제출 #1341154

#제출 시각아이디문제언어결과실행 시간메모리
1341154JuanJLGift Exchange (JOI24_ho_t4)C++20
50 / 100
2593 ms13688 KiB
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>

#define fst first
#define snd second
#define pb push_back
#define SZ(x) (int)x.size()
#define ALL(x) x.begin(),x.end()
#define forn(i,a,b) for(int i = a; i<b; i++)
#define mset(a,v) memset(a,v,sizeof(a))
#define FIN ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
template< typename T >
using iset = tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;


int main(){ 
	ll n; cin>>n;
	vector<ll> a(n); forn(i,0,n) cin>>a[i];
	vector<ll> b(n); forn(i,0,n) cin>>b[i];

	ll q; cin>>q;
	forn(iqq,0,q){
		ll l,r; cin>>l>>r; l--; r--;

		set<pair<ll,ll>> disp; 
		forn(i,l,r+1){
			disp.insert({b[i],i});
		}

		vector<pair<pair<ll,ll>,ll>> as; 
		forn(i,l,r+1){
			as.pb({{b[i],a[i]},i});
		}

		sort(ALL(as));

		//cout<<"Llega\n";

		bool yes = true;
		forn(i,0,SZ(as)){
			bool erased = false;
			auto itf = disp.find({b[as[i].snd],as[i].snd});
			if(itf!=disp.end()){
				erased=true;
				disp.erase(itf);
			}

			if(SZ(disp)==0){
				yes=false;
				break;
			}
			auto it = disp.lower_bound({as[i].fst.snd,-1}); if(it==disp.end()) it--;
			if((*it).fst>as[i].fst.snd && it!=disp.begin()){
				it--;
			}
			
			if((*it).fst>as[i].fst.snd){
				yes=false;
				break;
			}else{
				//cout<<as[i].snd<<" to "<<(*it).snd<<'\n';
				disp.erase(it);
			}

			if(erased){
				disp.insert({b[as[i].snd],as[i].snd});
			}
		}
		if(yes) cout<<"Yes\n";
		else cout<<"No\n";
	}
	return 0;
}
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