Submission #1166727

#	Time	Username	Problem	Language	Result	Execution time	Memory
1166727		tamyte	Rabbit Carrot (LMIO19_triusis)	C++20	100 / 100	18 ms	3592 KiB

triusis

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



int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
//    #ifndef ONLINE_JUDGE
//    ifstream cin("input.txt");
//    #endif // ONLINE_JUDGE
    int N, M;

    cin >> N >> M;
    vector<int> a(N);
    for (int i = 0; i < N; ++i) {
        cin >> a[i];
    }
    // aj <= ai + j * M - i * M
    // - aj + j * M >= - ai + i * M
    vector<int> b;
    for (int i = 0; i < N; ++i) {
        if ((i + 1) * M >= a[i]) {
            b.push_back(-a[i] + i * M);
        }
    }
    vector<int> dp;
    for (auto& i : b) {
        int id = upper_bound(begin(dp), end(dp), i) - begin(dp);
        if (id == dp.size()) dp.push_back(i);
        else dp[id] = i;
    }
    cout << N - dp.size() << endl;
}

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