結果

問題 No.361 門松ゲーム2
ユーザー threepipes_sthreepipes_s
提出日時 2016-04-17 23:17:08
言語 Java
(openjdk 23)
結果
AC  
実行時間 204 ms / 2,000 ms
コード長 2,838 bytes
コンパイル時間 2,506 ms
コンパイル使用メモリ 81,016 KB
実行使用メモリ 41,200 KB
最終ジャッジ日時 2024-10-04 10:53:40
合計ジャッジ時間 5,520 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge5
このコードへのチャレンジ
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ファイルパターン 結果
other AC * 28
権限があれば一括ダウンロードができます

ソースコード

diff # 

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.BitSet;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
 
public class Main{
	public static void main(String[] args){
		try {(new Solve()).solve();}
		catch (NumberFormatException | IOException e) {e.printStackTrace();}
	}
}
 
class Solve{
	void solve() throws NumberFormatException, IOException{
		final ContestScanner in = new ContestScanner();
		ContestWriter out = new ContestWriter();
		int l = in.nextInt();
		int d = in.nextInt();
		dp = new int[l+1];
		Arrays.fill(dp, -1);
		System.out.println(dfs(l, d)==0?"matsu":"kado");
	}
	
	int[] dp;
	int dfs(int l, int d){
		if(l<6) return 0;
		if(dp[l]>=0) return dp[l];
		BitSet bs = new BitSet();
		for(int i=1; i<l; i++){
			int g1 = dfs(i, d);
			for(int j=i+2; j<=i+d; j++){
				int m = l-i-j;
				if(m<=i || m>=j) continue;
				int grundy = g1^dfs(j,d)^dfs(m, d);
				bs.set(grundy);
			}
		}
		return dp[l] = bs.nextClearBit(0);
	}
}

class MultiSet<T> extends HashMap<T, Integer>{
	@Override
	public Integer get(Object key){return containsKey(key)?super.get(key):0;}
	public void add(T key,int v){put(key,get(key)+v);}
	public void add(T key){put(key,get(key)+1);}
}
 
class ContestWriter{
	private PrintWriter out;
	public ContestWriter(String filename) throws IOException
	{out = new PrintWriter(new BufferedWriter(new FileWriter(filename)));}
	public ContestWriter() throws IOException{out = new PrintWriter(System.out);}
	public void println(String str){out.println(str);}
	public void println(Object str){out.println(str);}
	public void print(String str){out.print(str);}
	public void close(){out.close();}
}
 
class ContestScanner {
	private BufferedReader reader;
	private String[] line;
	private int idx;
	public ContestScanner()throws FileNotFoundException 
	{reader=new BufferedReader(new InputStreamReader(System.in));}
	public ContestScanner(String filename)throws FileNotFoundException
	{reader=new BufferedReader(new InputStreamReader(new FileInputStream(filename)));}
	public String nextToken()throws IOException{if(line==null||line.length<=idx){
	line=reader.readLine().trim().split(" ");idx=0;}return line[idx++];}
	public String readLine()throws IOException{return reader.readLine();}
	public long nextLong()throws IOException,NumberFormatException{return Long.parseLong(nextToken());}
	public int nextInt()throws NumberFormatException,IOException{return(int)nextLong();}
	public double nextDouble()throws NumberFormatException,IOException 
	{return Double.parseDouble(nextToken());}
}
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