제출 #31207

#제출 시각아이디문제언어결과실행 시간메모리
31207top34051선물상자 (IOI15_boxes)C++14
10 / 100
2 ms376 KiB
#include "boxes.h"
#include<bits/stdc++.h>
using namespace std;
#define maxn 1005

long long L[maxn], R[maxn];

long long delivery(int N, int K, int len, int p[]) {
    int i;
    long long ans;
    for(i=0;i<N;i++)  L[i] = ((i-K>=0) ? L[i-K] : 0LL) + p[i]*2;
    for(i=N-1;i>=0;i--) R[i] = ((i+K<N) ? R[i+K] : 0LL) + (len-p[i])*2;
    ans = (long long)2e18;
    for(i=0;i<N;i++) ans = min(ans,L[i]+R[i+1]);
    for(i=0;i<N;i++) ans = min(ans,L[i]+R[i+K]+len);
    return ans;
}
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