Submission #444906

#	Time	Username	Problem	Language	Result	Execution time	Memory
444906		Khizri	선물상자 (IOI15_boxes)	C++17	100 / 100	805 ms	197008 KiB

boxes

#include "boxes.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back		 
#define F first																 
#define S second 															 
#define INF 1e18
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define pii pair<int,int>
#define pll pair<ll,ll>
#define OK cout<<"Ok"<<endl;
#define MOD (ll)(1e9+7)
#define endl "\n"
const int mxn=1e7+5;
ll l[mxn],r[mxn];
long long delivery(int n, int k, int dis, int arr[]) {
    ll ans=INF;
    sort(arr,arr+n);
    for(int i=0;i<n;i++){
    	if(i<k){
    		l[i]=min(1ll*dis,arr[i]*2ll);
		}
		else{
			l[i]=l[i-k]+min(1ll*dis,arr[i]*2ll);
		}
	}
	ll say=0,ind=0;
    for(int i=n-1;i>=0;i--){
    	if(say<k){
    		r[i]=min(1ll*dis,(dis-arr[i])*2ll);
		}
		else{
			r[i]=r[i+k]+min(1ll*dis,(dis-arr[i])*2ll);
		}
		say++;
	}
	ans=min(r[0],l[n-1]);
	r[n]=0;
    for(int i=0;i<n-1;i++){
    	ans=min(l[i]+r[i+1],ans);
	}
	return ans;
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:29:11: warning: unused variable 'ind' [-Wunused-variable]
   29 |  ll say=0,ind=0;
      |           ^~~

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