oj.uz

Submission #953229

# Submission time Handle Problem Language Result Execution time Memory
953229 2024-03-25T17:45:00 Z andrei_boaca Making Friends on Joitter is Fun (JOI20_joitter2) C++17
17 / 100
 5000 ms 69756 KB 
#include <bits/stdc++.h>
#pragma GCC optimize ("Ofast")
#pragma GCC optimize ("fast-math")
#pragma GCC optimize ("unroll-loops")
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();
    ll lg=0;
    for(ll t:par[c1])
    {
        ll i=comp[t];
        lg++;
        if(lg>1500)
            break;
        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 16984 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 3 ms 16988 KB Output is correct
6 Correct 4 ms 16984 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 3 ms 16988 KB Output is correct
11 Correct 3 ms 16988 KB Output is correct
12 Correct 5 ms 16988 KB Output is correct
13 Correct 3 ms 16988 KB Output is correct
14 Correct 4 ms 16984 KB Output is correct
15 Correct 4 ms 16988 KB Output is correct
16 Correct 5 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 4 ms 16988 KB Output is correct
21 Correct 4 ms 16984 KB Output is correct
22 Correct 4 ms 16988 KB Output is correct
23 Correct 5 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 16984 KB Output is correct
27 Correct 4 ms 16984 KB Output is correct
28 Correct 3 ms 16988 KB Output is correct
29 Correct 4 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 16824 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 16984 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 3 ms 16988 KB Output is correct
6 Correct 4 ms 16984 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 3 ms 16988 KB Output is correct
11 Correct 3 ms 16988 KB Output is correct
12 Correct 5 ms 16988 KB Output is correct
13 Correct 3 ms 16988 KB Output is correct
14 Correct 4 ms 16984 KB Output is correct
15 Correct 4 ms 16988 KB Output is correct
16 Correct 5 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 4 ms 16988 KB Output is correct
21 Correct 4 ms 16984 KB Output is correct
22 Correct 4 ms 16988 KB Output is correct
23 Correct 5 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 16984 KB Output is correct
27 Correct 4 ms 16984 KB Output is correct
28 Correct 3 ms 16988 KB Output is correct
29 Correct 4 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 16824 KB Output is correct
33 Correct 4 ms 16988 KB Output is correct
34 Correct 6 ms 16984 KB Output is correct
35 Correct 58 ms 20564 KB Output is correct
36 Correct 79 ms 23352 KB Output is correct
37 Correct 81 ms 23460 KB Output is correct
38 Correct 77 ms 23124 KB Output is correct
39 Correct 5 ms 16984 KB Output is correct
40 Correct 6 ms 17244 KB Output is correct
41 Correct 6 ms 17360 KB Output is correct
42 Correct 5 ms 16988 KB Output is correct
43 Correct 17 ms 17244 KB Output is correct
44 Correct 17 ms 17288 KB Output is correct
45 Correct 5 ms 16984 KB Output is correct
46 Correct 5 ms 16984 KB Output is correct
47 Correct 7 ms 17244 KB Output is correct
48 Correct 6 ms 17344 KB Output is correct
49 Correct 12 ms 18112 KB Output is correct
50 Correct 87 ms 23636 KB Output is correct
51 Correct 19 ms 17752 KB Output is correct
52 Correct 77 ms 21872 KB Output is correct
53 Correct 13 ms 18012 KB Output is correct
54 Correct 74 ms 22780 KB Output is correct
55 Correct 13 ms 18008 KB Output is correct
56 Correct 13 ms 18012 KB Output is correct
57 Correct 13 ms 18012 KB Output is correct
58 Correct 14 ms 18012 KB Output is correct
59 Correct 5 ms 17244 KB Output is correct
60 Correct 56 ms 19408 KB Output is correct
61 Correct 8 ms 17244 KB Output is correct
62 Correct 76 ms 22960 KB Output is correct

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 3 ms 16988 KB Output is correct
4 Correct 3 ms 16988 KB Output is correct
5 Correct 3 ms 16988 KB Output is correct
6 Correct 4 ms 16984 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 3 ms 16988 KB Output is correct
11 Correct 3 ms 16988 KB Output is correct
12 Correct 5 ms 16988 KB Output is correct
13 Correct 3 ms 16988 KB Output is correct
14 Correct 4 ms 16984 KB Output is correct
15 Correct 4 ms 16988 KB Output is correct
16 Correct 5 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 4 ms 16988 KB Output is correct
21 Correct 4 ms 16984 KB Output is correct
22 Correct 4 ms 16988 KB Output is correct
23 Correct 5 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 16984 KB Output is correct
27 Correct 4 ms 16984 KB Output is correct
28 Correct 3 ms 16988 KB Output is correct
29 Correct 4 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 16824 KB Output is correct
33 Correct 4 ms 16988 KB Output is correct
34 Correct 6 ms 16984 KB Output is correct
35 Correct 58 ms 20564 KB Output is correct
36 Correct 79 ms 23352 KB Output is correct
37 Correct 81 ms 23460 KB Output is correct
38 Correct 77 ms 23124 KB Output is correct
39 Correct 5 ms 16984 KB Output is correct
40 Correct 6 ms 17244 KB Output is correct
41 Correct 6 ms 17360 KB Output is correct
42 Correct 5 ms 16988 KB Output is correct
43 Correct 17 ms 17244 KB Output is correct
44 Correct 17 ms 17288 KB Output is correct
45 Correct 5 ms 16984 KB Output is correct
46 Correct 5 ms 16984 KB Output is correct
47 Correct 7 ms 17244 KB Output is correct
48 Correct 6 ms 17344 KB Output is correct
49 Correct 12 ms 18112 KB Output is correct
50 Correct 87 ms 23636 KB Output is correct
51 Correct 19 ms 17752 KB Output is correct
52 Correct 77 ms 21872 KB Output is correct
53 Correct 13 ms 18012 KB Output is correct
54 Correct 74 ms 22780 KB Output is correct
55 Correct 13 ms 18008 KB Output is correct
56 Correct 13 ms 18012 KB Output is correct
57 Correct 13 ms 18012 KB Output is correct
58 Correct 14 ms 18012 KB Output is correct
59 Correct 5 ms 17244 KB Output is correct
60 Correct 56 ms 19408 KB Output is correct
61 Correct 8 ms 17244 KB Output is correct
62 Correct 76 ms 22960 KB Output is correct
63 Correct 458 ms 69624 KB Output is correct
64 Correct 421 ms 69756 KB Output is correct
65 Correct 397 ms 69708 KB Output is correct
66 Correct 81 ms 23576 KB Output is correct
67 Correct 214 ms 34932 KB Output is correct
68 Correct 108 ms 23668 KB Output is correct
69 Execution timed out 5059 ms 30752 KB Time limit exceeded
70 Halted 0 ms 0 KB -