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
#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);
           ~~~~~^~~~~~~~~~~~~~~
# 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
# 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
# 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