oj.uz

Submission #329349

# Submission time Handle Problem Language Result Execution time Memory
329349 2020-11-20T16:12:27 Z LifeHappen__ Making Friends on Joitter is Fun (JOI20_joitter2) C++14
100 / 100
 714 ms 44368 KB 
#include <bits/stdc++.h>

using namespace std;

#define ii pair<int, int>
#define fi first
#define se second
#define mp make_pair

const int N = 1e5 + 5;
int n, m;
int lab[N], sz[N];
set<int> in[N];
set<ii> out[N];
int64_t ans;

int findset(int x) {
  if(lab[x] == x) return x;
  return lab[x] = findset(lab[x]);
}

void join(int u, int v) {
  int x = findset(u);
  int y = findset(v);
  if(x == y) return;
  auto it = out[y].lower_bound(make_pair(x, 0));
  if(it != out[y].end() && (*it).fi == x) {
    if(in[x].size() + out[x].size() < in[y].size() + out[y].size()) swap(x, y);
    vector<ii> vo;
    for (auto &i : out[y]) {
      ans -= sz[i.fi];
      in[i.fi].erase(i.se);
      if(i.fi != x) vo.push_back(i);
    }
    out[y].clear();
    ans += 1ll * sz[y] * (2 * sz[x] + in[x].size() - in[y].size());
    vector<int> vi;
    for (auto &i : in[y]) {
      int j = findset(i);
      out[j].erase(make_pair(y, i));
      if(j != x) vi.push_back(i);
    }
    in[y].clear();
    lab[y] = x;
    sz[x] += sz[y];
    for (int &i : vi) join(i, x);
    for (ii &i : vo) join(i.se, i.fi);
  } else if(!in[y].count(u)) {
    ans += 1ll * sz[y];
    in[y].insert(u);
    out[x].insert(make_pair(y, u));
  }
}

int32_t main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0); cout.tie(0);

