#74631 (Java21) No.340 雪の足跡

提出ソース

結果

問題	No.340 雪の足跡
ユーザー	atn112323
提出日時	2016-02-06 11:47:29
言語	Java21 (openjdk 21)
結果	TLE (最新) AC (最初)
実行時間	-
コード長	13,397 bytes
コンパイル時間	2,840 ms
コンパイル使用メモリ	92,932 KB
実行使用メモリ	131,228 KB
最終ジャッジ日時	2023-10-21 19:26:50
合計ジャッジ時間	20,327 ms
ジャッジサーバーID （参考情報）	judge11 / judge12

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	57 ms 52,680 KB
testcase_01	AC	58 ms 53,808 KB
testcase_02	AC	57 ms 53,808 KB
testcase_03	AC	59 ms 53,808 KB
testcase_04	AC	57 ms 53,804 KB
testcase_05	AC	58 ms 53,716 KB
testcase_06	AC	57 ms 53,804 KB
testcase_07	AC	60 ms 52,716 KB
testcase_08	AC	58 ms 53,104 KB
testcase_09	AC	58 ms 53,116 KB
testcase_10	AC	58 ms 53,136 KB
testcase_11	AC	93 ms 55,572 KB
testcase_12	AC	79 ms 54,660 KB
testcase_13	AC	89 ms 55,244 KB
testcase_14	AC	221 ms 59,864 KB
testcase_15	AC	284 ms 62,516 KB
testcase_16	AC	201 ms 59,316 KB
testcase_17	AC	282 ms 61,920 KB
testcase_18	AC	281 ms 62,360 KB
testcase_19	AC	286 ms 61,824 KB
testcase_20	AC	902 ms 122,648 KB
testcase_21	AC	503 ms 64,600 KB
testcase_22	AC	214 ms 92,384 KB
testcase_23	AC	975 ms 125,592 KB
testcase_24	AC	861 ms 101,212 KB
testcase_25	AC	840 ms 115,604 KB
testcase_26	AC	278 ms 60,764 KB
testcase_27	AC	148 ms 58,112 KB
testcase_28	AC	310 ms 62,744 KB
testcase_29	AC	970 ms 103,460 KB
testcase_30	AC	771 ms 92,464 KB
testcase_31	TLE	-
testcase_32	TLE	-
testcase_33	AC	993 ms 123,792 KB
testcase_34	TLE	-
testcase_35	AC	992 ms 122,984 KB
testcase_36	AC	993 ms 122,684 KB

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ソースコード

raw source code

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.LinkedList;
import java.util.Queue;

public class Main {

	/**
	 * This class represents a problem setting.
	 */
	class Problem implements IProblem {

		int[] WHN;
		int[][] B;
		
		@Override
		public void set(ProblemReader reader) throws IOException {
			WHN = reader.nextIntArray();
			B = new int[WHN[2]][];
			for (int i = 0; i < WHN[2]; i++) {
				reader.nextInt();
				B[i] = reader.nextIntArray();
			}
		}
		
		@Override
		public String toString() {
			StringBuilder sb = new StringBuilder();
			sb.append(StringUtils.toString(WHN) + "\n");
			for (int i = 0; i < WHN[2]; i++) {
				sb.append(StringUtils.toString(B[i].length) + "\n");
				sb.append(StringUtils.toString(B[i]) + "\n");
			}
			sb.setLength(sb.length() - 1);
			return sb.toString();
		}
	}
	
	/**
	 * Solver for the problem.
	 * It's the most important part of codes in this file.
	 */
	class Solver implements IProblemSolver<Problem> {

		int[] DX = new int[]{1, 0, -1, 0};
		int[] DY = new int[]{0, 1, 0, -1};
		
		@Override
		public String solve(Problem problem) {
			int W = problem.WHN[0], H = problem.WHN[1];
			int dist = solve(W, H, problem.B);
			if (dist >= 0) {
				return StringUtils.toString(dist);
			} else {
				return "Odekakedekinai..";
			}
		}
		
