oj.uz

Submission #1100823

# Submission time Handle Problem Language Result Execution time Memory
1100823 2024-10-14T18:45:26 Z vivkostov Joker (BOI20_joker) C++14
14 / 100
 2000 ms 8660 KB 
#include<bits/stdc++.h>
#define endl '\n'
using namespace std;
void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}
struct cell
{
    int a,b,tim;
};
int n,m,q,a[200005],b[200005],l,r,lead[200005],sw[200005],sz[200005],lamp,otg[200005],br;
stack<cell>s;
void prec()
{
    for(int i=1;i<=n;i++)
    {
        lead[i]=i;
        sz[i]=1;
        sw[i]=0;
    }
}
int get_lead(int beg)
{
    if(lead[beg]==beg)return beg;
    return get_lead(lead[beg]);
}
int get_br(int beg,int br)
{
    if(lead[beg]==beg)return br;
    return get_br(lead[beg],br+sw[beg]);
}
void add(int a,int b)
{
    br++;
    int la=get_lead(a);
    int lb=get_lead(b);
    if(la==lb)
    {
        if(get_br(a,0)%2==get_br(b,0)%2)lamp=br;
        return;
    }
    if(sz[la]<sz[lb])
    {
        swap(la,lb);
        swap(a,b);
    }
    lead[lb]=la;
    sz[la]+=sz[lb];
    if(get_br(a,0)%2==get_br(b,0)%2)sw[lb]++;
    cell h;
    h.a=la;
    h.b=lb;
    h.tim=br;
    s.push(h);
}
void rem(int num)
{
    for(int i=1;i<=num;i++)
    {
        if(s.top().tim==br)
        {
            int a=s.top().a;
            int b=s.top().b;
            s.pop();
            sz[a]-=sz[b];
            lead[b]=b;
        }
        br--;
        if(br<lamp)lamp=0;
    }
}
void rec(int l1,int l2,int r1,int r2)
{
    if(l1>l2)return;
    int mid=(l1+l2)/2;
    int nbr=br;
    for(int i=l1;i<mid;i++)
    {
        add(a[i],b[i]);
    }
    //cout<<br<<endl;
    int x=r2;
    int obr=br;
    while(!lamp&&x>max(mid,r1))
    {
        x--;
        add(a[x],b[x]);
    }
    int ubr=br;
    otg[mid]=x;
    //cout<<l1<<" "<<l2<<" "<<r1<<" "<<r2<<" "<<otg[mid]<<endl;
    //cout<<nbr<<" "<<obr<<" "<<br<<" "<<mid<<endl;
    rem(ubr-obr);

    add(a[mid],b[mid]);

    rec(mid+1,l2,otg[mid],r2);

    rem(mid-l1+1);

    //cout<<l1<<" "<<l2<<" "<<br<<" "<<nbr<<" "<<obr<<" "<<ubr<<" "<<otg[mid]<<endl;

    for(int i=r2-1;i>=otg[mid];i--)
    {
        add(a[i],b[i]);
    }

    rec(l1,mid-1,r1,otg[mid]);

    rem(r2-otg[mid]);
}
void read()
{
    cin>>n>>m>>q;
    prec();
    for(int i=1;i<=m;i++)
    {
        cin>>a[i]>>b[i];
    }
    //rec(1,m,1,m+1);
    for(int i=1;i<=q;i++)
    {
        cin>>l>>r;
        for(int i=1;i<l;i++)
        {
            add(a[i],b[i]);
        }
        for(int i=r+1;i<=m;i++)
        {
            add(a[i],b[i]);
        }
        if(lamp)cout<<"YES"<<endl;
        else cout<<"NO"<<endl;
        rem(l-1);
        rem(m-r);
        //if(otg[l]>r)cout<<"YES"<<endl;
        //else cout<<"NO"<<endl;
    }
}
int main()
{
    speed();
    read();
    return 0;
}

