oj.uz

Submission #1115226

# Submission time Handle Problem Language Result Execution time Memory
1115226 2024-11-20T08:56:43 Z HoriaHaivas Inside information (BOI21_servers) C++14
100 / 100
 845 ms 56864 KB 
/*
    "care a facut teste cu Lattice reduction attack e ciudat"
    "linistiti va putin"
    - 2023 -
*/
#include<bits/stdc++.h>
#define debug(x) cerr << #x << " " << x << "\n"
#define debugs(x) cerr << #x << " " << x << " "
#pragma GCC optimize("Ofast")
#define int long long

using namespace std;

struct operatie
{
    char type;
    int u;
    int v;
    int moment;
    int ans;
};

struct idk
{
    int type;///0 - update, 1 - query
    int l;
    int r;
    int who;
};

bool cmp(idk a, idk b)
{
    if (a.l!=b.l)
        return a.l>b.l;
    else
        return a.type<b.type;
}

struct edge
{
    int to;
    int w;
};

vector<idk> events;
operatie q[240005];
vector<operatie> qq[120005];
map<int,pair<int,int>> cresc;
map<int,pair<int,int>> desc;
int aib[240005];
vector<edge> nodes[120005];
bool blocked[120005];
int sz[120005];
int maxx;

void update(int idx, int delta)
{
    while (idx<=maxx)
    {
        aib[idx]+=delta;
        idx+=idx&(-idx);
    }
}

int query(int idx)
{
    int ans;
    ans=0;
    while (idx>0)
    {
        ans+=aib[idx];
        idx-=idx&(-idx);
    }
    return ans;
}

void recalc(int node, int parent)
{
    sz[node]=1;
    for (auto x : nodes[node])
    {
        if (x.to!=parent && !blocked[x.to])
        {
            recalc(x.to,node);
            sz[node]+=sz[x.to];
        }
    }
}

int find_centroid(int node, int parent, int compsize)
{
    for (auto x : nodes[node])
    {
        if (x.to!=parent && !blocked[x.to] && sz[x.to]>compsize/2)
        {
            return find_centroid(x.to,node,compsize);
        }
    }
    return node;
}

bool canadd;

void add_cresc(int node, int parent, int first, int last)
{
    cresc[node]= {first,last};
    if (canadd)
        events.push_back({0,first,last,0});
    for (auto x : nodes[node])
    {
        if (x.to!=parent && !blocked[x.to] && x.w>last)
        {
            add_cresc(x.to,node,first,x.w);
        }
    }
}

void rem_cresc(int node, int parent, int first, int last)
{
    cresc[node]= {-1,-1};
    for (auto x : nodes[node])
    {
        if (x.to!=parent && !blocked[x.to] && x.w>last)
        {
            rem_cresc(x.to,node,first,x.w);
        }
    }
}

int globc;

void solve(int node, int parent, int first, int last)
{
    desc[node]={first,last};
    for (auto x : qq[node])
    {
        if (x.type=='Q')
        {
            if (x.u==x.v)
                q[x.moment].ans|=1;
            else if (x.u==globc && first<x.moment)
                q[x.moment].ans|=1;
            else if (cresc.find(x.u)==cresc.end() || (cresc[x.u].first==-1 && cresc[x.u].second==-1))
                q[x.moment].ans|=0;
            else if (cresc[x.u].first>first && cresc[x.u].second<x.moment)
                q[x.moment].ans|=1;
        }
        else
        {
            events.push_back({1,first+1,x.moment-1,x.moment});
        }
    }
    for (auto x : nodes[node])
    {
        if (x.to!=parent && !blocked[x.to] && x.w<last)
        {
            solve(x.to,node,first,x.w);
        }
    }
}

