結果
問題 | No.58 イカサマなサイコロ |
ユーザー |
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提出日時 | 2023-04-14 09:16:04 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 58 ms / 5,000 ms |
コード長 | 2,470 bytes |
コンパイル時間 | 2,774 ms |
コンパイル使用メモリ | 84,048 KB |
実行使用メモリ | 37,340 KB |
最終ジャッジ日時 | 2024-10-10 02:30:48 |
合計ジャッジ時間 | 4,016 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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ファイルパターン | 結果 |
---|---|
other | AC * 10 |
ソースコード
import java.io.*;import java.util.*;import java.util.stream.*;public class Main {public static void main(String[] args) throws Exception {Scanner sc = new Scanner();int n = sc.nextInt();int k = sc.nextInt();double[][] taro = new double[n + 1][n * 6 + 1];double[][] jiro = new double[n + 1][n * 6 + 1];taro[0][0] = 1;jiro[0][0] = 1;for (int i = 1; i <= n; i++) {for (int j = 0; j <= (i - 1) * 6; j++) {if (i <= k) {for (int a = 4; a <= 6; a++) {taro[i][j + a] += taro[i - 1][j] / 3;}} else {for (int a = 1; a <= 6; a++) {taro[i][j + a] += taro[i - 1][j] / 6;}}for (int a = 1; a <= 6; a++) {jiro[i][j + a] += jiro[i - 1][j] / 6;}}}double[] sum = new double[n * 6 + 1];double ans = 0;for (int i = 1; i < sum.length - 1; i++) {sum[i] = sum[i - 1] + jiro[n][i];ans += sum[i] * taro[n][i + 1];}System.out.println(ans);}}class Utilities {static String arrayToLineString(Object[] arr) {return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n"));}static String arrayToLineString(int[] arr) {return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new));}}class Scanner {BufferedReader br = new BufferedReader(new InputStreamReader(System.in));StringTokenizer st = new StringTokenizer("");StringBuilder sb = new StringBuilder();public Scanner() throws Exception {}public int nextInt() throws Exception {return Integer.parseInt(next());}public long nextLong() throws Exception {return Long.parseLong(next());}public double nextDouble() throws Exception {return Double.parseDouble(next());}public int[] nextIntArray() throws Exception {return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();}public String next() throws Exception {while (!st.hasMoreTokens()) {st = new StringTokenizer(br.readLine());}return st.nextToken();}}