結果
| 問題 | No.368 LCM of K-products |
| ユーザー |
 りあん
|
| 提出日時 | 2016-04-29 23:18:56 |
| 言語 | C#(csc) (csc 3.9.0) |
| 結果 |
AC
|
| 実行時間 | 197 ms / 2,000 ms |
| コード長 | 6,845 bytes |
| コンパイル時間 | 972 ms |
| コンパイル使用メモリ | 119,120 KB |
| 実行使用メモリ | 29,536 KB |
| 最終ジャッジ日時 | 2024-09-22 14:42:59 |
| 合計ジャッジ時間 | 3,746 ms |
|
ジャッジサーバーID （参考情報） |
judge1 / judge2 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| other | AC * 35 |
コンパイルメッセージ
Microsoft (R) Visual C# Compiler version 3.9.0-6.21124.20 (db94f4cc) Copyright (C) Microsoft Corporation. All rights reserved.
ソースコード
using System;using System.Collections.Generic;using System.Linq;using System.IO;using System.Text;using Point = System.Tuple<double, double>;class Program{const int M = 1000000007;const double eps = 1e-9;static int[] dd = { 0, 1, 0, -1, 0 };static int[] ddd = { 1, 1, -1, -1, 1};static void Main(){var sw = new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false };var sc = new Scan();int n, k;sc.Multi(out n, out k);var a = sc.IntArr;var dic = new SortedDictionary<int, List<int>>();for (int i = 0; i < n; i++){int t = a[i], j = 2;while (j * j <= t){int c = 0;while (t % j == 0){t /= j;++c;}if (c > 0){if (!dic.ContainsKey(j))dic.Add(j, new List<int>());dic[j].Add(c);}++j;}if (t == 1) continue;if (!dic.ContainsKey(t))dic.Add(t, new List<int>());dic[t].Add(1);}long ans = 1;var mt = new mymath();foreach (var item in dic){var lis = item.Value;lis.Sort();int lim = Math.Min(lis.Count, k);int m = 0;for (int i = lis.Count - lim; i < lis.Count; i++){m += lis[i];}ans = ans * mt.powmod(item.Key, m, M) % M;}sw.WriteLine(ans);sw.Flush();}static void swap<T>(ref T a, ref T b) { var t = a; a = b; b = t; }static T[] copy<T>(T[] a){var ret = new T[a.Length];for (int i = 0; i < a.Length; i++) ret[i] = a[i];return ret;}static T[][] copy2<T>(T[][] a){var ret = new T[a.Length][];for (int i = 0; i < a.Length; i++){ret[i] = new T[a[0].Length];for (int j = 0; j < a[0].Length; j++) ret[i][j] = a[i][j];}return ret;}}class Scan{public int Int { get { return int.Parse(Console.ReadLine().Trim()); } }public long Long { get { return long.Parse(Console.ReadLine().Trim()); } }public string Str { get { return Console.ReadLine().Trim(); } }public int[] IntArr { get { return Console.ReadLine().Trim().Split().Select(int.Parse).ToArray(); } }public int[] IntArrWithSep(char sep) { return Console.ReadLine().Trim().Split(sep).Select(int.Parse).ToArray(); }public long[] LongArr { get { return Console.ReadLine().Trim().Split().Select(long.Parse).ToArray(); } }public double[] DoubleArr { get { return Console.ReadLine().Split().Select(double.Parse).ToArray(); } }public string[] StrArr { get { return Console.ReadLine().Trim().Split(); } }public void Multi(out int a, out int b) { var arr = IntArr; a = arr[0]; b = arr[1]; }public void Multi(out int a, out int b, out int c) { var arr = IntArr; a = arr[0]; b = arr[1]; c = arr[2]; }public void Multi(out int a, out int b, out int c, out int d) { var arr = IntArr; a = arr[0]; b = arr[1]; c = arr[2]; d = arr[3]; }public void Multi(out int a, out string b) { var arr = StrArr; a = int.Parse(arr[0]); b = arr[1]; }public void Multi(out string a, out int b) { var arr = StrArr; a = arr[0]; b = int.Parse(arr[1]); }public void Multi(out int a, out int b, out string c) { var arr = StrArr; a = int.Parse(arr[0]); b = int.Parse(arr[1]); c = arr[2]; }public void Multi(out int a, out char b) { var arr = StrArr; a = int.Parse(arr[0]); b = arr[1][0]; }public void Multi(out char a, out int b) { var arr = StrArr; a = arr[0][0]; b = int.Parse(arr[1]); }public void Multi(out long a, out long b) { var arr = LongArr; a = arr[0]; b = arr[1]; }public void Multi(out long a, out int b) { var arr = LongArr; a = arr[0]; b = (int)arr[1]; }public void Multi(out int a, out long b) { var arr = LongArr; a = (int)arr[0]; b = arr[1]; }public void Multi(out string a, out string b) { var arr = StrArr; a = arr[0]; b = arr[1]; }}class mymath{public bool isprime(long a){if (a < 2) return false;for (long i = 2; i * i <= a; i++) if (a % i == 0) return false;return true;}public long[][] powmat(long[][] A, long n, int M){var E = new long[A.Length][];for (int i = 0; i < A.Length; i++){E[i] = new long[A.Length];E[i][i] = 1;}if (n == 0) return E;var t = powmat(A, n / 2, M);if ((n & 1) == 0) return mulmat(t, t, M);return mulmat(mulmat(t, t, M), A, M);}public long[] mulmat(long[][] A, long[] x, int M){var ans = new long[A.Length];for (int i = 0; i < A.Length; i++) for (int j = 0; j < x.Length; j++) ans[i] = (ans[i] + x[j] * A[i][j]) % M;return ans;}public long[][] mulmat(long[][] A, long[][] B, int M){var ans = new long[A.Length][];for (int i = 0; i < A.Length; i++){ans[i] = new long[B[0].Length];for (int j = 0; j < B[0].Length; j++) for (int k = 0; k < B.Length; k++) ans[i][j] = (ans[i][j] + A[i][k] * B[k][j]) % M;}return ans;}public long powmod(long a, long b, long M){if (a == 0) return 0;if (b == 0) return 1;var t = powmod(a, b / 2, M);if ((b & 1) == 0) return t * t % M;return t * t % M * a % M;}public long gcd(long a, long b){while (b > 0) { var t = a % b; a = b; b = t; }return a;}public long lcm(long a, long b) { return a * (b / gcd(a, b)); }public long Comb(int n, int r){const int M = 1000000007;if (n < 0 || r < 0 || r > n) return 0;if (n - r < r) r = n - r;if (r == 0) return 1;if (r == 1) return n;var numerator = new int[r];var denominator = new int[r];for (int k = 0; k < r; k++){numerator[k] = n - r + k + 1;denominator[k] = k + 1;}for (int p = 2; p <= r; p++){int pivot = denominator[p - 1];if (pivot > 1){int offset = (n - r) % p;for (int k = p - 1; k < r; k += p){numerator[k - offset] /= pivot;denominator[k] /= pivot;}}}long result = 1;for (int k = 0; k < r; k++) if (numerator[k] > 1) result = result * numerator[k] % M;return result;}}