Submission #491753

#	Time	Username	Problem	Language	Result	Execution time	Memory
491753		reni	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	0 / 100	3047 ms	34436 KiB

sortbooks

#include<iostream>
#include<stack>
using namespace std;
long long maxi[10000000], a[10000000], b[1000000];
stack<long long>st;

void build(long long le,long long ri,long long ind)
{
    if(le==ri)
    {
        maxi[ind]=a[le]+b[le];return;
    }
    long long mid=(le+ri)/2;

    build(le,mid,2*ind);
    build(mid+1,ri,2*ind+1);

    maxi[ind]=max(maxi[2*ind],maxi[2*ind+1]);

}
long long query(long long le,long long ri,long long l,long long r,long long ind)
{
    if(le>r || ri<l)return 0;

    if(l<=le && ri<=r)
    {
        return maxi[ind];
    }
    long long mid=(le+ri)/2;

    long long r1,r2;

    r1=query(le,mid,l,r,2*ind);
    r2=query(mid+1,ri,l,r,2*ind+1);

    return max(r1,r2);
}
int main()
{
    long long i,j,n,m,l,r,k,p;

    cin>>n>>m;

    for(i=1;i<=n;i++)
    {
        cin>>p;
        b[i]=p;
        while(!st.empty() && st.top()<=p)st.pop();
        if(st.empty())
        {
            a[i]=0;
        }
        else
        {
            a[i]=st.top();
        }
        //cout<<a[i]<<endl;
         st.push(p);
    }
    build(1,n,1);
    for(i=1;i<=m;i++)
    {
        cin>>l>>r>>k;

        long long res=query(1,n,l,r,1);

        if(res<=k)cout<<1<<endl;
        else cout<<0<<endl;
    }
}

Compilation message (stderr)

sortbooks.cpp: In function 'int main()':
sortbooks.cpp:40:17: warning: unused variable 'j' [-Wunused-variable]
   40 |     long long i,j,n,m,l,r,k,p;
      |                 ^

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