Submission #635603

#	Time	Username	Problem	Language	Result	Execution time	Memory
635603		nayhz	Job Scheduling (CEOI12_jobs)	C++17	0 / 100	571 ms	63804 KiB

jobs

// CEOI 2012 Dau 1 Job Scheduling
#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")

#include <bits/stdc++.h>
#define lck cout << "ick bmi 32.9\n"
#define cam_cs cout << "ick orz\n"
#define orz(x) cout << (x) << " orz\n"

#define pii pair<int, int>
#define pll pair<long long, long long>
#define pcc pair<char, char>
#define ll long long
#define ull unsigned long long
#define ld long double
#define int unsigned long long

#define vi vector<int>
#define vll vector<long long>
#define vd vector<double>
#define vpii vector<pair<int, int>>
#define vpll vector<pair<long long, long long>>
#define vc vector<char>
#define vsc vector<string>
#define vb vector<bool>

#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()

#define yes() cout << "YES\n"
#define no() cout << "NO\n"
#define impossible() cout << "Impossible\n"

template<typename T, typename V>
inline void print (const std::pair<T, V> &x) {std::cout << x.first << ' ' << x.second << '\n';}
template<typename T>
inline void print (const T &x) {std::cout << x << '\n';}
template<typename T>
inline void print (std::vector<T> &x) {for (auto &y : x) std::cout << y << " "; std::cout << '\n';}
inline void print () {std::cout << '\n';}
using namespace std;

const ld pi = acos(-1);
const ld eps = 1e-9;
const ll mod = 1000000007;
const ll inf = 1000000007;

clock_t T, NT;
inline double get_time() {NT = clock() - T; return (double)(NT) / CLOCKS_PER_SEC;}

void file_io (string x);

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

void solve (int &tc) {
	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;
	int l = 1, r = m, mid;

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

		for (int day = 1; day <= n; day++) {
			for (int i = 0; i < mid; i++) {
				if (a[i].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);
	};

	while (l < r) {
		mid = l + ((r - l) >> 1);

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

	for (auto &x : ans) x.pb(0);
	for (int i = 0; i < n; i++) print(ans[i]);
	cout << "0\n";
}

signed main () {
	cin.tie()->sync_with_stdio(false);
	T = clock();
	srand(time(NULL));
	// file_io("");

	int t = 1;
	// cin >> t;
	for (int i = 1; i <= t; i++) {
		solve(i);
		// if (i != t) cout << '\n';
	}
	// while (true) {solve(t); t++;}
	return 0;
}

void file_io (string x = "x") {
	string i = x + ".in";
	freopen(i.c_str(), "r", stdin);
	string o = x + ".out";
	freopen(o.c_str(), "w", stdout);
}

Compilation message (stderr)

jobs.cpp: In function 'void file_io(std::string)':
jobs.cpp:124:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  124 |  freopen(i.c_str(), "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
jobs.cpp:126:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  126 |  freopen(o.c_str(), "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 100