結果

問題 No.491 10^9+1と回文
ユーザー claw88
提出日時 2017-03-10 23:12:39
言語 C#(csc)
(csc 3.9.0)
結果
WA  
実行時間 -
コード長 2,269 bytes
コンパイル時間 869 ms
コンパイル使用メモリ 113,112 KB
実行使用メモリ 30,336 KB
最終ジャッジ日時 2024-06-24 08:34:10
合計ジャッジ時間 6,046 ms
ジャッジサーバーID
(参考情報)
judge5 / judge2
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 * 42 WA * 61
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";
long Z = 1000000001;
void Solve()
{
long N = cin.Nextlong;
int ans = 0;
int cnt = 1;
int d = 1;
int k = 1;
for (long i = Z; i <= N;)
{
if (cnt >= k * 10)
{
d = d * 10 + 1;
k *= 10;
}
if (cnt % d == 0)
{
ans++;
//WriteLine(cnt);
cnt += d;
i += Z * d;
}
else
{
cnt++;
i += Z;
}
}
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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