void cd(int node)
{
    int centroid;
    cresc.clear();
    desc.clear();
    events.clear();
    recalc(node,-1);
    centroid=find_centroid(node,-1,sz[node]);
    globc=centroid;
    blocked[centroid]=1;
    canadd=1;
    for (auto x : nodes[centroid])
    {
        if (!blocked[x.to])
        {
            add_cresc(x.to,centroid,x.w,x.w);
        }
    }
    for (auto x : qq[centroid])
    {
        if (x.type=='Q')
        {
            if (x.u==x.v)
                q[x.moment].ans|=1;
            else if (cresc.find(x.u)==cresc.end() || (cresc[x.u].first==-1 && cresc[x.u].second==-1))
                q[x.moment].ans|=0;
            else if (cresc[x.u].second<x.moment)
                q[x.moment].ans|=1;
        }
        else
        {
            events.push_back({1,1,x.moment-1,x.moment});
        }
    }
    canadd=0;
    for (auto x : nodes[centroid])
    {
        if (!blocked[x.to])
        {
            rem_cresc(x.to,centroid,x.w,x.w);
            solve(x.to,centroid,x.w,x.w);
            add_cresc(x.to,centroid,x.w,x.w);
        }
    }
    sort(events.begin(),events.end(),cmp);
    for (auto x : events)
    {
        if (x.type==0)
        {
            update(x.r,1);
        }
        else
        {
            if (desc.find(q[x.who].u)==desc.end())
                q[x.who].ans+=0;
            else if (desc[q[x.who].u].first<=x.r)
                q[x.who].ans+=1;
            q[x.who].ans+=query(x.r);
        }
    }
    for (auto x : events)
    {
        if (x.type==0)
        {
            update(x.r,-1);
        }
    }
    for (auto x : nodes[centroid])
    {
        if (!blocked[x.to])
        {
            cd(x.to);
        }
    }
}

signed main()
{
    /*
    ifstream fin("secvp.in");
    ofstream fout("secvp.out");
    */
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n,k,i,j;
    cin >> n >> k;
    for (i=1; i<=n+k-1; i++)
    {
        cin >> q[i].type;
        q[i].moment=i;
        if (q[i].type=='S')
        {
            cin >> q[i].u >> q[i].v;
            nodes[q[i].u].push_back({q[i].v,i});
            nodes[q[i].v].push_back({q[i].u,i});
        }
        if (q[i].type=='Q')
        {
            cin >> q[i].u >> q[i].v;
            qq[q[i].v].push_back(q[i]);
        }
        if (q[i].type=='C')
        {
            cin >> q[i].u;
            q[i].ans=1;
            qq[q[i].u].push_back(q[i]);
        }
    }
    maxx=n+k-1;
    cd(1);
    for (i=1; i<=n+k-1; i++)
    {
        if (q[i].type=='Q')
        {
            if (q[i].ans==1)
                cout << "yes\n";
            else
                cout << "no\n";
        }
        else if (q[i].type=='C')
        {
            cout << q[i].ans << "\n";
        }
    }
}

Compilation message

servers.cpp: In function 'int main()':
servers.cpp:247:15: warning: unused variable 'j' [-Wunused-variable]
  247 |     int n,k,i,j;
      |               ^

Subtask #1
2.5 / 2.5

# Verdict Execution time Memory Grader output
1 Correct 24 ms 21996 KB Output is correct
2 Correct 41 ms 23112 KB Output is correct
3 Correct 47 ms 22080 KB Output is correct
4 Correct 48 ms 23112 KB Output is correct
5 Correct 37 ms 24656 KB Output is correct
6 Correct 67 ms 24468 KB Output is correct

Subtask #2
2.5 / 2.5

# Verdict Execution time Memory Grader output
1 Correct 24 ms 21996 KB Output is correct
2 Correct 41 ms 23112 KB Output is correct
3 Correct 47 ms 22080 KB Output is correct
4 Correct 48 ms 23112 KB Output is correct
5 Correct 37 ms 24656 KB Output is correct
6 Correct 67 ms 24468 KB Output is correct
7 Correct 34 ms 22820 KB Output is correct
8 Correct 52 ms 24372 KB Output is correct
9 Correct 59 ms 23552 KB Output is correct
10 Correct 53 ms 24392 KB Output is correct
11 Correct 44 ms 24396 KB Output is correct
12 Correct 66 ms 25508 KB Output is correct

Subtask #3
2.5 / 2.5

# Verdict Execution time Memory Grader output
1 Correct 26 ms 21996 KB Output is correct
2 Correct 350 ms 52400 KB Output is correct
3 Correct 351 ms 49716 KB Output is correct

