oj.uz

Submission #313143

# Submission time Handle Problem Language Result Execution time Memory
313143 2020-10-15T09:10:52 Z vipghn2003 Making Friends on Joitter is Fun (JOI20_joitter2) C++14
100 / 100
 737 ms 40884 KB 
#include<bits/stdc++.h>
#define pii pair<int,int>
#define mp make_pair
#define fi first
#define se second
using namespace std;

const int N=1e5+5;
int n,m,p[N],sz[N];
set<int>in[N];
set<pii>out[N];
long long res;

int Find(int x)
{
    if(x==p[x]) return x;
    return p[x]=Find(p[x]);
}

void Union(int u, int v)
{
    int x=Find(u);
    int y=Find(v);
    if(x==y) return;
    auto it=out[y].lower_bound(mp(x,0));
    if(it!=out[y].end()&&(*it).fi==x)
    {
        if(in[x].size()+out[x].size()<in[y].size()+out[y].size()) swap(x,y);
        vector<pii>vo;
        for(auto&i:out[y])
        {
            res-=sz[i.fi];
            in[i.fi].erase(i.se);
            if(i.fi!=x) vo.push_back(i);
        }
        out[y].clear();
        res+=1ll*sz[y]*(2*sz[x]+in[x].size()-in[y].size());
        vector<int>vi;
        for(auto&i:in[y])
        {
            int j=Find(i);
            out[j].erase(mp(y,i));
            if(j!=x) vi.push_back(i);
        }
        in[y].clear();
        p[y]=x;
        sz[x]+=sz[y];
        for(auto&i:vi) Union(i,x);
        for(auto&i:vo) Union(i.se,i.fi);
    }
    else if(!in[y].count(u))
    {
        res+=sz[y];
        in[y].insert(u);
        out[x].insert(mp(y,u));
    }
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cin>>n>>m;
    for(int i=1;i<=n;i++)
    {
        p[i]=i;
        sz[i]=1;
    }
    while(m--)
    {
        int u,v;
        cin>>u>>v;
        Union(u,v);
        cout<<res<<'\n';
    }
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9728 KB Output is correct
2 Correct 7 ms 9728 KB Output is correct
3 Correct 7 ms 9728 KB Output is correct
4 Correct 7 ms 9728 KB Output is correct
5 Correct 7 ms 9728 KB Output is correct
6 Correct 7 ms 9728 KB Output is correct
7 Correct 8 ms 9728 KB Output is correct
8 Correct 8 ms 9728 KB Output is correct
9 Correct 8 ms 9856 KB Output is correct
10 Correct 7 ms 9728 KB Output is correct
11 Correct 7 ms 9728 KB Output is correct
12 Correct 8 ms 9728 KB Output is correct
13 Correct 7 ms 9728 KB Output is correct
14 Correct 7 ms 9728 KB Output is correct
15 Correct 7 ms 9728 KB Output is correct
16 Correct 8 ms 9856 KB Output is correct
17 Correct 7 ms 9728 KB Output is correct
18 Correct 7 ms 9728 KB Output is correct
19 Correct 7 ms 9728 KB Output is correct
20 Correct 7 ms 9728 KB Output is correct
21 Correct 7 ms 9728 KB Output is correct
22 Correct 7 ms 9728 KB Output is correct
23 Correct 7 ms 9812 KB Output is correct
24 Correct 7 ms 9728 KB Output is correct
25 Correct 7 ms 9728 KB Output is correct
26 Correct 7 ms 9728 KB Output is correct
27 Correct 7 ms 9728 KB Output is correct
28 Correct 7 ms 9728 KB Output is correct
