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답안 #706818

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
706818 2023-03-07T20:52:21 Z EthanKim8683 조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2) C++17
100 / 100
 1028 ms 90696 KB 
#include<bits/stdc++.h>
using namespace std;
using I=int;
using Lli=long long int;
const I N=100000;
I pars[N];
set<I>incs1[N],outs1[N];
set<I>incs2[N],outs2[N];
set<I>nods[N];
Lli res=0;
I fnd(I i){
  return pars[i]<0?i:pars[i]=fnd(pars[i]);
}
I siz(I i){
  return-pars[fnd(i)];
}
void uni(I a,I b){
  if((a=fnd(a))==(b=fnd(b)))return;
  if(pars[a]>pars[b])swap(a,b);
  Lli siz1=siz(a),siz2=siz(b);
  res-=siz1*(incs1[a].size()+siz1-1);
  res-=siz2*(incs1[b].size()+siz2-1);
  for(auto c:incs1[b]){
    outs1[c].erase(b);
    if(fnd(c)==a)continue;
    incs1[a].insert(c);
    outs1[c].insert(a);
  }
  for(auto c:nods[b]){
    nods[a].insert(c);
    if(!outs1[c].count(a))continue;
    outs1[c].erase(a);
    incs1[a].erase(c);
  }
  for(auto c:incs2[b]){
    outs2[c].erase(b);
    if(c==a)continue;
    incs2[a].insert(c);
    outs2[c].insert(a);
  }
  for(auto c:outs2[b]){
    incs2[c].erase(b);
    if(c==a)continue;
    outs2[a].insert(c);
    incs2[c].insert(a);
  }
  pars[a]+=pars[b],pars[b]=a;
  Lli siz3=siz(a);
  res+=siz3*(incs1[a].size()+siz3-1);
  for(auto c:incs2[b]){
    if(c==a)continue;
    if(outs2[a].count(c))uni(a,c);
  }
  for(auto c:outs2[b]){
    if(c==a)continue;
    if(outs2[c].count(a))uni(c,a);
  }
  incs1[b].clear();
  incs2[b].clear(),outs2[b].clear();
  nods[b].clear();
}
I main(){
  cin.tie(0)->sync_with_stdio(0);
  I n,m;cin>>n>>m;
  fill_n(pars,n,-1);
  for(I i=0;i<n;i++)nods[i].insert(i);
  for(I i=0;i<m;i++){
    I a,b;cin>>a>>b,a--,b--;
    I c=fnd(a),d=fnd(b);
    if(c!=d){
      if(!outs1[a].count(d)){
        incs1[d].insert(a);
        outs1[a].insert(d);
        res+=siz(d);
      }
      if(!outs2[c].count(d)){
        incs2[d].insert(c);
        outs2[c].insert(d);
        if(outs2[d].count(c))uni(c,d);
      }
    }
    printf("%lli\n",res);
  }
}

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Correct 14 ms 23808 KB Output is correct
3 Correct 12 ms 23744 KB Output is correct
4 Correct 13 ms 23868 KB Output is correct
5 Correct 12 ms 23764 KB Output is correct
6 Correct 12 ms 23792 KB Output is correct
7 Correct 15 ms 23860 KB Output is correct
8 Correct 17 ms 23764 KB Output is correct
9 Correct 13 ms 23864 KB Output is correct
10 Correct 12 ms 23708 KB Output is correct
11 Correct 13 ms 23764 KB Output is correct
12 Correct 12 ms 23740 KB Output is correct
13 Correct 13 ms 23812 KB Output is correct
14 Correct 12 ms 23808 KB Output is correct
15 Correct 12 ms 23804 KB Output is correct
16 Correct 12 ms 23804 KB Output is correct
17 Correct 12 ms 23720 KB Output is correct
18 Correct 12 ms 23740 KB Output is correct
19 Correct 13 ms 23804 KB Output is correct
20 Correct 13 ms 23764 KB Output is correct
21 Correct 15 ms 23812 KB Output is correct
22 Correct 13 ms 23792 KB Output is correct
23 Correct 13 ms 23764 KB Output is correct
24 Correct 12 ms 23744 KB Output is correct
25 Correct 12 ms 23816 KB Output is correct
26 Correct 12 ms 23824 KB Output is correct
27 Correct 12 ms 23800 KB Output is correct
28 Correct 12 ms 23752 KB Output is correct
29 Correct 15 ms 23804 KB Output is correct
30 Correct 12 ms 23736 KB Output is correct
31 Correct 16 ms 23792 KB Output is correct