  cin >> n >> m;
  for (int i = 0; i < N; ++i)
    lab[i] = i, sz[i] = 1;
  for (int i = 1; i <= m; ++i) {
    int u, v;
    cin >> u >> v;
    join(u, v);
    cout << ans << '\n';
  }
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 10604 KB Output is correct
2 Correct 7 ms 10476 KB Output is correct
3 Correct 7 ms 10476 KB Output is correct
4 Correct 7 ms 10476 KB Output is correct
5 Correct 7 ms 10476 KB Output is correct
6 Correct 7 ms 10476 KB Output is correct
7 Correct 8 ms 10604 KB Output is correct
8 Correct 8 ms 10604 KB Output is correct
9 Correct 8 ms 10604 KB Output is correct
10 Correct 8 ms 10476 KB Output is correct
11 Correct 7 ms 10476 KB Output is correct
12 Correct 7 ms 10476 KB Output is correct
13 Correct 7 ms 10476 KB Output is correct
14 Correct 7 ms 10496 KB Output is correct
15 Correct 7 ms 10476 KB Output is correct
16 Correct 8 ms 10476 KB Output is correct
17 Correct 7 ms 10476 KB Output is correct
18 Correct 7 ms 10476 KB Output is correct
19 Correct 7 ms 10496 KB Output is correct
20 Correct 8 ms 10476 KB Output is correct
21 Correct 8 ms 10604 KB Output is correct
22 Correct 8 ms 10476 KB Output is correct
23 Correct 8 ms 10604 KB Output is correct
24 Correct 8 ms 10476 KB Output is correct
25 Correct 8 ms 10604 KB Output is correct
26 Correct 8 ms 10476 KB Output is correct
27 Correct 8 ms 10496 KB Output is correct
28 Correct 8 ms 10476 KB Output is correct
29 Correct 7 ms 10476 KB Output is correct
30 Correct 8 ms 10476 KB Output is correct
31 Correct 8 ms 10496 KB Output is correct
32 Correct 8 ms 10476 KB Output is correct
33 Correct 8 ms 10604 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 10604 KB Output is correct
2 Correct 7 ms 10476 KB Output is correct
3 Correct 7 ms 10476 KB Output is correct
4 Correct 7 ms 10476 KB Output is correct
5 Correct 7 ms 10476 KB Output is correct
6 Correct 7 ms 10476 KB Output is correct
7 Correct 8 ms 10604 KB Output is correct
8 Correct 8 ms 10604 KB Output is correct
9 Correct 8 ms 10604 KB Output is correct
10 Correct 8 ms 10476 KB Output is correct
11 Correct 7 ms 10476 KB Output is correct
12 Correct 7 ms 10476 KB Output is correct
13 Correct 7 ms 10476 KB Output is correct
14 Correct 7 ms 10496 KB Output is correct
15 Correct 7 ms 10476 KB Output is correct
16 Correct 8 ms 10476 KB Output is correct
17 Correct 7 ms 10476 KB Output is correct
18 Correct 7 ms 10476 KB Output is correct
19 Correct 7 ms 10496 KB Output is correct
20 Correct 8 ms 10476 KB Output is correct
21 Correct 8 ms 10604 KB Output is correct
22 Correct 8 ms 10476 KB Output is correct
23 Correct 8 ms 10604 KB Output is correct
24 Correct 8 ms 10476 KB Output is correct
25 Correct 8 ms 10604 KB Output is correct
26 Correct 8 ms 10476 KB Output is correct
27 Correct 8 ms 10496 KB Output is correct
28 Correct 8 ms 10476 KB Output is correct
29 Correct 7 ms 10476 KB Output is correct
30 Correct 8 ms 10476 KB Output is correct
31 Correct 8 ms 10496 KB Output is correct
32 Correct 8 ms 10476 KB Output is correct
33 Correct 8 ms 10604 KB Output is correct
34 Correct 11 ms 10732 KB Output is correct
35 Correct 94 ms 15980 KB Output is correct
36 Correct 140 ms 18028 KB Output is correct
37 Correct 127 ms 18124 KB Output is correct
38 Correct 112 ms 17900 KB Output is correct
39 Correct 11 ms 10604 KB Output is correct
40 Correct 11 ms 10732 KB Output is correct
41 Correct 10 ms 10732 KB Output is correct
42 Correct 9 ms 10604 KB Output is correct
43 Correct 10 ms 10732 KB Output is correct
44 Correct 10 ms 10860 KB Output is correct
45 Correct 9 ms 10604 KB Output is correct
46 Correct 9 ms 10604 KB Output is correct
47 Correct 10 ms 10752 KB Output is correct
48 Correct 10 ms 10732 KB Output is correct
49 Correct 16 ms 11244 KB Output is correct
50 Correct 113 ms 18156 KB Output is correct
51 Correct 14 ms 10988 KB Output is correct
52 Correct 105 ms 17132 KB Output is correct
53 Correct 20 ms 11244 KB Output is correct
54 Correct 109 ms 17644 KB Output is correct
55 Correct 12 ms 10988 KB Output is correct
56 Correct 16 ms 10988 KB Output is correct
57 Correct 12 ms 10988 KB Output is correct
58 Correct 12 ms 10988 KB Output is correct
59 Correct 9 ms 10604 KB Output is correct
60 Correct 103 ms 15468 KB Output is correct
61 Correct 11 ms 10860 KB Output is correct
62 Correct 115 ms 17900 KB Output is correct

