oj.uz

답안 #834598

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
834598 2023-08-22T15:45:33 Z NemanjaSo2005 조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2) C++17
100 / 100
 1061 ms 87948 KB 
#include<bits/stdc++.h>
#define ll long long
using namespace std;
const int maxn=1e5+5;
int N,M;
ll rod[maxn],vel[maxn];
ll res;
set<int> cukomp[maxn],kompuc[maxn],compout[maxn],compin[maxn];
vector<int> koji[maxn];
queue<pair<int,int>> Q;
int getpar(int x){
   if(rod[x]==x)
      return x;
   rod[x]=getpar(rod[x]);
   return rod[x];
}
void pretvori(int a,int b){
   for(auto it=kompuc[a].begin();it!=kompuc[a].end();it++){
      cukomp[*it].erase(a);
      if(getpar(*it)!=b)
         cukomp[*it].insert(b);
   }
  // cout<<"A"<<endl;
   for(auto it=compout[a].begin();it!=compout[a].end();it++){
      compin[*it].erase(a);
      compin[*it].insert(b);
   }
   //cout<<"B"<<endl;
   for(auto it=compin[a].begin();it!=compin[a].end();it++){
      compout[*it].erase(a);
      compout[*it].insert(b);
   }
  // cout<<"C"<<endl;
}
void spoj(int a,int b){ /// a i b su indeksi komponenti
   if(getpar(a)!=a or getpar(b)!=b)
      return;
   if(vel[b]>vel[a])
      swap(a,b);
   //cout<<"SPAJAM "<<a<<" "<<b<<endl;
   res-=vel[a]*kompuc[a].size();
   res-=vel[a]*(vel[a]-1);
   res-=vel[b]*kompuc[b].size();
   res-=vel[b]*(vel[b]-1);
   //cout<<res<<endl;
   compin[a].erase(b);
   compout[a].erase(b);
   compin[b].erase(a);
   compout[b].erase(a);
   //cout<<"OVDE"<<endl;
   vel[a]+=vel[b];
   rod[b]=a;
   pretvori(b,a);
  // cout<<"OKK"<<endl;
   for(int i=0;i<koji[b].size();i++){
      kompuc[a].erase(koji[b][i]);
      koji[a].push_back(koji[b][i]);
   }
   for(auto it=compin[b].begin();it!=compin[b].end();it++){
      if(compout[a].find(*it)!=compout[a].end())
         Q.push({getpar(*it),getpar(a)});
      compin[a].insert(*it);
   }
   for(auto it=compout[b].begin();it!=compout[b].end();it++){
      if(compin[a].find(*it)!=compin[a].end())
         Q.push({getpar(a),getpar(*it)});
      compout[a].insert(*it);
   }
   for(auto it=kompuc[b].begin();it!=kompuc[b].end();it++)
      if(getpar(*it)!=a)
         kompuc[a].insert(*it);
   res+=vel[a]*(vel[a]-1);
   res+=vel[a]*kompuc[a].size();
  // cout<<vel[a]<<" "<<kompuc[a].size()<<endl;
   return;
}
void odradi(int a,int b){
   //cout<<a<<" "<<b<<endl;
   int ca=getpar(a);
   int cb=getpar(b);
   if(ca==cb)
      return;
   if(cukomp[a].find(cb)!=cukomp[a].end())
      return;
   if(compout[cb].find(ca)!=compout[cb].end()){
     // cout<<"SPAJAJ"<<endl;
      spoj(ca,cb);
      return;
   }
   res+=vel[cb];
   cukomp[a].insert(cb);
   kompuc[cb].insert(a);
   compin[cb].insert(ca);
   compout[ca].insert(cb);
   return;
}
int main(){
   ios_base::sync_with_stdio(false);
   cin.tie(0);
   cin>>N>>M;
   for(int i=1;i<=N;i++){
      vel[i]=1;
      rod[i]=i;
      koji[i].push_back(i);
   }
   res=0;
   int a,b;
   while(M--){
      cin>>a>>b;
      odradi(a,b);
      while(Q.size()){
         spoj(Q.front().first,Q.front().second);
         Q.pop();
      }
      cout<<res<<"\n";
   }
   return 0;
}

