oj.uz

Submission #1045502

# Submission time Handle Problem Language Result Execution time Memory
1045502 2024-08-06T03:50:27 Z abczz Making Friends on Joitter is Fun (JOI20_joitter2) C++17
100 / 100
 1104 ms 106984 KB 
#include <iostream>
#include <vector>
#include <map>
#include <vector>
#include <array>
#include <queue>
#define ll long long

using namespace std;

vector <ll> V[100000];
queue <array<ll, 2>> Q;
map <ll, ll> adj[100000], radj[100000], cyc[100000], rcyc[100000];
ll n, m, a, b, f, P[100000], sz[100000];

ll dsu(ll u) {
  if (P[u] == u) return u;
  else return P[u] = dsu(P[u]);
}

void merge(ll a, ll b) {
  a = dsu(a), b = dsu(b);
  if (a == b) return;
  if (sz[a] < sz[b]) swap(a, b);
  for (auto [x, y] : cyc[b]) {
    if (x == a) continue;
    ++cyc[a][x];
    ++rcyc[x][a];
    if (cyc[x].count(a)) Q.push({x, a});
  }
  for (auto [x, y] : rcyc[b]) {
    if (x == a) continue;
    ++rcyc[a][x];
    ++cyc[x][a];
    if (cyc[a].count(x)) Q.push({x, a});
  }
  cyc[a].erase(b);
  rcyc[a].erase(b);
  cyc[b].clear();
  rcyc[b].clear();
  for (auto [x, y] : radj[b]) {
    if (dsu(x) == a || adj[x].count(a)) f -= sz[b];
    else {
      ++adj[x][a];
      ++radj[a][x];
      f += sz[a];
      f -= sz[b];
    }
    adj[x].erase(b);
  }
  radj[b].clear();
  for (auto u : V[b]) {
    if (adj[u].count(a)) {
      adj[u].erase(a);
      radj[a].erase(u);
      f -= sz[a];
    }
    V[a].push_back(u);
  }
  V[b].clear();
  f += radj[a].size() * sz[b];
  f += sz[a] * sz[b] * 2;
  sz[a] += sz[b];
  P[b] = a;
}
int main() {
  cin.tie(0);
  ios::sync_with_stdio(0);
  cin >> n >> m;
  for (int i=0; i<n; ++i) P[i] = i, sz[i] = 1, V[i].push_back(i);
  for (int i=0; i<m; ++i) {
    cin >> a >> b;
    --a, --b;
    if (dsu(a) == dsu(b)) {
      cout << f << '\n';
      continue;
    }
    b = dsu(b);
    if (!adj[a].count(b)) {
      ++adj[a][b];
      ++radj[b][a];
      f += sz[b];
    }
    a = dsu(a);
    ++cyc[a][b];
    ++rcyc[b][a];
    if (!cyc[b].count(a)) {
      cout << f << '\n';
      continue;
    }
    Q.push({a, b});
    while (!Q.empty()) {
      auto [x, y] = Q.front();
      Q.pop();
      merge(x, y);
    }
    cout << f << '\n';
  }
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 22876 KB Output is correct
2 Correct 3 ms 22988 KB Output is correct
3 Correct 3 ms 22876 KB Output is correct
4 Correct 3 ms 22876 KB Output is correct
5 Correct 3 ms 22876 KB Output is correct
6 Correct 3 ms 22984 KB Output is correct
7 Correct 3 ms 22876 KB Output is correct
8 Correct 4 ms 22876 KB Output is correct
9 Correct 3 ms 22876 KB Output is correct
10 Correct 3 ms 22876 KB Output is correct
11 Correct 4 ms 22872 KB Output is correct
12 Correct 3 ms 22876 KB Output is correct
13 Correct 3 ms 22876 KB Output is correct
14 Correct 4 ms 22876 KB Output is correct
15 Correct 4 ms 22872 KB Output is correct
16 Correct 3 ms 22876 KB Output is correct
17 Correct 3 ms 22876 KB Output is correct
18 Correct 3 ms 22876 KB Output is correct
19 Correct 3 ms 22876 KB Output is correct
20 Correct 4 ms 22876 KB Output is correct
21 Correct 3 ms 23000 KB Output is correct
22 Correct 3 ms 22876 KB Output is correct
