oj.uz

Submission #1108467

# Submission time Handle Problem Language Result Execution time Memory
1108467 2024-11-04T08:01:33 Z windowwife Making Friends on Joitter is Fun (JOI20_joitter2) C++14
100 / 100
 1157 ms 211196 KB 
#include<bits/stdc++.h>
#define ll long long
#define task ""
using namespace std;
const ll maxn = 1e6 + 2, LG = 20, blocksize = 550, inf = 1e18;
int n, m, a, b, par[maxn];
ll res = 0;
set<int> f[maxn], adj[maxn], radj[maxn];
vector<pair<int, int>> cur;
int find_set (int u)
{
    if (par[u] < 0) return u;
    return (par[u] = find_set(par[u]));
}
void union_set (int u, int v)
{
    u = find_set(u); v = find_set(v);
    if (u == v) return;
    if (f[u].size() + adj[u].size() + radj[u].size() < f[v].size() + adj[v].size() + radj[v].size()) swap(u, v);
    res -= 1LL*par[u]*f[v].size() + 1LL*par[v]*f[u].size();
    par[u] += par[v];
    par[v] = u;
    for (int i : f[v])
    {
        if (f[u].find(i) != f[u].end()) res += par[u];
        else f[u].insert(i);
    }
    f[v].clear();
    adj[u].erase(v); radj[u].erase(v);
    adj[v].erase(u); radj[v].erase(u);
    for (int i : adj[v])
    {
        adj[u].insert(i);
        radj[i].insert(u);
        if (radj[u].find(i) != radj[u].end()) cur.push_back({u, i});
    }
    for (int i : radj[v])
    {
        radj[u].insert(i);
        adj[i].insert(u);
        if (adj[u].find(i) != adj[u].end()) cur.push_back({u, i});
    }
}
int main()
{
    //freopen(task".INP", "r", stdin);
    //freopen(task".OUT", "w", stdout);
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cin >> n >> m;
    for (int i = 1; i <= n; i++)
    {
        par[i] = -1;
        f[i].insert(i);
    }
    while (m--)
    {
        cin >> a >> b;
        b = find_set(b);
        if (a == b || f[b].find(a) != f[b].end())
        {
            cout << res << '\n';
            continue;
        }
        res -= par[b];
        f[b].insert(a);
        a = find_set(a);
        adj[a].insert(b);
        radj[b].insert(a);
        if (radj[a].find(b) != radj[a].end()) cur.push_back({a, b});
        while (!cur.empty())
        {
            union_set(cur[0].first, cur[0].second);
            swap(cur[0], cur.back());
            cur.pop_back();
        }
        cout << res << '\n';
    }
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 142160 KB Output is correct
2 Correct 23 ms 142216 KB Output is correct
3 Correct 22 ms 142328 KB Output is correct
4 Correct 23 ms 142172 KB Output is correct
5 Correct 28 ms 142160 KB Output is correct
6 Correct 23 ms 142160 KB Output is correct
7 Correct 22 ms 142160 KB Output is correct
8 Correct 24 ms 142160 KB Output is correct
9 Correct 24 ms 142172 KB Output is correct
10 Correct 22 ms 142228 KB Output is correct
11 Correct 24 ms 142160 KB Output is correct
12 Correct 24 ms 142160 KB Output is correct
13 Correct 23 ms 142160 KB Output is correct
14 Correct 24 ms 142160 KB Output is correct
15 Correct 25 ms 142160 KB Output is correct
16 Correct 25 ms 142172 KB Output is correct
17 Correct 23 ms 142160 KB Output is correct
18 Correct 25 ms 142160 KB Output is correct
19 Correct 24 ms 142160 KB Output is correct
20 Correct 24 ms 142160 KB Output is correct
21 Correct 25 ms 142160 KB Output is correct
22 Correct 24 ms 142160 KB Output is correct
23 Correct 24 ms 142112 KB Output is correct
24 Correct 26 ms 142160 KB Output is correct
25 Correct 25 ms 142236 KB Output is correct
26 Correct 25 ms 142160 KB Output is correct
27 Correct 25 ms 142160 KB Output is correct
28 Correct 24 ms 142160 KB Output is correct
