Submission #975874

#	Time	Username	Problem	Language	Result	Execution time	Memory
975874		vjudge1	Watching (JOI13_watching)	C++17	0 / 100	1027 ms	344 KiB

watching

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

int main() {
    int N, P, Q;
    cin >> N >> P >> Q;

    vector<int> lanes(N);
    for (int i = 0; i < N; ++i) {
        cin >> lanes[i];
    }
    sort(lanes.begin(), lanes.end());

    int min_k = lanes[N - 1] - lanes[0] + 1;
    for (int k = 1; k <= lanes[N - 1] - lanes[0] + 1; ++k) {
        int used_P = 0; // Number of small detectors used
        int used_Q = 0; // Number of large detectors used
        int start = lanes[0];
        for (int i = 0; i < N; ++i) {
            if (lanes[i] > start + k - 1) {
                if (lanes[i] - start <= 2 * k - 1) {
                    used_P++;
                } else {
                    used_Q++;
                }
                start = lanes[i] + 1;
            }
        }
        if (used_P <= P && used_Q <= Q) {
            min_k = min(min_k, k);
        }
    }

    cout << min_k << endl;

    return 0;
}

• Subtask 1: 0 / 50
• Subtask 2: 0 / 50