Subtask #3
83.0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 10604 KB Output is correct
2 Correct 7 ms 10476 KB Output is correct
3 Correct 7 ms 10476 KB Output is correct
4 Correct 7 ms 10476 KB Output is correct
5 Correct 7 ms 10476 KB Output is correct
6 Correct 7 ms 10476 KB Output is correct
7 Correct 8 ms 10604 KB Output is correct
8 Correct 8 ms 10604 KB Output is correct
9 Correct 8 ms 10604 KB Output is correct
10 Correct 8 ms 10476 KB Output is correct
11 Correct 7 ms 10476 KB Output is correct
12 Correct 7 ms 10476 KB Output is correct
13 Correct 7 ms 10476 KB Output is correct
14 Correct 7 ms 10496 KB Output is correct
15 Correct 7 ms 10476 KB Output is correct
16 Correct 8 ms 10476 KB Output is correct
17 Correct 7 ms 10476 KB Output is correct
18 Correct 7 ms 10476 KB Output is correct
19 Correct 7 ms 10496 KB Output is correct
20 Correct 8 ms 10476 KB Output is correct
21 Correct 8 ms 10604 KB Output is correct
22 Correct 8 ms 10476 KB Output is correct
23 Correct 8 ms 10604 KB Output is correct
24 Correct 8 ms 10476 KB Output is correct
25 Correct 8 ms 10604 KB Output is correct
26 Correct 8 ms 10476 KB Output is correct
27 Correct 8 ms 10496 KB Output is correct
28 Correct 8 ms 10476 KB Output is correct
29 Correct 7 ms 10476 KB Output is correct
30 Correct 8 ms 10476 KB Output is correct
31 Correct 8 ms 10496 KB Output is correct
32 Correct 8 ms 10476 KB Output is correct
33 Correct 8 ms 10604 KB Output is correct
34 Correct 11 ms 10732 KB Output is correct
35 Correct 94 ms 15980 KB Output is correct
36 Correct 140 ms 18028 KB Output is correct
37 Correct 127 ms 18124 KB Output is correct
38 Correct 112 ms 17900 KB Output is correct
39 Correct 11 ms 10604 KB Output is correct
40 Correct 11 ms 10732 KB Output is correct
41 Correct 10 ms 10732 KB Output is correct
42 Correct 9 ms 10604 KB Output is correct
43 Correct 10 ms 10732 KB Output is correct
44 Correct 10 ms 10860 KB Output is correct
45 Correct 9 ms 10604 KB Output is correct
46 Correct 9 ms 10604 KB Output is correct
47 Correct 10 ms 10752 KB Output is correct
48 Correct 10 ms 10732 KB Output is correct
49 Correct 16 ms 11244 KB Output is correct
50 Correct 113 ms 18156 KB Output is correct
51 Correct 14 ms 10988 KB Output is correct
52 Correct 105 ms 17132 KB Output is correct
53 Correct 20 ms 11244 KB Output is correct
54 Correct 109 ms 17644 KB Output is correct
55 Correct 12 ms 10988 KB Output is correct
56 Correct 16 ms 10988 KB Output is correct
57 Correct 12 ms 10988 KB Output is correct
58 Correct 12 ms 10988 KB Output is correct
59 Correct 9 ms 10604 KB Output is correct
60 Correct 103 ms 15468 KB Output is correct
61 Correct 11 ms 10860 KB Output is correct
62 Correct 115 ms 17900 KB Output is correct
63 Correct 447 ms 44368 KB Output is correct
64 Correct 437 ms 44268 KB Output is correct
65 Correct 435 ms 44272 KB Output is correct
66 Correct 104 ms 14956 KB Output is correct
67 Correct 230 ms 18924 KB Output is correct
68 Correct 94 ms 14956 KB Output is correct
69 Correct 275 ms 19692 KB Output is correct
70 Correct 110 ms 14956 KB Output is correct
71 Correct 121 ms 14956 KB Output is correct
72 Correct 237 ms 19052 KB Output is correct
73 Correct 232 ms 19052 KB Output is correct
74 Correct 714 ms 28268 KB Output is correct
75 Correct 422 ms 24428 KB Output is correct
76 Correct 545 ms 27144 KB Output is correct
77 Correct 557 ms 27500 KB Output is correct
78 Correct 178 ms 18480 KB Output is correct
79 Correct 308 ms 22252 KB Output is correct
80 Correct 183 ms 18540 KB Output is correct
81 Correct 267 ms 21740 KB Output is correct
82 Correct 548 ms 33004 KB Output is correct
83 Correct 500 ms 32876 KB Output is correct
84 Correct 488 ms 33560 KB Output is correct
85 Correct 468 ms 33260 KB Output is correct
86 Correct 116 ms 14188 KB Output is correct
87 Correct 149 ms 16364 KB Output is correct
88 Correct 258 ms 19180 KB Output is correct
89 Correct 539 ms 26732 KB Output is correct