oj.uz

Submission #710694

# Submission time Handle Problem Language Result Execution time Memory
710694 2023-03-15T15:33:48 Z lam New Home (APIO18_new_home) C++14
5 / 100
 5000 ms 284064 KB 
#include <bits/stdc++.h>
#pragma GCC optimize ("Ofast")
#pragma GCC optimize ("unroll-loops")
using namespace std;
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
typedef pair<int,int> ii;
typedef pair<ii,int> iii;
typedef pair<ii,ii> iiii;
#define ff first
#define ss second
const int maxn = 3e5+10;
int n,k,m,o;
map<int,int> mp;
multiset<int> ms[maxn];
int b[maxn];
vector <iiii> d;
int res[maxn];
struct node
{
    int wt, key, sz;
    node *l, *r;
    node (int x)
    {
        l=r=0;
        sz = 1;
        key = x; sz = 1;
        wt = rng();
    }
};
inline int get_sz(node *&x)
{
    return (x)?x->sz:0;
}
inline void update(node *&x)
{
    x->sz = 1 + get_sz(x->l) + get_sz(x->r);
}

void split(node *x, node *&l, node *&r, int k)
{
    if (!x)
    {
        l=r=0;
        return;
    }
    if (get_sz(x->l)>=k)
    {
        split(x->l,l,x->l,k);
        r=x;
    }
    else
    {
        split(x->r,x->r,r,k-1-get_sz(x->l));
        l=x;
    }
    update(x);
}

void split_key(node *x, node *&l, node *&r, int key)
{
    if (!x)
    {
        l=r=0;
        return;
    }
    if (x->key > key)
    {
        split_key(x->l,l,x->l,key);
        r=x;
    }
    else
    {
        split_key(x->r,x->r,r,key);
        l=x;
    }
    update(x);
}

void merg(node *&x, node *l, node *r)
{
    if (!l||!r)
    {
        if (!l) x=r;
        else x=l;
        return;
    }
    if (l->wt > r->wt)
    {
        merg(l->r,l->r,r);
        x=l;
    }
    else
    {
        merg(r->l,l,r->l);
        x=r;
    }
    update(x);
}

void ins(node *&treap, int val)
{
    node *a,*b;
    split_key(treap,treap,a,val);
    b = new node(val);
    merg(treap,treap,b);
    merg(treap,treap,a);
}

void dbg(node *&x)
{
    if (!x) return;
    dbg(x->l);
    cerr<<x->key<<" :: ";
    dbg(x->r);
}
void xoa(node *&treap, int val)
{
    node *a, *b;
//    cerr<<"xoa "<<val<<endl;
//    dbg(treap); cerr<<endl;
    split_key(treap,treap,a,val-1);
    split(a,b,a,1);
    merg(treap,treap,a);
//    dbg(treap); cerr<<endl;
//    cerr<<"------------"<<endl;
    delete(b);
}


int lbound(node *&treap, int r)
{
    node *a,*b;
//    cerr<<"dbg "; dbg(treap); cerr<<endl;
    split_key(treap,treap,a,r);
    int ans = get_sz(a);
    merg(treap,treap,a);
//    cerr<<r<<" --> "<<ans<<endl;
    return ans;
}

node* f[4*maxn];

int get(int x, int lx, int rx, int l, int r)
{
    if (b[lx]>r||b[rx]<l) return 0;
    if (b[lx]>=l&&b[rx]<=r)
    {
//        cerr<<"??? "<<x<<' '<<b[lx]<<' '<<b[rx]<<endl;
        return lbound(f[x],r);
    }
    int mid=(lx+rx)/2;
    return get(2*x,lx,mid,l,r) + get(2*x+1,mid+1,rx,l,r);
}

void add(int x, int lx, int rx, int idx, int val)
{
//    cerr<<"+ "<<x<<' '<<b[lx]<<' '<<b[rx]<<" = "<<idx<<' '<<val<<endl;
    ins(f[x],val);
//    cerr<<" :) "<<endl;
    if (lx==rx) return;
    int mid=(lx+rx)/2;
    if (idx<=b[mid]) add(2*x,lx,mid,idx,val);
    else add(2*x+1,mid+1,rx,idx,val);
}
void er(int x, int lx, int rx, int idx, int val)
{
//    cerr<<"- "<<x<<' '<<b[lx]<<' '<<b[rx]<<" = "<<idx<<' '<<val<<endl;
    xoa(f[x],val);
//    cerr<<" :< "<<endl;
    if (lx==rx) return;
    int mid=(lx+rx)/2;
    if (idx<=b[mid]) er(2*x,lx,mid,idx,val);
    else er(2*x+1,mid+1,rx,idx,val);
}

void build(int x, int lx, int rx)
{
    f[x] = 0;
    if (lx==rx) return;
    int mid=(lx+rx)/2;
    build(2*x,lx,mid); build(2*x+1,mid+1,rx);
}

signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
    cin>>n>>k>>m;
    for (int i=1; i<=n; i++)
    {
        int x,t,l,r; cin>>x>>t>>l>>r;
        mp[x] = 1;
        d.push_back({{l,-1},{x,t}});
        d.push_back({{r,1},{x,t}});
    }
    for (int i=1; i<=m; i++)
    {
        int x,l; cin>>x>>l;
        d.push_back({{l,0},{x,i}});
    }
    sort(d.begin(),d.end());
    int cnt = 0;
    o = 0;
    for (auto &c:mp) c.ss = ++o, b[o] = c.ff;
//    cerr<<o<<endl;
    build(1,1,o);
    for (iiii i:d)
    {
//        cerr<<" -- "<<i.ff.ff<<' '<<i.ff.ss<<' '<<i.ss.ff<<' '<<i.ss.ss<<" -- "<<endl;
        if (i.ff.ss == -1)
        {
            int x = i.ss.ff; int t = i.ss.ss;
//            cerr<<"pro "<<x<<endl;
            if (ms[t].empty()) cnt++;
            auto r = ms[t].upper_bound(x);
            auto l = r;
            if (l!=ms[t].begin())
            {
                l--;
                if (r!=ms[t].end())
                    er(1,1,o,(*l),(*r));
                else er(1,1,o,(*l),1e9);
                add(1,1,o,(*l),x);
            }
            if (r!=ms[t].end()) add(1,1,o,x,(*r));
            else add(1,1,o,x,1e9);
            ms[t].insert(x);
//            cerr<<"pri"<<endl;
        }
        else if (i.ff.ss == 1)
        {
            int x = i.ss.ff; int t = i.ss.ss;
            auto j = ms[t].lower_bound(x);
            auto l = j; auto r = j;
//            cerr<<"notpro "<<x<<endl;
            if (r==ms[t].end()) cerr<<" :@"<<endl;
            r++;
            if (l!=ms[t].begin())
            {
                l--;
                er(1,1,o,(*l),x);
                if (r!=ms[t].end()) add(1,1,o,(*l),(*r));
                else add(1,1,o,(*l),1e9);
            }
            if (r!=ms[t].end()) er(1,1,o,x,(*r));
            else er(1,1,o,x,1e9);
            ms[t].erase(ms[t].find(x));
//            cerr<<"notpri"<<endl;
            if (ms[t].empty()) cnt--;
        }
        else
        {
            int x = i.ss.ff; int id = i.ss.ss;
            if (cnt<k) res[id] = -1;
            else
            {
                int l,r;
//                cerr<<"? "<<x<<' '<<cnt<<" = "<<id<<endl;
                l = 0; r = max(x-1,100000000-x);
                int ans = -1;
                while (l<=r)
                {
                    int mid = l+(r-l)/2;
                    if (get(1,1,o,x-mid,x+mid)==k)
                    {
                        ans = mid;
                        r=mid-1;
                    }
                    else l=mid+1;
                }
                res[id] = ans;
            }
        }
    }
    for (int i=1; i<=m; i++) cout<<res[i]<<'\n';
}
/**
4 2 4
3 1 1 10
9 2 1 7
7 2 1 4
4 1 1 10
5 3
5 5
5 8
1 4
**/

