Submission #1301912

#	Time	Username	Problem	Language	Result	Execution time	Memory
1301912		Bzslayed	Job Scheduling (CEOI12_jobs)	C++20	90 / 100	252 ms	32836 KiB

jobs

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
    
#define ll long long
#define ull unsigned long long
#define ld long double
#define pll pair<ll, ll>
#define pii pair<int, int>
#define coutpair(p) cout << p.first << " " << p.second << "|"

template<class T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<class T> using ordered_multiset = tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>;

const ll INF = 1e15;

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    ll n, d, m; cin >> n >> d >> m;
    pll jb[m];
    for (int i=0; i<m; i++) cin >> jb[i].first, jb[i].second = i+1;
    sort(jb, jb+m);

    ll lo = 1, hi = 1e9, ans = INF;
    deque<pll> dq;
    while (lo <= hi){
        ll x = (lo+hi)/2;
        dq.clear();
        for (int i=1; i<=n; i++) dq.push_back({i, x});

        bool pos = true;
        for (int i=0; i<m; i++){
            ll tar = jb[i].first+d;
            if (tar < dq.front().first || dq.empty()){
                pos = false;
                break;
            }
            while (jb[i].first > dq.front().first) dq.pop_front();

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

        if (pos) hi = x-1, ans = min(ans, x);
        else lo = x+1;
    }

    dq.clear();
    for (int i=1; i<=n; i++) dq.push_back({i, ans});
    vector<ll> v[n+1];
    for (int i=0; i<m; i++){
        auto [day, id] = jb[i];

        while (day > dq.front().first) dq.pop_front();
        v[dq.front().first].push_back(id); dq.front().second--;
        if (dq.front().second == 0) dq.pop_front();
    }

    cout << ans << "\n";
    for (int i=1; i<=n; i++){
        if (v[i].empty()) cout << 0 << "\n";
        else{
            for (auto it : v[i]) cout << it << " ";
            cout << 0 << "\n";
        }
    }
    
    return 0;
}

• Subtask 1: 90 / 100