結果
問題 | No.343 手抜き工事のプロ |
ユーザー |
|
提出日時 | 2016-02-13 00:01:01 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 205 ms / 2,000 ms |
コード長 | 2,173 bytes |
コンパイル時間 | 3,513 ms |
コンパイル使用メモリ | 79,124 KB |
実行使用メモリ | 57,760 KB |
最終ジャッジ日時 | 2024-09-22 05:07:55 |
合計ジャッジ時間 | 6,759 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
other | AC * 27 |
ソースコード
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_yukicoder343 {public static void main(String[] args) {Scanner sc = new Scanner(System.in);Printer pr = new Printer(System.out);int n = sc.nextInt();int l = sc.nextInt();int[] x = new int[n];for (int i = 1; i < n; i++) {x[i] = sc.nextInt();}if (n == 1) {pr.println(0);} else {double h = (double)l / 2;int g = x[n - 1];int ret = 0;for (int i = n - 2; i >= 0; i--) {int m = n - 1 - i;if (Math.abs(x[i + 1] - x[i]) >= l) {ret = -1;break;} else if (Math.abs((double)x[i] - (double)g / m) >= h || Math.abs((double)x[i + 1] - (double)g / m) >= h) {ret++;}g += x[i];}pr.println(ret);}pr.close();sc.close();}@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);}}}