Submission #1280337

#	Time	Username	Problem	Language	Result	Execution time	Memory
1280337		ducanh0811	Job Scheduling (CEOI12_jobs)	C++20	100 / 100	98 ms	25724 KiB

jobs

#include <bits/stdc++.h>
#define int long long
#define FOR(i, a, b) for (int i = (a), _b = (b); i <= _b; ++i)
#define REV(i, a, b) for (int i = (a), _b = (b); i >= _b; --i)
using namespace std;

#define MAXN 100005

int n, d, m;
vector<int> task[MAXN];
vector<int> res[MAXN];

bool g(int x){
    deque<pair<int, int>> dq;
    FOR(i, 1, n){
        if (task[i].size()) dq.push_back(make_pair(i + d, task[i].size()));
        int take = x;
        while (take > 0 && dq.size()) {
            pair<int, int> tmp = dq.front();
            dq.pop_front();
            if (take >= tmp.second) {
                take -= tmp.second;
            } else {
                tmp.second -= take;
                take = 0;
                dq.push_front(tmp);
            }
        }
        if (dq.size() && dq.front().first <= i) return false;
    }
    return true;
}

void solve(){
    cin >> n >> d >> m;
    FOR(i, 1, m){
        int x; cin >> x;
        task[x].push_back(i);
    }
    int lo = 1, hi = m, ans = hi;
    while (lo <= hi){
        int mid = (lo + hi) >> 1;
        if (g(mid)){
            ans = mid;
            hi = mid - 1;
        } else lo = mid + 1;
    }
    cout << ans << '\n';
    deque<int> process;
    FOR(i, 1, n){
        for (int &x : task[i]) process.push_back(x);
        int take = ans;
        while (take > 0 && process.size()){
            take--;
            res[i].push_back(process.front());
            process.pop_front();
        }
    }
    FOR(i, 1, n){
        for (int &x : res[i]) cout << x << ' ';
        cout << "0\n";
    }
}

/**
8 2 12
1 2 4 2 1 3 5 6 2 3 6 4

6 3 6
1 1 1 1 1 1
**/

int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
    solve();
    return 0;
}

• Subtask 1: 100 / 100