Submission #635618

#	Time	Username	Problem	Language	Result	Execution time	Memory
635618		nayhz	Job Scheduling (CEOI12_jobs)	C++17	95 / 100	561 ms	38108 KiB

jobs

// CEOI 2012 Dau 1 Job Scheduling
#include <bits/stdc++.h>
#define pii pair<int, int>

#define vi vector<int>
#define vpii vector<pair<int, int>>

#define fi first
#define se second
#define pb push_back
#define mp make_pair
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()

using namespace std;

/*
>>>>>>>>>>>>>>>>>>>>>>>>>>END OF TEMPLATE HEADER<<<<<<<<<<<<<<<<<<<<<<<<
*/

void solve () {
	int n, d, m; cin >> n >> d >> m;
	vpii a(m);
	for (int i = 0; i < m; i++) {cin >> a[i].fi; a[i].se = i + 1;}
	sort(all(a));

	vector<vi> ans(n);
	int l = 1, r = m, mid, day, i, cnt;

	function<pair<bool, vector<vi>> ()> check = [&] () {
		vector<vi> ret(n);
		cnt = 0;

		for (day = 1; day <= n; day++) {
			for (i = 0; i < mid; i++) {
				if (a[cnt].fi > day) break;

				if (a[cnt].fi + d >= day){ 
					ret[day - 1].pb(a[cnt++].se);
				}
				else return mp(false, ret);

				if (cnt == m) {
					return mp(true, ret);
				}
			}
		}
		return mp(false, ret);
	};

	pair<bool, vector<vi>> ret;
	while (l < r) {
		mid = l + ((r - l) >> 1);

		ret = check();
		if (ret.fi) {
			r = mid, ans = ret.se;
		} else l = mid + 1;
	}
	cout << l << '\n';

	for (i = 0; i < n; i++) {
		for (auto &x : ans[i]) cout << x << ' ';
		cout << "0\n";
	}
}

signed main () {
	solve();
	return 0;
}

• Subtask 1: 95 / 100