結果

問題 No.179 塗り分け
ユーザー t8m8⛄️t8m8⛄️
提出日時 2015-04-06 04:06:52
言語 Java21
(openjdk 21)
結果
AC  
実行時間 135 ms / 3,000 ms
コード長 4,993 bytes
コンパイル時間 3,362 ms
コンパイル使用メモリ 75,120 KB
実行使用メモリ 53,532 KB
最終ジャッジ日時 2023-09-30 20:39:04
合計ジャッジ時間 7,134 ms
ジャッジサーバーID
（参考情報） 		judge14 / 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 42 ms
49,240 KB
testcase_01 AC 41 ms
49,240 KB
testcase_02 AC 42 ms
49,396 KB
testcase_03 AC 43 ms
49,396 KB
testcase_04 AC 43 ms
49,508 KB
testcase_05 AC 43 ms
49,236 KB
testcase_06 AC 45 ms
49,572 KB
testcase_07 AC 44 ms
49,164 KB
testcase_08 AC 46 ms
50,068 KB
testcase_09 AC 66 ms
51,420 KB
testcase_10 AC 44 ms
50,052 KB
testcase_11 AC 45 ms
49,840 KB
testcase_12 AC 77 ms
52,312 KB
testcase_13 AC 42 ms
49,784 KB
testcase_14 AC 42 ms
49,296 KB
testcase_15 AC 42 ms
49,696 KB
testcase_16 AC 42 ms
49,488 KB
testcase_17 AC 43 ms
49,404 KB
testcase_18 AC 46 ms
49,828 KB
testcase_19 AC 45 ms
50,332 KB
testcase_20 AC 43 ms
49,432 KB
testcase_21 AC 44 ms
49,160 KB
testcase_22 AC 135 ms
53,532 KB
testcase_23 AC 44 ms
50,016 KB
testcase_24 AC 68 ms
51,676 KB
testcase_25 AC 44 ms
49,256 KB
testcase_26 AC 47 ms
50,204 KB
testcase_27 AC 47 ms
49,260 KB
testcase_28 AC 45 ms
49,844 KB
testcase_29 AC 48 ms
49,812 KB
testcase_30 AC 47 ms
49,408 KB
testcase_31 AC 50 ms
49,404 KB
testcase_32 AC 47 ms
49,412 KB
testcase_33 AC 49 ms
49,416 KB
testcase_34 AC 46 ms
49,612 KB
testcase_35 AC 51 ms
49,204 KB
testcase_36 AC 42 ms
49,440 KB
testcase_37 AC 43 ms
49,436 KB
testcase_38 AC 42 ms
49,396 KB
testcase_39 AC 42 ms
49,552 KB
testcase_40 AC 43 ms
49,420 KB
testcase_41 AC 42 ms
49,232 KB
testcase_42 AC 43 ms
49,248 KB
testcase_43 AC 44 ms
49,936 KB
testcase_44 AC 45 ms
49,608 KB
testcase_45 AC 43 ms
49,464 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 # 

//No.179 塗り分け 解説

import java.util.*;
import java.io.*;
import static java.util.Arrays.*;
import static java.lang.Math.*;

public class No179 {

    static final Reader in = new Reader();
    static final PrintWriter out = new PrintWriter(System.out,false);

    static void solve(){
        int h = in.nextInt();
        int w = in.nextInt();
        int cnt = 0;
        char[][] cs = new char[h][w];
        for (int i=0; i<h; i++) {
            for (int j=0; j<w; j++) {
                cs[i][j] = in.nextChar();
                if (cs[i][j] == '#') cnt++;
            }
        }
        if (cnt%2 == 1 || cnt == 0) {
            out.println("NO");
            return;
        }

        BitSet bs = new BitSet(h*w);
        for (int di=0; di<h; di++) {
            for (int dj=(di==0 ? 1 : -w+1); dj<w; dj++) {
                boolean flag = true;
                outer:
                for (int i=0; i<h; i++) {
                    for (int j=0; j<w; j++) {
                        if (cs[i][j] != '#' || bs.get(i*w+j)) continue;
                        int ni = i+di;
                        int nj = j+dj;
                        if (ni < 0 || h <= ni || nj < 0 || w <= nj || cs[ni][nj] != '#') {
                            flag = false;
                            break outer;
                        }
                        bs.set(ni*w+nj);
                    }
                }
                if (flag) {
                    out.println("YES");
                    return;
                }
                bs.clear();
            }
        }

        out.println("NO");
    }

    public static void main(String[] args) throws Exception {
        long start = System.currentTimeMillis();

        solve();
        out.flush();

        long end = System.currentTimeMillis();
        //trace(end-start + "ms");
        in.close();
        out.close();
    }

    static void trace(Object... o) { System.out.println(deepToString(o));}
}

class Reader {
    private final InputStream in;
    private final byte[] buf = new byte[1024];
    private int ptr = 0;
    private int buflen = 0;

    public Reader() { this(System.in);}
    public Reader(InputStream source) { this.in = source;}

    private boolean hasNextByte() {
        if (ptr < buflen) return true;
        ptr = 0;
        try{
            buflen = in.read(buf);
        }catch (IOException e) {e.printStackTrace();}
        if (buflen <= 0) return false;
        return true;
    }

    private int readByte() { if (hasNextByte()) return buf[ptr++]; else return -1;}

    private boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}

    private void skip() { while(hasNextByte() && !isPrintableChar(buf[ptr])) ptr++;}

    public boolean hasNext() {skip(); 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();
        boolean minus = false;
        long num = readByte();

        if(num == '-'){
            num = 0;
            minus = true;
        }else if (num < '0' || '9' < num){
            throw new NumberFormatException();
        }else{
            num -= '0';
        }
        
        while(true){
            int b = readByte();
            if('0' <= b && b <= '9')
                num = num * 10 + (b - '0');
            else if(b == -1 || !isPrintableChar(b))
                return minus ? -num : num;
            else
                throw new NoSuchElementException();
        }
    }

    public int nextInt() {
        long num = nextLong();
        if (num < Integer.MIN_VALUE || Integer.MAX_VALUE < num)
            throw new NumberFormatException();
        return (int)num;
    }

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

    public char nextChar() {
        if (!hasNext()) throw new NoSuchElementException();
        return (char)readByte();
    }

    public String nextLine() {
        while (hasNextByte() && (buf[ptr] == '\n' || buf[ptr] == '\r')) ptr++;
        if (!hasNextByte()) throw new NoSuchElementException();

        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while (b != '\n' && b != '\r') {
            sb.appendCodePoint(b);
            b = readByte();
        }

        return sb.toString();
    }

    public int[] nextIntArray(int n) {
        int[] res = new int[n];
        for (int i=0; i<n; i++) res[i] = nextInt();
        return res;
    }

    public char[] nextCharArray(int n) {
        char[] res = new char[n];
        for (int i=0; i<n; i++) res[i] = nextChar();
        return res;
    }

    public void close() {try{ in.close();}catch(IOException e){ e.printStackTrace();}};
}
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