Submission #952752

#	Time	Username	Problem	Language	Result	Execution time	Memory
952752		stakaman	Swimming competition (LMIO18_plaukimo_varzybos)	C++14	10 / 100	341 ms	11080 KiB

plaukimo_varzybos

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

bool canDivide(vector<int>& times, int maxDiff, int A, int B, int N) {
    int groups = 0, i = 0;
    while (i < N) {
        int start_time = times[i];
        int members = 0;
        while (i < N && members < B && times[i] - start_time <= maxDiff) {
            i++;
            members++;
        }
        if (members < A) return false; // Cannot form a valid group
        groups++;
    }
    return true;
}

int main() {
    int N, A, B;
    cin >> N >> A >> B;
    vector<int> times(N);
    for (int& time : times) cin >> time;
    sort(times.begin(), times.end());

    int low = 0, high = times.back() - times.front(), ans = high;
    while (low <= high) {
        int mid = low + (high - low) / 2;
        if (canDivide(times, mid, A, B, N)) {
            ans = mid;
            high = mid - 1;
        } else {
            low = mid + 1;
        }
    }

    cout << ans << endl;
    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 30
• Subtask 4: 0 / 40