#671812 (Java21) No.1577 織姫と彦星2

提出ソース

結果

問題	No.1577 織姫と彦星2
ユーザー	uwi
提出日時	2021-07-02 13:40:13
言語	Java21 (openjdk 21)
結果	AC
実行時間	198 ms / 2,000 ms
コード長	13,792 bytes
コンパイル時間	4,694 ms
コンパイル使用メモリ	93,536 KB
実行使用メモリ	54,660 KB
最終ジャッジ日時	2024-06-28 23:32:11
合計ジャッジ時間	14,555 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
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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	74 ms 50,668 KB
testcase_01	AC	69 ms 50,908 KB
testcase_02	AC	76 ms 51,084 KB
testcase_03	AC	75 ms 50,832 KB
testcase_04	AC	73 ms 51,108 KB
testcase_05	AC	102 ms 51,592 KB
testcase_06	AC	86 ms 51,032 KB
testcase_07	AC	177 ms 54,196 KB
testcase_08	AC	145 ms 52,416 KB
testcase_09	AC	190 ms 54,540 KB
testcase_10	AC	121 ms 52,064 KB
testcase_11	AC	94 ms 51,728 KB
testcase_12	AC	154 ms 54,300 KB
testcase_13	AC	110 ms 51,880 KB
testcase_14	AC	160 ms 54,568 KB
testcase_15	AC	137 ms 52,312 KB
testcase_16	AC	175 ms 54,496 KB
testcase_17	AC	149 ms 54,368 KB
testcase_18	AC	79 ms 50,768 KB
testcase_19	AC	166 ms 54,544 KB
testcase_20	AC	161 ms 54,548 KB
testcase_21	AC	173 ms 54,548 KB
testcase_22	AC	170 ms 54,300 KB
testcase_23	AC	142 ms 52,012 KB
testcase_24	AC	179 ms 54,660 KB
testcase_25	AC	137 ms 52,556 KB
testcase_26	AC	140 ms 52,448 KB
testcase_27	AC	144 ms 54,116 KB
testcase_28	AC	157 ms 54,540 KB
testcase_29	AC	149 ms 54,640 KB
testcase_30	AC	146 ms 54,456 KB
testcase_31	AC	167 ms 54,500 KB
testcase_32	AC	83 ms 51,008 KB
testcase_33	AC	84 ms 51,152 KB
testcase_34	AC	142 ms 52,384 KB
testcase_35	AC	170 ms 54,516 KB
testcase_36	AC	169 ms 54,524 KB
testcase_37	AC	198 ms 54,488 KB
testcase_38	AC	192 ms 54,388 KB
testcase_39	AC	151 ms 52,532 KB
testcase_40	AC	153 ms 52,608 KB
testcase_41	AC	171 ms 54,336 KB
testcase_42	AC	125 ms 53,936 KB
testcase_43	AC	133 ms 54,392 KB
testcase_44	AC	86 ms 51,016 KB
testcase_45	AC	122 ms 52,424 KB
testcase_46	AC	108 ms 51,940 KB
testcase_47	AC	138 ms 54,348 KB
testcase_48	AC	117 ms 51,760 KB
testcase_49	AC	151 ms 54,368 KB
testcase_50	AC	145 ms 52,376 KB
testcase_51	AC	89 ms 51,276 KB
testcase_52	AC	183 ms 54,264 KB
testcase_53	AC	180 ms 54,544 KB
testcase_54	AC	149 ms 54,552 KB
testcase_55	AC	177 ms 54,540 KB
testcase_56	AC	136 ms 52,176 KB
testcase_57	AC	105 ms 51,660 KB

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ソースコード

raw source code

import java.io.*;
import java.util.ArrayDeque;
import java.util.Arrays;
import java.util.InputMismatchException;
import java.util.Queue;
import java.util.function.IntUnaryOperator;
import java.util.function.LongUnaryOperator;

public class P1577_2 {
	InputStream is;
	FastWriter out;

