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Submission #878391

# Submission time Handle Problem Language Result Execution time Memory
878391 2023-11-24T09:50:23 Z amirhoseinfar1385 Making Friends on Joitter is Fun (JOI20_joitter2) C++17
100 / 100
 400 ms 44400 KB 
#include<bits/stdc++.h>
//tof_to_in_zendegy_ke_man_eshtebahy_ye_soal_dg_hal_kardam
using namespace std;
const int maxn=100000+10;
int n,m; 

struct dsu{
	int par[maxn],sz[maxn];
	set<pair<int,int>>kho[maxn];
	set<int>vorod[maxn];
	long long res;
	dsu(){
		res=0;
		for(int i=1;i<maxn;i++){
			par[i]=i;
			sz[i]=1;
		}
	}
	int root(int u){
		if(u==par[u]){
			return u;
		}
		return par[u]=root(par[u]);
	}

	void con(int u,int v){
		u=root(u),v=root(v);
		//cout<<u<<" "<<v<<" con:\n";
		if(sz[u]>sz[v]){
			swap(u,v);
		}
		vector<pair<int,int>>allq;
		for(auto x:kho[u]){
			res-=sz[x.first];
			vorod[x.first].erase(x.second);
			allq.push_back(make_pair(x.second,x.first));
		}
		res+=sz[u]*(2*sz[v]+vorod[v].size());
		res-=sz[u]*vorod[u].size();
		for(auto x:vorod[u]){
			int rootx=root(x);
			kho[rootx].erase(make_pair(u,x));
			allq.push_back(make_pair(x,u));
		}
		vorod[u].clear();
		kho[u].clear();
		par[u]=v;
		sz[v]+=sz[u];
		//cout<<"wtf: "<<allq.size()<<" "<<u<<" "<<v<<" "<<sz[u]<<" "<<sz[v]<<"\n";
		for(auto x:allq){
			//cout<<"injy: "<<x.first<<" "<<x.second<<" "<<res<<"\n";
			add(x.first,x.second);
		}
	}
	void add(int u,int v){
		int rootv=root(v),rootu=root(u);
		//cout<<"add: "<<u<<" "<<v<<" "<<rootu<<" "<<rootv<<"\n";
		if(rootu==rootv||vorod[rootv].count(u)!=0){
			//cout<<"salam"<<endl;
			return ;
		}
		auto x=kho[rootv].lower_bound(make_pair(rootu,-1));
		if(x!=kho[rootv].end()&&(*x).first==rootu){
			return con(u,v);
		}
		//cout<<"nababa: "<<sz[rootv]<<'\n';
		res+=sz[rootv];
		kho[rootu].insert(make_pair(rootv,u));
		vorod[rootv].insert(u);
	}
}ds;

