답안 #404387

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
404387	2021-05-14T10:15:27 Z	ntabc05101	조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2)	C++14	100 / 100	1232 ms	69000 KB

joitter2

#include<bits/stdc++.h>
using namespace std;

#define f first
#define s second

using ll = long long;

const int mxN = 100000;

int par[mxN + 5];
ll sz[mxN + 5];
ll result = 0;

set<int> ccs[mxN + 5], ou[mxN + 5], in[mxN + 5];
queue< pair<int, int> > to_merge;

void weak_connection(int x, int y) {
	ou[x].insert(y); in[y].insert(x);
	if (ou[y].count(x)) to_merge.emplace(x, y);
}

int tot_sz(int x) {
	return ccs[x].size() + in[x].size() + ou[x].size();
}

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

void unite_set(int x, int y) {
	if (x == y) return ;
	if (tot_sz(x) < tot_sz(y)) swap(x, y);
	
	result += sz[y] * ccs[x].size() + sz[x] * ccs[y].size();
	
	par[y] = x; sz[x] += sz[y];
	
	for (int u: ccs[y]) {
		if (ccs[x].count(u)) result -= sz[x];
		else ccs[x].emplace(u);
	}
	
	ou[x].erase(y); in[x].erase(y);
	ou[y].erase(x); in[y].erase(x);
	for (int u: ou[y]) {
		in[u].erase(y);
		weak_connection(x, u);
	}
	for (int u: in[y]) {
		ou[u].erase(y);
		weak_connection(u, x);
	}
}


int main() {
        cin.tie(0)->sync_with_stdio(0);
        
        int n, m; cin >> n >> m;
        for (int i = 1; i <= n; i++) {
        	par[i] = i;
        	sz[i] = 1;
        	ccs[i].insert(i);
        }
        
        int x, y;
        while (m--) {
        	cin >> x >> y;
        	
        	y = find(y);
        	if (find(x) != y && !ccs[y].count(x)) {
	       		ccs[y].emplace(x);
        		result += sz[y];
        		
        		x = find(x);
        		weak_connection(x, y);
        		while (!to_merge.empty()) {
        			tie(x, y) = to_merge.front();
        			to_merge.pop();
        			
        			unite_set(find(x), find(y));
        		}
        	}
        	
        	cout << result << "\n";
        }

        return 0;
}

/*
4 6
1 2
2 3
3 2
1 3
3 4
4 3
*/

Subtask #1
1.0 / 1.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	14412 KB	Output is correct
2	Correct	10 ms	14412 KB	Output is correct
3	Correct	8 ms	14408 KB	Output is correct
4	Correct	8 ms	14376 KB	Output is correct
5	Correct	10 ms	14412 KB	Output is correct
6	Correct	8 ms	14336 KB	Output is correct
7	Correct	9 ms	14428 KB	Output is correct
8	Correct	9 ms	14412 KB	Output is correct
9	Correct	9 ms	14412 KB	Output is correct
10	Correct	8 ms	14408 KB	Output is correct
11	Correct	8 ms	14412 KB	Output is correct
12	Correct	8 ms	14412 KB	Output is correct
13	Correct	8 ms	14336 KB	Output is correct
14	Correct	8 ms	14412 KB	Output is correct
15	Correct	9 ms	14360 KB	Output is correct
16	Correct	9 ms	14408 KB	Output is correct
17	Correct	9 ms	14412 KB	Output is correct
18	Correct	8 ms	14416 KB	Output is correct
19	Correct	8 ms	14336 KB	Output is correct
20	Correct	9 ms	14412 KB	Output is correct
21	Correct	9 ms	14424 KB	Output is correct
22	Correct	8 ms	14408 KB	Output is correct
23	Correct	8 ms	14416 KB	Output is correct
24	Correct	10 ms	14412 KB	Output is correct
25	Correct	11 ms	14412 KB	Output is correct
26	Correct	9 ms	14408 KB	Output is correct
27	Correct	9 ms	14436 KB	Output is correct
28	Correct	8 ms	14412 KB	Output is correct
29	Correct	8 ms	14368 KB	Output is correct
30	Correct	8 ms	14344 KB	Output is correct
31	Correct	9 ms	14412 KB	Output is correct
32	Correct	8 ms	14332 KB	Output is correct
33	Correct	9 ms	14412 KB	Output is correct

