oj.uz

Submission #953217

# Submission time Handle Problem Language Result Execution time Memory
953217 2024-03-25T17:35:00 Z andrei_boaca Making Friends on Joitter is Fun (JOI20_joitter2) C++17
1 / 100
 106 ms 38536 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;
ll n,m,ans;
ll comp[100005];
vector<ll> dsu[100005];
set<ll> par[100005];
set<pll> edgenod[100005];
set<ll> edgecomp[100005];
void dsu_merge(ll c1,ll c2)
{
    ll nr1=(int)dsu[c1].size()+(int)par[c1].size()+(int)edgenod[c1].size();
    ll nr2=(int)dsu[c2].size()+(int)par[c2].size()+(int)edgenod[c2].size();
    if(nr1<nr2)
        swap(c1,c2);
    ll sz2=dsu[c2].size();
    ll sz1=dsu[c1].size();
    ll val=(ll)dsu[c1].size()*(ll)dsu[c2].size();
    val=val*2LL;
    ans+=val;
    val=(ll)par[c1].size()*sz2;
    ans+=val;
    vector<ll> v;
    for(ll a:par[c1])
        v.push_back(a);
    for(ll x:par[c2])
    {
        edgenod[comp[x]].erase({x,c2});
        if(edgecomp[comp[x]].find(c2)!=edgecomp[comp[x]].end())
            edgecomp[comp[x]].erase(c2);
        if(comp[x]==c1)
        {
            ans-=sz2;
            continue;
        }
        v.push_back(comp[x]);
        if(par[c1].find(x)==par[c1].end())
        {
            par[c1].insert(x);
            ans+=sz1;
            edgenod[comp[x]].insert({x,c1});
            edgecomp[comp[x]].insert(c1);
        }
        else
            ans-=sz2;
    }
    for(pll p:edgenod[c2])
    {
        ll x=p.first;
        ll c=p.second;
        if(par[c].find(x)!=par[c].end())
            par[c].erase(x);
        if(c==c1)
        {
            ans-=(sz1+sz2);
            continue;
        }
        v.push_back(comp[x]);
        edgenod[c1].insert({x,c});
        edgecomp[c1].insert(c);
        par[c].insert(x);
    }
    edgenod[c2].clear();
    par[c2].clear();
    edgecomp[c2].clear();
    for(ll i:dsu[c2])
    {
        dsu[c1].push_back(i);
        comp[i]=c1;
    }
    dsu[c2].clear();
    for(ll i:v)
        if(edgecomp[c1].find(i)!=edgecomp[c1].end())
            if(edgecomp[i].find(c1)!=edgecomp[i].end())
            {
                dsu_merge(i,c1);
            }
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin>>n>>m;
    for(int i=1;i<=n;i++)
    {
        comp[i]=i;
        dsu[i].push_back(i);
    }
    while(m--)
    {
        ll a,b;
        cin>>a>>b;
        ll c1=comp[a];
        ll c2=comp[b];
        if(c1==c2)
        {
            cout<<ans<<'\n';
            continue;
        }
        if(edgecomp[c2].find(c1)!=edgecomp[c2].end())
        {
            dsu_merge(c1,c2);
            cout<<ans<<'\n';
            continue;
        }
        if(edgenod[c1].find({a,c2})==edgenod[c1].end())
        {
            ans+=dsu[c2].size();
            edgenod[c1].insert({a,c2});
            edgecomp[c1].insert(c2);
            par[c2].insert(a);
        }
        cout<<ans<<'\n';
    }
    return 0;
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 16988 KB Output is correct
2 Correct 4 ms 16988 KB Output is correct
3 Correct 3 ms 16988 KB Output is correct
4 Correct 3 ms 16988 KB Output is correct
5 Correct 4 ms 16984 KB Output is correct
6 Correct 3 ms 16988 KB Output is correct
7 Correct 4 ms 16988 KB Output is correct
8 Correct 4 ms 17084 KB Output is correct
9 Correct 5 ms 17244 KB Output is correct
10 Correct 5 ms 16988 KB Output is correct
11 Correct 4 ms 17048 KB Output is correct
12 Correct 4 ms 16988 KB Output is correct
13 Correct 3 ms 17240 KB Output is correct
14 Correct 3 ms 16824 KB Output is correct
15 Correct 4 ms 16988 KB Output is correct
16 Correct 3 ms 16988 KB Output is correct
17 Correct 3 ms 16988 KB Output is correct
18 Correct 3 ms 16988 KB Output is correct
19 Correct 3 ms 16988 KB Output is correct
20 Correct 3 ms 16988 KB Output is correct
21 Correct 4 ms 16988 KB Output is correct
22 Correct 3 ms 16988 KB Output is correct
23 Correct 4 ms 17144 KB Output is correct
24 Correct 3 ms 16988 KB Output is correct
25 Correct 4 ms 16984 KB Output is correct
26 Correct 3 ms 16984 KB Output is correct
27 Correct 4 ms 16984 KB Output is correct
28 Correct 4 ms 16988 KB Output is correct
29 Correct 4 ms 17020 KB Output is correct
30 Correct 3 ms 16988 KB Output is correct
31 Correct 4 ms 16988 KB Output is correct
32 Correct 4 ms 17008 KB Output is correct
33 Correct 4 ms 16988 KB Output is correct

