Submission #709778

#	Time	Username	Problem	Language	Result	Execution time	Memory
709778		groshi	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	64 / 100	472 ms	165552 KiB

sortbooks

#include<iostream>
#include<vector>
using namespace std;
vector<int> drzewo[2000000];
int wynik[2000000];
int maxx=0;
int wynikk=0;
int pot=1;
void dodaj(int x)
{
    wynikk=max(wynikk,wynik[x]);
    if(drzewo[x].size()==0)
        return;
    int mam=drzewo[x].back();
    if(maxx==0)
    {
        maxx=mam;
        return;
    }
    int gdzie=lower_bound(drzewo[x].begin(),drzewo[x].end(),maxx)-drzewo[x].begin();
    if(gdzie>=1 && gdzie<=drzewo[x].size())
        wynikk=max(wynikk,maxx+drzewo[x][gdzie-1]);
    maxx=max(maxx,mam);
}
void zapp(int x,int l,int r,int a,int b)
{
    if(l>b || r<a)
        return;
    if(a<=l && r<=b)
    {
        dodaj(x);
        return;
    }
    int mid=(l+r)/2;
    zapp(x*2,l,mid,a,b);
    zapp(x*2+1,mid+1,r,a,b);
}
int32_t main()
{
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    int n,zap,x;
    cin>>n>>zap;
    while(pot<=n)
        pot*=2;
    pot--;
    for(int i=1;i<=n;i++)
    {
        cin>>x;
        drzewo[i+pot].push_back(x);
    }
    for(int i=pot;i>=1;i--)
    {
        ///merguje i*2 z i*2+1
        wynik[i]=max(wynik[i*2],wynik[i*2+1]);
        if(drzewo[i*2].size()>0)
        {
            int jest=drzewo[i*2].back();
            int gdzie=lower_bound(drzewo[i*2+1].begin(),drzewo[i*2+1].end(),jest)-drzewo[i*2+1].begin();
            if(gdzie>=1 && gdzie<=drzewo[i*2+1].size())
                wynik[i]=max(wynik[i],jest+drzewo[i*2+1][gdzie-1]);
        }
        int l=0,r=0;
        while(l<drzewo[i*2].size() || r<drzewo[i*2+1].size())
        {
            if(l==drzewo[i*2].size())
            {
                drzewo[i].push_back(drzewo[i*2+1][r]);
                r++;
                continue;
            }
            if(r==drzewo[i*2+1].size())
            {
                drzewo[i].push_back(drzewo[i*2][l]);
                l++;
                continue;
            }
            if(drzewo[i*2][l]<=drzewo[i*2+1][r])
            {
                drzewo[i].push_back(drzewo[i*2][l]);
                l++;
            }
            else{
                drzewo[i].push_back(drzewo[i*2+1][r]);
                r++;
            }
        }
    }
    while(zap--)
    {
        int x,y,z;
        cin>>x>>y>>z;
        maxx=0;
        wynikk=0;
        zapp(1,pot+1,pot*2+1,x+pot,y+pot);
        //cout<<wynikk<<"\n";
        if(wynikk>z)
            cout<<"0\n";
        else cout<<"1\n";
    }
    return 0;
}

Compilation message (stderr)

sortbooks.cpp: In function 'void dodaj(int)':
sortbooks.cpp:21:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     if(gdzie>=1 && gdzie<=drzewo[x].size())
      |                    ~~~~~^~~~~~~~~~~~~~~~~~
sortbooks.cpp: In function 'int32_t main()':
sortbooks.cpp:61:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |             if(gdzie>=1 && gdzie<=drzewo[i*2+1].size())
      |                            ~~~~~^~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:65:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   65 |         while(l<drzewo[i*2].size() || r<drzewo[i*2+1].size())
      |               ~^~~~~~~~~~~~~~~~~~~
sortbooks.cpp:65:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   65 |         while(l<drzewo[i*2].size() || r<drzewo[i*2+1].size())
      |                                       ~^~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:67:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |             if(l==drzewo[i*2].size())
      |                ~^~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:73:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |             if(r==drzewo[i*2+1].size())
      |                ~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 0 / 13
• Subtask 4: 17 / 17
• Subtask 5: 30 / 30
• Subtask 6: 0 / 23