oj.uz

Submission #953232

# Submission time Handle Problem Language Result Execution time Memory
953232 2024-03-25T17:47:24 Z andrei_boaca Making Friends on Joitter is Fun (JOI20_joitter2) C++17
17 / 100
 4563 ms 140228 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;
    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;
        }
        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;
        }
        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();
    if(par[c1].empty())
        return;
    vector<ll> v;
    for(ll i:par[c1])
    {
        v.push_back(comp[i]);
        if(v.size()>500)
            break;
    }
    for(auto it=prev(par[c1].end());v.size()<1000;it--)
    {
        v.push_back((*it));
        if(it==par[c1].begin())
            break;
    }
    for(ll i:v)
        if(edgecomp[c1].find(i)!=edgecomp[c1].end())
            if(edgecomp[i].find(c1)!=edgecomp[i].end())
            {
                dsu_merge(i,c1);
                break;
            }
}
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 3 ms 16988 KB Output is correct
3 Correct 3 ms 16988 KB Output is correct
4 Correct 5 ms 16988 KB Output is correct
5 Correct 4 ms 16988 KB Output is correct
6 Correct 4 ms 16984 KB Output is correct
7 Correct 4 ms 16984 KB Output is correct
8 Correct 4 ms 16988 KB Output is correct
9 Correct 4 ms 16988 KB Output is correct
10 Correct 3 ms 16988 KB Output is correct
11 Correct 4 ms 16988 KB Output is correct
12 Correct 3 ms 16988 KB Output is correct
13 Correct 3 ms 17008 KB Output is correct
14 Correct 4 ms 16988 KB Output is correct
15 Correct 4 ms 16988 KB Output is correct
16 Correct 3 ms 16988 KB Output is correct
17 Correct 5 ms 17008 KB Output is correct
18 Correct 4 ms 16984 KB Output is correct
19 Correct 4 ms 17032 KB Output is correct
20 Correct 3 ms 16988 KB Output is correct
21 Correct 4 ms 16988 KB Output is correct
22 Correct 4 ms 16988 KB Output is correct
23 Correct 4 ms 16988 KB Output is correct
24 Correct 4 ms 16988 KB Output is correct
25 Correct 4 ms 16988 KB Output is correct
26 Correct 4 ms 17004 KB Output is correct
27 Correct 4 ms 17020 KB Output is correct
28 Correct 5 ms 16988 KB Output is correct
29 Correct 3 ms 17240 KB Output is correct
30 Correct 3 ms 16988 KB Output is correct
31 Correct 4 ms 16988 KB Output is correct
32 Correct 5 ms 16988 KB Output is correct
33 Correct 4 ms 16988 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 16988 KB Output is correct
2 Correct 3 ms 16988 KB Output is correct
3 Correct 3 ms 16988 KB Output is correct
4 Correct 5 ms 16988 KB Output is correct
5 Correct 4 ms 16988 KB Output is correct
6 Correct 4 ms 16984 KB Output is correct
7 Correct 4 ms 16984 KB Output is correct
8 Correct 4 ms 16988 KB Output is correct
9 Correct 4 ms 16988 KB Output is correct
10 Correct 3 ms 16988 KB Output is correct
11 Correct 4 ms 16988 KB Output is correct
12 Correct 3 ms 16988 KB Output is correct
13 Correct 3 ms 17008 KB Output is correct
14 Correct 4 ms 16988 KB Output is correct
15 Correct 4 ms 16988 KB Output is correct
16 Correct 3 ms 16988 KB Output is correct
17 Correct 5 ms 17008 KB Output is correct
18 Correct 4 ms 16984 KB Output is correct
19 Correct 4 ms 17032 KB Output is correct
20 Correct 3 ms 16988 KB Output is correct
21 Correct 4 ms 16988 KB Output is correct
22 Correct 4 ms 16988 KB Output is correct
23 Correct 4 ms 16988 KB Output is correct
24 Correct 4 ms 16988 KB Output is correct
25 Correct 4 ms 16988 KB Output is correct
26 Correct 4 ms 17004 KB Output is correct
27 Correct 4 ms 17020 KB Output is correct
28 Correct 5 ms 16988 KB Output is correct
29 Correct 3 ms 17240 KB Output is correct
30 Correct 3 ms 16988 KB Output is correct
31 Correct 4 ms 16988 KB Output is correct
32 Correct 5 ms 16988 KB Output is correct
33 Correct 4 ms 16988 KB Output is correct
34 Correct 7 ms 17244 KB Output is correct
35 Correct 67 ms 24668 KB Output is correct
36 Correct 101 ms 34644 KB Output is correct
37 Correct 107 ms 34848 KB Output is correct
38 Correct 97 ms 34556 KB Output is correct
39 Correct 4 ms 16988 KB Output is correct
40 Correct 5 ms 17244 KB Output is correct
41 Correct 6 ms 17300 KB Output is correct
42 Correct 5 ms 16988 KB Output is correct
43 Correct 35 ms 17244 KB Output is correct
44 Correct 39 ms 17244 KB Output is correct
45 Correct 4 ms 16988 KB Output is correct
46 Correct 5 ms 16988 KB Output is correct
47 Correct 7 ms 17344 KB Output is correct
48 Correct 7 ms 17244 KB Output is correct
49 Correct 28 ms 24500 KB Output is correct
50 Correct 107 ms 34560 KB Output is correct
51 Correct 34 ms 17500 KB Output is correct
52 Correct 90 ms 33360 KB Output is correct
53 Correct 26 ms 25688 KB Output is correct
54 Correct 100 ms 34132 KB Output is correct
55 Correct 36 ms 30292 KB Output is correct
56 Correct 30 ms 30556 KB Output is correct
57 Correct 25 ms 29008 KB Output is correct
58 Correct 27 ms 29696 KB Output is correct
59 Correct 5 ms 17244 KB Output is correct
60 Correct 55 ms 19540 KB Output is correct
61 Correct 11 ms 17244 KB Output is correct
62 Correct 96 ms 34172 KB Output is correct

