Submission #1174832

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1174832	2025-03-27 12:30:26	Warinchai	Two Antennas (JOI19_antennas)	C++20	0 / 100	292 ms	65240 KiB

antennas

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#include<bits/stdc++.h>
#define int long long
using namespace std;
vector<pair<int,int>>add[400005];
vector<pair<int,int>>del[400005];
int inf=1e18+5;
struct segtreemx{
    struct node{
        int h,ans;
        node(int _ans=-inf,int _h=-inf){
            ans=_ans,h=_h;
        }
        friend node operator+(node a,node b){
            return node(max(a.ans,b.ans),max(a.h,b.h));
        }
    };
    node info[800005];
    int lz[800005];
    void push(int st,int en,int i){
        if(lz[i]==inf)return;
        //cerr<<st<<" "<<en<<" "<<i<<"\n";
        info[i].ans=max(info[i].ans,info[i].h-lz[i]);
        if(st!=en)lz[i*2]=min(lz[i*2],lz[i]),lz[i*2+1]=min(lz[i*2+1],lz[i]);
        lz[i]=inf;
    }
    void upd(int st,int en,int i,int pos,int val){
        push(st,en,i);
        if(st>pos||en<pos)return;
        if(st==en)return info[i]=node(-inf,val),void();
        int m=(st+en)/2;
 
 
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• Subtask 1: 0 / 2
• Subtask 2: 0 / 11
• Subtask 3: 0 / 22
• Subtask 4: 0 / 65