oj.uz

Submission #879890

# Submission time Handle Problem Language Result Execution time Memory
879890 2023-11-28T09:17:10 Z vivkostov Jail (JOI22_jail) C++14
54 / 100
 963 ms 669920 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);
}
int q,n,m,c,d,a[2000005],b[2000005],child[2000005],machild[2000005],used[2000005],up[2000005],bin[2000005][60],level[2000005],usedl[2000005],in,brr,brj;
vector<int>v[2000005],p[2000005];
void find_child(int beg,int par,int lev)
{
    level[beg]=lev;
    child[beg]++;
    bin[beg][0]=par;
    int w=0;
    for(int i=0;i<v[beg].size();i++)
    {
        w=v[beg][i];
        if(!child[w])
        {
            find_child(w,beg,lev+1);
            child[beg]+=child[w];
            machild[beg]=max(machild[beg],child[w]);
        }
    }
}
void heavylight(int beg,int last)
{
    in++;
    up[beg]=last;
    used[beg]=in;
    int w,ma=0;
    for(int i=0;i<v[beg].size();i++)
    {
        w=v[beg][i];
        if(!used[w]&&child[w]==machild[beg])
        {
            heavylight(w,last);
            break;
        }
    }
    for(int i=0;i<v[beg].size();i++)
    {
        w=v[beg][i];
        if(!used[w])heavylight(w,w);
    }
}
void make_start(int l,int r,int h)
{
    if(l==r)return;
    int mid=(l+r)/2;
    p[h+n].push_back(h*2+n);
    p[h+n].push_back(h*2+1+n);
    make_start(l,mid,h*2);
    make_start(mid+1,r,h*2+1);
}
void make_finish(int l,int r,int h)
{
    if(l==r)return;
    int mid=(l+r)/2;
    p[h*2+n*5].push_back(h+n*5);
    p[h*2+1+n*5].push_back(h+n*5);
    make_finish(l,mid,h*2);
    make_finish(mid+1,r,h*2+1);
}
void update(int l,int r,int ql,int qr,int h,int to,int type)
{
    if(l>qr||r<ql)return;
    if(l>=ql&&r<=qr)
    {
        if(type==1)p[h+n].push_back(to);
        if(type==2)p[to].push_back(h+n*5);
        if(type==3)p[to].push_back(h+n);
        if(type==4)p[h+n*5].push_back(to);
        return;
    }
    int mid=(l+r)/2;
    update(l,mid,ql,qr,h*2,to,type);
    update(mid+1,r,ql,qr,h*2+1,to,type);
}
void make_bin()
{
    for(int j=1;j<=30;j++)
    {
        for(int i=1;i<=n;i++)
        {
            bin[i][j]=bin[bin[i][j-1]][j-1];
        }
    }
}
void add_all()
{
    for(int i=1;i<=m;i++)
    {
        update(1,n,used[a[i]],used[a[i]],1,i,1);
        update(1,n,used[b[i]],used[b[i]],1,i,2);
    }
}
int lca(int x,int y)
{
    if(level[x]>level[y])swap(x,y);
    for(int i=30;i>=0;i--)
    {
        if(level[bin[y][i]]>=level[x])y=bin[y][i];
    }
    if(x==y)return x;
    for(int i=30;i>=0;i--)
    {
        if(bin[x][i]!=bin[y][i])
        {
            x=bin[x][i];
            y=bin[y][i];
        }
    }
    return bin[x][0];
}
void go_up_heavy(int beg,int lc,int prisoner)
{
    if(level[up[beg]]==level[lc])
    {
        update(1,n,used[up[beg]],used[beg],1,prisoner,3);
        update(1,n,used[up[beg]],used[beg],1,prisoner,4);
        return;
    }
    if(level[up[beg]]>level[lc])
    {
        update(1,n,used[up[beg]],used[beg],1,prisoner,3);
        update(1,n,used[up[beg]],used[beg],1,prisoner,4);
        go_up_heavy(bin[up[beg]][0],lc,prisoner);
        return;
    }
    update(1,n,used[lc],used[beg],1,prisoner,3);
    update(1,n,used[lc],used[beg],1,prisoner,4);
}
void add_path()
{
    for(int i=1;i<=m;i++)
    {
        int g=lca(a[i],b[i]);
        go_up_heavy(a[i],g,i);
        go_up_heavy(b[i],g,i);
    }
}
int tin[2000005],low[2000005],tim,lamp,comp[2000005],co;
stack<int>s;
void conect(int beg,int par)
{
    tim++;
