Submission #528894

#	Time	Username	Problem	Language	Result	Execution time	Memory
528894		DragosC1	Rabbit Carrot (LMIO19_triusis)	C++17	100 / 100	27 ms	3700 KiB

triusis

#include <iostream>
using namespace std;

#define fast ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);

int a[200001], lung;
int b[200001], l;

int main() {
    fast
    int i, n, m, x, st, dr, mij;
    cin >> n >> m;
    for (i = 1; i <= n; i++) {
        cin >> x;
        if (x <= i * m)
            a[++lung] = i * m - x;
    }
    for (i = 1; i <= lung; i++)
        if (l == 0 || a[i] >= b[l])
            b[++l] = a[i];
        else {
            st = 1, dr = l;
            while (st <= dr) {
                mij = (st + dr) / 2;
                if (b[mij] > a[i])
                    dr = mij - 1;
                else st = mij + 1;
            }
            b[st] = a[i];
        }
    cout << n - l;
    return 0;
}

• Subtask 1: 14 / 14
• Subtask 2: 21 / 21
• Subtask 3: 28 / 28
• Subtask 4: 37 / 37