답안 #245452

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
245452	2020-07-06T13:20:55 Z	TadijaSebez	조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2)	C++11	100 / 100	1365 ms	72056 KB

joitter2

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
const int N=100050;
set<int> in[N],all[N],E[N],R[N];
int my[N];
ll ans;
ll Calc(int cmp){
	return (ll)all[cmp].size()*((int)all[cmp].size()-1)+(ll)in[cmp].size()*all[cmp].size();
}
void Del(int cmp){
	ans-=Calc(cmp);
}
void Add(int cmp){
	ans+=Calc(cmp);
}
int Mrg(int A,int B){
	if(all[A].empty())return B;
	if(all[B].empty())return A;
	Del(A);Del(B);
	E[B].erase(A);
	R[A].erase(B);
	if(all[A].size()+in[A].size()+E[A].size()+R[A].size()>all[B].size()+in[B].size()+E[B].size()+R[B].size())swap(A,B);
	for(int x:all[A]){
		if(in[B].count(x))in[B].erase(x);
		all[B].insert(x);
		my[x]=B;
	}
	all[A].clear();
	for(int x:in[A]){
		if(!all[B].count(x))in[B].insert(x);
	}
	in[A].clear();
	vector<int> nxt;
	for(int x:E[A]){
		if(R[B].count(x))nxt.pb(x);
		R[x].erase(A);
		if(!E[B].count(x)){
			E[B].insert(x);
			R[x].insert(B);
		}
	}
	E[A].clear();
	for(int x:R[A]){
		if(E[B].count(x))nxt.pb(x);
		E[x].erase(A);
		if(!R[B].count(x)){
			R[B].insert(x);
			E[x].insert(B);
		}
	}
	R[A].clear();
	Add(B);
	sort(nxt.begin(),nxt.end());
	nxt.erase(unique(nxt.begin(),nxt.end()),nxt.end());
	for(int x:nxt){
		if(B!=x)B=Mrg(B,x);
	}
	return B;
}
int main(){
	int n,m;scanf("%i %i",&n,&m);
	for(int i=1;i<=n;i++)all[i].insert(i),my[i]=i;
	for(int i=1;i<=m;i++){
		int u,v;scanf("%i %i",&u,&v);
		int A=my[u],B=my[v];
		if(A!=B){
			if(E[B].count(A)){
				Mrg(A,B);
			}else{
				Del(B);
				in[B].insert(u);
				E[A].insert(B);
				R[B].insert(A);
				Add(B);
			}
		}
		printf("%lld\n",ans);
	}
	return 0;
}

Compilation message

joitter2.cpp: In function 'int main()':
joitter2.cpp:63:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  int n,m;scanf("%i %i",&n,&m);
          ~~~~~^~~~~~~~~~~~~~~
joitter2.cpp:66:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   int u,v;scanf("%i %i",&u,&v);
           ~~~~~^~~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

#	결과	실행 시간	메모리	Grader output
1	Correct	16 ms	19072 KB	Output is correct
2	Correct	15 ms	19200 KB	Output is correct
3	Correct	16 ms	19200 KB	Output is correct
4	Correct	18 ms	19200 KB	Output is correct
5	Correct	15 ms	19200 KB	Output is correct
6	Correct	16 ms	19200 KB	Output is correct
7	Correct	16 ms	19200 KB	Output is correct
8	Correct	16 ms	19200 KB	Output is correct
9	Correct	16 ms	19200 KB	Output is correct
10	Correct	15 ms	19072 KB	Output is correct
11	Correct	18 ms	19072 KB	Output is correct
12	Correct	15 ms	19072 KB	Output is correct
13	Correct	18 ms	19072 KB	Output is correct
14	Correct	15 ms	19072 KB	Output is correct
15	Correct	15 ms	19072 KB	Output is correct
16	Correct	16 ms	19072 KB	Output is correct
17	Correct	19 ms	19200 KB	Output is correct
18	Correct	16 ms	19200 KB	Output is correct
19	Correct	19 ms	19072 KB	Output is correct
20	Correct	16 ms	19200 KB	Output is correct
21	Correct	16 ms	19200 KB	Output is correct
22	Correct	15 ms	19072 KB	Output is correct
23	Correct	18 ms	19204 KB	Output is correct
24	Correct	16 ms	19200 KB	Output is correct
25	Correct	16 ms	19200 KB	Output is correct
26	Correct	18 ms	19072 KB	Output is correct
27	Correct	17 ms	19200 KB	Output is correct
28	Correct	15 ms	19072 KB	Output is correct
29	Correct	18 ms	19072 KB	Output is correct
30	Correct	15 ms	19072 KB	Output is correct
31	Correct	16 ms	19200 KB	Output is correct
32	Correct	16 ms	19072 KB	Output is correct
33	Correct	16 ms	19200 KB	Output is correct