	String INPUT = "";

	public void solve()
	{
		int n = ni();
		int[] a = na(n+2);
		LongHashMapWithoutDeletion imap = imap(a);
		int[] q = new int[n+2];
		int p = 0;
		q[p++] = 0;
		int[] ds = new int[n+2];
		Arrays.fill(ds, Integer.MAX_VALUE / 2);
		ds[0] = 0;
		for(int z = 0;z < p;z++){
			int cur = q[z];
			for(int i = 0;i < 30;i++){
				int key = a[cur] ^ 1<<i;
				if(!imap.containsKey(key))continue;
				int ne = imap.get(key);
				if(ds[ne] > ds[cur] + 1){
					ds[ne] = ds[cur] + 1;
					q[p++] = ne;
				}
			}
		}
		out.println(ds[1] >= Integer.MAX_VALUE / 2 ? -1 : ds[1]-1);
	}

	public static LongHashMapWithoutDeletion imap(int... a)
	{
		LongHashMapWithoutDeletion map = new LongHashMapWithoutDeletion();
		for(int i = 0;i < a.length;i++)map.put(a[i], i);
		return map;
	}

	public static class LongHashMapWithoutDeletion
	{
		int[] first;
		int[] next;
		long[] keys;
		int[] vals;
		int size;
		int scale;

		public LongHashMapWithoutDeletion()
		{
			scale = 1;
			keys = new long[1<<scale];
			vals = new int[1<<scale];
			first = new int[1<<scale];
			next = new int[1<<scale];
			size = 0;
			Arrays.fill(first, -1);
			Arrays.fill(next, -1);
		}

		public void rehash()
		{
			scale++;
			keys = Arrays.copyOf(keys, 1<<scale);
			vals = Arrays.copyOf(vals, 1<<scale);
			first = new int[1<<scale];
			next = new int[1<<scale];
			Arrays.fill(first, -1);
			Arrays.fill(next, -1);
			for(int i = 0;i < 1<<scale-1;i++){
				int h = h(keys[i])&(1<<scale)-1;
				next[i] = first[h];
				first[h] = i;
			}
		}

		public void put(long key, int val)
		{
			int h = h(key)&(1<<scale)-1;
			int ind = search(h, key);
			if(ind >= keys.length){
				rehash();
				h = h(key)&(1<<scale)-1;
			}
			if(ind < size){
				vals[ind] = val;
			}else {
				keys[ind] = key;
				vals[ind] = val;
				next[ind] = first[h];
				first[h] = ind;
				size++;
			}
		}

		public boolean containsKey(long key)
		{
			int h = h(key)&(1<<scale)-1;
			int ind = search(h, key);
			return ind < size;
		}

		public int get(long key)
		{
			int h = h(key)&(1<<scale)-1;
			int ind = search(h, key);
			return ind >= size ? 0 : vals[ind];
		}

		private int search(int h, long key)
		{
			for(int f = first[h];f != -1;f = next[f]){
				if(keys[f] == key)return f;
			}
			return size;
		}

		private int h(long x)
		{
			x ^= x>>>33;
			x *= 0xff51afd7ed558ccdL;
			x ^= x>>>33;
			x *= 0xc4ceb9fe1a85ec53L;
			x ^= x>>>33;
			return (int)(x^x>>>32);
		}
	}

	public static void main(String[] args) {
		new P1577_2().run();
	}

	public void run()
	{
		long S = System.currentTimeMillis();
		is = INPUT.isEmpty() ? System.in : new ByteArrayInputStream(INPUT.getBytes());
		out = new FastWriter(System.out);

		solve();
		out.flush();
		long G = System.currentTimeMillis();
		tr(G-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();
	}

	private boolean eof()
	{
		if(lenbuf == -1)return true;
		int lptr = ptrbuf;
		while(lptr < lenbuf)if(!isSpaceChar(inbuf[lptr++]))return false;

		try {
			is.mark(1000);
			while(true){
				int b = is.read();
				if(b == -1){
					is.reset();
					return true;
				}else if(!isSpaceChar(b)){
					is.reset();
					return false;
				}
			}
		} catch (IOException e) {
			return true;
		}
	}

	private final 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 boolean isSpaceChar(int c) { return !(c >= 32 && 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))){
			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 long[] nal(int n)
	{
		long[] a = new long[n];
		for(int i = 0;i < n;i++)a[i] = nl();
		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();
		}
	}

	public static class FastWriter
	{
		private static final int BUF_SIZE = 1<<13;
		private final byte[] buf = new byte[BUF_SIZE];
		private final OutputStream out;
		private int ptr = 0;

