Submission #522891

#	Time	Username	Problem	Language	Result	Execution time	Memory
522891		Savu_Stefan_Catalin	Trampoline (info1cup20_trampoline)	C++14	100 / 100	278 ms	18572 KiB

trampoline

#include <iostream>
#include <algorithm>
using namespace std;
int n,t[25][200005],xs,ys,xf,yf,i,j,test,st;
pair<int,int> s[200005];
int cb(int x,int y)
{
    int st=1,dr=n,mij=0,ras=0;
    while (st<=dr)
    {
        mij=(st+dr)/2;
        if (s[mij].first>x) {dr=mij-1;}
        else if (s[mij].first<x) {st=mij+1;}
        else if (s[mij].second<y) {st=mij+1;}
        else {dr=mij-1; ras=mij;}
    }
    return ras;
}
int ascen(int nod,int lvl)
{
    for (int i=19;i>=0;--i)
    {
        if ((1<<i)<=lvl)
        {
            nod=t[i][nod];
            lvl-=(1<<i);
        }
    }
    if (nod==0) return 2000000000;
    return s[nod].second;
}
int main()
{
    ios_base::sync_with_stdio(NULL);
    cin.tie(0);
    cout.tie(0);
    cin>>n>>n>>n;
    for (i=1;i<=n;++i)
    {
        cin>>s[i].first>>s[i].second;
    }
    sort(s+1,s+n+1);
    for (i=1;i<=n;++i)
    {
        t[0][i]=cb(s[i].first+1,s[i].second);
    }
    for (i=1;i<=19;++i)
    {
        for (j=1;j<=n;++j)
        t[i][j]=t[i-1][t[i-1][j]];
    }
    cin>>test;
    for (i=1;i<=test;++i)
    {
        cin>>xs>>ys>>xf>>yf;
        if (xs==xf) {if (ys<=yf) {cout<<"Yes"<<'\n';} else {cout<<"No"<<'\n';} continue;}
        if (xf<xs||yf<ys) {cout<<"No"<<'\n'; continue;}
        st=cb(xs,ys);
        if (st==0) {cout<<"No";}
        else if (ascen(st,xf-1-xs)<=yf) {cout<<"Yes";}
        else {cout<<"No";}
        cout<<'\n';
    }
    return 0;
}

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