結果
問題 | No.2043 Ohuton and Makura |
ユーザー |
|
提出日時 | 2022-08-19 22:07:54 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 38 ms / 2,000 ms |
コード長 | 2,431 bytes |
コンパイル時間 | 1,520 ms |
コンパイル使用メモリ | 108,800 KB |
実行使用メモリ | 18,816 KB |
最終ジャッジ日時 | 2024-10-08 08:51:47 |
合計ジャッジ時間 | 2,354 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 18 |
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 static System.Console;using System.Linq;using System.Collections.Generic;class Program{static int NN => int.Parse(ReadLine());static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();static int[][] NArr(int n) => Enumerable.Repeat(0, n).Select(_ => NList).ToArray();static void Main(){var c = NList;var (w, h, s) = (c[0], c[1], c[2]);var res = 0L;for (var x = 1; x <= w; ++x){var ymax = Math.Min(h, s / x);if (ymax == 0) continue;var xcnt = w - x + 1;var ymincnt = h;var ymaxcnt = h - ymax + 1;res += (long)xcnt * ((long)(ymaxcnt + ymincnt) * (ymincnt - ymaxcnt + 1) / 2);}WriteLine(res);}class NCR{int[] facts;int[] revFacts;int mod;public NCR(int n, int mod){facts = new int[n + 1];revFacts = new int[n + 1];this.mod = mod;facts[0] = 1;var tmp = 1L;for (var i = 1; i <= n; ++i){tmp = (tmp * i) % mod;facts[i] = (int)tmp;}tmp = Exp(facts[n], mod - 2);revFacts[n] = (int)tmp;for (var i = n; i > 1; --i){tmp = (tmp * i) % mod;revFacts[i - 1] = (int)tmp;}revFacts[0] = 1;}long Exp(long n, long k){n = n % mod;if (k == 0) return 1;if (k == 1) return n;var half = Exp(n, k / 2);var result = (half * half) % mod;return ((k % 2) == 0) ? result : ((result * n) % mod);}public int Calc(int n, int r){if (r == 0 || r == n) return 1;if (r == 1) return n;return (int)(((long)facts[n] * revFacts[r] % mod) * revFacts[n - r] % mod);}public int Calc2(int n, int r){var tmp = 1L;for (var i = 0; i < r; ++i){tmp = tmp * (n - i) % mod;}return (int)(tmp * revFacts[r] % mod);}public int Fact(int n){return facts[n];}}}