Submission #1134545

#	Time	Username	Problem	Language	Result	Execution time	Memory
1134545		amin5555	Job Scheduling (CEOI12_jobs)	C++20	100 / 100	263 ms	26320 KiB

jobs

#include <bits/stdc++.h>

using namespace std;
vector<pair<int, int>> requests;
int n, d, m;

pair<vector<vector<int>>, bool> valid(int num_machines){
    vector<vector<int>> schedule(n);
    int reqNum = 0;
    for(int day = 0; day < n; day++){
        for(int i=0; i < num_machines; i++){
            if(requests[reqNum].first > day + 1){
                break;
            }

            if(requests[reqNum].first + d < day + 1) return make_pair(schedule, false);
            
            schedule[day].push_back(requests[reqNum++].second);

            if(reqNum == m) return make_pair(schedule, true);
        }
    }

    return make_pair(schedule, false);
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin >> n >> d >> m;
    requests.resize(m);
    for(int i=0; i<m; i++){
        cin >> requests[i].first;
        requests[i].second = i;
    }

    sort(requests.begin(), requests.end());
    vector<vector<int>> schedule;
    int lo = 1, hi = m;
    while(lo < hi){
        int mid = lo + (hi - lo) / 2;
        pair<vector<vector<int>>, bool> res = valid(mid);
        if(res.second){
            hi = mid;
            schedule = res.first;
        } else {
            lo = mid + 1;
        }
    }

    cout << hi << '\n';
    for(auto day: schedule){
        for(int job: day){
            cout << job + 1 << ' ';
        }
        cout << "0\n";
    }
}

• Subtask 1: 100 / 100