結果
問題 | No.243 出席番号(2) |
ユーザー | hiromi_ayase |
提出日時 | 2019-03-10 10:51:35 |
言語 | Java21 (openjdk 21) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,018 bytes |
コンパイル時間 | 2,436 ms |
コンパイル使用メモリ | 82,576 KB |
実行使用メモリ | 54,520 KB |
最終ジャッジ日時 | 2024-06-23 15:16:47 |
合計ジャッジ時間 | 9,660 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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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
51,040 KB |
testcase_01 | AC | 78 ms
51,384 KB |
testcase_02 | AC | 77 ms
51,052 KB |
testcase_03 | AC | 119 ms
52,216 KB |
testcase_04 | AC | 117 ms
52,368 KB |
testcase_05 | AC | 121 ms
52,192 KB |
testcase_06 | AC | 115 ms
52,164 KB |
testcase_07 | WA | - |
testcase_08 | AC | 156 ms
52,096 KB |
testcase_09 | AC | 156 ms
52,448 KB |
testcase_10 | AC | 158 ms
52,312 KB |
testcase_11 | AC | 156 ms
52,216 KB |
testcase_12 | WA | - |
testcase_13 | AC | 221 ms
52,308 KB |
testcase_14 | AC | 220 ms
52,236 KB |
testcase_15 | AC | 219 ms
52,348 KB |
testcase_16 | AC | 223 ms
52,396 KB |
testcase_17 | WA | - |
testcase_18 | AC | 308 ms
52,408 KB |
testcase_19 | AC | 310 ms
52,424 KB |
testcase_20 | AC | 308 ms
52,640 KB |
testcase_21 | AC | 306 ms
54,520 KB |
testcase_22 | WA | - |
testcase_23 | AC | 433 ms
52,936 KB |
testcase_24 | AC | 430 ms
52,552 KB |
testcase_25 | AC | 431 ms
52,908 KB |
testcase_26 | AC | 425 ms
52,644 KB |
testcase_27 | AC | 429 ms
52,616 KB |
testcase_28 | AC | 77 ms
51,176 KB |
testcase_29 | AC | 76 ms
51,268 KB |
testcase_30 | AC | 77 ms
50,964 KB |
testcase_31 | AC | 75 ms
51,392 KB |
testcase_32 | AC | 78 ms
51,364 KB |
ソースコード
public class Main { private static void solve() { int n = ni(); int[] x = new int[n]; 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)); } }