    tin[beg]=tim;
    low[beg]=tim;
    s.push(beg);
    int w;
    for(int i=0;i<p[beg].size();i++)
    {
        w=p[beg][i];
        if(tin[w]==-1)continue;
        if(!tin[w])
        {
            conect(w,beg);
            low[beg]=min(low[beg],low[w]);
        }
        if(par!=w)low[beg]=min(low[beg],low[w]);
    }
    if(low[beg]==tin[beg])
    {
        co++;
        while(s.top()!=beg)
        {
            //cout<<s.top()<<" ";
            tin[s.top()]=-1;
            comp[s.top()]=co;
            s.pop();
        }
        //cout<<s.top()<<" ";
        tin[s.top()]=-1;
        comp[s.top()]=co;
        s.pop();
        //cout<<endl;
    }
}
void fill_cycle(int beg)
{
    if(beg<=m)brj++;
    usedl[beg]=2;
    int w;
    for(int i=0; i<p[beg].size(); i++)
    {
        w=p[beg][i];
        if(usedl[w]==1)fill_cycle(w);
    }
}
void find_cycle(int beg)
{
    usedl[beg]=1;
    int w;
    for(int i=0; i<p[beg].size(); i++)
    {
        w=p[beg][i];
        if(!usedl[w])find_cycle(w);
    }
    if(usedl[beg]!=2&&beg<=m)
    {
        fill_cycle(beg);
        if(brj>=2)brr=1;
        brj=0;
    }
}
void resh()
{
    find_child(1,0,1);
    heavylight(1,1);
    make_start(1,n,1);
    make_finish(1,n,1);
    add_all();
    make_bin();
    add_path();
    for(int i=1;i<=n*10;i++)
    {
        if(!usedl[i])find_cycle(i);
    }
    /*for(int i=1;i<=48;i++)
    {
        cout<<i<<" | ";
        for(int j=0;j<p[i].size();j++)
        {
            cout<<p[i][j]<<" ";
        }
        cout<<endl;
    }
    */
    if(brr)cout<<"No"<<endl;
    else cout<<"Yes"<<endl;
    for(int i=0;i<=n*15;i++)
    {
        a[i]=0;
        b[i]=0;
        child[i]=0;
        machild[i]=0;
        used[i]=0;
        up[i]=0;
        level[i]=0;
        usedl[i]=0;
        tin[i]=0;
        low[i]=0;
        comp[i]=0;
        v[i].clear();
        for(int j=0;j<=30;j++)bin[i][j]=0;
    }
    for(int i=0;i<=15*n;i++)p[i].clear();
    while(!s.empty())s.pop();
    in=0;
    brr=0;
    brj=0;
    lamp=0;
    tim=0;
    co=0;
}
void read()
{
    cin>>q;
    for(int z=1;z<=q;z++)
    {
        cin>>n;
        for(int i=1;i<n;i++)
        {
            cin>>c>>d;
            v[c].push_back(d);
            v[d].push_back(c);
        }
        cin>>m;
        for(int i=1;i<=m;i++)
        {
            cin>>a[i]>>b[i];
        }
        resh();
    }
}
int main()
{
    speed();
    read();
    return 0;
}

Compilation message

jail.cpp: In function 'void find_child(int, int, int)':
jail.cpp:18:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |     for(int i=0;i<v[beg].size();i++)
      |                 ~^~~~~~~~~~~~~~
jail.cpp: In function 'void heavylight(int, int)':
jail.cpp:35:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |     for(int i=0;i<v[beg].size();i++)
      |                 ~^~~~~~~~~~~~~~
jail.cpp:44:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |     for(int i=0;i<v[beg].size();i++)
      |                 ~^~~~~~~~~~~~~~
jail.cpp:34:11: warning: unused variable 'ma' [-Wunused-variable]
   34 |     int w,ma=0;
      |           ^~
jail.cpp: In function 'void conect(int, int)':
jail.cpp:155:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  155 |     for(int i=0;i<p[beg].size();i++)
      |                 ~^~~~~~~~~~~~~~
jail.cpp: In function 'void fill_cycle(int)':
jail.cpp:188:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  188 |     for(int i=0; i<p[beg].size(); i++)
