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답안 #871660

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
871660 2023-11-11T08:42:39 Z AmirAli_H1 조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2) C++17
100 / 100
 701 ms 123928 KB 
// In the name of Allah
 
#include <bits/stdc++.h>
using namespace std;
 
typedef 	long long int			ll;
typedef 	long double				ld;
typedef 	pair<int, int>			pii;
typedef 	pair<ll, ll>			pll;
 
#define 	all(x)					(x).begin(),(x).end()
#define 	len(x)					((ll) (x).size())
#define 	F						first
#define 	S						second
#define 	pb						push_back
#define 	sep						' '
#define 	endl					'\n'
#define 	Mp						make_pair
#define 	kill(x)					cout << x << '\n', exit(0)
#define 	set_dec(x)				cout << fixed << setprecision(x);
#define 	file_io(x,y)			freopen(x, "r", stdin); freopen(y, "w", stdout);
 
int n, q;
const int maxn = 4e5 + 4;
bool mark[maxn]; queue<int> qu;
int p[maxn]; ll val[maxn]; vector<pii> E;
vector<int> ls[maxn]; set<int> A[maxn];
set<int> adj[maxn], adjr[maxn]; ll res = 0;
 
ll cal(ll sz, ll t) {
	return (sz * t) + sz * (sz - 1);
}
 
void upd(int a) {
	res -= val[a];
	val[a] = cal(len(ls[a]), len(A[a]));
	res += val[a];
}

int get(int a) {
	return p[a];
}

bool ok(int a, int b) {
	a = get(a); b = get(b);
	if (a != b && adj[a].find(b) != adj[a].end() && adj[b].find(a) != adj[b].end()) return 1;
	return 0;
}
 
void merge(int a1, int b1) {
	qu.push(b1); mark[b1] = 1;
	
	while (!qu.empty()) {
		int b1 = qu.front(); mark[b1] = 0;
		qu.pop();
		
		int a = get(a1), b = get(b1);
		if (a == b) continue;
		
		if (len(ls[a]) > len(ls[b])) swap(a, b);
		
		for (int v : A[a]) {
			if (p[v] == a || p[v] == b) continue;
			A[b].insert(v);
		}
		A[a].clear();
		
		for (int v : ls[a]) {
			p[v] = b; ls[b].pb(v);
			A[b].erase(v);
		}
		ls[a].clear();
		
		for (int v : adj[a]) {
			if (v == a || v == b) continue;
			adj[b].insert(v);
			adjr[v].erase(a); adjr[v].insert(b);
		}
		for (int v : adjr[a]) {
			if (v == a || v == b) continue;
			adjr[b].insert(v);
			adj[v].erase(a); adj[v].insert(b);
		}
		adj[b].erase(a); adjr[b].erase(a);
		
		for (int v : adj[a]) {
			if (ok(b, v) && !mark[v]) {
				qu.push(v); mark[v] = 1;
			}
		}
		for (int v : adjr[a]) {
			if (ok(b, v) && !mark[v]) {
				qu.push(v); mark[v] = 1;
			}
		}
		adj[a].clear(); adjr[a].clear();
		
		upd(a), upd(b);
	}
}
 
int main() {
	ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
	
	cin >> n >> q;
	for (int i = 0; i < n; i++) {
		p[i] = i; ls[i].pb(i);
	}
	
	for (int i = 0; i < q; i++) {
		int u1, v1;
		cin >> u1 >> v1; u1--; v1--;
		E.pb(Mp(u1, v1));
		
		int u = get(u1), v = get(v1);
		if (u == v) {
			cout << res << endl;
			continue;
		}
		
		A[v].insert(u1);
		upd(v);
		
		adj[u].insert(v); adjr[v].insert(u);
		if (ok(u, v)) merge(u, v);
		