Compilation message

joitter2.cpp: In function 'void spoj(int, int)':
joitter2.cpp:55:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |    for(int i=0;i<koji[b].size();i++){
      |                ~^~~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 21460 KB Output is correct
2 Correct 10 ms 21460 KB Output is correct
3 Correct 11 ms 21460 KB Output is correct
4 Correct 12 ms 21460 KB Output is correct
5 Correct 10 ms 21460 KB Output is correct
6 Correct 11 ms 21464 KB Output is correct
7 Correct 11 ms 21460 KB Output is correct
8 Correct 11 ms 21460 KB Output is correct
9 Correct 13 ms 21460 KB Output is correct
10 Correct 10 ms 21460 KB Output is correct
11 Correct 12 ms 21396 KB Output is correct
12 Correct 13 ms 21460 KB Output is correct
13 Correct 10 ms 21460 KB Output is correct
14 Correct 11 ms 21372 KB Output is correct
15 Correct 10 ms 21460 KB Output is correct
16 Correct 11 ms 21460 KB Output is correct
17 Correct 10 ms 21460 KB Output is correct
18 Correct 10 ms 21460 KB Output is correct
19 Correct 13 ms 21436 KB Output is correct
20 Correct 10 ms 21460 KB Output is correct
21 Correct 13 ms 21416 KB Output is correct
22 Correct 10 ms 21460 KB Output is correct
23 Correct 11 ms 21460 KB Output is correct
24 Correct 11 ms 21460 KB Output is correct
25 Correct 12 ms 21460 KB Output is correct
26 Correct 10 ms 21460 KB Output is correct
27 Correct 9 ms 21460 KB Output is correct
28 Correct 9 ms 21420 KB Output is correct
29 Correct 13 ms 21632 KB Output is correct
30 Correct 10 ms 21460 KB Output is correct
31 Correct 10 ms 21412 KB Output is correct
32 Correct 9 ms 21460 KB Output is correct
33 Correct 9 ms 21460 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 21460 KB Output is correct
2 Correct 10 ms 21460 KB Output is correct
3 Correct 11 ms 21460 KB Output is correct
4 Correct 12 ms 21460 KB Output is correct
5 Correct 10 ms 21460 KB Output is correct
6 Correct 11 ms 21464 KB Output is correct
7 Correct 11 ms 21460 KB Output is correct
8 Correct 11 ms 21460 KB Output is correct
9 Correct 13 ms 21460 KB Output is correct
10 Correct 10 ms 21460 KB Output is correct
11 Correct 12 ms 21396 KB Output is correct
12 Correct 13 ms 21460 KB Output is correct
13 Correct 10 ms 21460 KB Output is correct
14 Correct 11 ms 21372 KB Output is correct
15 Correct 10 ms 21460 KB Output is correct
16 Correct 11 ms 21460 KB Output is correct
17 Correct 10 ms 21460 KB Output is correct
18 Correct 10 ms 21460 KB Output is correct
19 Correct 13 ms 21436 KB Output is correct
20 Correct 10 ms 21460 KB Output is correct
21 Correct 13 ms 21416 KB Output is correct
22 Correct 10 ms 21460 KB Output is correct
23 Correct 11 ms 21460 KB Output is correct
24 Correct 11 ms 21460 KB Output is correct
25 Correct 12 ms 21460 KB Output is correct
26 Correct 10 ms 21460 KB Output is correct
27 Correct 9 ms 21460 KB Output is correct
28 Correct 9 ms 21420 KB Output is correct
29 Correct 13 ms 21632 KB Output is correct
30 Correct 10 ms 21460 KB Output is correct
31 Correct 10 ms 21412 KB Output is correct
32 Correct 9 ms 21460 KB Output is correct
33 Correct 9 ms 21460 KB Output is correct
34 Correct 14 ms 21588 KB Output is correct
35 Correct 69 ms 27724 KB Output is correct
36 Correct 101 ms 31112 KB Output is correct
37 Correct 100 ms 31292 KB Output is correct
38 Correct 90 ms 30776 KB Output is correct
39 Correct 11 ms 21716 KB Output is correct
40 Correct 11 ms 21844 KB Output is correct
41 Correct 13 ms 21844 KB Output is correct
42 Correct 11 ms 21648 KB Output is correct
43 Correct 16 ms 21844 KB Output is correct
44 Correct 13 ms 21844 KB Output is correct
45 Correct 14 ms 21716 KB Output is correct
46 Correct 11 ms 21716 KB Output is correct
47 Correct 15 ms 21880 KB Output is correct
48 Correct 13 ms 21844 KB Output is correct
49 Correct 20 ms 22868 KB Output is correct
50 Correct 103 ms 31440 KB Output is correct
51 Correct 15 ms 22228 KB Output is correct
52 Correct 88 ms 29132 KB Output is correct
53 Correct 19 ms 22764 KB Output is correct
54 Correct 86 ms 30124 KB Output is correct
55 Correct 19 ms 22356 KB Output is correct
56 Correct 15 ms 22356 KB Output is correct
57 Correct 15 ms 22376 KB Output is correct
58 Correct 14 ms 22356 KB Output is correct
59 Correct 10 ms 21716 KB Output is correct
60 Correct 63 ms 26696 KB Output is correct
61 Correct 13 ms 21972 KB Output is correct
62 Correct 92 ms 30532 KB Output is correct

