A38 Black Company 1

問題へのリンク

C#のソース

using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static string InputPattern = "InputX";

    static List<string> GetInputList()
    {
        var WillReturn = new List<string>();

        if (InputPattern == "Input1") {
            WillReturn.Add("5 3");
            WillReturn.Add("1 2 22");
            WillReturn.Add("2 3 16");
            WillReturn.Add("3 5 23");
            //100
        }
        else {
            string wkStr;
            while ((wkStr = Console.ReadLine()) != null) WillReturn.Add(wkStr);
        }
        return WillReturn;
    }

    struct LRHInfoDef
    {
        internal int L;
        internal int R;
        internal int H;
    }
    static List<LRHInfoDef> mLRHInfoList = new List<LRHInfoDef>();

    static void Main()
    {
        List<string> InputList = GetInputList();

        int[] wkArr = { };
        Action<string> SplitAct = pStr =>
            wkArr = pStr.Split(' ').Select(pX => int.Parse(pX)).ToArray();

        SplitAct(InputList[0]);
        int D = wkArr[0];
        int UB = D;

        foreach (string EachStr in InputList.Skip(1)) {
            SplitAct(EachStr);
            LRHInfoDef WillAdd;
            WillAdd.L = wkArr[0];
            WillAdd.R = wkArr[1];
            WillAdd.H = wkArr[2];
            mLRHInfoList.Add(WillAdd);
        }

        int[] MaxHArr = new int[D + 1];
        for (int I = 1; I <= UB; I++) {
            MaxHArr[I] = 24;
        }

        foreach (LRHInfoDef EachLRHInfo in mLRHInfoList) {
            for (int I = EachLRHInfo.L; I <= EachLRHInfo.R; I++) {
                MaxHArr[I] = Math.Min(MaxHArr[I], EachLRHInfo.H);
            }
        }

        int Answer = 0;
        for (int I = 1; I <= UB; I++) {
            Answer += MaxHArr[I];
        }
        Console.WriteLine(Answer);
    }
}

解説

制約が緩いので、各日ごとに、何時間まで働けるかを配列に持ち
最後に集計してます。