結果

問題 No.246 質問と回答
ユーザー yuya178yuya178
提出日時 2017-11-25 22:18:39
言語 Java21
(openjdk 21)
結果
AC  
実行時間 141 ms / 2,000 ms
コード長 4,031 bytes
コンパイル時間 2,809 ms
コンパイル使用メモリ 86,864 KB
実行使用メモリ 68,212 KB
平均クエリ数 30.87
最終ジャッジ日時 2024-07-16 20:14:45
合計ジャッジ時間 8,938 ms
ジャッジサーバーID
（参考情報） 		judge4 / 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 138 ms
67,648 KB
testcase_01 AC 133 ms
67,744 KB
testcase_02 AC 133 ms
67,888 KB
testcase_03 AC 136 ms
67,644 KB
testcase_04 AC 132 ms
67,772 KB
testcase_05 AC 132 ms
67,536 KB
testcase_06 AC 135 ms
67,288 KB
testcase_07 AC 134 ms
67,272 KB
testcase_08 AC 135 ms
67,892 KB
testcase_09 AC 137 ms
67,408 KB
testcase_10 AC 141 ms
67,440 KB
testcase_11 AC 131 ms
67,332 KB
testcase_12 AC 133 ms
67,408 KB
testcase_13 AC 133 ms
67,688 KB
testcase_14 AC 134 ms
67,232 KB
testcase_15 AC 135 ms
67,692 KB
testcase_16 AC 133 ms
67,884 KB
testcase_17 AC 136 ms
67,536 KB
testcase_18 AC 135 ms
67,808 KB
testcase_19 AC 133 ms
67,792 KB
testcase_20 AC 132 ms
67,492 KB
testcase_21 AC 132 ms
68,052 KB
testcase_22 AC 133 ms
67,796 KB
testcase_23 AC 135 ms
67,644 KB
testcase_24 AC 139 ms
67,508 KB
testcase_25 AC 134 ms
67,532 KB
testcase_26 AC 135 ms
67,724 KB
testcase_27 AC 132 ms
67,500 KB
testcase_28 AC 132 ms
67,784 KB
testcase_29 AC 133 ms
68,212 KB
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ソースコード

diff # 

import java.io.*;
import java.util.*;
import java.math.*;
import java.awt.Point;

public class Main {
    InputStream is;
    PrintWriter out;
    String INPUT = "";
    void solve()
    {
        int left = 0;
        int right = 1000000000;
        while(left+1<right){
            int res = (left+right)/2;
            if(go(res)==1) left = res;
            else right = res;
        }
        out.println("! "+left);
        out.flush();
    }

    int go(int n){
        out.println("? "+n);
        out.flush();
        int a = ni();
        return a;
    }
    int test(int n){
        int k = 1000;
        if(n<=k) return 1;
        else return 0;
    }
    
    void run() throws Exception
    {
        is = INPUT.isEmpty() ? System.in : new ByteArrayInputStream(INPUT.getBytes());
        out = new PrintWriter(System.out);
        
        long s = System.currentTimeMillis();
        solve();
        out.flush();
        if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms");
    }
    
    public static void main(String[] args) throws Exception { new Main().run(); }
    
    private byte[] inbuf = new byte[1024];
    private int lenbuf = 0, ptrbuf = 0;
    
    private 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 boolean isSpaceChar(int c) { return !(c >= 33 && c <= 126); }
    private int skip() { int b; while((b = readByte()) != -1 && isSpaceChar(b)); return b; }
    
    private double nd() { return Double.parseDouble(ns()); }
    private char nc() { return (char)skip(); }
    
    private String ns()
    {
        int b = skip();
        StringBuilder sb = new StringBuilder();
        while(!(isSpaceChar(b) && b != ' ')){
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }
    
    private 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 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 int[] na(int n)
    {
        int[] a = new int[n];
        for(int i = 0;i < n;i++)a[i] = ni();
        return a;
    }
    
    private 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 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) { System.out.println(Arrays.deepToString(o)); }

    static class ArrayUtils {
        public static void fill(double[][] array, double value) {
            for (double[] a : array) Arrays.fill(a, value);
        }
 
        public static void fill(double[][][] array, double value) {
            for (double[][] l : array) fill(l, value);
        } 
    }
}
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