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답안 #682051

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
682051 2023-01-15T12:39:49 Z Kahou 조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2) C++14
100 / 100
 814 ms 64716 KB 
/* In the name of God, aka Allah */
// let this be mytemp.cpp
#include<bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define endl '\n'
#define mk make_pair
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int N = 1e5 + 50;
int n, m, id[N];
vector<int> vc[N];
set<int> adj[2][N], st[N];
queue<pii> q;
ll ans;

void uniset(int u, int v) {
	u = id[u], v= id[v];
	if (u == v) return;

	if (vc[u].size() < vc[v].size()) swap(u, v);

	ans -= 1ll*st[u].size()*vc[u].size();
	ans -= 1ll*st[v].size()*vc[v].size();

	ans += 2ll*vc[u].size()*vc[v].size();
	
	for (int x:vc[v]) {
		id[x] = u;
		vc[u].push_back(x);
		st[u].erase(x);
	}
	vc[v].clear();
	for (int x:st[v]) {
		if (id[x] != u) {
			st[u].insert(x);
		}
	}
	st[v].clear();

	ans += 1ll*st[u].size()*vc[u].size();
	adj[0][u].erase(v);
	adj[1][u].erase(v);
	for (int x:adj[0][v]) {
		if (x == u) continue;

		adj[1][x].erase(v);
		adj[1][x].insert(u);

		if (adj[1][u].find(x) != adj[1][u].end()) q.push({u, x});
		adj[0][u].insert(x);
	}
	adj[0][v].clear();
	for (int x:adj[1][v]) {
		if (x == u) continue;

		adj[0][x].erase(v);
		adj[0][x].insert(u);

		if (adj[0][u].find(x) != adj[0][u].end()) q.push({u, x});
		adj[1][u].insert(x);
	}
	adj[1][v].clear();
}
void solve() {
	cin >> n >> m;
	for (int u = 1; u <= n; u++) {
		id[u] = u;
		vc[u].push_back(u);
	}
	while (m--) {
		int u, v;
		cin >> u >> v;

		v = id[v];
		if (id[u] != id[v] && st[v].find(u) == st[v].end()) {
			ans += vc[v].size();
			st[v].insert(u);
		}

		u = id[u];
		adj[0][u].insert(v);
		adj[1][v].insert(u);
		if (adj[0][v].find(u) != adj[0][v].end()) q.push({u, v});
		while (q.size()) {
			int x = q.front().F, y = q.front().S;
			q.pop();
			uniset(x, y);
		}
		cout << ans << endl;
	}
}
int main() {
	ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
	solve();
	return 0;
}