Compilation message

Joker.cpp: In function 'void rec(int, int, int, int)':
Joker.cpp:79:9: warning: unused variable 'nbr' [-Wunused-variable]
   79 |     int nbr=br;
      |         ^~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4432 KB Output is correct
2 Correct 1 ms 4432 KB Output is correct
3 Correct 1 ms 4432 KB Output is correct
4 Correct 1 ms 4432 KB Output is correct
5 Correct 1 ms 4432 KB Output is correct
6 Correct 1 ms 4432 KB Output is correct
7 Correct 1 ms 4432 KB Output is correct
8 Correct 1 ms 4432 KB Output is correct
9 Correct 1 ms 4432 KB Output is correct
10 Correct 2 ms 4432 KB Output is correct
11 Correct 1 ms 4432 KB Output is correct
12 Correct 2 ms 4432 KB Output is correct
13 Correct 1 ms 4556 KB Output is correct
14 Correct 2 ms 4432 KB Output is correct
15 Correct 1 ms 4432 KB Output is correct
16 Correct 2 ms 4432 KB Output is correct
17 Correct 1 ms 4432 KB Output is correct
18 Correct 2 ms 4596 KB Output is correct
19 Correct 1 ms 4432 KB Output is correct
20 Correct 2 ms 4432 KB Output is correct
21 Correct 2 ms 4432 KB Output is correct
22 Correct 2 ms 4584 KB Output is correct
23 Correct 2 ms 4432 KB Output is correct
24 Correct 2 ms 4432 KB Output is correct
25 Correct 2 ms 4432 KB Output is correct
26 Correct 1 ms 4432 KB Output is correct
27 Correct 1 ms 4432 KB Output is correct
28 Correct 2 ms 4444 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4432 KB Output is correct
2 Correct 1 ms 4432 KB Output is correct
3 Correct 1 ms 4432 KB Output is correct
4 Correct 1 ms 4432 KB Output is correct
5 Correct 1 ms 4432 KB Output is correct
6 Correct 1 ms 4432 KB Output is correct
7 Correct 1 ms 4432 KB Output is correct
8 Correct 1 ms 4432 KB Output is correct
9 Correct 1 ms 4432 KB Output is correct
10 Correct 2 ms 4432 KB Output is correct
11 Correct 1 ms 4432 KB Output is correct
12 Correct 2 ms 4432 KB Output is correct
13 Correct 1 ms 4556 KB Output is correct
14 Correct 2 ms 4432 KB Output is correct
15 Correct 1 ms 4432 KB Output is correct
16 Correct 2 ms 4432 KB Output is correct
17 Correct 1 ms 4432 KB Output is correct
18 Correct 2 ms 4596 KB Output is correct
19 Correct 1 ms 4432 KB Output is correct
20 Correct 2 ms 4432 KB Output is correct
21 Correct 2 ms 4432 KB Output is correct
22 Correct 2 ms 4584 KB Output is correct
23 Correct 2 ms 4432 KB Output is correct
24 Correct 2 ms 4432 KB Output is correct
25 Correct 2 ms 4432 KB Output is correct
26 Correct 1 ms 4432 KB Output is correct
27 Correct 1 ms 4432 KB Output is correct
28 Correct 2 ms 4444 KB Output is correct
29 Correct 22 ms 4432 KB Output is correct
30 Correct 42 ms 4628 KB Output is correct
31 Correct 45 ms 4432 KB Output is correct
32 Correct 39 ms 4620 KB Output is correct
33 Correct 32 ms 4432 KB Output is correct
34 Correct 43 ms 4432 KB Output is correct
35 Correct 48 ms 4432 KB Output is correct
36 Correct 34 ms 4432 KB Output is correct
37 Correct 39 ms 4432 KB Output is correct
38 Correct 44 ms 4432 KB Output is correct
39 Correct 31 ms 4600 KB Output is correct
40 Correct 34 ms 4616 KB Output is correct
41 Correct 34 ms 4604 KB Output is correct
42 Correct 30 ms 4432 KB Output is correct
43 Correct 45 ms 4432 KB Output is correct
44 Correct 50 ms 4620 KB Output is correct
45 Correct 51 ms 4624 KB Output is correct
