TopCoder SRM 153 DIV 1 Easy 練習

問題

問題長すぎだろ・・・ｊｋ・・・

解

問題読めれば問題はない。

using System;
using System.Text;
using System.Text.RegularExpressions;
using System.Collections;
using System.Collections.Generic;

public class Inventory {
    public int monthlyOrder(int[] sales, int[] daysAvailable) {
        double exp = 0.0;
        int mths = sales.Length;
        for (int i = 0; i < sales.Length; ++i)
            if (daysAvailable[i] != 0)
                exp += sales[i] * 30.0 / daysAvailable[i];
            else
                --mths;
        if (Math.Abs(exp / mths - (int)exp / mths) < 1e-9)
            return (int)exp / mths;
        return (int)Math.Ceiling(exp / mths);
    }
}