답안 #766875

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
766875	2023-06-26T08:27:05 Z	onjo0127	조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2)	C++17	100 / 100	1287 ms	160660 KB

joitter2

#include <bits/stdc++.h>
#define sz(V) ((int)V.size())
using namespace std;
using pii = pair<int, int>;
using ll = long long;

int P[100009];
set<int> I[100009], A[100009], II[100009], OO[100009];
ll ans;

int root(int x) {
	if(P[x] == x) return x;
	return P[x] = root(P[x]);
}

ll f(int x) {
	return 1LL * sz(A[x]) * (sz(I[x]) + sz(A[x]) - 1);
}

void merg(int u, int v) {
	u = root(u); v = root(v);
	if(u == v) return;
	if(sz(A[u]) + sz(I[u]) + sz(II[u]) + sz(OO[u]) > sz(A[v]) + sz(I[v]) + sz(II[v]) + sz(OO[v])) swap(u, v);
	ans -= f(u) + f(v);
	for(auto& it: A[u]) if(I[v].find(it) != I[v].end()) I[v].erase(it);
	for(auto& it: I[u]) if(A[v].find(it) == A[v].end()) I[v].insert(it);
	for(auto& it: A[u]) A[v].insert(it);
	set<int> Q;
	for(auto& it: II[u]) if(it != u && it != v) {
		OO[it].erase(u);
		OO[it].insert(v);
		if(OO[v].find(it) != OO[v].end()) Q.insert(it);
		II[v].insert(it);
	}
	for(auto& it: OO[u]) if(it != u && it != v) {
		II[it].erase(u);
		II[it].insert(v);
		if(II[v].find(it) != II[v].end()) Q.insert(it);
		OO[v].insert(it);
	}
	ans += f(v);
	P[u] = v;
	for(auto& it: Q) merg(v, it);
}

int main() {
	int N, M; scanf("%d%d", &N, &M);
	for(int i=1; i<=N; i++) {
		P[i] = i;
		A[i] = {i};
	}
	while(M--) {
		int u, v; scanf("%d%d", &u, &v);
		int U = root(u), V = root(v);
		if(U != V) {
			ans -= f(V);
			I[V].insert(u);
			II[V].insert(U);
			OO[U].insert(V);
			ans += f(V);
			if(II[U].find(V) != II[U].end()) merg(U, V);
		}
		printf("%lld\n", ans);
	}
	return 0;
}

Compilation message

joitter2.cpp: In function 'int main()':
joitter2.cpp:47:17: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   47 |  int N, M; scanf("%d%d", &N, &M);
      |            ~~~~~^~~~~~~~~~~~~~~~
joitter2.cpp:53:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   53 |   int u, v; scanf("%d%d", &u, &v);
      |             ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	19024 KB	Output is correct
2	Correct	8 ms	19028 KB	Output is correct
3	Correct	8 ms	19028 KB	Output is correct
4	Correct	8 ms	19100 KB	Output is correct
5	Correct	8 ms	19092 KB	Output is correct
6	Correct	8 ms	19096 KB	Output is correct
7	Correct	8 ms	19108 KB	Output is correct
8	Correct	9 ms	19156 KB	Output is correct
9	Correct	9 ms	19152 KB	Output is correct
10	Correct	8 ms	19100 KB	Output is correct
11	Correct	8 ms	19028 KB	Output is correct
12	Correct	10 ms	19076 KB	Output is correct
13	Correct	8 ms	19000 KB	Output is correct
14	Correct	10 ms	19156 KB	Output is correct
15	Correct	8 ms	19028 KB	Output is correct
16	Correct	9 ms	19100 KB	Output is correct
17	Correct	9 ms	19028 KB	Output is correct
18	Correct	9 ms	19104 KB	Output is correct
19	Correct	9 ms	19028 KB	Output is correct
20	Correct	11 ms	19028 KB	Output is correct
21	Correct	9 ms	19156 KB	Output is correct
22	Correct	9 ms	19052 KB	Output is correct
23	Correct	9 ms	19028 KB	Output is correct
24	Correct	8 ms	19028 KB	Output is correct
25	Correct	9 ms	19152 KB	Output is correct
26	Correct	8 ms	19100 KB	Output is correct
27	Correct	8 ms	19104 KB	Output is correct
28	Correct	9 ms	19104 KB	Output is correct
29	Correct	9 ms	19028 KB	Output is correct
30	Correct	9 ms	19028 KB	Output is correct
31	Correct	10 ms	19104 KB	Output is correct
32	Correct	9 ms	19028 KB	Output is correct
33	Correct	9 ms	19068 KB	Output is correct

