oj.uz

Submission #874225

# Submission time Handle Problem Language Result Execution time Memory
874225 2023-11-16T13:01:22 Z 406 Making Friends on Joitter is Fun (JOI20_joitter2) C++17
100 / 100
 920 ms 83136 KB 
//besmellah
#include <bits/stdc++.h>
#define int long long
#define FOR(i, a, b) for (int i = (a); i < (b); ++i)
using namespace std;
using ar = array<int, 2>;

const int N = 3e5 + 5;
const long long INF = 1ll << 60;

int ans = 0;

namespace dsu {
        int dpr[N];
        set<array<int, 2>> in[N], out[N];
        //sz[v] => sum of in[v].second
        void init() {
                memset(dpr, -1, sizeof dpr);
        }
        int gpr(int x) {
                return dpr[x] < 0 ? x : dpr[x] = gpr(dpr[x]);
        }
        bool ise(int v, int u) {//u <- v
                auto it = in[u].lower_bound({v, -1});
                return it != in[u].end() && (*it)[0] == v;
        }
        void merge(int u, int v) {
                u = gpr(u), v = gpr(v);
                if (u == v) return;
                if (in[u].size() + out[u].size() > in[v].size() + out[v].size()) swap(u, v);

                auto it = in[u].lower_bound({v, -1});
                while (it != in[u].end() && (*it)[0] == v) {
                        ans -= -dpr[u];
                        out[v].erase({u, (*it)[1]});
                        in[u].erase(it);
                        it = in[u].lower_bound({v, -1});
                }
                it = in[v].lower_bound({u, -1});
                while (it != in[v].end() && (*it)[0] == u) {
                        ans -= -dpr[v];
                        out[u].erase({v, (*it)[1]});
                        in[v].erase(it);
                        it = in[v].lower_bound({u, -1});
                }
                ans += dpr[u] * dpr[v] * 2ll;

                vector<int> q;

                int only_v = in[v].size();
                for (auto [rt, x]: in[u]) only_v -= in[v].count({rt, x});
                ans += -dpr[u] * only_v;
                for (auto [rt, x]: in[u]) if (!in[v].count({rt, x}))
                        ans += -dpr[v];

                for (auto [rt, x]: in[u]) {
                        assert(rt != v);
                        in[v].insert({rt, x});
                        out[rt].erase({u, x});
                        out[rt].insert({v, x});
                        if (ise(v, rt) && ise(rt, v)) q.push_back(rt);
                }
                for (auto [rt, x]: out[u]) {
                        assert(rt != v);
                        out[v].insert({rt, x});
                        in[rt].erase({u, x});
                        in[rt].insert({v, x});
                        if (ise(v, rt) && ise(rt, v)) q.push_back(rt);
                }
                in[u].clear(), out[u].clear();

                dpr[v] += dpr[u];
                dpr[u] = v;
                for (auto x: q) merge(x, v);
        }
        void E(int u, int v) {
                int tu = u;
                u = gpr(u), v = gpr(v);
                if (u == v || in[v].count({u, tu})) return;
                in[v].insert({u, tu});
                out[u].insert({v, tu});
                ans += -dpr[v];
                if (ise(u, v) && ise(v, u)) {
                        merge(u, v);
                }
        }
}

int n, m;

