답안 #220455

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
220455	2020-04-08T00:51:14 Z	super_j6	조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2)	C++14	100 / 100	652 ms	44612 KB

joitter2

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <vector>
#include <set>
using namespace std;
#define endl '\n'
#define pi pair<int, int>
#define f first
#define s second

const int maxn = 100000;
int n, m;
int par[maxn];
long long sz[maxn];
set<int> ei[maxn];
set<pi> eo[maxn];
long long ret;

int find(int x){
	return x == par[x] ? x : par[x] = find(par[x]);
}

void solve(int u, int v){
	int x = find(u), y = find(v);
	if(x == y) return;
	auto it = eo[y].lower_bound({x, 0});
	if(it != eo[y].end() && (*it).f == x){
		if(ei[x].size() + eo[x].size() < ei[y].size() + eo[y].size()) swap(x, y);
		vector<pi> vo;
		for(pi i : eo[y]){
			ret -= sz[i.f];
			ei[i.f].erase(i.s);
			if(i.f != x) vo.push_back(i);
		}
		eo[y].clear();
		ret += sz[y] * (2 * sz[x] + ei[x].size() - ei[y].size());
		vector<int> vi;
		for(int i : ei[y]){
			int j = find(i);
			eo[j].erase({y, i});
			if(j != x) vi.push_back(i);
		}
		ei[y].clear();
		par[y] = x, sz[x] += sz[y];
		for(int i : vi) solve(i, x);
		for(pi i : vo) solve(i.s, i.f);
	}else if(!ei[y].count(u)){
		ret += sz[y];
		ei[y].insert(u);
		eo[x].insert({y, u});
	}
}

int main(){
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	
	cin >> n >> m;
	
	for(int i = 0; i < n; i++) par[i] = i, sz[i] = 1;
	for(int i = 0; i < m; i++){
		int u, v;
		cin >> u >> v;
		u--, v--;
		solve(u, v);
		cout << ret << endl;
	}

	return 0;
}

Subtask #1
1.0 / 1.0

#	결과	실행 시간	메모리	Grader output
1	Correct	10 ms	9728 KB	Output is correct
2	Correct	10 ms	9728 KB	Output is correct
3	Correct	10 ms	9728 KB	Output is correct
4	Correct	10 ms	9728 KB	Output is correct
5	Correct	10 ms	9728 KB	Output is correct
6	Correct	10 ms	9728 KB	Output is correct
7	Correct	11 ms	9728 KB	Output is correct
8	Correct	11 ms	9856 KB	Output is correct
9	Correct	11 ms	9856 KB	Output is correct
10	Correct	10 ms	9728 KB	Output is correct
11	Correct	10 ms	9704 KB	Output is correct
12	Correct	11 ms	9676 KB	Output is correct
13	Correct	11 ms	9728 KB	Output is correct
14	Correct	10 ms	9728 KB	Output is correct
15	Correct	10 ms	9728 KB	Output is correct
16	Correct	10 ms	9728 KB	Output is correct
17	Correct	10 ms	9728 KB	Output is correct
18	Correct	10 ms	9728 KB	Output is correct
19	Correct	10 ms	9728 KB	Output is correct
20	Correct	10 ms	9728 KB	Output is correct
21	Correct	11 ms	9856 KB	Output is correct
22	Correct	10 ms	9728 KB	Output is correct
23	Correct	11 ms	9728 KB	Output is correct
24	Correct	10 ms	9728 KB	Output is correct
25	Correct	10 ms	9728 KB	Output is correct
26	Correct	10 ms	9728 KB	Output is correct
27	Correct	10 ms	9728 KB	Output is correct
28	Correct	10 ms	9728 KB	Output is correct
29	Correct	11 ms	9728 KB	Output is correct
30	Correct	10 ms	9728 KB	Output is correct
31	Correct	11 ms	9856 KB	Output is correct
32	Correct	10 ms	9728 KB	Output is correct
33	Correct	11 ms	9728 KB	Output is correct

