Submission #269459

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
269459	2020-08-17T07:13:36 Z	임성재(#5102)	Making Friends on Joitter is Fun (JOI20_joitter2)	C++17	17 / 100	5000 ms	453692 KB

joitter2

#include<bits/stdc++.h>
using namespace std;

#define fast ios::sync_with_stdio(false); cin.tie(0);
#define fi first
#define se second
#define all(v) (v).begin(), (v).end()
#define em emplace
#define eb emplace_back
#define mp make_pair

typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
const ll INF = 1e18;
const int inf = 1e9;
const ll Mod = 1e9 + 7;

int n, m;
int a, b;
int p[100010];
ll sz[100010];
set<int> in[100010], out[100010];
ll ans;
vector<pii> q;

int Find(int a) {
	return p[a] = a == p[a] ? a : Find(p[a]);
}

void Union(int a, int b) {
	a = Find(a);
	b = Find(b);

	if(a == b) return;

	//cout << a << "!!! " << b << "\n";

	ans -= sz[a] * (sz[a]-1) + sz[b] * (sz[b] - 1);
	ans -= sz[a] * in[a].size();
	ans -= sz[b] * in[b].size();

	p[b] = a;
	sz[a] += sz[b];
	sz[b] = 0;

	ans += sz[a] * (sz[a] - 1);

	for(auto i : out[b]) {
		if(Find(i) == a) continue;

		out[a].insert(Find(i));
		if(out[Find(i)].find(a) != out[Find(i)].end()) {
			q.eb(a, Find(i));
		}
	}

	for(auto i : in[b]) {
		if(Find(i) == a) continue;

		in[a].insert(i);
		out[Find(i)].insert(a);

		if(out[a].find(Find(i)) != out[a].end()) {
			q.eb(a, Find(i));
		}
	}

	vector<int> v;

	for(auto i : in[a]) {
		if(Find(i) == a) v.eb(i);
	}

	for(auto i : v) in[a].erase(i);

	ans += sz[a] * in[a].size();
}

int main() {
	fast;

	cin >> n >> m;

	for(int i=1; i<=n; i++) 
		p[i] = i, sz[i] = 1;

	for(int i=1; i<=m; i++) {
		cin >> a >> b;

		if(Find(a) == Find(b) || in[Find(b)].find(a) != in[Find(b)].end()) {
			cout << ans << "\n";
			continue;
		}

		in[Find(b)].insert(a);
		out[Find(a)].insert(Find(b));

		ans += sz[Find(b)];

		if(out[Find(b)].find(Find(a)) != out[Find(b)].end()) {
			q.eb(a, b);
		}

		while(q.size()) {
			auto x = q.back();
			q.pop_back();

			Union(x.fi, x.se);
		}

		cout << ans << "\n";
	}

}

Subtask #1
1.0 / 1.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	8 ms	9728 KB	Output is correct
2	Correct	7 ms	9728 KB	Output is correct
3	Correct	7 ms	9728 KB	Output is correct
4	Correct	8 ms	9728 KB	Output is correct
5	Correct	7 ms	9728 KB	Output is correct
6	Correct	8 ms	9728 KB	Output is correct
7	Correct	7 ms	9728 KB	Output is correct
8	Correct	8 ms	9728 KB	Output is correct
9	Correct	7 ms	9728 KB	Output is correct
10	Correct	7 ms	9728 KB	Output is correct
11	Correct	8 ms	9728 KB	Output is correct
12	Correct	7 ms	9728 KB	Output is correct
13	Correct	7 ms	9728 KB	Output is correct
14	Correct	7 ms	9728 KB	Output is correct
15	Correct	7 ms	9728 KB	Output is correct
16	Correct	8 ms	9728 KB	Output is correct
17	Correct	7 ms	9728 KB	Output is correct
18	Correct	9 ms	9728 KB	Output is correct
19	Correct	7 ms	9728 KB	Output is correct
20	Correct	7 ms	9728 KB	Output is correct
21	Correct	9 ms	9728 KB	Output is correct
22	Correct	3 ms	9728 KB	Output is correct
23	Correct	7 ms	9728 KB	Output is correct
24	Correct	8 ms	9728 KB	Output is correct
25	Correct	7 ms	9728 KB	Output is correct
26	Correct	8 ms	9728 KB	Output is correct
27	Correct	10 ms	9728 KB	Output is correct
28	Correct	9 ms	9728 KB	Output is correct
29	Correct	7 ms	9728 KB	Output is correct
30	Correct	7 ms	9728 KB	Output is correct
31	Correct	8 ms	9728 KB	Output is correct
32	Correct	7 ms	9728 KB	Output is correct
33	Correct	11 ms	9728 KB	Output is correct