32 Correct 13 ms 23804 KB Output is correct
33 Correct 14 ms 23732 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Correct 14 ms 23808 KB Output is correct
3 Correct 12 ms 23744 KB Output is correct
4 Correct 13 ms 23868 KB Output is correct
5 Correct 12 ms 23764 KB Output is correct
6 Correct 12 ms 23792 KB Output is correct
7 Correct 15 ms 23860 KB Output is correct
8 Correct 17 ms 23764 KB Output is correct
9 Correct 13 ms 23864 KB Output is correct
10 Correct 12 ms 23708 KB Output is correct
11 Correct 13 ms 23764 KB Output is correct
12 Correct 12 ms 23740 KB Output is correct
13 Correct 13 ms 23812 KB Output is correct
14 Correct 12 ms 23808 KB Output is correct
15 Correct 12 ms 23804 KB Output is correct
16 Correct 12 ms 23804 KB Output is correct
17 Correct 12 ms 23720 KB Output is correct
18 Correct 12 ms 23740 KB Output is correct
19 Correct 13 ms 23804 KB Output is correct
20 Correct 13 ms 23764 KB Output is correct
21 Correct 15 ms 23812 KB Output is correct
22 Correct 13 ms 23792 KB Output is correct
23 Correct 13 ms 23764 KB Output is correct
24 Correct 12 ms 23744 KB Output is correct
25 Correct 12 ms 23816 KB Output is correct
26 Correct 12 ms 23824 KB Output is correct
27 Correct 12 ms 23800 KB Output is correct
28 Correct 12 ms 23752 KB Output is correct
29 Correct 15 ms 23804 KB Output is correct
30 Correct 12 ms 23736 KB Output is correct
31 Correct 16 ms 23792 KB Output is correct
32 Correct 13 ms 23804 KB Output is correct
33 Correct 14 ms 23732 KB Output is correct
34 Correct 15 ms 24052 KB Output is correct
35 Correct 84 ms 30156 KB Output is correct
36 Correct 115 ms 33528 KB Output is correct
37 Correct 114 ms 33664 KB Output is correct
38 Correct 104 ms 33204 KB Output is correct
39 Correct 15 ms 23944 KB Output is correct
40 Correct 17 ms 24156 KB Output is correct
41 Correct 20 ms 24076 KB Output is correct
42 Correct 15 ms 23948 KB Output is correct
43 Correct 19 ms 24080 KB Output is correct
44 Correct 16 ms 24080 KB Output is correct
45 Correct 14 ms 23948 KB Output is correct
46 Correct 13 ms 23944 KB Output is correct
47 Correct 16 ms 24148 KB Output is correct
48 Correct 16 ms 24084 KB Output is correct
49 Correct 24 ms 25048 KB Output is correct
50 Correct 153 ms 33672 KB Output is correct
51 Correct 22 ms 24424 KB Output is correct
52 Correct 99 ms 31612 KB Output is correct
53 Correct 26 ms 24916 KB Output is correct
54 Correct 107 ms 32636 KB Output is correct
55 Correct 18 ms 24656 KB Output is correct
56 Correct 17 ms 24660 KB Output is correct
57 Correct 17 ms 24916 KB Output is correct
58 Correct 17 ms 24968 KB Output is correct
59 Correct 14 ms 23920 KB Output is correct
60 Correct 81 ms 28896 KB Output is correct
61 Correct 16 ms 24148 KB Output is correct
62 Correct 107 ms 32904 KB Output is correct

Subtask #3
83.0 / 83.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 23764 KB Output is correct
2 Correct 14 ms 23808 KB Output is correct
3 Correct 12 ms 23744 KB Output is correct
4 Correct 13 ms 23868 KB Output is correct
5 Correct 12 ms 23764 KB Output is correct
6 Correct 12 ms 23792 KB Output is correct
7 Correct 15 ms 23860 KB Output is correct
8 Correct 17 ms 23764 KB Output is correct
9 Correct 13 ms 23864 KB Output is correct
10 Correct 12 ms 23708 KB Output is correct
11 Correct 13 ms 23764 KB Output is correct
12 Correct 12 ms 23740 KB Output is correct
