結果
問題 | No.793 うし数列 2 |
ユーザー | hiromi_ayase |
提出日時 | 2019-02-22 21:32:11 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 76 ms / 2,000 ms |
コード長 | 3,245 bytes |
コンパイル時間 | 2,477 ms |
コンパイル使用メモリ | 88,872 KB |
実行使用メモリ | 38,448 KB |
最終ジャッジ日時 | 2024-05-03 23:57:42 |
合計ジャッジ時間 | 5,045 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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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 | 72 ms
38,436 KB |
testcase_01 | AC | 70 ms
38,160 KB |
testcase_02 | AC | 72 ms
37,884 KB |
testcase_03 | AC | 69 ms
38,184 KB |
testcase_04 | AC | 69 ms
38,300 KB |
testcase_05 | AC | 69 ms
38,120 KB |
testcase_06 | AC | 70 ms
38,436 KB |
testcase_07 | AC | 71 ms
38,300 KB |
testcase_08 | AC | 70 ms
38,012 KB |
testcase_09 | AC | 70 ms
37,900 KB |
testcase_10 | AC | 73 ms
38,184 KB |
testcase_11 | AC | 75 ms
38,012 KB |
testcase_12 | AC | 76 ms
38,168 KB |
testcase_13 | AC | 73 ms
38,288 KB |
testcase_14 | AC | 72 ms
38,448 KB |
testcase_15 | AC | 71 ms
38,436 KB |
testcase_16 | AC | 75 ms
37,884 KB |
testcase_17 | AC | 71 ms
38,396 KB |
testcase_18 | AC | 71 ms
38,288 KB |
testcase_19 | AC | 70 ms
38,396 KB |
testcase_20 | AC | 70 ms
38,184 KB |
testcase_21 | AC | 69 ms
38,288 KB |
testcase_22 | AC | 72 ms
38,320 KB |
ソースコード
public class Main { private static void solve() { long n = nl(); //a[0] = 1, a[n] = a[n-1]*10 + 3 //a[n] + 1/3 = 10(a[n] + 1/3) //a[n] = 10^n * 4/3 - 1/3 int mod = 1000000000 + 7; long inv3 = invl(3, mod); long e = pow(10, n, mod) * 4 % mod * inv3 % mod + mod - inv3; e %= mod; System.out.println(e); } public static long invl(long a, long mod) { long b = mod; long p = 1, q = 0; while(b > 0){ long c = a / b; long d; d = a; a = b; b = d % b; d = p; p = q; q = d - c * q; } return p < 0 ? p + mod : p; } public static long pow(long a, long n, long mod) { long ret = 1; 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)); } }