Submission #743714

#	Time	Username	Problem	Language	Result	Execution time	Memory
743714		moonpay	Rabbit Carrot (LMIO19_triusis)	C++17	100 / 100	28 ms	8400 KiB

triusis

#include <bits/stdc++.h>

#define int int64_t
using namespace std;
const int modm = 1e9 + 7;
const int maxn = 2e3 + 5;


int lis(vector<int> &a) {
    vector<int> dp;
    for (int i: a) {
        int pos = upper_bound(dp.begin(), dp.end(), i) - dp.begin();
        if (pos == dp.size()) {
            dp.push_back(i);
        } else {
            dp[pos] = i;
        }
    }
    return dp.size();
}


int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n, m;
    cin >> n >> m;
    vector<int> a(n + 1);
    a[0] = -m * n;
    for (int i = 0; i < n; i++) {
        cin >> a[i + 1];
        a[i + 1] += (n - i - 1) * m;
        a[i + 1] *= -1;
    }
    vector<int> ne;
    for (auto p: a) {
        if (p >= a[0]) {
            ne.push_back(p);
        }
    }
    cout << n + 1 - lis(ne);

}

Compilation message (stderr)

triusis.cpp: In function 'int64_t lis(std::vector<long int>&)':
triusis.cpp:13:17: warning: comparison of integer expressions of different signedness: 'int64_t' {aka 'long int'} and 'std::vector<long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |         if (pos == dp.size()) {
      |             ~~~~^~~~~~~~~~~~

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