46 Correct 51 ms 4432 KB Output is correct
47 Correct 33 ms 4432 KB Output is correct
48 Correct 37 ms 4432 KB Output is correct
49 Correct 44 ms 4620 KB Output is correct
50 Correct 43 ms 4624 KB Output is correct
51 Correct 33 ms 4624 KB Output is correct
52 Correct 37 ms 4624 KB Output is correct
53 Correct 42 ms 4624 KB Output is correct
54 Correct 48 ms 4636 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4432 KB Output is correct
2 Correct 1 ms 4432 KB Output is correct
3 Execution timed out 2073 ms 6264 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4432 KB Output is correct
2 Correct 1 ms 4432 KB Output is correct
3 Correct 1 ms 4432 KB Output is correct
4 Correct 1 ms 4432 KB Output is correct
5 Correct 1 ms 4432 KB Output is correct
6 Correct 1 ms 4432 KB Output is correct
7 Correct 1 ms 4432 KB Output is correct
8 Correct 1 ms 4432 KB Output is correct
9 Correct 1 ms 4432 KB Output is correct
10 Correct 2 ms 4432 KB Output is correct
11 Correct 1 ms 4432 KB Output is correct
12 Correct 2 ms 4432 KB Output is correct
13 Correct 1 ms 4556 KB Output is correct
14 Correct 2 ms 4432 KB Output is correct
15 Correct 1 ms 4432 KB Output is correct
16 Correct 2 ms 4432 KB Output is correct
17 Correct 1 ms 4432 KB Output is correct
18 Correct 2 ms 4596 KB Output is correct
19 Correct 1 ms 4432 KB Output is correct
20 Correct 2 ms 4432 KB Output is correct
21 Correct 2 ms 4432 KB Output is correct
22 Correct 2 ms 4584 KB Output is correct
23 Correct 2 ms 4432 KB Output is correct
24 Correct 2 ms 4432 KB Output is correct
25 Correct 2 ms 4432 KB Output is correct
26 Correct 1 ms 4432 KB Output is correct
27 Correct 1 ms 4432 KB Output is correct
28 Correct 2 ms 4444 KB Output is correct
29 Execution timed out 2073 ms 6264 KB Time limit exceeded
30 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4432 KB Output is correct
2 Correct 1 ms 4432 KB Output is correct
3 Correct 1 ms 4432 KB Output is correct
4 Correct 1 ms 4432 KB Output is correct
5 Correct 1 ms 4432 KB Output is correct
6 Correct 1 ms 4432 KB Output is correct
7 Correct 1 ms 4432 KB Output is correct
8 Correct 1 ms 4432 KB Output is correct
9 Correct 1 ms 4432 KB Output is correct
10 Correct 2 ms 4432 KB Output is correct
11 Correct 1 ms 4432 KB Output is correct
12 Correct 2 ms 4432 KB Output is correct
13 Correct 1 ms 4556 KB Output is correct
14 Correct 2 ms 4432 KB Output is correct
15 Correct 1 ms 4432 KB Output is correct
16 Correct 2 ms 4432 KB Output is correct
17 Correct 1 ms 4432 KB Output is correct
18 Correct 2 ms 4596 KB Output is correct
19 Correct 1 ms 4432 KB Output is correct
20 Correct 2 ms 4432 KB Output is correct
21 Correct 2 ms 4432 KB Output is correct
22 Correct 2 ms 4584 KB Output is correct
23 Correct 2 ms 4432 KB Output is correct
24 Correct 2 ms 4432 KB Output is correct
25 Correct 2 ms 4432 KB Output is correct
26 Correct 1 ms 4432 KB Output is correct
27 Correct 1 ms 4432 KB Output is correct
28 Correct 2 ms 4444 KB Output is correct
29 Correct 22 ms 4432 KB Output is correct
30 Correct 42 ms 4628 KB Output is correct
31 Correct 45 ms 4432 KB Output is correct
32 Correct 39 ms 4620 KB Output is correct
33 Correct 32 ms 4432 KB Output is correct
34 Correct 43 ms 4432 KB Output is correct
35 Correct 48 ms 4432 KB Output is correct
