Submission #963518

#	Time	Username	Problem	Language	Result	Execution time	Memory
963518		Hugo1729	Boxes with souvenirs (IOI15_boxes)	C++11	100 / 100	811 ms	294140 KiB

boxes

#include <bits/stdc++.h>
#include "boxes.h"
using namespace std;
typedef long long ll;

ll delivery(int N, int K, int L, int p[]){
    sort(p,p+N);

    vector<ll> left(N+1,0),right(N+1,0);

    for(int i=0;i<N;i++){
        if(i<K){
            left[i+1]=min(p[i]*2,L);
        }else{
            left[i+1]=min(p[i]*2,L)+left[i+1-K];
        }
    }

    for(int i=0;i<N;i++)p[i]=L-p[i];
    sort(p,p+N);

    for(int i=0;i<N;i++){
        if(i<K){
            right[i+1]=min(p[i]*2,L);
        }else{
            right[i+1]=min(p[i]*2,L)+right[i+1-K];
        }
    }

    ll ans=LLONG_MAX;

    for(int i=0;i<N+1;i++)ans=min(ans,left[i]+right[N-i]);

    // for(int i=0;i<N+1;i++)cout << left[i] << ' ';
    // cout << '\n';
    // for(int i=0;i<N+1;i++)cout << right[i] << ' ';
    // cout << '\n';


    return ans;
}

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