Submission #673787

#	Time	Username	Problem	Language	Result	Execution time	Memory
673787		Alihan_8	Job Scheduling (CEOI12_jobs)	C++17	0 / 100	199 ms	40532 KiB

jobs

#include <bits/stdc++.h>
// include <ext/pb_ds/assoc_container.hpp>
// include <ext/pb_ds/tree_policy.hpp>
// using namespace __gnu_pbds;
using namespace std;
#define all(x) x.begin(), x.end()
#define pb push_back
// define ordered_set tree<int,null_type,less_equal<int>,rb_tree_tag,tree_order_statistics_node_update>
#define mpr make_pair
#define ln '\n'
void IO(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
#define int long long
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int n, d, m; cin >> n >> d >> m;
    vector <pair<int,int>> p(m);
    int it = 0;
    for ( auto &[i, itr]: p ) cin >> i, itr = it++;
    vector <int> g[n+1];
    for ( auto [l, r]: p ) g[l].pb(r+1);
    auto ok = [&](int x){
        vector <int> mp(n+1);
        for ( auto [l, r]: p ) mp[l]++;
        int cnt = 0;
        for ( int day = 1; day+d <= n; day++ ){
            cnt += mp[day];
            cnt = max(0ll, cnt-x);
        }
        return !cnt;
    };
    int l = 0, r = m;
    while ( l < r ){
        int md = (l+r)>>1;
        if ( !ok(md) ) l = md+1;
        else r = md;
    }
    cout << l << ln;
    queue <int> q;
    for ( int day = 1; day <= n; day++ ){
        for ( auto i: g[day] ) q.push(i);
        int k = l;
        while ( !q.empty() and k > 0 ){
            cout << q.front() << ' ';
            q.pop(); k--;
        }
        cout << "0\n";
    }

    cout << '\n';
}

Compilation message (stderr)

jobs.cpp: In function 'void IO(std::string)':
jobs.cpp:11:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 | void IO(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
      |                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
jobs.cpp:11:70: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 | void IO(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
      |                                                               ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 100