		private int solve(int W, int H, int[][] B) {
			if (W == 1 && H == 1) {
				return 0;
			}
			int[][][] connection = new int[W + 1][H + 1][4];
			for (int i = 0; i < B.length; i++) {
				int x = B[i][0] % W, y = B[i][0] / W;
				for (int j = 1; j < B[i].length; j++) {
					int xx = B[i][j] % W, yy = B[i][j] / W;
					if (xx != x) {
						int ax = x, bx = xx;
						if (ax > bx) {
							ax = xx; bx = x;
						}
						connection[ax][y][0]++;
						connection[bx][y][0]--;
						connection[ax + 1][y][2]++;
						connection[bx + 1][y][2]--;
					} else if (yy != y) {
						int ay = y, by = yy;
						if (ay > by) {
							ay = yy; by = y;
						}
						connection[x][ay][1]++;
						connection[x][by][1]--;
						connection[x][ay + 1][3]++;
						connection[x][by + 1][3]--;
					}
					x = xx; y = yy;
				}
			}
			for (int x = 0; x < W; x++) {
				for (int y = 0; y < H; y++) {
					int px = x - 1, py = y - 1;
					if (px >= 0) {
						connection[x][y][0] += connection[px][y][0];
						connection[x][y][2] += connection[px][y][2];
					}
					if (py >= 0) {
						connection[x][y][1] += connection[x][py][1];
						connection[x][y][3] += connection[x][py][3];
					}
				}
			}
			int[][] visited = new int[W][H];
			Queue<int[]> que = new LinkedList<>();
			que.add(new int[]{0, 0});
			while (que.size() > 0) {
				int[] xy = que.poll();
				for (int d = 0; d < 4; d++) {
					if (connection[xy[0]][xy[1]][d] > 0) {
						int xx = xy[0] + DX[d];
						int yy = xy[1] + DY[d];
						if (0 <= xx && xx < W && 0 <= yy && yy < H && visited[xx][yy] <= 0) {
							visited[xx][yy] = visited[xy[0]][xy[1]] + 1;
							que.add(new int[]{xx, yy});
						}
					}
				}
			}
			return visited[W - 1][H - 1] > 0 ? visited[W - 1][H - 1] : -1;
		}
	}
	
	/**
	 * This class is a solver to confirm the main solver.
	 * This solver often works only for a problem with a small number setting.
	 */
	class Solver2 implements IProblemSolver<Problem> {

		@Override
		public String solve(Problem problem) {
			// TODO
			return null;
		}
	}
	
	class Factory implements IProblemFactory<Problem> {

		@Override
		public Problem newProblem() {
			// TODO
			return null;
		}

		@Override
		public Problem newProblem(ProblemReader reader) throws IOException {
			Problem problem = new Problem();
			problem.set(reader);
			return problem;
		}
	}
	
	ProblemProcessor<Problem> processor;
	
	Main() {
		Init();
	}
	
	void Init() {
		ProblemProcessorConfig<Problem> config = new ProblemProcessorConfig<>();
		
		config.factory = new Factory();
		config.solver = new Solver();
		config.solver2 = new Solver2();
		
		processor = new ProblemProcessor<Problem>(config);
	}
	
	void process(String mode) throws IOException {
		processor.process(mode);
	}
	
	public static void main(String args[]) throws IOException {
		String mode = "solve";
		new Main().process(mode);
	}
	
/*
	Common library
*/
	
	interface IProblem {
		
		abstract void set(ProblemReader reader) throws IOException;
	}
	
	interface IProblemFactory<P extends IProblem> {
		
		abstract P newProblem();
		abstract P newProblem(ProblemReader reader) throws IOException;
	}
	
	interface IProblemSolver<P extends IProblem> {
		
		abstract String solve(P problem);
	}
	
	class ProblemReader {
		
		BufferedReader br = null;
		
		ProblemReader() {
			br = new BufferedReader(new InputStreamReader(System.in));
		}
		
		int nextInt() throws IOException {
			return StringUtils.toInt(br.readLine());
		}
		
		long nextLong() throws IOException {
			return StringUtils.toLong(br.readLine());
		}
		
		double nextDouble() throws IOException {
			return StringUtils.toDouble(br.readLine());
		}
		
		String nextString() throws IOException {
			return br.readLine();
		}
		
		int[] nextIntArray() throws IOException {
			return StringUtils.toIntArray(br.readLine());
		}
		
		long[] nextLongArray() throws IOException {
			return StringUtils.toLongArray(br.readLine());
		}
		
		double[] nextDoubleArray() throws IOException {
			return StringUtils.toDoubleArray(br.readLine());
		}
		
