結果

問題 No.895 MESE
ユーザー fgwiebfaoishfgwiebfaoish
提出日時 2020-07-14 16:50:38
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 160 ms / 2,000 ms
コード長 4,316 bytes
コンパイル時間 1,099 ms
コンパイル使用メモリ 117,460 KB
実行使用メモリ 32,172 KB
最終ジャッジ日時 2024-04-28 21:21:47
合計ジャッジ時間 4,629 ms
ジャッジサーバーID
(参考情報)
judge3 / judge2
このコードへのチャレンジ
(要ログイン)

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 27 ms
25,908 KB
testcase_01 AC 26 ms
23,856 KB
testcase_02 AC 26 ms
23,984 KB
testcase_03 AC 26 ms
23,984 KB
testcase_04 AC 27 ms
23,984 KB
testcase_05 AC 27 ms
23,832 KB
testcase_06 AC 26 ms
24,236 KB
testcase_07 AC 26 ms
26,160 KB
testcase_08 AC 27 ms
23,984 KB
testcase_09 AC 27 ms
24,084 KB
testcase_10 AC 28 ms
25,952 KB
testcase_11 AC 28 ms
24,368 KB
testcase_12 AC 27 ms
25,948 KB
testcase_13 AC 79 ms
27,284 KB
testcase_14 AC 119 ms
29,320 KB
testcase_15 AC 123 ms
25,656 KB
testcase_16 AC 89 ms
26,756 KB
testcase_17 AC 57 ms
27,180 KB
testcase_18 AC 151 ms
32,168 KB
testcase_19 AC 148 ms
30,316 KB
testcase_20 AC 155 ms
30,276 KB
testcase_21 AC 141 ms
30,412 KB
testcase_22 AC 160 ms
30,260 KB
testcase_23 AC 148 ms
30,260 KB
testcase_24 AC 144 ms
32,172 KB
testcase_25 AC 154 ms
30,428 KB
testcase_26 AC 150 ms
30,484 KB
testcase_27 AC 143 ms
28,268 KB
testcase_28 AC 152 ms
30,140 KB
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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 m=s[0]+s[1]+s[2];
		Cb r=new Cb(m<<1);
		var a=new Mint[m];
		for(int i = 1;i<=s[0];i++) {
			Mint p=((Mint)r.C1(m-2-i,s[0]-i))*r.C1(m-3-s[0]+1,s[1]-1);
			a[1]+=p;
			a[m-i]-=p;
		}
		Mint g=1,ans=0;
		for(int i = 1;i<m;i++,g*=2) {
			a[i]+=a[i-1];
			ans+=g*a[i];
		}
		Console.WriteLine("{0}",ans);
	}
}
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?(r[n]*Mi(r[n-k]))%mod:0;}
	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);u-=t*v;(u,v)=(v,u);}
		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);
			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;}
}
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