結果
| 問題 | No.1239 Multiplication -2 |
| ユーザー |
 fgwiebfaoish
|
| 提出日時 | 2020-09-29 17:25:56 |
| 言語 | C#(csc) (csc 3.9.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 4,964 bytes |
| コンパイル時間 | 884 ms |
| コンパイル使用メモリ | 112,100 KB |
| 実行使用メモリ | 50,712 KB |
| 最終ジャッジ日時 | 2024-07-04 01:34:15 |
| 合計ジャッジ時間 | 5,839 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 * 3 |
| other | AC * 14 WA * 19 RE * 1 |
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.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;//const double eps=1e-11;static void Main(){Sc sc=new Sc();var n=sc.I;var a=sc.Ia2;var g=new int[n+1];var u=new int[n+1];var f=new int[n+1];var r=new long[][]{new long[n+2],new long[n+2]};var rr=new long[n+1];rr[n]=rr[n-1]=1;for(int i = n-2;i>0;i--) {rr[i]=(rr[i+1]<<1)%mod;}for(int i = 1,k=0;i<=n;i++) {r[0][i]=r[0][i-1];r[1][i]=r[1][i-1];f[i]=f[i-1];if(a[i]<0){f[i]++;k^=1;}if(a[i]!=0){r[k][i]+=rr[i];r[k][i]%=mod;}}Mint z=1;for(int i = n,j=n+1,k=n+1;i>=0;i--,z*=2) {g[i]=j;u[i]=k;if((a[i]&1)==0){j=i;}if(a[i]==-1){k=i;}}Mint ans=0,v=1;for(int i = 1;i<=n;i++) {if(a[i]==-1){if((g[i]==n||a[g[i]]==0)||((f[g[i]]-f[i])%2==1&&g[g[i]]<u[g[i]])){v=Fp(2,i-1);continue;}int p=(f[g[i]]-f[i])%2==1?u[g[i]]:g[i];ans+=v*(r[f[p]&1][g[p]-1]-r[f[p]&1][p-1]);}else if((a[i]&2)!=0){int p=a[i]==-2?i:u[i];if(p==n+1){v=Fp(2,i-1);continue;}ans+=v*(r[f[p]&1][g[p]-1]-r[f[p]&1][p-1]);}if(a[i]==1){v+=Fp(2,i-1);}else{v=Fp(2,i-1);}}Console.WriteLine("{0}",ans/Fp(2,n-1));}static long Fp(long x,long e){long r=1;while(e>0){if((e&1)>0){r*=x;r%=mod;}x=(x*x)%mod;e>>=1;}return r;}}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=(a.d+b)%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;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=(a.d*b)%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;}private 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;}}