Submission #1296671

#	Time	Username	Problem	Language	Result	Execution time	Memory
1296671		kawhiet	Bouquet (EGOI24_bouquet)	C++20	70 / 100	88 ms	2788 KiB

Main

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

#ifdef LOCAL
#include "debug.h"
#else
#define dbg(...) 42
#endif

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int n;
    cin >> n;

    vector<int> l(n), r(n);
    int mx = 0;
    for (int i = 0; i < n; i++) {
        int x, y;
        cin >> x >> y;
        mx = max(mx, x);
        mx = max(mx, y);
        l[i] = max(i - x, 0);
        r[i] = min(i + y, n - 1);
    }

    vector<int> dp(n, 1);
    for (int i = 0; i < n; i++) {
        int N = n;
        if (mx <= 2) {
            N = min(N, r[i] + 100);
        }
        for (int j = r[i] + 1; j < N; j++) {
            if (i < l[j]) {
                dp[j] = max(dp[j], dp[i] + 1);
                if (n > 2000 && mx > 2) {
                    break;
                }
            }
        }
    }

    cout << *max_element(dp.begin(), dp.end()) << '\n';

    return 0;
}

• Subtask 1: 8 / 8
• Subtask 2: 16 / 16
• Subtask 3: 28 / 28
• Subtask 4: 18 / 18
• Subtask 5: 0 / 30