oj.uz

Submission #814022

# Submission time Handle Problem Language Result Execution time Memory
814022 2023-08-08T05:05:31 Z boyliguanhan Making Friends on Joitter is Fun (JOI20_joitter2) C++17
100 / 100
 1061 ms 84372 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
int p[200100],sz[200100],ans;
set<int> ch[200100], adj[200100], radj[200100];
queue<pair<int, int>> to_merge;
void ME(int x, int y) {
	adj[x].insert(y);
	radj[y].insert(x);
	if (adj[y].count(x)) to_merge.push({x, y});
}
int allssz(int x) {
	return ch[x].size() + adj[x].size() + radj[x].size();
}
int abp(int n) {
    if(p[n]-n)
        p[n]=abp(p[n]);
    return p[n];
}
void Union(int x, int y) {
	if (x == y) return;
	if (allssz(x) < allssz(y))
        swap(x, y);
	ans += sz[y] * ch[x].size() + sz[x] * ch[y].size();
    	p[y] = x;
	sz[x] += sz[y];
    	for (int i : ch[y])
		if (ch[x].count(i))
            ans -= sz[x];
		else
            ch[x].insert(i);
	adj[x].erase(y), radj[x].erase(y);
	adj[y].erase(x), radj[y].erase(x);
	for (int i : adj[y]) {
		radj[i].erase(y);
		ME(x, i);
	}
	for (int i : radj[y]) {
		adj[i].erase(y);
		ME(i, x);
	}
}
signed main() {
    cin.sync_with_stdio(false);
    cin.tie(nullptr);
    iota(p,p+200100,0);
	int n, m;
	cin >> n >> m;
	for (int i = 1; i <= n; i++) {
		sz[i] = 1;
		ch[i].insert(i);
	}
	while (m--) {
		int x, y;
		cin >> x >> y;
        y = abp(y);
		if (abp(x) != y && !ch[y].count(x)) {
			ch[y].insert(x);
			ans += sz[y];
			x = abp(x);
			ME(x, y);
			while (to_merge.size()) {
				tie(x, y) = to_merge.front();
				to_merge.pop();
				Union(abp(x), abp(y));
			}
		}
		cout << ans << '\n';
	}
	return 0;
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 30076 KB Output is correct
2 Correct 14 ms 30016 KB Output is correct
3 Correct 15 ms 30044 KB Output is correct
4 Correct 15 ms 30100 KB Output is correct
5 Correct 14 ms 30036 KB Output is correct
6 Correct 14 ms 30036 KB Output is correct
7 Correct 14 ms 30036 KB Output is correct
8 Correct 14 ms 30100 KB Output is correct
9 Correct 15 ms 30080 KB Output is correct
10 Correct 14 ms 30036 KB Output is correct
11 Correct 14 ms 30108 KB Output is correct
12 Correct 17 ms 30004 KB Output is correct
13 Correct 14 ms 30036 KB Output is correct
14 Correct 14 ms 30036 KB Output is correct
15 Correct 15 ms 30100 KB Output is correct
16 Correct 15 ms 30036 KB Output is correct
17 Correct 15 ms 29996 KB Output is correct
18 Correct 14 ms 30096 KB Output is correct
19 Correct 13 ms 30036 KB Output is correct
20 Correct 15 ms 30080 KB Output is correct
21 Correct 15 ms 30104 KB Output is correct
22 Correct 14 ms 30016 KB Output is correct
23 Correct 15 ms 30076 KB Output is correct
24 Correct 14 ms 30096 KB Output is correct
25 Correct 15 ms 30044 KB Output is correct
26 Correct 15 ms 30092 KB Output is correct
27 Correct 14 ms 30096 KB Output is correct
28 Correct 19 ms 30228 KB Output is correct
29 Correct 15 ms 30096 KB Output is correct
30 Correct 15 ms 30064 KB Output is correct
31 Correct 14 ms 30036 KB Output is correct
32 Correct 15 ms 30036 KB Output is correct
33 Correct 15 ms 30056 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 30076 KB Output is correct
2 Correct 14 ms 30016 KB Output is correct
3 Correct 15 ms 30044 KB Output is correct
