結果
問題 | No.1271 初めての級数 |
ユーザー |
![]() |
提出日時 | 2020-10-30 21:36:22 |
言語 | Java17 (openjdk 17.0.1) |
結果 |
AC
|
実行時間 | 157 ms / 2,000 ms |
コード長 | 2,610 bytes |
コンパイル時間 | 1,709 ms |
使用メモリ | 48,940 KB |
最終ジャッジ日時 | 2023-02-21 11:21:38 |
合計ジャッジ時間 | 4,853 ms |
ジャッジサーバーID (参考情報) |
judge12 / judge13 |
テストケース
テストケース表示入力 | 結果 | 実行時間 使用メモリ |
---|---|---|
testcase_00 | AC | 144 ms
48,824 KB |
testcase_01 | AC | 157 ms
48,656 KB |
testcase_02 | AC | 151 ms
48,900 KB |
testcase_03 | AC | 135 ms
48,896 KB |
testcase_04 | AC | 151 ms
48,920 KB |
testcase_05 | AC | 151 ms
48,828 KB |
testcase_06 | AC | 141 ms
48,872 KB |
testcase_07 | AC | 149 ms
48,824 KB |
testcase_08 | AC | 151 ms
48,940 KB |
testcase_09 | AC | 141 ms
48,892 KB |
testcase_10 | AC | 149 ms
48,828 KB |
testcase_11 | AC | 141 ms
48,832 KB |
testcase_12 | AC | 154 ms
48,808 KB |
ソースコード
import java.util.*; import java.io.*; public class Main { public static void main(String[] args) throws Exception { FastScanner sc = new FastScanner(System.in); PrintWriter pw = new PrintWriter(System.out); long k = sc.nextLong(); double now = 0d; for(long i = 1; i <= 10000000L; i++){ now += 1/(double)(i*(k+i)); } pw.println(now); pw.flush(); } static class GeekInteger { public static void save_sort(int[] array) { shuffle(array); Arrays.sort(array); } public static int[] shuffle(int[] array) { int n = array.length; Random random = new Random(); for (int i = 0, j; i < n; i++) { j = i + random.nextInt(n - i); int randomElement = array[j]; array[j] = array[i]; array[i] = randomElement; } return array; } } } class FastScanner { private BufferedReader reader = null; private StringTokenizer tokenizer = null; public FastScanner(InputStream in) { reader = new BufferedReader(new InputStreamReader(in)); tokenizer = null; } public String next() { if (tokenizer == null || !tokenizer.hasMoreTokens()) { try { tokenizer = new StringTokenizer(reader.readLine()); } catch (IOException e) { throw new RuntimeException(e); } } return tokenizer.nextToken(); } public String nextLine() { if (tokenizer == null || !tokenizer.hasMoreTokens()) { try { return reader.readLine(); } catch (IOException e) { throw new RuntimeException(e); } } return tokenizer.nextToken("\n"); } public long nextLong() { return Long.parseLong(next()); } public int nextInt() { return Integer.parseInt(next()); } public double nextDouble() { return Double.parseDouble(next()); } public String[] nextArray(int n) { String[] a = new String[n]; for (int i = 0; i < n; i++) a[i] = next(); return a; } public int[] nextIntArray(int n) { int[] a = new int[n]; for (int i = 0; i < n; i++) a[i] = nextInt(); return a; } public long[] nextLongArray(int n) { long[] a = new long[n]; for (int i = 0; i < n; i++) a[i] = nextLong(); return a; } }