Submission #547093

#	Time	Username	Problem	Language	Result	Execution time	Memory
547093		errorgorn	Radio (COCI22_radio)	C++17	40 / 110	1509 ms	221960 KiB

Main

// Super Idol的笑容
//    都没你的甜
//  八月正午的阳光
//    都没你耀眼
//  热爱105°C的你
// 滴滴清纯的蒸馏水

#include <bits/stdc++.h>
using namespace std;
#define int long long
#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());

struct node{
	const int BUF=1000010;
	int tree[2000100];
	
	node(){
		memset(tree,63,sizeof(tree));
	}
	
	void upd(int i,int k){
		i+=BUF;
		tree[i]=k;
		while (i>>=1){
			tree[i]=min(tree[i<<1],tree[i<<1|1]);
		}
	}
	
	int query(int i,int j){
		i+=BUF,j+=BUF+1;
		
		int res=1e9;
		while (i<j){
			if (i&1){
				res=min(res,tree[i]);
				i++;
			}
			if (j&1){
				j--;
				res=min(res,tree[j]);
			}
			
			i>>=1,j>>=1;
		}
		
		return res;
	}
} root;

int n,q;
vector<int> primes[1000005];

bool has[1000005];
set<int> pos[1000005];
multiset<int> s[1000005];

signed main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin.exceptions(ios::badbit | ios::failbit);
	
	rep(x,2,1000005) if (primes[x].empty()){
		for (int y=x;y<1000005;y+=x) primes[y].pub(x);
	}
	
	//rep(x,2,11) for (auto it:primes[x]) cout<<it<<" "; cout<<endl;
	
	cin>>n>>q;
	
	char c;
	int a,b;
	while (q--){
		cin>>c;
		if (c=='S'){
			cin>>a;
			
			if (!has[a]){
				for (auto it:primes[a]){
					auto iter=pos[it].insert(a).fi;
					
					int l=-1,r=-1;
					if (iter!=pos[it].begin()) l=*prev(iter);
					if (iter!=prev(pos[it].end())) r=*next(iter);
					
					if (l!=-1 && r!=-1) s[l].erase(s[l].find(r));
					if (l!=-1) s[l].insert(a);
					if (r!=-1) s[a].insert(r);
					
					if (l!=-1) root.upd(l,s[l].empty()?1e9:*s[l].begin());
					root.upd(a,s[a].empty()?1e9:*s[a].begin());
				}
			}
			else{
				for (auto it:primes[a]){
					auto iter=pos[it].find(a);
					
					int l=-1,r=-1;
					if (iter!=pos[it].begin()) l=*prev(iter);
					if (iter!=prev(pos[it].end())) r=*next(iter);
					
					if (l!=-1 && r!=-1) s[l].insert(r);
					if (l!=-1) s[l].erase(s[l].find(a));
					if (r!=-1) s[a].erase(s[a].find(r));
					
					if (l!=-1) root.upd(l,s[l].empty()?1e9:*s[l].begin());
					root.upd(a,s[a].empty()?1e9:*s[a].begin());
					
					pos[it].erase(a);
				}
			}
			
			has[a]^=true;
		}
		else{
			cin>>a>>b;
			
			if (root.query(a,b)<=b) cout<<"DA"<<endl;
			else cout<<"NE"<<endl;
		}
	}
}

• Subtask 1: 10 / 10
• Subtask 2: 30 / 30
• Subtask 3: 0 / 70