signed main() {
        ios::sync_with_stdio(false);
        cin.tie(nullptr); 
        dsu::init();
        cin >> n >> m;
        FOR(i, 0, m) {
                int u, v;
                cin >> u >> v;
                --u, --v;
                dsu::E(u, v);
                cout << ans << '\n';
        }
        return 0;
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 30812 KB Output is correct
2 Correct 15 ms 30812 KB Output is correct
3 Correct 20 ms 30812 KB Output is correct
4 Correct 16 ms 30744 KB Output is correct
5 Correct 19 ms 30812 KB Output is correct
6 Correct 16 ms 30812 KB Output is correct
7 Correct 16 ms 30812 KB Output is correct
8 Correct 20 ms 30812 KB Output is correct
9 Correct 21 ms 30960 KB Output is correct
10 Correct 15 ms 30832 KB Output is correct
11 Correct 21 ms 30812 KB Output is correct
12 Correct 19 ms 30812 KB Output is correct
13 Correct 20 ms 30996 KB Output is correct
14 Correct 16 ms 30812 KB Output is correct
15 Correct 19 ms 30812 KB Output is correct
16 Correct 19 ms 30984 KB Output is correct
17 Correct 18 ms 30812 KB Output is correct
18 Correct 24 ms 30812 KB Output is correct
19 Correct 19 ms 30812 KB Output is correct
20 Correct 17 ms 30812 KB Output is correct
21 Correct 16 ms 30812 KB Output is correct
22 Correct 16 ms 30812 KB Output is correct
23 Correct 18 ms 30812 KB Output is correct
24 Correct 20 ms 30816 KB Output is correct
25 Correct 16 ms 30812 KB Output is correct
26 Correct 16 ms 30812 KB Output is correct
27 Correct 16 ms 30812 KB Output is correct
28 Correct 19 ms 30812 KB Output is correct
29 Correct 15 ms 30812 KB Output is correct
30 Correct 17 ms 30812 KB Output is correct
31 Correct 19 ms 30812 KB Output is correct
32 Correct 16 ms 30812 KB Output is correct
33 Correct 24 ms 30812 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 30812 KB Output is correct
2 Correct 15 ms 30812 KB Output is correct
3 Correct 20 ms 30812 KB Output is correct
4 Correct 16 ms 30744 KB Output is correct
5 Correct 19 ms 30812 KB Output is correct
6 Correct 16 ms 30812 KB Output is correct
7 Correct 16 ms 30812 KB Output is correct
8 Correct 20 ms 30812 KB Output is correct
9 Correct 21 ms 30960 KB Output is correct
10 Correct 15 ms 30832 KB Output is correct
11 Correct 21 ms 30812 KB Output is correct
12 Correct 19 ms 30812 KB Output is correct
13 Correct 20 ms 30996 KB Output is correct
14 Correct 16 ms 30812 KB Output is correct
15 Correct 19 ms 30812 KB Output is correct
16 Correct 19 ms 30984 KB Output is correct
17 Correct 18 ms 30812 KB Output is correct
18 Correct 24 ms 30812 KB Output is correct
19 Correct 19 ms 30812 KB Output is correct
20 Correct 17 ms 30812 KB Output is correct
21 Correct 16 ms 30812 KB Output is correct
22 Correct 16 ms 30812 KB Output is correct
23 Correct 18 ms 30812 KB Output is correct
24 Correct 20 ms 30816 KB Output is correct
25 Correct 16 ms 30812 KB Output is correct
26 Correct 16 ms 30812 KB Output is correct
27 Correct 16 ms 30812 KB Output is correct
28 Correct 19 ms 30812 KB Output is correct
29 Correct 15 ms 30812 KB Output is correct
30 Correct 17 ms 30812 KB Output is correct
31 Correct 19 ms 30812 KB Output is correct
32 Correct 16 ms 30812 KB Output is correct
33 Correct 24 ms 30812 KB Output is correct
34 Correct 21 ms 31068 KB Output is correct
35 Correct 113 ms 36668 KB Output is correct
36 Correct 135 ms 39228 KB Output is correct
37 Correct 135 ms 39484 KB Output is correct
38 Correct 142 ms 39252 KB Output is correct
39 Correct 19 ms 30896 KB Output is correct
40 Correct 16 ms 31068 KB Output is correct
41 Correct 16 ms 31068 KB Output is correct
42 Correct 10 ms 30812 KB Output is correct
43 Correct 11 ms 31068 KB Output is correct
44 Correct 20 ms 31068 KB Output is correct
45 Correct 17 ms 31260 KB Output is correct
46 Correct 19 ms 30816 KB Output is correct
47 Correct 17 ms 31068 KB Output is correct
48 Correct 23 ms 31068 KB Output is correct
49 Correct 25 ms 31836 KB Output is correct
50 Correct 122 ms 39508 KB Output is correct
51 Correct 21 ms 31324 KB Output is correct
52 Correct 93 ms 38004 KB Output is correct
53 Correct 31 ms 31832 KB Output is correct
54 Correct 117 ms 38812 KB Output is correct
55 Correct 19 ms 31524 KB Output is correct
56 Correct 18 ms 31324 KB Output is correct
57 Correct 22 ms 31836 KB Output is correct
58 Correct 20 ms 32056 KB Output is correct
59 Correct 16 ms 30812 KB Output is correct
60 Correct 76 ms 35940 KB Output is correct
61 Correct 22 ms 31072 KB Output is correct
62 Correct 106 ms 39028 KB Output is correct

