Submission #465595

#	Time	Username	Problem	Language	Result	Execution time	Memory
465595		mariowong	Financial Report (JOI21_financial)	C++14	19 / 100	317 ms	12032 KiB

Main

#include <bits/stdc++.h>
 
using namespace std;

int n,d,ct,a[300005],seg[1200005],ans,now;
deque <int> dq;
vector <pair<int,int>  > v; 
void update(int id,int l,int r,int pos,int v){
	if (l == r)
	seg[id]=v;
	else
	{
		int mid=(l+r)/2;
		if (pos <= mid) update(id*2,l,mid,pos,v);
		else update(id*2+1,mid+1,r,pos,v);	
		seg[id]=max(seg[id*2],seg[id*2+1]);
	}
}
int query(int id,int l,int r,int x,int y){
	if (x <= l && y >= r)
	return seg[id];
	if (l > y || r < x)
	return -1;
	int mid=(l+r)/2;
	return max(query(id*2,l,mid,x,y),query(id*2+1,mid+1,r,x,y));
}
int main(){
	ios::sync_with_stdio(false); cin.tie(0);
	cin >> n >> d;
	for (int i=1;i<=n;i++){
		cin >> a[i];
		v.push_back(make_pair(a[i],i));
	}
	sort(v.begin(),v.end());
	for (int i=0;i<n;i++){
		if (i == 0 || v[i].first != v[i-1].first) ct++;
		a[v[i].second]=ct;
	}
	for (int i=1;i<=n;i++){
		if (!dq.empty() && i-dq.front() > d){
			update(1,0,ct,a[dq.front()],0);
			dq.pop_front();
		}
		now=max(query(1,0,ct,a[i],a[i]),query(1,0,ct,0,a[i]-1)+1);
		update(1,0,ct,a[i],now);
		ans=max(ans,now);
		while (!dq.empty() && a[dq.back()] >= a[i]){
			dq.pop_back();
		}
		dq.push_back(i);
	}
	cout << ans << "\n";
	return 0;
}

• Subtask 1: 14 / 14
• Subtask 2: 0 / 14
• Subtask 3: 0 / 20
• Subtask 4: 0 / 12
• Subtask 5: 5 / 5
• Subtask 6: 0 / 35