29 Correct 7 ms 9728 KB Output is correct
30 Correct 7 ms 9728 KB Output is correct
31 Correct 7 ms 9728 KB Output is correct
32 Correct 7 ms 9728 KB Output is correct
33 Correct 8 ms 9728 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9728 KB Output is correct
2 Correct 7 ms 9728 KB Output is correct
3 Correct 7 ms 9728 KB Output is correct
4 Correct 7 ms 9728 KB Output is correct
5 Correct 7 ms 9728 KB Output is correct
6 Correct 7 ms 9728 KB Output is correct
7 Correct 8 ms 9728 KB Output is correct
8 Correct 8 ms 9728 KB Output is correct
9 Correct 8 ms 9856 KB Output is correct
10 Correct 7 ms 9728 KB Output is correct
11 Correct 7 ms 9728 KB Output is correct
12 Correct 8 ms 9728 KB Output is correct
13 Correct 7 ms 9728 KB Output is correct
14 Correct 7 ms 9728 KB Output is correct
15 Correct 7 ms 9728 KB Output is correct
16 Correct 8 ms 9856 KB Output is correct
17 Correct 7 ms 9728 KB Output is correct
18 Correct 7 ms 9728 KB Output is correct
19 Correct 7 ms 9728 KB Output is correct
20 Correct 7 ms 9728 KB Output is correct
21 Correct 7 ms 9728 KB Output is correct
22 Correct 7 ms 9728 KB Output is correct
23 Correct 7 ms 9812 KB Output is correct
24 Correct 7 ms 9728 KB Output is correct
25 Correct 7 ms 9728 KB Output is correct
26 Correct 7 ms 9728 KB Output is correct
27 Correct 7 ms 9728 KB Output is correct
28 Correct 7 ms 9728 KB Output is correct
29 Correct 7 ms 9728 KB Output is correct
30 Correct 7 ms 9728 KB Output is correct
31 Correct 7 ms 9728 KB Output is correct
32 Correct 7 ms 9728 KB Output is correct
33 Correct 8 ms 9728 KB Output is correct
34 Correct 9 ms 9856 KB Output is correct
35 Correct 88 ms 12792 KB Output is correct
36 Correct 108 ms 14712 KB Output is correct
37 Correct 108 ms 14712 KB Output is correct
38 Correct 104 ms 14456 KB Output is correct
39 Correct 8 ms 9728 KB Output is correct
40 Correct 9 ms 9856 KB Output is correct
41 Correct 9 ms 9856 KB Output is correct
42 Correct 8 ms 9728 KB Output is correct
43 Correct 10 ms 9856 KB Output is correct
44 Correct 11 ms 9856 KB Output is correct
45 Correct 8 ms 9728 KB Output is correct
46 Correct 9 ms 9728 KB Output is correct
47 Correct 9 ms 9856 KB Output is correct
48 Correct 9 ms 9856 KB Output is correct
49 Correct 15 ms 10368 KB Output is correct
50 Correct 109 ms 14800 KB Output is correct
51 Correct 14 ms 10112 KB Output is correct
52 Correct 99 ms 13688 KB Output is correct
53 Correct 15 ms 10368 KB Output is correct
54 Correct 103 ms 14328 KB Output is correct
55 Correct 12 ms 10112 KB Output is correct
56 Correct 11 ms 10112 KB Output is correct
57 Correct 11 ms 10112 KB Output is correct
58 Correct 12 ms 10240 KB Output is correct
59 Correct 10 ms 9728 KB Output is correct
60 Correct 93 ms 12280 KB Output is correct
61 Correct 10 ms 9856 KB Output is correct
62 Correct 104 ms 14312 KB Output is correct