      |                  ~^~~~~~~~~~~~~~
jail.cpp: In function 'void find_cycle(int)':
jail.cpp:198:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  198 |     for(int i=0; i<p[beg].size(); i++)
      |                  ~^~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 115288 KB Output is correct
2 Correct 23 ms 115288 KB Output is correct
3 Correct 22 ms 115256 KB Output is correct
4 Correct 53 ms 115396 KB Output is correct
5 Correct 73 ms 115408 KB Output is correct
6 Correct 25 ms 117312 KB Output is correct
7 Correct 25 ms 117340 KB Output is correct
8 Correct 28 ms 117320 KB Output is correct
9 Correct 125 ms 146088 KB Output is correct
10 Correct 203 ms 628052 KB Output is correct
11 Correct 36 ms 115288 KB Output is correct
12 Correct 114 ms 115288 KB Output is correct
13 Correct 294 ms 635060 KB Output is correct
14 Correct 277 ms 635472 KB Output is correct
15 Correct 530 ms 642332 KB Output is correct
16 Correct 963 ms 669920 KB Output is correct
17 Correct 345 ms 642132 KB Output is correct
18 Correct 363 ms 644520 KB Output is correct
19 Correct 336 ms 640128 KB Output is correct
20 Correct 329 ms 640180 KB Output is correct
21 Correct 359 ms 642256 KB Output is correct
22 Correct 283 ms 631804 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 115288 KB Output is correct
2 Correct 22 ms 115292 KB Output is correct
3 Correct 25 ms 117340 KB Output is correct
4 Correct 24 ms 117340 KB Output is correct
5 Correct 25 ms 117340 KB Output is correct
6 Correct 25 ms 117340 KB Output is correct
7 Correct 25 ms 117540 KB Output is correct
8 Correct 26 ms 117592 KB Output is correct
9 Correct 25 ms 117256 KB Output is correct
10 Correct 26 ms 117440 KB Output is correct
11 Correct 24 ms 117340 KB Output is correct
12 Correct 24 ms 117340 KB Output is correct
13 Correct 24 ms 117432 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 115288 KB Output is correct
2 Correct 22 ms 115292 KB Output is correct
3 Correct 25 ms 117340 KB Output is correct
4 Correct 24 ms 117340 KB Output is correct
5 Correct 25 ms 117340 KB Output is correct
6 Correct 25 ms 117340 KB Output is correct
7 Correct 25 ms 117540 KB Output is correct
8 Correct 26 ms 117592 KB Output is correct
9 Correct 25 ms 117256 KB Output is correct
10 Correct 26 ms 117440 KB Output is correct
11 Correct 24 ms 117340 KB Output is correct
12 Correct 24 ms 117340 KB Output is correct
13 Correct 24 ms 117432 KB Output is correct
14 Correct 22 ms 115288 KB Output is correct
15 Correct 23 ms 115288 KB Output is correct
16 Correct 28 ms 117300 KB Output is correct
17 Correct 25 ms 117340 KB Output is correct
18 Correct 25 ms 117340 KB Output is correct
19 Correct 23 ms 115292 KB Output is correct
20 Correct 25 ms 117340 KB Output is correct
21 Correct 26 ms 117336 KB Output is correct
22 Correct 25 ms 117340 KB Output is correct
23 Correct 23 ms 115292 KB Output is correct
24 Correct 23 ms 115292 KB Output is correct
25 Correct 25 ms 117340 KB Output is correct
26 Correct 23 ms 117504 KB Output is correct
27 Correct 25 ms 117340 KB Output is correct
28 Correct 23 ms 115292 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 115288 KB Output is correct
2 Correct 22 ms 115292 KB Output is correct
3 Correct 25 ms 117340 KB Output is correct
4 Correct 24 ms 117340 KB Output is correct
5 Correct 25 ms 117340 KB Output is correct
6 Correct 25 ms 117340 KB Output is correct
7 Correct 25 ms 117540 KB Output is correct
