結果
問題 | No.278 連続する整数の和(2) |
ユーザー |
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提出日時 | 2017-04-03 14:39:08 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 40 ms / 2,000 ms |
コード長 | 2,561 bytes |
コンパイル時間 | 3,708 ms |
コンパイル使用メモリ | 116,120 KB |
実行使用メモリ | 17,920 KB |
最終ジャッジ日時 | 2024-12-23 09:13:35 |
合計ジャッジ時間 | 2,418 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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ファイルパターン | 結果 |
---|---|
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 System.Linq;using System.Collections;using System.Collections.Generic;using System.IO;class Program{static void Main(){new Magatro().Solve();}}public class Scanner{private StreamReader Sr;private string[] S;private int Index;private const char Separator = ' ';public Scanner(Stream source){Index = 0;S = new string[0];Sr = new StreamReader(source);}private string[] Line(){return Sr.ReadLine().Split(Separator);}public string Next(){string result;if (Index >= S.Length){S = Line();Index = 0;}result = S[Index];Index++;return result;}public int NextInt(){return int.Parse(Next());}public double NextDouble(){return double.Parse(Next());}public long NextLong(){return long.Parse(Next());}public decimal NextDecimal(){return decimal.Parse(Next());}public string[] StringArray(int index){Next();Index = S.Length;return S.Skip(index).ToArray();}public string[] StringArray(){Next();Index = S.Length;return S.ToArray();}public int[] IntArray(int index){return StringArray(index).Select(int.Parse).ToArray();}public int[] IntArray(){return StringArray().Select(int.Parse).ToArray();}public long[] LongArray(int index){return StringArray(index).Select(long.Parse).ToArray();}public long[] LongArray(){return StringArray().Select(long.Parse).ToArray();}public bool EndOfStream{get { return Sr.EndOfStream; }}}public class Magatro{Scanner Cin = new Scanner(Console.OpenStandardInput());private long N;private void Scan(){N = Cin.NextLong();}public void Solve(){Scan();if (N % 2 == 0){Console.WriteLine(Sum(N / 2));}else{Console.WriteLine(Sum(N));}}public long Sum(long n){long ans = 0;for (long i = 1; i * i <= n; i++){if (n % i == 0){ans += i;if (n / i != i){ans += n / i;}}}return ans;}}