結果
問題 | No.491 10^9+1と回文 |
ユーザー |
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提出日時 | 2017-03-11 19:40:41 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 163 ms / 1,000 ms |
コード長 | 2,740 bytes |
コンパイル時間 | 1,045 ms |
コンパイル使用メモリ | 108,416 KB |
実行使用メモリ | 23,424 KB |
最終ジャッジ日時 | 2024-10-01 08:31:35 |
合計ジャッジ時間 | 18,523 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 103 |
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;using System.Collections.Generic;using System.Collections.Specialized;using System.Text;using System.Text.RegularExpressions;using System.Linq;using System.IO;using System.ComponentModel;class Program{static void Main(string[] args){var alice = new Magatro();alice.Scan();alice.Solve();}}public class Scanner{private StreamReader Sr;private string[] S;private int Index;private const char Separator = ' ';public Scanner() : this(Console.OpenStandardInput()){Index = 0;S = new string[0];}public Scanner(Stream source){Sr = new StreamReader(source);}private string[] Line(){return Sr.ReadLine().Split(Separator);}public string Next(){string result;if (Index >= S.Length){S = Line();Index = 0;}result = S[Index];Index++;return result;}public T Next<T>(){var converter = TypeDescriptor.GetConverter(typeof(T));return (T)converter.ConvertFromString(Next());}public int NextInt(){return int.Parse(Next());}public double NextDouble(){return double.Parse(Next());}public long NextLong(){return long.Parse(Next());}public decimal NextDecimal(){return decimal.Parse(Next());}public string[] StringArray(int index = 0){Next();Index = S.Length;return S.Skip(index).ToArray();}public int[] IntArray(int index = 0){return StringArray(index).Select(int.Parse).ToArray();}public long[] LongArray(int index = 0){return StringArray(index).Select(long.Parse).ToArray();}public bool EndOfStream{get { return Sr.EndOfStream; }}}public class Magatro{private long N;private const long Mod = (int)1e9 + 1;public void Scan(){Scanner cin = new Scanner();N = cin.NextLong();}public void Solve(){var max = N / Mod;int cnt = 0;for (int i = 1; i < 100000; i++){string left = i.ToString();var right = i.ToString().Reverse().ToArray();string rights = new string(right);string rightss = new string(right.Skip(1).ToArray());if (long.Parse(left + rights) <= max){cnt++;}if (long.Parse(left + rightss) <= max){cnt++;}}Console.WriteLine(cnt);}}