結果

問題 No.793 うし数列 2
ユーザー 紙ぺーぱー紙ぺーぱー
提出日時 2019-02-22 22:50:27
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 31 ms / 2,000 ms
コード長 3,787 bytes
コンパイル時間 3,407 ms
コンパイル使用メモリ 117,100 KB
実行使用メモリ 27,288 KB
最終ジャッジ日時 2024-11-25 11:57:28
合計ジャッジ時間 4,843 ms
ジャッジサーバーID
(参考情報)
judge1 / judge4
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 * 2
other AC * 21
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.Linq;
using System.Collections.Generic;
using Debug = System.Diagnostics.Trace;
using SB = System.Text.StringBuilder;
using System.Numerics;
using static System.Math;
using Number = System.Int64;
namespace Program
{
public class Solver
{
Random rnd = new Random(0);
public void Solve()
{
var n = rl;
BigInteger ans = 0;
const long M = (long)1e9 + 7;
ans += BigInteger.ModPow(10, n, M);
ans += M - 1;
ans %= M;
ans *= BigInteger.ModPow(3, M - 2, M);
ans %= M;
ans += BigInteger.ModPow(10, n, M);
ans %= M;
System.Console.WriteLine(ans);
}
const long INF = 1L << 60;
int ri => sc.Integer();
long rl => sc.Long();
double rd => sc.Double();
string rs => sc.Scan();
public IO.StreamScanner sc = new IO.StreamScanner(Console.OpenStandardInput());
static IEnumerable<int> Rep(int n) => Enumerable.Range(0, n);
static IEnumerable<int> RRep(int n) => Enumerable.Range(0, n).Reverse();
static T[] Enumerate<T>(int n, Func<int, T> f)
{
var a = new T[n];
for (int i = 0; i < a.Length; ++i) a[i] = f(i);
return a;
}
static public void Swap<T>(ref T a, ref T b) { var tmp = a; a = b; b = tmp; }
}
}
#region main
static class Ex
{
static public string AsString(this IEnumerable<char> ie) { return new string(ie.ToArray()); }
static public string AsJoinedString<T>(this IEnumerable<T> ie, string st = " ")
{
return string.Join(st, ie);
}
static public void Main()
{
Console.SetOut(new Program.IO.Printer(Console.OpenStandardOutput()) { AutoFlush = false });
var solver = new Program.Solver();
solver.Solve();
Console.Out.Flush();
}
}
#endregion
#region Ex
namespace Program.IO
{
using System.IO;
using System.Text;
using System.Globalization;
public class Printer : StreamWriter
{
public override IFormatProvider FormatProvider => CultureInfo.InvariantCulture;
public Printer(Stream stream) : base(stream, new UTF8Encoding(false, true)) { }
}
public class StreamScanner
{
public StreamScanner(Stream stream) { str = stream; }
public readonly Stream str;
private readonly byte[] buf = new byte[1024];
private int len, ptr;
public bool isEof = false;
private byte read()
{
if (isEof) return 0;
if (ptr >= len)
{
ptr = 0;
if ((len = str.Read(buf, 0, 1024)) <= 0)
{
isEof = true;
return 0;
}
}
return buf[ptr++];
}
public char Char()
{
byte b = 0;
do b = read(); while ((b < 33 || 126 < b) && !isEof);
return (char)b;
}
public string Scan()
{
var sb = new StringBuilder();
for (var b = Char(); b >= 33 && b <= 126; b = (char)read()) sb.Append(b);
return sb.ToString();
}
public string ScanLine()
{
var sb = new StringBuilder();
for (var b = Char(); b != '\n' && b != 0; b = (char)read()) if (b != '\r') sb.Append(b);
return sb.ToString();
}
public long Long() { return isEof ? long.MinValue : long.Parse(Scan()); }
public int Integer() { return isEof ? int.MinValue : int.Parse(Scan()); }
public double Double() { return isEof ? double.NaN : double.Parse(Scan(), CultureInfo.InvariantCulture); }
}
}
#endregion
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