結果

問題 No.1035 Color Box
ユーザー fgwiebfaoishfgwiebfaoish
提出日時 2020-04-24 22:07:02
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 145 ms / 2,000 ms
コード長 4,624 bytes
コンパイル時間 3,295 ms
コンパイル使用メモリ 106,616 KB
実行使用メモリ 23,748 KB
最終ジャッジ日時 2023-08-05 05:04:32
合計ジャッジ時間 7,337 ms
ジャッジサーバーID
(参考情報)
judge11 / judge13
このコードへのチャレンジ(β)

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 145 ms
23,748 KB
testcase_01 AC 60 ms
20,820 KB
testcase_02 AC 60 ms
20,796 KB
testcase_03 AC 66 ms
20,680 KB
testcase_04 AC 68 ms
20,828 KB
testcase_05 AC 62 ms
20,792 KB
testcase_06 AC 59 ms
20,796 KB
testcase_07 AC 61 ms
20,920 KB
testcase_08 AC 134 ms
21,548 KB
testcase_09 AC 91 ms
21,412 KB
testcase_10 AC 60 ms
20,724 KB
testcase_11 AC 59 ms
20,932 KB
testcase_12 AC 60 ms
22,916 KB
testcase_13 AC 120 ms
21,524 KB
testcase_14 AC 127 ms
21,512 KB
testcase_15 AC 145 ms
21,816 KB
testcase_16 AC 60 ms
22,796 KB
testcase_17 AC 59 ms
20,752 KB
testcase_18 AC 59 ms
22,784 KB
testcase_19 AC 145 ms
21,872 KB
testcase_20 AC 60 ms
20,752 KB
testcase_21 AC 60 ms
22,948 KB
testcase_22 AC 60 ms
20,852 KB
testcase_23 AC 61 ms
20,832 KB
testcase_24 AC 60 ms
22,876 KB
testcase_25 AC 60 ms
20,692 KB
testcase_26 AC 59 ms
20,852 KB
testcase_27 AC 60 ms
20,912 KB
testcase_28 AC 60 ms
20,740 KB
testcase_29 AC 61 ms
20,736 KB
testcase_30 AC 59 ms
22,872 KB
testcase_31 AC 60 ms
20,944 KB
testcase_32 AC 59 ms
20,804 KB
testcase_33 AC 60 ms
20,820 KB
testcase_34 AC 59 ms
20,828 KB
testcase_35 AC 59 ms
20,812 KB
testcase_36 AC 60 ms
22,852 KB
testcase_37 AC 58 ms
20,844 KB
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 #

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;
static class Program{
	const int mod=(int)1e9+7;
	const double eps=1e-11;
	static void Main(){
		Sc sc=new Sc();
		var s=sc.Ia;
		int n=s[0],k=s[1];
		Mint res=0;
		Cb r=new Cb(n+k);
		for(int i=0;i<=k;i++){
			Mint tmp=(r.C1(k,i)*(Mint)Fp(i,n));
			if((k-i)%2==1){res-=tmp;}
			else{res+=tmp;}
		}
		Console.WriteLine("{0}",res);
	}
	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 class Cb{
	private const int mod=(int)1e9+7;
	public long[] r;
	public Cb(int n){
		r=new long[n];
		r[0]=1;
		for(int i=1;i<n;i++){r[i]=(r[i-1]*i)%mod;}
	}
	public long C1(long n,long k){return (r[n]*Mi(r[k]*r[n-k]))%mod;}
	public long C2(long n,long k){
		long l=1;
		n%=mod;
		for(int i=1;i<=k;i++){l=(l*(n-i+1))%mod;l=(l*Mi(i))%mod;}
		return l;
	}
	public long P1(long n,long k){return n<k?0:(r[n]*Mi(r[n-k]))%mod;}
	public 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;a^=b;u-=t*v;u^=v;v^=u;u^=v;}
		u%=mod;
		if(u<0){u+=mod;}
		return u%mod;
	}
}
public struct Mint{
	const int mod=(int)1e9+7;
	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;}
	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;a^=b;
			u-=t*v;u^=v;v^=u;u^=v;
		}
		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(int a){return Array.ConvertAll((a.ToString()+" "+Console.ReadLine()).Split(),int.Parse);}
	public int[] Ia3(bool a,int b,bool c,int d){return Array.ConvertAll(((a?b.ToString()+" ":"")+Console.ReadLine()+(c?" "+d.ToString():"")).Split(),int.Parse);}
	public long[] La2{get{return Array.ConvertAll(("0 "+Console.ReadLine()+" 0").Split(),long.Parse);}}
	public long[] La3(int a){return Array.ConvertAll((a.ToString()+" "+Console.ReadLine()).Split(),long.Parse);}
	public long[] La3(bool a,int b,bool c,int d){return Array.ConvertAll(((a?b.ToString()+" ":"")+Console.ReadLine()+(c?" "+d.ToString():"")).Split(),long.Parse);}
	public double[] Da2{get{return Array.ConvertAll(("0 "+Console.ReadLine()+" 0").Split(),double.Parse);}}
	public double[] Da3(int a){return Array.ConvertAll((a.ToString()+" "+Console.ReadLine()).Split(),double.Parse);}
	public double[] Da3(bool a,int b,bool c,int d){return Array.ConvertAll(((a?b.ToString()+" ":"")+Console.ReadLine()+(c?" "+d.ToString():"")).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;}
}
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