oj.uz

Submission #797020

# Submission time Handle Problem Language Result Execution time Memory
797020 2023-07-29T04:42:15 Z vjudge1 Making Friends on Joitter is Fun (JOI20_joitter2) C++17
100 / 100
 1863 ms 110160 KB 
#include <bits/stdc++.h>

#define fi first
#define se second

const int N = 100100;
const int mod = 1e9 + 7;

using namespace std;

long long res;

int n;
int p[N];
int sz[N];
set<int> S[N];
set<int> A[N], B[N];
queue<pair<int, int>> q;

int get(int x) {
    return p[x] == x ? x : p[x] = get(p[x]);
}

void upd(int X, int Y) {
    A[X].insert(Y);
    B[Y].insert(X);
    if (A[Y].find(X) != A[Y].end()) {
        q.push({X, Y});
    }
}

void solve(int X, int Y)
{
    X = get(X);
    Y = get(Y);
    if (X == Y) {
        return;
    }
    if (S[X].size() < S[Y].size()) {
        swap(X, Y);
    }
    res += 1ll * sz[X] * S[Y].size() + 1ll * sz[Y] * S[X].size();
    p[Y] = X;
    sz[X] += sz[Y];
    for (int z: S[Y]) {
        if (S[X].find(z) == S[X].end()) {
            S[X].insert(z);
        } else {
            res -= sz[X];
        }
    }
    A[X].erase(Y);
    B[X].erase(Y);
    A[Y].erase(X);
    B[Y].erase(X);
    for (int z: A[Y]) {
        upd(X, z);
    }
    for (int z: B[Y]) {
        upd(z, X);
    }
}

int main() {
    #ifdef zxc
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #endif
    ios_base::sync_with_stdio(0);

    int m;
    cin >> n >> m;
    for (int i = 1; i <= n; i++) {
        p[i] = i;
        sz[i] = 1;
        S[i].insert(i);
    }

