結果

問題 No.1187 皇帝ペンギン
ユーザー hiromi_ayasehiromi_ayase
提出日時 2020-08-22 14:02:14
言語 Java21
(openjdk 21)
結果
AC  
実行時間 133 ms / 1,000 ms
コード長 2,943 bytes
コンパイル時間 3,234 ms
コンパイル使用メモリ 90,236 KB
実行使用メモリ 70,368 KB
平均クエリ数 21.96
最終ジャッジ日時 2024-07-17 06:15:37
合計ジャッジ時間 12,703 ms
ジャッジサーバーID
(参考情報)
judge4 / judge2
このコードへのチャレンジ
(要ログイン)

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 123 ms
69,672 KB
testcase_01 AC 120 ms
69,828 KB
testcase_02 AC 119 ms
69,808 KB
testcase_03 AC 120 ms
69,972 KB
testcase_04 AC 122 ms
69,648 KB
testcase_05 AC 131 ms
69,512 KB
testcase_06 AC 132 ms
70,096 KB
testcase_07 AC 119 ms
69,924 KB
testcase_08 AC 124 ms
69,788 KB
testcase_09 AC 132 ms
69,920 KB
testcase_10 AC 124 ms
70,216 KB
testcase_11 AC 121 ms
69,692 KB
testcase_12 AC 132 ms
69,968 KB
testcase_13 AC 130 ms
69,884 KB
testcase_14 AC 126 ms
70,328 KB
testcase_15 AC 130 ms
69,836 KB
testcase_16 AC 121 ms
69,400 KB
testcase_17 AC 125 ms
69,476 KB
testcase_18 AC 132 ms
69,688 KB
testcase_19 AC 123 ms
69,348 KB
testcase_20 AC 122 ms
69,512 KB
testcase_21 AC 132 ms
69,976 KB
testcase_22 AC 132 ms
69,668 KB
testcase_23 AC 123 ms
69,572 KB
testcase_24 AC 133 ms
69,508 KB
testcase_25 AC 124 ms
69,888 KB
testcase_26 AC 123 ms
69,924 KB
testcase_27 AC 133 ms
69,772 KB
testcase_28 AC 132 ms
69,712 KB
testcase_29 AC 119 ms
69,404 KB
testcase_30 AC 130 ms
69,540 KB
testcase_31 AC 120 ms
69,324 KB
testcase_32 AC 119 ms
70,016 KB
testcase_33 AC 123 ms
69,336 KB
testcase_34 AC 119 ms
69,592 KB
testcase_35 AC 129 ms
69,820 KB
testcase_36 AC 119 ms
69,676 KB
testcase_37 AC 123 ms
69,692 KB
testcase_38 AC 119 ms
69,840 KB
testcase_39 AC 131 ms
69,568 KB
testcase_40 AC 119 ms
69,548 KB
testcase_41 AC 130 ms
69,840 KB
testcase_42 AC 123 ms
70,368 KB
testcase_43 AC 118 ms
69,940 KB
testcase_44 AC 120 ms
69,736 KB
testcase_45 AC 120 ms
69,940 KB
testcase_46 AC 124 ms
69,836 KB
testcase_47 AC 120 ms
70,336 KB
testcase_48 AC 121 ms
69,552 KB
testcase_49 AC 120 ms
70,188 KB
testcase_50 AC 120 ms
69,588 KB
testcase_51 AC 123 ms
69,840 KB
testcase_52 AC 124 ms
69,976 KB
testcase_53 AC 119 ms
69,824 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 #

public class Main {

  private static void solve() {
    int ng = 1000;
    int ok = 0;

    while (Math.abs(ok - ng) > 1) {
      int x = (ng + ok) / 2;
      boolean b1 = ask(x + 0);
      boolean b2 = ask(x + 1);

      if (b1 || b2) {
        ok = x;
      } else {
        ng = x;
      }
    }

    boolean b2 = ask(ok + 1);
    answer(b2 ? ok + 1 : ok);
  }

  private static boolean ask(int x) {
    System.out.println("? " + x);
    System.out.flush();

    return next().equals("safe");
  }

  private static void answer(int x) {
    System.out.println("! " + x);
    System.out.flush();
  }

  public static void main(String[] args) {
    new Thread(null, new Runnable() {
      @Override
      public void run() {
        long start = System.currentTimeMillis();
        String debug = args.length > 0 ? args[0] : null;
        if (debug != null) {
          try {
            is = java.nio.file.Files.newInputStream(java.nio.file.Paths.get(debug));
          } catch (Exception e) {
            throw new RuntimeException(e);
          }
        }
        reader = new java.io.BufferedReader(new java.io.InputStreamReader(is), 32768);
        solve();
        out.flush();
        tr((System.currentTimeMillis() - start) + "ms");
      }
    }, "", 64000000).start();
  }

  private static java.io.InputStream is = System.in;
  private static java.io.PrintWriter out = new java.io.PrintWriter(System.out);
  private static java.util.StringTokenizer tokenizer = null;
  private static java.io.BufferedReader reader;

  public static String next() {
    while (tokenizer == null || !tokenizer.hasMoreTokens()) {
      try {
        tokenizer = new java.util.StringTokenizer(reader.readLine());
      } catch (Exception e) {
        throw new RuntimeException(e);
      }
    }
    return tokenizer.nextToken();
  }

  private static double nd() {
    return Double.parseDouble(next());
  }

  private static long nl() {
    return Long.parseLong(next());
  }

  private static int[] na(int n) {
    int[] a = new int[n];
    for (int i = 0; i < n; i++)
      a[i] = ni();
    return a;
  }

  private static char[] ns() {
    return next().toCharArray();
  }

  private static long[] nal(int n) {
    long[] a = new long[n];
    for (int i = 0; i < n; i++)
      a[i] = nl();
    return a;
  }

  private static int[][] ntable(int n, int m) {
    int[][] table = new int[n][m];
    for (int i = 0; i < n; i++) {
      for (int j = 0; j < m; j++) {
        table[i][j] = ni();
      }
    }
    return table;
  }

  private static int[][] nlist(int n, int m) {
    int[][] table = new int[m][n];
    for (int i = 0; i < n; i++) {
      for (int j = 0; j < m; j++) {
        table[j][i] = ni();
      }
    }
    return table;
  }

  private static int ni() {
    return Integer.parseInt(next());
  }

  private static void tr(Object... o) {
    if (is != System.in)
      System.out.println(java.util.Arrays.deepToString(o));
  }
}
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