Submission #753110

#	Time	Username	Problem	Language	Result	Execution time	Memory
753110		DJeniUp	Trampoline (info1cup20_trampoline)	C++17	100 / 100	1756 ms	87672 KiB

trampoline

#include "bits/stdc++.h"
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("O3")
 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll,ll>pairll;
typedef pair<ll,ull>pairull;
typedef pair<ll,pairll>pair3l;
typedef long double ld;
typedef pair<ld,ll>pairld;
 
#define fr first
#define sc second
#define pb push_back
#define endl '\n'
#define N 100007
//#define MOD 998244353
#define INF 100000000000007
#define eps 0.0000000001
 
ll n,m,k,h,p[36][2*N];
 
struct D{
    ll l,r;
}d[2*N];
 
map<ll,ll>mp;
 
vector<pairll>v[2*N];
 
bool mcp(D d1, D d2){
    if(d1.l!=d2.l)return d1.l<d2.l;
    return d1.r<d2.r;
}
 
ll P(ll x,ll y){
    for(int i=30;i>=0;i--){
        ll g=p[i][x];
        if(d[g].l<y)x=g;
    }
    return x;
}
 
int main(){
    
    cin>>n>>m>>k;
    for(int i=1;i<=k;i++){
        cin>>d[i].l>>d[i].r;
    }
    sort(d+1,d+1+k,mcp);
    for(int i=1;i<=k;i++){
        if(d[i].l!=d[i-1].l){
            h++;
            mp[d[i].l]=h;
        }
        v[h].pb({d[i].r,i});
    }
    for(int i=1;i<=k;i++){
        if(mp[d[i].l+1]==0){
            p[0][i]=k+1;
        }else{
            ll l=0;
            ll nm=mp[d[i].l+1];
            ll r=v[nm].size();
            while(l<r){
                ll m1=(l+r)/2;
                if(v[nm][m1].fr>=d[i].r)r=m1;
                else l=m1+1;
            }
            if(r==v[nm].size())p[0][i]=k+1;
            else p[0][i]=v[nm][r].sc;
        }
    }
    p[0][k+1]=k+1;
    for(int i=1;i<=30;i++){
        for(int j=1;j<=k+1;j++){
            p[i][j]=p[i-1][p[i-1][j]];
        }
    }
    d[k+1].l=INF;
    ll q;
    cin>>q;
    for(int i=1;i<=q;i++){
        ll x1,y1,x2,y2;
        cin>>x1>>y1>>x2>>y2;
        if(y1>y2 || x1>x2){
            cout<<"No"<<endl;
        }
        else if(x1==x2){
            cout<<"Yes"<<endl;
        }else{
            if(mp[x1]==0){
                cout<<"No"<<endl;
                continue;
            }
            ll l=0;
            ll nm=mp[x1];
            ll r=v[nm].size();
            while(l<r){
                ll m1=(l+r)/2;
                if(v[nm][m1].fr>=y1){
                    r=m1;
                }else l=m1+1;
            }
            h=0;
            if(r==v[nm].size())h=k+1;
            else h=v[nm][r].sc;
            h=P(h,x2);
            if(d[h].l==x2-1 && d[h].r<=y2)cout<<"Yes"<<endl;
            else cout<<"No"<<endl;
        }
    }
 
    return 0;
}

Compilation message (stderr)

trampoline.cpp: In function 'int main()':
trampoline.cpp:73:17: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |             if(r==v[nm].size())p[0][i]=k+1;
      |                ~^~~~~~~~~~~~~~
trampoline.cpp:109:17: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  109 |             if(r==v[nm].size())h=k+1;
      |                ~^~~~~~~~~~~~~~

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