Submission #427806

#	Time	Username	Problem	Language	Result	Execution time	Memory
427806		errorgorn	Trampoline (info1cup20_trampoline)	C++17	43 / 100	762 ms	42660 KiB

trampoline

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

#define ll long long
#define ii pair<ll,ll>
#define fi first
#define se second
#define endl '\n'

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

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

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

int r,c,n,q;
ii arr[200005];
int nxt[200005][20];;

map<int,vector<ii> > m;

int main(){
	cin.tie(0);
	cout.tie(0);
	cin.sync_with_stdio(false);
	
	cin>>r>>c>>n;
	rep(x,0,n) cin>>arr[x].fi>>arr[x].se;
	
	sort(arr,arr+n);
	
	rep(x,0,n){
		m[arr[x].fi].pub(ii(arr[x].se,x));
	}
	
	memset(nxt,-1,sizeof(nxt));
	
	rep(x,0,n){
		int temp=-1;
		
		if (m.count(arr[x].fi+1)){
			auto iter=lb(all(m[arr[x].fi+1]),ii(arr[x].se,-1));
			if (iter!=m[arr[x].fi+1].end()) temp=(*iter).se;
		}
		
		nxt[x][0]=temp;
	}
	
	rep(x,n,0){
		int curr=nxt[x][0];
		rep(y,0,20){
			if (curr==-1) break;
			curr=nxt[x][y+1]=nxt[curr][y];
		}
	}
	
	cin>>q;
	
	int a,b,c,d;
	while (q--){
		cin>>a>>b>>c>>d;
		//cerr<<a<<" "<<b<<" "<<c<<" "<<d<<endl;
		
		if (a>c || b>d){
			cout<<"No"<<endl;
			continue;
		}
		if (a==c){
			cout<<"Yes"<<endl;
			continue;
		}
		
		int idx=-1;
		if (m.count(a)){
			auto iter=lb(all(m[a]),ii(b,-1));
			if (iter!=m[a].end()) idx=(*iter).se;
		}
		
		if (idx==-1){
			cout<<"No"<<endl;
			continue;
		}
		
		rep(x,20,0) if (nxt[idx][x]!=-1){
			if (arr[nxt[idx][x]].se<=d) idx=nxt[idx][x];
		}
		
		if (c-1<=arr[idx].fi) cout<<"Yes"<<endl;
		else cout<<"No"<<endl;
	}
}

• Subtask 1: 23 / 23
• Subtask 2: 20 / 20
• Subtask 3: 0 / 11
• Subtask 4: 0 / 19
• Subtask 5: 0 / 27