Subtask #2
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 16988 KB Output is correct
2 Correct 4 ms 16988 KB Output is correct
3 Correct 3 ms 16988 KB Output is correct
4 Correct 3 ms 16988 KB Output is correct
5 Correct 4 ms 16984 KB Output is correct
6 Correct 3 ms 16988 KB Output is correct
7 Correct 4 ms 16988 KB Output is correct
8 Correct 4 ms 17084 KB Output is correct
9 Correct 5 ms 17244 KB Output is correct
10 Correct 5 ms 16988 KB Output is correct
11 Correct 4 ms 17048 KB Output is correct
12 Correct 4 ms 16988 KB Output is correct
13 Correct 3 ms 17240 KB Output is correct
14 Correct 3 ms 16824 KB Output is correct
15 Correct 4 ms 16988 KB Output is correct
16 Correct 3 ms 16988 KB Output is correct
17 Correct 3 ms 16988 KB Output is correct
18 Correct 3 ms 16988 KB Output is correct
19 Correct 3 ms 16988 KB Output is correct
20 Correct 3 ms 16988 KB Output is correct
21 Correct 4 ms 16988 KB Output is correct
22 Correct 3 ms 16988 KB Output is correct
23 Correct 4 ms 17144 KB Output is correct
24 Correct 3 ms 16988 KB Output is correct
25 Correct 4 ms 16984 KB Output is correct
26 Correct 3 ms 16984 KB Output is correct
27 Correct 4 ms 16984 KB Output is correct
28 Correct 4 ms 16988 KB Output is correct
29 Correct 4 ms 17020 KB Output is correct
30 Correct 3 ms 16988 KB Output is correct
31 Correct 4 ms 16988 KB Output is correct
32 Correct 4 ms 17008 KB Output is correct
33 Correct 4 ms 16988 KB Output is correct
34 Correct 5 ms 16984 KB Output is correct
35 Correct 65 ms 24252 KB Output is correct
36 Correct 106 ms 38224 KB Output is correct
37 Correct 105 ms 38536 KB Output is correct
38 Correct 102 ms 37892 KB Output is correct
39 Correct 4 ms 16984 KB Output is correct
40 Correct 6 ms 17240 KB Output is correct
41 Correct 5 ms 17244 KB Output is correct
42 Correct 5 ms 16988 KB Output is correct
43 Correct 19 ms 17240 KB Output is correct
44 Correct 19 ms 17304 KB Output is correct
45 Correct 5 ms 16984 KB Output is correct
46 Correct 4 ms 16988 KB Output is correct
47 Correct 6 ms 17244 KB Output is correct
48 Correct 5 ms 17308 KB Output is correct
49 Incorrect 23 ms 22944 KB Output isn't correct
50 Halted 0 ms 0 KB -

Subtask #3
0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 16988 KB Output is correct
2 Correct 4 ms 16988 KB Output is correct
3 Correct 3 ms 16988 KB Output is correct
4 Correct 3 ms 16988 KB Output is correct
5 Correct 4 ms 16984 KB Output is correct
6 Correct 3 ms 16988 KB Output is correct
7 Correct 4 ms 16988 KB Output is correct
8 Correct 4 ms 17084 KB Output is correct
9 Correct 5 ms 17244 KB Output is correct
10 Correct 5 ms 16988 KB Output is correct
11 Correct 4 ms 17048 KB Output is correct
12 Correct 4 ms 16988 KB Output is correct
13 Correct 3 ms 17240 KB Output is correct
14 Correct 3 ms 16824 KB Output is correct
15 Correct 4 ms 16988 KB Output is correct
16 Correct 3 ms 16988 KB Output is correct
17 Correct 3 ms 16988 KB Output is correct
18 Correct 3 ms 16988 KB Output is correct
19 Correct 3 ms 16988 KB Output is correct
20 Correct 3 ms 16988 KB Output is correct
21 Correct 4 ms 16988 KB Output is correct
22 Correct 3 ms 16988 KB Output is correct
23 Correct 4 ms 17144 KB Output is correct
24 Correct 3 ms 16988 KB Output is correct
25 Correct 4 ms 16984 KB Output is correct
26 Correct 3 ms 16984 KB Output is correct
27 Correct 4 ms 16984 KB Output is correct
28 Correct 4 ms 16988 KB Output is correct
29 Correct 4 ms 17020 KB Output is correct
30 Correct 3 ms 16988 KB Output is correct
31 Correct 4 ms 16988 KB Output is correct
32 Correct 4 ms 17008 KB Output is correct
33 Correct 4 ms 16988 KB Output is correct
34 Correct 5 ms 16984 KB Output is correct
35 Correct 65 ms 24252 KB Output is correct
36 Correct 106 ms 38224 KB Output is correct
37 Correct 105 ms 38536 KB Output is correct
38 Correct 102 ms 37892 KB Output is correct
39 Correct 4 ms 16984 KB Output is correct
40 Correct 6 ms 17240 KB Output is correct
41 Correct 5 ms 17244 KB Output is correct
42 Correct 5 ms 16988 KB Output is correct
43 Correct 19 ms 17240 KB Output is correct
44 Correct 19 ms 17304 KB Output is correct
45 Correct 5 ms 16984 KB Output is correct
46 Correct 4 ms 16988 KB Output is correct
47 Correct 6 ms 17244 KB Output is correct
48 Correct 5 ms 17308 KB Output is correct
49 Incorrect 23 ms 22944 KB Output isn't correct
50 Halted 0 ms 0 KB -