8 Correct 26 ms 117592 KB Output is correct
9 Correct 25 ms 117256 KB Output is correct
10 Correct 26 ms 117440 KB Output is correct
11 Correct 24 ms 117340 KB Output is correct
12 Correct 24 ms 117340 KB Output is correct
13 Correct 24 ms 117432 KB Output is correct
14 Correct 22 ms 115288 KB Output is correct
15 Correct 23 ms 115288 KB Output is correct
16 Correct 28 ms 117300 KB Output is correct
17 Correct 25 ms 117340 KB Output is correct
18 Correct 25 ms 117340 KB Output is correct
19 Correct 23 ms 115292 KB Output is correct
20 Correct 25 ms 117340 KB Output is correct
21 Correct 26 ms 117336 KB Output is correct
22 Correct 25 ms 117340 KB Output is correct
23 Correct 23 ms 115292 KB Output is correct
24 Correct 23 ms 115292 KB Output is correct
25 Correct 25 ms 117340 KB Output is correct
26 Correct 23 ms 117504 KB Output is correct
27 Correct 25 ms 117340 KB Output is correct
28 Correct 23 ms 115292 KB Output is correct
29 Correct 29 ms 117340 KB Output is correct
30 Correct 27 ms 117340 KB Output is correct
31 Correct 27 ms 117340 KB Output is correct
32 Correct 27 ms 117332 KB Output is correct
33 Correct 25 ms 117340 KB Output is correct
34 Correct 28 ms 117340 KB Output is correct
35 Correct 27 ms 117340 KB Output is correct
36 Correct 27 ms 117464 KB Output is correct
37 Correct 25 ms 117336 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 115288 KB Output is correct
2 Correct 22 ms 115292 KB Output is correct
3 Correct 25 ms 117340 KB Output is correct
4 Correct 24 ms 117340 KB Output is correct
5 Correct 25 ms 117340 KB Output is correct
6 Correct 25 ms 117340 KB Output is correct
7 Correct 25 ms 117540 KB Output is correct
8 Correct 26 ms 117592 KB Output is correct
9 Correct 25 ms 117256 KB Output is correct
10 Correct 26 ms 117440 KB Output is correct
11 Correct 24 ms 117340 KB Output is correct
12 Correct 24 ms 117340 KB Output is correct
13 Correct 24 ms 117432 KB Output is correct
14 Correct 22 ms 115288 KB Output is correct
15 Correct 23 ms 115288 KB Output is correct
16 Correct 28 ms 117300 KB Output is correct
17 Correct 25 ms 117340 KB Output is correct
18 Correct 25 ms 117340 KB Output is correct
19 Correct 23 ms 115292 KB Output is correct
20 Correct 25 ms 117340 KB Output is correct
21 Correct 26 ms 117336 KB Output is correct
22 Correct 25 ms 117340 KB Output is correct
23 Correct 23 ms 115292 KB Output is correct
24 Correct 23 ms 115292 KB Output is correct
25 Correct 25 ms 117340 KB Output is correct
26 Correct 23 ms 117504 KB Output is correct
27 Correct 25 ms 117340 KB Output is correct
28 Correct 23 ms 115292 KB Output is correct
29 Correct 29 ms 117340 KB Output is correct
30 Correct 27 ms 117340 KB Output is correct
31 Correct 27 ms 117340 KB Output is correct
32 Correct 27 ms 117332 KB Output is correct
33 Correct 25 ms 117340 KB Output is correct
34 Correct 28 ms 117340 KB Output is correct
35 Correct 27 ms 117340 KB Output is correct
36 Correct 27 ms 117464 KB Output is correct
37 Correct 25 ms 117336 KB Output is correct
38 Correct 137 ms 145872 KB Output is correct
39 Correct 174 ms 628056 KB Output is correct
40 Correct 142 ms 145828 KB Output is correct
41 Correct 149 ms 145740 KB Output is correct
42 Correct 124 ms 146060 KB Output is correct
43 Incorrect 104 ms 145500 KB Output isn't correct
44 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 115288 KB Output is correct
2 Correct 22 ms 115292 KB Output is correct
