結果
問題 | No.157 2つの空洞 |
ユーザー | hhgfhn1 |
提出日時 | 2018-12-24 14:32:02 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 86 ms / 2,000 ms |
コード長 | 4,696 bytes |
コンパイル時間 | 2,791 ms |
コンパイル使用メモリ | 78,584 KB |
実行使用メモリ | 51,200 KB |
最終ジャッジ日時 | 2024-09-25 11:00:00 |
合計ジャッジ時間 | 4,695 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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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 | 53 ms
49,768 KB |
testcase_01 | AC | 54 ms
49,816 KB |
testcase_02 | AC | 53 ms
49,632 KB |
testcase_03 | AC | 55 ms
50,192 KB |
testcase_04 | AC | 54 ms
49,780 KB |
testcase_05 | AC | 55 ms
49,888 KB |
testcase_06 | AC | 56 ms
49,696 KB |
testcase_07 | AC | 55 ms
49,912 KB |
testcase_08 | AC | 54 ms
49,508 KB |
testcase_09 | AC | 58 ms
49,872 KB |
testcase_10 | AC | 53 ms
49,972 KB |
testcase_11 | AC | 54 ms
50,000 KB |
testcase_12 | AC | 54 ms
49,804 KB |
testcase_13 | AC | 56 ms
49,312 KB |
testcase_14 | AC | 61 ms
49,680 KB |
testcase_15 | AC | 58 ms
49,924 KB |
testcase_16 | AC | 55 ms
50,168 KB |
testcase_17 | AC | 86 ms
51,200 KB |
testcase_18 | AC | 54 ms
49,992 KB |
testcase_19 | AC | 55 ms
49,448 KB |
ソースコード
import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import java.util.List; import java.util.NoSuchElementException; public class Main { public static void main(String args[]) { FastScanner scanner = new FastScanner(); w=scanner.nextInt(); h=scanner.nextInt(); bord=new char[h][w]; tarX1=new ArrayList<>(); tarY1=new ArrayList<>(); tarX2=new ArrayList<>(); tarY2=new ArrayList<>(); for(int i=0;i<h;i++) { String s=scanner.next(); for(int j=0;j<w;j++) { char c=s.charAt(j); bord[i][j]=c; } } out:for(int i=0;i<h;i++) { for(int j=0;j<w;j++) { if(bord[i][j]=='.') { dfs1(i,j); break out; } } } out:for(int i=0;i<h;i++) { for(int j=0;j<w;j++) { if(bord[i][j]=='.'&&check(j,i,tarX1,tarY1)) { dfs2(i,j); break out; } } } int min=Integer.MAX_VALUE; for(int i=0;i<tarX1.size();i++) { for(int j=0;j<tarX2.size();j++) { int tmp=Math.abs(tarX1.get(i)-tarX2.get(j))+Math.abs(tarY1.get(i)-tarY2.get(j)); tmp--; min=Math.min(tmp, min); } } System.out.println(min); } static int h; static int w; static char[][] bord; static List<Integer> tarX1; static List<Integer> tarY1; static List<Integer> tarX2; static List<Integer> tarY2; private static void dfs1(int i, int j) { tarX1.add(j); tarY1.add(i); check4Neighborhood1(j,i); } private static void check4Neighborhood1(int x, int y) { for (int i = -1; i <= 1; i++) { for (int j = -1; j <= 1; j++) { if ((i == 0 && j != 0) || (i != 0 && j == 0)) { int tarX = j + x; int tarY = i + y; if (0 <= tarX && tarX <= bord[0].length - 1 && 0 <= tarY && tarY <= bord.length - 1) { if (bord[tarY][tarX]=='.'&&check(tarX,tarY,tarX1,tarY1)) { dfs1(tarY,tarX); } } } } } } private static boolean check(int tarX, int tarY, List<Integer> tarX12, List<Integer> tarY12) { for(int i=0;i<tarX12.size();i++) { if(tarX==tarX12.get(i)&&tarY==tarY12.get(i)) { return false; } } return true; } private static void dfs2(int i, int j) { tarX2.add(j); tarY2.add(i); check4Neighborhood2(j,i); } private static void check4Neighborhood2(int x, int y) { for (int i = -1; i <= 1; i++) { for (int j = -1; j <= 1; j++) { if ((i == 0 && j != 0) || (i != 0 && j == 0)) { int tarX = j + x; int tarY = i + y; if (0 <= tarX && tarX <= bord[0].length - 1 && 0 <= tarY && tarY <= bord.length - 1) { if (bord[tarY][tarX]=='.'&&check(tarX,tarY,tarX2,tarY2)) { dfs2(tarY,tarX); } } } } } } } class FastScanner { private final InputStream in = System.in; private final byte[] buffer = new byte[1024]; private int ptr = 0; private int buflen = 0; private boolean hasNextByte() { if (ptr < buflen) { return true; }else{ ptr = 0; try { buflen = in.read(buffer); } catch (IOException e) { e.printStackTrace(); } if (buflen <= 0) { return false; } } return true; } private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;} private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;} public boolean hasNext() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++; return hasNextByte();} public String next() { if (!hasNext()) throw new NoSuchElementException(); StringBuilder sb = new StringBuilder(); int b = readByte(); while(isPrintableChar(b)) { sb.appendCodePoint(b); b = readByte(); } return sb.toString(); } public long nextLong() { if (!hasNext()) throw new NoSuchElementException(); long n = 0; boolean minus = false; int b = readByte(); if (b == '-') { minus = true; b = readByte(); } if (b < '0' || '9' < b) { throw new NumberFormatException(); } while(true){ if ('0' <= b && b <= '9') { n *= 10; n += b - '0'; }else if(b == -1 || !isPrintableChar(b)){ return minus ? -n : n; }else{ throw new NumberFormatException(); } b = readByte(); } } public int nextInt() { long nl = nextLong(); if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException(); return (int) nl; } public double nextDouble() { return Double.parseDouble(next());} }