4 Correct 15 ms 30100 KB Output is correct
5 Correct 14 ms 30036 KB Output is correct
6 Correct 14 ms 30036 KB Output is correct
7 Correct 14 ms 30036 KB Output is correct
8 Correct 14 ms 30100 KB Output is correct
9 Correct 15 ms 30080 KB Output is correct
10 Correct 14 ms 30036 KB Output is correct
11 Correct 14 ms 30108 KB Output is correct
12 Correct 17 ms 30004 KB Output is correct
13 Correct 14 ms 30036 KB Output is correct
14 Correct 14 ms 30036 KB Output is correct
15 Correct 15 ms 30100 KB Output is correct
16 Correct 15 ms 30036 KB Output is correct
17 Correct 15 ms 29996 KB Output is correct
18 Correct 14 ms 30096 KB Output is correct
19 Correct 13 ms 30036 KB Output is correct
20 Correct 15 ms 30080 KB Output is correct
21 Correct 15 ms 30104 KB Output is correct
22 Correct 14 ms 30016 KB Output is correct
23 Correct 15 ms 30076 KB Output is correct
24 Correct 14 ms 30096 KB Output is correct
25 Correct 15 ms 30044 KB Output is correct
26 Correct 15 ms 30092 KB Output is correct
27 Correct 14 ms 30096 KB Output is correct
28 Correct 19 ms 30228 KB Output is correct
29 Correct 15 ms 30096 KB Output is correct
30 Correct 15 ms 30064 KB Output is correct
31 Correct 14 ms 30036 KB Output is correct
32 Correct 15 ms 30036 KB Output is correct
33 Correct 15 ms 30056 KB Output is correct
34 Correct 16 ms 30236 KB Output is correct
35 Correct 73 ms 35912 KB Output is correct
36 Correct 92 ms 38788 KB Output is correct
37 Correct 98 ms 39052 KB Output is correct
38 Correct 88 ms 38488 KB Output is correct
39 Correct 17 ms 30420 KB Output is correct
40 Correct 18 ms 30804 KB Output is correct
41 Correct 18 ms 30744 KB Output is correct
42 Correct 16 ms 30368 KB Output is correct
43 Correct 18 ms 30372 KB Output is correct
44 Correct 16 ms 30420 KB Output is correct
45 Correct 16 ms 30352 KB Output is correct
46 Correct 16 ms 30420 KB Output is correct
47 Correct 18 ms 30604 KB Output is correct
48 Correct 18 ms 30548 KB Output is correct
49 Correct 22 ms 31388 KB Output is correct
50 Correct 92 ms 39056 KB Output is correct
51 Correct 20 ms 30700 KB Output is correct
52 Correct 80 ms 37160 KB Output is correct
53 Correct 22 ms 31308 KB Output is correct
54 Correct 88 ms 38160 KB Output is correct
55 Correct 19 ms 30804 KB Output is correct
56 Correct 23 ms 30872 KB Output is correct
57 Correct 19 ms 30744 KB Output is correct
58 Correct 18 ms 30856 KB Output is correct
59 Correct 16 ms 30804 KB Output is correct
60 Correct 68 ms 35788 KB Output is correct
61 Correct 18 ms 30600 KB Output is correct
62 Correct 86 ms 38396 KB Output is correct

Subtask #3
83.0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 30076 KB Output is correct
2 Correct 14 ms 30016 KB Output is correct
3 Correct 15 ms 30044 KB Output is correct
4 Correct 15 ms 30100 KB Output is correct
5 Correct 14 ms 30036 KB Output is correct
6 Correct 14 ms 30036 KB Output is correct
7 Correct 14 ms 30036 KB Output is correct
8 Correct 14 ms 30100 KB Output is correct
9 Correct 15 ms 30080 KB Output is correct
10 Correct 14 ms 30036 KB Output is correct
11 Correct 14 ms 30108 KB Output is correct
12 Correct 17 ms 30004 KB Output is correct
13 Correct 14 ms 30036 KB Output is correct
14 Correct 14 ms 30036 KB Output is correct
15 Correct 15 ms 30100 KB Output is correct