3 Correct 25 ms 115288 KB Output is correct
4 Correct 26 ms 115304 KB Output is correct
5 Correct 36 ms 115296 KB Output is correct
6 Correct 24 ms 117296 KB Output is correct
7 Correct 24 ms 117340 KB Output is correct
8 Correct 22 ms 115288 KB Output is correct
9 Correct 26 ms 115300 KB Output is correct
10 Correct 23 ms 115288 KB Output is correct
11 Correct 23 ms 115392 KB Output is correct
12 Correct 27 ms 117460 KB Output is correct
13 Incorrect 85 ms 115288 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 115288 KB Output is correct
2 Correct 23 ms 115288 KB Output is correct
3 Correct 22 ms 115256 KB Output is correct
4 Correct 53 ms 115396 KB Output is correct
5 Correct 73 ms 115408 KB Output is correct
6 Correct 25 ms 117312 KB Output is correct
7 Correct 25 ms 117340 KB Output is correct
8 Correct 28 ms 117320 KB Output is correct
9 Correct 125 ms 146088 KB Output is correct
10 Correct 203 ms 628052 KB Output is correct
11 Correct 36 ms 115288 KB Output is correct
12 Correct 114 ms 115288 KB Output is correct
13 Correct 294 ms 635060 KB Output is correct
14 Correct 277 ms 635472 KB Output is correct
15 Correct 530 ms 642332 KB Output is correct
16 Correct 963 ms 669920 KB Output is correct
17 Correct 345 ms 642132 KB Output is correct
18 Correct 363 ms 644520 KB Output is correct
19 Correct 336 ms 640128 KB Output is correct
20 Correct 329 ms 640180 KB Output is correct
21 Correct 359 ms 642256 KB Output is correct
22 Correct 283 ms 631804 KB Output is correct
23 Correct 22 ms 115288 KB Output is correct
24 Correct 22 ms 115292 KB Output is correct
25 Correct 25 ms 117340 KB Output is correct
26 Correct 24 ms 117340 KB Output is correct
27 Correct 25 ms 117340 KB Output is correct
28 Correct 25 ms 117340 KB Output is correct
29 Correct 25 ms 117540 KB Output is correct
30 Correct 26 ms 117592 KB Output is correct
31 Correct 25 ms 117256 KB Output is correct
32 Correct 26 ms 117440 KB Output is correct
33 Correct 24 ms 117340 KB Output is correct
34 Correct 24 ms 117340 KB Output is correct
35 Correct 24 ms 117432 KB Output is correct
36 Correct 22 ms 115288 KB Output is correct
37 Correct 23 ms 115288 KB Output is correct
38 Correct 28 ms 117300 KB Output is correct
39 Correct 25 ms 117340 KB Output is correct
40 Correct 25 ms 117340 KB Output is correct
41 Correct 23 ms 115292 KB Output is correct
42 Correct 25 ms 117340 KB Output is correct
43 Correct 26 ms 117336 KB Output is correct
44 Correct 25 ms 117340 KB Output is correct
45 Correct 23 ms 115292 KB Output is correct
46 Correct 23 ms 115292 KB Output is correct
47 Correct 25 ms 117340 KB Output is correct
48 Correct 23 ms 117504 KB Output is correct
49 Correct 25 ms 117340 KB Output is correct
50 Correct 23 ms 115292 KB Output is correct
51 Correct 29 ms 117340 KB Output is correct
52 Correct 27 ms 117340 KB Output is correct
53 Correct 27 ms 117340 KB Output is correct
54 Correct 27 ms 117332 KB Output is correct
55 Correct 25 ms 117340 KB Output is correct
56 Correct 28 ms 117340 KB Output is correct
57 Correct 27 ms 117340 KB Output is correct
58 Correct 27 ms 117464 KB Output is correct
59 Correct 25 ms 117336 KB Output is correct
60 Correct 137 ms 145872 KB Output is correct
61 Correct 174 ms 628056 KB Output is correct
62 Correct 142 ms 145828 KB Output is correct
63 Correct 149 ms 145740 KB Output is correct
64 Correct 124 ms 146060 KB Output is correct
65 Incorrect 104 ms 145500 KB Output isn't correct
66 Halted 0 ms 0 KB -