		cout << res << endl;
	}
	
	return 0;
}

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 68188 KB Output is correct
2 Correct 13 ms 68352 KB Output is correct
3 Correct 14 ms 68352 KB Output is correct
4 Correct 13 ms 68604 KB Output is correct
5 Correct 13 ms 68348 KB Output is correct
6 Correct 13 ms 68352 KB Output is correct
7 Correct 13 ms 68188 KB Output is correct
8 Correct 14 ms 68288 KB Output is correct
9 Correct 15 ms 68188 KB Output is correct
10 Correct 14 ms 68188 KB Output is correct
11 Correct 16 ms 68444 KB Output is correct
12 Correct 13 ms 68188 KB Output is correct
13 Correct 14 ms 68188 KB Output is correct
14 Correct 13 ms 68184 KB Output is correct
15 Correct 13 ms 68284 KB Output is correct
16 Correct 13 ms 68184 KB Output is correct
17 Correct 14 ms 68312 KB Output is correct
18 Correct 13 ms 68184 KB Output is correct
19 Correct 14 ms 68188 KB Output is correct
20 Correct 13 ms 68188 KB Output is correct
21 Correct 13 ms 68300 KB Output is correct
22 Correct 14 ms 68188 KB Output is correct
23 Correct 14 ms 68408 KB Output is correct
24 Correct 15 ms 68380 KB Output is correct
25 Correct 15 ms 68408 KB Output is correct
26 Correct 14 ms 68188 KB Output is correct
27 Correct 15 ms 68188 KB Output is correct
28 Correct 14 ms 68188 KB Output is correct
29 Correct 13 ms 68440 KB Output is correct
30 Correct 14 ms 68188 KB Output is correct
31 Correct 15 ms 68188 KB Output is correct
32 Correct 14 ms 68352 KB Output is correct
33 Correct 13 ms 68184 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 68188 KB Output is correct
2 Correct 13 ms 68352 KB Output is correct
3 Correct 14 ms 68352 KB Output is correct
4 Correct 13 ms 68604 KB Output is correct
5 Correct 13 ms 68348 KB Output is correct
6 Correct 13 ms 68352 KB Output is correct
7 Correct 13 ms 68188 KB Output is correct
8 Correct 14 ms 68288 KB Output is correct
9 Correct 15 ms 68188 KB Output is correct
10 Correct 14 ms 68188 KB Output is correct
11 Correct 16 ms 68444 KB Output is correct
12 Correct 13 ms 68188 KB Output is correct
13 Correct 14 ms 68188 KB Output is correct
14 Correct 13 ms 68184 KB Output is correct
15 Correct 13 ms 68284 KB Output is correct
16 Correct 13 ms 68184 KB Output is correct
17 Correct 14 ms 68312 KB Output is correct
18 Correct 13 ms 68184 KB Output is correct
19 Correct 14 ms 68188 KB Output is correct
20 Correct 13 ms 68188 KB Output is correct
21 Correct 13 ms 68300 KB Output is correct
22 Correct 14 ms 68188 KB Output is correct
23 Correct 14 ms 68408 KB Output is correct
24 Correct 15 ms 68380 KB Output is correct
25 Correct 15 ms 68408 KB Output is correct
26 Correct 14 ms 68188 KB Output is correct
27 Correct 15 ms 68188 KB Output is correct
28 Correct 14 ms 68188 KB Output is correct
29 Correct 13 ms 68440 KB Output is correct
30 Correct 14 ms 68188 KB Output is correct
31 Correct 15 ms 68188 KB Output is correct
32 Correct 14 ms 68352 KB Output is correct
33 Correct 13 ms 68184 KB Output is correct
34 Correct 15 ms 68696 KB Output is correct
35 Correct 76 ms 78380 KB Output is correct
36 Correct 99 ms 81340 KB Output is correct
37 Correct 89 ms 80832 KB Output is correct
38 Correct 86 ms 80732 KB Output is correct
39 Correct 14 ms 68444 KB Output is correct
40 Correct 15 ms 68444 KB Output is correct
41 Correct 17 ms 68444 KB Output is correct
42 Correct 14 ms 68440 KB Output is correct
43 Correct 16 ms 68440 KB Output is correct
44 Correct 16 ms 68444 KB Output is correct
45 Correct 15 ms 68444 KB Output is correct
46 Correct 15 ms 68444 KB Output is correct
47 Correct 16 ms 68444 KB Output is correct
48 Correct 16 ms 68444 KB Output is correct
49 Correct 21 ms 69212 KB Output is correct
50 Correct 89 ms 82356 KB Output is correct
51 Correct 19 ms 68956 KB Output is correct
52 Correct 77 ms 79656 KB Output is correct
53 Correct 21 ms 69212 KB Output is correct
54 Correct 83 ms 80680 KB Output is correct
55 Correct 18 ms 68956 KB Output is correct
56 Correct 18 ms 69084 KB Output is correct
57 Correct 19 ms 68952 KB Output is correct
58 Correct 17 ms 68956 KB Output is correct
59 Correct 16 ms 68444 KB Output is correct
60 Correct 70 ms 77760 KB Output is correct
61 Correct 19 ms 68584 KB Output is correct
62 Correct 83 ms 79816 KB Output is correct