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin>>n>>m;
	for(int i=1;i<=m;i++){
		int u,v;
		cin>>u>>v;
		ds.add(u,v);
		cout<<ds.res<<"\n";
	}	
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10584 KB Output is correct
2 Correct 2 ms 10584 KB Output is correct
3 Correct 2 ms 10588 KB Output is correct
4 Correct 3 ms 10588 KB Output is correct
5 Correct 3 ms 10588 KB Output is correct
6 Correct 3 ms 10584 KB Output is correct
7 Correct 3 ms 10840 KB Output is correct
8 Correct 3 ms 10588 KB Output is correct
9 Correct 3 ms 10588 KB Output is correct
10 Correct 2 ms 10588 KB Output is correct
11 Correct 2 ms 10440 KB Output is correct
12 Correct 2 ms 10584 KB Output is correct
13 Correct 2 ms 10584 KB Output is correct
14 Correct 2 ms 10588 KB Output is correct
15 Correct 2 ms 10588 KB Output is correct
16 Correct 2 ms 10588 KB Output is correct
17 Correct 2 ms 10588 KB Output is correct
18 Correct 2 ms 10636 KB Output is correct
19 Correct 2 ms 10588 KB Output is correct
20 Correct 3 ms 10588 KB Output is correct
21 Correct 3 ms 10572 KB Output is correct
22 Correct 3 ms 10584 KB Output is correct
23 Correct 3 ms 10584 KB Output is correct
24 Correct 2 ms 10588 KB Output is correct
25 Correct 3 ms 10672 KB Output is correct
26 Correct 3 ms 10588 KB Output is correct
27 Correct 3 ms 10652 KB Output is correct
28 Correct 2 ms 10588 KB Output is correct
29 Correct 3 ms 10588 KB Output is correct
30 Correct 2 ms 10588 KB Output is correct
31 Correct 3 ms 10588 KB Output is correct
32 Correct 2 ms 10588 KB Output is correct
33 Correct 3 ms 10588 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10584 KB Output is correct
2 Correct 2 ms 10584 KB Output is correct
3 Correct 2 ms 10588 KB Output is correct
4 Correct 3 ms 10588 KB Output is correct
5 Correct 3 ms 10588 KB Output is correct
6 Correct 3 ms 10584 KB Output is correct
7 Correct 3 ms 10840 KB Output is correct
8 Correct 3 ms 10588 KB Output is correct
9 Correct 3 ms 10588 KB Output is correct
10 Correct 2 ms 10588 KB Output is correct
11 Correct 2 ms 10440 KB Output is correct
12 Correct 2 ms 10584 KB Output is correct
13 Correct 2 ms 10584 KB Output is correct
14 Correct 2 ms 10588 KB Output is correct
15 Correct 2 ms 10588 KB Output is correct
16 Correct 2 ms 10588 KB Output is correct
17 Correct 2 ms 10588 KB Output is correct
18 Correct 2 ms 10636 KB Output is correct
19 Correct 2 ms 10588 KB Output is correct
20 Correct 3 ms 10588 KB Output is correct
21 Correct 3 ms 10572 KB Output is correct
22 Correct 3 ms 10584 KB Output is correct
23 Correct 3 ms 10584 KB Output is correct
24 Correct 2 ms 10588 KB Output is correct
25 Correct 3 ms 10672 KB Output is correct
26 Correct 3 ms 10588 KB Output is correct
27 Correct 3 ms 10652 KB Output is correct
28 Correct 2 ms 10588 KB Output is correct
29 Correct 3 ms 10588 KB Output is correct
30 Correct 2 ms 10588 KB Output is correct
31 Correct 3 ms 10588 KB Output is correct
32 Correct 2 ms 10588 KB Output is correct
33 Correct 3 ms 10588 KB Output is correct
34 Correct 4 ms 10588 KB Output is correct
35 Correct 56 ms 16196 KB Output is correct
36 Correct 71 ms 18516 KB Output is correct
37 Correct 71 ms 18492 KB Output is correct
38 Correct 70 ms 18260 KB Output is correct
39 Correct 4 ms 10588 KB Output is correct
40 Correct 4 ms 10588 KB Output is correct
41 Correct 5 ms 10588 KB Output is correct
42 Correct 3 ms 10588 KB Output is correct
43 Correct 4 ms 10584 KB Output is correct
44 Correct 4 ms 10648 KB Output is correct
45 Correct 5 ms 10588 KB Output is correct
46 Correct 4 ms 10588 KB Output is correct
47 Correct 6 ms 10588 KB Output is correct
48 Correct 4 ms 10588 KB Output is correct
49 Correct 9 ms 11356 KB Output is correct
50 Correct 73 ms 18496 KB Output is correct
51 Correct 6 ms 10840 KB Output is correct
52 Correct 78 ms 17420 KB Output is correct
53 Correct 8 ms 11356 KB Output is correct
54 Correct 66 ms 18000 KB Output is correct
55 Correct 5 ms 10840 KB Output is correct
56 Correct 5 ms 10844 KB Output is correct
57 Correct 5 ms 11100 KB Output is correct
58 Correct 5 ms 11100 KB Output is correct
59 Correct 4 ms 10688 KB Output is correct
60 Correct 56 ms 15444 KB Output is correct
61 Correct 4 ms 10588 KB Output is correct
62 Correct 70 ms 18256 KB Output is correct

