Submission #890291

#	Time	Username	Problem	Language	Result	Execution time	Memory
890291		toastifishi	Rabbit Carrot (LMIO19_triusis)	C++14	100 / 100	22 ms	5084 KiB

triusis

#include <bits/stdc++.h>
using namespace std;
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);

    int n, m; 
    cin >> n >> m;
    vector <int> a(n + 1), b(n + 1);
    
    for(int i = 1; i <= n; i++) {
        cin >> a[i];
        b[i] = m * i - a[i];
    }
    vector <int> lis;
    for(int i = 1; i <= n; i++) {
        if(b[i] < 0) continue;
        if(lis.empty() || lis.back() <= b[i]) lis.push_back(b[i]);
        else {
            int ii = upper_bound(lis.begin(), lis.end(), b[i]) - lis.begin();
            lis[ii] = b[i];
        }
    }
    cout << n - (int)lis.size() << "\n"; 
    return 0;
}

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