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); } }