Submission #831226

#	Time	Username	Problem	Language	Result	Execution time	Memory
831226		TimAni	Job Scheduling (CEOI12_jobs)	C++17	100 / 100	190 ms	13756 KiB

jobs

#include <algorithm>
#include <cassert>
#include <cstdio>
#include <iostream>
#include <string>
#include <vector>
#include <set>
#include <map>
#include <numeric>
#include <stack>
#include <queue>
#include <cmath>

//#ifndef ONLINE_JUDGE
//#include "/home/linux/Learning/headers/debug.h"
//#else
//#define debug(...)
//#endif

using namespace std;
using ll = long long;

void setIO(string File_name) {
    cin.tie(0)->sync_with_stdio(0);
    if (File_name.size()) {
        freopen((File_name + ".in").c_str(), "r", stdin);
        freopen((File_name + ".out").c_str(), "w", stdout);
    }
}


void sol() {
    int n, d, m;
    cin >> n >> d >> m;
    vector<pair<int, int>> v(m);
    for (int i = 0; i < m; i++)
        cin >> v[i].first, v[i].second = i + 1;
    sort(v.begin(), v.end());
    auto good = [&](int mid) {
        for (int i = 0, day = 0, free = mid; i < m; day++, free = mid) {
            while (i < m && v[i].first <= day && free > 0) {
                if (day - v[i].first > d) return false;
                i++;
                free--;
            }
        }
        return true;
    };

    int l = 0, r = m + 1;
    while (r > l) {
        int mid = l + (r - l) / 2;
        if (good(mid))
            r = mid;
        else
            l = mid + 1;
    }
    cout << r << '\n';
    int day = v[0].first;
    int free = r;
    for (int i = 0, j = 1; j <= n; j++) {
        while (i < m && v[i].first <= day && free > 0) {
            cout << v[i].second << ' ';
            i++;
            free--;
        }
        cout << "0\n";
        day++;
        free = r;
    }
}

int main() {
    setIO("");
    int T = 1;
    //cin >> T;
    while (T--) sol();
    return 0;
}

Compilation message (stderr)

jobs.cpp: In function 'void setIO(std::string)':
jobs.cpp:26:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |         freopen((File_name + ".in").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
jobs.cpp:27:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |         freopen((File_name + ".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100