		String[] nextStringArray() throws IOException {
			return StringUtils.toStringArray(br.readLine());
		}
		
		int[] nextIntArray(int n) throws IOException {
			int[] a = new int[n];
			for (int i = 0; i < n; i++) {
				a[i] = nextInt();
			}
			return a;
		}
		
		long[] nextLongArray(int n) throws IOException {
			long[] a = new long[n];
			for (int i = 0; i < n; i++) {
				a[i] = nextLong();
			}
			return a;
		}
		
		double[] nextDoubleArray(int n) throws IOException {
			double[] a = new double[n];
			for (int i = 0; i < n; i++) {
				a[i] = nextDouble();
			}
			return a;
		}
		
		String[] nextStringArray(int n) throws IOException {
			String[] strs = new String[n];
			for (int i = 0; i < n; i++) {
				strs[i] = nextString();
			}
			return strs;
		}
		
		int[][] nextIntArray2(int n) throws IOException {
			int[][] a = new int[n][];
			for (int i = 0; i < n; i++) {
				a[i] = nextIntArray();
			}
			return a;
		}
		
		long[][] nextLongArray2(int n) throws IOException {
			long[][] a = new long[n][];
			for (int i = 0; i < n; i++) {
				a[i] = nextLongArray();
			}
			return a;
		}
		
		double[][] nextDoubleArray2(int n) throws IOException {
			double[][] a = new double[n][];
			for (int i = 0; i < n; i++) {
				a[i] = nextDoubleArray();
			}
			return a;
		}
		
		String[][] nextStringArray2(int n) throws IOException {
			String[][] strs = new String[n][];
			for (int i = 0; i < n; i++) {
				strs[i] = nextStringArray();
			}
			return strs;
		}
		
		void close() throws IOException {
			if (br != null) {
				br.close();
			}
		}
	}
	
	class ProblemCreator<P extends IProblem> {
		
		IProblemFactory<P> factory;
		
		ProblemCreator(IProblemFactory<P> factory) {
			this.factory = factory;
		}
		
		void create() throws FileNotFoundException {
			P problem = factory.newProblem();
			System.out.println(problem.toString());
		}
	}
	
	class ProblemSolverComparator<P extends IProblem> {
		
		IProblemFactory<P> factory;
		IProblemSolver<P> solver1, solver2;
		
		ProblemSolverComparator(IProblemFactory<P> factory, IProblemSolver<P> solver1, IProblemSolver<P> solver2) {
			this.factory = factory;
			this.solver1 = solver1;
			this.solver2 = solver2;
		}
		
		void compare() throws IOException {
			ProblemReader reader = null;
			try {
				reader = new ProblemReader();
				P problem = factory.newProblem(reader);
				String res1 = solver1.solve(problem);
				String res2 = solver2.solve(problem);
				if (res1.equals(res2)) {
					System.out.println(res1);
				} else {
					System.err.println(res1 + " " + res2);
				}
			} finally {
				if (reader != null) {
					reader.close();
				}
			}
		}
	}
	
	class ProblemAnswerer<P extends IProblem> {
		
		IProblemFactory<P> factory;
		IProblemSolver<P> solver;
		
		ProblemAnswerer(IProblemFactory<P> factory, IProblemSolver<P> solver) {
			this.factory = factory;
			this.solver = solver;
		}
		
		void answer() throws IOException {
			ProblemReader reader = null;
			try {
				reader = new ProblemReader();
				P problem = factory.newProblem(reader);
				String res = solver.solve(problem);
				System.out.println(res);
			} finally {
				if (reader != null) {
					reader.close();
				}
			}
		}
	}
	
	class ProblemProcessorConfig<P extends IProblem> {
		
		IProblemFactory<P> factory;
		
		IProblemSolver<P> solver, solver2;
	}
	
	class ProblemProcessor<P extends IProblem> {
		
		ProblemProcessorConfig<P> config;
		
		ProblemCreator<P> creator;
		ProblemSolverComparator<P> comparator;
		ProblemAnswerer<P> answerer;
		
