#960225 (Java21) No.2672 Subset Xor Sum

• 問題: No.2672 Subset Xor Sum
• ユーザー: ks2m
• 提出日時: 2024-03-15 22:00:29
• 言語: Java21 (openjdk 21)
• 結果: AC
• 実行時間: 364 ms / 2,000 ms
• コード長: 1,128 bytes
• コンパイル時間: 6,497 ms
• コンパイル使用メモリ: 77,724 KB
• 実行使用メモリ: 94,816 KB
• 最終ジャッジ日時: 2024-03-16 17:41:43
• 合計ジャッジ時間: 13,275 ms
• ジャッジサーバーID （参考情報）: judge15 / judge13

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	53 ms; 53,984 KB
testcase_01	AC	51 ms; 53,988 KB
testcase_02	AC	52 ms; 53,984 KB
testcase_03	AC	53 ms; 53,968 KB
testcase_04	AC	51 ms; 53,992 KB
testcase_05	AC	53 ms; 52,012 KB
testcase_06	AC	52 ms; 53,972 KB
testcase_07	AC	54 ms; 53,988 KB
testcase_08	AC	52 ms; 53,964 KB
testcase_09	AC	54 ms; 53,992 KB
testcase_10	AC	52 ms; 53,972 KB
testcase_11	AC	52 ms; 53,972 KB
testcase_12	AC	52 ms; 53,976 KB
testcase_13	AC	52 ms; 53,968 KB
testcase_14	AC	52 ms; 52,032 KB
testcase_15	AC	54 ms; 53,952 KB
testcase_16	AC	52 ms; 53,972 KB
testcase_17	AC	52 ms; 53,964 KB
testcase_18	AC	52 ms; 53,988 KB
testcase_19	AC	53 ms; 53,972 KB
testcase_20	AC	54 ms; 53,960 KB
testcase_21	AC	55 ms; 53,984 KB
testcase_22	AC	59 ms; 53,984 KB
testcase_23	AC	54 ms; 53,988 KB
testcase_24	AC	52 ms; 51,884 KB
testcase_25	AC	52 ms; 53,960 KB
testcase_26	AC	52 ms; 53,972 KB
testcase_27	AC	52 ms; 54,000 KB
testcase_28	AC	54 ms; 53,980 KB
testcase_29	AC	53 ms; 53,984 KB
testcase_30	AC	53 ms; 53,972 KB
testcase_31	AC	361 ms; 94,384 KB
testcase_32	AC	278 ms; 69,556 KB
testcase_33	AC	225 ms; 66,364 KB
testcase_34	AC	351 ms; 81,164 KB
testcase_35	AC	360 ms; 94,256 KB
testcase_36	AC	364 ms; 82,292 KB
testcase_37	AC	347 ms; 90,136 KB
testcase_38	AC	278 ms; 69,816 KB
testcase_39	AC	359 ms; 94,564 KB
testcase_40	AC	185 ms; 61,884 KB
testcase_41	AC	299 ms; 74,500 KB
testcase_42	AC	358 ms; 94,816 KB
testcase_43	AC	339 ms; 81,920 KB
testcase_44	AC	359 ms; 94,168 KB
testcase_45	AC	329 ms; 80,548 KB
testcase_46	AC	87 ms; 54,992 KB
testcase_47	AC	95 ms; 55,388 KB
testcase_48	AC	88 ms; 55,288 KB
testcase_49	AC	87 ms; 55,292 KB
testcase_50	AC	87 ms; 55,152 KB
testcase_51	AC	87 ms; 55,016 KB
testcase_52	AC	88 ms; 55,196 KB
testcase_53	AC	86 ms; 55,132 KB
testcase_54	AC	86 ms; 55,260 KB
testcase_55	AC	89 ms; 55,656 KB
testcase_56	AC	90 ms; 55,392 KB
testcase_57	AC	82 ms; 54,776 KB
testcase_58	AC	58 ms; 53,980 KB
testcase_59	AC	54 ms; 53,976 KB
testcase_60	AC	63 ms; 54,632 KB
testcase_61	AC	57 ms; 52,044 KB
testcase_62	AC	73 ms; 54,776 KB
testcase_63	AC	68 ms; 54,860 KB
testcase_64	AC	70 ms; 54,752 KB
testcase_65	AC	58 ms; 53,984 KB
testcase_66	AC	50 ms; 53,980 KB
testcase_67	AC	51 ms; 53,980 KB

ソースコード

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Arrays;

public class Main {
	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int n = Integer.parseInt(br.readLine());
		String[] sa = br.readLine().split(" ");
		int[] a = new int[n];
		for (int i = 0; i < n; i++) {
			a[i] = Integer.parseInt(sa[i]);
		}
		br.close();

		int m = 5000;
		int[] c = new int[m + 1];
		int xor = 0;
		for (int i = 0; i < n; i++) {
			xor ^= a[i];
			c[a[i]]++;
		}
		if (xor != 0) {
			System.out.println("No");
			return;
		}

		if (n > 2) {
			for (int i = 0; i < c.length; i++) {
				if (c[i] >= 2) {
					System.out.println("Yes");
					return;
				}
			}
		}

		boolean[] dp = new boolean[8200];
		dp[0] = true;
		for (int i = 0; i < n - 1; i++) {
			boolean[] wk = Arrays.copyOf(dp, dp.length);
			wk[0] = false;
			for (int j = 0; j < dp.length; j++) {
				if (dp[j]) {
					wk[j ^ a[i]] = true;
				}
			}
			if (wk[0]) {
				System.out.println("Yes");
				return;
			}
			dp = wk;
		}
		System.out.println("No");
	}
}