Subtask #2
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	19024 KB	Output is correct
2	Correct	8 ms	19028 KB	Output is correct
3	Correct	8 ms	19028 KB	Output is correct
4	Correct	8 ms	19100 KB	Output is correct
5	Correct	8 ms	19092 KB	Output is correct
6	Correct	8 ms	19096 KB	Output is correct
7	Correct	8 ms	19108 KB	Output is correct
8	Correct	9 ms	19156 KB	Output is correct
9	Correct	9 ms	19152 KB	Output is correct
10	Correct	8 ms	19100 KB	Output is correct
11	Correct	8 ms	19028 KB	Output is correct
12	Correct	10 ms	19076 KB	Output is correct
13	Correct	8 ms	19000 KB	Output is correct
14	Correct	10 ms	19156 KB	Output is correct
15	Correct	8 ms	19028 KB	Output is correct
16	Correct	9 ms	19100 KB	Output is correct
17	Correct	9 ms	19028 KB	Output is correct
18	Correct	9 ms	19104 KB	Output is correct
19	Correct	9 ms	19028 KB	Output is correct
20	Correct	11 ms	19028 KB	Output is correct
21	Correct	9 ms	19156 KB	Output is correct
22	Correct	9 ms	19052 KB	Output is correct
23	Correct	9 ms	19028 KB	Output is correct
24	Correct	8 ms	19028 KB	Output is correct
25	Correct	9 ms	19152 KB	Output is correct
26	Correct	8 ms	19100 KB	Output is correct
27	Correct	8 ms	19104 KB	Output is correct
28	Correct	9 ms	19104 KB	Output is correct
29	Correct	9 ms	19028 KB	Output is correct
30	Correct	9 ms	19028 KB	Output is correct
31	Correct	10 ms	19104 KB	Output is correct
32	Correct	9 ms	19028 KB	Output is correct
33	Correct	9 ms	19068 KB	Output is correct
34	Correct	10 ms	19216 KB	Output is correct
35	Correct	80 ms	25024 KB	Output is correct
36	Correct	99 ms	28040 KB	Output is correct
37	Correct	103 ms	28192 KB	Output is correct
38	Correct	99 ms	27748 KB	Output is correct
39	Correct	12 ms	19752 KB	Output is correct
40	Correct	17 ms	20820 KB	Output is correct
41	Correct	16 ms	20648 KB	Output is correct
42	Correct	11 ms	19800 KB	Output is correct
43	Correct	13 ms	19816 KB	Output is correct
44	Correct	12 ms	19776 KB	Output is correct
45	Correct	12 ms	19756 KB	Output is correct
46	Correct	12 ms	19716 KB	Output is correct
47	Correct	14 ms	20212 KB	Output is correct
48	Correct	17 ms	20328 KB	Output is correct
49	Correct	19 ms	20904 KB	Output is correct
50	Correct	104 ms	28284 KB	Output is correct
51	Correct	15 ms	20000 KB	Output is correct
52	Correct	91 ms	26568 KB	Output is correct
53	Correct	18 ms	20640 KB	Output is correct
54	Correct	94 ms	27332 KB	Output is correct
55	Correct	13 ms	20052 KB	Output is correct
56	Correct	13 ms	20052 KB	Output is correct
57	Correct	15 ms	20420 KB	Output is correct
58	Correct	14 ms	20436 KB	Output is correct
59	Correct	17 ms	21076 KB	Output is correct
60	Correct	84 ms	25964 KB	Output is correct
61	Correct	15 ms	20128 KB	Output is correct
62	Correct	99 ms	27692 KB	Output is correct

