Submission #1269690

#	Time	Username	Problem	Language	Result	Execution time	Memory
1269690		jqi	Rabbit Carrot (LMIO19_triusis)	C++20	100 / 100	68 ms	4936 KiB

triusis

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
#define int long long

int32_t main() {
    int n, m;
    cin >> n >> m;
    int poles[n+1];
    poles[0] = 0;
    for (int i=1; i<=n; i++) {
        cin >> poles[i];
        poles[i] -= i*m;
    }
    vector<int> ldsn(n+1), endwithlen(n+1, -9223372036854775807);
    endwithlen[0] = 0;
    int ans = 0;
    for (int i=1; i<=n; i++) {
        int firstbad = upper_bound(endwithlen.begin(), endwithlen.end(), poles[i], greater<int>()) - endwithlen.begin();
        ldsn[i] = firstbad;
        if (firstbad == 0) continue;
        endwithlen[firstbad] = max(endwithlen[firstbad], poles[i]);
        ans = max(ans, firstbad);
    }
    cout << n-ans;
}

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