Submission #526065

# Submission time Handle Problem Language Result Execution time Memory
526065 2022-02-13T16:24:18 Z Bungmint Job Scheduling (CEOI12_jobs) C++17
100 / 100
151 ms 13888 KB
//Copyright © 2021 Youngmin Park. All rights reserved.
#pragma GCC optimize("O3")
#pragma GCC target("avx2")
#include <bits/stdc++.h>
using namespace std;

using ll = long long;
using vi = vector<int>;
using pii = pair<int, int>;
using vpi = vector<pii>;
using pll = pair<ll, ll>;
using vl = vector<ll>;
using vpl = vector<pll>;
using ld = long double;

#define all(v) (v).begin(), (v).end()
#define ar array
#define pb push_back
#define sz(x) (int)(x).size()
#define fi first
#define se second
#define lb lower_bound
#define ub upper_bound
#define FOR(i, a, b) for (int i = (a); i < (b); ++i)
#define F0R(i, a) FOR(i, 0, a)
#define ROF(i, a, b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i, a) ROF(i, 0, a)
#define REP(a) F0R(_, a)

const int INF = 1e9;
const ll LINF = 1e18;
const int MOD = 1e9 + 7; //998244353;
const ld PI = acos((ld)-1.0);
const int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
template <typename T>
using pqg = priority_queue<T, vector<T>, greater<T>>;
template <typename T>
bool ckmin(T &a, const T &b) { return b < a ? a = b, 1 : 0; }
template <typename T>
bool ckmax(T &a, const T &b) { return b > a ? a = b, 1 : 0; }

template <typename A, typename B>
ostream &operator<<(ostream &os, const pair<A, B> &p)
{
    return os << '(' << p.first << ", " << p.second << ')';
}
template <typename T_container, typename T = typename enable_if<!is_same<T_container, string>::value, typename T_container::value_type>::type>
ostream &operator<<(ostream &os, const T_container &v)
{
    os << '{';
    string sep;
    for (const T &x : v)
        os << sep << x, sep = ", ";
    return os << '}';
}
void dbg_out()
{
    cerr << endl;
}
template <typename Head, typename... Tail>
void dbg_out(Head H, Tail... T)
{
    cerr << ' ' << H;
    dbg_out(T...);
}
#ifdef LOCAL
#define dbg(...) cerr << "(" << #__VA_ARGS__ << "):", dbg_out(__VA_ARGS__)
#else
#define dbg(...) 42
#endif

struct chash
{
    static uint64_t splitmix64(uint64_t x)
    {
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }

    size_t operator()(uint64_t x) const
    {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
    size_t operator()(pair<uint64_t,uint64_t> x) const {
		static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
		return splitmix64(x.first + FIXED_RANDOM)^(splitmix64(x.second + FIXED_RANDOM) >> 1);
	}
};

void setIO(string s)
{
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}

void solve()
{
	int n, m, d;
	cin >> n >> d >> m;
	vi a(n+1);
	vector<vi> b(n+1);
	FOR(i, 1, 1+m){
		int x;
		cin >> x;
		a[x]++;
		b[x].pb(i);
	}
	int l = 1, r = m, ans = 1;
	while(l<=r){
		int mid = (l+r)/2;
		deque<pii> todo;
		int delay = 0;
		for (int i = 1; i<=n;i++){
			todo.pb({i, a[i]});
			int work = mid;
			while(work&&sz(todo)){
				auto [day, num] = todo.front(); todo.pop_front();
				int val = min(num, work);
				work -= val, num -= val;
				ckmax(delay, i-day);
				if (num) todo.push_front({day, num});
			}
		}
		// dbg(delay, mid);
		if (delay<=d) ans = mid, r = mid - 1;
		else l = mid + 1;
	}
	cout << ans << "\n";
	int id = 0;
	FOR(i, 1, n+1){
		while(id<=n&&sz(b[id])==0)id++;
		vi tmp;
		if (id<=i){
			while(sz(tmp)<ans&&id<=i){
				while(id<=i&&sz(b[id])==0)id++;
				if (id<=i){
					tmp.pb(b[id].back());
					b[id].pop_back();
				}
			}
		}
		tmp.pb(0);
		FOR(j, 0, sz(tmp))	cout << tmp[j] << " \n"[j==sz(tmp)-1];
	}
}

int main()
{
    cin.tie(0)->sync_with_stdio(0);
    cin.exceptions(cin.failbit);
    int testcase=1;
    // cin >> testcase;
    while (testcase--)
    {
        solve();
    }
}

Compilation message

jobs.cpp: In function 'void setIO(std::string)':
jobs.cpp:96:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   96 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
jobs.cpp:97:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   97 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 16 ms 2048 KB Output is correct
2 Correct 16 ms 2044 KB Output is correct
3 Correct 16 ms 2044 KB Output is correct
4 Correct 16 ms 2024 KB Output is correct
5 Correct 17 ms 2040 KB Output is correct
6 Correct 17 ms 2044 KB Output is correct
7 Correct 17 ms 2044 KB Output is correct
8 Correct 17 ms 1952 KB Output is correct
9 Correct 35 ms 4480 KB Output is correct
10 Correct 36 ms 4440 KB Output is correct
11 Correct 16 ms 1484 KB Output is correct
12 Correct 31 ms 2592 KB Output is correct
13 Correct 45 ms 4548 KB Output is correct
14 Correct 79 ms 5992 KB Output is correct
15 Correct 75 ms 6800 KB Output is correct
16 Correct 105 ms 8632 KB Output is correct
17 Correct 149 ms 10584 KB Output is correct
18 Correct 119 ms 10504 KB Output is correct
19 Correct 151 ms 13888 KB Output is correct
20 Correct 124 ms 10540 KB Output is correct