Submission #382265

#	Time	Username	Problem	Language	Result	Execution time	Memory
382265		rocks03	Boxes with souvenirs (IOI15_boxes)	C++14	10 / 100	2 ms	384 KiB

boxes

#include "boxes.h"
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define ff first
#define ss second
#define pb push_back
#define SZ(x) ((int)(x).size())
#define all(x) x.begin(), x.end()
#define debug(x) cout << #x << ": " << x << " "
#define nl cout << "\n"
#define rep(i, a, b) for(int i = (a); i < (b); i++)
#define per(i, a, b) for(int i = (a); i >= (b); i--)
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

long long delivery(int N, int K, int L, int a[]) {
    vector<ll> pr(N + 1);
    rep(i, 0, N){
        int j = i;
        while(j >= 0){
            pr[i] += 2 * a[j];
            j -= K;
        }
    }
    vector<ll> su(N + 1);
    per(i, N - 1, 0){
        int j = i;
        while(j < N){
            su[i] += 2 * (L - a[j]);
            j += K;
        }
    }
    ll best = min(su[0], pr[N - 1]);
    rep(i, 1, N){
        best = min(best, pr[i - 1] + su[i]);
    }
    return best;
}

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