Submission #1211611

#	Time	Username	Problem	Language	Result	Execution time	Memory
1211611		alwaus424	Global Warming (CEOI18_glo)	C++20	10 / 100	63 ms	1864 KiB

glo

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

int lis(vector<int> const& a) {
    int n = a.size();
    const int INF = 1e9;
    vector<int> d(n + 1, INF);
    d[0] = -INF;

    for (int i = 0; i < n; i++) {
        // Use lower_bound for non-decreasing LIS
        int l = upper_bound(d.begin(), d.end(), a[i]) - d.begin();
        if (d[l - 1] < a[i] && a[i] < d[l])
            d[l] = a[i];
    }

    int ans = 0;
    for (int l = 0; l <= n; l++) {
        if (d[l] < INF)
            ans = l;
    }
    return ans;
}

int main() {
    int n,x;
    cin >> n>>x;
    vector<int> v(n);
    for (int i = 0; i < n; i++) cin >> v[i];

    cout << lis(v) << endl;
    return 0;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 13
• Subtask 4: 10 / 10
• Subtask 5: 0 / 20
• Subtask 6: 0 / 17
• Subtask 7: 0 / 25