Submission #674285

#	Time	Username	Problem	Language	Result	Execution time	Memory
674285		thienbao1602	Job Scheduling (CEOI12_jobs)	C++17	40 / 100	388 ms	45512 KiB

jobs

#include    <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define pb push_back
#define vi vector<ll>
using namespace std;

const int N = 1e5 + 55;

int days, delay, number_jobs;
vector<pair<ll, ll>> jobs;

pair<bool, vector<vi>> check(const vector<pair<ll, ll>> &jobs, ll machine)
{
    vector<vi> schedule(days);
    ll id_job = 0;
    for(int i=1; i<=days; i++)
    {
        for(int cur_machine=0; cur_machine<machine; cur_machine++)
        {
            if (jobs[id_job].fi > i) break;

            if (jobs[id_job].fi + delay >= i)
            {
                schedule[i - 1].pb(jobs[id_job++].se);
            } else return make_pair(false, schedule);

            if (id_job == number_jobs) return make_pair(true, schedule);
        }
    }
    return make_pair(false, schedule);
}

void solve()
{
    cin >> days >> delay >> number_jobs;
    vector<pair<ll, ll>> jobs(number_jobs);
    for(int i=0; i<number_jobs; i++)
    {
        ll x;
        cin >> x;
        jobs[i] = make_pair(x, i + 1);
    }

    sort(jobs.begin(), jobs.end());

    vector<vi> ans;
    ll l = 1, r = days;
    while(l < r)
    {
        ll m = (l + r) >> 1;
        pair<bool, vector<vi>> curResult = check(jobs, m);
        if (curResult.fi)
        {
            r = m;
            ans = curResult.se;
        } else
        {
            l = m + 1;
        }
    }

    cout << l << "\n";
    for(int i=0; i<days; i++)
    {
        for(ll &idx : ans[i])
        {
            cout << idx << " ";
        }
        cout << 0 << "\n";
    }
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    solve();
    return 0;
}

• Subtask 1: 40 / 100