結果

問題 No.955 ax^2+bx+c=0
ユーザー uwiuwi
提出日時 2019-12-18 14:41:01
言語 Java21
(openjdk 21)
結果
WA  
実行時間 -
コード長 5,083 bytes
コンパイル時間 4,296 ms
コンパイル使用メモリ 87,648 KB
実行使用メモリ 54,260 KB
最終ジャッジ日時 2024-07-07 00:45:32
合計ジャッジ時間 18,323 ms
ジャッジサーバーID
(参考情報)
judge3 / judge1
このコードへのチャレンジ
(要ログイン)

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 109 ms
41,104 KB
testcase_01 AC 109 ms
39,804 KB
testcase_02 AC 47 ms
37,076 KB
testcase_03 AC 47 ms
37,100 KB
testcase_04 AC 46 ms
36,816 KB
testcase_05 AC 46 ms
36,572 KB
testcase_06 AC 47 ms
37,020 KB
testcase_07 AC 46 ms
36,540 KB
testcase_08 AC 46 ms
36,572 KB
testcase_09 AC 47 ms
37,020 KB
testcase_10 AC 46 ms
37,088 KB
testcase_11 AC 45 ms
37,048 KB
testcase_12 AC 47 ms
36,884 KB
testcase_13 AC 48 ms
37,128 KB
testcase_14 AC 99 ms
41,200 KB
testcase_15 AC 95 ms
41,080 KB
testcase_16 AC 108 ms
40,076 KB
testcase_17 AC 104 ms
41,196 KB
testcase_18 AC 109 ms
39,816 KB
testcase_19 AC 107 ms
39,816 KB
testcase_20 AC 96 ms
39,608 KB
testcase_21 AC 109 ms
40,928 KB
testcase_22 AC 106 ms
40,052 KB
testcase_23 AC 111 ms
39,868 KB
testcase_24 AC 87 ms
40,028 KB
testcase_25 AC 113 ms
41,228 KB
testcase_26 AC 105 ms
40,804 KB
testcase_27 AC 106 ms
39,944 KB
testcase_28 AC 105 ms
41,092 KB
testcase_29 AC 94 ms
40,036 KB
testcase_30 AC 110 ms
41,256 KB
testcase_31 AC 111 ms
40,044 KB
testcase_32 AC 103 ms
40,032 KB
testcase_33 AC 105 ms
41,104 KB
testcase_34 WA -
testcase_35 WA -
testcase_36 WA -
testcase_37 WA -
testcase_38 WA -
testcase_39 WA -
testcase_40 WA -
testcase_41 WA -
testcase_42 WA -
testcase_43 WA -
testcase_44 WA -
testcase_45 WA -
testcase_46 WA -
testcase_47 WA -
testcase_48 WA -
testcase_49 WA -
testcase_50 WA -
testcase_51 WA -
testcase_52 WA -
testcase_53 WA -
testcase_54 WA -
testcase_55 WA -
testcase_56 WA -
testcase_57 WA -
testcase_58 AC 95 ms
41,096 KB
testcase_59 AC 101 ms
41,040 KB
testcase_60 AC 46 ms
36,572 KB
testcase_61 AC 46 ms
37,076 KB
testcase_62 AC 105 ms
41,156 KB
testcase_63 AC 96 ms
39,952 KB
testcase_64 AC 46 ms
37,076 KB
testcase_65 AC 106 ms
39,756 KB
testcase_66 AC 46 ms
37,020 KB
testcase_67 AC 90 ms
39,884 KB
testcase_68 AC 45 ms
37,156 KB
testcase_69 AC 113 ms
41,136 KB
testcase_70 AC 113 ms
41,260 KB
testcase_71 AC 47 ms
36,640 KB
testcase_72 AC 46 ms
36,752 KB
testcase_73 AC 106 ms
41,028 KB
testcase_74 AC 105 ms
40,908 KB
testcase_75 AC 47 ms
37,044 KB
testcase_76 AC 50 ms
36,768 KB
testcase_77 AC 103 ms
41,336 KB
testcase_78 AC 108 ms
39,964 KB
testcase_79 AC 92 ms
41,164 KB
testcase_80 AC 47 ms
36,976 KB
testcase_81 AC 107 ms
39,776 KB
testcase_82 AC 93 ms
40,976 KB
testcase_83 AC 107 ms
40,840 KB
testcase_84 AC 106 ms
40,796 KB
testcase_85 AC 107 ms
39,760 KB
testcase_86 AC 97 ms
40,816 KB
testcase_87 AC 107 ms
39,932 KB
testcase_88 AC 93 ms
41,152 KB
testcase_89 AC 107 ms
41,128 KB
testcase_90 AC 117 ms
41,112 KB
testcase_91 AC 115 ms
40,976 KB
testcase_92 AC 46 ms
36,896 KB
testcase_93 AC 46 ms
36,572 KB
testcase_94 AC 110 ms
40,136 KB
testcase_95 AC 97 ms
40,120 KB
testcase_96 AC 111 ms
41,008 KB
testcase_97 AC 102 ms
40,172 KB
testcase_98 AC 113 ms
41,000 KB
testcase_99 AC 111 ms
41,216 KB
testcase_100 AC 46 ms
36,572 KB
testcase_101 AC 90 ms
40,812 KB
testcase_102 AC 109 ms
40,120 KB
testcase_103 AC 110 ms
39,916 KB
testcase_104 AC 105 ms
40,892 KB
testcase_105 AC 107 ms
40,624 KB
testcase_106 AC 104 ms
40,952 KB
testcase_107 AC 105 ms
39,728 KB
testcase_108 AC 102 ms
41,076 KB
testcase_109 AC 94 ms
39,904 KB
testcase_110 AC 93 ms
41,072 KB
testcase_111 AC 94 ms
40,168 KB
testcase_112 AC 111 ms
39,828 KB
testcase_113 AC 104 ms
40,968 KB
testcase_114 AC 94 ms
40,876 KB
testcase_115 AC 102 ms
40,856 KB
testcase_116 AC 106 ms
39,756 KB
testcase_117 AC 94 ms
40,164 KB
testcase_118 AC 93 ms
40,860 KB
testcase_119 AC 105 ms
39,800 KB
testcase_120 AC 90 ms
39,804 KB
testcase_121 AC 90 ms
39,944 KB
testcase_122 WA -
testcase_123 AC 94 ms
39,848 KB
testcase_124 AC 105 ms
41,024 KB
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ソースコード

