Submission #993272

#	Time	Username	Problem	Language	Result	Execution time	Memory
993272		vivkostov	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	0 / 100	3058 ms	252836 KiB

sortbooks

#include<bits/stdc++.h>
#define endl "\n"
using namespace std;
void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}
int n,q,a[1000005],l,r,c,cost[4000005];
vector<int>p[4000005];
mt19937 mt(time(nullptr));
int merg(vector<int>v1,vector<int>v2,vector<int>&v)
{
    int p1=0,p2=0,cos=0;
    for(int i=1;i<=v1.size()+v2.size();i++)
    {
        if(p1==v1.size())
        {
            v.push_back(v2[p2]);
            p2++;
        }
        else if(p2==v2.size())
        {
            v.push_back(v1[p1]);
            cos=max(v2[p2-1]+v1[p1],cos);
            p1++;
        }
        else if(v1[p1]>v2[p2])
        {
            v.push_back(v2[p2]);
            cos=max(cos,v2[p2]+v1[p1]);
            p2++;
        }
        else
        {
            v.push_back(v1[p1]);
            p1++;
        }
    }
    return cos;
}
void check(int l,int r,int h)
{
    cout<<l<<" "<<r<<" "<<cost[h]<<" | ";
    for(int i=0;i<p[h].size();i++)
    {
        cout<<p[h][i]<<" ";
    }
    cout<<endl;
    if(l==r)return;
    int m=(l+r)/2;
    check(l,m,h*2);
    check(m+1,r,h*2+1);
}
void build_tree(int l,int r,int h)
{
    if(l==r)
    {
        p[h].push_back(a[l]);
        return;
    }
    int m=(l+r)/2;
    build_tree(l,m,h*2);
    build_tree(m+1,r,h*2+1);
    cost[h]=merg(p[h*2],p[h*2+1],p[h]);
    cost[h]=max(max(cost[h*2],cost[h*2+1]),cost[h]);
}
int otg[10005],ot,maotg;
void query(int l,int r,int ql,int qr,int h)
{
    if(l>qr||r<ql)return;
    if(l>=ql&&r<=qr)
    {
        //cout<<l<<" "<<r<<endl;
        ot++;
        otg[ot]=h;
        maotg=max(maotg,cost[h]);
        return;
    }
    int m=(l+r)/2;
    query(l,m,ql,qr,h*2);
    query(m+1,r,ql,qr,h*2+1);
}
void dumb_query(int l,int r,int ql,int qr,int h)
{
    if(l>qr||r<ql)return;
    if(l==r)
    {
        ot++;
        otg[ot]=h;
        return;
    }
    int m=(l+r)/2;
    dumb_query(l,m,ql,qr,h*2);
    dumb_query(m+1,r,ql,qr,h*2+1);
}
void make_otg()
{
    for(int i=1;i<=ot;i++)
    {
        int w=p[otg[i]][p[otg[i]].size()-1];
        for(int j=i+1;j<=ot;j++)
        {
            int l=0,r=p[otg[j]].size()-1,m;
            while(l<=r)
            {
                m=(l+r)/2;
                if(w<=p[otg[j]][m])l=m+1;
                else r=m-1;
            }
            if(l!=0)maotg=max(maotg,w+p[otg[j]][l-1]);
        }
        //cout<<endl;
        otg[i]=0;
    }
    ot=0;
}
void dumb_make_otg()
{
    for(int i=1;i<=ot;i++)
    {
        int w=p[otg[i]][p[otg[i]].size()-1];
        for(int j=i+1;j<=ot;j++)
        {
            for(int z=p[otg[j]].size()-1;z>=0;z--)
            {
                if(w>p[otg[j]][z])
                {
                    maotg=max(maotg,p[otg[j]][z]+w);
                    break;
                }
            }
        }
        otg[i]=0;
    }
    ot=0;
}
void read()
{
    cin>>n>>q;
    for(int i=1;i<=n;i++)
    {
        cin>>a[i];
        //a[i]=mt()%20+1;
        //cout<<a[i]<<" ";
    }
    //cout<<endl;
    build_tree(1,n,1);
    //check(1,n,1);
    for(int i=1;i<=q;i++)
    {
        cin>>l>>r>>c;
        query(1,n,l,r,1);
        dumb_make_otg();
        //cout<<maotg<<" ";
        if(maotg<=c)cout<<1<<endl;
        else cout<<0<<endl;
        maotg=0;
    }
}
int main()
{
    speed();
    read();
    return 0;
}

Compilation message (stderr)

sortbooks.cpp: In function 'int merg(std::vector<int>, std::vector<int>, std::vector<int>&)':
sortbooks.cpp:16:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |     for(int i=1;i<=v1.size()+v2.size();i++)
      |                 ~^~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:18:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |         if(p1==v1.size())
      |            ~~^~~~~~~~~~~
sortbooks.cpp:23:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |         else if(p2==v2.size())
      |                 ~~^~~~~~~~~~~
sortbooks.cpp: In function 'void check(int, int, int)':
sortbooks.cpp:46:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |     for(int i=0;i<p[h].size();i++)
      |                 ~^~~~~~~~~~~~

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