Submission #485283

#	Time	Username	Problem	Language	Result	Execution time	Memory
485283		errorgorn	Dojave (COCI17_dojave)	C++17	140 / 140	1135 ms	163288 KiB

dojave

//雪花飄飄北風嘯嘯
//天地一片蒼茫

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/rope>
using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
#define ll long long
#define ii pair<ll,ll>
#define iii pair<ii,ll>
#define fi first
#define se second
#define endl '\n'
#define debug(x) cout << #x << ": " << x << endl

#define pub push_back
#define pob pop_back
#define puf push_front
#define pof pop_front
#define lb lower_bound
#define ub upper_bound

#define rep(x,start,end) for(auto x=(start)-((start)>(end));x!=(end)-((start)>(end));((start)<(end)?x++:x--))
#define all(x) (x).begin(),(x).end()
#define sz(x) (int)(x).size()

#define indexed_set tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update>
//change less to less_equal for non distinct pbds, but erase will bug

mt19937 rng(chrono::system_clock::now().time_since_epoch().count());

const int INF=1e9;
struct node{
	int s,e,m;
	ii val;
	ll lazy=0;
	node *l,*r;
	
	node (int _s,int _e){
		s=_s,e=_e,m=s+e>>1;
		
		val=ii(-1,s);
		
		if (s!=e){
			l=new node(s,m);
			r=new node(m+1,e);
		}
	}
	
	void propo(){
		if (lazy){
			val.fi+=lazy;
			if (s!=e){
				l->lazy+=lazy;
				r->lazy+=lazy;
			}
			lazy=0;
		}
	}
	
	void update(int i,int j,ll k){
		if (s==i && e==j){
			lazy+=k;
		}
		else{
			if (j<=m) l->update(i,j,k);
			else if (m<i) r->update(i,j,k);
			else l->update(i,m,k),r->update(m+1,j,k);
			
			l->propo(),r->propo();
			val=max(l->val,r->val);
		}
	}
} *root=new node(0,1100005);

int n;
int arr[1100000];
int temp[1100000];

ii cnt[1100000];

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin.exceptions(ios::badbit | ios::failbit);
	
	cin>>n;
	rep(x,0,1<<n) cin>>arr[x];
	
	if (n==1){
		cout<<2<<endl;
		return 0;
	}
	
	int af=(1<<n)-1;
	ll ans=(1LL<<n)*((1LL<<n)+1)/2;
	
	memset(temp,-1,sizeof(temp));
	
	rep(x,0,1<<n){
		if (temp[arr[x]]==-1) temp[af^arr[x]]=x;
	}
	
	rep(x,0,1<<n){
		if (x%4<2) cnt[x].fi++;
		else cnt[x].se++;
	}
	
	rep(x,0,1<<n){
		if (x) root->update(0,x-1,-1);
		if (temp[arr[x]]==-1){
			root->update(0,x,-INF);
		}
		else{
			root->update(0,temp[arr[x]],INF+2);
		}
		
		auto it=root->val;
		if (it.fi==0){
			cnt[x+1]=cnt[it.se];
			if ((x+1)%4<2){
				ans-=cnt[x+1].fi;
				cnt[x+1].fi++;
			}
			else{
				ans-=cnt[x+1].se;
				cnt[x+1].se++;
			}
			
			//cout<<x+1<<" "<<cnt[x+1].fi<<" "<<cnt[x+1].se<<endl;
		}
	}
	
	cout<<ans<<endl;
}

Compilation message (stderr)

dojave.cpp: In constructor 'node::node(int, int)':
dojave.cpp:46:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   46 |   s=_s,e=_e,m=s+e>>1;
      |               ~^~

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 14 / 14
• Subtask 4: 14 / 14
• Subtask 5: 14 / 14
• Subtask 6: 14 / 14
• Subtask 7: 14 / 14
• Subtask 8: 14 / 14
• Subtask 9: 14 / 14
• Subtask 10: 14 / 14