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답안 #933004

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
933004 2024-02-24T18:57:20 Z AdamGS 조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2) C++17
100 / 100
 434 ms 49816 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long double ld;
typedef long long ll;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
const int LIM=1e5+7;
set<pair<ll,ll>>A[LIM];
set<ll>B[LIM];
ll F[LIM], ile[LIM], ans;
void kraw(ll a, ll b);
ll fnd(ll x) {
  if(F[x]==x) return x;
  return F[x]=fnd(F[x]);
}
void uni(ll a, ll b) {
  a=fnd(a); b=fnd(b);
  if(ile[a]>ile[b]) swap(a, b);
  rep(xd, 2) {
    while(true) {
      auto it=A[a].lower_bound({b, -1});
      if(it==A[a].end()) break;
      pair<ll,ll>p=*it;
      if(p.st>b) break;
      A[a].erase(p);
      B[p.st].erase(p.nd);
      ans-=ile[b];
    }
    swap(a, b);
  }
  ans+=ile[a]*ile[b]*2;
  vector<pair<int,int>>P;
  for(auto i : A[a]) P.pb({i.nd, i.st});
  for(auto i : A[a]) {
    B[i.st].erase(i.nd);
    ans-=ile[i.st];
  }
  ans-=ile[a]*(ll)B[a].size();
  ans+=ile[a]*(ll)B[b].size();
  for(auto i : B[a]) A[fnd(i)].erase({a, i});
  for(auto i : B[a]) P.pb({i, a});
  ile[b]+=ile[a];
  F[a]=b;
  A[a].clear();
  B[a].clear();
  for(auto i : P) kraw(i.st, i.nd);
}
void kraw(ll a, ll b) {
  if(fnd(a)==fnd(b)) return;
  b=fnd(b);
  auto it=A[b].lower_bound({fnd(a), -1});
  if(it!=A[b].end()) {
    pair<ll,ll>p=*it;
    if(p.st==fnd(a)) {
      uni(a, b);
      return;
    }
  }
  if(B[b].find(a)!=B[b].end()) return;
  B[b].insert(a);
  A[fnd(a)].insert({b, a});
  ans+=ile[b];
}
int main() {
  ios_base::sync_with_stdio(0); cin.tie(0);
  int n, m;
  cin >> n >> m;
  rep(i, n) {
    F[i]=i;
    ile[i]=1;
  }
  while(m--) {
    ll a, b;
    cin >> a >> b; --a; --b;
    kraw(a, b);
    cout << ans << '\n';
  }
}

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 11100 KB Output is correct
2 Correct 2 ms 11100 KB Output is correct
3 Correct 3 ms 11100 KB Output is correct
4 Correct 2 ms 11096 KB Output is correct
5 Correct 3 ms 11100 KB Output is correct
6 Correct 2 ms 11212 KB Output is correct
7 Correct 3 ms 11100 KB Output is correct
8 Correct 3 ms 11352 KB Output is correct
9 Correct 4 ms 11292 KB Output is correct
10 Correct 2 ms 11100 KB Output is correct
11 Correct 4 ms 11224 KB Output is correct
12 Correct 3 ms 11100 KB Output is correct
13 Correct 3 ms 11100 KB Output is correct
14 Correct 2 ms 11256 KB Output is correct
15 Correct 2 ms 11096 KB Output is correct
16 Correct 3 ms 11100 KB Output is correct
17 Correct 3 ms 11100 KB Output is correct
18 Correct 3 ms 11216 KB Output is correct
19 Correct 3 ms 11352 KB Output is correct
20 Correct 3 ms 11096 KB Output is correct
21 Correct 3 ms 11252 KB Output is correct
22 Correct 3 ms 11100 KB Output is correct
23 Correct 3 ms 11188 KB Output is correct
24 Correct 3 ms 11100 KB Output is correct
25 Correct 3 ms 11100 KB Output is correct
26 Correct 3 ms 11100 KB Output is correct
27 Correct 3 ms 11096 KB Output is correct
28 Correct 2 ms 11352 KB Output is correct
29 Correct 2 ms 11100 KB Output is correct
30 Correct 2 ms 11100 KB Output is correct
31 Correct 3 ms 11100 KB Output is correct
32 Correct 4 ms 11100 KB Output is correct
33 Correct 3 ms 11100 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 11100 KB Output is correct