Subtask #4
2.5 / 2.5

# Verdict Execution time Memory Grader output
1 Correct 26 ms 21996 KB Output is correct
2 Correct 350 ms 52400 KB Output is correct
3 Correct 351 ms 49716 KB Output is correct
4 Correct 25 ms 22924 KB Output is correct
5 Correct 425 ms 53912 KB Output is correct
6 Correct 262 ms 54264 KB Output is correct
7 Correct 268 ms 52720 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 21996 KB Output is correct
2 Correct 214 ms 34412 KB Output is correct
3 Correct 192 ms 37236 KB Output is correct
4 Correct 424 ms 51200 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 21996 KB Output is correct
2 Correct 214 ms 34412 KB Output is correct
3 Correct 192 ms 37236 KB Output is correct
4 Correct 424 ms 51200 KB Output is correct
5 Correct 21 ms 22008 KB Output is correct
6 Correct 218 ms 37268 KB Output is correct
7 Correct 477 ms 55216 KB Output is correct
8 Correct 213 ms 36836 KB Output is correct
9 Correct 203 ms 36936 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 21996 KB Output is correct
2 Correct 405 ms 40888 KB Output is correct
3 Correct 202 ms 31816 KB Output is correct

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 21996 KB Output is correct
2 Correct 405 ms 40888 KB Output is correct
3 Correct 202 ms 31816 KB Output is correct
4 Correct 32 ms 22968 KB Output is correct
5 Correct 573 ms 45684 KB Output is correct
6 Correct 219 ms 34632 KB Output is correct

Subtask #9
12.5 / 12.5

# Verdict Execution time Memory Grader output
1 Correct 21 ms 21996 KB Output is correct
2 Correct 222 ms 34396 KB Output is correct
3 Correct 263 ms 34572 KB Output is correct
4 Correct 452 ms 53948 KB Output is correct
5 Correct 21 ms 21996 KB Output is correct
6 Correct 466 ms 43596 KB Output is correct
7 Correct 193 ms 31816 KB Output is correct
8 Correct 218 ms 33080 KB Output is correct
9 Correct 212 ms 32328 KB Output is correct
10 Correct 596 ms 43456 KB Output is correct
11 Correct 530 ms 43044 KB Output is correct

Subtask #10
12.5 / 12.5

# Verdict Execution time Memory Grader output
1 Correct 21 ms 21996 KB Output is correct
2 Correct 222 ms 34396 KB Output is correct
3 Correct 263 ms 34572 KB Output is correct
4 Correct 452 ms 53948 KB Output is correct
5 Correct 21 ms 21996 KB Output is correct
6 Correct 466 ms 43596 KB Output is correct
7 Correct 193 ms 31816 KB Output is correct
8 Correct 218 ms 33080 KB Output is correct
9 Correct 212 ms 32328 KB Output is correct
10 Correct 596 ms 43456 KB Output is correct
11 Correct 530 ms 43044 KB Output is correct
12 Correct 22 ms 22832 KB Output is correct
13 Correct 197 ms 37344 KB Output is correct
14 Correct 472 ms 55112 KB Output is correct
15 Correct 230 ms 36936 KB Output is correct
16 Correct 205 ms 36884 KB Output is correct
17 Correct 22 ms 22824 KB Output is correct
18 Correct 590 ms 45744 KB Output is correct
19 Correct 231 ms 34632 KB Output is correct
20 Correct 247 ms 34888 KB Output is correct
21 Correct 274 ms 35400 KB Output is correct
22 Correct 779 ms 47612 KB Output is correct
23 Correct 845 ms 45488 KB Output is correct
24 Correct 780 ms 47544 KB Output is correct

