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답안 #418473

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
418473 2021-06-05T11:48:48 Z ngpin04 조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2) C++14
100 / 100
 794 ms 56120 KB 
#include <bits/stdc++.h>
#define fi first
#define se second
#define mp make_pair
using namespace std;
const int N = 1e5 + 5; 
const int T = 1000;

multiset <int> in[N], out[N];

vector <int> node[N];

long long ans;

int par[N];
int n,m;

int getpar(int u) {
	return (par[u] < 0) ? u : (par[u] = getpar(par[u]));
}

void join(int u, int v) {
	u = getpar(u);
	v = getpar(v);
	if (u == v)
		return;
	if (in[u].size() + out[u].size() + node[u].size() < in[v].size() + out[v].size() + node[v].size())
		swap(u, v);

	// cerr << u << " " << v << "\n";
	ans += 2LL * par[u] * par[v];
	out[u].erase(v);
	for  (int x : node[v]) {
		if (in[u].count(x)) {
			in[u].erase(x);
			ans -= (-par[u]);
		}
		node[u].push_back(x);
	}

	ans += (long long) in[u].size() * (-par[v]);

	vector <int> add;

	for (int x : in[v]) {
		int px = getpar(x);
		if (px == u) 
			ans -= (-par[v]);
		else if (!in[u].count(x)) {
			out[px].erase(out[px].find(v));
			out[px].insert(u);
			in[u].insert(x);
			ans += (-par[u]);
			if (out[u].count(px))
				add.push_back(px);
		} else 
			ans -= (-par[v]);
	}

	for (int x : out[v]) if (x != u) {
		out[u].insert(x);
		if (out[x].count(u))
			add.push_back(x);
	}

	par[u] += par[v];
	par[v] = u;

	for (int x : add)
		join(u, x);
}

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cin >> n >> m;
	for (int i = 1; i <= n; i++) {
		node[i].push_back(i);
		par[i] = -1;
	}

	for (int i = 1; i <= m; i++) {
		int u,v;
		cin >> u >> v;
		int pu = getpar(u);
		int pv = getpar(v);
		if (pu != pv && !in[pv].count(u)) {
			in[pv].insert(u);
			out[pu].insert(pv);
			ans += -par[pv];
			if (out[pv].count(pu))
				join(pu, pv);
		}
		cout << ans << "\n";
	}
	return 0;
}