		ProblemProcessor(ProblemProcessorConfig<P> config) {
			this.config = config;
			creator = new ProblemCreator<P>(config.factory);
			comparator = new ProblemSolverComparator<P>(config.factory, config.solver, config.solver2);
			answerer = new ProblemAnswerer<P>(config.factory, config.solver);
		}
		
		void process(String mode) throws IOException {
			switch (mode) {
			case "create":
				creator.create();
				break;
			case "debug":
				comparator.compare();
				break;
			case "solve":
				answerer.answer();
				break;
			}
		}
	}
	
	static class StringUtils {
		
		static String toString(int a) {
			return String.valueOf(a);
		}
		
		static String toString(long a) {
			return String.valueOf(a);
		}
		
		static String toString(double a) {
			return String.valueOf(a);
		}
		
		static String toString(String str) {
			return str;
		}
		
		static String toString(int[] a) {
			StringBuilder sb = new StringBuilder();
			for (int i = 0; i < a.length; i++) {
				if (i < a.length - 1) {
					sb.append(a[i] + " ");
				} else {
					sb.append(a[i]);
				}
			}
			return sb.toString();
		}
		
		static String toString(long[] a) {
			StringBuilder sb = new StringBuilder();
			for (int i = 0; i < a.length; i++) {
				if (i < a.length - 1) {
					sb.append(a[i] + " ");
				} else {
					sb.append(a[i]);
				}
			}
			return sb.toString();
		}
		
		static String toString(double[] a) {
			StringBuilder sb = new StringBuilder();
			for (int i = 0; i < a.length; i++) {
				if (i < a.length - 1) {
					sb.append(a[i] + " ");
				} else {
					sb.append(a[i]);
				}
			}
			return sb.toString();
		}
		
		static String toString(String[] strs) {
			StringBuilder sb = new StringBuilder();
			for (int i = 0; i < strs.length; i++) {
				if (i < strs.length - 1) {
					sb.append(strs[i] + " ");
				} else {
					sb.append(strs[i]);
				}
			}
			return sb.toString();
		}
		
		static String toString(int[][] a) {
			StringBuilder sb = new StringBuilder();
			for (int i = 0; i < a.length; i++) {
				for (int j = 0; j < a[i].length; j++) {
					if (j < a[i].length - 1) {
						sb.append(a[i][j] + " ");
					} else {
						sb.append(a[i][j]);
					}
				}
				sb.append("\n");
			}
			sb.setLength(sb.length() - 1);
			return sb.toString();
		}
		
		static String toString(long[][] a) {
			StringBuilder sb = new StringBuilder();
			for (int i = 0; i < a.length; i++) {
				for (int j = 0; j < a[i].length; j++) {
					if (j < a[i].length - 1) {
						sb.append(a[i][j] + " ");
					} else {
						sb.append(a[i][j]);
					}
				}
				sb.append("\n");
			}
			sb.setLength(sb.length() - 1);
			return sb.toString();
		}
		
		static String toString(double[][] a) {
			StringBuilder sb = new StringBuilder();
			for (int i = 0; i < a.length; i++) {
				for (int j = 0; j < a[i].length; j++) {
					if (j < a[i].length - 1) {
						sb.append(a[i][j] + " ");
					} else {
						sb.append(a[i][j]);
					}
				}
				sb.append("\n");
			}
			sb.setLength(sb.length() - 1);
			return sb.toString();
		}
		
		static String toString(String[][] a) {
			StringBuilder sb = new StringBuilder();
			for (int i = 0; i < a.length; i++) {
				for (int j = 0; j < a[i].length; j++) {
					if (j < a[i].length - 1) {
						sb.append(a[i][j] + " ");
					} else {
						sb.append(a[i][j]);
					}
				}
				sb.append("\n");
			}
			sb.setLength(sb.length() - 1);
			return sb.toString();
		}
		
		static int toInt(String s) throws IOException {
			return Integer.parseInt(s);
		}
		
		static long toLong(String s) throws IOException {
			return Long.parseLong(s);
		}
		
		static double toDouble(String s) throws IOException {
			return Double.parseDouble(s);
		}
		
		static int[] toIntArray(String s) throws IOException {
			String[] tokens = s.split(" ");
			int[] a = new int[tokens.length];
			for (int i = 0; i < tokens.length; i++) {
				a[i] = Integer.parseInt(tokens[i]);
			}
			return a;
		}
		
		static long[] toLongArray(String s) throws IOException {
			String[] tokens = s.split(" ");
			long[] a = new long[tokens.length];
			for (int i = 0; i < tokens.length; i++) {
				a[i] = Long.parseLong(tokens[i]);
			}
			return a;
		}
		
		static double[] toDoubleArray(String s) throws IOException {
			String[] tokens = s.split(" ");
			double[] a = new double[tokens.length];
			for (int i = 0; i < tokens.length; i++) {
				a[i] = Double.parseDouble(tokens[i]);
			}
			return a;
		}
		
		static String[] toStringArray(String s) throws IOException {
			return s.split(" ");
		}
	}
}

yukicoder

結果

テストケース

ソースコード