oj.uz

Submission #974912

# Submission time Handle Problem Language Result Execution time Memory
974912 2024-05-04T06:50:24 Z coolsentenceidontremember Job Scheduling (CEOI12_jobs) C++17
100 / 100
 317 ms 31448 KB 
#include<bits/stdc++.h>

#define ll long long
#define ld long double
#define ff first
#define ss second
#define db double
#define time_begin() auto begin = chrono::high_resolution_clock::now()
#define time_end() auto end = chrono::high_resolution_clock::now(); auto elapsed = chrono::duration_cast<chrono::nanoseconds>(end-begin); auto sec = elapsed.count() * 1e-9; cerr << "\n\nExecution time: " << sec << " seconds";
#define check_time() cerr << "\nStatus : "; if (sec>1) cerr << "Time Limit Exceeded 1!!!1!111"; else cerr << "You good brother"

using namespace std;

void setIO(string s = ""){
 ios_base::sync_with_stdio(false);
 cin.tie(nullptr);
 cout.tie(nullptr);
 if (!s.empty()){
	freopen((s+".in").c_str(), "r", stdin);
	freopen((s+".out").c_str(), "w", stdout);
	}
}

int n, d, m;

vector<pair<int, int>> job;

pair<bool, vector<vector<int>>> valid(const int &machine){
	vector<vector<int>> ret(n+1);
	int cnt = 0;
	for (int i = 1; i <= n; i++){
		for (int j = 1; j <= machine; j++){
			if (job[cnt].ff > i) break;
			if (job[cnt].ff + d < i) return {false, {{}}};
			ret[i].push_back(job[cnt++].ss);
			if (cnt == m) return {true, ret};
		}
	}
	return {false, {{}}};
}






int main(){
	setIO();
    cin >> n >> d >> m;
    for (int i = 1; i <= m; i++){
    	int a;
    	cin >> a;
    	job.push_back({a, i});
	}
	vector<vector<int>> res;
	sort(job.begin(), job.end());
	int l = 1, r = m;
	while (l < r){
		int m = l + (r-l)/2;
		pair<bool, vector<vector<int>>> p = valid(m);
		if (p.ff){
			res = p.ss;
			r = m;
		} else l = m+1;
	}
	cout << l << '\n';
	for (int i = 1; i <= n; i++){
		for (const int &a : res[i]) cout << a << ' ';
		cout << 0 << '\n';
	}
}

Compilation message

jobs.cpp: In function 'void setIO(std::string)':
jobs.cpp:19:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |  freopen((s+".in").c_str(), "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
jobs.cpp:20:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |  freopen((s+".out").c_str(), "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 3544 KB Output is correct
2 Correct 19 ms 3736 KB Output is correct
3 Correct 21 ms 3532 KB Output is correct
4 Correct 18 ms 3540 KB Output is correct
5 Correct 19 ms 3540 KB Output is correct
6 Correct 18 ms 3552 KB Output is correct
7 Correct 19 ms 3532 KB Output is correct
8 Correct 18 ms 3540 KB Output is correct
9 Correct 49 ms 10068 KB Output is correct
10 Correct 52 ms 10052 KB Output is correct
11 Correct 29 ms 3532 KB Output is correct
12 Correct 56 ms 6908 KB Output is correct
13 Correct 89 ms 12220 KB Output is correct
14 Correct 135 ms 16068 KB Output is correct
15 Correct 147 ms 15940 KB Output is correct
16 Correct 189 ms 22736 KB Output is correct
17 Correct 220 ms 27660 KB Output is correct
18 Correct 228 ms 28984 KB Output is correct
19 Correct 317 ms 31448 KB Output is correct
20 Correct 221 ms 27052 KB Output is correct