Submission #649509

#	Time	Username	Problem	Language	Result	Execution time	Memory
649509		ShirleyM	Job Scheduling (CEOI12_jobs)	C++14	0 / 100	1095 ms	65536 KiB

jobs

#include <bits/stdc++.h>
using namespace std;
#define int int64_t
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int,int> ii;
typedef vector<ii> vii;
typedef vector<vii> vvii;
typedef vector<bool> vb;
typedef vector<vb> vvb;
#define x first
#define y second
#define pb push_back
#define loop(i,s,e) for(int i=s;i<e;i++)
#define loopr(i,s,e) for(int i=e-1; i>=s;i--)
#define chkmax(a,b) a=max(a,b)
#define chkmin(a,b) a=min(a,b)
#define all(a) a.begin(),a.end()
#define fast {ios_base::sync_with_stdio(0); cin.tie(0);}

const int inf = 1e18;
const int INF = 1e9;

int n, d, m;

int32_t main()
{
    fast;
    cin >> n >> d >> m;
    vector<set<int>> starts_in(n+1);
    vector<set<int>> ends_in(n+1);
    vi rel_days;
    vi tasks(m);
    loop(i,0,m){
        cin >> tasks[i];
        int s=tasks[i], e=s+d;
        starts_in[s].insert(i);
        ends_in[e].insert(i);
    }

    loop(i,1,n+1) if(!starts_in[i].empty()) rel_days.pb(i);
    int cnt_tasks=0;
    int cnt_machine=0;

    vvi tasks_per_day(n+1);

    while(cnt_tasks<m){
        cnt_machine++;
        set<ii> cur_tasks;
        auto p_day = 0;
        int cur_day=0;

        while(cur_day<=n && (p_day < rel_days.size() || !cur_tasks.empty())){
            if(cur_tasks.empty()){
                cur_day = rel_days[p_day]; p_day++;
            }
            else if(cur_day == rel_days[p_day]) p_day++;
            //inserting today's tasks
            if(!starts_in[cur_day].empty()){
                cur_tasks.insert({cur_day+d, starts_in[cur_day].size()});
            }
            //finding current task
            ii cur = *cur_tasks.begin();
            int cur_day_t = cur.x, cur_cnt_t = cur.y;
            cur_tasks.erase(cur_tasks.begin());
            if(cur_cnt_t > 1) cur_tasks.insert({cur_day_t, cur_cnt_t-1});
            int cur_t = *(ends_in[cur_day_t].begin());

            tasks_per_day[cur_day].pb(cur_t);
            starts_in[tasks[cur_t]].erase(starts_in[tasks[cur_t]].find(cur_t));
            ends_in[cur_day_t].erase(ends_in[cur_day_t].begin());

            //erasing tasks that end today
            auto ers = cur_tasks.lower_bound({cur_day,1});
            if(ers != cur_tasks.end() && (*ers).x == cur_day){
                cur_tasks.erase(ers);
            }
            cnt_tasks++;
            cur_day++;
        }

        rel_days.clear();
        loop(i,1,n+1) if(!starts_in[i].empty()) rel_days.pb(i);
    }
    cout << cnt_machine << endl;
    loop(i,1,n+1){
        for(int t: tasks_per_day[i]) cout << t+1 << " ";
        cout << "0\n";
    }
    return 0;
}

Compilation message (stderr)

jobs.cpp: In function 'int32_t main()':
jobs.cpp:53:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |         while(cur_day<=n && (p_day < rel_days.size() || !cur_tasks.empty())){
      |                              ~~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 100