Submission #540518

#	Time	Username	Problem	Language	Result	Execution time	Memory
540518		phathnv	Rabbit Carrot (LMIO19_triusis)	C++11	100 / 100	39 ms	3816 KiB

triusis

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


int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, m;
    cin >> n >> m;
    vector<int> a(n + 1, 0);
    for (int i = 1; i <= n; ++i) {
        cin >> a[i];
        a[i] -= i * m;
    }
    reverse(a.begin(), a.end());
    int res = 0;
    vector<int> f(a.size() + 1, 1e9);
    f[0] = -1e9;
    for (int x : a) {
        res = upper_bound(f.begin(), f.end(), x) - f.begin();
        f[res] = x;
    }
    cout << n - (res - 1) << '\n';
    return 0;
}

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