oj.uz

Submission #1070650

# Submission time Handle Problem Language Result Execution time Memory
1070650 2024-08-22T16:25:54 Z BF001 Making Friends on Joitter is Fun (JOI20_joitter2) C++17
100 / 100
 707 ms 68176 KB 
#include<bits/stdc++.h>
using namespace std;
 
#define N 100005
#define fi first
#define se second
#define int long long

typedef pair<int, int> ii; 

int n, m, res, siz[N], par[N];
set<int> child[N], adj[N], r_adj[N];
queue<ii> q; 

int find(int u){
    if (u == par[u]) return u;
    return par[u] = find(par[u]);
}

void addeg(int u, int v){
    adj[u].insert(v);
    r_adj[v].insert(u);
    if (adj[v].count(u)) q.push({u, v});
}

int sum(int u){
    return child[u].size() + adj[u].size() + r_adj[u].size();
}

void unin(int u, int v){
    u = find(u);
    v = find(v);
    if (u == v) return;
    res += child[u].size() * siz[v] + child[v].size() * siz[u];
    if (sum(u) < sum(v)) swap(u, v);
    siz[u] += siz[v];
    par[v] = u;
    for (auto x : child[v]){
        if (child[u].find(x) != child[u].end()) res -= siz[u];
        else child[u].insert(x);
    }
    adj[u].erase(v);
    r_adj[u].erase(v);
    adj[v].erase(u);
    r_adj[v].erase(u);
    for (auto x : adj[v]){
        r_adj[x].erase(v);
        addeg(u, x);
    }
    for (auto x : r_adj[v]){
        adj[x].erase(v);
        addeg(x, u);
    }
}

signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
 
    cin >> n >> m;
    for (int i = 1; i <= n; i++){
        siz[i] = 1;
        par[i] = i;
        child[i].insert(i);
    }

    for (int i = 1; i <= m; i++){
        int u, v;
        cin >> u >> v;
        v = find(v);
        if (find(u) != v && child[v].find(u) == child[v].end()){
            child[v].insert(u);
            res += siz[v];
            u = find(u);
            addeg(u, v);
            while (!q.empty()){
                int u = q.front().fi;
                int v = q.front().se;
                unin(u, v);
                q.pop();
            }
        }
        cout << res << "\n";
    }
 