Subtask #2
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	14412 KB	Output is correct
2	Correct	10 ms	14412 KB	Output is correct
3	Correct	8 ms	14408 KB	Output is correct
4	Correct	8 ms	14376 KB	Output is correct
5	Correct	10 ms	14412 KB	Output is correct
6	Correct	8 ms	14336 KB	Output is correct
7	Correct	9 ms	14428 KB	Output is correct
8	Correct	9 ms	14412 KB	Output is correct
9	Correct	9 ms	14412 KB	Output is correct
10	Correct	8 ms	14408 KB	Output is correct
11	Correct	8 ms	14412 KB	Output is correct
12	Correct	8 ms	14412 KB	Output is correct
13	Correct	8 ms	14336 KB	Output is correct
14	Correct	8 ms	14412 KB	Output is correct
15	Correct	9 ms	14360 KB	Output is correct
16	Correct	9 ms	14408 KB	Output is correct
17	Correct	9 ms	14412 KB	Output is correct
18	Correct	8 ms	14416 KB	Output is correct
19	Correct	8 ms	14336 KB	Output is correct
20	Correct	9 ms	14412 KB	Output is correct
21	Correct	9 ms	14424 KB	Output is correct
22	Correct	8 ms	14408 KB	Output is correct
23	Correct	8 ms	14416 KB	Output is correct
24	Correct	10 ms	14412 KB	Output is correct
25	Correct	11 ms	14412 KB	Output is correct
26	Correct	9 ms	14408 KB	Output is correct
27	Correct	9 ms	14436 KB	Output is correct
28	Correct	8 ms	14412 KB	Output is correct
29	Correct	8 ms	14368 KB	Output is correct
30	Correct	8 ms	14344 KB	Output is correct
31	Correct	9 ms	14412 KB	Output is correct
32	Correct	8 ms	14332 KB	Output is correct
33	Correct	9 ms	14412 KB	Output is correct
34	Correct	11 ms	14532 KB	Output is correct
35	Correct	119 ms	20164 KB	Output is correct
36	Correct	131 ms	22992 KB	Output is correct
37	Correct	129 ms	23292 KB	Output is correct
38	Correct	126 ms	22700 KB	Output is correct
39	Correct	14 ms	14688 KB	Output is correct
40	Correct	13 ms	15056 KB	Output is correct
41	Correct	13 ms	15052 KB	Output is correct
42	Correct	11 ms	14680 KB	Output is correct
43	Correct	12 ms	14804 KB	Output is correct
44	Correct	12 ms	14796 KB	Output is correct
45	Correct	11 ms	14680 KB	Output is correct
46	Correct	11 ms	14796 KB	Output is correct
47	Correct	13 ms	14904 KB	Output is correct
48	Correct	13 ms	14936 KB	Output is correct
49	Correct	20 ms	15692 KB	Output is correct
50	Correct	130 ms	23248 KB	Output is correct
51	Correct	16 ms	15060 KB	Output is correct
52	Correct	116 ms	21412 KB	Output is correct
53	Correct	23 ms	15600 KB	Output is correct
54	Correct	122 ms	22292 KB	Output is correct
55	Correct	15 ms	15188 KB	Output is correct
56	Correct	15 ms	15208 KB	Output is correct
57	Correct	14 ms	15064 KB	Output is correct
58	Correct	14 ms	15060 KB	Output is correct
59	Correct	13 ms	15180 KB	Output is correct
60	Correct	103 ms	20196 KB	Output is correct
61	Correct	14 ms	14924 KB	Output is correct
62	Correct	129 ms	22584 KB	Output is correct

