#52040 (Java21) No.2 素因数ゲーム

• 問題: No.2 素因数ゲーム
• ユーザー: threepipes_s
• 提出日時: 2015-10-05 18:54:49
• 言語: Java21 (openjdk 21)
• 結果: AC
• 実行時間: 47 ms / 5,000 ms
• コード長: 2,381 bytes
• コンパイル時間: 3,563 ms
• コンパイル使用メモリ: 76,876 KB
• 実行使用メモリ: 49,960 KB
• 最終ジャッジ日時: 2023-08-27 04:08:55
• 合計ジャッジ時間: 5,761 ms
• ジャッジサーバーID （参考情報）: judge13 / judge12

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	46 ms; 49,272 KB
testcase_01	AC	47 ms; 49,304 KB
testcase_02	AC	47 ms; 49,272 KB
testcase_03	AC	47 ms; 49,364 KB
testcase_04	AC	47 ms; 49,284 KB
testcase_05	AC	46 ms; 49,448 KB
testcase_06	AC	46 ms; 49,364 KB
testcase_07	AC	46 ms; 49,248 KB
testcase_08	AC	45 ms; 49,256 KB
testcase_09	AC	46 ms; 49,440 KB
testcase_10	AC	46 ms; 49,264 KB
testcase_11	AC	46 ms; 49,484 KB
testcase_12	AC	45 ms; 47,396 KB
testcase_13	AC	46 ms; 49,400 KB
testcase_14	AC	46 ms; 49,960 KB
testcase_15	AC	46 ms; 49,304 KB
testcase_16	AC	46 ms; 49,288 KB
testcase_17	AC	47 ms; 49,820 KB
testcase_18	AC	46 ms; 49,360 KB
testcase_19	AC	47 ms; 49,412 KB
testcase_20	AC	46 ms; 49,252 KB
testcase_21	AC	46 ms; 49,360 KB
testcase_22	AC	46 ms; 49,312 KB
testcase_23	AC	46 ms; 49,372 KB
testcase_24	AC	46 ms; 49,412 KB
testcase_25	AC	46 ms; 49,684 KB
testcase_26	AC	46 ms; 49,316 KB
testcase_27	AC	46 ms; 49,380 KB
testcase_28	AC	46 ms; 49,448 KB
testcase_29	AC	47 ms; 49,300 KB
testcase_30	AC	46 ms; 49,380 KB

ソースコード

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.BitSet;
import java.util.HashMap;

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();
		int n = in.nextInt();
		final int N = n;
		MultiSet<Integer> set = new MultiSet<>();
		for(int i=2; i*i<=N; i++){
			while(n%i==0){
				set.add(i);
				n /= i;
			}
		}
		if(n > 1) set.add(n);
		int res = 0;
		for(int i: set.values()){
			res ^= i;
		}
		System.out.println(res==0 ? "Bob" : "Alice");
	}
}

class MultiSet<T> extends HashMap<T, Integer>{
	@Override
	public Integer get(Object key) {
		if(this.containsKey(key)) return super.get(key);
		return 0;
	}
	public void add(T key){
		if(this.containsKey(key)) super.put(key, super.get(key)+1);
		else super.put(key, 1);
	}
	public void add(T key, int val){
		if(this.containsKey(key)) super.put(key, super.get(key)+val);
		else super.put(key, val);
	}
}

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 print(String str){out.print(str);}
	public void close(){out.close();}
}

class ContestScanner{
	BufferedReader reader;
	String[] line;
	int idx;
	public ContestScanner() throws FileNotFoundException{
		reader = new BufferedReader(new InputStreamReader(System.in));
	}
	
	public String nextToken() throws IOException{
		if(line == null || line.length <= idx){
			line = reader.readLine().trim().split(" ");
			idx = 0;
		}
		return line[idx++];
	}
	
	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());
	}
}