29 Correct 22 ms 142160 KB Output is correct
30 Correct 22 ms 142172 KB Output is correct
31 Correct 22 ms 142160 KB Output is correct
32 Correct 22 ms 142164 KB Output is correct
33 Correct 24 ms 142160 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 142160 KB Output is correct
2 Correct 23 ms 142216 KB Output is correct
3 Correct 22 ms 142328 KB Output is correct
4 Correct 23 ms 142172 KB Output is correct
5 Correct 28 ms 142160 KB Output is correct
6 Correct 23 ms 142160 KB Output is correct
7 Correct 22 ms 142160 KB Output is correct
8 Correct 24 ms 142160 KB Output is correct
9 Correct 24 ms 142172 KB Output is correct
10 Correct 22 ms 142228 KB Output is correct
11 Correct 24 ms 142160 KB Output is correct
12 Correct 24 ms 142160 KB Output is correct
13 Correct 23 ms 142160 KB Output is correct
14 Correct 24 ms 142160 KB Output is correct
15 Correct 25 ms 142160 KB Output is correct
16 Correct 25 ms 142172 KB Output is correct
17 Correct 23 ms 142160 KB Output is correct
18 Correct 25 ms 142160 KB Output is correct
19 Correct 24 ms 142160 KB Output is correct
20 Correct 24 ms 142160 KB Output is correct
21 Correct 25 ms 142160 KB Output is correct
22 Correct 24 ms 142160 KB Output is correct
23 Correct 24 ms 142112 KB Output is correct
24 Correct 26 ms 142160 KB Output is correct
25 Correct 25 ms 142236 KB Output is correct
26 Correct 25 ms 142160 KB Output is correct
27 Correct 25 ms 142160 KB Output is correct
28 Correct 24 ms 142160 KB Output is correct
29 Correct 22 ms 142160 KB Output is correct
30 Correct 22 ms 142172 KB Output is correct
31 Correct 22 ms 142160 KB Output is correct
32 Correct 22 ms 142164 KB Output is correct
33 Correct 24 ms 142160 KB Output is correct
34 Correct 23 ms 142180 KB Output is correct
35 Correct 90 ms 148212 KB Output is correct
36 Correct 117 ms 151060 KB Output is correct
37 Correct 117 ms 151236 KB Output is correct
38 Correct 122 ms 150724 KB Output is correct
39 Correct 24 ms 142160 KB Output is correct
40 Correct 27 ms 142928 KB Output is correct
41 Correct 26 ms 142672 KB Output is correct
42 Correct 23 ms 142160 KB Output is correct
43 Correct 24 ms 142408 KB Output is correct
44 Correct 25 ms 142532 KB Output is correct
45 Correct 25 ms 142160 KB Output is correct
46 Correct 25 ms 142328 KB Output is correct
47 Correct 25 ms 142604 KB Output is correct
48 Correct 29 ms 142416 KB Output is correct
49 Correct 36 ms 143688 KB Output is correct
50 Correct 130 ms 151364 KB Output is correct
51 Correct 36 ms 142672 KB Output is correct
52 Correct 151 ms 149556 KB Output is correct
53 Correct 34 ms 143440 KB Output is correct
54 Correct 115 ms 150212 KB Output is correct
55 Correct 32 ms 142928 KB Output is correct
56 Correct 30 ms 142920 KB Output is correct
57 Correct 29 ms 142928 KB Output is correct
58 Correct 29 ms 142920 KB Output is correct
59 Correct 26 ms 142424 KB Output is correct
60 Correct 93 ms 147272 KB Output is correct
61 Correct 28 ms 142552 KB Output is correct
62 Correct 121 ms 150724 KB Output is correct

Subtask #3
83.0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 142160 KB Output is correct
2 Correct 23 ms 142216 KB Output is correct
3 Correct 22 ms 142328 KB Output is correct
4 Correct 23 ms 142172 KB Output is correct
5 Correct 28 ms 142160 KB Output is correct
6 Correct 23 ms 142160 KB Output is correct
7 Correct 22 ms 142160 KB Output is correct
8 Correct 24 ms 142160 KB Output is correct
9 Correct 24 ms 142172 KB Output is correct
10 Correct 22 ms 142228 KB Output is correct
11 Correct 24 ms 142160 KB Output is correct
