Submission #892934

#	Time	Username	Problem	Language	Result	Execution time	Memory
892934		Xiaoyang	Trampoline (info1cup20_trampoline)	C++17	100 / 100	1010 ms	84816 KiB

trampoline

#include<bits/stdc++.h>
using namespace std;
 
typedef long long ll;
 
#define fi first
#define se second
#define pii pair<int,int>
#define pll pair<long long,long long>
#define pb push_back
#define debug(x) cout<<#x<<"="<<x<<endl
#define pq priority_queue
#define inf 1ll<<60
#define rep(i,a,b) for (ll i=a;i<(b);i++)
#define MP make_pair
#define SZ(x) (int(x.size()))
#define mod 1000000007
#define ALL(x) x.begin(),x.end()
#define endl "\n"
void inc(ll &a,ll b) {a=(a+b)%mod;}
void dec(ll &a,ll b) {a=(a-b+mod)%mod;}
int prod(ll a,ll b) {return ll(a)*ll(b)%mod;}
int lowbit(ll x) {return x&(-x);}
ll p0w(ll base,ll p) {ll ret=1;while(p>0){if (p%2ll==1ll) ret=ret*base%mod;base=base*base%mod;p/=2ll;}return ret;}

const ll lg=22;
const ll maxn=2e5+5;
ll twok[maxn][lg];
ll row[maxn],col[maxn];
map<ll,vector<ll>>mp;
map<pll,ll>id;
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    ll r,c,n;cin>>r>>c>>n;
    rep(i,1,n+1){
        cin>>row[i]>>col[i];
        mp[row[i]].pb(col[i]);
        id[MP(row[i],col[i])]=i;
    }
    for(auto x:mp){
        sort(ALL(mp[x.fi]));
        //for(auto y:mp[x.fi])cout<<y<<" ";
        //cout<<endl;
    }
    
    rep(i,1,n+1){
        auto it=lower_bound(ALL(mp[row[i]+1]),col[i]);
        if(it==mp[row[i]+1].end())continue;
        twok[i][0]=id[MP(row[i]+1,*it)];
    }
    rep(j,1,lg){
        rep(i,1,n+1){
            twok[i][j]=twok[twok[i][j-1]][j-1];
        }
    }
    /*
    rep(i,1,n+1){
        rep(j,0,lg){
            cout<<twok[i][j]<<" ";
        }
        cout<<endl;
    }
    */
    ll t;cin>>t;
    while(t--){
        ll x,y,xx,yy;
        cin>>x>>y>>xx>>yy;
        ll diff=xx-x;
        if(xx<x or yy<y)cout<<"No"<<endl;
        else if(diff==0)cout<<"Yes"<<endl;
        else{
            ll u;
            auto it=lower_bound(ALL(mp[x]),y);
            if(it==mp[x].end())u=0;
            else u=id[MP(x,*it)];
            diff--;
            rep(i,0,lg){
                if(diff&(1<<i)){
                    u=twok[u][i];
                }
            }
            if(u==0 or col[u]>yy)cout<<"No"<<endl;
            else cout<<"Yes"<<endl;
        }
    }
    return 0;
}

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