제출 #969430

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
969430	2024-04-25 06:53:21	AliHasanli	Index (COCI21_index)	C++17	60 / 110	2530 ms	46540 KiB

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#include<bits/stdc++.h>
using namespace std;
int a[200005];
vector<int>seg[800005];
void build(int no,int l,int r)
{
    //cout<<"B "<<no<<" "<<l<<" "<<r<<endl;
    if(l==r){seg[no].push_back(a[l]);return;}
    build(2*no,l,(l+r)/2);
    build(2*no+1,(l+r)/2+1,r);
    seg[no].resize(seg[no*2].size()+seg[no*2+1].size());
    merge(seg[2*no+1].begin(), seg[2*no+1].end(), seg[2*no].begin(), seg[2*no].end(), seg[no].begin());
}
int query(int n,int l,int r,int ql,int qr,int h)
{
    //cout<<"A "<<n<<endl;
    if(l>r || ql>qr || r<ql || qr<l)return 0;
    if(ql<=l && r<=qr)
    {
        if(lower_bound(seg[n].begin(),seg[n].end(),h)==seg[n].end())return 0;
        int index=lower_bound(seg[n].begin(),seg[n].end(),h)-seg[n].begin();
        return seg[n].size()-index;
    }
    return query(2*n,l,(l+r)/2,ql,qr,h)+query(2*n+1,(l+r)/2+1,r,ql,qr,h);
}
int ans(int a,int b,int n)
{
    int answer=0;
    int l=1,r=200000;
    int mid;
 
 
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• Subtask 1: 20 / 20
• Subtask 2: 40 / 40
• Subtask 3: 0 / 50