Submission #92076

#	Time	Username	Problem	Language	Result	Execution time	Memory
92076		someone_aa	Job Scheduling (CEOI12_jobs)	C++17	90 / 100	305 ms	19960 KiB

jobs

#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define mp make_pair
using namespace std;
const int maxn = 100100;
int n, d, m, x;
int arr[maxn];
vector<int>v[maxn];
vector<int>result[maxn];
bool check(int x) {
    deque<pair<int,int> > dq;
    for(int i=1;i<=n;i++) {
        dq.pb(mp(i, arr[i]));
        int value = x;

        /*cout<<"Before processing: \n";
        for(auto i:dq) {
            cout<<i.first<<" "<<i.second<<"\n";
        }*/

        while(value > 0 && dq.size()) {
            if(dq.front().first < i - d) return false;
            if(dq.front().second <= value) {
                value -= dq.front().second;
                dq.front().second = 0;
            }
            else {
                dq.front().second -= value;
                value = 0;
            }

            if(dq.front().second == 0) dq.pop_front();

        }

        /*cout<<"After processing: \n";
        for(auto i:dq) {
            cout<<i.first<<" "<<i.second<<"\n";
        }
        cout<<"--->\n";*/

    }
    return dq.size() == 0;
}

void get_result(int x) {
    deque<pair<int,int> > dq;
    for(int i=1;i<=n;i++) {
        dq.pb(mp(i, arr[i]));
        int value = x;

        /*cout<<"Before processing: \n";
        for(auto i:dq) {
            cout<<i.first<<" "<<i.second<<"\n";
        }*/

        while(value > 0 && dq.size()) {
            if(dq.front().second <= value) {
                value -= dq.front().second;
                for(int j=0;j<dq.front().second;j++) {
                    result[i].pb(v[dq.front().first].back());
                    v[dq.front().first].pop_back();
                }
                dq.front().second = 0;
            }
            else {
                dq.front().second -= value;
                for(int j=0;j<value;j++) {
                    result[i].pb(v[dq.front().first].back());
                    v[dq.front().first].pop_back();
                }
                value = 0;
            }
            if(dq.front().second == 0) dq.pop_front();
        }
    }

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

int main() {
    cin>>n>>d>>m;
    for(int i=1;i<=m;i++) {
        cin>>x;
        arr[x]++;
        v[x].pb(i);
    }

    int maxv = 0;
    for(int i=1;i<=n;i++) {
        maxv = max(maxv, arr[i]);
    }

    int li = 1, ri = m;
    int answ = INT_MAX;
    while(li < ri) {
        int mid = (li+ri)/2;
        if(check(mid)) ri = mid;
        else li = mid + 1;
    }
    if(!check(li)) li = maxv;
    cout<<li<<"\n";
    get_result(li);
    return 0;
}

Compilation message (stderr)

jobs.cpp: In function 'int main()':
jobs.cpp:99:9: warning: unused variable 'answ' [-Wunused-variable]
     int answ = INT_MAX;
         ^~~~

• Subtask 1: 90 / 100