結果

問題 No.319 happy b1rthday 2 me
ユーザー りあん
提出日時 2015-11-23 14:02:30
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 30 ms / 2,000 ms
コード長 6,629 bytes
コンパイル時間 1,058 ms
コンパイル使用メモリ 112,964 KB
実行使用メモリ 27,496 KB
最終ジャッジ日時 2024-09-13 17:15:24
合計ジャッジ時間 3,343 ms
ジャッジサーバーID
(参考情報)
judge3 / 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 * 4
other AC * 29
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.Text;
namespace Solver
{
class Program
{
const int M = 1000000007;
const double eps = 1e-9;
static void Main()
{
var sw = new System.IO.StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false };
var sc = new Scan();
// var s1 = new sol1();
var s2 = new sol2();
var a = sc.LongArr;
sw.WriteLine(s2.run(a[0], a[1]));
sw.Flush();
}
}
class sol1
{
public int run(int a, int b)
{
var sb = new StringBuilder();
for (int i = a; i <= b; i++)
sb.Append(i);
var s = sb.ToString();
int ans = 0;
for (int i = 0; i < s.Length - 1; i++)
if (s[i] == '1' && s[i + 1] == '2')
++ans;
return ans;
}
}
class sol2
{
public long run(long a, long b)
{
var s = (a - 1).ToString();
if (s[s.Length - 1] == '1' && a.ToString()[0] == '2')
return count(b) - count(a - 1) - 1;
return count(b) - count(a - 1);
}
long count(long a)
{
if (a < 2) return 0;
if (a < 12) return 1;
var s = a.ToString();
int n = s.Length;
long ret = 1;
var l = new long[n];
l[1] = 1;
for (int i = 1; i < n - 1; i++)
l[i + 1] = l[i] * 10;
for (int i = 0; i < n - 1; i++)
{
if (i == 0)
{
if (s[0] == '1')
{
if (s[1] == '2')
{
if (n == 2)
return 2;
ret += long.Parse(s.Substring(2)) + 1;
}
else if (s[1] > '2')
ret += l[n - 1];
}
else if (s[0] == '2')
{
if (s[n - 1] > '1')
{
if (n == 2)
return 3;
ret += long.Parse(s.Substring(1, n - 2)) + 1;
}
else
{
if (n == 2)
return 2;
ret += long.Parse(s.Substring(1, n - 2));
}
ret += l[n - 1];
}
else
ret += l[n - 1] * 2;
continue;
}
ret += l[n - i - 1];
if (s[i] == '1')
{
if (s[i + 1] == '2')
{
if (i + 2 == n)
ret += long.Parse(s.Substring(0, i)) * l[n - i - 1] + 1;
else
ret += long.Parse(s.Substring(0, i)) * l[n - i - 1] + long.Parse(s.Substring(i + 2)) + 1;
}
else if (s[i + 1] > '2')
ret += (long.Parse(s.Substring(0, i)) + 1) * l[n - i - 1];
else
ret += long.Parse(s.Substring(0, i)) * l[n - i - 1];
}
else if (s[i] > '1')
ret += (long.Parse(s.Substring(0, i)) + 1) * l[n - i - 1];
else
ret += long.Parse(s.Substring(0, i)) * l[n - i - 1];
}
return ret;
}
}
class Scan
{
public int Int { get { return int.Parse(Console.ReadLine().Trim()); } }
public long Long { get { return long.Parse(Console.ReadLine().Trim()); } }
public string Str { get { return Console.ReadLine().Trim(); } }
public int[] IntArr { get { return Console.ReadLine().Trim().Split().Select(int.Parse).ToArray(); } }
public int[] IntArrWithSep(char sep) { return Console.ReadLine().Trim().Split(sep).Select(int.Parse).ToArray(); }
public long[] LongArr { get { return Console.ReadLine().Trim().Split().Select(long.Parse).ToArray(); } }
public double[] DoubleArr { get { return Console.ReadLine().Split().Select(double.Parse).ToArray(); } }
public string[] StrArr { get { return Console.ReadLine().Trim().Split(); } }
public List<int> IntList { get { return Console.ReadLine().Trim().Split().Select(int.Parse).ToList(); } }
public List<long> LongList { get { return Console.ReadLine().Trim().Split().Select(long.Parse).ToList(); } }
public void Multi(out int a, out int b) { var arr = IntArr; a = arr[0]; b = arr[1]; }
public void Multi(out int a, out int b, out int c) { var arr = IntArr; a = arr[0]; b = arr[1]; c = arr[2]; }
public void Multi(out int a, out int b, out int c, out int d) { var arr = IntArr; a = arr[0]; b = arr[1]; c = arr[2]; d = arr[3]; }
public void Multi(out int a, out string b) { var arr = StrArr; a = int.Parse(arr[0]); b = arr[1]; }
public void Multi(out int a, out int b, out string c) { var arr = StrArr; a = int.Parse(arr[0]); b = int.Parse(arr[1]); c = arr[2]; }
public void Multi(out int a, out char b) { var arr = StrArr; a = int.Parse(arr[0]); b = arr[1][0]; }
public void Multi(out char a, out int b) { var arr = StrArr; a = arr[0][0]; b = int.Parse(arr[1]); }
public void Multi(out long a, out long b) { var arr = LongArr; a = arr[0]; b = arr[1]; }
public void Multi(out long a, out int b) { var arr = LongArr; a = arr[0]; b = (int)arr[1]; }
public void Multi(out string a, out string b) { var arr = StrArr; a = arr[0]; b = arr[1]; }
}
class mymath
{
int M;
const double eps = 1e-9;
public mymath(int M) { this.M = M; }
public long pow(long a, long b)
{
if (b == 0) return 1;
if (b == 1) return a % M;
long t = pow(a, b / 2);
if ((b & 1) == 0) return t * t % M;
else return t * t % M * a % M;
}
public long gcd(long a, long b)
{
while (b != 0)
{
var t = a % b;
a = b;
b = t;
}
return a;
}
public long lcm(int a, int b) { return (a * b) / gcd(a, b); }
}
}
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
0