이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include "boxes.h"
#include<bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(int i = a; i<int(b);++i)
#define all(v) v.begin(),v.end()
#define sz(v) v.size()
#define trav(a,c) for(auto a: c)
typedef long long ll;
typedef vector<ll> vi;
typedef pair<ll,ll> pii;
ll ceilDiv(ll a,ll b){
return a/b+(a%b!=0);
}
long long delivery(int N, int K, int L, int p[]) {
ll n = N;
ll k = K;
ll l = L;
vi left;
vi right;
rep(i,0,n){
if(p[i]<=l/2) left.push_back(p[i]);
else right.push_back(l-p[i]);
}
sort(all(left));
sort(all(right));
vi costLeft(left.size()+1);
rep(i,0,left.size()){
if(i<k) costLeft[i+1] = left[i]*2;
else costLeft[i+1] = left[i]*2 + costLeft[i-k+1];
}
vi costRight(right.size()+1);
rep(i,0,right.size()){
if(i<k) costRight[i+1] = right[i]*2;
else costRight[i+1] = right[i]*2 + costRight[i-k+1];
}
vector<vi> costRight2(k);
rep(i,0,costRight.size()){
costRight2[i%k].push_back(costRight[i]);
}
ll best = 1e18;
rep(i,0,costLeft.size()){
ll jCon = (n-i)%k;
costRight2[jCon];
ll constant = costLeft[i];
rep(w,0,costRight2[jCon].size()){
ll j = jCon + w*k;
ll curr = costRight[j];
curr += (n-i-j)/k*l;
best = min(best,curr + constant);
}
}
//cout<<best<<endl;
return best;
}
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