結果
問題 | No.491 10^9+1と回文 |
ユーザー |
|
提出日時 | 2020-10-14 12:48:09 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 9,628 bytes |
コンパイル時間 | 2,758 ms |
コンパイル使用メモリ | 118,896 KB |
実行使用メモリ | 29,448 KB |
最終ジャッジ日時 | 2024-07-20 19:05:37 |
合計ジャッジ時間 | 6,797 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 WA * 1 |
other | AC * 31 WA * 70 RE * 2 |
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.IO;using System.Collections.Generic;using System.Linq;using System.Numerics;using System.Diagnostics;using System.Runtime.CompilerServices;using System.Threading;namespace FertiLib.Contest.A{static class Program{public static void Solve(Scanner cin){long n = cin.ReadLong();var m = n / 1000000000L;if (m > n % 1000000000L) m--;var len = m.ToString().Length;long ans = 0;for (int i = 0; i < len; i++){ans += GetAns(m, i + 1);}Console.WriteLine(ans);}public static long GetAns(long n, long keta){if (n.ToString().Length > keta){n = 1;for (int i = 0; i < keta; i++){n *= 10;}n--;}var dp = new long[(keta + 1) / 2, 10, 2];long mask = 1L;for (int i = 0; i < keta; i++){mask *= 10;}long halfmask = 1L;for (int i = 0; i < keta / 2; i++){halfmask *= 10;}if (n.ToString().Length % 2 == 0 && long.Parse((n / halfmask).ToString().Reverse().Join()) < n % halfmask) n -= halfmask;if (n.ToString().Length % 2 == 1 && long.Parse((n / (halfmask * 10)).ToString().Reverse().Join()) < n % halfmask) n -= halfmask;var s = n.ToString().ToCharArray();for (int i = 0; i < (keta + 1) / 2; i++){long t = 0;if (i > 0){for (int j = 0; j < 10; j++){t += dp[i - 1, j, 1];}}else{dp[i, 0, 1]--;}for (int j = 0; j < 10; j++){dp[i, j, 1] += t;}for (int j = 0; j < s[i] - '0'; j++){dp[i, j, 1]++;}dp[i, s[i] - '0', 0] += 1;}var ret = 0L;for (int i = 0; i < 10; i++){ret += dp[(keta + 1) / 2 - 1, i, 0];ret += dp[(keta + 1) / 2 - 1, i, 1];}return ret;}public static void Main(string[] args){var sw = new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false };Console.SetOut(sw);var cin = new Scanner();Solve(cin);Console.Out.Flush();}public static void YESNO(bool condition) => Console.WriteLine(condition ? "YES" : "NO");public static void YesNo(bool condition) => Console.WriteLine(condition ? "Yes" : "No");public static void yesno(bool condition) => Console.WriteLine(condition ? "yes" : "no");public static bool Chmax<T>(ref T a, T b) where T : IComparable<T>{if (a.CompareTo(b) >= 0) return false;a = b;return true;}public static bool Chmin<T>(ref T a, T b) where T : IComparable<T>{if (a.CompareTo(b) <= 0) return false;a = b;return true;}}static class Extention{public static string Join<T>(this IEnumerable<T> x, string separator = "") => string.Join(separator, x);public static int UpperBound<T>(this IList<T> list, T value) => list.BinarySearch(value, true, 0, list.Count, Comparer<T>.Default);public static int LowerBound<T>(this IList<T> list, T value) => list.BinarySearch(value, false, 