제출 #1120359

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1120359		epicci23	선물상자 (IOI15_boxes)	C++17	10 / 100	1 ms	504 KiB

boxes

#include "bits/stdc++.h"
#include "boxes.h"
using namespace std;
#define ll long long
#define all(x) x.begin() , x.end()
#define sz(x) (ll)x.size()

const ll INF = 1e18 + 5;

ll delivery(int N, int K, int L, int p[]){
  ll n = N, k = K , l = L;
  ll ar[n + 5], pre[n + 5], suf[n + 5];
  ar[0] = 0;
  vector<ll> v;
  for(ll i = 1 ; i <= n ; i++) v.push_back(p[i-1]);
  reverse(all(v));
  while(!v.empty() && v.back() == 0) v.pop_back();
  reverse(all(v));
  
  n = sz(v);
  if(n == 0) return 0;

  for(ll i = 1 ; i <= n ; i++) ar[i] = v[i - 1];

  pre[0] = suf[n + 1] = 0;
  for(ll i = 1 ; i <= n ; i++) pre[i] = ar[i] * 2 + pre[max(0LL , i - k)];
  for(ll i = n ; i >= 1; i--) suf[i] = 2 * (l - ar[i]) + suf[min(n + 1 , i + k)];

  ll ans = INF; 
  for(ll i = 0; i <= n ; i++) ans = min(ans, pre[i] + suf[i+1]);

  return ans;
}


/*void _(){
  ll n,k,l;
  cin >> n >> k >> l;
  ll ar[n + 5], pre[n + 5], suf[n + 5];
  for(ll i = 1 ; i <= n ; i++) cin >> ar[i];
  pre[0] = suf[n + 1] = 0;
  for(ll i = 1 ; i <= n ; i++) pre[i] = ar[i] * 2 + pre[max(0LL , i - k)];
  for(ll i = n ; i >= 1; i--) suf[i] = 2 * (l - ar[i]) + suf[min(n + 1 , i + k)];

  ll ans = INF; 

  for(ll i = 0; i <= n ; i++) ans = min(ans, pre[i] + suf[i+1]);
  
  cout << ans << '\n';
}

int32_t main(){
 ios::sync_with_stdio(0);cin.tie(0);
 ll tc = 1;//cin >> tc;
 while(tc--) _();
}*/

• Subtask 1: 10 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30