답안 #269689

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
269689	2020-08-17T08:33:05 Z	임성재(#5102)	조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2)	C++17	17 / 100	5000 ms	44828 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];
int rnk[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;

	if(rnk[a] < rnk[b]) swap(a, b);
	if(rnk[a] == rnk[b]) rnk[a]++;

	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

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	9728 KB	Output is correct
2	Correct	8 ms	9728 KB	Output is correct
3	Correct	8 ms	9728 KB	Output is correct
4	Correct	7 ms	9728 KB	Output is correct
5	Correct	7 ms	9728 KB	Output is correct
6	Correct	7 ms	9728 KB	Output is correct
7	Correct	7 ms	9728 KB	Output is correct
8	Correct	9 ms	9728 KB	Output is correct
9	Correct	7 ms	9856 KB	Output is correct
10	Correct	7 ms	9728 KB	Output is correct
11	Correct	8 ms	9728 KB	Output is correct
12	Correct	8 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	7 ms	9728 KB	Output is correct
17	Correct	9 ms	9728 KB	Output is correct
18	Correct	7 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	7 ms	9856 KB	Output is correct
22	Correct	7 ms	9728 KB	Output is correct
23	Correct	7 ms	9728 KB	Output is correct
24	Correct	7 ms	9728 KB	Output is correct
25	Correct	9 ms	9728 KB	Output is correct
26	Correct	8 ms	9728 KB	Output is correct
27	Correct	8 ms	9728 KB	Output is correct
28	Correct	6 ms	9728 KB	Output is correct
29	Correct	7 ms	9728 KB	Output is correct
30	Correct	6 ms	9728 KB	Output is correct
31	Correct	7 ms	9728 KB	Output is correct
32	Correct	7 ms	9760 KB	Output is correct
33	Correct	8 ms	9728 KB	Output is correct

Subtask #2
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	9728 KB	Output is correct
2	Correct	8 ms	9728 KB	Output is correct
3	Correct	8 ms	9728 KB	Output is correct
4	Correct	7 ms	9728 KB	Output is correct
5	Correct	7 ms	9728 KB	Output is correct
6	Correct	7 ms	9728 KB	Output is correct
7	Correct	7 ms	9728 KB	Output is correct
8	Correct	9 ms	9728 KB	Output is correct
9	Correct	7 ms	9856 KB	Output is correct
10	Correct	7 ms	9728 KB	Output is correct
11	Correct	8 ms	9728 KB	Output is correct
12	Correct	8 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	7 ms	9728 KB	Output is correct
17	Correct	9 ms	9728 KB	Output is correct
18	Correct	7 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	7 ms	9856 KB	Output is correct
22	Correct	7 ms	9728 KB	Output is correct
23	Correct	7 ms	9728 KB	Output is correct
24	Correct	7 ms	9728 KB	Output is correct
25	Correct	9 ms	9728 KB	Output is correct
26	Correct	8 ms	9728 KB	Output is correct
27	Correct	8 ms	9728 KB	Output is correct
28	Correct	6 ms	9728 KB	Output is correct
29	Correct	7 ms	9728 KB	Output is correct
30	Correct	6 ms	9728 KB	Output is correct
31	Correct	7 ms	9728 KB	Output is correct
32	Correct	7 ms	9760 KB	Output is correct
33	Correct	8 ms	9728 KB	Output is correct
34	Correct	10 ms	9856 KB	Output is correct
35	Correct	95 ms	15352 KB	Output is correct
36	Correct	148 ms	17720 KB	Output is correct
37	Correct	137 ms	17524 KB	Output is correct
38	Correct	134 ms	17276 KB	Output is correct
39	Correct	10 ms	10112 KB	Output is correct
40	Correct	11 ms	10240 KB	Output is correct
41	Correct	10 ms	10240 KB	Output is correct
42	Correct	9 ms	10112 KB	Output is correct
43	Correct	20 ms	10112 KB	Output is correct
44	Correct	19 ms	10112 KB	Output is correct
45	Correct	10 ms	10112 KB	Output is correct
46	Correct	9 ms	10112 KB	Output is correct
47	Correct	10 ms	10240 KB	Output is correct
48	Correct	11 ms	10240 KB	Output is correct
49	Correct	23 ms	10880 KB	Output is correct
50	Correct	136 ms	17752 KB	Output is correct
51	Correct	23 ms	10360 KB	Output is correct
52	Correct	123 ms	16348 KB	Output is correct
53	Correct	23 ms	10752 KB	Output is correct
54	Correct	130 ms	17016 KB	Output is correct
55	Correct	20 ms	10368 KB	Output is correct
56	Correct	20 ms	10368 KB	Output is correct
57	Correct	18 ms	10368 KB	Output is correct
58	Correct	18 ms	10360 KB	Output is correct
59	Correct	9 ms	10112 KB	Output is correct
60	Correct	93 ms	15132 KB	Output is correct
61	Correct	13 ms	10368 KB	Output is correct
62	Correct	133 ms	17140 KB	Output is correct