Compilation message

new_home.cpp: In function 'int lbound(node*&, int)':
new_home.cpp:132:14: warning: unused variable 'b' [-Wunused-variable]
  132 |     node *a,*b;
      |              ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 8 ms 14348 KB Output is correct
3 Correct 8 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 11 ms 14420 KB Output is correct
6 Correct 13 ms 14548 KB Output is correct
7 Correct 9 ms 14548 KB Output is correct
8 Correct 11 ms 14572 KB Output is correct
9 Correct 10 ms 14676 KB Output is correct
10 Correct 13 ms 14604 KB Output is correct
11 Correct 9 ms 14540 KB Output is correct
12 Correct 12 ms 14420 KB Output is correct
13 Correct 8 ms 14420 KB Output is correct
14 Correct 10 ms 14420 KB Output is correct
15 Correct 12 ms 14548 KB Output is correct
16 Correct 11 ms 14548 KB Output is correct
17 Correct 12 ms 14480 KB Output is correct
18 Correct 12 ms 14676 KB Output is correct
19 Correct 12 ms 14512 KB Output is correct
20 Correct 12 ms 14420 KB Output is correct
21 Correct 8 ms 14500 KB Output is correct
22 Correct 10 ms 14688 KB Output is correct
23 Correct 14 ms 14660 KB Output is correct
24 Correct 12 ms 14612 KB Output is correct
25 Correct 14 ms 14528 KB Output is correct
26 Correct 10 ms 14420 KB Output is correct
27 Correct 10 ms 14400 KB Output is correct
28 Correct 11 ms 14420 KB Output is correct
29 Correct 10 ms 14420 KB Output is correct
30 Correct 10 ms 14504 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 8 ms 14348 KB Output is correct
3 Correct 8 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 11 ms 14420 KB Output is correct
6 Correct 13 ms 14548 KB Output is correct
7 Correct 9 ms 14548 KB Output is correct
8 Correct 11 ms 14572 KB Output is correct
9 Correct 10 ms 14676 KB Output is correct
10 Correct 13 ms 14604 KB Output is correct
11 Correct 9 ms 14540 KB Output is correct
12 Correct 12 ms 14420 KB Output is correct
13 Correct 8 ms 14420 KB Output is correct
14 Correct 10 ms 14420 KB Output is correct
15 Correct 12 ms 14548 KB Output is correct
16 Correct 11 ms 14548 KB Output is correct
17 Correct 12 ms 14480 KB Output is correct
18 Correct 12 ms 14676 KB Output is correct
19 Correct 12 ms 14512 KB Output is correct
20 Correct 12 ms 14420 KB Output is correct
21 Correct 8 ms 14500 KB Output is correct
22 Correct 10 ms 14688 KB Output is correct
23 Correct 14 ms 14660 KB Output is correct
24 Correct 12 ms 14612 KB Output is correct
25 Correct 14 ms 14528 KB Output is correct
26 Correct 10 ms 14420 KB Output is correct
27 Correct 10 ms 14400 KB Output is correct
28 Correct 11 ms 14420 KB Output is correct
29 Correct 10 ms 14420 KB Output is correct
30 Correct 10 ms 14504 KB Output is correct
31 Execution timed out 5057 ms 72020 KB Time limit exceeded
32 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5078 ms 284064 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5063 ms 282096 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 8 ms 14348 KB Output is correct
3 Correct 8 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 11 ms 14420 KB Output is correct
6 Correct 13 ms 14548 KB Output is correct
7 Correct 9 ms 14548 KB Output is correct
8 Correct 11 ms 14572 KB Output is correct
9 Correct 10 ms 14676 KB Output is correct
10 Correct 13 ms 14604 KB Output is correct
11 Correct 9 ms 14540 KB Output is correct
12 Correct 12 ms 14420 KB Output is correct
13 Correct 8 ms 14420 KB Output is correct
14 Correct 10 ms 14420 KB Output is correct
15 Correct 12 ms 14548 KB Output is correct
16 Correct 11 ms 14548 KB Output is correct
17 Correct 12 ms 14480 KB Output is correct
18 Correct 12 ms 14676 KB Output is correct
19 Correct 12 ms 14512 KB Output is correct
20 Correct 12 ms 14420 KB Output is correct
21 Correct 8 ms 14500 KB Output is correct
22 Correct 10 ms 14688 KB Output is correct
23 Correct 14 ms 14660 KB Output is correct
24 Correct 12 ms 14612 KB Output is correct
25 Correct 14 ms 14528 KB Output is correct
26 Correct 10 ms 14420 KB Output is correct
27 Correct 10 ms 14400 KB Output is correct
28 Correct 11 ms 14420 KB Output is correct
29 Correct 10 ms 14420 KB Output is correct
30 Correct 10 ms 14504 KB Output is correct
31 Execution timed out 5057 ms 72020 KB Time limit exceeded
32 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 8 ms 14348 KB Output is correct
3 Correct 8 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 11 ms 14420 KB Output is correct
6 Correct 13 ms 14548 KB Output is correct
7 Correct 9 ms 14548 KB Output is correct
8 Correct 11 ms 14572 KB Output is correct
9 Correct 10 ms 14676 KB Output is correct
10 Correct 13 ms 14604 KB Output is correct
11 Correct 9 ms 14540 KB Output is correct
12 Correct 12 ms 14420 KB Output is correct
13 Correct 8 ms 14420 KB Output is correct
14 Correct 10 ms 14420 KB Output is correct
15 Correct 12 ms 14548 KB Output is correct
16 Correct 11 ms 14548 KB Output is correct
17 Correct 12 ms 14480 KB Output is correct
18 Correct 12 ms 14676 KB Output is correct
19 Correct 12 ms 14512 KB Output is correct
20 Correct 12 ms 14420 KB Output is correct
21 Correct 8 ms 14500 KB Output is correct
22 Correct 10 ms 14688 KB Output is correct
23 Correct 14 ms 14660 KB Output is correct
24 Correct 12 ms 14612 KB Output is correct
25 Correct 14 ms 14528 KB Output is correct
26 Correct 10 ms 14420 KB Output is correct
27 Correct 10 ms 14400 KB Output is correct
28 Correct 11 ms 14420 KB Output is correct
29 Correct 10 ms 14420 KB Output is correct
30 Correct 10 ms 14504 KB Output is correct
31 Execution timed out 5057 ms 72020 KB Time limit exceeded
32 Halted 0 ms 0 KB -