結果

問題 No.183 たのしい排他的論理和(EASY)
ユーザー uwiuwi
提出日時 2015-04-16 23:25:27
言語 Java21
(openjdk 21)
結果
AC  
実行時間 61 ms / 5,000 ms
コード長 3,276 bytes
コンパイル時間 4,121 ms
コンパイル使用メモリ 80,304 KB
実行使用メモリ 37,000 KB
最終ジャッジ日時 2024-06-29 01:42:36
合計ジャッジ時間 5,935 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge1
このコードへのチャレンジ
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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 51 ms
36,828 KB
testcase_01 AC 51 ms
36,548 KB
testcase_02 AC 51 ms
36,484 KB
testcase_03 AC 50 ms
36,744 KB
testcase_04 AC 50 ms
37,000 KB
testcase_05 AC 50 ms
36,964 KB
testcase_06 AC 51 ms
36,752 KB
testcase_07 AC 59 ms
36,724 KB
testcase_08 AC 59 ms
36,992 KB
testcase_09 AC 57 ms
36,728 KB
testcase_10 AC 57 ms
36,848 KB
testcase_11 AC 59 ms
36,408 KB
testcase_12 AC 51 ms
36,864 KB
testcase_13 AC 50 ms
36,752 KB
testcase_14 AC 55 ms
36,756 KB
testcase_15 AC 61 ms
36,804 KB
testcase_16 AC 52 ms
36,752 KB
testcase_17 AC 53 ms
36,740 KB
testcase_18 AC 60 ms
36,664 KB
testcase_19 AC 52 ms
36,864 KB
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ソースコード

diff # 

package contest;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.InputMismatchException;

public class Q481 {
	InputStream is;
	PrintWriter out;
	String INPUT = "";
	
	void solve()
	{
		int n = ni();
		long[] a = new long[n];
		for(int i = 0;i < n;i++){
			a[i] = nl();
		}
		
		long[] bas = basis(a);
		long ret = 1;
		for(long v : bas){
			if(v != 0)ret *= 2;
		}
		out.println(ret);
	}
	
	public static long[] basis(long[] a)
	{
		long[] bas = new long[64];
		for(long x : a){
			int h = 63-Long.numberOfLeadingZeros(x);
			while(x != 0){
				if(bas[h] != 0){
					x ^= bas[h];
					h = 63-Long.numberOfLeadingZeros(x);
				}else{
					bas[h] = x;
				}
			}
		}
		return bas;
	}
	
	void run() throws Exception
	{
		is = INPUT.isEmpty() ? System.in : new ByteArrayInputStream(INPUT.getBytes());
		out = new PrintWriter(System.out);
		
		long s = System.currentTimeMillis();
		solve();
		out.flush();
		if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms");
	}
	
	public static void main(String[] args) throws Exception { new Q481().run(); }
	
	private byte[] inbuf = new byte[1024];
	private int lenbuf = 0, ptrbuf = 0;
	
	private int readByte()
	{
		if(lenbuf == -1)throw new InputMismatchException();
		if(ptrbuf >= lenbuf){
			ptrbuf = 0;
			try { lenbuf = is.read(inbuf); } catch (IOException e) { throw new InputMismatchException(); }
			if(lenbuf <= 0)return -1;
		}
		return inbuf[ptrbuf++];
	}
	
	private boolean isSpaceChar(int c) { return !(c >= 33 && c <= 126); }
	private int skip() { int b; while((b = readByte()) != -1 && isSpaceChar(b)); return b; }
	
	private double nd() { return Double.parseDouble(ns()); }
	private char nc() { return (char)skip(); }
	
	private String ns()
	{
		int b = skip();
		StringBuilder sb = new StringBuilder();
		while(!(isSpaceChar(b))){ // when nextLine, (isSpaceChar(b) && b != ' ')
			sb.appendCodePoint(b);
			b = readByte();
		}
		return sb.toString();
	}
	
	private char[] ns(int n)
	{
		char[] buf = new char[n];
		int b = skip(), p = 0;
		while(p < n && !(isSpaceChar(b))){
			buf[p++] = (char)b;
			b = readByte();
		}
		return n == p ? buf : Arrays.copyOf(buf, p);
	}
	
	private char[][] nm(int n, int m)
	{
		char[][] map = new char[n][];
		for(int i = 0;i < n;i++)map[i] = ns(m);
		return map;
	}
	
	private int[] na(int n)
	{
		int[] a = new int[n];
		for(int i = 0;i < n;i++)a[i] = ni();
		return a;
	}
	
	private int ni()
	{
		int num = 0, b;
		boolean minus = false;
		while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-'));
		if(b == '-'){
			minus = true;
			b = readByte();
		}
		
		while(true){
			if(b >= '0' && b <= '9'){
				num = num * 10 + (b - '0');
			}else{
				return minus ? -num : num;
			}
			b = readByte();
		}
	}
	
	private long nl()
	{
		long num = 0;
		int b;
		boolean minus = false;
		while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-'));
		if(b == '-'){
			minus = true;
			b = readByte();
		}
		
		while(true){
			if(b >= '0' && b <= '9'){
				num = num * 10 + (b - '0');
			}else{
				return minus ? -num : num;
			}
			b = readByte();
		}
	}
	
	private static void tr(Object... o) { System.out.println(Arrays.deepToString(o)); }
}
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