Submission #795133

#	Time	Username	Problem	Language	Result	Execution time	Memory
795133		Ronin13	Boxes with souvenirs (IOI15_boxes)	C++17	100 / 100	452 ms	293660 KiB

boxes

#include "boxes.h"
#include <bits/stdc++.h>
#define ll long long 
#define ull unsigned ll
#define f first
#define s second
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pb push_back
#define epb emplace_back
using namespace std;

long long delivery(int N, int K, int L, int p[]) {
    ll a[N], b[N];
    int n= N;
    for(int i = 0; i < n; i++){
        if(i < K) a[i] = p[i] + min(p[i], L - p[i]);
        else a[i] = a[i - K] + p[i] + min(p[i], L - p[i]);
    }
    for(int i = n - 1; i >= 0; i--){
        if(i + K < n) b[i] = b[i + K] + L - p[i] + min(p[i], L - p[i]);
        else b[i] = L - p[i] + min(p[i], L - p[i]);;
    }
    ll ans = min(a[n - 1], b[0]);
    for(int i = 0; i < n - 1; i++){
        ans = min(ans, a[i] + b[i + 1]);
    }
    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