16 Correct 15 ms 30036 KB Output is correct
17 Correct 15 ms 29996 KB Output is correct
18 Correct 14 ms 30096 KB Output is correct
19 Correct 13 ms 30036 KB Output is correct
20 Correct 15 ms 30080 KB Output is correct
21 Correct 15 ms 30104 KB Output is correct
22 Correct 14 ms 30016 KB Output is correct
23 Correct 15 ms 30076 KB Output is correct
24 Correct 14 ms 30096 KB Output is correct
25 Correct 15 ms 30044 KB Output is correct
26 Correct 15 ms 30092 KB Output is correct
27 Correct 14 ms 30096 KB Output is correct
28 Correct 19 ms 30228 KB Output is correct
29 Correct 15 ms 30096 KB Output is correct
30 Correct 15 ms 30064 KB Output is correct
31 Correct 14 ms 30036 KB Output is correct
32 Correct 15 ms 30036 KB Output is correct
33 Correct 15 ms 30056 KB Output is correct
34 Correct 16 ms 30236 KB Output is correct
35 Correct 73 ms 35912 KB Output is correct
36 Correct 92 ms 38788 KB Output is correct
37 Correct 98 ms 39052 KB Output is correct
38 Correct 88 ms 38488 KB Output is correct
39 Correct 17 ms 30420 KB Output is correct
40 Correct 18 ms 30804 KB Output is correct
41 Correct 18 ms 30744 KB Output is correct
42 Correct 16 ms 30368 KB Output is correct
43 Correct 18 ms 30372 KB Output is correct
44 Correct 16 ms 30420 KB Output is correct
45 Correct 16 ms 30352 KB Output is correct
46 Correct 16 ms 30420 KB Output is correct
47 Correct 18 ms 30604 KB Output is correct
48 Correct 18 ms 30548 KB Output is correct
49 Correct 22 ms 31388 KB Output is correct
50 Correct 92 ms 39056 KB Output is correct
51 Correct 20 ms 30700 KB Output is correct
52 Correct 80 ms 37160 KB Output is correct
53 Correct 22 ms 31308 KB Output is correct
54 Correct 88 ms 38160 KB Output is correct
55 Correct 19 ms 30804 KB Output is correct
56 Correct 23 ms 30872 KB Output is correct
57 Correct 19 ms 30744 KB Output is correct
58 Correct 18 ms 30856 KB Output is correct
59 Correct 16 ms 30804 KB Output is correct
60 Correct 68 ms 35788 KB Output is correct
61 Correct 18 ms 30600 KB Output is correct
62 Correct 86 ms 38396 KB Output is correct
63 Correct 531 ms 83240 KB Output is correct
64 Correct 513 ms 83280 KB Output is correct
65 Correct 490 ms 83280 KB Output is correct
66 Correct 196 ms 49292 KB Output is correct
67 Correct 389 ms 76184 KB Output is correct
68 Correct 193 ms 49288 KB Output is correct
69 Correct 376 ms 50484 KB Output is correct
70 Correct 201 ms 49328 KB Output is correct
71 Correct 240 ms 49312 KB Output is correct
72 Correct 369 ms 60468 KB Output is correct
73 Correct 412 ms 61920 KB Output is correct
74 Correct 1061 ms 84332 KB Output is correct
75 Correct 588 ms 57256 KB Output is correct
76 Correct 774 ms 69216 KB Output is correct
77 Correct 746 ms 69508 KB Output is correct
78 Correct 260 ms 52984 KB Output is correct
79 Correct 334 ms 57424 KB Output is correct
80 Correct 214 ms 51800 KB Output is correct
81 Correct 314 ms 55356 KB Output is correct
82 Correct 771 ms 69944 KB Output is correct
83 Correct 794 ms 69996 KB Output is correct
84 Correct 552 ms 68652 KB Output is correct
85 Correct 606 ms 68620 KB Output is correct
86 Correct 415 ms 82156 KB Output is correct
87 Correct 324 ms 84372 KB Output is correct
88 Correct 413 ms 61272 KB Output is correct
89 Correct 650 ms 67252 KB Output is correct