		private FastWriter(){out = null;}

		public FastWriter(OutputStream os)
		{
			this.out = os;
		}

		public FastWriter(String path)
		{
			try {
				this.out = new FileOutputStream(path);
			} catch (FileNotFoundException e) {
				throw new RuntimeException("FastWriter");
			}
		}

		public FastWriter write(byte b)
		{
			buf[ptr++] = b;
			if(ptr == BUF_SIZE)innerflush();
			return this;
		}

		public FastWriter write(char c)
		{
			return write((byte)c);
		}

		public FastWriter write(char[] s)
		{
			for(char c : s){
				buf[ptr++] = (byte)c;
				if(ptr == BUF_SIZE)innerflush();
			}
			return this;
		}

		public FastWriter write(String s)
		{
			s.chars().forEach(c -> {
				buf[ptr++] = (byte)c;
				if(ptr == BUF_SIZE)innerflush();
			});
			return this;
		}

		private static int countDigits(int l) {
			if (l >= 1000000000) return 10;
			if (l >= 100000000) return 9;
			if (l >= 10000000) return 8;
			if (l >= 1000000) return 7;
			if (l >= 100000) return 6;
			if (l >= 10000) return 5;
			if (l >= 1000) return 4;
			if (l >= 100) return 3;
			if (l >= 10) return 2;
			return 1;
		}

		public FastWriter write(int x)
		{
			if(x == Integer.MIN_VALUE){
				return write((long)x);
			}
			if(ptr + 12 >= BUF_SIZE)innerflush();
			if(x < 0){
				write((byte)'-');
				x = -x;
			}
			int d = countDigits(x);
			for(int i = ptr + d - 1;i >= ptr;i--){
				buf[i] = (byte)('0'+x%10);
				x /= 10;
			}
			ptr += d;
			return this;
		}

		private static int countDigits(long l) {
			if (l >= 1000000000000000000L) return 19;
			if (l >= 100000000000000000L) return 18;
			if (l >= 10000000000000000L) return 17;
			if (l >= 1000000000000000L) return 16;
			if (l >= 100000000000000L) return 15;
			if (l >= 10000000000000L) return 14;
			if (l >= 1000000000000L) return 13;
			if (l >= 100000000000L) return 12;
			if (l >= 10000000000L) return 11;
			if (l >= 1000000000L) return 10;
			if (l >= 100000000L) return 9;
			if (l >= 10000000L) return 8;
			if (l >= 1000000L) return 7;
			if (l >= 100000L) return 6;
			if (l >= 10000L) return 5;
			if (l >= 1000L) return 4;
			if (l >= 100L) return 3;
			if (l >= 10L) return 2;
			return 1;
		}

		public FastWriter write(long x)
		{
			if(x == Long.MIN_VALUE){
				return write("" + x);
			}
			if(ptr + 21 >= BUF_SIZE)innerflush();
			if(x < 0){
				write((byte)'-');
				x = -x;
			}
			int d = countDigits(x);
			for(int i = ptr + d - 1;i >= ptr;i--){
				buf[i] = (byte)('0'+x%10);
				x /= 10;
			}
			ptr += d;
			return this;
		}

		public FastWriter write(double x, int precision)
		{
			if(x < 0){
				write('-');
				x = -x;
			}
			x += Math.pow(10, -precision)/2;
			//		if(x < 0){ x = 0; }
			write((long)x).write(".");
			x -= (long)x;
			for(int i = 0;i < precision;i++){
				x *= 10;
				write((char)('0'+(int)x));
				x -= (int)x;
			}
			return this;
		}

		public FastWriter writeln(char c){ return write(c).writeln(); }
		public FastWriter writeln(int x){ return write(x).writeln(); }
		public FastWriter writeln(long x){ return write(x).writeln(); }
		public FastWriter writeln(double x, int precision){ return write(x, precision).writeln(); }

		public FastWriter write(int... xs)
		{
			boolean first = true;
			for(int x : xs) {
				if (!first) write(' ');
				first = false;
				write(x);
			}
			return this;
		}

		public FastWriter write(long... xs)
		{
			boolean first = true;
			for(long x : xs) {
				if (!first) write(' ');
				first = false;
				write(x);
			}
			return this;
		}

		public FastWriter write(IntUnaryOperator f, int... xs)
		{
			boolean first = true;
			for(int x : xs) {
				if (!first) write(' ');
				first = false;
				write(f.applyAsInt(x));
			}
			return this;
		}

