結果

問題 No.253 ロウソクの長さ
ユーザー Grenache
提出日時 2015-07-27 17:02:28
言語 Java
(openjdk 23)
結果
AC  
実行時間 166 ms / 2,000 ms
コード長 2,188 bytes
コンパイル時間 3,947 ms
コンパイル使用メモリ 78,496 KB
実行使用メモリ 58,268 KB
平均クエリ数 48.97
最終ジャッジ日時 2024-07-16 20:51:43
合計ジャッジ時間 11,586 ms
ジャッジサーバーID
(参考情報)
judge5 / judge1
このコードへのチャレンジ
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ファイルパターン 結果
other AC * 36
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 #
プレゼンテーションモードにする

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Iterator;
public class Main_yukicoder253 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
Printer pr = new Printer(System.out);
int count = 1;
if (ask(sc, pr, 40) < 0) {
while (ask(sc, pr, 9) > 0) {
count++;
}
pr.printf("! %d\n", 9 + count);
} else {
int l = 39;
int r = 1000000001;
while (r > l) {
int mid = (r + l) / 2;
count++;
if (ask(sc, pr, mid) <= 0) {
r = mid;
} else {
l = mid + 1;
}
}
int tmp = r - count;
while (ask(sc, pr, tmp) > 0) {
count++;
}
pr.printf("! %d\n", tmp + count);
}
pr.close();
sc.close();
}
private static int ask(Scanner sc, Printer pr, int i) {
pr.printf("? %d\n", i);
pr.flush();
return sc.nextInt();
}
@SuppressWarnings("unused")
private static class Scanner {
BufferedReader br;
Iterator<String> it;
Scanner (InputStream in) {
br = new BufferedReader(new InputStreamReader(in));
}
String next() throws RuntimeException {
try {
if (it == null || !it.hasNext()) {
it = Arrays.asList(br.readLine().split(" ")).iterator();
}
return it.next();
} catch (IOException e) {
throw new IllegalStateException();
}
}
int nextInt() throws RuntimeException {
return Integer.parseInt(next());
}
long nextLong() throws RuntimeException {
return Long.parseLong(next());
}
float nextFloat() throws RuntimeException {
return Float.parseFloat(next());
}
double nextDouble() throws RuntimeException {
return Double.parseDouble(next());
}
void close() {
try {
br.close();
} catch (IOException e) {
// throw new IllegalStateException();
}
}
}
private static class Printer extends PrintWriter {
Printer(PrintStream out) {
super(out);
}
}
}
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