#149255 (Java21) No.483 マッチ並べ

提出ソース

結果

問題	No.483 マッチ並べ
ユーザー	Grenache
提出日時	2017-02-10 23:25:29
言語	Java21 (openjdk 21)
結果	AC
実行時間	54 ms / 2,000 ms
コード長	6,360 bytes
コンパイル時間	4,414 ms
コンパイル使用メモリ	78,004 KB
実行使用メモリ	50,164 KB
最終ジャッジ日時	2023-08-28 12:25:16
合計ジャッジ時間	9,248 ms
ジャッジサーバーID （参考情報）	judge13 / judge12

このコードへのチャレンジ（β）

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	44 ms 49,500 KB
testcase_01	AC	45 ms 49,664 KB
testcase_02	AC	45 ms 49,472 KB
testcase_03	AC	45 ms 49,320 KB
testcase_04	AC	46 ms 49,460 KB
testcase_05	AC	45 ms 49,616 KB
testcase_06	AC	44 ms 49,488 KB
testcase_07	AC	45 ms 49,476 KB
testcase_08	AC	46 ms 49,584 KB
testcase_09	AC	46 ms 49,664 KB
testcase_10	AC	46 ms 49,476 KB
testcase_11	AC	46 ms 49,304 KB
testcase_12	AC	46 ms 49,544 KB
testcase_13	AC	47 ms 49,544 KB
testcase_14	AC	44 ms 49,584 KB
testcase_15	AC	45 ms 48,120 KB
testcase_16	AC	45 ms 49,492 KB
testcase_17	AC	46 ms 49,668 KB
testcase_18	AC	45 ms 49,448 KB
testcase_19	AC	45 ms 49,360 KB
testcase_20	AC	45 ms 49,508 KB
testcase_21	AC	46 ms 49,452 KB
testcase_22	AC	45 ms 49,856 KB
testcase_23	AC	45 ms 49,360 KB
testcase_24	AC	45 ms 49,512 KB
testcase_25	AC	45 ms 49,556 KB
testcase_26	AC	46 ms 49,476 KB
testcase_27	AC	51 ms 49,836 KB
testcase_28	AC	52 ms 49,604 KB
testcase_29	AC	51 ms 49,512 KB
testcase_30	AC	48 ms 49,568 KB
testcase_31	AC	54 ms 50,124 KB
testcase_32	AC	54 ms 49,588 KB
testcase_33	AC	47 ms 49,472 KB
testcase_34	AC	47 ms 49,612 KB
testcase_35	AC	48 ms 49,484 KB
testcase_36	AC	47 ms 49,584 KB
testcase_37	AC	46 ms 49,524 KB
testcase_38	AC	51 ms 49,612 KB
testcase_39	AC	53 ms 49,744 KB
testcase_40	AC	52 ms 49,732 KB
testcase_41	AC	51 ms 49,648 KB
testcase_42	AC	51 ms 49,564 KB
testcase_43	AC	51 ms 50,164 KB
testcase_44	AC	46 ms 49,396 KB
testcase_45	AC	46 ms 49,648 KB
testcase_46	AC	46 ms 49,572 KB
testcase_47	AC	48 ms 50,120 KB
testcase_48	AC	51 ms 49,748 KB
testcase_49	AC	48 ms 49,524 KB
testcase_50	AC	51 ms 49,896 KB
testcase_51	AC	48 ms 49,532 KB
testcase_52	AC	51 ms 49,564 KB
testcase_53	AC	46 ms 49,692 KB
testcase_54	AC	45 ms 49,424 KB
testcase_55	AC	45 ms 49,896 KB

権限があれば一括ダウンロードができます

ソースコード

raw source code

import java.io.*;
import java.util.*;


public class Main_yukicoder483 {

	private static Scanner sc;
	private static Printer pr;

	private static void solve() {
		int n = sc.nextInt();

		long[] rc0 = new long[n];
		long[] rc1 = new long[n];
		for (int i = 0; i < n; i++) {
			long r0 = sc.nextInt();
			long c0 = sc.nextInt();
			rc0[i] = r0 << 32 | c0;
			long r1 = sc.nextInt();
			long c1 = sc.nextInt();
			rc1[i] = r1 << 32 | c1;
		}

		int V = n * 2;
		SCC scc = new SCC(V);

		for (int i = 0; i < n; i++) {
			for (int j = i + 1; j < n; j++) {
				if (rc0[i] == rc0[j]) {
					scc.add_edge(i + n, j);
					scc.add_edge(j + n, i);
				}
				if (rc1[i] == rc1[j]) {
					scc.add_edge(i, j + n);
					scc.add_edge(j, i + n);
				}
				if (rc0[i] == rc1[j]) {
					scc.add_edge(i + n, j + n);
					scc.add_edge(j, i);
				}
				if (rc1[i] == rc0[j]) {
					scc.add_edge(i, j);
					scc.add_edge(j + n, i + n);
				}
			}
		}

		scc.scc();

		for (int i = 0; i < n; i++) {
			if (scc.cmp[i] == scc.cmp[i + n]) {
				pr.println("NO");
				return;
			}
		}

		pr.println("YES");
	}

	private static class SCC {
		private int V;
		private List<List<Integer>> edges;
		private List<List<Integer>> redges;
		private List<Integer> vs;
		private boolean[] used;
		private int[] cmp;

		private SCC(int V) {
			this.V = V;

			edges = new ArrayList<>();
			redges = new ArrayList<>();
			for (int i = 0; i < V; i++) {
				edges.add(new ArrayList<>());
				redges.add(new ArrayList<>());
			}
			vs = new ArrayList<>();
			used = new boolean[V];
			cmp = new int[V];
		}

		private void add_edge(int from, int to) {
			edges.get(from).add(to);
			redges.get(to).add(from);
		}

		private int scc() {
			// dfs
			for (int v = 0; v < V; v++) {
				if (used[v]) {
					continue;
				}

