結果

問題 No.34 砂漠の行商人
ユーザー uwiuwi
提出日時 2015-02-17 02:43:41
言語 Java21
(openjdk 21)
結果
AC  
実行時間 1,949 ms / 5,000 ms
コード長 4,348 bytes
コンパイル時間 4,195 ms
コンパイル使用メモリ 80,512 KB
実行使用メモリ 178,104 KB
最終ジャッジ日時 2023-09-10 19:02:26
合計ジャッジ時間 30,504 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 87 ms
52,460 KB
testcase_01 AC 101 ms
54,436 KB
testcase_02 AC 176 ms
60,632 KB
testcase_03 AC 172 ms
60,516 KB
testcase_04 AC 543 ms
87,380 KB
testcase_05 AC 662 ms
98,280 KB
testcase_06 AC 395 ms
76,632 KB
testcase_07 AC 921 ms
114,516 KB
testcase_08 AC 1,314 ms
147,392 KB
testcase_09 AC 1,033 ms
117,796 KB
testcase_10 AC 1,488 ms
173,752 KB
testcase_11 AC 942 ms
175,944 KB
testcase_12 AC 595 ms
90,504 KB
testcase_13 AC 1,873 ms
178,104 KB
testcase_14 AC 1,916 ms
174,308 KB
testcase_15 AC 630 ms
94,824 KB
testcase_16 AC 604 ms
90,280 KB
testcase_17 AC 1,094 ms
117,084 KB
testcase_18 AC 212 ms
60,820 KB
testcase_19 AC 1,937 ms
167,964 KB
testcase_20 AC 1,949 ms
173,872 KB
testcase_21 AC 1,849 ms
176,016 KB
testcase_22 AC 1,605 ms
165,616 KB
testcase_23 AC 808 ms
106,508 KB
testcase_24 AC 1,681 ms
169,636 KB
testcase_25 AC 1,045 ms
116,860 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

diff # 

package q0xx;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.ArrayDeque;
import java.util.Arrays;
import java.util.InputMismatchException;
import java.util.Queue;

public class Q15_2 {
	static InputStream is;
	static PrintWriter out;
	static String INPUT = "";
	
	static void solve()
	{
		int n = ni(), v = ni();
		int sc = ni()-1, sr = ni()-1;
		int tc = ni()-1, tr = ni()-1;
		int[][] a = new int[n][];
		for(int i = 0;i < n;i++){
			a[i] = na(n);
		}
		
		int[][][] dp = new int[1801][n][n];
		int I = 99999999;
		for(int i = 0;i < 1801;i++){
			for(int j = 0;j < n;j++){
				Arrays.fill(dp[i][j], I);
			}
		}
		Queue<Integer> q = new ArrayDeque<Integer>();
		q.add(0<<14|sr<<7|sc);
		dp[0][sr][sc] = 0;
		int[] dr = { 1, 0, -1, 0 };
		int[] dc = { 0, 1, 0, -1 };
		while(!q.isEmpty()){
			int cur = q.poll();
			int dmg = cur>>>14, r = cur>>>7&127, c = cur&127;
			for(int k = 0;k < 4;k++){
				int nr = r + dr[k], nc = c + dc[k];
				if(nr >= 0 && nr < n && nc >= 0 && nc < n){
					int ndmg = dmg + a[nr][nc];
					if(ndmg <= 1800 && dp[ndmg][nr][nc] > dp[dmg][r][c] + 1){
						dp[ndmg][nr][nc] = dp[dmg][r][c] + 1;
						q.add(ndmg<<14|nr<<7|nc);
					}
				}
			}
		}
		
		int mind = I;
		for(int i = Math.min(1800, v-1);i >= 0;i--){
			mind = Math.min(mind, dp[i][tr][tc]);
		}
		out.println(mind == I ? -1 : mind);
	}
	
	public static void main(String[] args) throws Exception
	{
		long S = System.currentTimeMillis();
		is = INPUT.isEmpty() ? System.in : new ByteArrayInputStream(INPUT.getBytes());
		out = new PrintWriter(System.out);
		
		solve();
		out.flush();
		long G = System.currentTimeMillis();
		tr(G-S+"ms");
	}
	
	private static 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 static byte[] inbuf = new byte[1024];
	static int lenbuf = 0, ptrbuf = 0;
	
	private static 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 static boolean isSpaceChar(int c) { return !(c >= 33 && c <= 126); }
	private static int skip() { int b; while((b = readByte()) != -1 && isSpaceChar(b)); return b; }
	
	private static double nd() { return Double.parseDouble(ns()); }
	private static char nc() { return (char)skip(); }
	
	private static 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 static 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 static 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 static int[] na(int n)
	{
		int[] a = new int[n];
		for(int i = 0;i < n;i++)a[i] = ni();
		return a;
	}
	
	private static 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 static 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) { if(INPUT.length() != 0)System.out.println(Arrays.deepToString(o)); }
}
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