oj.uz

Submission #473864

# Submission time Handle Problem Language Result Execution time Memory
473864 2021-09-16T10:53:46 Z Killer2501 Job Scheduling (IOI19_job) C++14
19 / 100
 302 ms 21036 KB 
#include "job.h"
#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define ull unsigned long long
#define pb push_back
#define pld pair<ld, ll>
#define fi first
#define se second
using namespace std;
const int N = 4e5+5;
const int M = 205;
const ll mod = 1e9+7;
const ld base = 1e-5;
ll n, m, k, ans, lab[N], cost[N], tim[N], id[N], par[N], t;
ld d[N];
struct node
{
	bool operator ()(ll x, ll y) const
	{
		if(cost[x] * tim[y] == cost[y] * tim[x])return x < y;
		cost[x] * tim[y] > cost[y] * tim[x];
	}
};
ll findp(ll u)
{
	return lab[u] < 0 ? u : lab[u] = findp(lab[u]);
}
priority_queue<pld> pq;
ll scheduling_cost(vector<int> p, vector<int> c, vector<int> di)
{
	n = p.size();
	fill_n(lab, n+1, -1);
	for(int i = 1; i <= n; i ++)
	{
		par[i] = p[i-1]+1;
		cost[i] = c[i-1];
		tim[i] = di[i-1];
		d[i] = 1.0 * cost[i] / tim[i];
		pq.push({d[i], i});
		//cout << cost[i]  <<" "<<tim[i]<<" ";
	}
	while(!pq.empty())
	{
		pld u = pq.top();
		pq.pop();
		if(abs(d[u.se]-u.fi) > base)continue;
		//cout << (ld)u.fi <<" ";
		if(!par[u.se] || d[findp(par[u.se])] == -1)
		{
 
			t += tim[u.se];
			ans += t * cost[u.se];
			d[u.se] = -1;
		}
		else
		{
			ll v = findp(par[u.se]);
			ans -= cost[v] * tim[u.se];
			cost[v] += cost[u.se];
			tim[v] += tim[u.se];
			lab[u.se] = v;
			d[v] = 1.0 * cost[v] / tim[v];
			pq.push({d[v], v});
		}
 
	}
	return ans;
}

Compilation message

job.cpp: In member function 'bool node::operator()(long long int, long long int) const':
job.cpp:22:20: warning: statement has no effect [-Wunused-value]
   22 |   cost[x] * tim[y] > cost[y] * tim[x];
      |   ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Incorrect 54 ms 5492 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 186 ms 20832 KB Output is correct
5 Correct 169 ms 20796 KB Output is correct
6 Correct 169 ms 20772 KB Output is correct
7 Correct 179 ms 20720 KB Output is correct
8 Correct 177 ms 20804 KB Output is correct
9 Correct 177 ms 21036 KB Output is correct
10 Correct 168 ms 20792 KB Output is correct
11 Correct 178 ms 20784 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 7 ms 1604 KB Output is correct
6 Correct 183 ms 20780 KB Output is correct
7 Correct 176 ms 20780 KB Output is correct
8 Correct 177 ms 20780 KB Output is correct
9 Correct 178 ms 20936 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 1 ms 460 KB Output is correct
12 Correct 6 ms 1508 KB Output is correct
13 Correct 8 ms 1608 KB Output is correct
14 Correct 172 ms 20780 KB Output is correct
15 Correct 178 ms 20908 KB Output is correct
16 Correct 174 ms 20832 KB Output is correct
17 Correct 173 ms 20828 KB Output is correct
18 Correct 177 ms 20776 KB Output is correct
19 Correct 172 ms 20780 KB Output is correct
20 Correct 176 ms 20900 KB Output is correct
21 Correct 170 ms 20772 KB Output is correct
22 Correct 171 ms 20784 KB Output is correct
23 Correct 188 ms 20896 KB Output is correct
24 Correct 179 ms 20752 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Incorrect 302 ms 20916 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Incorrect 1 ms 332 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #6
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Incorrect 54 ms 5492 KB Output isn't correct
6 Halted 0 ms 0 KB -