| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1331676 | uranhishig | Boxes with souvenirs (IOI15_boxes) | C++20 | 1 ms | 344 KiB |
#include "boxes.h"
#include<bits/stdc++.h>
using namespace std;
// #define int long long
long long delivery(int n, int k, int l, int p[]) {
vector<long long> pre(n + 1, 0);
vector<long long> suf(n + 1, 0);
for (long long i = 0; i < n; i++) {
pre[i + 1] = 2 * p[i];
if(i + 1 > k){
pre[i + 1] += pre[i + 1 - k];
}
}
for (long long i = n - 1; i >= 0; i--) {
suf[i] = 2 * (l - p[i]);
if (i + k < n) {
suf[i] += suf[i + k];
}
}
long long ans = min(suf[0], pre[n]);
for (long long i = 0; i < n; i++) {
ans = min(ans, pre[i] + suf[i]);
}
return ans;
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