Submission #1027874

#	Time	Username	Problem	Language	Result	Execution time	Memory
1027874		vjudge1	Trampoline (info1cup20_trampoline)	C++17	73 / 100	447 ms	25832 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 200005
#define fi first
#define se second

int r,c,n,timer;

vector<int> v[lim];

vector<pair<int,int>> vy;

int xm[lim],ym[lim];

int tut[lim];

map<int,int> mp;

set<int> st;

map<pair<int,int>,int> dp;

inline int f(int x,int y,int tx,int ty){
	if(x>r || y>c)return 0;
	if(x==tx && y<=ty)return 1;
	if(dp.find({x,y})!=dp.end())return dp[{x,y}];
	int cev=0;
	for(auto a:v[x]){
		if(a<y || a>ty)continue;
		cev+=f(x+1,a,tx,ty);
	}
	return dp[{x,y}]=cev;
}
	
inline void solve(int q){
	FOR{
		st.insert(xm[i]);
	}
	
	for(auto x:st){
		mp[x]=++timer;
		tut[timer]=x;
	}
	
	FOR{
		v[mp[xm[i]]].push_back(ym[i]);
	}
	
	for(int i=1;i<=timer;i++){
		sort(v[i].begin(),v[i].end());
	}
	
	while(q--){
		int x1,y1,x2,y2;
		cin>>x1>>y1>>x2>>y2;
		if(mp.find(x1)==mp.end()){
			cout<<"No"<<'\n';
			continue;
		}
		int tut=lower_bound(v[mp[x1]].begin(),v[mp[x1]].end(),y1)-v[mp[x1]].begin();
		if(tut>=v[mp[x1]].size()){
			cout<<"No"<<'\n';
			continue;
		}
		if(v[mp[x1]][tut]<=y2){
			cout<<"Yes"<<'\n';
		}
		else cout<<"No"<<'\n';
	}
}


int32_t main(){
	faster
	cin>>r>>c>>n;
	FOR{
		cin>>xm[i]>>ym[i];
		vy.push_back({xm[i],ym[i]});
	}
	
	sort(vy.begin(),vy.end());
	
	int q;cin>>q;
	if(q<=5000){
	while(q--){
		int x1,y1,x2,y2;cin>>x1>>y1>>x2>>y2;
		bool stop=0;
		if(x1==x2 && y1<=y2){
			cout<<"Yes"<<'\n';
			continue;
		}
		for(int i=0;i<vy.size();i++){
			if(vy[i].fi<x1){
				continue;
			}
			if(vy[i].fi==x1 && y1<=vy[i].se){
				x1++;
				y1=vy[i].se;
			}
			if(x1==x2 && y1<=y2){
				stop=1;
				break;
			}
		}
		
		if(stop){
			cout<<"Yes"<<'\n';
		}
		else cout<<"No"<<'\n';
		
	}
	}
	else{
		solve(q);
	}
	return 0;
}

Compilation message (stderr)

trampoline.cpp: In function 'void solve(long long int)':
trampoline.cpp:70:9: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |   if(tut>=v[mp[x1]].size()){
      |      ~~~^~~~~~~~~~~~~~~~~~
trampoline.cpp: In function 'int32_t main()':
trampoline.cpp:101:16: 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]
  101 |   for(int i=0;i<vy.size();i++){
      |               ~^~~~~~~~~~

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