結果

問題 No.246 質問と回答
ユーザー OlandOland
提出日時 2019-05-07 11:12:17
言語 Java21
(openjdk 21)
結果
AC  
実行時間 135 ms / 2,000 ms
コード長 3,668 bytes
コンパイル時間 2,668 ms
コンパイル使用メモリ 85,504 KB
実行使用メモリ 67,964 KB
平均クエリ数 30.90
最終ジャッジ日時 2024-07-16 20:21:09
合計ジャッジ時間 7,776 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge3
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 124 ms
67,312 KB
testcase_01 AC 124 ms
67,648 KB
testcase_02 AC 124 ms
67,448 KB
testcase_03 AC 126 ms
67,268 KB
testcase_04 AC 124 ms
67,652 KB
testcase_05 AC 123 ms
67,780 KB
testcase_06 AC 126 ms
67,448 KB
testcase_07 AC 122 ms
67,596 KB
testcase_08 AC 123 ms
67,692 KB
testcase_09 AC 124 ms
67,456 KB
testcase_10 AC 122 ms
67,484 KB
testcase_11 AC 126 ms
67,368 KB
testcase_12 AC 125 ms
67,456 KB
testcase_13 AC 126 ms
67,792 KB
testcase_14 AC 125 ms
67,704 KB
testcase_15 AC 124 ms
67,804 KB
testcase_16 AC 128 ms
67,776 KB
testcase_17 AC 122 ms
67,648 KB
testcase_18 AC 122 ms
67,600 KB
testcase_19 AC 127 ms
67,872 KB
testcase_20 AC 125 ms
67,964 KB
testcase_21 AC 135 ms
67,308 KB
testcase_22 AC 124 ms
67,424 KB
testcase_23 AC 128 ms
67,488 KB
testcase_24 AC 124 ms
67,396 KB
testcase_25 AC 125 ms
67,572 KB
testcase_26 AC 123 ms
67,684 KB
testcase_27 AC 126 ms
67,416 KB
testcase_28 AC 123 ms
67,432 KB
testcase_29 AC 128 ms
67,540 KB
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ソースコード

diff # 

import java.io.*;
import java.util.*;
import java.util.Map.Entry;
import java.util.stream.Collectors;

@SuppressWarnings("unused")
public class Main {
	
	//final boolean isDebug = true;
	final boolean isDebug = false;
	String fileName = "input.txt";
	FastScanner sc;
	PrintWriter out;
	final int MOD = (int)1e9+7;
	final int INF = Integer.MAX_VALUE / 2;
	
	void solve() throws Exception{
		long ok = 1, ng = (long)1e9+1;
		for(int i = 0; i < 100 && ng - ok > 1; i++){
			long mid = (ok + ng) / 2;
			System.out.println("? " + mid);
			System.out.flush();
			if(sc.next().equals("1")) ok = mid;
			else ng = mid;
		}
		System.out.println("! " + ok);
		System.out.flush();
	}
	
	/* end solve */
	
	/* main */
	public static void main(String[] args) throws Exception {
		new Main().m();
	}
	
	void m() throws Exception {
		long S = System.currentTimeMillis();
		sc = (isDebug) ? new FastScanner(new FileInputStream(fileName)) : new FastScanner(System.in);
		out = new PrintWriter(System.out);
		solve();
		out.flush();
		long G = System.currentTimeMillis();
		if(isDebug){
			System.out.println("---Debug---");
			System.out.printf("%8d ms\n", (G-S));
		}
	}
	/* end main */
}
/* end Main */

class FastScanner {
    private InputStream in;
    private final byte[] buffer = new byte[1024];
    private int ptr = 0;
    private int buflen = 0;
    public FastScanner(InputStream in) {
		this.in = in;
	}
    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 String nextLine() {
        if (!hasNext()) throw new NoSuchElementException();
        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while(b != 10) {
            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());
    }
}
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