Submission #401783

#	Time	Username	Problem	Language	Result	Execution time	Memory
401783		iulia13	Boxes with souvenirs (IOI15_boxes)	C++14	0 / 100	1 ms	332 KiB

boxes

#include "boxes.h"
#include <iostream>
#include <algorithm>

using namespace std;
#define ll long long
const int N = 1e7;
ll dp1[N * 2];
ll dp2[N * 2];
ll delivery(int n, int k, int l, int p[]) {
    sort(p, p + n);
    ll ans = N * N;
    int i;
    for (i = 0; i < n; i++)
    {
        if (i < k)
            dp1[i] = 1ll * p[i] * 2;
        else
            dp1[i] = 1ll * p[i] * 2 + dp1[i - k];
    }
    for (i = n - 1; 0 <= i; i--)
    {
        if (n - i <= k)
            dp2[i] = 1ll * (l - p[i]) * 2;
        else
            dp2[i] = 1ll * (l - p[i]) * 2 + dp2[i + k];
    }
    for (i = 0; i < n; i++)
        ans = min(dp1[i] + dp2[i + k + 1] + l, ans);
    return ans;
}/*
int n, k, l;
int pp[N];
int main()
{
    cin >> n >> k >> l;
    for (int i = 0; i < n; i++)
        cin >> pp[i];
    cout << delivery(n, k, l, pp);
    return 0;
}*/

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:12:16: warning: integer overflow in expression of type 'int' results in '276447232' [-Woverflow]
   12 |     ll ans = N * N;
      |              ~~^~~

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