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 11980 KB Output is correct
2 Correct 7 ms 11980 KB Output is correct
3 Correct 7 ms 12060 KB Output is correct
4 Correct 7 ms 12040 KB Output is correct
5 Correct 7 ms 12032 KB Output is correct
6 Correct 7 ms 11964 KB Output is correct
7 Correct 8 ms 11980 KB Output is correct
8 Correct 8 ms 12012 KB Output is correct
9 Correct 8 ms 12108 KB Output is correct
10 Correct 7 ms 11980 KB Output is correct
11 Correct 7 ms 11980 KB Output is correct
12 Correct 7 ms 11980 KB Output is correct
13 Correct 7 ms 11980 KB Output is correct
14 Correct 7 ms 12064 KB Output is correct
15 Correct 7 ms 12032 KB Output is correct
16 Correct 7 ms 11980 KB Output is correct
17 Correct 7 ms 11980 KB Output is correct
18 Correct 7 ms 11980 KB Output is correct
19 Correct 7 ms 12060 KB Output is correct
20 Correct 7 ms 11980 KB Output is correct
21 Correct 9 ms 12060 KB Output is correct
22 Correct 7 ms 12056 KB Output is correct
23 Correct 8 ms 11980 KB Output is correct
24 Correct 7 ms 12060 KB Output is correct
25 Correct 8 ms 11980 KB Output is correct
26 Correct 7 ms 11980 KB Output is correct
27 Correct 7 ms 11980 KB Output is correct
28 Correct 8 ms 11980 KB Output is correct
29 Correct 7 ms 11980 KB Output is correct
30 Correct 7 ms 12044 KB Output is correct
31 Correct 8 ms 11980 KB Output is correct
32 Correct 7 ms 12012 KB Output is correct
33 Correct 8 ms 12080 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 11980 KB Output is correct
2 Correct 7 ms 11980 KB Output is correct
3 Correct 7 ms 12060 KB Output is correct
4 Correct 7 ms 12040 KB Output is correct
5 Correct 7 ms 12032 KB Output is correct
6 Correct 7 ms 11964 KB Output is correct
7 Correct 8 ms 11980 KB Output is correct
8 Correct 8 ms 12012 KB Output is correct
9 Correct 8 ms 12108 KB Output is correct
10 Correct 7 ms 11980 KB Output is correct
11 Correct 7 ms 11980 KB Output is correct
12 Correct 7 ms 11980 KB Output is correct
13 Correct 7 ms 11980 KB Output is correct
14 Correct 7 ms 12064 KB Output is correct
15 Correct 7 ms 12032 KB Output is correct
16 Correct 7 ms 11980 KB Output is correct
17 Correct 7 ms 11980 KB Output is correct
18 Correct 7 ms 11980 KB Output is correct
19 Correct 7 ms 12060 KB Output is correct
20 Correct 7 ms 11980 KB Output is correct
21 Correct 9 ms 12060 KB Output is correct
22 Correct 7 ms 12056 KB Output is correct
23 Correct 8 ms 11980 KB Output is correct
24 Correct 7 ms 12060 KB Output is correct
25 Correct 8 ms 11980 KB Output is correct
26 Correct 7 ms 11980 KB Output is correct
27 Correct 7 ms 11980 KB Output is correct
28 Correct 8 ms 11980 KB Output is correct
29 Correct 7 ms 11980 KB Output is correct
30 Correct 7 ms 12044 KB Output is correct
31 Correct 8 ms 11980 KB Output is correct
32 Correct 7 ms 12012 KB Output is correct
33 Correct 8 ms 12080 KB Output is correct
34 Correct 10 ms 12096 KB Output is correct
35 Correct 99 ms 17588 KB Output is correct
36 Correct 123 ms 20040 KB Output is correct
37 Correct 125 ms 20208 KB Output is correct
38 Correct 119 ms 19872 KB Output is correct
39 Correct 9 ms 12364 KB Output is correct
40 Correct 10 ms 12424 KB Output is correct
41 Correct 10 ms 12452 KB Output is correct
42 Correct 10 ms 12328 KB Output is correct
43 Correct 10 ms 12364 KB Output is correct
44 Correct 10 ms 12328 KB Output is correct
45 Correct 10 ms 12280 KB Output is correct
46 Correct 9 ms 12364 KB Output is correct
47 Correct 10 ms 12448 KB Output is correct
48 Correct 10 ms 12364 KB Output is correct
49 Correct 17 ms 13072 KB Output is correct
50 Correct 122 ms 20260 KB Output is correct
51 Correct 13 ms 12620 KB Output is correct
52 Correct 109 ms 18756 KB Output is correct
53 Correct 16 ms 13024 KB Output is correct
54 Correct 115 ms 19524 KB Output is correct
55 Correct 11 ms 12584 KB Output is correct
56 Correct 11 ms 12528 KB Output is correct
57 Correct 11 ms 12876 KB Output is correct
58 Correct 11 ms 12948 KB Output is correct
59 Correct 9 ms 12364 KB Output is correct
60 Correct 100 ms 17376 KB Output is correct
61 Correct 12 ms 12432 KB Output is correct
62 Correct 120 ms 19744 KB Output is correct