2 Correct 2 ms 11100 KB Output is correct
3 Correct 3 ms 11100 KB Output is correct
4 Correct 2 ms 11096 KB Output is correct
5 Correct 3 ms 11100 KB Output is correct
6 Correct 2 ms 11212 KB Output is correct
7 Correct 3 ms 11100 KB Output is correct
8 Correct 3 ms 11352 KB Output is correct
9 Correct 4 ms 11292 KB Output is correct
10 Correct 2 ms 11100 KB Output is correct
11 Correct 4 ms 11224 KB Output is correct
12 Correct 3 ms 11100 KB Output is correct
13 Correct 3 ms 11100 KB Output is correct
14 Correct 2 ms 11256 KB Output is correct
15 Correct 2 ms 11096 KB Output is correct
16 Correct 3 ms 11100 KB Output is correct
17 Correct 3 ms 11100 KB Output is correct
18 Correct 3 ms 11216 KB Output is correct
19 Correct 3 ms 11352 KB Output is correct
20 Correct 3 ms 11096 KB Output is correct
21 Correct 3 ms 11252 KB Output is correct
22 Correct 3 ms 11100 KB Output is correct
23 Correct 3 ms 11188 KB Output is correct
24 Correct 3 ms 11100 KB Output is correct
25 Correct 3 ms 11100 KB Output is correct
26 Correct 3 ms 11100 KB Output is correct
27 Correct 3 ms 11096 KB Output is correct
28 Correct 2 ms 11352 KB Output is correct
29 Correct 2 ms 11100 KB Output is correct
30 Correct 2 ms 11100 KB Output is correct
31 Correct 3 ms 11100 KB Output is correct
32 Correct 4 ms 11100 KB Output is correct
33 Correct 3 ms 11100 KB Output is correct
34 Correct 4 ms 11352 KB Output is correct
35 Correct 61 ms 16876 KB Output is correct
36 Correct 78 ms 19024 KB Output is correct
37 Correct 97 ms 19120 KB Output is correct
38 Correct 74 ms 18960 KB Output is correct
39 Correct 3 ms 11096 KB Output is correct
40 Correct 4 ms 11356 KB Output is correct
41 Correct 4 ms 11352 KB Output is correct
42 Correct 4 ms 11100 KB Output is correct
43 Correct 4 ms 11356 KB Output is correct
44 Correct 4 ms 11264 KB Output is correct
45 Correct 4 ms 11352 KB Output is correct
46 Correct 3 ms 11100 KB Output is correct
47 Correct 5 ms 11356 KB Output is correct
48 Correct 4 ms 11356 KB Output is correct
49 Correct 9 ms 11984 KB Output is correct
50 Correct 78 ms 19284 KB Output is correct
51 Correct 7 ms 11624 KB Output is correct
52 Correct 85 ms 18068 KB Output is correct
53 Correct 9 ms 11868 KB Output is correct
54 Correct 71 ms 18612 KB Output is correct
55 Correct 5 ms 11612 KB Output is correct
56 Correct 5 ms 11612 KB Output is correct
57 Correct 6 ms 11612 KB Output is correct
58 Correct 5 ms 11612 KB Output is correct
59 Correct 4 ms 11100 KB Output is correct
60 Correct 61 ms 16228 KB Output is correct
61 Correct 5 ms 11356 KB Output is correct
62 Correct 74 ms 18812 KB Output is correct

Subtask #3
83.0 / 83.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 11100 KB Output is correct
2 Correct 2 ms 11100 KB Output is correct
3 Correct 3 ms 11100 KB Output is correct
4 Correct 2 ms 11096 KB Output is correct
5 Correct 3 ms 11100 KB Output is correct
6 Correct 2 ms 11212 KB Output is correct
7 Correct 3 ms 11100 KB Output is correct
8 Correct 3 ms 11352 KB Output is correct
9 Correct 4 ms 11292 KB Output is correct
10 Correct 2 ms 11100 KB Output is correct
11 Correct 4 ms 11224 KB Output is correct
12 Correct 3 ms 11100 KB Output is correct
13 Correct 3 ms 11100 KB Output is correct