36 Correct 34 ms 4432 KB Output is correct
37 Correct 39 ms 4432 KB Output is correct
38 Correct 44 ms 4432 KB Output is correct
39 Correct 31 ms 4600 KB Output is correct
40 Correct 34 ms 4616 KB Output is correct
41 Correct 34 ms 4604 KB Output is correct
42 Correct 30 ms 4432 KB Output is correct
43 Correct 45 ms 4432 KB Output is correct
44 Correct 50 ms 4620 KB Output is correct
45 Correct 51 ms 4624 KB Output is correct
46 Correct 51 ms 4432 KB Output is correct
47 Correct 33 ms 4432 KB Output is correct
48 Correct 37 ms 4432 KB Output is correct
49 Correct 44 ms 4620 KB Output is correct
50 Correct 43 ms 4624 KB Output is correct
51 Correct 33 ms 4624 KB Output is correct
52 Correct 37 ms 4624 KB Output is correct
53 Correct 42 ms 4624 KB Output is correct
54 Correct 48 ms 4636 KB Output is correct
55 Execution timed out 2047 ms 8660 KB Time limit exceeded
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4432 KB Output is correct
2 Correct 1 ms 4432 KB Output is correct
3 Correct 1 ms 4432 KB Output is correct
4 Correct 1 ms 4432 KB Output is correct
5 Correct 1 ms 4432 KB Output is correct
6 Correct 1 ms 4432 KB Output is correct
7 Correct 1 ms 4432 KB Output is correct
8 Correct 1 ms 4432 KB Output is correct
9 Correct 1 ms 4432 KB Output is correct
10 Correct 2 ms 4432 KB Output is correct
11 Correct 1 ms 4432 KB Output is correct
12 Correct 2 ms 4432 KB Output is correct
13 Correct 1 ms 4556 KB Output is correct
14 Correct 2 ms 4432 KB Output is correct
15 Correct 1 ms 4432 KB Output is correct
16 Correct 2 ms 4432 KB Output is correct
17 Correct 1 ms 4432 KB Output is correct
18 Correct 2 ms 4596 KB Output is correct
19 Correct 1 ms 4432 KB Output is correct
20 Correct 2 ms 4432 KB Output is correct
21 Correct 2 ms 4432 KB Output is correct
22 Correct 2 ms 4584 KB Output is correct
23 Correct 2 ms 4432 KB Output is correct
24 Correct 2 ms 4432 KB Output is correct
25 Correct 2 ms 4432 KB Output is correct
26 Correct 1 ms 4432 KB Output is correct
27 Correct 1 ms 4432 KB Output is correct
28 Correct 2 ms 4444 KB Output is correct
29 Correct 22 ms 4432 KB Output is correct
30 Correct 42 ms 4628 KB Output is correct
31 Correct 45 ms 4432 KB Output is correct
32 Correct 39 ms 4620 KB Output is correct
33 Correct 32 ms 4432 KB Output is correct
34 Correct 43 ms 4432 KB Output is correct
35 Correct 48 ms 4432 KB Output is correct
36 Correct 34 ms 4432 KB Output is correct
37 Correct 39 ms 4432 KB Output is correct
38 Correct 44 ms 4432 KB Output is correct
39 Correct 31 ms 4600 KB Output is correct
40 Correct 34 ms 4616 KB Output is correct
41 Correct 34 ms 4604 KB Output is correct
42 Correct 30 ms 4432 KB Output is correct
43 Correct 45 ms 4432 KB Output is correct
44 Correct 50 ms 4620 KB Output is correct
45 Correct 51 ms 4624 KB Output is correct
46 Correct 51 ms 4432 KB Output is correct
47 Correct 33 ms 4432 KB Output is correct
48 Correct 37 ms 4432 KB Output is correct
49 Correct 44 ms 4620 KB Output is correct
50 Correct 43 ms 4624 KB Output is correct
51 Correct 33 ms 4624 KB Output is correct
52 Correct 37 ms 4624 KB Output is correct
53 Correct 42 ms 4624 KB Output is correct
54 Correct 48 ms 4636 KB Output is correct
55 Execution timed out 2073 ms 6264 KB Time limit exceeded
56 Halted 0 ms 0 KB -