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 16724 KB Output is correct
2 Correct 8 ms 16660 KB Output is correct
3 Correct 8 ms 16728 KB Output is correct
4 Correct 9 ms 16724 KB Output is correct
5 Correct 10 ms 16724 KB Output is correct
6 Correct 8 ms 16724 KB Output is correct
7 Correct 8 ms 16780 KB Output is correct
8 Correct 9 ms 16724 KB Output is correct
9 Correct 9 ms 16812 KB Output is correct
10 Correct 8 ms 16700 KB Output is correct
11 Correct 10 ms 16724 KB Output is correct
12 Correct 8 ms 16700 KB Output is correct
13 Correct 9 ms 16676 KB Output is correct
14 Correct 8 ms 16784 KB Output is correct
15 Correct 8 ms 16724 KB Output is correct
16 Correct 8 ms 16696 KB Output is correct
17 Correct 8 ms 16736 KB Output is correct
18 Correct 8 ms 16724 KB Output is correct
19 Correct 8 ms 16724 KB Output is correct
20 Correct 8 ms 16744 KB Output is correct
21 Correct 9 ms 16724 KB Output is correct
22 Correct 8 ms 16724 KB Output is correct
23 Correct 8 ms 16724 KB Output is correct
24 Correct 8 ms 16724 KB Output is correct
25 Correct 11 ms 16724 KB Output is correct
26 Correct 8 ms 16792 KB Output is correct
27 Correct 8 ms 16720 KB Output is correct
28 Correct 8 ms 16724 KB Output is correct
29 Correct 8 ms 16724 KB Output is correct
30 Correct 8 ms 16724 KB Output is correct
31 Correct 9 ms 16724 KB Output is correct
32 Correct 8 ms 16724 KB Output is correct
33 Correct 9 ms 16724 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 16724 KB Output is correct
2 Correct 8 ms 16660 KB Output is correct
3 Correct 8 ms 16728 KB Output is correct
4 Correct 9 ms 16724 KB Output is correct
5 Correct 10 ms 16724 KB Output is correct
6 Correct 8 ms 16724 KB Output is correct
7 Correct 8 ms 16780 KB Output is correct
8 Correct 9 ms 16724 KB Output is correct
9 Correct 9 ms 16812 KB Output is correct
10 Correct 8 ms 16700 KB Output is correct
11 Correct 10 ms 16724 KB Output is correct
12 Correct 8 ms 16700 KB Output is correct
13 Correct 9 ms 16676 KB Output is correct
14 Correct 8 ms 16784 KB Output is correct
15 Correct 8 ms 16724 KB Output is correct
16 Correct 8 ms 16696 KB Output is correct
17 Correct 8 ms 16736 KB Output is correct
18 Correct 8 ms 16724 KB Output is correct
19 Correct 8 ms 16724 KB Output is correct
20 Correct 8 ms 16744 KB Output is correct
21 Correct 9 ms 16724 KB Output is correct
22 Correct 8 ms 16724 KB Output is correct
23 Correct 8 ms 16724 KB Output is correct
24 Correct 8 ms 16724 KB Output is correct
25 Correct 11 ms 16724 KB Output is correct
26 Correct 8 ms 16792 KB Output is correct
27 Correct 8 ms 16720 KB Output is correct
28 Correct 8 ms 16724 KB Output is correct
29 Correct 8 ms 16724 KB Output is correct
30 Correct 8 ms 16724 KB Output is correct
31 Correct 9 ms 16724 KB Output is correct
32 Correct 8 ms 16724 KB Output is correct
33 Correct 9 ms 16724 KB Output is correct
34 Correct 10 ms 16852 KB Output is correct
35 Correct 79 ms 20172 KB Output is correct
36 Correct 100 ms 22516 KB Output is correct
37 Correct 103 ms 22640 KB Output is correct
38 Correct 98 ms 22248 KB Output is correct
39 Correct 9 ms 16900 KB Output is correct
40 Correct 11 ms 16928 KB Output is correct
41 Correct 12 ms 16984 KB Output is correct
42 Correct 10 ms 16852 KB Output is correct
43 Correct 11 ms 16980 KB Output is correct
44 Correct 11 ms 16980 KB Output is correct
45 Correct 11 ms 16852 KB Output is correct
46 Correct 12 ms 16852 KB Output is correct
47 Correct 11 ms 16956 KB Output is correct
48 Correct 11 ms 16992 KB Output is correct
49 Correct 17 ms 17620 KB Output is correct
50 Correct 102 ms 22712 KB Output is correct
51 Correct 14 ms 17224 KB Output is correct
52 Correct 88 ms 21068 KB Output is correct
53 Correct 16 ms 17532 KB Output is correct
54 Correct 93 ms 21884 KB Output is correct
55 Correct 13 ms 17364 KB Output is correct
56 Correct 12 ms 17364 KB Output is correct
57 Correct 13 ms 17364 KB Output is correct
58 Correct 13 ms 17372 KB Output is correct
59 Correct 10 ms 16852 KB Output is correct
60 Correct 76 ms 19252 KB Output is correct
61 Correct 12 ms 17040 KB Output is correct
62 Correct 100 ms 22048 KB Output is correct

