結果
| 問題 | No.1740 Alone 'a' |
| ユーザー |
 fgwiebfaoish
|
| 提出日時 | 2021-11-12 21:31:56 |
| 言語 | C#(csc) (csc 3.9.0) |
| 結果 |
AC
|
| 実行時間 | 595 ms / 2,000 ms |
| コード長 | 4,990 bytes |
| コンパイル時間 | 3,077 ms |
| コンパイル使用メモリ | 116,660 KB |
| 実行使用メモリ | 32,408 KB |
| 最終ジャッジ日時 | 2024-11-25 12:15:47 |
| 合計ジャッジ時間 | 12,432 ms |
|
ジャッジサーバーID （参考情報） |
judge1 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 38 |
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.Collections.Generic;using System.Collections;using System.Collections.Specialized;using System.Linq;using System.Text;using System.Text.RegularExpressions;using System.IO;using System.Reflection;using static System.Math;using System.Numerics;using System.Threading;using System.Runtime.CompilerServices;using System.Diagnostics;//using nint=System.Int32;static class Program{const int mod=998244353;static void Main(){Sc sc=new Sc();var n=sc.I;var s=sc.S;var a=new int[n];for(int i = 0;i<n;i++) {a[i]=s[i]-'a';}Console.WriteLine("{0}",Fu1(a));}static int Fu1(int[] a){int n=a.Length;Mint ans=0;var dp=new Mint[n+1,2,2];dp[0,0,0]=1;for(int i=0;i<n;i++){for(int j=0;j<2;j++){for(int k=0;k<2;k++){int ul=j==0?a[i]:25;for(int d=k==1?1:0;d<=ul;d++){dp[i+1,(j==1||d<ul)?1:0,(k==1||d==0)?1:0]+=dp[i,j,k];}}}}for(int j=0;j<2;j++){ans+=dp[n,j,1];}return (int)dp[n,1,1];}}public struct Mint{const int mod=998244353;private long d;public Mint(long d){this.d=d;}public static implicit operator Mint(long d){return new Mint(d%mod);}public static explicit operator long(Mint d){return d.d;}public override string ToString(){return d.ToString();}public static Mint operator+(Mint a,long b){a.d=(mod+a.d+b%mod)%mod;return a;}public static Mint operator+(Mint a,Mint b){a.d=(a.d+b.d)%mod;return a;}public static Mint operator-(Mint a,long b){a.d=(mod+a.d-b%mod)%mod;return a;}public static Mint operator-(Mint a,Mint b){a.d=(mod+a.d-b.d)%mod;return a;}public static Mint operator*(Mint a,long b){a.d=b%mod*a.d%mod;return a;}public static Mint operator*(Mint a,Mint b){a.d=a.d*b.d%mod;return a;}public static Mint operator/(Mint a,long b){a.d=a.d*Mi(b)%mod;return a;}public static Mint operator/(Mint a,Mint b){a.d=a.d*Mi(b.d)%mod;return a;}public static bool operator==(Mint a,long b){return (long)a==b;}public static bool operator!=(Mint a,long b){return (long)a!=b;}public override bool Equals(object obj){return false;}public override int GetHashCode(){return 0;}public static long Mi(long a){a=(a+mod)%mod;long b=mod,u=1,v=0;while(b>0){long t=a/b;a-=t*b;(a,b)=(b,a);u-=t*v;(u,v)=(v,u);}u%=mod;if(u<0){u+=mod;}return u%mod;}}public class Sc{public int I{get{return int.Parse(Console.ReadLine());}}public long L{get{return long.Parse(Console.ReadLine());}}public double D{get{return double.Parse(Console.ReadLine());}}public string S{get{return Console.ReadLine();}}public int[] Ia{get{return Array.ConvertAll(Console.ReadLine().Split(),int.Parse);}}public long[] La{get{return Array.ConvertAll(Console.ReadLine().Split(),long.Parse);}}public double[] Da{get{return Array.ConvertAll(Console.ReadLine().Split(),double.Parse);}}public string[] Sa{get{return Console.ReadLine().Split();}}public object[] Oa{get{return Console.ReadLine().Split();}}public int[] Ia2{get{return Array.ConvertAll(("0 "+Console.ReadLine()+" 0").Split(),int.Parse);}}public int[] Ia3(string a,string b){return Array.ConvertAll((a+Console.ReadLine()+b).Split(),int.Parse);}public int[] Ia3(int a){return Array.ConvertAll((Console.ReadLine()+" "+a.ToString()).Split(),int.Parse);}public long[] La2{get{return Array.ConvertAll(("0 "+Console.ReadLine()+" 0").Split(),long.Parse);}}public long[] La3(string a,string b){return Array.ConvertAll((a+Console.ReadLine()+b).Split(),long.Parse);}public long[] La3(int a){return Array.ConvertAll((Console.ReadLine()+" "+a.ToString()).Split(),long.Parse);}public double[] Da2{get{return Array.ConvertAll(("0 "+Console.ReadLine()+" 0").Split(),double.Parse);}}public double[] Da3(string a,string b){return Array.ConvertAll((a+Console.ReadLine()+b).Split(),double.Parse);}public T[] Arr<T>(int n,Func<T> f){var a=new T[n];for(int i=0;i<n;i++){a[i]=f();}return a;}public T[] Arr<T>(int n,Func<int,T> f){var a=new T[n];for(int i=0;i<n;i++){a[i]=f(i);}return a;}public T[] Arr<T>(int n,Func<string[],T> f){var a=new T[n];for(int i=0;i<n;i++){a[i]=f(Console.ReadLine().Split());}return a;}public T[] Arr<T>(int n,Func<int,string[],T> f){var a=new T[n];for(int i=0;i<n;i++){a[i]=f(i,Console.ReadLine().Split());}return a;}public (T,T) Tp2<T>(){var s=Console.ReadLine().Split();return (Ct<T>(s[0]),Ct<T>(s[1]));}public (T,T,T) Tp3<T>(){var s=Console.ReadLine().Split();return (Ct<T>(s[0]),Ct<T>(s[1]),Ct<T>(s[2]));}public (T,T,T,T) Tp4<T>(){var s=Console.ReadLine().Split();return (Ct<T>(s[0]),Ct<T>(s[1]),Ct<T>(s[2]),Ct<T>(s[3]));}public (T,T,T,T,T) Tp5<T>(){var s=Console.ReadLine().Split();return (Ct<T>(s[0]),Ct<T>(s[1]),Ct<T>(s[2]),Ct<T>(s[3]),Ct<T>(s[4]));}public (T1,T2) Tp2<T1,T2>(){var s=Console.ReadLine().Split();return (Ct<T1>(s[0]),Ct<T2>(s[1]));}public (T1,T1,T2) Tp3<T1,T2>(){var s=Console.ReadLine().Split();return (Ct<T1>(s[0]),Ct<T1>(s[1]),Ct<T2>(s[2]));}private T Ct<T>(string s){return (T)Convert.ChangeType(s,typeof(T));}}