Submission #1040334

#	Time	Username	Problem	Language	Result	Execution time	Memory
1040334		vjudge1	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	8 / 100	3074 ms	262144 KiB

sortbooks

#include<bits/stdc++.h>
using namespace std;
long long n,m,a[1000006],rmx[30][1000006],vt[30][1000006];
void buildd()
{
	for(int i=1;i<=n;i++)
	{
		rmx[0][i]=a[i];
		vt[0][i]=i;
	}
	for(int i=1;i<=21;i++)
	{
		for(int j=1;j<=n-(1<<i)+1;j++)
		{
			if(rmx[i-1][j]>=rmx[i-1][j+(1<<(i-1))])
			{
				rmx[i][j]=rmx[i-1][j];
				vt[i][j]=vt[i-1][j];
			}
			else
			{
				rmx[i][j]=rmx[i-1][j+(1<<(i-1))];
				vt[i][j]=vt[i-1][j+(1<<(i-1))];
			}
		}
	}
}
pair<int,int> getmx(long long l,long long r)
{
	long long k=__lg(r-l+1);
	if(rmx[k][l]>=rmx[k][r-(1<<k)+1])
	{
		return {rmx[k][l],vt[k][l]};
	}
	else return {rmx[k][r-(1<<k)+1],vt[k][r-(1<<k)+1]};
}
long long get(long long l,long long r,long long w)
{
	if(l==r)
	{
		if(a[l]<w) return a[l];
		else return -1;
	}
	pair<int,int> p=getmx(l,r);
	if(p.first<w) return p.first;
	long long mid=(l+r)/2;
	return max(get(l,mid,w),get(mid+1,r,w));
}
int main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);cout.tie(0);
//	freopen(".inp","r",stdin);
//	freopen(".out","w",stdout);
	cin>>n>>m;
	for(int i=1;i<=n;i++)
	{
		cin>>a[i];
	}
	buildd();
	while(m--)
	{
		long long l,r,k;
		cin>>l>>r>>k;
		while(r>=l&&getmx(l,r).first==a[r])
		{
			r--;
		}
		if(r<l) cout<<1<<endl;
		else
		{
			bool kt=true;
			for(int i=r-1;i>=l;i--)
			{
//				pair<long long,long long> p=getmx(i,r);
				long long h=get(i,r,a[i]);
//				cout<<a[i]<<' '<<h<<endl;
				if(a[i]+h<=k)
				{
					continue;
				}
				else 
				{
					kt=false;
				}
			}
			cout<<kt<<endl;
		}
		
	}
	return 0;
}

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