Subtask #2
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	10 ms	9728 KB	Output is correct
2	Correct	10 ms	9728 KB	Output is correct
3	Correct	10 ms	9728 KB	Output is correct
4	Correct	10 ms	9728 KB	Output is correct
5	Correct	10 ms	9728 KB	Output is correct
6	Correct	10 ms	9728 KB	Output is correct
7	Correct	11 ms	9728 KB	Output is correct
8	Correct	11 ms	9856 KB	Output is correct
9	Correct	11 ms	9856 KB	Output is correct
10	Correct	10 ms	9728 KB	Output is correct
11	Correct	10 ms	9704 KB	Output is correct
12	Correct	11 ms	9676 KB	Output is correct
13	Correct	11 ms	9728 KB	Output is correct
14	Correct	10 ms	9728 KB	Output is correct
15	Correct	10 ms	9728 KB	Output is correct
16	Correct	10 ms	9728 KB	Output is correct
17	Correct	10 ms	9728 KB	Output is correct
18	Correct	10 ms	9728 KB	Output is correct
19	Correct	10 ms	9728 KB	Output is correct
20	Correct	10 ms	9728 KB	Output is correct
21	Correct	11 ms	9856 KB	Output is correct
22	Correct	10 ms	9728 KB	Output is correct
23	Correct	11 ms	9728 KB	Output is correct
24	Correct	10 ms	9728 KB	Output is correct
25	Correct	10 ms	9728 KB	Output is correct
26	Correct	10 ms	9728 KB	Output is correct
27	Correct	10 ms	9728 KB	Output is correct
28	Correct	10 ms	9728 KB	Output is correct
29	Correct	11 ms	9728 KB	Output is correct
30	Correct	10 ms	9728 KB	Output is correct
31	Correct	11 ms	9856 KB	Output is correct
32	Correct	10 ms	9728 KB	Output is correct
33	Correct	11 ms	9728 KB	Output is correct
34	Correct	14 ms	9856 KB	Output is correct
35	Correct	91 ms	15096 KB	Output is correct
36	Correct	111 ms	17400 KB	Output is correct
37	Correct	116 ms	17400 KB	Output is correct
38	Correct	104 ms	17144 KB	Output is correct
39	Correct	11 ms	9856 KB	Output is correct
40	Correct	12 ms	9900 KB	Output is correct
41	Correct	12 ms	9984 KB	Output is correct
42	Correct	12 ms	9856 KB	Output is correct
43	Correct	12 ms	9984 KB	Output is correct
44	Correct	12 ms	9984 KB	Output is correct
45	Correct	12 ms	9856 KB	Output is correct
46	Correct	11 ms	9856 KB	Output is correct
47	Correct	12 ms	9984 KB	Output is correct
48	Correct	13 ms	9984 KB	Output is correct
49	Correct	19 ms	10496 KB	Output is correct
50	Correct	108 ms	17400 KB	Output is correct
51	Correct	16 ms	10112 KB	Output is correct
52	Correct	109 ms	16248 KB	Output is correct
53	Correct	17 ms	10496 KB	Output is correct
54	Correct	105 ms	16864 KB	Output is correct
55	Correct	14 ms	10240 KB	Output is correct
56	Correct	14 ms	10240 KB	Output is correct
57	Correct	15 ms	10240 KB	Output is correct
58	Correct	14 ms	10240 KB	Output is correct
59	Correct	11 ms	9856 KB	Output is correct
60	Correct	90 ms	14712 KB	Output is correct
61	Correct	13 ms	9984 KB	Output is correct
62	Correct	105 ms	16888 KB	Output is correct