Subtask #3
83.0 / 83.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 11980 KB Output is correct
2 Correct 7 ms 11980 KB Output is correct
3 Correct 7 ms 12060 KB Output is correct
4 Correct 7 ms 12040 KB Output is correct
5 Correct 7 ms 12032 KB Output is correct
6 Correct 7 ms 11964 KB Output is correct
7 Correct 8 ms 11980 KB Output is correct
8 Correct 8 ms 12012 KB Output is correct
9 Correct 8 ms 12108 KB Output is correct
10 Correct 7 ms 11980 KB Output is correct
11 Correct 7 ms 11980 KB Output is correct
12 Correct 7 ms 11980 KB Output is correct
13 Correct 7 ms 11980 KB Output is correct
14 Correct 7 ms 12064 KB Output is correct
15 Correct 7 ms 12032 KB Output is correct
16 Correct 7 ms 11980 KB Output is correct
17 Correct 7 ms 11980 KB Output is correct
18 Correct 7 ms 11980 KB Output is correct
19 Correct 7 ms 12060 KB Output is correct
20 Correct 7 ms 11980 KB Output is correct
21 Correct 9 ms 12060 KB Output is correct
22 Correct 7 ms 12056 KB Output is correct
23 Correct 8 ms 11980 KB Output is correct
24 Correct 7 ms 12060 KB Output is correct
25 Correct 8 ms 11980 KB Output is correct
26 Correct 7 ms 11980 KB Output is correct
27 Correct 7 ms 11980 KB Output is correct
28 Correct 8 ms 11980 KB Output is correct
29 Correct 7 ms 11980 KB Output is correct
30 Correct 7 ms 12044 KB Output is correct
31 Correct 8 ms 11980 KB Output is correct
32 Correct 7 ms 12012 KB Output is correct
33 Correct 8 ms 12080 KB Output is correct
34 Correct 10 ms 12096 KB Output is correct
35 Correct 99 ms 17588 KB Output is correct
36 Correct 123 ms 20040 KB Output is correct
37 Correct 125 ms 20208 KB Output is correct
38 Correct 119 ms 19872 KB Output is correct
39 Correct 9 ms 12364 KB Output is correct
40 Correct 10 ms 12424 KB Output is correct
41 Correct 10 ms 12452 KB Output is correct
42 Correct 10 ms 12328 KB Output is correct
43 Correct 10 ms 12364 KB Output is correct
44 Correct 10 ms 12328 KB Output is correct
45 Correct 10 ms 12280 KB Output is correct
46 Correct 9 ms 12364 KB Output is correct
47 Correct 10 ms 12448 KB Output is correct
48 Correct 10 ms 12364 KB Output is correct
49 Correct 17 ms 13072 KB Output is correct
50 Correct 122 ms 20260 KB Output is correct
51 Correct 13 ms 12620 KB Output is correct
52 Correct 109 ms 18756 KB Output is correct
53 Correct 16 ms 13024 KB Output is correct
54 Correct 115 ms 19524 KB Output is correct
55 Correct 11 ms 12584 KB Output is correct
56 Correct 11 ms 12528 KB Output is correct
57 Correct 11 ms 12876 KB Output is correct
58 Correct 11 ms 12948 KB Output is correct
59 Correct 9 ms 12364 KB Output is correct
60 Correct 100 ms 17376 KB Output is correct
61 Correct 12 ms 12432 KB Output is correct
62 Correct 120 ms 19744 KB Output is correct
63 Correct 419 ms 49244 KB Output is correct
64 Correct 446 ms 49072 KB Output is correct
65 Correct 432 ms 49084 KB Output is correct
66 Correct 164 ms 29756 KB Output is correct
67 Correct 289 ms 35572 KB Output is correct
68 Correct 162 ms 29756 KB Output is correct
69 Correct 346 ms 29788 KB Output is correct
70 Correct 174 ms 29756 KB Output is correct
71 Correct 163 ms 29752 KB Output is correct
72 Correct 344 ms 32728 KB Output is correct
73 Correct 317 ms 32980 KB Output is correct
74 Correct 794 ms 54464 KB Output is correct
75 Correct 490 ms 35692 KB Output is correct
76 Correct 615 ms 42944 KB Output is correct
77 Correct 558 ms 42944 KB Output is correct
78 Correct 181 ms 29636 KB Output is correct
79 Correct 367 ms 36320 KB Output is correct
80 Correct 190 ms 29580 KB Output is correct
81 Correct 309 ms 34196 KB Output is correct
82 Correct 457 ms 40412 KB Output is correct
83 Correct 508 ms 40548 KB Output is correct
84 Correct 425 ms 56120 KB Output is correct
85 Correct 430 ms 56120 KB Output is correct
86 Correct 208 ms 33688 KB Output is correct
87 Correct 233 ms 35768 KB Output is correct
88 Correct 323 ms 32924 KB Output is correct
89 Correct 533 ms 41624 KB Output is correct