oj.uz

Submission #953218

# Submission time Handle Problem Language Result Execution time Memory
953218 2024-03-25T17:37:29 Z andrei_boaca Making Friends on Joitter is Fun (JOI20_joitter2) C++17
1 / 100
 193 ms 38736 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();
    sort(v.begin(),v.end());
    v.erase(unique(v.begin(),v.end()),v.end());
    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 16984 KB Output is correct
2 Correct 4 ms 16988 KB Output is correct
3 Correct 4 ms 16988 KB Output is correct
4 Correct 4 ms 16988 KB Output is correct
5 Correct 4 ms 16988 KB Output is correct
6 Correct 4 ms 16816 KB Output is correct
7 Correct 4 ms 16988 KB Output is correct
8 Correct 4 ms 16988 KB Output is correct
9 Correct 4 ms 16988 KB Output is correct
10 Correct 4 ms 16984 KB Output is correct
11 Correct 3 ms 16988 KB Output is correct
12 Correct 3 ms 16988 KB Output is correct
13 Correct 3 ms 16988 KB Output is correct
14 Correct 3 ms 16988 KB Output is correct
15 Correct 3 ms 16988 KB Output is correct
16 Correct 3 ms 16988 KB Output is correct
17 Correct 5 ms 16988 KB Output is correct
18 Correct 3 ms 16984 KB Output is correct
19 Correct 4 ms 16984 KB Output is correct
20 Correct 4 ms 16988 KB Output is correct
21 Correct 4 ms 17088 KB Output is correct
22 Correct 4 ms 16988 KB Output is correct
23 Correct 4 ms 16984 KB Output is correct
24 Correct 4 ms 16984 KB Output is correct
25 Correct 4 ms 16988 KB Output is correct
26 Correct 3 ms 16988 KB Output is correct
27 Correct 3 ms 16988 KB Output is correct
28 Correct 4 ms 16832 KB Output is correct
29 Correct 3 ms 16988 KB Output is correct
30 Correct 3 ms 16988 KB Output is correct
31 Correct 4 ms 16988 KB Output is correct
32 Correct 3 ms 16988 KB Output is correct
33 Correct 5 ms 16988 KB Output is correct

Subtask #2
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 16984 KB Output is correct
2 Correct 4 ms 16988 KB Output is correct
3 Correct 4 ms 16988 KB Output is correct
4 Correct 4 ms 16988 KB Output is correct
5 Correct 4 ms 16988 KB Output is correct
6 Correct 4 ms 16816 KB Output is correct
7 Correct 4 ms 16988 KB Output is correct
8 Correct 4 ms 16988 KB Output is correct
9 Correct 4 ms 16988 KB Output is correct
10 Correct 4 ms 16984 KB Output is correct
11 Correct 3 ms 16988 KB Output is correct
12 Correct 3 ms 16988 KB Output is correct
13 Correct 3 ms 16988 KB Output is correct
14 Correct 3 ms 16988 KB Output is correct
15 Correct 3 ms 16988 KB Output is correct
16 Correct 3 ms 16988 KB Output is correct
17 Correct 5 ms 16988 KB Output is correct
18 Correct 3 ms 16984 KB Output is correct
19 Correct 4 ms 16984 KB Output is correct
20 Correct 4 ms 16988 KB Output is correct
21 Correct 4 ms 17088 KB Output is correct
22 Correct 4 ms 16988 KB Output is correct
23 Correct 4 ms 16984 KB Output is correct
24 Correct 4 ms 16984 KB Output is correct
25 Correct 4 ms 16988 KB Output is correct
26 Correct 3 ms 16988 KB Output is correct
27 Correct 3 ms 16988 KB Output is correct
28 Correct 4 ms 16832 KB Output is correct
29 Correct 3 ms 16988 KB Output is correct
30 Correct 3 ms 16988 KB Output is correct
31 Correct 4 ms 16988 KB Output is correct
32 Correct 3 ms 16988 KB Output is correct
33 Correct 5 ms 16988 KB Output is correct
34 Correct 6 ms 16988 KB Output is correct
35 Correct 89 ms 24516 KB Output is correct
36 Correct 193 ms 38224 KB Output is correct
37 Correct 191 ms 38736 KB Output is correct
38 Correct 186 ms 37720 KB Output is correct
39 Correct 5 ms 16988 KB Output is correct
40 Correct 6 ms 17244 KB Output is correct
41 Correct 6 ms 17288 KB Output is correct
42 Correct 5 ms 16988 KB Output is correct
43 Correct 25 ms 17332 KB Output is correct
44 Correct 25 ms 17244 KB Output is correct
45 Correct 5 ms 16988 KB Output is correct
46 Correct 5 ms 17080 KB Output is correct
47 Correct 6 ms 17244 KB Output is correct
48 Correct 7 ms 17244 KB Output is correct
49 Incorrect 37 ms 23020 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 16984 KB Output is correct
2 Correct 4 ms 16988 KB Output is correct
3 Correct 4 ms 16988 KB Output is correct
4 Correct 4 ms 16988 KB Output is correct
5 Correct 4 ms 16988 KB Output is correct
6 Correct 4 ms 16816 KB Output is correct
7 Correct 4 ms 16988 KB Output is correct
8 Correct 4 ms 16988 KB Output is correct
9 Correct 4 ms 16988 KB Output is correct
10 Correct 4 ms 16984 KB Output is correct
11 Correct 3 ms 16988 KB Output is correct
12 Correct 3 ms 16988 KB Output is correct
13 Correct 3 ms 16988 KB Output is correct
14 Correct 3 ms 16988 KB Output is correct
15 Correct 3 ms 16988 KB Output is correct
16 Correct 3 ms 16988 KB Output is correct
17 Correct 5 ms 16988 KB Output is correct
18 Correct 3 ms 16984 KB Output is correct
19 Correct 4 ms 16984 KB Output is correct
20 Correct 4 ms 16988 KB Output is correct
21 Correct 4 ms 17088 KB Output is correct
22 Correct 4 ms 16988 KB Output is correct
23 Correct 4 ms 16984 KB Output is correct
24 Correct 4 ms 16984 KB Output is correct
25 Correct 4 ms 16988 KB Output is correct
26 Correct 3 ms 16988 KB Output is correct
27 Correct 3 ms 16988 KB Output is correct
28 Correct 4 ms 16832 KB Output is correct
29 Correct 3 ms 16988 KB Output is correct
30 Correct 3 ms 16988 KB Output is correct
31 Correct 4 ms 16988 KB Output is correct
32 Correct 3 ms 16988 KB Output is correct
33 Correct 5 ms 16988 KB Output is correct
34 Correct 6 ms 16988 KB Output is correct
35 Correct 89 ms 24516 KB Output is correct
36 Correct 193 ms 38224 KB Output is correct
37 Correct 191 ms 38736 KB Output is correct
38 Correct 186 ms 37720 KB Output is correct
39 Correct 5 ms 16988 KB Output is correct
40 Correct 6 ms 17244 KB Output is correct
41 Correct 6 ms 17288 KB Output is correct
42 Correct 5 ms 16988 KB Output is correct
43 Correct 25 ms 17332 KB Output is correct
44 Correct 25 ms 17244 KB Output is correct
45 Correct 5 ms 16988 KB Output is correct
46 Correct 5 ms 17080 KB Output is correct
47 Correct 6 ms 17244 KB Output is correct
48 Correct 7 ms 17244 KB Output is correct
49 Incorrect 37 ms 23020 KB Output isn't correct
50 Halted 0 ms 0 KB -