				Deque<Integer> st = new ArrayDeque<>();
				st.push(v);
				while (!st.isEmpty()) {
					int e = st.peek();

					if (used[e]) {
						st.pop();
					} else {
						for (int next : edges.get(e)) {
							if (used[next]) {
								continue;
							}

							st.push(next);
						}
						used[e] = true;
						vs.add(e);
					}
				}
			}

			Arrays.fill(used, false);

			// rdfs
			int k = 0;
			for (int i = vs.size() - 1; i >= 0; i--) {
				int v = vs.get(i);

				if (used[v]) {
					continue;
				}

				Deque<Integer> st = new ArrayDeque<>();
				st.push(v);
				while (!st.isEmpty()) {
					int e = st.peek();

					if (used[e]) {
						st.pop();
					} else {
						for (int next : redges.get(e)) {
							if (used[next]) {
								continue;
							}

							st.push(next);
						}
						used[e] = true;
						cmp[e] = k;
					}
				}

				k++;
			}

			return k;
		}
	}

	// ---------------------------------------------------
	public static void main(String[] args) {
		sc = new Scanner(System.in);
		pr = new Printer(System.out);

		solve();

		pr.close();
		sc.close();
	}

	@SuppressWarnings("unused")
	private static class Scanner {
		BufferedReader br;

		Scanner (InputStream in) {
			br = new BufferedReader(new InputStreamReader(in));
		}

		private boolean isPrintable(int ch) {
			return ch >= '!' && ch <= '~';
		}

		private boolean isCRLF(int ch) {
			return ch == '\n' || ch == '\r' || ch == -1;
		}

		private int nextPrintable() {
			try {
				int ch;
				while (!isPrintable(ch = br.read())) {
					if (ch == -1) {
						throw new NoSuchElementException();
					}
				}

				return ch;
			} catch (IOException e) {
				throw new NoSuchElementException();
			}
		}

		String next() {
			try {
				int ch = nextPrintable();
				StringBuilder sb = new StringBuilder();
				do {
					sb.appendCodePoint(ch);
				} while (isPrintable(ch = br.read()));

				return sb.toString();
			} catch (IOException e) {
				throw new NoSuchElementException();
			}
		}

		int nextInt() {
			try {
				// parseInt from Integer.parseInt()
				boolean negative = false;
				int res = 0;
				int limit = -Integer.MAX_VALUE;
				int radix = 10;

				int fc = nextPrintable();
				if (fc < '0') {
					if (fc == '-') {
						negative = true;
						limit = Integer.MIN_VALUE;
					} else if (fc != '+') {
						throw new NumberFormatException();
					}
					fc = br.read();
				}
				int multmin = limit / radix;

				int ch = fc;
				do {
					int digit = ch - '0';
					if (digit < 0 || digit >= radix) {
						throw new NumberFormatException();
					}
					if (res < multmin) {
						throw new NumberFormatException();
					}
					res *= radix;
					if (res < limit + digit) {
						throw new NumberFormatException();
					}
					res -= digit;

				} while (isPrintable(ch = br.read()));

				return negative ? res : -res;
			} catch (IOException e) {
				throw new NoSuchElementException();
			}
		}

		long nextLong() {
			try {
				// parseLong from Long.parseLong()
				boolean negative = false;
				long res = 0;
				long limit = -Long.MAX_VALUE;
				int radix = 10;

				int fc = nextPrintable();
				if (fc < '0') {
					if (fc == '-') {
						negative = true;
						limit = Long.MIN_VALUE;
					} else if (fc != '+') {
						throw new NumberFormatException();
					}
					fc = br.read();
				}
				long multmin = limit / radix;

				int ch = fc;
				do {
					int digit = ch - '0';
					if (digit < 0 || digit >= radix) {
						throw new NumberFormatException();
					}
					if (res < multmin) {
						throw new NumberFormatException();
					}
					res *= radix;
					if (res < limit + digit) {
						throw new NumberFormatException();
					}
					res -= digit;

				} while (isPrintable(ch = br.read()));

				return negative ? res : -res;
			} catch (IOException e) {
				throw new NoSuchElementException();
			}
		}

		float nextFloat() {
			return Float.parseFloat(next());
		}

		double nextDouble() {
			return Double.parseDouble(next());
		}

		String nextLine() {
			try {
				int ch;
				while (isCRLF(ch = br.read())) {
					if (ch == -1) {
						throw new NoSuchElementException();
					}
				}
				StringBuilder sb = new StringBuilder();
				do {
					sb.appendCodePoint(ch);
				} while (!isCRLF(ch = br.read()));

				return sb.toString();
			} catch (IOException e) {
				throw new NoSuchElementException();
			}
		}

		void close() {
			try {
				br.close();
			} catch (IOException e) {
//				throw new NoSuchElementException();
			}
		}
	}

	private static class Printer extends PrintWriter {
		Printer(PrintStream out) {
			super(out);
		}
	}
}