Subtask #3
83.0 / 83.0

#	결과	실행 시간	메모리	Grader output
1	Correct	8 ms	19024 KB	Output is correct
2	Correct	8 ms	19028 KB	Output is correct
3	Correct	8 ms	19028 KB	Output is correct
4	Correct	8 ms	19100 KB	Output is correct
5	Correct	8 ms	19092 KB	Output is correct
6	Correct	8 ms	19096 KB	Output is correct
7	Correct	8 ms	19108 KB	Output is correct
8	Correct	9 ms	19156 KB	Output is correct
9	Correct	9 ms	19152 KB	Output is correct
10	Correct	8 ms	19100 KB	Output is correct
11	Correct	8 ms	19028 KB	Output is correct
12	Correct	10 ms	19076 KB	Output is correct
13	Correct	8 ms	19000 KB	Output is correct
14	Correct	10 ms	19156 KB	Output is correct
15	Correct	8 ms	19028 KB	Output is correct
16	Correct	9 ms	19100 KB	Output is correct
17	Correct	9 ms	19028 KB	Output is correct
18	Correct	9 ms	19104 KB	Output is correct
19	Correct	9 ms	19028 KB	Output is correct
20	Correct	11 ms	19028 KB	Output is correct
21	Correct	9 ms	19156 KB	Output is correct
22	Correct	9 ms	19052 KB	Output is correct
23	Correct	9 ms	19028 KB	Output is correct
24	Correct	8 ms	19028 KB	Output is correct
25	Correct	9 ms	19152 KB	Output is correct
26	Correct	8 ms	19100 KB	Output is correct
27	Correct	8 ms	19104 KB	Output is correct
28	Correct	9 ms	19104 KB	Output is correct
29	Correct	9 ms	19028 KB	Output is correct
30	Correct	9 ms	19028 KB	Output is correct
31	Correct	10 ms	19104 KB	Output is correct
32	Correct	9 ms	19028 KB	Output is correct
33	Correct	9 ms	19068 KB	Output is correct
34	Correct	10 ms	19216 KB	Output is correct
35	Correct	80 ms	25024 KB	Output is correct
36	Correct	99 ms	28040 KB	Output is correct
37	Correct	103 ms	28192 KB	Output is correct
38	Correct	99 ms	27748 KB	Output is correct
39	Correct	12 ms	19752 KB	Output is correct
40	Correct	17 ms	20820 KB	Output is correct
41	Correct	16 ms	20648 KB	Output is correct
42	Correct	11 ms	19800 KB	Output is correct
43	Correct	13 ms	19816 KB	Output is correct
44	Correct	12 ms	19776 KB	Output is correct
45	Correct	12 ms	19756 KB	Output is correct
46	Correct	12 ms	19716 KB	Output is correct
47	Correct	14 ms	20212 KB	Output is correct
48	Correct	17 ms	20328 KB	Output is correct
49	Correct	19 ms	20904 KB	Output is correct
50	Correct	104 ms	28284 KB	Output is correct
51	Correct	15 ms	20000 KB	Output is correct
52	Correct	91 ms	26568 KB	Output is correct
53	Correct	18 ms	20640 KB	Output is correct
54	Correct	94 ms	27332 KB	Output is correct
55	Correct	13 ms	20052 KB	Output is correct
56	Correct	13 ms	20052 KB	Output is correct
57	Correct	15 ms	20420 KB	Output is correct
58	Correct	14 ms	20436 KB	Output is correct
59	Correct	17 ms	21076 KB	Output is correct
60	Correct	84 ms	25964 KB	Output is correct
61	Correct	15 ms	20128 KB	Output is correct
62	Correct	99 ms	27692 KB	Output is correct
63	Correct	487 ms	71796 KB	Output is correct
64	Correct	454 ms	71756 KB	Output is correct
65	Correct	514 ms	71876 KB	Output is correct
66	Correct	287 ms	56756 KB	Output is correct
67	Correct	1159 ms	130892 KB	Output is correct
68	Correct	290 ms	56708 KB	Output is correct
69	Correct	434 ms	56612 KB	Output is correct
70	Correct	339 ms	56720 KB	Output is correct
71	Correct	319 ms	56648 KB	Output is correct
72	Correct	802 ms	82380 KB	Output is correct
73	Correct	856 ms	87180 KB	Output is correct
74	Correct	1287 ms	110732 KB	Output is correct
75	Correct	629 ms	62924 KB	Output is correct
76	Correct	853 ms	80944 KB	Output is correct
77	Correct	829 ms	81100 KB	Output is correct
78	Correct	263 ms	51212 KB	Output is correct
79	Correct	424 ms	62144 KB	Output is correct
80	Correct	254 ms	50036 KB	Output is correct
81	Correct	504 ms	59272 KB	Output is correct
82	Correct	676 ms	69940 KB	Output is correct
83	Correct	626 ms	69972 KB	Output is correct
84	Correct	629 ms	91944 KB	Output is correct
85	Correct	662 ms	91972 KB	Output is correct
86	Correct	1100 ms	158288 KB	Output is correct
87	Correct	1140 ms	160660 KB	Output is correct
88	Correct	800 ms	84760 KB	Output is correct
89	Correct	911 ms	78256 KB	Output is correct

답안 #766875

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