0, list.Count, Comparer<T>.Default);public static int BinarySearch<T>(this IList<T> list, T value, bool isUpperBound, int index, int length, Comparer<T> comparer){var ng = index - 1;var ok = index + length;while (ok - ng > 1){var mid = ng + (ok - ng) / 2;var res = comparer.Compare(list[mid], value);if (res < 0 || (isUpperBound && res == 0)) ng = mid;else ok = mid;}return ok;}}class Scanner{string[] s;int i;char[] separator = new char[] { ' ' };public Scanner(){s = new string[0];i = 0;}public string Read() => ReadString();public string ReadString(){if (i < s.Length) return s[i++];string st = Console.ReadLine();while (st == "") st = Console.ReadLine();s = st.Split(separator, StringSplitOptions.RemoveEmptyEntries);if (s.Length == 0) return ReadString();i = 0;return s[i++];}public string[] ReadStringArray(int N){string[] Array = new string[N];for (int i = 0; i < N; i++){Array[i] = ReadString();}return Array;}public int ReadInt(){return int.Parse(ReadString());}public int[] ReadIntArray(int N, int add = 0){int[] Array = new int[N];for (int i = 0; i < N; i++){Array[i] = ReadInt() + add;}return Array;}public long ReadLong(){return long.Parse(ReadString());}public long[] ReadLongArray(int N, long add = 0){long[] Array = new long[N];for (int i = 0; i < N; i++){Array[i] = ReadLong() + add;}return Array;}public double ReadDouble(){return double.Parse(ReadString());}public double[] ReadDoubleArray(int N, double add = 0){double[] Array = new double[N];for (int i = 0; i < N; i++){Array[i] = ReadDouble() + add;}return Array;}public T1 ReadValue<T1>() => (T1)Convert.ChangeType(ReadString(), typeof(T1));public (T1, T2) ReadValue<T1, T2>(){var inputs = ReadStringArray(2);var v1 = (T1)Convert.ChangeType(inputs[0], typeof(T1));var v2 = (T2)Convert.ChangeType(inputs[1], typeof(T2));return (v1, v2);}public (T1, T2, T3) ReadValue<T1, T2, T3>(){var inputs = ReadStringArray(3);var v1 = (T1)Convert.ChangeType(inputs[0], typeof(T1));var v2 = (T2)Convert.ChangeType(inputs[1], typeof(T2));var v3 = (T3)Convert.ChangeType(inputs[2], typeof(T3));return (v1, v2, v3);}public (T1, T2, T3, T4) ReadValue<T1, T2, T3, T4>(){var inputs = ReadStringArray(4);var v1 = (T1)Convert.ChangeType(inputs[0], typeof(T1));var v2 = (T2)Convert.ChangeType(inputs[1], typeof(T2));var v3 = (T3)Convert.ChangeType(inputs[2], typeof(T3));var v4 = (T4)Convert.ChangeType(inputs[3], typeof(T4));return (v1, v2, v3, v4);}public (T1, T2, T3, T4, T5) ReadValue<T1, T2, T3, T4, T5>(){var inputs = ReadStringArray(5);var v1 = (T1)Convert.ChangeType(inputs[0], typeof(T1));var v2 = (T2)Convert.ChangeType(inputs[1], typeof(T2));var v3 = (T3)Convert.ChangeType(inputs[2], typeof(T3));var v4 = (T4)Convert.ChangeType(inputs[3], typeof(T4));var v5 = (T5)Convert.ChangeType(inputs[4], typeof(T5));return (v1, v2, v3, v4, v5);}public (T1, T2, T3, T4, T5, T6) ReadValue<T1, T2, T3, T4, T5, T6>(){var inputs = ReadStringArray(6);var