oj.uz

Submission #315764

# Submission time Handle Problem Language Result Execution time Memory
315764 2020-10-23T21:46:01 Z tincamatei Job Scheduling (IOI19_job) C++14
24 / 100
 275 ms 60664 KB 
#include "job.h"
#include <vector>
#include <set>
#include <cstdio>

const int MAX_N = 200000;

long long res;

std::vector<int> graph[MAX_N];

struct DSUNode {
    int nod, sd, su;

    DSUNode(int _nod, int _sd, int _su) {
        nod = _nod;
        sd = _sd;
        su = _su;
    }

    bool operator< (const DSUNode x) const {
        return (long long)sd * x.su < (long long)su * x.sd ||
            ((long long)sd * x.su == su * x.sd && nod < x.nod);
    }
};

struct DSU {
    int sd, su;
    std::set<DSUNode> extended_neighbours;
} dsu[MAX_N];

void join(int a, int b) {
    res = res + (long long)dsu[a].sd * dsu[b].su;
    dsu[a].sd += dsu[b].sd;
    dsu[a].su += dsu[b].su;
    
    dsu[a].extended_neighbours.erase({b, dsu[b].sd, dsu[b].su});
    if(dsu[a].extended_neighbours.size() < dsu[b].extended_neighbours.size())
        dsu[a].extended_neighbours.swap(dsu[b].extended_neighbours);
    
    for(auto it: dsu[b].extended_neighbours)
        dsu[a].extended_neighbours.insert(it);
    dsu[b].extended_neighbours.clear();
}

void dfs(int nod) {
    for(auto it: graph[nod]) {
        dfs(it);
        dsu[nod].extended_neighbours.insert({it, dsu[it].sd, dsu[it].su});
    }
    
    while(!dsu[nod].extended_neighbours.empty()
    && DSUNode(nod, dsu[nod].sd, dsu[nod].su) < *dsu[nod].extended_neighbours.begin())
        join(nod, dsu[nod].extended_neighbours.begin()->nod);
}

long long scheduling_cost(std::vector<int> p, std::vector<int> u, std::vector<int> d) {
    int n = u.size();
    for(int i = 0; i < n; ++i) {
        dsu[i] = {d[i], u[i]};
        res = res + (long long)u[i] * d[i];
    }
    for(int i = 1; i < n; ++i)
        graph[p[i]].push_back(i);
    
    dfs(0);
    
    while(!dsu[0].extended_neighbours.empty())
        join(0, dsu[0].extended_neighbours.begin()->nod);

