oj.uz

Submission #244572

# Submission time Handle Problem Language Result Execution time Memory
244572 2020-07-04T09:58:28 Z uacoder123 Exhibition (JOI19_ho_t2) C++14
0 / 100
 15 ms 12928 KB 
#include <bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define FOR(i,a,b) for (auto i = (a); i <= (b); ++i)
#define NFOR(i,a,b) for(auto i = (a); i >= (b); --i)
#define all(x) (x).begin(), (x).end()
#define sz(x) int(x.size())
#define mp(i,a) make_pair(i,a)
#define pb(a) push_back(a)
#define bit(x,b) (x&(1LL<<b))
 
typedef int lli;
typedef pair <lli,lli> ii;
typedef pair <lli,ii> iii;
typedef vector <lli> vi;
vector<ii> segt1[4*100100];
ii segt2[8*100100],arr[100001];
int fr[100001];
vi v;
unordered_map<lli,lli> m1;

void merge(int node)
{
  int s=0,s1=0;
  while(s+s1!=segt1[2*node+1].size()+segt1[2*node+2].size())
  {
    if(segt1[2*node+1].size()!=s&&(segt1[2*node+2].size()==s1||segt1[2*node+1][s]<=segt1[2*node+2][s1]))
    {
      segt1[node].pb(segt1[2*node+1][s]);
      s++;
    }
    else
    {
      segt1[node].pb(segt1[2*node+2][s1]);
      s1++;
    }
  }
}
void build(int node,int l,int r)
{
  if(l==r)
  {
    segt1[node].pb(mp(arr[l].S,l));
    return;
  }
  int m=(l+r)/2;
  build(2*node+1,l,m);
  build(2*node+2,m+1,r);
  merge(node);
}
void up2(int node,int l,int r,int in,ii val)
{
  if(l==r)
  {
    segt2[node]=val;
    return;
  }
  int m=(l+r)/2;
  if(in<=m)
    up2(2*node+1,l,m,in,val);
  else
    up2(2*node+2,m+1,r,in,val);
  if(segt2[2*node+1].F==segt2[2*node+2].F)
    segt2[node]=min(segt2[2*node+1],segt2[2*node+2]);
  else
    segt2[node]=max(segt2[2*node+1],segt2[2*node+2]);
}
int qu1(int node,int l,int r,int s,int e,int val)
{
  if(l>e||r<s)
    return(1000000000);
  if(l>=s&&r<=e)
  {
    int it=lower_bound(all(segt1[node]),mp(val,0))-segt1[node].begin();
    if(it>=segt1[node].size()||segt1[node][it].F>val)
      it--;
    if(it==-1)
      return(1000000000);
    else
      return(segt1[node][it].S);
  }
  int m=(l+r)/2;
  int q1=qu1(2*node+1,l,m,s,e,val),q2=qu1(2*node+2,m+1,r,s,e,val);
  return(min(q1,q2));
}
ii qu2(int node,int l,int r,int s,int e,int n,int k)
{
  if(r<s||l>e)
    return(mp(0,-1));
  if(l>=s&&r<=e)
  {
    if(qu1(0,0,n-1,segt2[node].S+1,n-1,k)!=1000000000)
      return(segt2[node]);
    else
      return(mp(0,-1));
  }
  int m=(l+r)/2;
  ii q1=qu2(2*node+1,l,m,s,e,n,k),q2=qu2(2*node+2,m+1,r,s,e,n,k);
  if(q1.F==q2.F)
    return(min(q1,q2));
  else
    return(max(q1,q2));
}
int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  lli test=1;
  for(int i=0;i<4*100010;++i)
    segt2[i]=mp(0,-1);
  for(;test>0;--test)
  {
    int n,m;
    cin>>n>>m;
    for(int i=0;i<n;++i)
    {
      int f,s;
      cin>>f>>s;
      arr[i]=mp(s,f);
      v.pb(f);
    }
    for(int i=0;i<m;++i)
    {
      cin>>fr[i];
      v.pb(fr[i]);
    }
    sort(all(v));
    for(lli i=0;i<v.size();++i)
      m1[v[i]]=i+1;
    for(int i=0;i<n;++i)
      arr[i].S=m1[arr[i].S];
    for(int i=0;i<m;++i)
      fr[i]=m1[fr[i]];
    sort(arr,arr+n);
    build(0,0,n-1);
    lli ma=0;
    sort(fr,fr+m);
    for(int i=0;i<m;++i)
    {
      ii sl=qu2(0,0,m+n+1,0,fr[i],n,fr[i]);
      int in=qu1(0,0,n-1,sl.S+1,n-1,fr[i]);
      if(in!=1000000000)
      {
        up2(0,0,m+n+1,fr[i],mp(sl.F+1,in));
        ma=max(ma,sl.F+1);
      }
    }
    cout<<ma<<endl;
  }
  return(0);
}

Compilation message

joi2019_ho_t2.cpp: In function 'void merge(int)':
joi2019_ho_t2.cpp:26:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   while(s+s1!=segt1[2*node+1].size()+segt1[2*node+2].size())
         ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t2.cpp:28:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(segt1[2*node+1].size()!=s&&(segt1[2*node+2].size()==s1||segt1[2*node+1][s]<=segt1[2*node+2][s1]))
        ~~~~~~~~~~~~~~~~~~~~~~^~~
joi2019_ho_t2.cpp:28:58: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(segt1[2*node+1].size()!=s&&(segt1[2*node+2].size()==s1||segt1[2*node+1][s]<=segt1[2*node+2][s1]))
                                    ~~~~~~~~~~~~~~~~~~~~~~^~~~
joi2019_ho_t2.cpp: In function 'int qu1(int, int, int, int, int, int)':
joi2019_ho_t2.cpp:76:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(it>=segt1[node].size()||segt1[node][it].F>val)
        ~~^~~~~~~~~~~~~~~~~~~~
joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:129:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(lli i=0;i<v.size();++i)
                 ~^~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12928 KB Output is correct
2 Correct 12 ms 12928 KB Output is correct
3 Correct 12 ms 12928 KB Output is correct
4 Correct 12 ms 12928 KB Output is correct
5 Correct 13 ms 12928 KB Output is correct
6 Incorrect 15 ms 12928 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #2
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12928 KB Output is correct
2 Correct 12 ms 12928 KB Output is correct
3 Correct 12 ms 12928 KB Output is correct
4 Correct 12 ms 12928 KB Output is correct
5 Correct 13 ms 12928 KB Output is correct
6 Incorrect 15 ms 12928 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12928 KB Output is correct
2 Correct 12 ms 12928 KB Output is correct
3 Correct 12 ms 12928 KB Output is correct
4 Correct 12 ms 12928 KB Output is correct
5 Correct 13 ms 12928 KB Output is correct
6 Incorrect 15 ms 12928 KB Output isn't correct
7 Halted 0 ms 0 KB -