제출 #602577

#제출 시각아이디문제언어결과실행 시간메모리
602577daisy2선물상자 (IOI15_boxes)C++14
0 / 100
1 ms340 KiB
#include<iostream>
#include "boxes.h"
using namespace std;
#define MAX 100000000000000000
long long maone[10000005],maoneri[10000005],maonele[10000005];
long long delivery(int N, int k, int L, int p[]) {

    long long ans=MAX;

    for(int i=1;i<=N;i++)
        maonele[i]=maonele[max(0,i-k)]+2*p[i-1];

    for(int i=N;i>=1;i--){
        maoneri[i]=maoneri[min(N+1,i+k)]+2*(L-p[i-1]);
    }
    for(int i=1;i<=N;i++)
    {
        maone[i]=min(maonele[i],maoneri[i]);
        ans=min(ans,maonele[i-1]+maoneri[i]);
    }

    for(int i=1;i<=N;i++)
    {
        ans=min(ans,maone[max(0,i-k)]+maone[i+1]+2*L);
    }

    return ans;
}
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