結果
問題 | No.573 a^2[i] = a[i] |
ユーザー | claw88 |
提出日時 | 2017-10-06 22:44:23 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 94 ms / 2,000 ms |
コード長 | 2,678 bytes |
コンパイル時間 | 946 ms |
コンパイル使用メモリ | 114,280 KB |
実行使用メモリ | 18,688 KB |
最終ジャッジ日時 | 2024-11-17 01:49:20 |
合計ジャッジ時間 | 3,094 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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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 | 21 ms
17,792 KB |
testcase_01 | AC | 20 ms
17,920 KB |
testcase_02 | AC | 20 ms
17,792 KB |
testcase_03 | AC | 21 ms
17,792 KB |
testcase_04 | AC | 20 ms
17,792 KB |
testcase_05 | AC | 20 ms
17,792 KB |
testcase_06 | AC | 20 ms
17,536 KB |
testcase_07 | AC | 22 ms
17,664 KB |
testcase_08 | AC | 21 ms
17,664 KB |
testcase_09 | AC | 21 ms
17,920 KB |
testcase_10 | AC | 21 ms
17,664 KB |
testcase_11 | AC | 22 ms
17,792 KB |
testcase_12 | AC | 21 ms
17,664 KB |
testcase_13 | AC | 21 ms
17,792 KB |
testcase_14 | AC | 20 ms
17,792 KB |
testcase_15 | AC | 21 ms
17,664 KB |
testcase_16 | AC | 20 ms
17,920 KB |
testcase_17 | AC | 22 ms
17,920 KB |
testcase_18 | AC | 21 ms
17,536 KB |
testcase_19 | AC | 21 ms
17,792 KB |
testcase_20 | AC | 22 ms
17,920 KB |
testcase_21 | AC | 22 ms
17,664 KB |
testcase_22 | AC | 22 ms
17,536 KB |
testcase_23 | AC | 22 ms
17,792 KB |
testcase_24 | AC | 21 ms
17,792 KB |
testcase_25 | AC | 22 ms
17,664 KB |
testcase_26 | AC | 22 ms
17,664 KB |
testcase_27 | AC | 22 ms
17,792 KB |
testcase_28 | AC | 21 ms
17,920 KB |
testcase_29 | AC | 21 ms
17,792 KB |
testcase_30 | AC | 21 ms
17,792 KB |
testcase_31 | AC | 21 ms
17,920 KB |
testcase_32 | AC | 22 ms
17,792 KB |
testcase_33 | AC | 22 ms
17,792 KB |
testcase_34 | AC | 22 ms
17,536 KB |
testcase_35 | AC | 23 ms
17,792 KB |
testcase_36 | AC | 22 ms
17,664 KB |
testcase_37 | AC | 22 ms
17,664 KB |
testcase_38 | AC | 23 ms
17,664 KB |
testcase_39 | AC | 24 ms
17,664 KB |
testcase_40 | AC | 23 ms
17,920 KB |
testcase_41 | AC | 23 ms
17,792 KB |
testcase_42 | AC | 25 ms
17,664 KB |
testcase_43 | AC | 25 ms
17,536 KB |
testcase_44 | AC | 26 ms
17,920 KB |
testcase_45 | AC | 28 ms
17,884 KB |
testcase_46 | AC | 94 ms
18,688 KB |
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 static System.Console; using Pair = System.Collections.Generic.KeyValuePair<int, int>; //using System.Numerics; //using static System.Math; class Program { static void Main() { //SetOut(new StreamWriter(OpenStandardOutput()) { AutoFlush = false }); new Program().solve(); Out.Flush(); } Scanner cin = new Scanner(); readonly int[] dd = { 0, 1, 0, -1, 0 }; readonly int mod = 1000000007; readonly string alfa = "abcdefghijklmnopqrstuvwxyz"; readonly string ALFA = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; int N; void solve() { N = cin.nextint; A = new long[N + 1]; B = new long[N + 1]; table(N); long sum = 0; for (int i = 0; i <= N; i++) { sum += combi(N, i) * powmod(N - i, i, mod) % mod; sum %= mod; //WriteLine(sum); } WriteLine(sum); } long[] A, B; //a^b(mod p) solution works in O(logb). long powmod(long a, long b, long p) { if (b == 0) return 1; if (b % 2 == 0) { long d = powmod(a, b / 2, p); return d * d % p; } else { return a * powmod(a, b - 1, p) % p; } } void table(int n) { A[0] = 1; for (int i = 0; i < n; i++) { A[i + 1] = A[i] * (i + 1) % mod; } B[n] = powmod(A[n], mod - 2, mod); for (int i = 0; i < n; i++) { B[n - i - 1] = B[n - i] * (n - i) % mod; } } long combi(int n, int r) { return A[n] * B[r] % mod * B[n - r] % mod; } } class Scanner { string[] s; int i; char[] cs = new char[] { ' ' }; public Scanner() { s = new string[0]; i = 0; } public string[] scan { get { return ReadLine().Split(); } } public int[] scanint { get { return Array.ConvertAll(scan, int.Parse); } } public long[] scanlong { get { return Array.ConvertAll(scan, long.Parse); } } public double[] scandouble { get { return Array.ConvertAll(scan, double.Parse); } } public string next { get { if (i < s.Length) return s[i++]; string st = ReadLine(); while (st == "") st = ReadLine(); s = st.Split(cs, StringSplitOptions.RemoveEmptyEntries); i = 0; return next; } } public int nextint { get { return int.Parse(next); } } public long nextlong { get { return long.Parse(next); } } public double nextdouble { get { return double.Parse(next); } } }