diff #

package adv2019;
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 D17 {
	InputStream is;
	PrintWriter out;
	String INPUT = "";
	
	void solve()
	{
		long a = nl(), b = nl(), c = nl();
		long[][] res = solveQuad(a, b, c);
		if(res == null){
			out.println(-1);
		}else{
			out.println(res.length);
			for(long[] u : res){
				out.printf("%.14f\n", (u[0] + u[1] * Math.sqrt(u[2])) / u[3]);
			}
		}
	}
	
	public static long[][] solveQuad(long A, long B, long C)
	{
		if(A == 0){
			if(B == 0){
				return C == 0 ? null : new long[0][];
			}else{
				return new long[][]{reducex(new long[]{-C, 0, 0, B})};
			}
		}
		
		long D = B*B-4*A*C;
		if(D < 0){
			return new long[0][];
		}else if(D == 0){
			return new long[][]{reducex(new long[]{-B, 0, 0, 2L*A})};
		}else{
			if(A > 0){
				return new long[][]{
						reducex(new long[]{-B, -1, D, 2L*A}),
						reducex(new long[]{-B, 1, D, 2L*A})
				};
			}else{
				return new long[][]{
						reducex(new long[]{-B, 1, D, 2L*A}),
						reducex(new long[]{-B, -1, D, 2L*A})
				};
			}
		}
	}
	
	public static long[] reducex(long[] f)
	{
		return f;
//		// f[2] < 0 ??
//		if(f[2] == 0)f[1] = 0;
//		if(f[1] == 0)f[2] = 0;
//		if(f[2] == 0 || f[1] == 0){
//			// normal fraction
//			if(f[3] == 0) { // n/0
//				f[0] = 1;
//			}else if(f[0] == 0) { // 0/n
//				f[3] = 1;
//			}else {
//				if(f[3] < 0) { // -a/-b ->a/b
//					f[0] = -f[0];
//					f[3] = -f[3];
//				}
//				long a = Math.abs(f[0]), b = f[3];
//				while (b > 0) {
//					long c = a;
//					a = b;
//					b = c % b;
//				}
//				f[0] /= a;
//				f[3] /= a;
//			}
//		}else{
//			for(long p = 2;p * p <= f[2];p++){
//				while(f[2] % (p*p) == 0){
//					f[1] *= p;
//					f[2] /= p*p;
//				}
//			}
//			if(f[3] == 0) { // n/0
//				f[0] = 1;
//				f[1] = f[2] = 0;
//			}else {
//				if(f[3] < 0) { // -a/-b ->a/b
//					f[0] = -f[0];
//					f[1] = -f[1];
//					f[3] = -f[3];
//				}
//				long a = Math.abs(f[0]), b = f[3];
//				while (b > 0) {
//					long c = a;
//					a = b;
//					b = c % b;
//				}
//				b = Math.abs(f[1]);
//				while (b > 0) {
//					long c = a;
//					a = b;
//					b = c % b;
//				}
//				
//				f[0] /= a;
//				f[1] /= a;
//				f[3] /= a;
//			}
//		}
//		return f;
	}

	
	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");
//		Thread t = new Thread(null, null, "~", Runtime.getRuntime().maxMemory()){
//			@Override
//			public void run() {
//				long s = System.currentTimeMillis();
//				solve();
//				out.flush();
//				if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms");
//			}
//		};
//		t.start();
//		t.join();
	}
	
	public static void main(String[] args) throws Exception { new D17().run(); }
	
	private byte[] inbuf = new byte[1024];
	public 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 int[] na(int n)
	{
		int[] a = new int[n];
		for(int i = 0;i < n;i++)a[i] = ni();
		return a;
	}
	
	private long[] nal(int n)
	{
		long[] a = new long[n];
		for(int i = 0;i < n;i++)a[i] = nl();
		return a;
	}
	
	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[][] nmi(int n, int m) {
		int[][] map = new int[n][];
		for(int i = 0;i < n;i++)map[i] = na(m);
		return map;
	}
	
	private int ni() { return (int)nl(); }
	
	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)); }
}
0