Submission #892927

#	Time	Username	Problem	Language	Result	Execution time	Memory
892927		yuhong	Trampoline (info1cup20_trampoline)	C++17	23 / 100	2077 ms	340520 KiB

trampoline

#include <bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
template <typename T>
using ordered_set = tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;
#define endl '\n'
#define ll long long
#define pb push_back
#define vi vector<int>
#define vll vector<long long>
#define sz(x) (int)x.size()
#define int long long
#define float double
#define all(x) x.begin(),x.end()
#define pii pair<int,int>
#define rep(i,a,b) for (ll i = a; i<b; i++)
#define repo(i,a,b) for (int i = a; i>=b; i--)
#define fi first
#define se second
//int decrow[4] = {-1,0,1,0};
//int deccol[4] = {0,1,0,-1};
//int dp[100001][100001];
//int arr[100001];
int dy[8] = {0,  0, 1, -1, 1, -1 , 1, -1};
int dx[8] = {1, -1, 0,  0, 1, -1, -1,  1};
const int MAXN = 1e6;
const int MOD = 1e9+7;
const int INF = 1e18;
int n,c,r;
int total = 0;
int ans = 0;
vi v;
set<pii> st;
set<pii> stt;
void traverse(int i,int j){
	if(stt.find({i,j})!=stt.end()){
    return;
  }
	stt.insert({i,j});
	if(st.find({i,j}) != st.end()){
		if(i+1>=r && j+1>=c){
			return;
		}
		if(i+1<r){
			traverse(i+1,j);
		}
		if(j+1<c){
			traverse(i,j+1);
		}
		
	}else{
		if(j+1<c){
			traverse(i,j+1);
		}else{
			return;
		}
	}
}
void solve(){
  int t;
  cin>>r>>c>>n;
  for(int i = 0;i<n;i++){
	  int a,b;
	  cin>>a>>b;
	  st.insert({a-1,b-1});
  }
  cin>>t;
  while(t--){
	  int a,b,aa,bb;
	  cin>>a>>b>>aa>>bb;
	  a--,b--,aa--,bb--;
	  stt.clear();
	  traverse(a,b);
	  if(stt.find({aa,bb})!=stt.end()){
		  cout<<"Yes"<<endl;
	  }else{
		  cout<<"No"<<endl;
	  }
  }
}	
 
 
 
int32_t main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
  int q;
  q =1;
  while(q--){
    solve();
  }
  return 0;
}

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