Submission #1316564

#	Time	Username	Problem	Language	Result	Execution time	Memory
1316564		the_commando_x	Job Scheduling (CEOI12_jobs)	C++20	30 / 100	233 ms	26892 KiB

jobs

// #pragma GCC optimize("O3")
#include <bits/stdc++.h>

using namespace std;

using vi = vector<int>;
using vvi = vector<vi>;
using vvvi = vector<vvi>;

using pii = pair<int, int>;
using vii = vector<pii>;
using vvii = vector<vii>;

using l = long long;
using vl = vector<l>;
using vvl = vector<vl>;
using vvvl = vector<vvl>;

using pll = pair<l, l>;
using vll = vector<pll>;
using vvll = vector<vll>;

using d = double;
using vd = vector<d>;
using vvd = vector<vd>;
using vvvd = vector<vvd>;

using ld = long double;
using vld = vector<ld>;
using vvld = vector<vld>;
using vvvld = vector<vvld>;

using vb = vector<bool>;
using vvb = vector<vb>;
using pbb = pair<bool, bool>;
using vbb = vector<pbb>;

#define ff first
#define ss second

#define pb push_back
#define eb emplace_back
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define sz(x) (int)(x).size()

void setIO(string name = "")
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    if (!name.empty())
    {
        (void)freopen((name + ".in").c_str(), "r", stdin);
        (void)freopen((name + ".out").c_str(), "w", stdout);
    }
}

const ld pi = 3.14159265358979323846;

const l LINF = 1e18;
const l INF = 1e9;

const l MOD = 1e9 + 7;
// const l MOD = 998244353;

const l MAXN = 2e5 + 5;

void solve()
{
    int n, d, m;
    cin >> n >> d >> m;

    vii a(m); // {date, idx}
    for (int i = 0; i < m; ++i)
        cin >> a[i].first, a[i].second = i;

    sort(all(a));

    auto check = [&](int x)
    {
        vvi b(n);

        int req = 0;
        for (int day = 0; day < n; ++day)
        {
            for (int j = 0; j < x; ++j)
            {
                if (a[req].first > day)
                    break;

                if (a[req].first + d > day)
                    b[day].pb(a[req++].second);
                else
                    return vvi();

                if (req == m)
                    return b;
            }
        }

        return vvi();
    };

    vvi res;

    int s = 1, e = m;
    while (s < e)
    {
        int mid = (s + e) / 2;

        auto cur = check(mid);
        if (cur.size())
            e = mid, res = cur;
        else
            s = mid + 1;
    }

    cout << s << "\n";
    for (int i = 0; i < n; ++i)
    {
        for (auto x : res[i])
            cout << x + 1 << " ";
        cout << 0 << "\n";
    }
}

int main()
{
    setIO("");

#ifndef ONLINE_JUDGE
    // setIO("filename");
#endif

    int t = 1;
    // cin >> t;
    while (t--)
        solve();

    return 0;
}

Compilation message (stderr)

jobs.cpp: In function 'void setIO(std::string)':
jobs.cpp:53:22: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   53 |         (void)freopen((name + ".in").c_str(), "r", stdin);
      |               ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
jobs.cpp:54:22: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   54 |         (void)freopen((name + ".out").c_str(), "w", stdout);
      |               ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 30 / 100