Submission #481744

#	Time	Username	Problem	Language	Result	Execution time	Memory
481744		mehdi_farhadian	Job Scheduling (CEOI12_jobs)	C++14	100 / 100	339 ms	13764 KiB

jobs

#include <bits/stdc++.h>
#define pb push_back
#define endl '\n'
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("O0")
#pragma GCC optimize("O1")
using namespace std;
typedef long long ll;

const int N = 1e6 + 10;
int n, d, m;
vector<pair<int, int>> vec;

bool check(int x)
{
    queue<int> q;
    int last = 0;
    for (int i = 1; i <= n; i++) {
        while (last < vec.size() && vec[last].first == i) {
            q.push(i);
            last++;
        }
        int cnt = 0;
        while (q.size() && cnt < x) {
            cnt++;
            int tmp = q.front();
            if (i - tmp > d) {
                return false;
            }
            q.pop();
        }
    }
    return q.size() == 0;
}

void print(int x)
{
    int ind = 0;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < x && ind < vec.size(); j++) {
            cout << vec[ind].second << " ";
            ind++;
        }
        cout << 0 << endl;
    }
}

void solve()
{
    int l = -1, r = 1e6;
    while (l + 1 < r) {
        int m = (l + r) / 2;
        if (check(m)) {
            r = m;
        }
        else {
            l = m;
        }
    }
    cout << r << endl;
    print(r);
}

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin >> n >> d >> m;
    vec.resize(m);
    for (int i = 0; i < m; i++) {
        cin >> vec[i].first;
        vec[i].second = i + 1;
    }
    sort(vec.begin(), vec.end());
    solve();
}

Compilation message (stderr)

jobs.cpp: In function 'bool check(int)':
jobs.cpp:20:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |         while (last < vec.size() && vec[last].first == i) {
      |                ~~~~~^~~~~~~~~~~~
jobs.cpp: In function 'void print(int)':
jobs.cpp:41:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |         for (int j = 0; j < x && ind < vec.size(); j++) {
      |                                  ~~~~^~~~~~~~~~~~

• Subtask 1: 100 / 100