結果

問題 No.644 G L C C D M
ユーザー hiromi_ayasehiromi_ayase
提出日時 2018-02-02 21:58:46
言語 Java21
(openjdk 21)
結果
WA  
実行時間 -
コード長 2,825 bytes
コンパイル時間 2,428 ms
コンパイル使用メモリ 80,448 KB
実行使用メモリ 53,040 KB
最終ジャッジ日時 2023-08-30 02:10:28
合計ジャッジ時間 5,745 ms
ジャッジサーバーID
(参考情報)
judge15 / judge11
このコードへのチャレンジ
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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 74 ms
50,548 KB
testcase_01 AC 74 ms
50,720 KB
testcase_02 AC 74 ms
50,704 KB
testcase_03 AC 74 ms
50,548 KB
testcase_04 AC 75 ms
50,684 KB
testcase_05 WA -
testcase_06 WA -
testcase_07 WA -
testcase_08 WA -
testcase_09 AC 74 ms
50,816 KB
testcase_10 AC 76 ms
50,792 KB
testcase_11 WA -
testcase_12 AC 74 ms
50,548 KB
testcase_13 WA -
testcase_14 WA -
testcase_15 AC 75 ms
50,596 KB
testcase_16 AC 75 ms
50,600 KB
testcase_17 AC 76 ms
50,756 KB
testcase_18 AC 74 ms
50,824 KB
testcase_19 AC 74 ms
50,596 KB
testcase_20 AC 76 ms
50,824 KB
testcase_21 AC 75 ms
50,976 KB
testcase_22 WA -
testcase_23 WA -
testcase_24 WA -
testcase_25 AC 77 ms
51,048 KB
testcase_26 AC 76 ms
50,576 KB
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ソースコード

diff #

public class Main {

	private static void solve() {
		int n = ni();
		int m = ni();
		int mod = 1000000000 + 7;
		long[] f = new long[100001];
		f[0] = 1;
		for (int i = 1; i < f.length; i ++) {
			f[i] = (f[i - 1] * i) % mod;
		}
		
		long ret = 0;
		if (m > 1) {
			boolean flg = false;
			for (long i = m; i <= n; i *= m) {
				long x = n / i;
				ret += x * (x - 1) * (flg ? -1 : +1);
				ret %= mod;
			}
		} else {
			ret += n - 1;
			for (int i = 2; i <= n; i ++) {
				ret += n - n / i;
			}
		}
		ret *= f[n - 2];
		ret %= mod;
		System.out.println(ret);
	}

	public static int gcd(int a, int b)
	{
		while(b > 0){int c = a; a = b; b = c % b; }
		return a;
	}
	
	
	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));
	}
}
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