Submission #716082

#	Time	Username	Problem	Language	Result	Execution time	Memory
716082		SnowRaven52	Job Scheduling (CEOI12_jobs)	C++17	0 / 100	3 ms	600 KiB

jobs

// Source: https://usaco.guide/general/io

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

int main() {
    freopen("input.in", "r", stdin);
    cin.tie(0)->sync_with_stdio(false);

    int n, d, m;
    cin >> n >> d >> m;
    vector<pair<int, int>> t(m);
    for (int i = 0; i < m; i++) {
        cin >> t[i].first;
        t[i].second = i + 1;
    }
    sort(t.begin(), t.end());
    vector<vector<int>> res;
    int l = 0, r = m;
    while (l + 1 < r) {
        int mid = l + (r - l) / 2;
        vector<vector<int>> cur(n + 1);
        vector<int> q;
        for (int i = 0; i < mid; i++) {
            q.push_back(0);
        }
        bool works = true;
        for (int i = 0; i < m; i++) {
            if (q[0] - d <= t[i].first) {
                int jt = max(q[0], t[i].first);
                q.push_back(jt + 1);
                cur[jt].push_back(t[i].second);
                q.erase(q.begin());
            } else {
                works = false;
                break;
            }
        }
        if (works) {
            r = mid;
            res = cur;
        } else {
            l = mid;
        }
    }
    cout << r << endl;
    for (int i = 1; i <= n; i++) {
        for (int x : res[i]) {
            cout << x << " ";
        }
        cout << 0 << endl;
    }
}

Compilation message (stderr)

jobs.cpp: In function 'int main()':
jobs.cpp:7:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |     freopen("input.in", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 100