Subtask #2
16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	8 ms	9728 KB	Output is correct
2	Correct	7 ms	9728 KB	Output is correct
3	Correct	7 ms	9728 KB	Output is correct
4	Correct	8 ms	9728 KB	Output is correct
5	Correct	7 ms	9728 KB	Output is correct
6	Correct	8 ms	9728 KB	Output is correct
7	Correct	7 ms	9728 KB	Output is correct
8	Correct	8 ms	9728 KB	Output is correct
9	Correct	7 ms	9728 KB	Output is correct
10	Correct	7 ms	9728 KB	Output is correct
11	Correct	8 ms	9728 KB	Output is correct
12	Correct	7 ms	9728 KB	Output is correct
13	Correct	7 ms	9728 KB	Output is correct
14	Correct	7 ms	9728 KB	Output is correct
15	Correct	7 ms	9728 KB	Output is correct
16	Correct	8 ms	9728 KB	Output is correct
17	Correct	7 ms	9728 KB	Output is correct
18	Correct	9 ms	9728 KB	Output is correct
19	Correct	7 ms	9728 KB	Output is correct
20	Correct	7 ms	9728 KB	Output is correct
21	Correct	9 ms	9728 KB	Output is correct
22	Correct	3 ms	9728 KB	Output is correct
23	Correct	7 ms	9728 KB	Output is correct
24	Correct	8 ms	9728 KB	Output is correct
25	Correct	7 ms	9728 KB	Output is correct
26	Correct	8 ms	9728 KB	Output is correct
27	Correct	10 ms	9728 KB	Output is correct
28	Correct	9 ms	9728 KB	Output is correct
29	Correct	7 ms	9728 KB	Output is correct
30	Correct	7 ms	9728 KB	Output is correct
31	Correct	8 ms	9728 KB	Output is correct
32	Correct	7 ms	9728 KB	Output is correct
33	Correct	11 ms	9728 KB	Output is correct
34	Correct	15 ms	9856 KB	Output is correct
35	Correct	93 ms	12920 KB	Output is correct
36	Correct	138 ms	15032 KB	Output is correct
37	Correct	137 ms	15068 KB	Output is correct
38	Correct	130 ms	14716 KB	Output is correct
39	Correct	9 ms	10112 KB	Output is correct
40	Correct	10 ms	10112 KB	Output is correct
41	Correct	10 ms	10240 KB	Output is correct
42	Correct	9 ms	10112 KB	Output is correct
43	Correct	419 ms	58444 KB	Output is correct
44	Correct	481 ms	56952 KB	Output is correct
45	Correct	11 ms	10112 KB	Output is correct
46	Correct	12 ms	10112 KB	Output is correct
47	Correct	26 ms	11392 KB	Output is correct
48	Correct	22 ms	11520 KB	Output is correct
49	Correct	23 ms	11008 KB	Output is correct
50	Correct	143 ms	15220 KB	Output is correct
51	Correct	257 ms	37240 KB	Output is correct
52	Correct	123 ms	13816 KB	Output is correct
53	Correct	30 ms	11264 KB	Output is correct
54	Correct	131 ms	14444 KB	Output is correct
55	Correct	22 ms	10368 KB	Output is correct
56	Correct	23 ms	10368 KB	Output is correct
57	Correct	20 ms	10368 KB	Output is correct
58	Correct	21 ms	10368 KB	Output is correct
59	Correct	12 ms	10112 KB	Output is correct
60	Correct	88 ms	12468 KB	Output is correct
61	Correct	43 ms	15352 KB	Output is correct
62	Correct	147 ms	14556 KB	Output is correct

