Submission #1084932

#	Time	Username	Problem	Language	Result	Execution time	Memory
1084932		yeediot	Boxes with souvenirs (IOI15_boxes)	C++17	100 / 100	555 ms	330724 KiB

boxes

#include "boxes.h"
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
long long delivery(int n, int k, int l, int p[]){
    vector<int>pos;
    for(int i = 0; i < n; i++){
        pos.pb(p[i]);
    }
    long long ans = 8e18;
    if(k == n){
        ans = l;
    }
    vector<long long>ldp(n + 10), rdp(n + 10);
    for(int i = 1; i <= n; i++){
        ldp[i] = ldp[max(i - k, 0)] + pos[i - 1] * 2;
    }
    for(int i = n; i >= 1; i--){
        rdp[i] = rdp[min(i + k, n + 1)] + (l - pos[i - 1]) * 2;
    }
    for(int i = 0; i <= n; i++){
        ans = min(ans, ldp[i] + rdp[i + 1]);
        if(i + k + 1 < n + 10) ans = min(ans, ldp[i] + rdp[i + k + 1] + l);
    }
    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