結果

問題 No.3161 Find Presents
コンテスト
ユーザー tenten
提出日時 2025-06-05 14:43:45
言語 Java
(openjdk 23)
結果
AC  
実行時間 553 ms / 4,000 ms
コード長 3,977 bytes
コンパイル時間 3,542 ms
コンパイル使用メモリ 84,076 KB
実行使用メモリ 63,472 KB
平均クエリ数 3407.01
最終ジャッジ日時 2025-06-05 14:44:25
合計ジャッジ時間 38,061 ms
ジャッジサーバーID
（参考情報） 		judge3 / judge4
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ファイルパターン 結果
other AC * 80
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 # 

import java.io.*;
import java.util.*;
import java.util.function.*;
import java.util.stream.*;
import java.math.*;

public class Main {
    static FastScanner sc = new FastScanner();
    static List<Point> ans = new ArrayList<>();
    public static void main(String[] args) throws Exception {
        check(0, 1000000, 0, 1000000);
        System.out.println("! " + ans.size());
        System.out.println(ans.stream().map(x -> x.toString()).collect(Collectors.joining("\n")));
    }
    
    static void check(int left, int right, int up, int down) {
        System.out.println("? " + left + " " + right + " " + up + " " + down);
        System.out.flush();
        int x = sc.nextInt();
        if (x == 0) {
            return;
        }
        if (left == right) {
            if (up == down) {
                ans.add(new Point(left, up));
            } else {
                int m = (up + down) / 2;
                check(left, right, up, m);
                check(left, right, m + 1, down);
            }
        } else {
            int m = (left + right) / 2;
            check(left, m, up, down);
            check(m + 1, right, up, down);
        }
    }
    
    static class Point {
        int x;
        int y;
        
        public Point(int x, int y) {
            this.x = x;
            this.y = y;
        }
        
        public String toString() {
            return x + " " + y;
        }
    }
}

class FastScanner {
    private DataInputStream din;
    private byte[] buffer;
    private int bufferPointer, bytesRead;
    private static final int BUFFER_SIZE = 1 << 16; // 65,536 バイト

    public FastScanner() {
        din = new DataInputStream(System.in);
        buffer = new byte[BUFFER_SIZE];
        bufferPointer = bytesRead = 0;
    }

    private byte read() {
        try {
            if (bufferPointer == bytesRead) {
                bytesRead = din.read(buffer, 0, BUFFER_SIZE);
                if (bytesRead == -1) return -1;
                bufferPointer = 0;
            }
            return buffer[bufferPointer++];
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    public String next() {
        byte b = read();
        // 空白文字を読み飛ばす
        while (isSpaceChar(b)) {
            b = read();
        }
        StringBuilder sb = new StringBuilder();
        while (!isSpaceChar(b)) {
            sb.append((char) b);
            b = read();
        }
        return sb.toString();
    }

    public int nextInt() {
        int ret = 0;
        byte c = read();
        while (isSpaceChar(c)) c = read();
        boolean neg = (c == '-');
        if (neg) c = read();
        do {
            ret = ret * 10 + c - '0';
            c = read();
        } while (!isSpaceChar(c));
        return neg ? -ret : ret;
    }

    public long nextLong() {
        long ret = 0;
        byte c = read();
        while (isSpaceChar(c)) c = read();
        boolean neg = (c == '-');
        if (neg) c = read();
        do {
            ret = ret * 10L + c - '0';
            c = read();
        } while (!isSpaceChar(c));
        return neg ? -ret : ret;
    }

    public double nextDouble() {
        double ret = 0, div = 1;
        byte c = read();
        while (isSpaceChar(c)) c = read();
        boolean neg = (c == '-');
        if (neg) c = read();
        do {
            ret = ret * 10 + c - '0';
            c = read();
        } while (!isSpaceChar(c) && c != '.');
        if (c == '.') {
            while (!isSpaceChar(c = read())) {
                ret += (c - '0') / (div *= 10);
            }
        }
        return neg ? -ret : ret;
    }

    private boolean isSpaceChar(byte c) {
        return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
    }

    public void close() {
        try {
            if (din != null) din.close();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}
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