23 Correct 3 ms 22872 KB Output is correct
24 Correct 4 ms 22876 KB Output is correct
25 Correct 4 ms 22876 KB Output is correct
26 Correct 4 ms 23132 KB Output is correct
27 Correct 3 ms 22876 KB Output is correct
28 Correct 3 ms 22876 KB Output is correct
29 Correct 4 ms 22876 KB Output is correct
30 Correct 3 ms 22984 KB Output is correct
31 Correct 4 ms 22876 KB Output is correct
32 Correct 4 ms 22876 KB Output is correct
33 Correct 5 ms 22996 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 22876 KB Output is correct
2 Correct 3 ms 22988 KB Output is correct
3 Correct 3 ms 22876 KB Output is correct
4 Correct 3 ms 22876 KB Output is correct
5 Correct 3 ms 22876 KB Output is correct
6 Correct 3 ms 22984 KB Output is correct
7 Correct 3 ms 22876 KB Output is correct
8 Correct 4 ms 22876 KB Output is correct
9 Correct 3 ms 22876 KB Output is correct
10 Correct 3 ms 22876 KB Output is correct
11 Correct 4 ms 22872 KB Output is correct
12 Correct 3 ms 22876 KB Output is correct
13 Correct 3 ms 22876 KB Output is correct
14 Correct 4 ms 22876 KB Output is correct
15 Correct 4 ms 22872 KB Output is correct
16 Correct 3 ms 22876 KB Output is correct
17 Correct 3 ms 22876 KB Output is correct
18 Correct 3 ms 22876 KB Output is correct
19 Correct 3 ms 22876 KB Output is correct
20 Correct 4 ms 22876 KB Output is correct
21 Correct 3 ms 23000 KB Output is correct
22 Correct 3 ms 22876 KB Output is correct
23 Correct 3 ms 22872 KB Output is correct
24 Correct 4 ms 22876 KB Output is correct
25 Correct 4 ms 22876 KB Output is correct
26 Correct 4 ms 23132 KB Output is correct
27 Correct 3 ms 22876 KB Output is correct
28 Correct 3 ms 22876 KB Output is correct
29 Correct 4 ms 22876 KB Output is correct
30 Correct 3 ms 22984 KB Output is correct
31 Correct 4 ms 22876 KB Output is correct
32 Correct 4 ms 22876 KB Output is correct
33 Correct 5 ms 22996 KB Output is correct
34 Correct 5 ms 23132 KB Output is correct
35 Correct 46 ms 29784 KB Output is correct
36 Correct 68 ms 34180 KB Output is correct
37 Correct 68 ms 34384 KB Output is correct
38 Correct 69 ms 33616 KB Output is correct
39 Correct 4 ms 23132 KB Output is correct
40 Correct 6 ms 23644 KB Output is correct
41 Correct 7 ms 23644 KB Output is correct
42 Correct 4 ms 23132 KB Output is correct
43 Correct 6 ms 23388 KB Output is correct
44 Correct 6 ms 23192 KB Output is correct
45 Correct 5 ms 23132 KB Output is correct
46 Correct 4 ms 23132 KB Output is correct
47 Correct 6 ms 23388 KB Output is correct
48 Correct 8 ms 23388 KB Output is correct
49 Correct 13 ms 24668 KB Output is correct
50 Correct 73 ms 34568 KB Output is correct
51 Correct 8 ms 23640 KB Output is correct
52 Correct 54 ms 31312 KB Output is correct
53 Correct 12 ms 24664 KB Output is correct
54 Correct 60 ms 32932 KB Output is correct
55 Correct 10 ms 24152 KB Output is correct
56 Correct 8 ms 24156 KB Output is correct
57 Correct 7 ms 24144 KB Output is correct
58 Correct 7 ms 24156 KB Output is correct
59 Correct 5 ms 23132 KB Output is correct
60 Correct 40 ms 28024 KB Output is correct
61 Correct 7 ms 23388 KB Output is correct
62 Correct 62 ms 33300 KB Output is correct