Subtask #3
83.0 / 83.0

#	결과	실행 시간	메모리	Grader output
1	Correct	10 ms	9728 KB	Output is correct
2	Correct	10 ms	9728 KB	Output is correct
3	Correct	10 ms	9728 KB	Output is correct
4	Correct	10 ms	9728 KB	Output is correct
5	Correct	10 ms	9728 KB	Output is correct
6	Correct	10 ms	9728 KB	Output is correct
7	Correct	11 ms	9728 KB	Output is correct
8	Correct	11 ms	9856 KB	Output is correct
9	Correct	11 ms	9856 KB	Output is correct
10	Correct	10 ms	9728 KB	Output is correct
11	Correct	10 ms	9704 KB	Output is correct
12	Correct	11 ms	9676 KB	Output is correct
13	Correct	11 ms	9728 KB	Output is correct
14	Correct	10 ms	9728 KB	Output is correct
15	Correct	10 ms	9728 KB	Output is correct
16	Correct	10 ms	9728 KB	Output is correct
17	Correct	10 ms	9728 KB	Output is correct
18	Correct	10 ms	9728 KB	Output is correct
19	Correct	10 ms	9728 KB	Output is correct
20	Correct	10 ms	9728 KB	Output is correct
21	Correct	11 ms	9856 KB	Output is correct
22	Correct	10 ms	9728 KB	Output is correct
23	Correct	11 ms	9728 KB	Output is correct
24	Correct	10 ms	9728 KB	Output is correct
25	Correct	10 ms	9728 KB	Output is correct
26	Correct	10 ms	9728 KB	Output is correct
27	Correct	10 ms	9728 KB	Output is correct
28	Correct	10 ms	9728 KB	Output is correct
29	Correct	11 ms	9728 KB	Output is correct
30	Correct	10 ms	9728 KB	Output is correct
31	Correct	11 ms	9856 KB	Output is correct
32	Correct	10 ms	9728 KB	Output is correct
33	Correct	11 ms	9728 KB	Output is correct
34	Correct	14 ms	9856 KB	Output is correct
35	Correct	91 ms	15096 KB	Output is correct
36	Correct	111 ms	17400 KB	Output is correct
37	Correct	116 ms	17400 KB	Output is correct
38	Correct	104 ms	17144 KB	Output is correct
39	Correct	11 ms	9856 KB	Output is correct
40	Correct	12 ms	9900 KB	Output is correct
41	Correct	12 ms	9984 KB	Output is correct
42	Correct	12 ms	9856 KB	Output is correct
43	Correct	12 ms	9984 KB	Output is correct
44	Correct	12 ms	9984 KB	Output is correct
45	Correct	12 ms	9856 KB	Output is correct
46	Correct	11 ms	9856 KB	Output is correct
47	Correct	12 ms	9984 KB	Output is correct
48	Correct	13 ms	9984 KB	Output is correct
49	Correct	19 ms	10496 KB	Output is correct
50	Correct	108 ms	17400 KB	Output is correct
51	Correct	16 ms	10112 KB	Output is correct
52	Correct	109 ms	16248 KB	Output is correct
53	Correct	17 ms	10496 KB	Output is correct
54	Correct	105 ms	16864 KB	Output is correct
55	Correct	14 ms	10240 KB	Output is correct
56	Correct	14 ms	10240 KB	Output is correct
57	Correct	15 ms	10240 KB	Output is correct
58	Correct	14 ms	10240 KB	Output is correct
59	Correct	11 ms	9856 KB	Output is correct
60	Correct	90 ms	14712 KB	Output is correct
61	Correct	13 ms	9984 KB	Output is correct
62	Correct	105 ms	16888 KB	Output is correct
63	Correct	407 ms	44536 KB	Output is correct
64	Correct	406 ms	44612 KB	Output is correct
65	Correct	400 ms	44592 KB	Output is correct
66	Correct	108 ms	15380 KB	Output is correct
67	Correct	175 ms	19192 KB	Output is correct
68	Correct	106 ms	15352 KB	Output is correct
69	Correct	236 ms	20092 KB	Output is correct
70	Correct	113 ms	15352 KB	Output is correct
71	Correct	112 ms	15352 KB	Output is correct
72	Correct	205 ms	19576 KB	Output is correct
73	Correct	213 ms	19320 KB	Output is correct
74	Correct	652 ms	28536 KB	Output is correct
75	Correct	378 ms	24744 KB	Output is correct
76	Correct	499 ms	27724 KB	Output is correct
77	Correct	510 ms	27640 KB	Output is correct
78	Correct	146 ms	18808 KB	Output is correct
79	Correct	271 ms	22520 KB	Output is correct
80	Correct	155 ms	18936 KB	Output is correct
81	Correct	245 ms	22136 KB	Output is correct
82	Correct	449 ms	33304 KB	Output is correct
83	Correct	478 ms	33528 KB	Output is correct
84	Correct	442 ms	33640 KB	Output is correct
85	Correct	421 ms	33576 KB	Output is correct
86	Correct	108 ms	14584 KB	Output is correct
87	Correct	144 ms	16760 KB	Output is correct
88	Correct	208 ms	19448 KB	Output is correct
89	Correct	488 ms	27128 KB	Output is correct

답안 #220455

Compilation message

Subtask #1 1.0 / 1.0

Subtask #2 16.0 / 16.0

Subtask #3 83.0 / 83.0

Subtask #1
1.0 / 1.0

Subtask #2
16.0 / 16.0

Subtask #3
83.0 / 83.0