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Submission #245797

# Submission time Handle Problem Language Result Execution time Memory
245797 2020-07-07T12:28:52 Z quocnguyen1012 Job Scheduling (IOI19_job) C++14
26 / 100
 860 ms 19064 KB 
#ifndef LOCAL
#include "job.h"
#endif // LOCAL
#include <bits/stdc++.h>

#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define eb emplace_back
#define ar array

using namespace std;
typedef long long ll;
typedef pair<int, int> ii;

const int maxn = 2e5 + 5;

ll cost[maxn], tim[maxn];
int N;
int lab[maxn], mark[maxn];
ll t = 0, res;

int finds(int u)
{
  if(lab[u] == u) return u;
  return lab[u] = finds(lab[u]);
}

struct cmp
{
  bool operator ()(int a, int b) const
  {
    return cost[a] * tim[b] > cost[b] * tim[a];
  }
};
set<int, cmp> se;

ll scheduling_cost(std::vector<int> p, std::vector<int> u, std::vector<int> d)
{
  N = p.size();
  for(int i = 0; i < N; ++i){
    tim[i] = d[i];
    cost[i] = u[i];
    lab[i] = i;
  }
  for(int i = 0; i < N; ++i)
    se.insert(i);
  for(int i = 0; i < N; ++i){
    int now = *se.begin();
    se.erase(now);
    //cerr << now << '\n';
    if(p[now] == -1 || mark[finds(p[now])]){
      t += tim[now];
      res += 1ll * cost[now] * t;
      mark[now] = 1;
      continue;
    }
    int top = finds(p[now]);
    se.erase(top);
    res -= 1ll * cost[top] * tim[now];
    cost[top] += cost[now];
    tim[top] += tim[now];
    se.insert(top);
    lab[now] = top;
  }
  return res;
}

#ifdef LOCAL
signed main(void)
{
  ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  #ifdef LOCAL
    freopen("A.INP", "r", stdin);
    freopen("A.OUT", "w", stdout);
  #endif // LOCAL
  int n; cin >> n;
  vector<int> p(n), u(n), d(n);
  for(auto & it : p) cin >> it;
  for(auto & it : u) cin >> it;
  for(auto & it : d) cin >> it;
  cout << scheduling_cost(p, u, d);
}
#endif // LOCAL

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 6 ms 384 KB Output is correct
5 Correct 98 ms 4856 KB Output is correct
6 Correct 258 ms 9336 KB Output is correct
7 Correct 511 ms 13944 KB Output is correct
8 Correct 818 ms 18424 KB Output is correct
9 Correct 727 ms 18400 KB Output is correct
10 Correct 728 ms 18428 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 733 ms 18296 KB Output is correct
13 Correct 410 ms 18424 KB Output is correct
14 Correct 380 ms 18936 KB Output is correct
15 Correct 233 ms 18280 KB Output is correct
16 Correct 274 ms 19064 KB Output is correct
17 Correct 781 ms 18424 KB Output is correct
18 Correct 764 ms 18424 KB Output is correct
19 Correct 177 ms 18296 KB Output is correct
20 Correct 160 ms 19064 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Incorrect 5 ms 384 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Incorrect 13 ms 1280 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 848 ms 18332 KB Output is correct
3 Correct 860 ms 18424 KB Output is correct
4 Incorrect 757 ms 18440 KB Output isn't correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 6 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct

Subtask #6
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 6 ms 384 KB Output is correct
5 Correct 98 ms 4856 KB Output is correct
6 Correct 258 ms 9336 KB Output is correct
7 Correct 511 ms 13944 KB Output is correct
8 Correct 818 ms 18424 KB Output is correct
9 Correct 727 ms 18400 KB Output is correct
10 Correct 728 ms 18428 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 733 ms 18296 KB Output is correct
13 Correct 410 ms 18424 KB Output is correct
14 Correct 380 ms 18936 KB Output is correct
15 Correct 233 ms 18280 KB Output is correct
16 Correct 274 ms 19064 KB Output is correct
17 Correct 781 ms 18424 KB Output is correct
18 Correct 764 ms 18424 KB Output is correct
19 Correct 177 ms 18296 KB Output is correct
20 Correct 160 ms 19064 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Incorrect 5 ms 384 KB Output isn't correct
24 Halted 0 ms 0 KB -