oj.uz

Submission #331996

# Submission time Handle Problem Language Result Execution time Memory
331996 2020-12-01T04:53:49 Z 12tqian Making Friends on Joitter is Fun (JOI20_joitter2) C++17
100 / 100
 1461 ms 44484 KB 
#include <bits/stdc++.h>

int main() {
    using namespace std;
    typedef long long ll;
    ios_base::sync_with_stdio(0);
    int n, m;
    cin >> n >> m;
    ll ans = 0;
    vector<int> label(n);
    iota(label.begin(), label.end(), 0);
    vector<int> size(n, 1);    
    vector<set<int>> in(n);
    vector<set<pair<int, int>>> out(n);
    function<int(int)> get = [&](int u) -> int {
        if (label[u] == u) 
            return u;
        return label[u] = get(label[u]);
    };
    function<void(int, int)> direct = [&](int u, int v) {
        int x = get(u);
        int y = get(v);
        if (x == y)
            return;
        auto it = out[y].lower_bound({x, 0});
        if (it != out[y].end() && (*it).first == x) {
            if (in[x].size() + out[x].size() < in[y].size() + out[y].size()) 
                swap(x, y);
            vector<pair<int, int>> vout;
            for (auto& e : out[y]) {
                ans -= size[e.first];
                in[e.first].erase(e.second);
                if (e.first != x) 
                    vout.push_back(e);
            }
            out[y].clear();
            ans += 1LL * size[y] * (2 * size[x] + in[x].size() - in[y].size());
            vector<int> vin;
            for (auto& e : in[y]) {
                int j = get(e);
                out[j].erase({y, e});
                if (j != x)
                    vin.push_back(e); 
            }
            in[y].clear();
            label[y] = x;
            size[x] += size[y];
            for (int& e : vin)
                direct(e, x);
            for (auto& e : vout) 
                direct(e.second, e.first);
        } else if (!in[y].count(u)) {
            ans += size[y];
            in[y].insert(u);
            out[x].insert({y, u});
        }
    };
    for (int i = 0; i < m; i++) {
        int u, v;
        cin >> u >> v;
        --u, --v;
        direct(u, v);
        cout << ans << '\n';
    }
    return 0;
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 7 ms 364 KB Output is correct
8 Correct 7 ms 364 KB Output is correct
9 Correct 7 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 2 ms 364 KB Output is correct
21 Correct 8 ms 364 KB Output is correct
22 Correct 2 ms 364 KB Output is correct
23 Correct 3 ms 364 KB Output is correct
24 Correct 3 ms 364 KB Output is correct
25 Correct 7 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 7 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 6 ms 384 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 7 ms 364 KB Output is correct
8 Correct 7 ms 364 KB Output is correct
9 Correct 7 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 2 ms 364 KB Output is correct
21 Correct 8 ms 364 KB Output is correct
22 Correct 2 ms 364 KB Output is correct
23 Correct 3 ms 364 KB Output is correct
24 Correct 3 ms 364 KB Output is correct
25 Correct 7 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 7 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 6 ms 384 KB Output is correct
34 Correct 25 ms 492 KB Output is correct
35 Correct 749 ms 6032 KB Output is correct
36 Correct 767 ms 8192 KB Output is correct
37 Correct 794 ms 8172 KB Output is correct
38 Correct 768 ms 8044 KB Output is correct
39 Correct 11 ms 892 KB Output is correct
40 Correct 12 ms 748 KB Output is correct
41 Correct 12 ms 748 KB Output is correct
42 Correct 12 ms 620 KB Output is correct
43 Correct 13 ms 748 KB Output is correct
44 Correct 12 ms 748 KB Output is correct
45 Correct 11 ms 640 KB Output is correct
46 Correct 12 ms 620 KB Output is correct
47 Correct 12 ms 748 KB Output is correct
48 Correct 14 ms 748 KB Output is correct
49 Correct 32 ms 1260 KB Output is correct
50 Correct 772 ms 8428 KB Output is correct
51 Correct 29 ms 876 KB Output is correct
52 Correct 757 ms 7148 KB Output is correct
53 Correct 32 ms 1260 KB Output is correct
54 Correct 756 ms 7788 KB Output is correct
55 Correct 14 ms 1004 KB Output is correct
56 Correct 14 ms 1004 KB Output is correct
57 Correct 18 ms 1004 KB Output is correct
58 Correct 14 ms 1152 KB Output is correct
59 Correct 12 ms 620 KB Output is correct
60 Correct 768 ms 5612 KB Output is correct
61 Correct 14 ms 748 KB Output is correct
62 Correct 766 ms 8172 KB Output is correct

