#409724 (Java21) No.955 ax^2+bx+c=0

• 問題: No.955 ax^2+bx+c=0
• ユーザー: ks2m
• 提出日時: 2019-12-18 00:51:03
• 言語: Java21 (openjdk 21)
• 結果: WA
• 実行時間: -
• コード長: 1,862 bytes
• コンパイル時間: 2,955 ms
• コンパイル使用メモリ: 76,984 KB
• 実行使用メモリ: 52,180 KB
• 最終ジャッジ日時: 2023-09-21 05:31:06
• 合計ジャッジ時間: 12,631 ms
• ジャッジサーバーID （参考情報）: judge14 / judge13

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	63 ms; 50,244 KB
testcase_01	AC	45 ms; 49,512 KB
testcase_02	AC	45 ms; 49,180 KB
testcase_03	AC	45 ms; 49,148 KB
testcase_04	AC	45 ms; 49,388 KB
testcase_05	AC	45 ms; 49,396 KB
testcase_06	AC	45 ms; 49,396 KB
testcase_07	AC	45 ms; 49,260 KB
testcase_08	AC	45 ms; 49,316 KB
testcase_09	AC	44 ms; 49,148 KB
testcase_10	AC	44 ms; 49,400 KB
testcase_11	AC	45 ms; 49,456 KB
testcase_12	AC	45 ms; 49,268 KB
testcase_13	AC	44 ms; 49,388 KB
testcase_14	AC	46 ms; 49,268 KB
testcase_15	AC	45 ms; 49,400 KB
testcase_16	AC	45 ms; 49,268 KB
testcase_17	AC	45 ms; 49,668 KB
testcase_18	AC	45 ms; 49,408 KB
testcase_19	AC	46 ms; 49,772 KB
testcase_20	AC	45 ms; 49,400 KB
testcase_21	AC	45 ms; 49,268 KB
testcase_22	AC	45 ms; 49,492 KB
testcase_23	AC	45 ms; 49,364 KB
testcase_24	AC	45 ms; 49,220 KB
testcase_25	AC	45 ms; 49,400 KB
testcase_26	AC	45 ms; 49,584 KB
testcase_27	AC	45 ms; 49,392 KB
testcase_28	AC	46 ms; 49,616 KB
testcase_29	AC	49 ms; 49,876 KB
testcase_30	AC	46 ms; 49,224 KB
testcase_31	AC	45 ms; 49,180 KB
testcase_32	AC	46 ms; 49,392 KB
testcase_33	AC	46 ms; 49,288 KB
testcase_34	WA	-
testcase_35	WA	-
testcase_36	WA	-
testcase_37	AC	63 ms; 50,288 KB
testcase_38	AC	57 ms; 50,312 KB
testcase_39	AC	57 ms; 50,288 KB
testcase_40	WA	-
testcase_41	WA	-
testcase_42	WA	-
testcase_43	AC	62 ms; 50,416 KB
testcase_44	AC	58 ms; 50,284 KB
testcase_45	AC	58 ms; 50,308 KB
testcase_46	AC	65 ms; 50,368 KB
testcase_47	AC	59 ms; 50,316 KB
testcase_48	AC	59 ms; 50,352 KB
testcase_49	WA	-
testcase_50	WA	-
testcase_51	WA	-
testcase_52	AC	64 ms; 50,700 KB
testcase_53	AC	58 ms; 50,280 KB
testcase_54	AC	63 ms; 50,364 KB
testcase_55	WA	-
testcase_56	WA	-
testcase_57	WA	-
testcase_58	AC	59 ms; 50,356 KB
testcase_59	AC	59 ms; 50,376 KB
testcase_60	AC	45 ms; 49,224 KB
testcase_61	AC	46 ms; 49,180 KB
testcase_62	AC	64 ms; 50,484 KB
testcase_63	AC	64 ms; 50,572 KB
testcase_64	AC	46 ms; 49,156 KB
testcase_65	AC	64 ms; 50,396 KB
testcase_66	AC	46 ms; 49,516 KB
testcase_67	AC	63 ms; 50,356 KB
testcase_68	AC	46 ms; 49,272 KB
testcase_69	AC	63 ms; 50,352 KB
testcase_70	AC	61 ms; 50,716 KB
testcase_71	AC	46 ms; 49,236 KB
testcase_72	AC	46 ms; 49,868 KB
testcase_73	AC	66 ms; 50,244 KB
testcase_74	AC	66 ms; 50,380 KB
testcase_75	AC	47 ms; 49,280 KB
testcase_76	AC	46 ms; 49,880 KB
testcase_77	AC	62 ms; 50,384 KB
testcase_78	AC	66 ms; 50,520 KB
testcase_79	AC	63 ms; 50,304 KB
testcase_80	AC	45 ms; 49,136 KB
testcase_81	AC	61 ms; 50,472 KB
testcase_82	AC	45 ms; 49,224 KB
testcase_83	AC	46 ms; 49,408 KB
testcase_84	AC	45 ms; 49,396 KB
testcase_85	AC	46 ms; 49,232 KB
testcase_86	AC	45 ms; 49,236 KB
testcase_87	AC	45 ms; 49,264 KB
testcase_88	AC	44 ms; 49,272 KB
testcase_89	AC	44 ms; 49,548 KB
testcase_90	AC	46 ms; 49,464 KB
testcase_91	AC	45 ms; 49,288 KB
testcase_92	AC	46 ms; 49,580 KB
testcase_93	AC	46 ms; 49,584 KB
testcase_94	AC	47 ms; 49,540 KB
testcase_95	AC	48 ms; 49,396 KB
testcase_96	AC	45 ms; 47,264 KB
testcase_97	AC	45 ms; 49,504 KB
testcase_98	AC	46 ms; 49,468 KB
testcase_99	AC	45 ms; 49,276 KB
testcase_100	AC	46 ms; 49,708 KB
testcase_101	AC	45 ms; 49,280 KB
testcase_102	AC	45 ms; 49,288 KB
testcase_103	AC	45 ms; 49,224 KB
testcase_104	AC	46 ms; 49,444 KB
testcase_105	AC	46 ms; 49,284 KB
testcase_106	AC	46 ms; 49,160 KB
testcase_107	AC	46 ms; 49,276 KB
testcase_108	AC	46 ms; 49,152 KB
testcase_109	AC	45 ms; 49,332 KB
testcase_110	AC	46 ms; 49,768 KB
testcase_111	AC	46 ms; 49,344 KB
testcase_112	AC	46 ms; 49,420 KB
testcase_113	AC	46 ms; 49,780 KB
testcase_114	AC	46 ms; 49,424 KB
testcase_115	AC	46 ms; 49,228 KB
testcase_116	AC	46 ms; 49,472 KB
testcase_117	AC	46 ms; 49,536 KB
testcase_118	AC	46 ms; 49,160 KB
testcase_119	AC	46 ms; 49,304 KB
testcase_120	AC	45 ms; 49,540 KB
testcase_121	AC	45 ms; 49,532 KB
testcase_122	AC	59 ms; 48,620 KB
testcase_123	AC	58 ms; 48,588 KB
testcase_124	AC	59 ms; 50,372 KB

