Submission #525241

#	Time	Username	Problem	Language	Result	Execution time	Memory
525241		Khizri	Trampoline (info1cup20_trampoline)	C++17	43 / 100	439 ms	28724 KiB

trampoline

#include <bits/stdc++.h>
using namespace std;
//------------------------------DEFINE------------------------------
//******************************************************************
#define IOS ios_base::sync_with_stdio(false); cin.tie(0),cout.tie(0)
#define ll long long
#define pb push_back
#define F first
#define S second
#define INF 1e18
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define pii pair<int,int>
#define pll pair<ll,ll>
#define OK cout<<"Ok"<<endl;
#define MOD (ll)(1e9+7)
#define endl "\n"
//******************************************************************
//----------------------------FUNCTION------------------------------
//******************************************************************
ll gcd(ll a,ll b){
    if(a>b) swap(a,b);
    if(a==0) return a+b;
    return gcd(b%a,a);
}
ll lcm(ll a,ll b){
    return a/gcd(a,b)*b;
}
bool is_prime(ll n){
    ll k=sqrt(n);

    if(n==2) return true;
    if(n<2||n%2==0||k*k==n) return false;
    for(int i=3;i<=k;i+=2){
        if(n%i==0){
            return false;
        }
    }
    return true;
}
//*****************************************************************
//--------------------------MAIN-CODE------------------------------
const int mxn=2e5+5;
int t=1,n,m,k,q;
set<int>st[mxn];
map<int,set<int>>mp;
bool dfs(int a,int b,int x,int y){
    if(b>y||a>x) return false;
    if(a>n||b>m) return false;
    if(a==x){
        if(b<=y){
            return true;
        }
        else{
            return false;
        }
    }
    auto it=st[a].lower_bound(b);
    if(it==st[a].end()) return false;
    b=*it;
    return dfs(a+1,b,x,y);
}
void solve2(){
    cin>>q;
    while(q--){
        int a,b,x,y;
        cin>>a>>b>>x>>y;
        auto it=mp[a].lower_bound(b);
        if(it==st[a].end()){
            cout<<"No"<<endl;
            continue;
        }
        if(*it<=y){
            cout<<"Yes"<<endl;
        }
        else{
            cout<<"No"<<endl;
        }
    }
}
void solve(){
    cin>>n>>m>>k;
    for(int i=1;i<=k;i++){
        int a,b;
        cin>>a>>b;
        st[a].insert(b);
        mp[a].insert(b);
    }
    if(n<=2500&&m<=2500){

    }
    else{
        solve2();
        return;
    }
    cin>>q;
    while(q--){
        int a,b,x,y;
        cin>>a>>b>>x>>y;
        if(dfs(a,b,x,y)){
            cout<<"Yes"<<endl;
        }
        else{
            cout<<"No"<<endl;
        }
    }
}
int main(){
    IOS;
    //cin>>t;
    while(t--){
        solve();
    }
    return 0;
}

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