Subtask #3
83.0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10584 KB Output is correct
2 Correct 2 ms 10584 KB Output is correct
3 Correct 2 ms 10588 KB Output is correct
4 Correct 3 ms 10588 KB Output is correct
5 Correct 3 ms 10588 KB Output is correct
6 Correct 3 ms 10584 KB Output is correct
7 Correct 3 ms 10840 KB Output is correct
8 Correct 3 ms 10588 KB Output is correct
9 Correct 3 ms 10588 KB Output is correct
10 Correct 2 ms 10588 KB Output is correct
11 Correct 2 ms 10440 KB Output is correct
12 Correct 2 ms 10584 KB Output is correct
13 Correct 2 ms 10584 KB Output is correct
14 Correct 2 ms 10588 KB Output is correct
15 Correct 2 ms 10588 KB Output is correct
16 Correct 2 ms 10588 KB Output is correct
17 Correct 2 ms 10588 KB Output is correct
18 Correct 2 ms 10636 KB Output is correct
19 Correct 2 ms 10588 KB Output is correct
20 Correct 3 ms 10588 KB Output is correct
21 Correct 3 ms 10572 KB Output is correct
22 Correct 3 ms 10584 KB Output is correct
23 Correct 3 ms 10584 KB Output is correct
24 Correct 2 ms 10588 KB Output is correct
25 Correct 3 ms 10672 KB Output is correct
26 Correct 3 ms 10588 KB Output is correct
27 Correct 3 ms 10652 KB Output is correct
28 Correct 2 ms 10588 KB Output is correct
29 Correct 3 ms 10588 KB Output is correct
30 Correct 2 ms 10588 KB Output is correct
31 Correct 3 ms 10588 KB Output is correct
32 Correct 2 ms 10588 KB Output is correct
33 Correct 3 ms 10588 KB Output is correct
34 Correct 4 ms 10588 KB Output is correct
35 Correct 56 ms 16196 KB Output is correct
36 Correct 71 ms 18516 KB Output is correct
37 Correct 71 ms 18492 KB Output is correct
38 Correct 70 ms 18260 KB Output is correct
39 Correct 4 ms 10588 KB Output is correct
40 Correct 4 ms 10588 KB Output is correct
41 Correct 5 ms 10588 KB Output is correct
42 Correct 3 ms 10588 KB Output is correct
43 Correct 4 ms 10584 KB Output is correct
44 Correct 4 ms 10648 KB Output is correct
45 Correct 5 ms 10588 KB Output is correct
46 Correct 4 ms 10588 KB Output is correct
47 Correct 6 ms 10588 KB Output is correct
48 Correct 4 ms 10588 KB Output is correct
49 Correct 9 ms 11356 KB Output is correct
50 Correct 73 ms 18496 KB Output is correct
51 Correct 6 ms 10840 KB Output is correct
52 Correct 78 ms 17420 KB Output is correct
53 Correct 8 ms 11356 KB Output is correct
54 Correct 66 ms 18000 KB Output is correct
55 Correct 5 ms 10840 KB Output is correct
56 Correct 5 ms 10844 KB Output is correct
57 Correct 5 ms 11100 KB Output is correct
58 Correct 5 ms 11100 KB Output is correct
59 Correct 4 ms 10688 KB Output is correct
60 Correct 56 ms 15444 KB Output is correct
61 Correct 4 ms 10588 KB Output is correct
62 Correct 70 ms 18256 KB Output is correct
63 Correct 237 ms 44016 KB Output is correct
64 Correct 242 ms 44400 KB Output is correct
65 Correct 239 ms 44112 KB Output is correct
66 Correct 61 ms 14800 KB Output is correct
67 Correct 105 ms 18880 KB Output is correct
68 Correct 61 ms 14928 KB Output is correct
69 Correct 133 ms 19540 KB Output is correct
70 Correct 64 ms 14788 KB Output is correct
71 Correct 64 ms 15060 KB Output is correct
72 Correct 117 ms 19028 KB Output is correct
73 Correct 118 ms 18900 KB Output is correct
74 Correct 400 ms 29776 KB Output is correct
75 Correct 199 ms 24296 KB Output is correct
76 Correct 293 ms 27460 KB Output is correct
77 Correct 274 ms 27432 KB Output is correct
78 Correct 108 ms 18536 KB Output is correct
79 Correct 158 ms 22072 KB Output is correct
80 Correct 96 ms 18488 KB Output is correct
81 Correct 169 ms 21812 KB Output is correct
82 Correct 294 ms 33020 KB Output is correct
83 Correct 288 ms 32804 KB Output is correct
84 Correct 258 ms 33360 KB Output is correct
85 Correct 300 ms 33620 KB Output is correct
86 Correct 69 ms 14164 KB Output is correct
87 Correct 92 ms 16476 KB Output is correct
88 Correct 156 ms 19024 KB Output is correct
89 Correct 368 ms 26892 KB Output is correct