ソースコード

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.math.BigDecimal;

public class Main {
	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String[] sa = br.readLine().split(" ");
		long a = Integer.parseInt(sa[0]);
		long b = Integer.parseInt(sa[1]);
		long c = Integer.parseInt(sa[2]);
		br.close();

		if (a == 0) {
			if (b == 0) {
				if (c == 0) {
					System.out.println(-1);
				} else {
					System.out.println(0);
				}
			} else {
				System.out.println(1);
				System.out.println((double) -c / b);
			}
		} else if (b * b == 4 * a * c) {
			System.out.println(1);
			System.out.println((double) -b / 2 / a);
		} else if (b * b > 4 * a * c) {
			long d = b * b - 4 * a * c;
			BigDecimal bd = BigDecimal.valueOf(d);
			BigDecimal sq = BigDecimal.valueOf((long) Math.sqrt(d));
			StringBuilder sb = new StringBuilder("0.");
			for (int i = 0; i < 20; i++) {
				for (int j = 0; j < 10; j++) {
					BigDecimal v = new BigDecimal(sb.toString() + "1");
					BigDecimal tmp = sq.add(v);
					tmp = tmp.multiply(tmp);
					if (tmp.compareTo(bd) > 0) {
						break;
					}
					sq = sq.add(v);
				}
				sb.append("0");
			}
			System.out.println(2);
			BigDecimal ba = BigDecimal.valueOf(a);
			BigDecimal two = BigDecimal.valueOf(2);
			BigDecimal mb = BigDecimal.valueOf(b).negate();
			BigDecimal ans1 = mb.subtract(sq).divide(two).divide(ba, 20, BigDecimal.ROUND_HALF_UP);
			BigDecimal ans2 = mb.add(sq).divide(two).divide(ba, 20, BigDecimal.ROUND_HALF_UP);
			if (ans1.compareTo(ans2) < 0) {
				System.out.println(ans1.toPlainString());
				System.out.println(ans2.toPlainString());
			} else {
				System.out.println(ans2.toPlainString());
				System.out.println(ans1.toPlainString());
			}
		} else {
			System.out.println(0);
		}
	}
}