v1 = (T1)Convert.ChangeType(inputs[0], typeof(T1));var v2 = (T2)Convert.ChangeType(inputs[1], typeof(T2));var v3 = (T3)Convert.ChangeType(inputs[2], typeof(T3));var v4 = (T4)Convert.ChangeType(inputs[3], typeof(T4));var v5 = (T5)Convert.ChangeType(inputs[4], typeof(T5));var v6 = (T6)Convert.ChangeType(inputs[5], typeof(T6));return (v1, v2, v3, v4, v5, v6);}public (T1, T2, T3, T4, T5, T6, T7) ReadValue<T1, T2, T3, T4, T5, T6, T7>(){var inputs = ReadStringArray(7);var v1 = (T1)Convert.ChangeType(inputs[0], typeof(T1));var v2 = (T2)Convert.ChangeType(inputs[1], typeof(T2));var v3 = (T3)Convert.ChangeType(inputs[2], typeof(T3));var v4 = (T4)Convert.ChangeType(inputs[3], typeof(T4));var v5 = (T5)Convert.ChangeType(inputs[4], typeof(T5));var v6 = (T6)Convert.ChangeType(inputs[5], typeof(T6));var v7 = (T7)Convert.ChangeType(inputs[6], typeof(T7));return (v1, v2, v3, v4, v5, v6, v7);}public T1[] ReadValueArray<T1>(int N){var v1 = new T1[N];for (int i = 0; i < N; i++){v1[i] = ReadValue<T1>();}return v1;}public (T1[], T2[]) ReadValueArray<T1, T2>(int N){var (v1, v2) = (new T1[N], new T2[N]);for (int i = 0; i < N; i++){var (t1, t2) = ReadValue<T1, T2>();v1[i] = t1;v2[i] = t2;}return (v1, v2);}public (T1[], T2[], T3[]) ReadValueArray<T1, T2, T3>(int N){var (v1, v2, v3) = (new T1[N], new T2[N], new T3[N]);for (int i = 0; i < N; i++){var (t1, t2, t3) = ReadValue<T1, T2, T3>();v1[i] = t1;v2[i] = t2;v3[i] = t3;}return (v1, v2, v3);}public (T1[], T2[], T3[], T4[]) ReadValueArray<T1, T2, T3, T4>(int N){var (v1, v2, v3, v4) = (new T1[N], new T2[N], new T3[N], new T4[N]);for (int i = 0; i < N; i++){var (t1, t2, t3, t4) = ReadValue<T1, T2, T3, T4>();v1[i] = t1;v2[i] = t2;v3[i] = t3;v4[i] = t4;}return (v1, v2, v3, v4);}public (T1[], T2[], T3[], T4[], T5[]) ReadValueArray<T1, T2, T3, T4, T5>(int N){var (v1, v2, v3, v4, v5) = (new T1[N], new T2[N], new T3[N], new T4[N], new T5[N]);for (int i = 0; i < N; i++){var (t1, t2, t3, t4, t5) = ReadValue<T1, T2, T3, T4, T5>();v1[i] = t1;v2[i] = t2;v3[i] = t3;v4[i] = t4;v5[i] = t5;}return (v1, v2, v3, v4, v5);}public (T1[], T2[], T3[], T4[], T5[], T6[]) ReadValueArray<T1, T2, T3, T4, T5, T6>(int N){var (v1, v2, v3, v4, v5, v6) = (new T1[N], new T2[N], new T3[N], new T4[N], new T5[N], new T6[N]);for (int i = 0; i < N; i++){var (t1, t2, t3, t4, t5, t6) = ReadValue<T1, T2, T3, T4, T5, T6>();v1[i] = t1;v2[i] = t2;v3[i] = t3;v4[i] = t4;v5[i] = t5;v6[i] = t6;}return (v1, v2, v3, v4, v5, v6);}public (T1[], T2[], T3[], T4[], T5[], T6[], T7[]) ReadValueArray<T1, T2, T3, T4, T5, T6, T7>(int N){var (v1, v2, v3, v4, v5, v6, v7) = (new T1[N], new T2[N], new T3[N], new T4[N], new T5[N], new T6[N], new T7[N]);for (int i = 0; i < N; i++){var (t1, t2, t3, t4, t5, t6, t7) = ReadValue<T1, T2, T3, T4, T5, T6, T7>();v1[i] = t1;v2[i] = t2;v3[i] = t3;v4[i] = t4;v5[i] = t5;v6[i] = t6;v7[i] = t7;}return (v1, v2, v3, v4, v5, v6, v7);}}}