Subtask #3
0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 16988 KB Output is correct
2 Correct 3 ms 16988 KB Output is correct
3 Correct 3 ms 16988 KB Output is correct
4 Correct 5 ms 16988 KB Output is correct
5 Correct 4 ms 16988 KB Output is correct
6 Correct 4 ms 16984 KB Output is correct
7 Correct 4 ms 16984 KB Output is correct
8 Correct 4 ms 16988 KB Output is correct
9 Correct 4 ms 16988 KB Output is correct
10 Correct 3 ms 16988 KB Output is correct
11 Correct 4 ms 16988 KB Output is correct
12 Correct 3 ms 16988 KB Output is correct
13 Correct 3 ms 17008 KB Output is correct
14 Correct 4 ms 16988 KB Output is correct
15 Correct 4 ms 16988 KB Output is correct
16 Correct 3 ms 16988 KB Output is correct
17 Correct 5 ms 17008 KB Output is correct
18 Correct 4 ms 16984 KB Output is correct
19 Correct 4 ms 17032 KB Output is correct
20 Correct 3 ms 16988 KB Output is correct
21 Correct 4 ms 16988 KB Output is correct
22 Correct 4 ms 16988 KB Output is correct
23 Correct 4 ms 16988 KB Output is correct
24 Correct 4 ms 16988 KB Output is correct
25 Correct 4 ms 16988 KB Output is correct
26 Correct 4 ms 17004 KB Output is correct
27 Correct 4 ms 17020 KB Output is correct
28 Correct 5 ms 16988 KB Output is correct
29 Correct 3 ms 17240 KB Output is correct
30 Correct 3 ms 16988 KB Output is correct
31 Correct 4 ms 16988 KB Output is correct
32 Correct 5 ms 16988 KB Output is correct
33 Correct 4 ms 16988 KB Output is correct
34 Correct 7 ms 17244 KB Output is correct
35 Correct 67 ms 24668 KB Output is correct
36 Correct 101 ms 34644 KB Output is correct
37 Correct 107 ms 34848 KB Output is correct
38 Correct 97 ms 34556 KB Output is correct
39 Correct 4 ms 16988 KB Output is correct
40 Correct 5 ms 17244 KB Output is correct
41 Correct 6 ms 17300 KB Output is correct
42 Correct 5 ms 16988 KB Output is correct
43 Correct 35 ms 17244 KB Output is correct
44 Correct 39 ms 17244 KB Output is correct
45 Correct 4 ms 16988 KB Output is correct
46 Correct 5 ms 16988 KB Output is correct
47 Correct 7 ms 17344 KB Output is correct
48 Correct 7 ms 17244 KB Output is correct
49 Correct 28 ms 24500 KB Output is correct
50 Correct 107 ms 34560 KB Output is correct
51 Correct 34 ms 17500 KB Output is correct
52 Correct 90 ms 33360 KB Output is correct
53 Correct 26 ms 25688 KB Output is correct
54 Correct 100 ms 34132 KB Output is correct
55 Correct 36 ms 30292 KB Output is correct
56 Correct 30 ms 30556 KB Output is correct
57 Correct 25 ms 29008 KB Output is correct
58 Correct 27 ms 29696 KB Output is correct
59 Correct 5 ms 17244 KB Output is correct
60 Correct 55 ms 19540 KB Output is correct
61 Correct 11 ms 17244 KB Output is correct
62 Correct 96 ms 34172 KB Output is correct
63 Correct 404 ms 69756 KB Output is correct
64 Correct 430 ms 69716 KB Output is correct
65 Correct 394 ms 69616 KB Output is correct
66 Correct 107 ms 23800 KB Output is correct
67 Correct 207 ms 34716 KB Output is correct
68 Correct 86 ms 23696 KB Output is correct
69 Correct 4411 ms 31328 KB Output is correct
70 Correct 88 ms 23736 KB Output is correct
71 Correct 101 ms 23688 KB Output is correct
72 Correct 816 ms 32272 KB Output is correct
73 Correct 728 ms 32716 KB Output is correct
74 Correct 1038 ms 140228 KB Output is correct
75 Incorrect 4563 ms 37872 KB Output isn't correct
76 Halted 0 ms 0 KB -