結果
問題 | No.1184 Hà Nội |
ユーザー | hiromi_ayase |
提出日時 | 2020-08-22 13:18:06 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 80 ms / 2,000 ms |
コード長 | 2,936 bytes |
コンパイル時間 | 5,306 ms |
コンパイル使用メモリ | 89,756 KB |
実行使用メモリ | 51,344 KB |
最終ジャッジ日時 | 2024-10-15 07:29:59 |
合計ジャッジ時間 | 5,650 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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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 | 78 ms
51,152 KB |
testcase_01 | AC | 78 ms
50,760 KB |
testcase_02 | AC | 77 ms
51,188 KB |
testcase_03 | AC | 79 ms
51,156 KB |
testcase_04 | AC | 77 ms
51,276 KB |
testcase_05 | AC | 78 ms
51,148 KB |
testcase_06 | AC | 76 ms
51,228 KB |
testcase_07 | AC | 79 ms
51,300 KB |
testcase_08 | AC | 77 ms
51,032 KB |
testcase_09 | AC | 76 ms
51,104 KB |
testcase_10 | AC | 77 ms
51,200 KB |
testcase_11 | AC | 78 ms
50,964 KB |
testcase_12 | AC | 80 ms
51,260 KB |
testcase_13 | AC | 77 ms
51,188 KB |
testcase_14 | AC | 78 ms
51,128 KB |
testcase_15 | AC | 78 ms
51,284 KB |
testcase_16 | AC | 79 ms
51,192 KB |
testcase_17 | AC | 78 ms
51,344 KB |
testcase_18 | AC | 78 ms
51,216 KB |
testcase_19 | AC | 78 ms
51,188 KB |
testcase_20 | AC | 77 ms
51,116 KB |
testcase_21 | AC | 79 ms
51,192 KB |
testcase_22 | AC | 77 ms
50,980 KB |
testcase_23 | AC | 78 ms
51,288 KB |
testcase_24 | AC | 78 ms
51,216 KB |
testcase_25 | AC | 78 ms
51,044 KB |
testcase_26 | AC | 77 ms
51,300 KB |
testcase_27 | AC | 77 ms
51,180 KB |
testcase_28 | AC | 78 ms
51,212 KB |
ソースコード
public class Main { private static void solve() { long n = nl(); long l = nl(); int mod = 998244353; n = (n + l - 1) / l; // a[n] = 2a[n-1] + 1 // a[n] + 1 = 2(a[n-1] + 1) // a[n] = 2^n - 1; long ans = pow(2, n, mod) + mod - 1; System.out.println(ans % mod); } public static long pow(long a, long n, long mod) { // a %= mod; long ret = 1; // 1%mod if mod=1,n=0 int x = 63 - Long.numberOfLeadingZeros(n); for (; x >= 0; x--) { ret = ret * ret % mod; if (n << ~x < 0) ret = ret * a % mod; } return ret; } 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)); } }