Subtask #3
0 / 83.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	8 ms	9728 KB	Output is correct
2	Correct	7 ms	9728 KB	Output is correct
3	Correct	7 ms	9728 KB	Output is correct
4	Correct	8 ms	9728 KB	Output is correct
5	Correct	7 ms	9728 KB	Output is correct
6	Correct	8 ms	9728 KB	Output is correct
7	Correct	7 ms	9728 KB	Output is correct
8	Correct	8 ms	9728 KB	Output is correct
9	Correct	7 ms	9728 KB	Output is correct
10	Correct	7 ms	9728 KB	Output is correct
11	Correct	8 ms	9728 KB	Output is correct
12	Correct	7 ms	9728 KB	Output is correct
13	Correct	7 ms	9728 KB	Output is correct
14	Correct	7 ms	9728 KB	Output is correct
15	Correct	7 ms	9728 KB	Output is correct
16	Correct	8 ms	9728 KB	Output is correct
17	Correct	7 ms	9728 KB	Output is correct
18	Correct	9 ms	9728 KB	Output is correct
19	Correct	7 ms	9728 KB	Output is correct
20	Correct	7 ms	9728 KB	Output is correct
21	Correct	9 ms	9728 KB	Output is correct
22	Correct	3 ms	9728 KB	Output is correct
23	Correct	7 ms	9728 KB	Output is correct
24	Correct	8 ms	9728 KB	Output is correct
25	Correct	7 ms	9728 KB	Output is correct
26	Correct	8 ms	9728 KB	Output is correct
27	Correct	10 ms	9728 KB	Output is correct
28	Correct	9 ms	9728 KB	Output is correct
29	Correct	7 ms	9728 KB	Output is correct
30	Correct	7 ms	9728 KB	Output is correct
31	Correct	8 ms	9728 KB	Output is correct
32	Correct	7 ms	9728 KB	Output is correct
33	Correct	11 ms	9728 KB	Output is correct
34	Correct	15 ms	9856 KB	Output is correct
35	Correct	93 ms	12920 KB	Output is correct
36	Correct	138 ms	15032 KB	Output is correct
37	Correct	137 ms	15068 KB	Output is correct
38	Correct	130 ms	14716 KB	Output is correct
39	Correct	9 ms	10112 KB	Output is correct
40	Correct	10 ms	10112 KB	Output is correct
41	Correct	10 ms	10240 KB	Output is correct
42	Correct	9 ms	10112 KB	Output is correct
43	Correct	419 ms	58444 KB	Output is correct
44	Correct	481 ms	56952 KB	Output is correct
45	Correct	11 ms	10112 KB	Output is correct
46	Correct	12 ms	10112 KB	Output is correct
47	Correct	26 ms	11392 KB	Output is correct
48	Correct	22 ms	11520 KB	Output is correct
49	Correct	23 ms	11008 KB	Output is correct
50	Correct	143 ms	15220 KB	Output is correct
51	Correct	257 ms	37240 KB	Output is correct
52	Correct	123 ms	13816 KB	Output is correct
53	Correct	30 ms	11264 KB	Output is correct
54	Correct	131 ms	14444 KB	Output is correct
55	Correct	22 ms	10368 KB	Output is correct
56	Correct	23 ms	10368 KB	Output is correct
57	Correct	20 ms	10368 KB	Output is correct
58	Correct	21 ms	10368 KB	Output is correct
59	Correct	12 ms	10112 KB	Output is correct
60	Correct	88 ms	12468 KB	Output is correct
61	Correct	43 ms	15352 KB	Output is correct
62	Correct	147 ms	14556 KB	Output is correct
63	Correct	494 ms	42516 KB	Output is correct
64	Correct	628 ms	42888 KB	Output is correct
65	Correct	558 ms	43020 KB	Output is correct
66	Correct	166 ms	28492 KB	Output is correct
67	Correct	367 ms	33116 KB	Output is correct
68	Correct	168 ms	28452 KB	Output is correct
69	Execution timed out	5069 ms	453692 KB	Time limit exceeded
70	Halted	0 ms	0 KB	-

Submission #269459

Compilation message

Subtask #1 1.0 / 1.0

Subtask #2 16.0 / 16.0

Subtask #3 0 / 83.0

Subtask #1
1.0 / 1.0

Subtask #2
16.0 / 16.0

Subtask #3
0 / 83.0