Submission #893124

#	Time	Username	Problem	Language	Result	Execution time	Memory
893124		jellybean	Trampoline (info1cup20_trampoline)	C++17	73 / 100	2025 ms	15952 KiB

trampoline

#include <bits/stdc++.h>
using namespace std;
#define int long long
 
vector<int>arr[2505];
pair<int,int>arr1[200005];
 
signed main(){
	ios::sync_with_stdio(0); cin.tie(0);
	
	int r,c,n; cin>>r>>c>>n;
	
	/*if(r<=2500 and c<=2500){
		for(int i=0; i<n; i++){
			int a,b; cin>>a>>b;
			arr[a].push_back(b); //row a has a green tramp at b
		}
		for(int i=0; i<2505; i++) sort(arr[i].begin(), arr[i].end());
		
		int t; cin>>t;
		while(t--){
			int x1,y1,x2,y2; cin>>x1>>y1>>x2>>y2;
			if(x2<x1) {cout<<"No\n"; continue;}
			int row=x1, col=y1;
			bool f=0;
			while(row!=x2){
				auto it = lower_bound(arr[row].begin(), arr[row].end(), col);
				if(it==arr[row].end()){f=1; cout<<"No\n"; break;}
				col = *it;
				row++;
			}
			if(f) continue;
			if(y2<col) cout<<"No\n";
			else cout<<"Yes\n";
		}
		return 0;
	} */
	
	for(int i=0; i<n; i++) cin>>arr1[i].first>>arr1[i].second;
	sort(arr1, arr1+n);
	//for(int i=0;i<n; i++) cout<<arr1[i].first<<" "<<arr1[i].second<<"\n";
	int t; cin>>t;
	while(t--){
		int x1,y1,x2,y2; cin>>x1>>y1>>x2>>y2;
		int row=x1, col=y1;
		bool f=0;
		pair<int,int> p = {row,col};
		while(row!=x2){
			auto it = lower_bound(arr1, arr1+n, p);
			if(it==arr1+n){cout<<"No\n"; f=1; break;}
			p = *it;
			if(p.first != row or p.second > y2){cout<<"No\n"; f=1; break;}
			row++; p.first=row;
		}
		if(f) continue;
		if(p.second>y2) cout<<"No\n";
		else cout<<"Yes\n";
	}
		
	
	return 0;
}

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