    return 0;
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 14940 KB Output is correct
2 Correct 2 ms 14940 KB Output is correct
3 Correct 2 ms 14940 KB Output is correct
4 Correct 2 ms 15008 KB Output is correct
5 Correct 2 ms 14936 KB Output is correct
6 Correct 2 ms 14940 KB Output is correct
7 Correct 2 ms 15012 KB Output is correct
8 Correct 3 ms 14940 KB Output is correct
9 Correct 3 ms 14940 KB Output is correct
10 Correct 3 ms 14936 KB Output is correct
11 Correct 2 ms 14940 KB Output is correct
12 Correct 3 ms 15000 KB Output is correct
13 Correct 3 ms 14940 KB Output is correct
14 Correct 2 ms 14940 KB Output is correct
15 Correct 2 ms 15000 KB Output is correct
16 Correct 2 ms 14936 KB Output is correct
17 Correct 3 ms 14940 KB Output is correct
18 Correct 2 ms 14940 KB Output is correct
19 Correct 2 ms 14940 KB Output is correct
20 Correct 3 ms 14940 KB Output is correct
21 Correct 3 ms 14940 KB Output is correct
22 Correct 2 ms 14940 KB Output is correct
23 Correct 2 ms 14940 KB Output is correct
24 Correct 3 ms 14940 KB Output is correct
25 Correct 2 ms 14940 KB Output is correct
26 Correct 2 ms 14940 KB Output is correct
27 Correct 3 ms 14940 KB Output is correct
28 Correct 3 ms 14940 KB Output is correct
29 Correct 2 ms 14940 KB Output is correct
30 Correct 3 ms 14940 KB Output is correct
31 Correct 3 ms 14940 KB Output is correct
32 Correct 3 ms 14940 KB Output is correct
33 Correct 2 ms 14940 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 14940 KB Output is correct
2 Correct 2 ms 14940 KB Output is correct
3 Correct 2 ms 14940 KB Output is correct
4 Correct 2 ms 15008 KB Output is correct
5 Correct 2 ms 14936 KB Output is correct
6 Correct 2 ms 14940 KB Output is correct
7 Correct 2 ms 15012 KB Output is correct
8 Correct 3 ms 14940 KB Output is correct
9 Correct 3 ms 14940 KB Output is correct
10 Correct 3 ms 14936 KB Output is correct
11 Correct 2 ms 14940 KB Output is correct
12 Correct 3 ms 15000 KB Output is correct
13 Correct 3 ms 14940 KB Output is correct
14 Correct 2 ms 14940 KB Output is correct
15 Correct 2 ms 15000 KB Output is correct
16 Correct 2 ms 14936 KB Output is correct
17 Correct 3 ms 14940 KB Output is correct
18 Correct 2 ms 14940 KB Output is correct
19 Correct 2 ms 14940 KB Output is correct
20 Correct 3 ms 14940 KB Output is correct
21 Correct 3 ms 14940 KB Output is correct
22 Correct 2 ms 14940 KB Output is correct
23 Correct 2 ms 14940 KB Output is correct
24 Correct 3 ms 14940 KB Output is correct
25 Correct 2 ms 14940 KB Output is correct
26 Correct 2 ms 14940 KB Output is correct
27 Correct 3 ms 14940 KB Output is correct
28 Correct 3 ms 14940 KB Output is correct
29 Correct 2 ms 14940 KB Output is correct
30 Correct 3 ms 14940 KB Output is correct
31 Correct 3 ms 14940 KB Output is correct
32 Correct 3 ms 14940 KB Output is correct
33 Correct 2 ms 14940 KB Output is correct
34 Correct 5 ms 14940 KB Output is correct
35 Correct 57 ms 19240 KB Output is correct
36 Correct 78 ms 22168 KB Output is correct
37 Correct 73 ms 22352 KB Output is correct
38 Correct 70 ms 21840 KB Output is correct
39 Correct 8 ms 14940 KB Output is correct
40 Correct 8 ms 15192 KB Output is correct
41 Correct 12 ms 15192 KB Output is correct
42 Correct 8 ms 14940 KB Output is correct
43 Correct 9 ms 14856 KB Output is correct
44 Correct 9 ms 14936 KB Output is correct
45 Correct 8 ms 14744 KB Output is correct
46 Correct 8 ms 14940 KB Output is correct
47 Correct 10 ms 14940 KB Output is correct
48 Correct 10 ms 14940 KB Output is correct
49 Correct 14 ms 15708 KB Output is correct
50 Correct 72 ms 22480 KB Output is correct
51 Correct 9 ms 15060 KB Output is correct
52 Correct 69 ms 20556 KB Output is correct
53 Correct 13 ms 15708 KB Output is correct
54 Correct 71 ms 21480 KB Output is correct
55 Correct 10 ms 15196 KB Output is correct
56 Correct 9 ms 15364 KB Output is correct
57 Correct 8 ms 15312 KB Output is correct
58 Correct 9 ms 15196 KB Output is correct
59 Correct 9 ms 15212 KB Output is correct
60 Correct 52 ms 19188 KB Output is correct
61 Correct 10 ms 14936 KB Output is correct
62 Correct 72 ms 21580 KB Output is correct

