Submission #1019921

#	Time	Username	Problem	Language	Result	Execution time	Memory
1019921		thinknoexit	Rabbit Carrot (LMIO19_triusis)	C++17	100 / 100	22 ms	3928 KiB

triusis

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int a[200200];
int dp[200200];
int main() {
    cin.tie(nullptr)->sync_with_stdio(false);
    int n, m;
    cin >> n >> m;
    for (int i = 1;i <= n;i++) {
        cin >> a[i];
        a[i] = i * m - a[i];
    }
    a[n + 1] = (n + 1) * m;
    int ans = 0, sz = 0;
    for (int i = 0;i <= n + 1;i++) {
        int idx = upper_bound(dp, dp + sz, a[i]) - dp;
        if (idx != 0) dp[idx] = a[i];
        if (idx == sz) sz++;
        ans = idx + 1;
    }
    cout << n - (ans - 2);
    return 0;
}

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