Subtask #3
83.0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 22876 KB Output is correct
2 Correct 3 ms 22988 KB Output is correct
3 Correct 3 ms 22876 KB Output is correct
4 Correct 3 ms 22876 KB Output is correct
5 Correct 3 ms 22876 KB Output is correct
6 Correct 3 ms 22984 KB Output is correct
7 Correct 3 ms 22876 KB Output is correct
8 Correct 4 ms 22876 KB Output is correct
9 Correct 3 ms 22876 KB Output is correct
10 Correct 3 ms 22876 KB Output is correct
11 Correct 4 ms 22872 KB Output is correct
12 Correct 3 ms 22876 KB Output is correct
13 Correct 3 ms 22876 KB Output is correct
14 Correct 4 ms 22876 KB Output is correct
15 Correct 4 ms 22872 KB Output is correct
16 Correct 3 ms 22876 KB Output is correct
17 Correct 3 ms 22876 KB Output is correct
18 Correct 3 ms 22876 KB Output is correct
19 Correct 3 ms 22876 KB Output is correct
20 Correct 4 ms 22876 KB Output is correct
21 Correct 3 ms 23000 KB Output is correct
22 Correct 3 ms 22876 KB Output is correct
23 Correct 3 ms 22872 KB Output is correct
24 Correct 4 ms 22876 KB Output is correct
25 Correct 4 ms 22876 KB Output is correct
26 Correct 4 ms 23132 KB Output is correct
27 Correct 3 ms 22876 KB Output is correct
28 Correct 3 ms 22876 KB Output is correct
29 Correct 4 ms 22876 KB Output is correct
30 Correct 3 ms 22984 KB Output is correct
31 Correct 4 ms 22876 KB Output is correct
32 Correct 4 ms 22876 KB Output is correct
33 Correct 5 ms 22996 KB Output is correct
34 Correct 5 ms 23132 KB Output is correct
35 Correct 46 ms 29784 KB Output is correct
36 Correct 68 ms 34180 KB Output is correct
37 Correct 68 ms 34384 KB Output is correct
38 Correct 69 ms 33616 KB Output is correct
39 Correct 4 ms 23132 KB Output is correct
40 Correct 6 ms 23644 KB Output is correct
41 Correct 7 ms 23644 KB Output is correct
42 Correct 4 ms 23132 KB Output is correct
43 Correct 6 ms 23388 KB Output is correct
44 Correct 6 ms 23192 KB Output is correct
45 Correct 5 ms 23132 KB Output is correct
46 Correct 4 ms 23132 KB Output is correct
47 Correct 6 ms 23388 KB Output is correct
48 Correct 8 ms 23388 KB Output is correct
49 Correct 13 ms 24668 KB Output is correct
50 Correct 73 ms 34568 KB Output is correct
51 Correct 8 ms 23640 KB Output is correct
52 Correct 54 ms 31312 KB Output is correct
53 Correct 12 ms 24664 KB Output is correct
54 Correct 60 ms 32932 KB Output is correct
55 Correct 10 ms 24152 KB Output is correct
56 Correct 8 ms 24156 KB Output is correct
57 Correct 7 ms 24144 KB Output is correct
58 Correct 7 ms 24156 KB Output is correct
59 Correct 5 ms 23132 KB Output is correct
60 Correct 40 ms 28024 KB Output is correct
61 Correct 7 ms 23388 KB Output is correct
62 Correct 62 ms 33300 KB Output is correct
63 Correct 412 ms 106664 KB Output is correct
64 Correct 372 ms 106628 KB Output is correct
65 Correct 406 ms 106984 KB Output is correct
66 Correct 67 ms 31552 KB Output is correct
67 Correct 384 ms 68412 KB Output is correct
68 Correct 78 ms 31500 KB Output is correct
69 Correct 313 ms 43980 KB Output is correct
70 Correct 79 ms 31484 KB Output is correct
71 Correct 83 ms 31400 KB Output is correct
72 Correct 291 ms 47176 KB Output is correct
73 Correct 300 ms 47552 KB Output is correct
74 Correct 1104 ms 91720 KB Output is correct
75 Correct 406 ms 53700 KB Output is correct
76 Correct 673 ms 69840 KB Output is correct
77 Correct 638 ms 70084 KB Output is correct
78 Correct 154 ms 45624 KB Output is correct
79 Correct 255 ms 49472 KB Output is correct
80 Correct 130 ms 45512 KB Output is correct
81 Correct 210 ms 49088 KB Output is correct
82 Correct 728 ms 81264 KB Output is correct
83 Correct 725 ms 81228 KB Output is correct
84 Correct 542 ms 81176 KB Output is correct
85 Correct 542 ms 81028 KB Output is correct
86 Correct 97 ms 41660 KB Output is correct
87 Correct 96 ms 43704 KB Output is correct
88 Correct 298 ms 47528 KB Output is correct
89 Correct 585 ms 66844 KB Output is correct