Subtask #3
83.0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 14940 KB Output is correct
2 Correct 2 ms 14940 KB Output is correct
3 Correct 2 ms 14940 KB Output is correct
4 Correct 2 ms 15008 KB Output is correct
5 Correct 2 ms 14936 KB Output is correct
6 Correct 2 ms 14940 KB Output is correct
7 Correct 2 ms 15012 KB Output is correct
8 Correct 3 ms 14940 KB Output is correct
9 Correct 3 ms 14940 KB Output is correct
10 Correct 3 ms 14936 KB Output is correct
11 Correct 2 ms 14940 KB Output is correct
12 Correct 3 ms 15000 KB Output is correct
13 Correct 3 ms 14940 KB Output is correct
14 Correct 2 ms 14940 KB Output is correct
15 Correct 2 ms 15000 KB Output is correct
16 Correct 2 ms 14936 KB Output is correct
17 Correct 3 ms 14940 KB Output is correct
18 Correct 2 ms 14940 KB Output is correct
19 Correct 2 ms 14940 KB Output is correct
20 Correct 3 ms 14940 KB Output is correct
21 Correct 3 ms 14940 KB Output is correct
22 Correct 2 ms 14940 KB Output is correct
23 Correct 2 ms 14940 KB Output is correct
24 Correct 3 ms 14940 KB Output is correct
25 Correct 2 ms 14940 KB Output is correct
26 Correct 2 ms 14940 KB Output is correct
27 Correct 3 ms 14940 KB Output is correct
28 Correct 3 ms 14940 KB Output is correct
29 Correct 2 ms 14940 KB Output is correct
30 Correct 3 ms 14940 KB Output is correct
31 Correct 3 ms 14940 KB Output is correct
32 Correct 3 ms 14940 KB Output is correct
33 Correct 2 ms 14940 KB Output is correct
34 Correct 5 ms 14940 KB Output is correct
35 Correct 57 ms 19240 KB Output is correct
36 Correct 78 ms 22168 KB Output is correct
37 Correct 73 ms 22352 KB Output is correct
38 Correct 70 ms 21840 KB Output is correct
39 Correct 8 ms 14940 KB Output is correct
40 Correct 8 ms 15192 KB Output is correct
41 Correct 12 ms 15192 KB Output is correct
42 Correct 8 ms 14940 KB Output is correct
43 Correct 9 ms 14856 KB Output is correct
44 Correct 9 ms 14936 KB Output is correct
45 Correct 8 ms 14744 KB Output is correct
46 Correct 8 ms 14940 KB Output is correct
47 Correct 10 ms 14940 KB Output is correct
48 Correct 10 ms 14940 KB Output is correct
49 Correct 14 ms 15708 KB Output is correct
50 Correct 72 ms 22480 KB Output is correct
51 Correct 9 ms 15060 KB Output is correct
52 Correct 69 ms 20556 KB Output is correct
53 Correct 13 ms 15708 KB Output is correct
54 Correct 71 ms 21480 KB Output is correct
55 Correct 10 ms 15196 KB Output is correct
56 Correct 9 ms 15364 KB Output is correct
57 Correct 8 ms 15312 KB Output is correct
58 Correct 9 ms 15196 KB Output is correct
59 Correct 9 ms 15212 KB Output is correct
60 Correct 52 ms 19188 KB Output is correct
61 Correct 10 ms 14936 KB Output is correct
62 Correct 72 ms 21580 KB Output is correct
63 Correct 363 ms 66968 KB Output is correct
64 Correct 376 ms 67060 KB Output is correct
65 Correct 349 ms 66900 KB Output is correct
66 Correct 148 ms 33360 KB Output is correct
67 Correct 271 ms 60340 KB Output is correct
68 Correct 143 ms 33616 KB Output is correct
69 Correct 311 ms 34740 KB Output is correct
70 Correct 191 ms 33416 KB Output is correct
71 Correct 160 ms 33484 KB Output is correct
72 Correct 297 ms 44496 KB Output is correct
73 Correct 305 ms 46128 KB Output is correct
74 Correct 707 ms 68176 KB Output is correct
75 Correct 439 ms 40832 KB Output is correct
76 Correct 504 ms 53092 KB Output is correct
77 Correct 467 ms 53276 KB Output is correct
78 Correct 153 ms 37456 KB Output is correct
79 Correct 264 ms 41044 KB Output is correct
80 Correct 169 ms 36436 KB Output is correct
81 Correct 233 ms 39252 KB Output is correct
82 Correct 569 ms 54084 KB Output is correct
83 Correct 536 ms 54188 KB Output is correct
84 Correct 421 ms 52720 KB Output is correct
85 Correct 464 ms 52820 KB Output is correct
86 Correct 225 ms 66148 KB Output is correct
87 Correct 275 ms 68092 KB Output is correct
88 Correct 283 ms 45396 KB Output is correct
89 Correct 474 ms 51024 KB Output is correct