new List<int>();
            long ans = 0;
            for (int i = 0; i < n; i++)
            {
                if (s[i] == 'w')
                    list.Add(i);
            }
            int c = list.Count;
            int j = 0;
            for (int i = 0; i < n; i++)
            {
                if (s[i] != 'c')
                    continue;
                    
                for (; j < c - 1; j++)
                {
                    if (list[j] > i)
                    {
                        ans += (c - j) * (long)(c - j - 1) / 2;
                        break;
                    }
                }
            }
            sw.WriteLine(ans);
            sw.Flush();
        }
         
        static void swap<T>(ref T a, ref T b)
        {
            var t = a;
            a = b;
            b = t;
        }
 
        static bool isprime(long n)
        {
            if (n == 1) return false;
 
            for (long i = 2; i * i <= n; i++)
                if (n % i == 0)
                    return false;
 
            return true;
        }
 
        static string strsort(string s)
        {
            var c = s.ToCharArray();
            Array.Sort(c);
            return string.Join("", c);
        }
        static string strswap(string s, int i, int j)
        {
            var c = s.ToCharArray();
            c[i] = s[j];
            c[j] = s[i];
            return string.Join("", c);
        }
 
        static T[] copy<T>(T[] a)
        {
            var ret = new T[a.Length];
            for (int i = 0; i < a.Length; i++) ret[i] = a[i];
            return ret;
        }
    }
    class Scan
    {
        public int Int { get { return int.Parse(Console.ReadLine().Trim()); } }
        public long Long { get { return long.Parse(Console.ReadLine().Trim()); } }
        public string Str { get { return Console.ReadLine().Trim(); } }
        public int[] IntArr { get { return Console.ReadLine().Trim().Split().Select(int.Parse).ToArray(); } }
        public int[] IntArrWithSep(char sep) { return Console.ReadLine().Trim().Split(sep).Select(int.Parse).ToArray(); }
        public long[] LongArr { get { return Console.ReadLine().Trim().Split().Select(long.Parse).ToArray(); } }
        public double[] DoubleArr { get { return Console.ReadLine().Split().Select(double.Parse).ToArray(); } }
        public string[] StrArr { get { return Console.ReadLine().Trim().Split(); } }
        public List<int> IntList { get { return Console.ReadLine().Trim().Split().Select(int.Parse).ToList(); } }
        public List<long> LongList { get { return Console.ReadLine().Trim().Split().Select(long.Parse).ToList(); } }
        public void Multi(out int a, out int b) { var arr = IntArr; a = arr[0]; b = arr[1]; }
        public void Multi(out int a, out int b, out int c) { var arr = IntArr; a = arr[0]; b = arr[1]; c = arr[2]; }
        public void Multi(out int a, out int b, out int c, out int d) { var arr = IntArr; a = arr[0]; b = arr[1]; c = arr[2]; d = arr[3]; }
        public void Multi(out int a, out string b) { var arr = StrArr; a = int.Parse(arr[0]); b = arr[1]; }
        public void Multi(out string a, out int b) { var arr = StrArr; a = arr[0]; b = int.Parse(arr[1]); }
        public void Multi(out int a, out int b, out string c) { var arr = StrArr; a = int.Parse(arr[0]); b = int.Parse(arr[1]); c = arr[2]; }
        public void Multi(out int a, out char b) { var arr = StrArr; a = int.Parse(arr[0]); b = arr[1][0]; }
        public void Multi(out char a, out int b) { var arr = StrArr; a = arr[0][0]; b = int.Parse(arr[1]); }
        public void Multi(out long a, out long b) { var arr = LongArr; a = arr[0]; b = arr[1]; }
        public void Multi(out long a, out int b) { var arr = LongArr; a = arr[0]; b = (int)arr[1]; }
        public void Multi(out int a, out long b) { var arr = LongArr; a = (int)arr[0]; b = arr[1]; }
        public void Multi(out string a, out string b) { var arr = StrArr; a = arr[0]; b = arr[1]; }
    }
    class mymath
    {
        public bool isprime(long a)
        {
            if (a < 2) return false;
            for (long i = 2; i * i <= a; i++)
                if (a % i == 0)
                    return false;
 
            return true;
        }
        public long[][] powmat(long[][] A, int n, int M)
        {
            var E = new long[A.Length][];
            for (int i = 0; i < A.Length; i++)
            {
                E[i] = new long[A.Length];
                E[i][i] = 1;
            }
            if (n == 0) return E;
            
            var t = powmat(A, n / 2, M);
            if ((n & 1) == 0) return mulmat(t, t, M);
            else return mulmat(mulmat(t, t, M), A, M);
        }
        public long[] mulmat(long[][] A, long[] x, int M)
        {
            var ans = new long[A.Length];
            for (int i = 0; i < A.Length; i++)
                for (int j = 0; j < x.Length; j++)
                    ans[i] = (ans[i] + x[j] * A[i][j]) % M;

            return ans;
        }
        public long[][] mulmat(long[][] A, long[][] B, int M)
        {
            var ans = new long[A.Length][];
            for (int i = 0; i < A.Length; i++)
            {
                ans[i] = new long[B[0].Length];
                for (int j = 0; j < B[0].Length; j++)
                    for (int k = 0; k < A[0].Length; k++)
                        ans[i][j] = (ans[i][j] + A[i][k] * B[k][j]) % M;
            }
            return ans;
        }
        public long powmod(long a, long b, long M)
        {
            if (a == 0) return 0;
            if (b == 0) return 1;
            if (b == 1) return a % M;
 
            var t = powmod(a, b / 2, M);
 
            if ((b & 1) == 0) return t * t % M;
            else return t * t % M * a % M;
        }
        public long gcd(long a, long b)
        {
            while (b != 0)
            {
                var t = a % b;
                a = b;
                b = t;
            }
            return a;
        }
        public long lcm(int a, int b) { return a * (long)b / gcd(a, b); }
    }
}
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