    for (int i = 1; i <= m; i++) {
        int x, y;
        cin >> x >> y;
        int X = get(x);
        int Y = get(y);
        if (X != Y && S[Y].find(x) == S[Y].end()) {
            res += sz[Y];
            S[Y].insert(x);
            upd(X, Y);
            while (!q.empty()) {
                solve(q.front().fi, q.front().se);
                q.pop();
            }
        }
        cout << res << "\n";
    }
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14352 KB Output is correct
2 Correct 7 ms 14432 KB Output is correct
3 Correct 8 ms 14428 KB Output is correct
4 Correct 8 ms 14420 KB Output is correct
5 Correct 7 ms 14420 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 10 ms 14420 KB Output is correct
8 Correct 10 ms 14420 KB Output is correct
9 Correct 10 ms 14464 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 7 ms 14384 KB Output is correct
12 Correct 7 ms 14420 KB Output is correct
13 Correct 7 ms 14420 KB Output is correct
14 Correct 7 ms 14420 KB Output is correct
15 Correct 7 ms 14420 KB Output is correct
16 Correct 7 ms 14324 KB Output is correct
17 Correct 7 ms 14432 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct
19 Correct 8 ms 14420 KB Output is correct
20 Correct 8 ms 14432 KB Output is correct
21 Correct 9 ms 14420 KB Output is correct
22 Correct 8 ms 14420 KB Output is correct
23 Correct 8 ms 14420 KB Output is correct
24 Correct 8 ms 14356 KB Output is correct
25 Correct 9 ms 14420 KB Output is correct
26 Correct 7 ms 14420 KB Output is correct
27 Correct 7 ms 14428 KB Output is correct
28 Correct 7 ms 14420 KB Output is correct
29 Correct 7 ms 14420 KB Output is correct
30 Correct 7 ms 14420 KB Output is correct
31 Correct 11 ms 14420 KB Output is correct
32 Correct 7 ms 14420 KB Output is correct
33 Correct 9 ms 14420 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14352 KB Output is correct
2 Correct 7 ms 14432 KB Output is correct
3 Correct 8 ms 14428 KB Output is correct
4 Correct 8 ms 14420 KB Output is correct
5 Correct 7 ms 14420 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 10 ms 14420 KB Output is correct
8 Correct 10 ms 14420 KB Output is correct
9 Correct 10 ms 14464 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 7 ms 14384 KB Output is correct
12 Correct 7 ms 14420 KB Output is correct
13 Correct 7 ms 14420 KB Output is correct
14 Correct 7 ms 14420 KB Output is correct
15 Correct 7 ms 14420 KB Output is correct
16 Correct 7 ms 14324 KB Output is correct
17 Correct 7 ms 14432 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct
19 Correct 8 ms 14420 KB Output is correct
20 Correct 8 ms 14432 KB Output is correct
21 Correct 9 ms 14420 KB Output is correct
22 Correct 8 ms 14420 KB Output is correct
23 Correct 8 ms 14420 KB Output is correct
24 Correct 8 ms 14356 KB Output is correct
25 Correct 9 ms 14420 KB Output is correct
26 Correct 7 ms 14420 KB Output is correct
27 Correct 7 ms 14428 KB Output is correct
28 Correct 7 ms 14420 KB Output is correct
29 Correct 7 ms 14420 KB Output is correct
30 Correct 7 ms 14420 KB Output is correct
31 Correct 11 ms 14420 KB Output is correct
32 Correct 7 ms 14420 KB Output is correct
33 Correct 9 ms 14420 KB Output is correct
34 Correct 19 ms 14572 KB Output is correct
35 Correct 382 ms 20408 KB Output is correct
36 Correct 390 ms 23652 KB Output is correct
37 Correct 405 ms 23640 KB Output is correct
38 Correct 382 ms 23244 KB Output is correct
39 Correct 14 ms 14700 KB Output is correct
40 Correct 16 ms 15700 KB Output is correct
41 Correct 20 ms 15668 KB Output is correct
42 Correct 17 ms 14804 KB Output is correct
43 Correct 14 ms 14804 KB Output is correct
44 Correct 14 ms 14776 KB Output is correct
45 Correct 14 ms 14700 KB Output is correct
46 Correct 13 ms 14676 KB Output is correct
47 Correct 15 ms 15188 KB Output is correct
48 Correct 15 ms 15220 KB Output is correct
49 Correct 27 ms 16244 KB Output is correct
50 Correct 388 ms 23812 KB Output is correct
51 Correct 30 ms 15316 KB Output is correct
52 Correct 375 ms 21988 KB Output is correct
53 Correct 27 ms 15956 KB Output is correct
54 Correct 389 ms 22852 KB Output is correct
55 Correct 16 ms 15444 KB Output is correct
56 Correct 16 ms 15340 KB Output is correct
57 Correct 16 ms 15392 KB Output is correct
58 Correct 16 ms 15472 KB Output is correct
59 Correct 14 ms 15112 KB Output is correct
60 Correct 359 ms 20132 KB Output is correct
61 Correct 16 ms 15212 KB Output is correct
62 Correct 381 ms 23032 KB Output is correct

