結果

問題 No.491 10^9+1と回文
ユーザー claw88
提出日時 2017-03-10 23:46:48
言語 C#(csc)
(csc 3.9.0)
結果
WA  
実行時間 -
コード長 2,109 bytes
コンパイル時間 1,013 ms
コンパイル使用メモリ 114,892 KB
実行使用メモリ 30,728 KB
最終ジャッジ日時 2024-06-24 09:04:28
合計ジャッジ時間 7,114 ms
ジャッジサーバーID
(参考情報)
judge2 / judge1
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 3
other AC * 32 WA * 71
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 #
プレゼンテーションモードにする

using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using System.Globalization;
using System.Diagnostics;
using static System.Console;
using Pair = System.Collections.Generic.KeyValuePair<int, int>;
class Program
{
static void Main()
{
SetOut(new StreamWriter(OpenStandardOutput()) { AutoFlush = false });
//SetOut(new StreamWriter("out.txt"));
new Program().Solve();
Out.Flush();
}
Scanner cin = new Scanner();
Random rnd = new Random();
Stopwatch sw = new Stopwatch();
readonly int[] dd = { 0, 1, 0, -1, 0 };
readonly int mod = 1000000007;
readonly string alfa = "abcdefghijklmnopqrstuvwxyz";
int Z = 1000000001;
void Solve()
{
long N = cin.Nextlong;
long ans = 0;
int d = 1; //
for (long i = Z; i <= N; i *= 10)
{
long J = Math.Min(9, N / i);
if (d == 1) ans += J;
else ans += (long)Math.Pow(J, d / 2) + (d % 2) * 9;
//Console.WriteLine(J + " " + d + " " + ((long)Math.Pow(J, d / 2) + (d % 2) * 9));
d++;
}
WriteLine(ans);
}
}
class Scanner
{
string[] s; int i;
char[] cs = new char[] { ' ' };
public Scanner() { s = new string[0]; i = 0; }
public string[] Scan { get { return ReadLine().Split(); } }
public int[] Scanint { get { return Array.ConvertAll(Scan, int.Parse); } }
public long[] Scanlong { get { return Array.ConvertAll(Scan, long.Parse); } }
public double[] Scandouble { get { return Array.ConvertAll(Scan, double.Parse); } }
public string Next
{
get
{
if (i < s.Length) return s[i++];
string st = ReadLine();
while (st == "") st = ReadLine();
s = st.Split(cs, StringSplitOptions.RemoveEmptyEntries);
i = 0;
return Next;
}
}
public int Nextint { get { return int.Parse(Next); } }
public long Nextlong { get { return long.Parse(Next); } }
public double Nextdouble { get { return double.Parse(Next); } }
}
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