Submission #742793

#	Time	Username	Problem	Language	Result	Execution time	Memory
742793		Abrar_Al_Samit	Boxes with souvenirs (IOI15_boxes)	C++17	10 / 100	1 ms	316 KiB

boxes

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

const int nax = 1e7 + 3;
const long long INF = 1e18;

long long other_wing[nax];
int n, k, L;
long long ans = INF;

long long delivery(int N, int K, int l, int p[]) {
    n = N, k = K, L = l;

    int cur = 0;
    int cnt = k;
    long long _time = p[0];

    while(cur<n) {
        --cnt;
        other_wing[cur] = _time;

        if(cur+1<n) {
            if(cnt==0) {
                _time += p[cur] * 2;
                cnt = k;
            }
            _time += p[cur+1] - p[cur];
        }
        ++cur;
    }
    ans = min(ans, _time+min(p[n-1], L-p[n-1]));

    cur = n-1;
    cnt = k;
    _time = L-p[n-1];
    while(cur>=0) {
        --cnt;

        if(cur==0) {
            ans = min(ans, _time+min(p[0], L-p[0]));
        }
        if(cnt==0 && cur) {
            ans = min(ans, _time + min(p[cur], L-p[cur]) + other_wing[cur-1] + 
                min(p[cur-1], L-p[cur-1]));
        }
        if(cur-1>=0) {
            if(cnt==0) {
                _time += 2 * min(p[cur], L-p[cur]);
                cnt = k;
            }
            _time += p[cur] - p[cur-1];
        }
        --cur;
    }
    return ans;
}

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