Subtask #3
83.0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14352 KB Output is correct
2 Correct 7 ms 14432 KB Output is correct
3 Correct 8 ms 14428 KB Output is correct
4 Correct 8 ms 14420 KB Output is correct
5 Correct 7 ms 14420 KB Output is correct
6 Correct 7 ms 14420 KB Output is correct
7 Correct 10 ms 14420 KB Output is correct
8 Correct 10 ms 14420 KB Output is correct
9 Correct 10 ms 14464 KB Output is correct
10 Correct 7 ms 14420 KB Output is correct
11 Correct 7 ms 14384 KB Output is correct
12 Correct 7 ms 14420 KB Output is correct
13 Correct 7 ms 14420 KB Output is correct
14 Correct 7 ms 14420 KB Output is correct
15 Correct 7 ms 14420 KB Output is correct
16 Correct 7 ms 14324 KB Output is correct
17 Correct 7 ms 14432 KB Output is correct
18 Correct 7 ms 14420 KB Output is correct
19 Correct 8 ms 14420 KB Output is correct
20 Correct 8 ms 14432 KB Output is correct
21 Correct 9 ms 14420 KB Output is correct
22 Correct 8 ms 14420 KB Output is correct
23 Correct 8 ms 14420 KB Output is correct
24 Correct 8 ms 14356 KB Output is correct
25 Correct 9 ms 14420 KB Output is correct
26 Correct 7 ms 14420 KB Output is correct
27 Correct 7 ms 14428 KB Output is correct
28 Correct 7 ms 14420 KB Output is correct
29 Correct 7 ms 14420 KB Output is correct
30 Correct 7 ms 14420 KB Output is correct
31 Correct 11 ms 14420 KB Output is correct
32 Correct 7 ms 14420 KB Output is correct
33 Correct 9 ms 14420 KB Output is correct
34 Correct 19 ms 14572 KB Output is correct
35 Correct 382 ms 20408 KB Output is correct
36 Correct 390 ms 23652 KB Output is correct
37 Correct 405 ms 23640 KB Output is correct
38 Correct 382 ms 23244 KB Output is correct
39 Correct 14 ms 14700 KB Output is correct
40 Correct 16 ms 15700 KB Output is correct
41 Correct 20 ms 15668 KB Output is correct
42 Correct 17 ms 14804 KB Output is correct
43 Correct 14 ms 14804 KB Output is correct
44 Correct 14 ms 14776 KB Output is correct
45 Correct 14 ms 14700 KB Output is correct
46 Correct 13 ms 14676 KB Output is correct
47 Correct 15 ms 15188 KB Output is correct
48 Correct 15 ms 15220 KB Output is correct
49 Correct 27 ms 16244 KB Output is correct
50 Correct 388 ms 23812 KB Output is correct
51 Correct 30 ms 15316 KB Output is correct
52 Correct 375 ms 21988 KB Output is correct
53 Correct 27 ms 15956 KB Output is correct
54 Correct 389 ms 22852 KB Output is correct
55 Correct 16 ms 15444 KB Output is correct
56 Correct 16 ms 15340 KB Output is correct
57 Correct 16 ms 15392 KB Output is correct
58 Correct 16 ms 15472 KB Output is correct
59 Correct 14 ms 15112 KB Output is correct
60 Correct 359 ms 20132 KB Output is correct
61 Correct 16 ms 15212 KB Output is correct
62 Correct 381 ms 23032 KB Output is correct
63 Correct 817 ms 67640 KB Output is correct
64 Correct 815 ms 67512 KB Output is correct
65 Correct 818 ms 67496 KB Output is correct
66 Correct 401 ms 33692 KB Output is correct
67 Correct 922 ms 100656 KB Output is correct
68 Correct 385 ms 33612 KB Output is correct
69 Correct 553 ms 34780 KB Output is correct
70 Correct 409 ms 33580 KB Output is correct
71 Correct 412 ms 33604 KB Output is correct
72 Correct 740 ms 56256 KB Output is correct
73 Correct 754 ms 59304 KB Output is correct
74 Correct 1863 ms 110160 KB Output is correct
75 Correct 874 ms 45996 KB Output is correct
76 Correct 1201 ms 71792 KB Output is correct
77 Correct 1225 ms 72144 KB Output is correct
78 Correct 426 ms 45528 KB Output is correct
79 Correct 754 ms 51272 KB Output is correct
80 Correct 401 ms 39608 KB Output is correct
81 Correct 665 ms 43792 KB Output is correct
82 Correct 1052 ms 65824 KB Output is correct
83 Correct 1055 ms 65832 KB Output is correct
84 Correct 947 ms 68792 KB Output is correct
85 Correct 910 ms 68824 KB Output is correct
86 Correct 488 ms 66372 KB Output is correct
87 Correct 630 ms 68660 KB Output is correct
88 Correct 748 ms 57780 KB Output is correct
89 Correct 1176 ms 69244 KB Output is correct