Subtask #3
83.0 / 83.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9728 KB Output is correct
2 Correct 7 ms 9728 KB Output is correct
3 Correct 7 ms 9728 KB Output is correct
4 Correct 7 ms 9728 KB Output is correct
5 Correct 7 ms 9728 KB Output is correct
6 Correct 7 ms 9728 KB Output is correct
7 Correct 8 ms 9728 KB Output is correct
8 Correct 8 ms 9728 KB Output is correct
9 Correct 8 ms 9856 KB Output is correct
10 Correct 7 ms 9728 KB Output is correct
11 Correct 7 ms 9728 KB Output is correct
12 Correct 8 ms 9728 KB Output is correct
13 Correct 7 ms 9728 KB Output is correct
14 Correct 7 ms 9728 KB Output is correct
15 Correct 7 ms 9728 KB Output is correct
16 Correct 8 ms 9856 KB Output is correct
17 Correct 7 ms 9728 KB Output is correct
18 Correct 7 ms 9728 KB Output is correct
19 Correct 7 ms 9728 KB Output is correct
20 Correct 7 ms 9728 KB Output is correct
21 Correct 7 ms 9728 KB Output is correct
22 Correct 7 ms 9728 KB Output is correct
23 Correct 7 ms 9812 KB Output is correct
24 Correct 7 ms 9728 KB Output is correct
25 Correct 7 ms 9728 KB Output is correct
26 Correct 7 ms 9728 KB Output is correct
27 Correct 7 ms 9728 KB Output is correct
28 Correct 7 ms 9728 KB Output is correct
29 Correct 7 ms 9728 KB Output is correct
30 Correct 7 ms 9728 KB Output is correct
31 Correct 7 ms 9728 KB Output is correct
32 Correct 7 ms 9728 KB Output is correct
33 Correct 8 ms 9728 KB Output is correct
34 Correct 9 ms 9856 KB Output is correct
35 Correct 88 ms 12792 KB Output is correct
36 Correct 108 ms 14712 KB Output is correct
37 Correct 108 ms 14712 KB Output is correct
38 Correct 104 ms 14456 KB Output is correct
39 Correct 8 ms 9728 KB Output is correct
40 Correct 9 ms 9856 KB Output is correct
41 Correct 9 ms 9856 KB Output is correct
42 Correct 8 ms 9728 KB Output is correct
43 Correct 10 ms 9856 KB Output is correct
44 Correct 11 ms 9856 KB Output is correct
45 Correct 8 ms 9728 KB Output is correct
46 Correct 9 ms 9728 KB Output is correct
47 Correct 9 ms 9856 KB Output is correct
48 Correct 9 ms 9856 KB Output is correct
49 Correct 15 ms 10368 KB Output is correct
50 Correct 109 ms 14800 KB Output is correct
51 Correct 14 ms 10112 KB Output is correct
52 Correct 99 ms 13688 KB Output is correct
53 Correct 15 ms 10368 KB Output is correct
54 Correct 103 ms 14328 KB Output is correct
55 Correct 12 ms 10112 KB Output is correct
56 Correct 11 ms 10112 KB Output is correct
57 Correct 11 ms 10112 KB Output is correct
58 Correct 12 ms 10240 KB Output is correct
59 Correct 10 ms 9728 KB Output is correct
60 Correct 93 ms 12280 KB Output is correct
61 Correct 10 ms 9856 KB Output is correct
62 Correct 104 ms 14312 KB Output is correct
63 Correct 418 ms 40716 KB Output is correct
64 Correct 438 ms 40696 KB Output is correct
65 Correct 418 ms 40884 KB Output is correct
66 Correct 101 ms 12664 KB Output is correct
67 Correct 188 ms 16632 KB Output is correct
68 Correct 100 ms 14200 KB Output is correct
69 Correct 276 ms 19576 KB Output is correct
70 Correct 113 ms 14972 KB Output is correct
71 Correct 115 ms 15096 KB Output is correct
72 Correct 222 ms 19064 KB Output is correct
73 Correct 226 ms 19192 KB Output is correct
74 Correct 737 ms 28116 KB Output is correct
75 Correct 422 ms 24492 KB Output is correct
76 Correct 546 ms 27256 KB Output is correct
77 Correct 557 ms 27128 KB Output is correct
78 Correct 161 ms 18424 KB Output is correct
79 Correct 296 ms 22136 KB Output is correct
80 Correct 163 ms 18552 KB Output is correct
81 Correct 270 ms 21624 KB Output is correct
82 Correct 488 ms 32888 KB Output is correct
83 Correct 520 ms 33004 KB Output is correct
84 Correct 435 ms 33144 KB Output is correct
85 Correct 438 ms 33272 KB Output is correct
86 Correct 115 ms 14200 KB Output is correct
87 Correct 140 ms 16380 KB Output is correct
88 Correct 223 ms 19068 KB Output is correct
89 Correct 513 ms 26744 KB Output is correct