Subtask #3
83.0 / 83.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 16724 KB Output is correct
2 Correct 8 ms 16660 KB Output is correct
3 Correct 8 ms 16728 KB Output is correct
4 Correct 9 ms 16724 KB Output is correct
5 Correct 10 ms 16724 KB Output is correct
6 Correct 8 ms 16724 KB Output is correct
7 Correct 8 ms 16780 KB Output is correct
8 Correct 9 ms 16724 KB Output is correct
9 Correct 9 ms 16812 KB Output is correct
10 Correct 8 ms 16700 KB Output is correct
11 Correct 10 ms 16724 KB Output is correct
12 Correct 8 ms 16700 KB Output is correct
13 Correct 9 ms 16676 KB Output is correct
14 Correct 8 ms 16784 KB Output is correct
15 Correct 8 ms 16724 KB Output is correct
16 Correct 8 ms 16696 KB Output is correct
17 Correct 8 ms 16736 KB Output is correct
18 Correct 8 ms 16724 KB Output is correct
19 Correct 8 ms 16724 KB Output is correct
20 Correct 8 ms 16744 KB Output is correct
21 Correct 9 ms 16724 KB Output is correct
22 Correct 8 ms 16724 KB Output is correct
23 Correct 8 ms 16724 KB Output is correct
24 Correct 8 ms 16724 KB Output is correct
25 Correct 11 ms 16724 KB Output is correct
26 Correct 8 ms 16792 KB Output is correct
27 Correct 8 ms 16720 KB Output is correct
28 Correct 8 ms 16724 KB Output is correct
29 Correct 8 ms 16724 KB Output is correct
30 Correct 8 ms 16724 KB Output is correct
31 Correct 9 ms 16724 KB Output is correct
32 Correct 8 ms 16724 KB Output is correct
33 Correct 9 ms 16724 KB Output is correct
34 Correct 10 ms 16852 KB Output is correct
35 Correct 79 ms 20172 KB Output is correct
36 Correct 100 ms 22516 KB Output is correct
37 Correct 103 ms 22640 KB Output is correct
38 Correct 98 ms 22248 KB Output is correct
39 Correct 9 ms 16900 KB Output is correct
40 Correct 11 ms 16928 KB Output is correct
41 Correct 12 ms 16984 KB Output is correct
42 Correct 10 ms 16852 KB Output is correct
43 Correct 11 ms 16980 KB Output is correct
44 Correct 11 ms 16980 KB Output is correct
45 Correct 11 ms 16852 KB Output is correct
46 Correct 12 ms 16852 KB Output is correct
47 Correct 11 ms 16956 KB Output is correct
48 Correct 11 ms 16992 KB Output is correct
49 Correct 17 ms 17620 KB Output is correct
50 Correct 102 ms 22712 KB Output is correct
51 Correct 14 ms 17224 KB Output is correct
52 Correct 88 ms 21068 KB Output is correct
53 Correct 16 ms 17532 KB Output is correct
54 Correct 93 ms 21884 KB Output is correct
55 Correct 13 ms 17364 KB Output is correct
56 Correct 12 ms 17364 KB Output is correct
57 Correct 13 ms 17364 KB Output is correct
58 Correct 13 ms 17372 KB Output is correct
59 Correct 10 ms 16852 KB Output is correct
60 Correct 76 ms 19252 KB Output is correct
61 Correct 12 ms 17040 KB Output is correct
62 Correct 100 ms 22048 KB Output is correct
63 Correct 466 ms 64536 KB Output is correct
64 Correct 462 ms 64716 KB Output is correct
65 Correct 464 ms 64672 KB Output is correct
66 Correct 114 ms 22852 KB Output is correct
67 Correct 255 ms 30588 KB Output is correct
68 Correct 114 ms 22852 KB Output is correct
69 Correct 345 ms 29820 KB Output is correct
70 Correct 111 ms 22832 KB Output is correct
71 Correct 109 ms 22904 KB Output is correct
72 Correct 316 ms 29796 KB Output is correct
73 Correct 315 ms 29920 KB Output is correct
74 Correct 814 ms 39676 KB Output is correct
75 Correct 470 ms 34504 KB Output is correct
76 Correct 651 ms 39040 KB Output is correct
77 Correct 671 ms 39228 KB Output is correct
78 Correct 164 ms 28920 KB Output is correct
79 Correct 270 ms 30756 KB Output is correct
80 Correct 170 ms 29004 KB Output is correct
81 Correct 279 ms 30796 KB Output is correct
82 Correct 774 ms 50488 KB Output is correct
83 Correct 780 ms 50380 KB Output is correct
84 Correct 528 ms 50484 KB Output is correct
85 Correct 528 ms 50348 KB Output is correct
86 Correct 150 ms 27336 KB Output is correct
87 Correct 192 ms 28276 KB Output is correct
88 Correct 337 ms 29780 KB Output is correct
89 Correct 609 ms 38832 KB Output is correct