		public FastWriter write(LongUnaryOperator f, long... xs)
		{
			boolean first = true;
			for(long x : xs) {
				if (!first) write(' ');
				first = false;
				write(f.applyAsLong(x));
			}
			return this;
		}

		public FastWriter writeln()
		{
			return write((byte)'\n');
		}

		public FastWriter writeln(int... xs) { return write(xs).writeln(); }
		public FastWriter writeln(long... xs) { return write(xs).writeln(); }
		public FastWriter writeln(IntUnaryOperator f, int... xs) { return write(f, xs).writeln(); }
		public FastWriter writeln(LongUnaryOperator f, long... xs) { return write(f, xs).writeln(); }
		public FastWriter writeln(char[] line) { return write(line).writeln(); }
		public FastWriter writeln(char[]... map) { for(char[] line : map)write(line).writeln();return this; }
		public FastWriter writeln(String s) { return write(s).writeln(); }

		private void innerflush()
		{
			try {
				out.write(buf, 0, ptr);
				ptr = 0;
			} catch (IOException e) {
				throw new RuntimeException("innerflush");
			}
		}

		public void flush()
		{
			innerflush();
			try {
				out.flush();
			} catch (IOException e) {
				throw new RuntimeException("flush");
			}
		}

		public FastWriter print(byte b) { return write(b); }
		public FastWriter print(char c) { return write(c); }
		public FastWriter print(char[] s) { return write(s); }
		public FastWriter print(String s) { return write(s); }
		public FastWriter print(int x) { return write(x); }
		public FastWriter print(long x) { return write(x); }
		public FastWriter print(double x, int precision) { return write(x, precision); }
		public FastWriter println(char c){ return writeln(c); }
		public FastWriter println(int x){ return writeln(x); }
		public FastWriter println(long x){ return writeln(x); }
		public FastWriter println(double x, int precision){ return writeln(x, precision); }
		public FastWriter print(int... xs) { return write(xs); }
		public FastWriter print(long... xs) { return write(xs); }
		public FastWriter print(IntUnaryOperator f, int... xs) { return write(f, xs); }
		public FastWriter print(LongUnaryOperator f, long... xs) { return write(f, xs); }
		public FastWriter println(int... xs) { return writeln(xs); }
		public FastWriter println(long... xs) { return writeln(xs); }
		public FastWriter println(IntUnaryOperator f, int... xs) { return writeln(f, xs); }
		public FastWriter println(LongUnaryOperator f, long... xs) { return writeln(f, xs); }
		public FastWriter println(char[] line) { return writeln(line); }
		public FastWriter println(char[]... map) { return writeln(map); }
		public FastWriter println(String s) { return writeln(s); }
		public FastWriter println() { return writeln(); }
	}

	public static void trnz(int... o)
	{
		for(int i = 0;i < o.length;i++)if(o[i] != 0)System.out.print(i+":"+o[i]+" ");
		System.out.println();
	}

	// print ids which are 1
	public static void trt(long... o)
	{
		Queue<Integer> stands = new ArrayDeque<>();
		for(int i = 0;i < o.length;i++){
			for(long x = o[i];x != 0;x &= x-1)stands.add(i<<6|Long.numberOfTrailingZeros(x));
		}
		System.out.println(stands);
	}

	public static void tf(boolean... r)
	{
		for(boolean x : r)System.out.print(x?'#':'.');
		System.out.println();
	}

	public static void tf(boolean[]... b)
	{
		for(boolean[] r : b) {
			for(boolean x : r)System.out.print(x?'#':'.');
			System.out.println();
		}
		System.out.println();
	}

	public void tf(long[]... b)
	{
		if(INPUT.length() != 0) {
			for (long[] r : b) {
				for (long x : r) {
					for (int i = 0; i < 64; i++) {
						System.out.print(x << ~i < 0 ? '#' : '.');
					}
				}
				System.out.println();
			}
			System.out.println();
		}
	}

	public void tf(long... b)
	{
		if(INPUT.length() != 0) {
			for (long x : b) {
				for (int i = 0; i < 64; i++) {
					System.out.print(x << ~i < 0 ? '#' : '.');
				}
			}
			System.out.println();
		}
	}

	private void tr(Object... o) { if(INPUT.length() != 0)System.out.println(Arrays.deepToString(o)); }
}

yukicoder

結果

テストケース

ソースコード