Submission #503047

#	Time	Username	Problem	Language	Result	Execution time	Memory
503047		beksultan04	Financial Report (JOI21_financial)	C++14	100 / 100	896 ms	50764 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
//#define int long long
#define pii pair<int,int>
#define ret return
#define fr first
#define sc second
#define OK puts("OK");
#define NO puts("NO");
#define YES puts("YES");
#define all(s) s.begin(),s.end()
#define allr(s) s.rbegin(),s.rend()
#define nosol puts("-1");
#define pb push_back
#define endi puts("");
#define ordered_set tree <int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
const int N = 3e5+12,INF = 1e9+7;
int a[N],der[4*N],t[N];

void update(int v,int l,int r,int pos,int x){
	if (l == r){
		der[v] = x;
		ret ;
	}
	int m = l+r>>1;
	if (m < pos)update(v<<1|1,m+1,r,pos,x);
	else update(v<<1,l,m,pos,x);
	der[v] = max(der[v<<1],der[v<<1|1]);
}

int get_ans(int v,int l,int r,int ql,int qr){
	if (l > qr || r < ql)ret 0;
	if (ql <= l && r <= qr)ret der[v];
	int m = l+r>>1;
	ret max(get_ans(v<<1,l,m,ql,qr),get_ans(v<<1|1,m+1,r,ql,qr));
}


int main(){
	int i,n,d,j,ans=0;
	cin>>n>>d;
	vector <int> v;
	set <int> ss{-1};
	map <int,int> mp;
	for (i=1;i<=n;++i){
		cin>>a[i];
		ss.insert(a[i]);
	}
	int cnt = 0;
	for (auto x:ss)
		mp[x] = cnt++;
	for (i=1;i<=n;++i){
		a[i] = mp[a[i]];
	}
	multiset <int> s;
	set <int> t;
	for (i=1;i<=n;++i){
		int mx = get_ans(1,0,cnt,0,a[i]-1);
		if (get_ans(1,0,cnt,a[i],a[i]) < mx+1)
			update(1,0,cnt,a[i],mx+1);
		s.insert(a[i]);
		ans = max(ans,mx+1);
		if (i > d){
			s.erase(s.lower_bound(a[i-d]));
			if (*s.begin() > a[i-d]){
				update(1,0,cnt,a[i-d],0);
				while (!s.empty() && !t.empty() && *s.begin() > *t.begin()){
					update(1,0,cnt,*t.begin(),0);
					t.erase(t.begin());
				}
			}
			else 
				t.insert(a[i-d]);
		}
	}endi
	cout <<ans;
	
	
	
}






 

Compilation message (stderr)

Main.cpp: In function 'void update(int, int, int, int, int)':
Main.cpp:28:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   28 |  int m = l+r>>1;
      |          ~^~
Main.cpp: In function 'int get_ans(int, int, int, int, int)':
Main.cpp:37:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   37 |  int m = l+r>>1;
      |          ~^~
Main.cpp: In function 'int main()':
Main.cpp:43:12: warning: unused variable 'j' [-Wunused-variable]
   43 |  int i,n,d,j,ans=0;
      |            ^

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