Submission #675770

#	Time	Username	Problem	Language	Result	Execution time	Memory
675770		aaggupta07	Job Scheduling (CEOI12_jobs)	C++17	100 / 100	296 ms	21228 KiB

jobs

// Source: https://usaco.guide/general/io

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

#define MAX_C 1'000'500
#define pb push_back
#define pi pair<int, int>
#define f first
#define s second

int n, d, m;
vector<pi> requests;


bool check(int r) {
	int days = 0, jobsDone = 0;
	for(int i = 0; i < m; ++i) {
		// process r requests per day
		if(requests[i].f > days) {
			days = requests[i].f;
			jobsDone = 1;
			continue;
		}
		if(jobsDone % r == 0 && jobsDone != 0) days += 1;
		if(days - requests[i].f > d) return false;

		++jobsDone;
	}
	return true;
}

int main() {
	ios::sync_with_stdio(false); cin.tie(nullptr);
	cin >> n >> d >> m;
	requests.resize(m);
	for(int i = 0; i < m; ++i) {
		cin >> requests[i].f;
		requests[i].s = i + 1;
	}

	sort(requests.begin(), requests.end());

	int ans = MAX_C;
	for(int b = MAX_C/2; b >= 1; b/=2) {
		while(ans - b >= 1 && check(ans - b)) ans -= b;
	}
	cout << ans << '\n';

	int days = 0, jobsDone = 0;
	vector<vector<int>> schedule(n);

	for(int i = 0; i < m; ++i) {
		// process r requests per day
		if(requests[i].f > days) {
			days = requests[i].f;
			jobsDone = 0;
		}
		else if(jobsDone % ans == 0 && jobsDone != 0) days += 1;
		++jobsDone;
		schedule[days-1].pb(requests[i].s);
	}

	for(auto& i: schedule) {
		for(int j: i) cout << j << ' '; cout << 0 << '\n';
	}
	return 0;
}

Compilation message (stderr)

jobs.cpp: In function 'int main()':
jobs.cpp:65:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   65 |   for(int j: i) cout << j << ' '; cout << 0 << '\n';
      |   ^~~
jobs.cpp:65:35: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   65 |   for(int j: i) cout << j << ' '; cout << 0 << '\n';
      |                                   ^~~~

• Subtask 1: 100 / 100