結果

問題 No.1706 Many Bus Stops (hard)
ユーザー fgwiebfaoish
提出日時 2021-10-12 22:04:22
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 26 ms / 2,000 ms
コード長 4,212 bytes
コンパイル時間 840 ms
コンパイル使用メモリ 115,924 KB
実行使用メモリ 26,348 KB
最終ジャッジ日時 2024-09-17 09:35:28
合計ジャッジ時間 2,973 ms
ジャッジサーバーID
(参考情報)
judge3 / 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 * 41
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.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=(int)1e9+7;
static void Main(){
Sc sc=new Sc();
var (c,n,m)=sc.Tp3<int>();
var p=Mi(c);
var g=new long[][]{
new long[]{p,0,1,0},
new long[]{0,p,0,1},
new long[]{0,p,0,0},
new long[]{p*(c-1)%mod,p*(c-2)%mod,0,0},
};
var a=Mp(new long[]{1,0,0,0},g,n);
Console.WriteLine((mod+1-Fp((mod+1-a[0])%mod,m))%mod);
}
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;
}
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;
}
static long[] Mp(long[] r,long[][] x,long e){
while(e>0){
if((e&1)>0){r=Mm(x,r);}
x=Mm(x,x);
e>>=1;
}
return r;
}
static long[] Mm(long[][] a,long[] b){
var q=new long[b.Length];
for(int j=0;j<a.Length;j++){
for(int k=0;k<a.Length;k++){q[j]=(q[j]+a[j][k]*b[k])%mod;}
}
return q;
}
static long[][] Mm(long[][] a,long[][] b){
var q=new long[a.Length][];
for(int j=0;j<a.Length;j++){
q[j]=new long[b[0].Length];
for(int i=0;i<b[0].Length;i++){
for(int k=0;k<a.Length;k++){q[j][i]=(q[j][i]+a[j][k]*b[k][i])%mod;}
}
}
return q;
}
}
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 (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));}
}
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