結果
問題 | No.243 出席番号(2) |
ユーザー | hiromi_ayase |
提出日時 | 2019-03-10 10:55:47 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 429 ms / 2,000 ms |
コード長 | 3,021 bytes |
コンパイル時間 | 2,517 ms |
コンパイル使用メモリ | 90,084 KB |
実行使用メモリ | 53,000 KB |
最終ジャッジ日時 | 2024-06-23 15:16:58 |
合計ジャッジ時間 | 10,369 ms |
ジャッジサーバーID (参考情報) |
judge4 / 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 | 77 ms
51,348 KB |
testcase_01 | AC | 80 ms
51,428 KB |
testcase_02 | AC | 78 ms
51,344 KB |
testcase_03 | AC | 119 ms
52,232 KB |
testcase_04 | AC | 118 ms
52,264 KB |
testcase_05 | AC | 119 ms
52,276 KB |
testcase_06 | AC | 120 ms
52,228 KB |
testcase_07 | AC | 120 ms
52,380 KB |
testcase_08 | AC | 159 ms
52,304 KB |
testcase_09 | AC | 159 ms
52,080 KB |
testcase_10 | AC | 159 ms
52,444 KB |
testcase_11 | AC | 161 ms
52,260 KB |
testcase_12 | AC | 160 ms
52,384 KB |
testcase_13 | AC | 217 ms
52,256 KB |
testcase_14 | AC | 216 ms
52,408 KB |
testcase_15 | AC | 219 ms
52,288 KB |
testcase_16 | AC | 220 ms
52,216 KB |
testcase_17 | AC | 220 ms
52,356 KB |
testcase_18 | AC | 306 ms
52,392 KB |
testcase_19 | AC | 296 ms
52,300 KB |
testcase_20 | AC | 306 ms
52,660 KB |
testcase_21 | AC | 305 ms
52,388 KB |
testcase_22 | AC | 302 ms
52,580 KB |
testcase_23 | AC | 424 ms
52,796 KB |
testcase_24 | AC | 425 ms
52,784 KB |
testcase_25 | AC | 429 ms
52,700 KB |
testcase_26 | AC | 422 ms
52,548 KB |
testcase_27 | AC | 418 ms
53,000 KB |
testcase_28 | AC | 77 ms
51,336 KB |
testcase_29 | AC | 77 ms
51,264 KB |
testcase_30 | AC | 77 ms
51,404 KB |
testcase_31 | AC | 76 ms
51,180 KB |
testcase_32 | AC | 77 ms
51,308 KB |
ソースコード
public class Main { private static void solve() { int n = ni(); int[] x = new int[5000]; for (int i = 0; i < n; i++) { x[ni()]++; } int mod = (int) (1e9 + 7); long[] f = new long[n + 1]; f[0] = 1; for (int i = 1; i <= n; i++) { f[i] = f[i - 1] * i % mod; } long[] dp = new long[n + 1]; dp[0] = 1; for (int i = 0; i < n; i++) { for (int j = n - 1; j >= 0; j--) { dp[j+1] += dp[j] * x[i]; dp[j] %= mod; } } long ret = 0; for (int i = 0; i <= n; i++) { ret += f[n - i] * dp[i] % mod * (i % 2 == 0 ? 1 : (mod-1)); ret %= mod; } System.out.println(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)); } }