Submission #1134531

#	Time	Username	Problem	Language	Result	Execution time	Memory
1134531		amin5555	Job Scheduling (CEOI12_jobs)	C++20	95 / 100	177 ms	20076 KiB

jobs

#include <bits/stdc++.h>

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

void buildSchedule(int machines){
    int day = 0;
    for(int i=0; i<m; i++){
        schedule[day].push_back(requests[i].second);
        if(!((i+1) % machines)){
            day++;
        }
    }
}

bool valid(int num_machines){
    int days = 0;
    int cur = 0;
    int time = requests[0].first;
    for(auto req: requests){
        if(time > req.first + d){ return 0; }
        if(cur + 1 > num_machines){
            days++;
            time++;
            cur = 0;
        }
        cur++;
    }

    if(cur) days++;
    return days <= n;
}

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

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

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

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

• Subtask 1: 95 / 100