제출 #1055227

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1055227		Mokocraft	Safety (NOI18_safety)	C++14	0 / 100	37 ms	3744 KiB

safety

#include <iostream>
#include <stdio.h>
#include <array>
#include <algorithm>
#include <cmath>
#include <queue>
/*
void showq(std::priority_queue<int> qL, std::priority_queue<int, std::vector<int>, std::greater<int>> qR)
{
    while(!qL.empty())
    {
        std::cout << qL.top() << ' ';
        qL.pop();
    }
    while(!qR.empty())
    {
        std::cout << ' ' << qR.top();
        qR.pop();
    }
    std::cout << std::endl;
    return;
}
*/
int main()
{
    //freopen("duotaB.txt", "r", stdin);

    int n, h;
    std::cin >> n >> h;

    int arr[n];
    for(int i = 0; i < n; i++)
        std::cin >> arr[i];

    std::priority_queue<int> qL;
    std::priority_queue<int, std::vector<int>, std::greater<int>> qR;

    int min = 0;
    qL.emplace(arr[0]);
    qR.emplace(arr[0]);

    //showq(qL, qR);

    for(int i = 1; i < n; i++)
    {
        if(arr[i] + h*i < qL.top())
        {
            qL.emplace(arr[i] + h*i);
            qL.emplace(arr[i] + h*i);
            min += qL.top() - arr[i] - i*h;
            qR.emplace(qL.top() - 2*i*h);
            qL.pop();
        }
        else if(arr[i] - h*i > qR.top())
        {
            qR.emplace(arr[i] - h*i);
            qR.emplace(arr[i] - h*i);
            min +=  arr[i] - i*h - qR.top();
            qL.emplace(qL.top() + 2*i*h);
            qR.pop();
        }
        else
        {
            qL.emplace(arr[i] + i*h);
            qR.emplace(arr[i] - i*h);
        }
         

        //showq(qL, qR);
    }

    std::cout << min;

    return 0;
}

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