Subtask #3
83.0 / 83.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 68188 KB Output is correct
2 Correct 13 ms 68352 KB Output is correct
3 Correct 14 ms 68352 KB Output is correct
4 Correct 13 ms 68604 KB Output is correct
5 Correct 13 ms 68348 KB Output is correct
6 Correct 13 ms 68352 KB Output is correct
7 Correct 13 ms 68188 KB Output is correct
8 Correct 14 ms 68288 KB Output is correct
9 Correct 15 ms 68188 KB Output is correct
10 Correct 14 ms 68188 KB Output is correct
11 Correct 16 ms 68444 KB Output is correct
12 Correct 13 ms 68188 KB Output is correct
13 Correct 14 ms 68188 KB Output is correct
14 Correct 13 ms 68184 KB Output is correct
15 Correct 13 ms 68284 KB Output is correct
16 Correct 13 ms 68184 KB Output is correct
17 Correct 14 ms 68312 KB Output is correct
18 Correct 13 ms 68184 KB Output is correct
19 Correct 14 ms 68188 KB Output is correct
20 Correct 13 ms 68188 KB Output is correct
21 Correct 13 ms 68300 KB Output is correct
22 Correct 14 ms 68188 KB Output is correct
23 Correct 14 ms 68408 KB Output is correct
24 Correct 15 ms 68380 KB Output is correct
25 Correct 15 ms 68408 KB Output is correct
26 Correct 14 ms 68188 KB Output is correct
27 Correct 15 ms 68188 KB Output is correct
28 Correct 14 ms 68188 KB Output is correct
29 Correct 13 ms 68440 KB Output is correct
30 Correct 14 ms 68188 KB Output is correct
31 Correct 15 ms 68188 KB Output is correct
32 Correct 14 ms 68352 KB Output is correct
33 Correct 13 ms 68184 KB Output is correct
34 Correct 15 ms 68696 KB Output is correct
35 Correct 76 ms 78380 KB Output is correct
36 Correct 99 ms 81340 KB Output is correct
37 Correct 89 ms 80832 KB Output is correct
38 Correct 86 ms 80732 KB Output is correct
39 Correct 14 ms 68444 KB Output is correct
40 Correct 15 ms 68444 KB Output is correct
41 Correct 17 ms 68444 KB Output is correct
42 Correct 14 ms 68440 KB Output is correct
43 Correct 16 ms 68440 KB Output is correct
44 Correct 16 ms 68444 KB Output is correct
45 Correct 15 ms 68444 KB Output is correct
46 Correct 15 ms 68444 KB Output is correct
47 Correct 16 ms 68444 KB Output is correct
48 Correct 16 ms 68444 KB Output is correct
49 Correct 21 ms 69212 KB Output is correct
50 Correct 89 ms 82356 KB Output is correct
51 Correct 19 ms 68956 KB Output is correct
52 Correct 77 ms 79656 KB Output is correct
53 Correct 21 ms 69212 KB Output is correct
54 Correct 83 ms 80680 KB Output is correct
55 Correct 18 ms 68956 KB Output is correct
56 Correct 18 ms 69084 KB Output is correct
57 Correct 19 ms 68952 KB Output is correct
58 Correct 17 ms 68956 KB Output is correct
59 Correct 16 ms 68444 KB Output is correct
60 Correct 70 ms 77760 KB Output is correct
61 Correct 19 ms 68584 KB Output is correct
62 Correct 83 ms 79816 KB Output is correct
63 Correct 479 ms 123860 KB Output is correct
64 Correct 463 ms 123424 KB Output is correct
65 Correct 437 ms 123928 KB Output is correct
66 Correct 113 ms 79032 KB Output is correct
67 Correct 210 ms 86940 KB Output is correct
68 Correct 103 ms 78976 KB Output is correct
69 Correct 292 ms 86024 KB Output is correct
70 Correct 109 ms 78908 KB Output is correct
71 Correct 102 ms 78956 KB Output is correct
72 Correct 264 ms 85688 KB Output is correct
73 Correct 272 ms 85960 KB Output is correct
74 Correct 701 ms 98512 KB Output is correct
75 Correct 372 ms 93664 KB Output is correct
76 Correct 579 ms 99412 KB Output is correct
77 Correct 534 ms 99860 KB Output is correct
78 Correct 173 ms 86720 KB Output is correct
79 Correct 255 ms 93100 KB Output is correct
80 Correct 174 ms 86796 KB Output is correct
81 Correct 271 ms 94140 KB Output is correct
82 Correct 573 ms 106640 KB Output is correct
83 Correct 605 ms 106516 KB Output is correct
84 Correct 483 ms 106512 KB Output is correct
85 Correct 510 ms 106432 KB Output is correct
86 Correct 138 ms 83644 KB Output is correct
87 Correct 162 ms 88712 KB Output is correct
88 Correct 323 ms 85692 KB Output is correct
89 Correct 539 ms 99004 KB Output is correct