Subtask #3
83.0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 30812 KB Output is correct
2 Correct 15 ms 30812 KB Output is correct
3 Correct 20 ms 30812 KB Output is correct
4 Correct 16 ms 30744 KB Output is correct
5 Correct 19 ms 30812 KB Output is correct
6 Correct 16 ms 30812 KB Output is correct
7 Correct 16 ms 30812 KB Output is correct
8 Correct 20 ms 30812 KB Output is correct
9 Correct 21 ms 30960 KB Output is correct
10 Correct 15 ms 30832 KB Output is correct
11 Correct 21 ms 30812 KB Output is correct
12 Correct 19 ms 30812 KB Output is correct
13 Correct 20 ms 30996 KB Output is correct
14 Correct 16 ms 30812 KB Output is correct
15 Correct 19 ms 30812 KB Output is correct
16 Correct 19 ms 30984 KB Output is correct
17 Correct 18 ms 30812 KB Output is correct
18 Correct 24 ms 30812 KB Output is correct
19 Correct 19 ms 30812 KB Output is correct
20 Correct 17 ms 30812 KB Output is correct
21 Correct 16 ms 30812 KB Output is correct
22 Correct 16 ms 30812 KB Output is correct
23 Correct 18 ms 30812 KB Output is correct
24 Correct 20 ms 30816 KB Output is correct
25 Correct 16 ms 30812 KB Output is correct
26 Correct 16 ms 30812 KB Output is correct
27 Correct 16 ms 30812 KB Output is correct
28 Correct 19 ms 30812 KB Output is correct
29 Correct 15 ms 30812 KB Output is correct
30 Correct 17 ms 30812 KB Output is correct
31 Correct 19 ms 30812 KB Output is correct
32 Correct 16 ms 30812 KB Output is correct
33 Correct 24 ms 30812 KB Output is correct
34 Correct 21 ms 31068 KB Output is correct
35 Correct 113 ms 36668 KB Output is correct
36 Correct 135 ms 39228 KB Output is correct
37 Correct 135 ms 39484 KB Output is correct
38 Correct 142 ms 39252 KB Output is correct
39 Correct 19 ms 30896 KB Output is correct
40 Correct 16 ms 31068 KB Output is correct
41 Correct 16 ms 31068 KB Output is correct
42 Correct 10 ms 30812 KB Output is correct
43 Correct 11 ms 31068 KB Output is correct
44 Correct 20 ms 31068 KB Output is correct
45 Correct 17 ms 31260 KB Output is correct
46 Correct 19 ms 30816 KB Output is correct
47 Correct 17 ms 31068 KB Output is correct
48 Correct 23 ms 31068 KB Output is correct
49 Correct 25 ms 31836 KB Output is correct
50 Correct 122 ms 39508 KB Output is correct
51 Correct 21 ms 31324 KB Output is correct
52 Correct 93 ms 38004 KB Output is correct
53 Correct 31 ms 31832 KB Output is correct
54 Correct 117 ms 38812 KB Output is correct
55 Correct 19 ms 31524 KB Output is correct
56 Correct 18 ms 31324 KB Output is correct
57 Correct 22 ms 31836 KB Output is correct
58 Correct 20 ms 32056 KB Output is correct
59 Correct 16 ms 30812 KB Output is correct
60 Correct 76 ms 35940 KB Output is correct
61 Correct 22 ms 31072 KB Output is correct
62 Correct 106 ms 39028 KB Output is correct
63 Correct 587 ms 73744 KB Output is correct
64 Correct 506 ms 74000 KB Output is correct
65 Correct 520 ms 74004 KB Output is correct
66 Correct 93 ms 35156 KB Output is correct
67 Correct 199 ms 40740 KB Output is correct
68 Correct 100 ms 35412 KB Output is correct
69 Correct 338 ms 41552 KB Output is correct
70 Correct 104 ms 35468 KB Output is correct
71 Correct 124 ms 35244 KB Output is correct
72 Correct 245 ms 41044 KB Output is correct
73 Correct 261 ms 40788 KB Output is correct
74 Correct 920 ms 52960 KB Output is correct
75 Correct 566 ms 46992 KB Output is correct
76 Correct 644 ms 51532 KB Output is correct
77 Correct 613 ms 51628 KB Output is correct
78 Correct 205 ms 40532 KB Output is correct
79 Correct 331 ms 44048 KB Output is correct
80 Correct 237 ms 40276 KB Output is correct
81 Correct 321 ms 43604 KB Output is correct
82 Correct 657 ms 59556 KB Output is correct
83 Correct 576 ms 59552 KB Output is correct
84 Correct 541 ms 83136 KB Output is correct
85 Correct 505 ms 83120 KB Output is correct
86 Correct 91 ms 34456 KB Output is correct
87 Correct 136 ms 36664 KB Output is correct
88 Correct 229 ms 40788 KB Output is correct
89 Correct 554 ms 50408 KB Output is correct