oj.uz

Submission #93529

# Submission time Handle Problem Language Result Execution time Memory
93529 2019-01-09T11:28:20 Z Bodo171 Wall (IOI14_wall) C++14
8 / 100
 3000 ms 14072 KB 
#include "wall.h"
#include <iostream>
#include <climits>
#include <set>
using namespace std;
const int nmax=2*1000*1000+5;
struct aint
{
    int mn,mx,whmn,whmx;
}arb[4*nmax],ans;
void mrg(aint &A,aint B,aint C)
{
    A=B;
    if(C.mn<A.mn) A.mn=C.mn,A.whmn=C.whmn;
    if(C.mx>A.mx) A.mx=C.mx,A.whmx=C.whmx;
}
set<int> s;
set<int>::iterator it,it1;
int v[nmax];
int n,poz,i;
void upd(int nod,int l,int r,int poz)
{
    if(l==r)
    {
        arb[nod].mx=arb[nod].mn=v[poz];
        arb[nod].whmx=arb[nod].whmn=poz;
        if(v[poz]==-1)
        {
            arb[nod].mx=-1;arb[nod].mn=INT_MAX;
        }
        return;
    }
    int m=(l+r)/2;
    if(poz<=m) upd(2*nod,l,m,poz);
    else upd(2*nod+1,m+1,r,poz);
    mrg(arb[nod],arb[2*nod],arb[2*nod+1]);
}
void query(int nod,int l,int r,int st,int dr)
{
    if(l==r)
    {
        mrg(ans,ans,arb[nod]);
        return;
    }
    int m=(l+r)/2;
    if(st<=m) query(2*nod,l,m,st,dr);
    if(m<dr) query(2*nod+1,m+1,r,st,dr);
}
int getmx(int st,int dr)
{
    ans.mx=-1,ans.mn=INT_MAX;
    query(1,1,n,st,dr);
    poz=ans.whmx;
    return ans.mx;
}
int getmn(int st,int dr)
{
    ans.mx=-1,ans.mn=INT_MAX;
    query(1,1,n,st,dr);
    poz=ans.whmn;
    return ans.mn;
}
void rs(int wh,int llim,int H)
{
    it=s.lower_bound(wh);
    if(it!=s.begin())
    {
        it--;
        if((*it)<llim-1)
        {
            v[llim-1]=v[wh];
            s.insert(llim-1);
            upd(1,1,n,llim-1);
        }
    }
    else
    {
        if(llim-1)
        {
            v[llim-1]=v[wh];
            s.insert(llim-1);
            upd(1,1,n,llim-1);
        }
    }
    s.insert(wh);
    v[wh]=H;
    upd(1,1,n,wh);
}
void comp(int poz)
{
    it=s.lower_bound(poz);
    bool brk=0;
    if(it!=s.begin())
    {
        it--;
        while(it!=s.begin()&&(!brk))
        {
            if(v[(*it)]!=v[poz]) brk=1;
            else
            {
                v[(*it)]=-1;
                upd(1,1,n,(*it));
                it1=it;
                it1--;
                s.erase(it);
                it=it1;
            }
        }
    }
    if(s.upper_bound(poz)!=s.end()&&v[(*s.upper_bound(poz))]==v[poz])
    {
        v[poz]=-1;upd(1,1,n,poz);
        s.erase(poz);
    }
}
bool finds(int x)
{
    return (s.find(x)!=s.end());
}
void build(int nod,int l,int r)
{
    if(l==r)
    {
        arb[nod].whmx=arb[nod].whmn=l;
        arb[nod].mx=-1;arb[nod].mn=INT_MAX;
        return;
    }
    int m=(l+r)/2;
    build(2*nod,l,m);
    build(2*nod+1,m+1,r);
    mrg(arb[nod],arb[2*nod],arb[2*nod+1]);
}
void buildWall(int N, int k, int op[], int left[], int right[], int height[], int finalHeight[]){
  n=N;
  build(1,1,n);
  int h,pp;
  s.insert(n);
  v[n]=0;
  upd(1,1,n,n);
  for(int i=0;i<k;i++)
  {
      left[i]++;right[i]++;
      h=height[i];
      if(op[i]==1)
      {
          while(getmn(left[i],right[i])<h)
          {
              if(finds(poz))
              {
               rs(poz,left[i],h);
               if(finds(left[i]-1))comp(left[i]-1);
               if(finds(poz)) comp(poz);
              }
          }
          pp=(*s.lower_bound(right[i]));
          if(getmn(pp,pp)<h)
          {
              if(finds(pp))
              {
              rs(pp,left[i],v[pp]);
              rs(right[i],left[i],h);
              if(finds(left[i]-1))comp(left[i]-1);
              if(finds(right[i])) comp(right[i]);
              }
          }
      }
      else
      {
          while(getmx(left[i],right[i])>h)
          {
              rs(poz,left[i],h);
          }
          pp=(*s.lower_bound(right[i]));
          if(getmx(pp,pp)>h)
          {
              rs(pp,left[i],v[pp]);
              rs(right[i],left[i],h);
              upd(1,1,n,right[i]);
              if(finds(left[i]-1))comp(left[i]-1);
              if(finds(right[i])) comp(right[i]);
          }
      }
  }
  for(i=1;i<=n;i++)
    if(finds(i)) finalHeight[i-1]=v[i];
  for(i=n-1;i>=0;i--)
    if(!finds(i+1))
      finalHeight[i]=finalHeight[i+1];
  return;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 4 ms 504 KB Output is correct
3 Correct 8 ms 376 KB Output is correct
4 Correct 322 ms 1144 KB Output is correct
5 Correct 138 ms 1400 KB Output is correct
6 Correct 137 ms 1400 KB Output is correct

Subtask #2
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 146 ms 14004 KB Output is correct
3 Execution timed out 3046 ms 8552 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 3 ms 504 KB Output is correct
3 Correct 8 ms 504 KB Output is correct
4 Correct 320 ms 1156 KB Output is correct
5 Correct 135 ms 1272 KB Output is correct
6 Correct 136 ms 1400 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 145 ms 14072 KB Output is correct
9 Execution timed out 3045 ms 8552 KB Time limit exceeded
10 Halted 0 ms 0 KB -

Subtask #4
0 / 39.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 4 ms 504 KB Output is correct
3 Correct 9 ms 376 KB Output is correct
4 Correct 317 ms 1144 KB Output is correct
5 Correct 136 ms 1648 KB Output is correct
6 Correct 136 ms 1408 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 147 ms 13960 KB Output is correct
9 Execution timed out 3060 ms 8596 KB Time limit exceeded
10 Halted 0 ms 0 KB -