Subtask #2
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	16 ms	19072 KB	Output is correct
2	Correct	15 ms	19200 KB	Output is correct
3	Correct	16 ms	19200 KB	Output is correct
4	Correct	18 ms	19200 KB	Output is correct
5	Correct	15 ms	19200 KB	Output is correct
6	Correct	16 ms	19200 KB	Output is correct
7	Correct	16 ms	19200 KB	Output is correct
8	Correct	16 ms	19200 KB	Output is correct
9	Correct	16 ms	19200 KB	Output is correct
10	Correct	15 ms	19072 KB	Output is correct
11	Correct	18 ms	19072 KB	Output is correct
12	Correct	15 ms	19072 KB	Output is correct
13	Correct	18 ms	19072 KB	Output is correct
14	Correct	15 ms	19072 KB	Output is correct
15	Correct	15 ms	19072 KB	Output is correct
16	Correct	16 ms	19072 KB	Output is correct
17	Correct	19 ms	19200 KB	Output is correct
18	Correct	16 ms	19200 KB	Output is correct
19	Correct	19 ms	19072 KB	Output is correct
20	Correct	16 ms	19200 KB	Output is correct
21	Correct	16 ms	19200 KB	Output is correct
22	Correct	15 ms	19072 KB	Output is correct
23	Correct	18 ms	19204 KB	Output is correct
24	Correct	16 ms	19200 KB	Output is correct
25	Correct	16 ms	19200 KB	Output is correct
26	Correct	18 ms	19072 KB	Output is correct
27	Correct	17 ms	19200 KB	Output is correct
28	Correct	15 ms	19072 KB	Output is correct
29	Correct	18 ms	19072 KB	Output is correct
30	Correct	15 ms	19072 KB	Output is correct
31	Correct	16 ms	19200 KB	Output is correct
32	Correct	16 ms	19072 KB	Output is correct
33	Correct	16 ms	19200 KB	Output is correct
34	Correct	21 ms	19328 KB	Output is correct
35	Correct	142 ms	24896 KB	Output is correct
36	Correct	168 ms	27744 KB	Output is correct
37	Correct	179 ms	27896 KB	Output is correct
38	Correct	179 ms	27560 KB	Output is correct
39	Correct	19 ms	19328 KB	Output is correct
40	Correct	20 ms	19456 KB	Output is correct
41	Correct	20 ms	19456 KB	Output is correct
42	Correct	18 ms	19328 KB	Output is correct
43	Correct	19 ms	19488 KB	Output is correct
44	Correct	19 ms	19456 KB	Output is correct
45	Correct	22 ms	19328 KB	Output is correct
46	Correct	18 ms	19328 KB	Output is correct
47	Correct	19 ms	19456 KB	Output is correct
48	Correct	20 ms	19456 KB	Output is correct
49	Correct	36 ms	20096 KB	Output is correct
50	Correct	174 ms	27880 KB	Output is correct
51	Correct	24 ms	19712 KB	Output is correct
52	Correct	150 ms	26232 KB	Output is correct
53	Correct	27 ms	20096 KB	Output is correct
54	Correct	155 ms	27128 KB	Output is correct
55	Correct	23 ms	19840 KB	Output is correct
56	Correct	22 ms	19840 KB	Output is correct
57	Correct	25 ms	20224 KB	Output is correct
58	Correct	29 ms	20096 KB	Output is correct
59	Correct	21 ms	19328 KB	Output is correct
60	Correct	130 ms	24312 KB	Output is correct
61	Correct	20 ms	19456 KB	Output is correct
62	Correct	157 ms	27384 KB	Output is correct