Subtask #3
83.0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 7 ms 364 KB Output is correct
8 Correct 7 ms 364 KB Output is correct
9 Correct 7 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 2 ms 364 KB Output is correct
21 Correct 8 ms 364 KB Output is correct
22 Correct 2 ms 364 KB Output is correct
23 Correct 3 ms 364 KB Output is correct
24 Correct 3 ms 364 KB Output is correct
25 Correct 7 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 7 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 6 ms 384 KB Output is correct
34 Correct 25 ms 492 KB Output is correct
35 Correct 749 ms 6032 KB Output is correct
36 Correct 767 ms 8192 KB Output is correct
37 Correct 794 ms 8172 KB Output is correct
38 Correct 768 ms 8044 KB Output is correct
39 Correct 11 ms 892 KB Output is correct
40 Correct 12 ms 748 KB Output is correct
41 Correct 12 ms 748 KB Output is correct
42 Correct 12 ms 620 KB Output is correct
43 Correct 13 ms 748 KB Output is correct
44 Correct 12 ms 748 KB Output is correct
45 Correct 11 ms 640 KB Output is correct
46 Correct 12 ms 620 KB Output is correct
47 Correct 12 ms 748 KB Output is correct
48 Correct 14 ms 748 KB Output is correct
49 Correct 32 ms 1260 KB Output is correct
50 Correct 772 ms 8428 KB Output is correct
51 Correct 29 ms 876 KB Output is correct
52 Correct 757 ms 7148 KB Output is correct
53 Correct 32 ms 1260 KB Output is correct
54 Correct 756 ms 7788 KB Output is correct
55 Correct 14 ms 1004 KB Output is correct
56 Correct 14 ms 1004 KB Output is correct
57 Correct 18 ms 1004 KB Output is correct
58 Correct 14 ms 1152 KB Output is correct
59 Correct 12 ms 620 KB Output is correct
60 Correct 768 ms 5612 KB Output is correct
61 Correct 14 ms 748 KB Output is correct
62 Correct 766 ms 8172 KB Output is correct
63 Correct 1107 ms 44484 KB Output is correct
64 Correct 1115 ms 44248 KB Output is correct
65 Correct 1130 ms 44224 KB Output is correct
66 Correct 554 ms 15084 KB Output is correct
67 Correct 684 ms 19052 KB Output is correct
68 Correct 553 ms 15084 KB Output is correct
69 Correct 762 ms 19564 KB Output is correct
70 Correct 602 ms 15216 KB Output is correct
71 Correct 593 ms 14956 KB Output is correct
72 Correct 709 ms 19024 KB Output is correct
73 Correct 716 ms 19052 KB Output is correct
74 Correct 1461 ms 28396 KB Output is correct
75 Correct 1187 ms 24428 KB Output is correct
76 Correct 1242 ms 27244 KB Output is correct
77 Correct 1246 ms 27500 KB Output is correct
78 Correct 568 ms 18704 KB Output is correct
79 Correct 1016 ms 22380 KB Output is correct
80 Correct 548 ms 18660 KB Output is correct
81 Correct 983 ms 21868 KB Output is correct
82 Correct 956 ms 33100 KB Output is correct
83 Correct 942 ms 33004 KB Output is correct
84 Correct 896 ms 33320 KB Output is correct
85 Correct 886 ms 33388 KB Output is correct
86 Correct 564 ms 14372 KB Output is correct
87 Correct 821 ms 16388 KB Output is correct
88 Correct 691 ms 19052 KB Output is correct
89 Correct 1232 ms 26732 KB Output is correct