Subtask #3
83.0 / 83.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 21460 KB Output is correct
2 Correct 10 ms 21460 KB Output is correct
3 Correct 11 ms 21460 KB Output is correct
4 Correct 12 ms 21460 KB Output is correct
5 Correct 10 ms 21460 KB Output is correct
6 Correct 11 ms 21464 KB Output is correct
7 Correct 11 ms 21460 KB Output is correct
8 Correct 11 ms 21460 KB Output is correct
9 Correct 13 ms 21460 KB Output is correct
10 Correct 10 ms 21460 KB Output is correct
11 Correct 12 ms 21396 KB Output is correct
12 Correct 13 ms 21460 KB Output is correct
13 Correct 10 ms 21460 KB Output is correct
14 Correct 11 ms 21372 KB Output is correct
15 Correct 10 ms 21460 KB Output is correct
16 Correct 11 ms 21460 KB Output is correct
17 Correct 10 ms 21460 KB Output is correct
18 Correct 10 ms 21460 KB Output is correct
19 Correct 13 ms 21436 KB Output is correct
20 Correct 10 ms 21460 KB Output is correct
21 Correct 13 ms 21416 KB Output is correct
22 Correct 10 ms 21460 KB Output is correct
23 Correct 11 ms 21460 KB Output is correct
24 Correct 11 ms 21460 KB Output is correct
25 Correct 12 ms 21460 KB Output is correct
26 Correct 10 ms 21460 KB Output is correct
27 Correct 9 ms 21460 KB Output is correct
28 Correct 9 ms 21420 KB Output is correct
29 Correct 13 ms 21632 KB Output is correct
30 Correct 10 ms 21460 KB Output is correct
31 Correct 10 ms 21412 KB Output is correct
32 Correct 9 ms 21460 KB Output is correct
33 Correct 9 ms 21460 KB Output is correct
34 Correct 14 ms 21588 KB Output is correct
35 Correct 69 ms 27724 KB Output is correct
36 Correct 101 ms 31112 KB Output is correct
37 Correct 100 ms 31292 KB Output is correct
38 Correct 90 ms 30776 KB Output is correct
39 Correct 11 ms 21716 KB Output is correct
40 Correct 11 ms 21844 KB Output is correct
41 Correct 13 ms 21844 KB Output is correct
42 Correct 11 ms 21648 KB Output is correct
43 Correct 16 ms 21844 KB Output is correct
44 Correct 13 ms 21844 KB Output is correct
45 Correct 14 ms 21716 KB Output is correct
46 Correct 11 ms 21716 KB Output is correct
47 Correct 15 ms 21880 KB Output is correct
48 Correct 13 ms 21844 KB Output is correct
49 Correct 20 ms 22868 KB Output is correct
50 Correct 103 ms 31440 KB Output is correct
51 Correct 15 ms 22228 KB Output is correct
52 Correct 88 ms 29132 KB Output is correct
53 Correct 19 ms 22764 KB Output is correct
54 Correct 86 ms 30124 KB Output is correct
55 Correct 19 ms 22356 KB Output is correct
56 Correct 15 ms 22356 KB Output is correct
57 Correct 15 ms 22376 KB Output is correct
58 Correct 14 ms 22356 KB Output is correct
59 Correct 10 ms 21716 KB Output is correct
60 Correct 63 ms 26696 KB Output is correct
61 Correct 13 ms 21972 KB Output is correct
62 Correct 92 ms 30532 KB Output is correct
63 Correct 545 ms 87892 KB Output is correct
64 Correct 516 ms 87944 KB Output is correct
65 Correct 549 ms 87948 KB Output is correct
66 Correct 155 ms 35604 KB Output is correct
67 Correct 286 ms 45544 KB Output is correct
68 Correct 141 ms 35652 KB Output is correct
69 Correct 409 ms 41536 KB Output is correct
70 Correct 150 ms 35656 KB Output is correct
71 Correct 143 ms 35592 KB Output is correct
72 Correct 340 ms 44336 KB Output is correct
73 Correct 368 ms 44520 KB Output is correct
74 Correct 1061 ms 75688 KB Output is correct
75 Correct 605 ms 49948 KB Output is correct
76 Correct 751 ms 63176 KB Output is correct
77 Correct 716 ms 63408 KB Output is correct
78 Correct 235 ms 44840 KB Output is correct
79 Correct 350 ms 48968 KB Output is correct
80 Correct 225 ms 43668 KB Output is correct
81 Correct 309 ms 47044 KB Output is correct
82 Correct 941 ms 69096 KB Output is correct
83 Correct 823 ms 69100 KB Output is correct
84 Correct 639 ms 68332 KB Output is correct
85 Correct 675 ms 68308 KB Output is correct
86 Correct 176 ms 39728 KB Output is correct
87 Correct 210 ms 41740 KB Output is correct
88 Correct 396 ms 44712 KB Output is correct
89 Correct 698 ms 60744 KB Output is correct