Subtask #3
83.0 / 83.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	14412 KB	Output is correct
2	Correct	10 ms	14412 KB	Output is correct
3	Correct	8 ms	14408 KB	Output is correct
4	Correct	8 ms	14376 KB	Output is correct
5	Correct	10 ms	14412 KB	Output is correct
6	Correct	8 ms	14336 KB	Output is correct
7	Correct	9 ms	14428 KB	Output is correct
8	Correct	9 ms	14412 KB	Output is correct
9	Correct	9 ms	14412 KB	Output is correct
10	Correct	8 ms	14408 KB	Output is correct
11	Correct	8 ms	14412 KB	Output is correct
12	Correct	8 ms	14412 KB	Output is correct
13	Correct	8 ms	14336 KB	Output is correct
14	Correct	8 ms	14412 KB	Output is correct
15	Correct	9 ms	14360 KB	Output is correct
16	Correct	9 ms	14408 KB	Output is correct
17	Correct	9 ms	14412 KB	Output is correct
18	Correct	8 ms	14416 KB	Output is correct
19	Correct	8 ms	14336 KB	Output is correct
20	Correct	9 ms	14412 KB	Output is correct
21	Correct	9 ms	14424 KB	Output is correct
22	Correct	8 ms	14408 KB	Output is correct
23	Correct	8 ms	14416 KB	Output is correct
24	Correct	10 ms	14412 KB	Output is correct
25	Correct	11 ms	14412 KB	Output is correct
26	Correct	9 ms	14408 KB	Output is correct
27	Correct	9 ms	14436 KB	Output is correct
28	Correct	8 ms	14412 KB	Output is correct
29	Correct	8 ms	14368 KB	Output is correct
30	Correct	8 ms	14344 KB	Output is correct
31	Correct	9 ms	14412 KB	Output is correct
32	Correct	8 ms	14332 KB	Output is correct
33	Correct	9 ms	14412 KB	Output is correct
34	Correct	11 ms	14532 KB	Output is correct
35	Correct	119 ms	20164 KB	Output is correct
36	Correct	131 ms	22992 KB	Output is correct
37	Correct	129 ms	23292 KB	Output is correct
38	Correct	126 ms	22700 KB	Output is correct
39	Correct	14 ms	14688 KB	Output is correct
40	Correct	13 ms	15056 KB	Output is correct
41	Correct	13 ms	15052 KB	Output is correct
42	Correct	11 ms	14680 KB	Output is correct
43	Correct	12 ms	14804 KB	Output is correct
44	Correct	12 ms	14796 KB	Output is correct
45	Correct	11 ms	14680 KB	Output is correct
46	Correct	11 ms	14796 KB	Output is correct
47	Correct	13 ms	14904 KB	Output is correct
48	Correct	13 ms	14936 KB	Output is correct
49	Correct	20 ms	15692 KB	Output is correct
50	Correct	130 ms	23248 KB	Output is correct
51	Correct	16 ms	15060 KB	Output is correct
52	Correct	116 ms	21412 KB	Output is correct
53	Correct	23 ms	15600 KB	Output is correct
54	Correct	122 ms	22292 KB	Output is correct
55	Correct	15 ms	15188 KB	Output is correct
56	Correct	15 ms	15208 KB	Output is correct
57	Correct	14 ms	15064 KB	Output is correct
58	Correct	14 ms	15060 KB	Output is correct
59	Correct	13 ms	15180 KB	Output is correct
60	Correct	103 ms	20196 KB	Output is correct
61	Correct	14 ms	14924 KB	Output is correct
62	Correct	129 ms	22584 KB	Output is correct
63	Correct	648 ms	68036 KB	Output is correct
64	Correct	624 ms	67928 KB	Output is correct
65	Correct	620 ms	68120 KB	Output is correct
66	Correct	294 ms	34008 KB	Output is correct
67	Correct	532 ms	61092 KB	Output is correct
68	Correct	289 ms	33992 KB	Output is correct
69	Correct	505 ms	35104 KB	Output is correct
70	Correct	327 ms	34080 KB	Output is correct
71	Correct	297 ms	34084 KB	Output is correct
72	Correct	584 ms	45124 KB	Output is correct
73	Correct	570 ms	46692 KB	Output is correct
74	Correct	1232 ms	68576 KB	Output is correct
75	Correct	822 ms	41844 KB	Output is correct
76	Correct	998 ms	53884 KB	Output is correct
77	Correct	1000 ms	54144 KB	Output is correct
78	Correct	316 ms	37720 KB	Output is correct
79	Correct	541 ms	42136 KB	Output is correct
80	Correct	275 ms	36612 KB	Output is correct
81	Correct	496 ms	40164 KB	Output is correct
82	Correct	1032 ms	54628 KB	Output is correct
83	Correct	1050 ms	54584 KB	Output is correct
84	Correct	791 ms	53344 KB	Output is correct
85	Correct	786 ms	53320 KB	Output is correct
86	Correct	429 ms	66768 KB	Output is correct
87	Correct	466 ms	69000 KB	Output is correct
88	Correct	598 ms	45988 KB	Output is correct
89	Correct	940 ms	51880 KB	Output is correct

답안 #404387

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