Subtask #3
0 / 83.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	9728 KB	Output is correct
2	Correct	8 ms	9728 KB	Output is correct
3	Correct	8 ms	9728 KB	Output is correct
4	Correct	7 ms	9728 KB	Output is correct
5	Correct	7 ms	9728 KB	Output is correct
6	Correct	7 ms	9728 KB	Output is correct
7	Correct	7 ms	9728 KB	Output is correct
8	Correct	9 ms	9728 KB	Output is correct
9	Correct	7 ms	9856 KB	Output is correct
10	Correct	7 ms	9728 KB	Output is correct
11	Correct	8 ms	9728 KB	Output is correct
12	Correct	8 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	7 ms	9728 KB	Output is correct
17	Correct	9 ms	9728 KB	Output is correct
18	Correct	7 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	7 ms	9856 KB	Output is correct
22	Correct	7 ms	9728 KB	Output is correct
23	Correct	7 ms	9728 KB	Output is correct
24	Correct	7 ms	9728 KB	Output is correct
25	Correct	9 ms	9728 KB	Output is correct
26	Correct	8 ms	9728 KB	Output is correct
27	Correct	8 ms	9728 KB	Output is correct
28	Correct	6 ms	9728 KB	Output is correct
29	Correct	7 ms	9728 KB	Output is correct
30	Correct	6 ms	9728 KB	Output is correct
31	Correct	7 ms	9728 KB	Output is correct
32	Correct	7 ms	9760 KB	Output is correct
33	Correct	8 ms	9728 KB	Output is correct
34	Correct	10 ms	9856 KB	Output is correct
35	Correct	95 ms	15352 KB	Output is correct
36	Correct	148 ms	17720 KB	Output is correct
37	Correct	137 ms	17524 KB	Output is correct
38	Correct	134 ms	17276 KB	Output is correct
39	Correct	10 ms	10112 KB	Output is correct
40	Correct	11 ms	10240 KB	Output is correct
41	Correct	10 ms	10240 KB	Output is correct
42	Correct	9 ms	10112 KB	Output is correct
43	Correct	20 ms	10112 KB	Output is correct
44	Correct	19 ms	10112 KB	Output is correct
45	Correct	10 ms	10112 KB	Output is correct
46	Correct	9 ms	10112 KB	Output is correct
47	Correct	10 ms	10240 KB	Output is correct
48	Correct	11 ms	10240 KB	Output is correct
49	Correct	23 ms	10880 KB	Output is correct
50	Correct	136 ms	17752 KB	Output is correct
51	Correct	23 ms	10360 KB	Output is correct
52	Correct	123 ms	16348 KB	Output is correct
53	Correct	23 ms	10752 KB	Output is correct
54	Correct	130 ms	17016 KB	Output is correct
55	Correct	20 ms	10368 KB	Output is correct
56	Correct	20 ms	10368 KB	Output is correct
57	Correct	18 ms	10368 KB	Output is correct
58	Correct	18 ms	10360 KB	Output is correct
59	Correct	9 ms	10112 KB	Output is correct
60	Correct	93 ms	15132 KB	Output is correct
61	Correct	13 ms	10368 KB	Output is correct
62	Correct	133 ms	17140 KB	Output is correct
63	Correct	467 ms	44644 KB	Output is correct
64	Correct	462 ms	44692 KB	Output is correct
65	Correct	492 ms	44828 KB	Output is correct
66	Correct	260 ms	29432 KB	Output is correct
67	Correct	373 ms	34680 KB	Output is correct
68	Correct	255 ms	29468 KB	Output is correct
69	Execution timed out	5048 ms	18180 KB	Time limit exceeded
70	Halted	0 ms	0 KB	-

답안 #269689

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