Submission #642974

#	Time	Username	Problem	Language	Result	Execution time	Memory
642974		thinhcute	Job Scheduling (CEOI12_jobs)	C++17	0 / 100	147 ms	1996 KiB

jobs

#include <bits/stdc++.h>
using namespace std;

#define fi first
#define se second

#define MAX 100100

int n, d, m;
pair<int, int> a[MAX];

bool f(int mid)
{
    int i = 1, day;
    queue<pair<int, int>> q;

    while (i <= m) {
        day = a[i].fi;
        while (a[i].fi == day && i <= m) {
            q.push(a[i]);
            i++;
        }
        while ((int) q.size() && day <= a[i - 1].fi) {
            for (int k = 1; k <= mid; k++) {
                if (q.empty()) goto SKIP;
                if (abs(q.front().fi - day) > d) return false;
                q.pop();
            }
            day++;
        }

        SKIP:;
    }

    return day - 1 <= n && q.empty(); 
}

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

    cin >> n >> d >> m;
    for (int i = 1; i <= m; i++) {
        cin >> a[i].fi;
        a[i].se = i;
    }

    sort(a + 1, a + m + 1);

    int l = 1, r = n, res = -1;
    while (l <= r) {
        int mid = (l + r) >> 1;
        if (f(mid)) {
            res = mid;
            r = mid - 1;
        } else l = mid + 1;
    }

    cout << res << endl;
    
	int j = 1;
    for (int i = 1; i <= n; i++) {
		int cnt = 0;
        // cout << i << " " << j << " " << a[j].fi << endl;
		while (cnt < res && j <= m && abs(a[j].fi - i) <= d) {
            cnt++;
            cout << a[j].se << " ";
            j++;
        }
        cout << 0 << endl;
	}

	return 0;
}

Compilation message (stderr)

jobs.cpp: In function 'bool f(int)':
jobs.cpp:35:16: warning: 'day' may be used uninitialized in this function [-Wmaybe-uninitialized]
   35 |     return day - 1 <= n && q.empty();
      |            ~~~~^~~

• Subtask 1: 0 / 100