13 Correct 13 ms 23812 KB Output is correct
14 Correct 12 ms 23808 KB Output is correct
15 Correct 12 ms 23804 KB Output is correct
16 Correct 12 ms 23804 KB Output is correct
17 Correct 12 ms 23720 KB Output is correct
18 Correct 12 ms 23740 KB Output is correct
19 Correct 13 ms 23804 KB Output is correct
20 Correct 13 ms 23764 KB Output is correct
21 Correct 15 ms 23812 KB Output is correct
22 Correct 13 ms 23792 KB Output is correct
23 Correct 13 ms 23764 KB Output is correct
24 Correct 12 ms 23744 KB Output is correct
25 Correct 12 ms 23816 KB Output is correct
26 Correct 12 ms 23824 KB Output is correct
27 Correct 12 ms 23800 KB Output is correct
28 Correct 12 ms 23752 KB Output is correct
29 Correct 15 ms 23804 KB Output is correct
30 Correct 12 ms 23736 KB Output is correct
31 Correct 16 ms 23792 KB Output is correct
32 Correct 13 ms 23804 KB Output is correct
33 Correct 14 ms 23732 KB Output is correct
34 Correct 15 ms 24052 KB Output is correct
35 Correct 84 ms 30156 KB Output is correct
36 Correct 115 ms 33528 KB Output is correct
37 Correct 114 ms 33664 KB Output is correct
38 Correct 104 ms 33204 KB Output is correct
39 Correct 15 ms 23944 KB Output is correct
40 Correct 17 ms 24156 KB Output is correct
41 Correct 20 ms 24076 KB Output is correct
42 Correct 15 ms 23948 KB Output is correct
43 Correct 19 ms 24080 KB Output is correct
44 Correct 16 ms 24080 KB Output is correct
45 Correct 14 ms 23948 KB Output is correct
46 Correct 13 ms 23944 KB Output is correct
47 Correct 16 ms 24148 KB Output is correct
48 Correct 16 ms 24084 KB Output is correct
49 Correct 24 ms 25048 KB Output is correct
50 Correct 153 ms 33672 KB Output is correct
51 Correct 22 ms 24424 KB Output is correct
52 Correct 99 ms 31612 KB Output is correct
53 Correct 26 ms 24916 KB Output is correct
54 Correct 107 ms 32636 KB Output is correct
55 Correct 18 ms 24656 KB Output is correct
56 Correct 17 ms 24660 KB Output is correct
57 Correct 17 ms 24916 KB Output is correct
58 Correct 17 ms 24968 KB Output is correct
59 Correct 14 ms 23920 KB Output is correct
60 Correct 81 ms 28896 KB Output is correct
61 Correct 16 ms 24148 KB Output is correct
62 Correct 107 ms 32904 KB Output is correct
63 Correct 519 ms 90688 KB Output is correct
64 Correct 488 ms 90696 KB Output is correct
65 Correct 490 ms 90692 KB Output is correct
66 Correct 229 ms 33300 KB Output is correct
67 Correct 478 ms 42076 KB Output is correct
68 Correct 195 ms 33228 KB Output is correct
69 Correct 495 ms 42700 KB Output is correct
70 Correct 216 ms 33376 KB Output is correct
71 Correct 205 ms 33308 KB Output is correct
72 Correct 509 ms 41992 KB Output is correct
73 Correct 545 ms 42152 KB Output is correct
74 Correct 1028 ms 56780 KB Output is correct
75 Correct 674 ms 49764 KB Output is correct
76 Correct 842 ms 57180 KB Output is correct
77 Correct 870 ms 57240 KB Output is correct
78 Correct 283 ms 41544 KB Output is correct
79 Correct 436 ms 45020 KB Output is correct
80 Correct 224 ms 41464 KB Output is correct
81 Correct 414 ms 44768 KB Output is correct
82 Correct 768 ms 70004 KB Output is correct
83 Correct 764 ms 70060 KB Output is correct
84 Correct 751 ms 85580 KB Output is correct
85 Correct 761 ms 85432 KB Output is correct
86 Correct 384 ms 34076 KB Output is correct
87 Correct 351 ms 36316 KB Output is correct
88 Correct 524 ms 42036 KB Output is correct
89 Correct 852 ms 55612 KB Output is correct