Submission #1082212

#	Time	Username	Problem	Language	Result	Execution time	Memory
1082212		raphael_heuchl	Boxes with souvenirs (IOI15_boxes)	C++14	10 / 100	1 ms	604 KiB

boxes

#include "boxes.h"
#include <vector>
#include <algorithm>
#include <map>
#include <iostream>
#define INF 1'000'000'000'000'000'000
#define ABS(a) ((a) > 0 ? (a) : -(a))
#define MIN(a, b) ((a) < (b) ? (a) : (b))

std::vector<long long> people;
long long delivery(int N, int K, int L, int p[])
{
    people.resize(N+2);
    people[0] = 0;
    for (int i = 0; i < N; ++i)
        people[i+1] = p[i];
    people[N+1] = 0;
    
    long long best = INF;
    for (int i = 1; i <= K; ++i)
    {
        long long sum = 0;
        long long pos = i;
        sum += people[i];

        while (pos <= N)
        {
            sum += MIN(people[pos], L - people[pos]);
            sum += MIN(people[pos+1], L - people[pos+1]);
            if (pos == N)
                break;
            sum += (pos+K <= N ? people[pos+K] : L) - people[pos+1];
            pos += K;
        }

        best = MIN(best, sum);
    }

    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