답안 #269449

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
269449	2020-08-17T07:09:16 Z	임성재(#5102)	조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2)	C++17	17 / 100	5000 ms	58400 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";

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

	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));
		}
		//cout << a << ":: " << Find(i) << "\n";
	}

	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);
}

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));

		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);
		}

		ans = 0;
		for(int j=1; j<=n; j++) {
			if(j != Find(j)) continue;

			//cout << j << " " << sz[j] << " " << in[j].size() << "\n";

			ans += sz[j] * (sz[j] - 1);
			ans += sz[j] * (ll) in[j].size();
		}

		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	7 ms	9728 KB	Output is correct
3	Correct	7 ms	9760 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	8 ms	9728 KB	Output is correct
8	Correct	7 ms	9856 KB	Output is correct
9	Correct	7 ms	9728 KB	Output is correct
10	Correct	7 ms	9728 KB	Output is correct
11	Correct	7 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	7 ms	9728 KB	Output is correct
17	Correct	7 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	9856 KB	Output is correct
24	Correct	7 ms	9728 KB	Output is correct
25	Correct	8 ms	9728 KB	Output is correct
26	Correct	7 ms	9728 KB	Output is correct
27	Correct	7 ms	9728 KB	Output is correct
28	Correct	7 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	9 ms	9728 KB	Output is correct
32	Correct	7 ms	9728 KB	Output is correct
33	Correct	7 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	7 ms	9728 KB	Output is correct
3	Correct	7 ms	9760 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	8 ms	9728 KB	Output is correct
8	Correct	7 ms	9856 KB	Output is correct
9	Correct	7 ms	9728 KB	Output is correct
10	Correct	7 ms	9728 KB	Output is correct
11	Correct	7 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	7 ms	9728 KB	Output is correct
17	Correct	7 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	9856 KB	Output is correct
24	Correct	7 ms	9728 KB	Output is correct
25	Correct	8 ms	9728 KB	Output is correct
26	Correct	7 ms	9728 KB	Output is correct
27	Correct	7 ms	9728 KB	Output is correct
28	Correct	7 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	9 ms	9728 KB	Output is correct
32	Correct	7 ms	9728 KB	Output is correct
33	Correct	7 ms	9728 KB	Output is correct
34	Correct	9 ms	9856 KB	Output is correct
35	Correct	124 ms	14336 KB	Output is correct
36	Correct	272 ms	16312 KB	Output is correct
37	Correct	276 ms	16244 KB	Output is correct
38	Correct	271 ms	16048 KB	Output is correct
39	Correct	61 ms	10104 KB	Output is correct
40	Correct	40 ms	10232 KB	Output is correct
41	Correct	40 ms	10232 KB	Output is correct
42	Correct	59 ms	10108 KB	Output is correct
43	Correct	476 ms	58400 KB	Output is correct
44	Correct	503 ms	56836 KB	Output is correct
45	Correct	57 ms	10092 KB	Output is correct
46	Correct	59 ms	10104 KB	Output is correct
47	Correct	59 ms	11384 KB	Output is correct
48	Correct	51 ms	11640 KB	Output is correct
49	Correct	69 ms	11104 KB	Output is correct
50	Correct	292 ms	16440 KB	Output is correct
51	Correct	281 ms	37324 KB	Output is correct
52	Correct	213 ms	15180 KB	Output is correct
53	Correct	63 ms	11360 KB	Output is correct
54	Correct	236 ms	15736 KB	Output is correct
55	Correct	41 ms	10360 KB	Output is correct
56	Correct	41 ms	10360 KB	Output is correct
57	Correct	39 ms	10360 KB	Output is correct
58	Correct	43 ms	10412 KB	Output is correct
59	Correct	42 ms	10108 KB	Output is correct
60	Correct	139 ms	13816 KB	Output is correct
61	Correct	83 ms	15352 KB	Output is correct
62	Correct	257 ms	15912 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	7 ms	9728 KB	Output is correct
3	Correct	7 ms	9760 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	8 ms	9728 KB	Output is correct
8	Correct	7 ms	9856 KB	Output is correct
9	Correct	7 ms	9728 KB	Output is correct
10	Correct	7 ms	9728 KB	Output is correct
11	Correct	7 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	7 ms	9728 KB	Output is correct
17	Correct	7 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	9856 KB	Output is correct
24	Correct	7 ms	9728 KB	Output is correct
25	Correct	8 ms	9728 KB	Output is correct
26	Correct	7 ms	9728 KB	Output is correct
27	Correct	7 ms	9728 KB	Output is correct
28	Correct	7 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	9 ms	9728 KB	Output is correct
32	Correct	7 ms	9728 KB	Output is correct
33	Correct	7 ms	9728 KB	Output is correct
34	Correct	9 ms	9856 KB	Output is correct
35	Correct	124 ms	14336 KB	Output is correct
36	Correct	272 ms	16312 KB	Output is correct
37	Correct	276 ms	16244 KB	Output is correct
38	Correct	271 ms	16048 KB	Output is correct
39	Correct	61 ms	10104 KB	Output is correct
40	Correct	40 ms	10232 KB	Output is correct
41	Correct	40 ms	10232 KB	Output is correct
42	Correct	59 ms	10108 KB	Output is correct
43	Correct	476 ms	58400 KB	Output is correct
44	Correct	503 ms	56836 KB	Output is correct
45	Correct	57 ms	10092 KB	Output is correct
46	Correct	59 ms	10104 KB	Output is correct
47	Correct	59 ms	11384 KB	Output is correct
48	Correct	51 ms	11640 KB	Output is correct
49	Correct	69 ms	11104 KB	Output is correct
50	Correct	292 ms	16440 KB	Output is correct
51	Correct	281 ms	37324 KB	Output is correct
52	Correct	213 ms	15180 KB	Output is correct
53	Correct	63 ms	11360 KB	Output is correct
54	Correct	236 ms	15736 KB	Output is correct
55	Correct	41 ms	10360 KB	Output is correct
56	Correct	41 ms	10360 KB	Output is correct
57	Correct	39 ms	10360 KB	Output is correct
58	Correct	43 ms	10412 KB	Output is correct
59	Correct	42 ms	10108 KB	Output is correct
60	Correct	139 ms	13816 KB	Output is correct
61	Correct	83 ms	15352 KB	Output is correct
62	Correct	257 ms	15912 KB	Output is correct
63	Execution timed out	5076 ms	12772 KB	Time limit exceeded
64	Halted	0 ms	0 KB	-

답안 #269449

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