結果

問題 No.361 門松ゲーム2
ユーザー threepipes_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 #
プレゼンテーションモードにする

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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