Submission #470986

#	Time	Username	Problem	Language	Result	Execution time	Memory
470986		NhatMinh0208	Trampoline (info1cup20_trampoline)	C++17	100 / 100	1324 ms	62864 KiB

trampoline

#ifndef CPL_TEMPLATE
#define CPL_TEMPLATE
/*
	Normie's Template v2.5
	Changes:
    Added warning against using pragmas on USACO.
*/
// Standard library in one include.
#include <bits/stdc++.h>
using namespace std;
 
// ordered_set library.
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set(el) tree<el,null_type,less<el>,rb_tree_tag,tree_order_statistics_node_update>
 
// AtCoder library. (Comment out these two lines if you're not submitting in AtCoder.) (Or if you want to use it in other judges, run expander.py first.)
//#include <atcoder/all>
//using namespace atcoder;

//Pragmas (Comment out these three lines if you're submitting in szkopul or USACO.)
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast,unroll-loops,tree-vectorize")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
 
//File I/O.
#define FILE_IN "cseq.inp"
#define FILE_OUT "cseq.out"
#define ofile freopen(FILE_IN,"r",stdin);freopen(FILE_OUT,"w",stdout)
 
//Fast I/O.
#define fio ios::sync_with_stdio(0);cin.tie(0)
#define nfio cin.tie(0)
#define endl "\n"
 
//Order checking.
#define ord(a,b,c) ((a>=b)and(b>=c))
 
//min/max redefines, so i dont have to resolve annoying compile errors.
#define min(a,b) (((a)<(b))?(a):(b))
#define max(a,b) (((a)>(b))?(a):(b))

// Fast min/max assigns to use with AVX.
// Requires g++ 9.2.0.
template<typename T>
__attribute__((always_inline)) void chkmin(T& a, const T& b) {
    a=(a<b)?a:b;
}

template<typename T>
__attribute__((always_inline)) void chkmax(T& a, const T& b) {
    a=(a>b)?a:b;
}
 
//Constants.
#define MOD (ll(998244353))
#define MAX 300001
#define mag 320
const long double PI=3.14159265358979;
 
//Pairs and 3-pairs.
#define p1 first
#define p2 second.first
#define p3 second.second
#define fi first
#define se second
#define pii(element_type) pair<element_type,element_type>
#define piii(element_type) pair<element_type,pii(element_type)>
 
//Quick power of 2.
#define pow2(x) (ll(1)<<x)
 
//Short for-loops.
#define ff(i,__,___) for(int i=__;i<=___;i++)
#define rr(i,__,___) for(int i=__;i>=___;i--)
 
//Typedefs.
#define bi BigInt
typedef long long ll;
typedef long double ld;
typedef short sh;

// Binpow and stuff
ll BOW(ll a, ll x, ll p)
{
	if (!x) return 1;
	ll res=BOW(a,x/2,p);
	res*=res;
	res%=p;
	if (x%2) res*=a;
	return res%p;
}
ll INV(ll a, ll p)
{
	return BOW(a,p-2,p);
}
//---------END-------//
#endif
vector<int> vec;
int r,c,n,m,i,j,k,t,t1,u,v,a,b;
int x[200001],y[200001];
int ordp[200001];
int nxt[200001][20];
int sx,sy,tx,ty;
map<int,vector<int>> mp;
map<int,int> ord;
int main()
{
	fio;
    cin>>r>>c>>n;
    for (i=1;i<=n;i++)
    {
        cin>>x[i]>>y[i];
        mp[x[i]].push_back(i);
    }
    u=0;
    for (auto& g : mp) {
        sort(g.se.begin(),g.se.end(),[](int a, int b){
            return (y[a]<y[b]);
        });
        u++;
        ord[g.fi]=u;
        vec.push_back(g.fi);
        for (auto gg : g.se) ordp[gg]=u;
    }
    for (j=0;j<20;j++) {
        if (j==0) {
            for (i=1;i<=n;i++) {
                u=ordp[i];
                if (u==vec.size() || vec[u]-vec[u-1]>1) nxt[i][j]=-1;
                else {
                    auto it =((lower_bound(mp[vec[u]].begin(),mp[vec[u]].end(),i,[](int a, int b){
                        return (y[a]<y[b]);
                    })));
                    if (it==mp[vec[u]].end()) nxt[i][j]=-1;
                    else nxt[i][j]=(*it);
                }
            }
        }
        else {
            for (i=1;i<=n;i++) {
                if (nxt[i][j-1]==-1) nxt[i][j]=-1;
                else nxt[i][j]=nxt[nxt[i][j-1]][j-1];
            }
        }
    }
    cin>>m;
    for (i=1;i<=m;i++) {
        cin>>sx>>sy>>tx>>ty;
        if (sx>tx || sy>ty) {
            cout<<"No\n";
            continue;
        }
        if (sx == tx) {
            cout<<"Yes\n";
            continue;
        }
        u=ord[sx];
        v=ord[tx-1];
        if (u==0 || v==0) {
            cout<<"No\n";
            continue;
        }
        y[0]=sy;
        // for (auto g : mp[sx]) {
        //     cout<<g<<" ";
        // }
        // cout<<"\n";
        auto it=lower_bound(mp[sx].begin(),mp[sx].end(),0,[](int a, int b){
            return (y[a]<y[b]);
        });
        if (it==mp[sx].end()) {
            cout<<"No\n";
            continue;
        }
        a = (*it);
        for (j=19;j>=0;j--) {
            if (a==-1) break;
            else if (u+(1<<j)<=v) {
                u+=(1<<j);
                a=nxt[a][j];
            }
        }
        if (a==-1 || y[a]>ty) {
            cout<<"No\n";
            continue;
        } else {
            cout<<"Yes\n";
            continue;
        }
    }
}
// Normie28;

Compilation message (stderr)

trampoline.cpp:23: warning: ignoring '#pragma comment ' [-Wunknown-pragmas]
   23 | #pragma comment(linker, "/stack:200000000")
      | 
trampoline.cpp: In function 'int main()':
trampoline.cpp:131:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  131 |                 if (u==vec.size() || vec[u]-vec[u-1]>1) nxt[i][j]=-1;
      |                     ~^~~~~~~~~~~~

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