14 Correct 2 ms 11256 KB Output is correct
15 Correct 2 ms 11096 KB Output is correct
16 Correct 3 ms 11100 KB Output is correct
17 Correct 3 ms 11100 KB Output is correct
18 Correct 3 ms 11216 KB Output is correct
19 Correct 3 ms 11352 KB Output is correct
20 Correct 3 ms 11096 KB Output is correct
21 Correct 3 ms 11252 KB Output is correct
22 Correct 3 ms 11100 KB Output is correct
23 Correct 3 ms 11188 KB Output is correct
24 Correct 3 ms 11100 KB Output is correct
25 Correct 3 ms 11100 KB Output is correct
26 Correct 3 ms 11100 KB Output is correct
27 Correct 3 ms 11096 KB Output is correct
28 Correct 2 ms 11352 KB Output is correct
29 Correct 2 ms 11100 KB Output is correct
30 Correct 2 ms 11100 KB Output is correct
31 Correct 3 ms 11100 KB Output is correct
32 Correct 4 ms 11100 KB Output is correct
33 Correct 3 ms 11100 KB Output is correct
34 Correct 4 ms 11352 KB Output is correct
35 Correct 61 ms 16876 KB Output is correct
36 Correct 78 ms 19024 KB Output is correct
37 Correct 97 ms 19120 KB Output is correct
38 Correct 74 ms 18960 KB Output is correct
39 Correct 3 ms 11096 KB Output is correct
40 Correct 4 ms 11356 KB Output is correct
41 Correct 4 ms 11352 KB Output is correct
42 Correct 4 ms 11100 KB Output is correct
43 Correct 4 ms 11356 KB Output is correct
44 Correct 4 ms 11264 KB Output is correct
45 Correct 4 ms 11352 KB Output is correct
46 Correct 3 ms 11100 KB Output is correct
47 Correct 5 ms 11356 KB Output is correct
48 Correct 4 ms 11356 KB Output is correct
49 Correct 9 ms 11984 KB Output is correct
50 Correct 78 ms 19284 KB Output is correct
51 Correct 7 ms 11624 KB Output is correct
52 Correct 85 ms 18068 KB Output is correct
53 Correct 9 ms 11868 KB Output is correct
54 Correct 71 ms 18612 KB Output is correct
55 Correct 5 ms 11612 KB Output is correct
56 Correct 5 ms 11612 KB Output is correct
57 Correct 6 ms 11612 KB Output is correct
58 Correct 5 ms 11612 KB Output is correct
59 Correct 4 ms 11100 KB Output is correct
60 Correct 61 ms 16228 KB Output is correct
61 Correct 5 ms 11356 KB Output is correct
62 Correct 74 ms 18812 KB Output is correct
63 Correct 362 ms 49816 KB Output is correct
64 Correct 325 ms 49708 KB Output is correct
65 Correct 307 ms 49724 KB Output is correct
66 Correct 59 ms 15696 KB Output is correct
67 Correct 117 ms 20428 KB Output is correct
68 Correct 61 ms 15852 KB Output is correct
69 Correct 191 ms 21144 KB Output is correct
70 Correct 60 ms 15664 KB Output is correct
71 Correct 77 ms 15640 KB Output is correct
72 Correct 171 ms 20608 KB Output is correct
73 Correct 132 ms 20420 KB Output is correct
74 Correct 434 ms 31572 KB Output is correct
75 Correct 238 ms 26232 KB Output is correct
76 Correct 313 ms 30032 KB Output is correct
77 Correct 337 ms 29780 KB Output is correct
78 Correct 129 ms 20020 KB Output is correct
79 Correct 189 ms 23816 KB Output is correct
80 Correct 105 ms 20224 KB Output is correct
81 Correct 183 ms 23468 KB Output is correct
82 Correct 370 ms 36916 KB Output is correct
83 Correct 392 ms 36944 KB Output is correct
84 Correct 326 ms 37156 KB Output is correct
85 Correct 289 ms 37144 KB Output is correct
86 Correct 64 ms 14808 KB Output is correct
87 Correct 82 ms 17220 KB Output is correct
88 Correct 143 ms 20524 KB Output is correct
89 Correct 364 ms 29132 KB Output is correct