Submission #694197

#	Time	Username	Problem	Language	Result	Execution time	Memory
694197		vjudge1	Job Scheduling (CEOI12_jobs)	C++17	30 / 100	204 ms	20172 KiB

jobs

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define all(s) s.begin(), s.end()
#ifndef LOCALDEBUG
#define LOCALDEBUG false
#endif
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> pii;

struct request
{
    int day, id;
    bool operator<(const request &a)
    {
        return day < a.day;
    }
};

int n, d, m;
request jobs[(int)1e6 + 1];

bool check(int machines)
{
    int nxt = 0;
    for (int i = 1; i <= n; i++)
    {
        int mm = machines;
        while (nxt < m && mm--)
        {
            request cur = jobs[nxt];
            if (cur.day > i)
                break;
            if (cur.day + d < i)
                return false;
            else
                nxt++;
        }
    }

    return nxt == m;
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    cin >> n >> d >> m;
    for (int i = 0; i < m; i++)
    {
        cin >> jobs[i].day;
        jobs[i].id = i;
    }
    sort(jobs, jobs + m);

    int lo = 1, hi = m;
    while (lo < hi)
    {
        int mid = (lo + hi) / 2;
        if (check(mid))
            hi = mid - 1;
        else
            lo = mid + 1;
    }

    cout << lo << '\n';

    vvi onDay(n + 1);

    int nxt = 0;
    for (int i = 1; i <= n; i++)
    {
        int mm = lo;
        while (nxt < m && mm--)
            onDay[i].pb(jobs[nxt++].id);
    }

    for (int i = 0; i < n; i++)
    {
        for (int id : onDay[i + 1])
            cout << id + 1 << " ";
        cout << "0\n";
    }
}

• Subtask 1: 30 / 100