12 Correct 24 ms 142160 KB Output is correct
13 Correct 23 ms 142160 KB Output is correct
14 Correct 24 ms 142160 KB Output is correct
15 Correct 25 ms 142160 KB Output is correct
16 Correct 25 ms 142172 KB Output is correct
17 Correct 23 ms 142160 KB Output is correct
18 Correct 25 ms 142160 KB Output is correct
19 Correct 24 ms 142160 KB Output is correct
20 Correct 24 ms 142160 KB Output is correct
21 Correct 25 ms 142160 KB Output is correct
22 Correct 24 ms 142160 KB Output is correct
23 Correct 24 ms 142112 KB Output is correct
24 Correct 26 ms 142160 KB Output is correct
25 Correct 25 ms 142236 KB Output is correct
26 Correct 25 ms 142160 KB Output is correct
27 Correct 25 ms 142160 KB Output is correct
28 Correct 24 ms 142160 KB Output is correct
29 Correct 22 ms 142160 KB Output is correct
30 Correct 22 ms 142172 KB Output is correct
31 Correct 22 ms 142160 KB Output is correct
32 Correct 22 ms 142164 KB Output is correct
33 Correct 24 ms 142160 KB Output is correct
34 Correct 23 ms 142180 KB Output is correct
35 Correct 90 ms 148212 KB Output is correct
36 Correct 117 ms 151060 KB Output is correct
37 Correct 117 ms 151236 KB Output is correct
38 Correct 122 ms 150724 KB Output is correct
39 Correct 24 ms 142160 KB Output is correct
40 Correct 27 ms 142928 KB Output is correct
41 Correct 26 ms 142672 KB Output is correct
42 Correct 23 ms 142160 KB Output is correct
43 Correct 24 ms 142408 KB Output is correct
44 Correct 25 ms 142532 KB Output is correct
45 Correct 25 ms 142160 KB Output is correct
46 Correct 25 ms 142328 KB Output is correct
47 Correct 25 ms 142604 KB Output is correct
48 Correct 29 ms 142416 KB Output is correct
49 Correct 36 ms 143688 KB Output is correct
50 Correct 130 ms 151364 KB Output is correct
51 Correct 36 ms 142672 KB Output is correct
52 Correct 151 ms 149556 KB Output is correct
53 Correct 34 ms 143440 KB Output is correct
54 Correct 115 ms 150212 KB Output is correct
55 Correct 32 ms 142928 KB Output is correct
56 Correct 30 ms 142920 KB Output is correct
57 Correct 29 ms 142928 KB Output is correct
58 Correct 29 ms 142920 KB Output is correct
59 Correct 26 ms 142424 KB Output is correct
60 Correct 93 ms 147272 KB Output is correct
61 Correct 28 ms 142552 KB Output is correct
62 Correct 121 ms 150724 KB Output is correct
63 Correct 457 ms 194632 KB Output is correct
64 Correct 422 ms 194592 KB Output is correct
65 Correct 398 ms 194632 KB Output is correct
66 Correct 175 ms 151148 KB Output is correct
67 Correct 539 ms 189264 KB Output is correct
68 Correct 160 ms 151128 KB Output is correct
69 Correct 298 ms 158232 KB Output is correct
70 Correct 188 ms 151112 KB Output is correct
71 Correct 185 ms 151112 KB Output is correct
72 Correct 368 ms 162808 KB Output is correct
73 Correct 359 ms 164004 KB Output is correct
74 Correct 1157 ms 211196 KB Output is correct
75 Correct 525 ms 166216 KB Output is correct
76 Correct 798 ms 181676 KB Output is correct
77 Correct 919 ms 181860 KB Output is correct
78 Correct 239 ms 161732 KB Output is correct
79 Correct 395 ms 165020 KB Output is correct
80 Correct 241 ms 161620 KB Output is correct
81 Correct 465 ms 164932 KB Output is correct
82 Correct 801 ms 182604 KB Output is correct
83 Correct 768 ms 182704 KB Output is correct
84 Correct 865 ms 184004 KB Output is correct
85 Correct 783 ms 183916 KB Output is correct
86 Correct 268 ms 152136 KB Output is correct
87 Correct 308 ms 154176 KB Output is correct
88 Correct 464 ms 163400 KB Output is correct
89 Correct 788 ms 179516 KB Output is correct