Subtask #11
17.5 / 17.5

# Verdict Execution time Memory Grader output
1 Correct 21 ms 21996 KB Output is correct
2 Correct 36 ms 24648 KB Output is correct
3 Correct 43 ms 23364 KB Output is correct
4 Correct 34 ms 23112 KB Output is correct
5 Correct 33 ms 23316 KB Output is correct
6 Correct 62 ms 23256 KB Output is correct
7 Correct 23 ms 22956 KB Output is correct
8 Correct 325 ms 49776 KB Output is correct
9 Correct 318 ms 52276 KB Output is correct
10 Correct 21 ms 23020 KB Output is correct
11 Correct 209 ms 37196 KB Output is correct
12 Correct 220 ms 35988 KB Output is correct
13 Correct 452 ms 51128 KB Output is correct
14 Correct 26 ms 22924 KB Output is correct
15 Correct 497 ms 43704 KB Output is correct
16 Correct 211 ms 31828 KB Output is correct
17 Correct 206 ms 32072 KB Output is correct
18 Correct 234 ms 32400 KB Output is correct
19 Correct 600 ms 46204 KB Output is correct
20 Correct 631 ms 45860 KB Output is correct
21 Correct 440 ms 48936 KB Output is correct
22 Correct 409 ms 45472 KB Output is correct
23 Correct 252 ms 34528 KB Output is correct
24 Correct 226 ms 31820 KB Output is correct
25 Correct 302 ms 42304 KB Output is correct
26 Correct 301 ms 35920 KB Output is correct
27 Correct 378 ms 37960 KB Output is correct

Subtask #12
17.5 / 17.5

# Verdict Execution time Memory Grader output
1 Correct 21 ms 21996 KB Output is correct
2 Correct 36 ms 24648 KB Output is correct
3 Correct 43 ms 23364 KB Output is correct
4 Correct 34 ms 23112 KB Output is correct
5 Correct 33 ms 23316 KB Output is correct
6 Correct 62 ms 23256 KB Output is correct
7 Correct 23 ms 22956 KB Output is correct
8 Correct 325 ms 49776 KB Output is correct
9 Correct 318 ms 52276 KB Output is correct
10 Correct 21 ms 23020 KB Output is correct
11 Correct 209 ms 37196 KB Output is correct
12 Correct 220 ms 35988 KB Output is correct
13 Correct 452 ms 51128 KB Output is correct
14 Correct 26 ms 22924 KB Output is correct
15 Correct 497 ms 43704 KB Output is correct
16 Correct 211 ms 31828 KB Output is correct
17 Correct 206 ms 32072 KB Output is correct
18 Correct 234 ms 32400 KB Output is correct
19 Correct 600 ms 46204 KB Output is correct
20 Correct 631 ms 45860 KB Output is correct
21 Correct 440 ms 48936 KB Output is correct
22 Correct 409 ms 45472 KB Output is correct
23 Correct 252 ms 34528 KB Output is correct
24 Correct 226 ms 31820 KB Output is correct
25 Correct 302 ms 42304 KB Output is correct
26 Correct 301 ms 35920 KB Output is correct
27 Correct 378 ms 37960 KB Output is correct
28 Correct 22 ms 21984 KB Output is correct
29 Correct 44 ms 24444 KB Output is correct
30 Correct 48 ms 23552 KB Output is correct
31 Correct 42 ms 24392 KB Output is correct
32 Correct 39 ms 24392 KB Output is correct
33 Correct 69 ms 25508 KB Output is correct
34 Correct 23 ms 22944 KB Output is correct
35 Correct 338 ms 54396 KB Output is correct
36 Correct 251 ms 54460 KB Output is correct
37 Correct 321 ms 54684 KB Output is correct
38 Correct 22 ms 22832 KB Output is correct
39 Correct 218 ms 37192 KB Output is correct
40 Correct 553 ms 55208 KB Output is correct
41 Correct 298 ms 36948 KB Output is correct
42 Correct 270 ms 37184 KB Output is correct
43 Correct 32 ms 20484 KB Output is correct
44 Correct 595 ms 45744 KB Output is correct
45 Correct 241 ms 34564 KB Output is correct
46 Correct 209 ms 34888 KB Output is correct
47 Correct 220 ms 35312 KB Output is correct
48 Correct 704 ms 47540 KB Output is correct
49 Correct 751 ms 45588 KB Output is correct
50 Correct 666 ms 47712 KB Output is correct
51 Correct 308 ms 51660 KB Output is correct
52 Correct 256 ms 56864 KB Output is correct
53 Correct 289 ms 55100 KB Output is correct
54 Correct 279 ms 55508 KB Output is correct
55 Correct 266 ms 51156 KB Output is correct
56 Correct 228 ms 35344 KB Output is correct
57 Correct 319 ms 45348 KB Output is correct
58 Correct 453 ms 39100 KB Output is correct
59 Correct 426 ms 41920 KB Output is correct