# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
769874 | teokakabadze | Boxes with souvenirs (IOI15_boxes) | C++17 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
long long delivery(int N, int K, int L, int p[])
{
n = N, k = K;
for(i = 0; i < n; i++)
a[i] = p[i];
sort(a, a + n);
d.pb({0, -1});
for(i = 0; i < n; i++)
{
if(d.front().s == i - k - 1) d.pop_front();
dp[i] = 2 * a[i] + d.front().f;
while(d.size() && d.front().f >= dp[i]) d.pop_front();
d.pb({dp[i], i});
}
while(d.size()) d.pop_back();
d.pb({0, n});
for(i = n - 1; i >= 0; i--)
{
if(d.front().s == i + k + 1) d.pop_front();
dp1[i] = 2 * (L - a[i]) + d.front().f;
while(d.size() && d.front().f >= dp1[i]) d.pop_front();
d.pb({dp1[i], i});
}
ans = 1e18;
for(i = 0; i < n; i++)
ans = min(ans, dp[i] + dp1[(i + 1) % n]);
return ans;
}