| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1127717 | mariza | 선물상자 (IOI15_boxes) | C++20 | 431 ms | 196236 KiB |
#include "boxes.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll INF=1e18;
long long delivery(int N, int K, int L, int p[]) {
ll n=N, k=K, l=L;
ll pref[n];
for(ll i=0; i<k; i++){
pref[i]=p[i]+min((ll)p[i],l-p[i]);
}
for(ll i=k; i<n; i++){
pref[i]=pref[i-k]+p[i]+min((ll)p[i],l-p[i]);
}
ll suf[n];
for(ll i=n-1; i>=n-k; i--){
suf[i]=l-p[i]+min((ll)p[i],l-p[i]);
}
for(ll i=n-k-1; i>=0; i--){
suf[i]=suf[i+k]+l-p[i]+min((ll)p[i],l-p[i]);
}
ll ans=min(suf[0],pref[n-1]);
for(ll i=1; i<n; i++){
ans=min(ans,pref[i-1]+suf[i]);
}
return ans;
}
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