Submission #1029313

#	Time	Username	Problem	Language	Result	Execution time	Memory
1029313		elotelo966	Trampoline (info1cup20_trampoline)	C++17	0 / 100	667 ms	108104 KiB

trampoline

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,avx2,fma")
#include <bits/stdc++.h>
using namespace std;
 
#define int long long
#define OYY LLONG_MAX
#define mod 998244353
#define faster ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define FOR for(int i=1;i<=n;i++)
#define mid (start+end)/2
#define lim 1000005
#define fi first
#define se second

vector<pair<int,int>> v[lim];

int xm[lim],ym[lim];

map<int,int> mp;

set<int> st;

int timer,l;

int up[lim][35];

int32_t main(){
	faster
	int r,c,n;cin>>r>>c>>n;
	l=ceil(log2(n));
	FOR{
		cin>>xm[i]>>ym[i];
		st.insert(xm[i]);
	}
	
	for(auto x:st){
		mp[x]=++timer;
	}
	
	FOR{
		v[mp[xm[i]]].push_back({ym[i],i});
	}
	
	for(int i=1;i<=timer;i++){
		sort(v[i].begin(),v[i].end());
	}
	
	FOR{
		if(mp.find(xm[i]+1)==mp.end())continue;
		int tut=lower_bound(v[mp[xm[i]+1]].begin(),v[mp[xm[i]+1]].end(),make_pair(ym[i],0ll))-v[mp[xm[i]+1]].begin();
		if(tut>=v[mp[xm[i]+1]].size())continue;
		up[i][0]=v[mp[xm[i]+1]][tut].se;
	}
	
	for(int i=1;i<=l;i++){	
		for(int node=1;node<=timer;node++){
			up[node][i]=up[up[node][i-1]][i-1];
		}
	}
	
	/*for(int i=1;i<=timer;i++){
		for(int j=0;j<=l;j++){
			cout<<up[i][j]<<" ";
		}
		cout<<'\n';
	}*/
	
	int q;cin>>q;
	while(q--){
		int x1,y1,x2,y2;cin>>x1>>y1>>x2>>y2;
		if(mp.find(x1)==mp.end() || x1==x2){
			if(y1<=y2)cout<<"Yes"<<'\n';
			else cout<<"No"<<'\n';
			continue;
		}
		int node=lower_bound(v[mp[x1]].begin(),v[mp[x1]].end(),make_pair(y1,0ll))-v[mp[x1]].begin();
		if(node>=v[mp[x1]].size()){
			cout<<"No"<<'\n';
			continue;
		}
		node=v[mp[x1]][node].se;
		for(int i=l;i>=0;i--){
			if(!up[node][i] && up[node][i]<x2){
				node=up[node][i];
			}
		}
		
		if(ym[up[node][0]]<=y2){
			cout<<"Yes"<<'\n';
		}
		else cout<<"No"<<'\n';
		
	}
	
	return 0;
}

Compilation message (stderr)

trampoline.cpp: In function 'int32_t main()':
trampoline.cpp:52:9: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |   if(tut>=v[mp[xm[i]+1]].size())continue;
      |      ~~~^~~~~~~~~~~~~~~~~~~~~~~
trampoline.cpp:78:10: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |   if(node>=v[mp[x1]].size()){
      |      ~~~~^~~~~~~~~~~~~~~~~~

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