    return res;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 16000 KB Output is correct
2 Correct 10 ms 16000 KB Output is correct
3 Correct 10 ms 16000 KB Output is correct
4 Correct 11 ms 16128 KB Output is correct
5 Correct 42 ms 24952 KB Output is correct
6 Correct 73 ms 33952 KB Output is correct
7 Correct 105 ms 43128 KB Output is correct
8 Correct 136 ms 51992 KB Output is correct
9 Correct 143 ms 51960 KB Output is correct
10 Correct 139 ms 51960 KB Output is correct
11 Correct 11 ms 16000 KB Output is correct
12 Correct 138 ms 51996 KB Output is correct
13 Correct 137 ms 51960 KB Output is correct
14 Correct 137 ms 52088 KB Output is correct
15 Correct 142 ms 52088 KB Output is correct
16 Correct 143 ms 51960 KB Output is correct
17 Correct 141 ms 51960 KB Output is correct
18 Correct 139 ms 51960 KB Output is correct
19 Correct 142 ms 60664 KB Output is correct
20 Correct 134 ms 51960 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 16000 KB Output is correct
2 Correct 10 ms 16000 KB Output is correct
3 Correct 10 ms 16000 KB Output is correct
4 Correct 272 ms 35820 KB Output is correct
5 Correct 271 ms 35692 KB Output is correct
6 Correct 273 ms 35820 KB Output is correct
7 Correct 267 ms 35692 KB Output is correct
8 Correct 270 ms 35692 KB Output is correct
9 Correct 269 ms 35692 KB Output is correct
10 Correct 275 ms 35692 KB Output is correct
11 Correct 272 ms 35692 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 16000 KB Output is correct
2 Correct 10 ms 16000 KB Output is correct
3 Correct 11 ms 16000 KB Output is correct
4 Correct 11 ms 16000 KB Output is correct
5 Correct 18 ms 16896 KB Output is correct
6 Correct 266 ms 36332 KB Output is correct
7 Correct 262 ms 36332 KB Output is correct
8 Correct 266 ms 36460 KB Output is correct
9 Correct 265 ms 36336 KB Output is correct
10 Correct 11 ms 16000 KB Output is correct
11 Correct 12 ms 16128 KB Output is correct
12 Correct 17 ms 16768 KB Output is correct
13 Correct 18 ms 16896 KB Output is correct
14 Correct 267 ms 36332 KB Output is correct
15 Correct 263 ms 36332 KB Output is correct
16 Correct 271 ms 36568 KB Output is correct
17 Correct 266 ms 36332 KB Output is correct
18 Correct 262 ms 36332 KB Output is correct
19 Correct 260 ms 36332 KB Output is correct
20 Correct 263 ms 36332 KB Output is correct
21 Correct 260 ms 36368 KB Output is correct
22 Correct 273 ms 36260 KB Output is correct
23 Correct 263 ms 36208 KB Output is correct
24 Correct 260 ms 36332 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 10 ms 16000 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 16000 KB Output is correct
2 Incorrect 11 ms 16000 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 16000 KB Output is correct
2 Correct 10 ms 16000 KB Output is correct
3 Correct 10 ms 16000 KB Output is correct
4 Correct 11 ms 16128 KB Output is correct
5 Correct 42 ms 24952 KB Output is correct
6 Correct 73 ms 33952 KB Output is correct
7 Correct 105 ms 43128 KB Output is correct
8 Correct 136 ms 51992 KB Output is correct
9 Correct 143 ms 51960 KB Output is correct
10 Correct 139 ms 51960 KB Output is correct
11 Correct 11 ms 16000 KB Output is correct
12 Correct 138 ms 51996 KB Output is correct
13 Correct 137 ms 51960 KB Output is correct
14 Correct 137 ms 52088 KB Output is correct
15 Correct 142 ms 52088 KB Output is correct
16 Correct 143 ms 51960 KB Output is correct
17 Correct 141 ms 51960 KB Output is correct
18 Correct 139 ms 51960 KB Output is correct
19 Correct 142 ms 60664 KB Output is correct
20 Correct 134 ms 51960 KB Output is correct
21 Correct 10 ms 16000 KB Output is correct
22 Correct 10 ms 16000 KB Output is correct
23 Correct 10 ms 16000 KB Output is correct
24 Correct 272 ms 35820 KB Output is correct
25 Correct 271 ms 35692 KB Output is correct
26 Correct 273 ms 35820 KB Output is correct
27 Correct 267 ms 35692 KB Output is correct
28 Correct 270 ms 35692 KB Output is correct
29 Correct 269 ms 35692 KB Output is correct
30 Correct 275 ms 35692 KB Output is correct
31 Correct 272 ms 35692 KB Output is correct
32 Correct 10 ms 16000 KB Output is correct
33 Correct 10 ms 16000 KB Output is correct
34 Correct 11 ms 16000 KB Output is correct
35 Correct 11 ms 16000 KB Output is correct
36 Correct 18 ms 16896 KB Output is correct
37 Correct 266 ms 36332 KB Output is correct
38 Correct 262 ms 36332 KB Output is correct
39 Correct 266 ms 36460 KB Output is correct
40 Correct 265 ms 36336 KB Output is correct
41 Correct 11 ms 16000 KB Output is correct
42 Correct 12 ms 16128 KB Output is correct
43 Correct 17 ms 16768 KB Output is correct
44 Correct 18 ms 16896 KB Output is correct
45 Correct 267 ms 36332 KB Output is correct
46 Correct 263 ms 36332 KB Output is correct
47 Correct 271 ms 36568 KB Output is correct
48 Correct 266 ms 36332 KB Output is correct
49 Correct 262 ms 36332 KB Output is correct
50 Correct 260 ms 36332 KB Output is correct
51 Correct 263 ms 36332 KB Output is correct
52 Correct 260 ms 36368 KB Output is correct
53 Correct 273 ms 36260 KB Output is correct
54 Correct 263 ms 36208 KB Output is correct
55 Correct 260 ms 36332 KB Output is correct
56 Incorrect 10 ms 16000 KB Output isn't correct
57 Halted 0 ms 0 KB -