Submission #924051

#	Time	Username	Problem	Language	Result	Execution time	Memory
924051		Warinchai	trapezoid (balkan11_trapezoid)	C++14	5 / 100	146 ms	39712 KiB

trapezoid

#include<bits/stdc++.h>
#define int long long
using namespace std;
int md=30013;
int sec=0;
struct trap{
    int a,b,c,d;
    int id;
    trap(int w=0,int x=0,int y=0,int z=0,int i=0){
        a=w,b=x,c=y,d=z;
        id=i;
    }
    bool operator<(const trap &x){
        if(sec==0)return a<x.a;
        return c<x.c;
    }
};
struct segtree{
    struct node{
        int val,cnt;
        node(int v=0,int cn=0){
            val=v,cnt=cn;
        }
        friend node operator+(node a,node b){
            node c;
            c.val=max(a.val,b.val);
            c.cnt=(a.val==b.val?a.cnt+b.cnt:(a.val>b.val?a.cnt:b.cnt))%md;
            return c;
        }
    };
    node info[1600005];
    void upd(int st,int en,int i,int pos,int val,int cnt){
        if(st>pos||en<pos)return;
        if(st==en)return void(info[i]=node(val,cnt));
        int m=(st+en)/2;
        upd(st,m,i*2,pos,val,cnt);
        upd(m+1,en,i*2+1,pos,val,cnt);
        info[i]=info[i*2]+info[i*2+1];
    }
    node fans(int st,int en,int i,int l,int r){
        if(st>r||en<l)return node();
        if(st>=l&&en<=r)return info[i];
        int m=(st+en)/2;
        return fans(st,m,i*2,l,r)+fans(m+1,en,i*2+1,l,r);
    }
}tr;
queue<pair<pair<int,int>,pair<int,int> >>q;
vector<trap>vb;
vector<trap>v;
vector<int>ord;
int num[100005][2];
int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n;cin>>n;
    for(int i=0;i<n;i++){
        int a,b,c,d;
        cin>>a>>b>>c>>d;
        v.push_back(trap(a,b,c,d,i));
        vb.push_back(trap(a,b,c,d,i));
        ord.push_back(a);
        ord.push_back(b);
        ord.push_back(c);
        ord.push_back(d);
    }
    sort(ord.begin(),ord.end());
    sort(v.begin(),v.end());
    sec=1;
    sort(vb.begin(),vb.end());
    int cur=0;
    for(int i=0;i<v.size();i++){
        while(cur<n&&vb[cur].b<v[i].a){
            int pos=lower_bound(ord.begin(),ord.end(),vb[cur].d)-ord.begin()+1;
            tr.upd(1,4*n,1,pos,num[vb[cur].id][0],num[vb[cur].id][1]);
            cur++;
        }
        int pos=lower_bound(ord.begin(),ord.end(),v[i].c-1)-ord.begin()+1;
        auto temp=tr.fans(1,4*n,1,1,pos);
        num[v[i].id][0]=temp.val+1;
        num[v[i].id][1]=temp.val==0?1:temp.cnt;
        //cerr<<v[i].id<<" "<<num[v[i].id][0]<<" "<<num[v[i].id][1]<<"\n";
    }
    while(cur<n){
        int pos=lower_bound(ord.begin(),ord.end(),vb[cur].d)-ord.begin()+1;
        tr.upd(1,4*n,1,pos,num[vb[cur].id][0],num[vb[cur].id][1]);
        cur++;
    }
    cout<<tr.info[1].val<<" "<<tr.info[1].cnt;
}

Compilation message (stderr)

trapezoid.cpp: In function 'int32_t main()':
trapezoid.cpp:71:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<trap>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   71 |     for(int i=0;i<v.size();i++){
      |                 ~^~~~~~~~~

• Subtask 1: 5 / 100