Subtask #3
83.0 / 83.0

#	결과	실행 시간	메모리	Grader output
1	Correct	16 ms	19072 KB	Output is correct
2	Correct	15 ms	19200 KB	Output is correct
3	Correct	16 ms	19200 KB	Output is correct
4	Correct	18 ms	19200 KB	Output is correct
5	Correct	15 ms	19200 KB	Output is correct
6	Correct	16 ms	19200 KB	Output is correct
7	Correct	16 ms	19200 KB	Output is correct
8	Correct	16 ms	19200 KB	Output is correct
9	Correct	16 ms	19200 KB	Output is correct
10	Correct	15 ms	19072 KB	Output is correct
11	Correct	18 ms	19072 KB	Output is correct
12	Correct	15 ms	19072 KB	Output is correct
13	Correct	18 ms	19072 KB	Output is correct
14	Correct	15 ms	19072 KB	Output is correct
15	Correct	15 ms	19072 KB	Output is correct
16	Correct	16 ms	19072 KB	Output is correct
17	Correct	19 ms	19200 KB	Output is correct
18	Correct	16 ms	19200 KB	Output is correct
19	Correct	19 ms	19072 KB	Output is correct
20	Correct	16 ms	19200 KB	Output is correct
21	Correct	16 ms	19200 KB	Output is correct
22	Correct	15 ms	19072 KB	Output is correct
23	Correct	18 ms	19204 KB	Output is correct
24	Correct	16 ms	19200 KB	Output is correct
25	Correct	16 ms	19200 KB	Output is correct
26	Correct	18 ms	19072 KB	Output is correct
27	Correct	17 ms	19200 KB	Output is correct
28	Correct	15 ms	19072 KB	Output is correct
29	Correct	18 ms	19072 KB	Output is correct
30	Correct	15 ms	19072 KB	Output is correct
31	Correct	16 ms	19200 KB	Output is correct
32	Correct	16 ms	19072 KB	Output is correct
33	Correct	16 ms	19200 KB	Output is correct
34	Correct	21 ms	19328 KB	Output is correct
35	Correct	142 ms	24896 KB	Output is correct
36	Correct	168 ms	27744 KB	Output is correct
37	Correct	179 ms	27896 KB	Output is correct
38	Correct	179 ms	27560 KB	Output is correct
39	Correct	19 ms	19328 KB	Output is correct
40	Correct	20 ms	19456 KB	Output is correct
41	Correct	20 ms	19456 KB	Output is correct
42	Correct	18 ms	19328 KB	Output is correct
43	Correct	19 ms	19488 KB	Output is correct
44	Correct	19 ms	19456 KB	Output is correct
45	Correct	22 ms	19328 KB	Output is correct
46	Correct	18 ms	19328 KB	Output is correct
47	Correct	19 ms	19456 KB	Output is correct
48	Correct	20 ms	19456 KB	Output is correct
49	Correct	36 ms	20096 KB	Output is correct
50	Correct	174 ms	27880 KB	Output is correct
51	Correct	24 ms	19712 KB	Output is correct
52	Correct	150 ms	26232 KB	Output is correct
53	Correct	27 ms	20096 KB	Output is correct
54	Correct	155 ms	27128 KB	Output is correct
55	Correct	23 ms	19840 KB	Output is correct
56	Correct	22 ms	19840 KB	Output is correct
57	Correct	25 ms	20224 KB	Output is correct
58	Correct	29 ms	20096 KB	Output is correct
59	Correct	21 ms	19328 KB	Output is correct
60	Correct	130 ms	24312 KB	Output is correct
61	Correct	20 ms	19456 KB	Output is correct
62	Correct	157 ms	27384 KB	Output is correct
63	Correct	568 ms	71920 KB	Output is correct
64	Correct	564 ms	71928 KB	Output is correct
65	Correct	560 ms	72056 KB	Output is correct
66	Correct	245 ms	28636 KB	Output is correct
67	Correct	487 ms	35040 KB	Output is correct
68	Correct	226 ms	28664 KB	Output is correct
69	Correct	481 ms	35816 KB	Output is correct
70	Correct	344 ms	28664 KB	Output is correct
71	Correct	268 ms	28664 KB	Output is correct
72	Correct	548 ms	35196 KB	Output is correct
73	Correct	487 ms	35156 KB	Output is correct
74	Correct	1185 ms	46644 KB	Output is correct
75	Correct	722 ms	41592 KB	Output is correct
76	Correct	951 ms	46316 KB	Output is correct
77	Correct	989 ms	46328 KB	Output is correct
78	Correct	304 ms	34556 KB	Output is correct
79	Correct	517 ms	37752 KB	Output is correct
80	Correct	303 ms	34424 KB	Output is correct
81	Correct	538 ms	37704 KB	Output is correct
82	Correct	1365 ms	56056 KB	Output is correct
83	Correct	1112 ms	56312 KB	Output is correct
84	Correct	1110 ms	65464 KB	Output is correct
85	Correct	1054 ms	65528 KB	Output is correct
86	Correct	337 ms	29560 KB	Output is correct
87	Correct	383 ms	31736 KB	Output is correct
88	Correct	601 ms	35320 KB	Output is correct
89	Correct	937 ms	45704 KB	Output is correct

답안 #245452

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