제출 #340986

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
340986	2020-12-28 20:42:09	mehrdad_sohrabi	Railway Trip (JOI17_railway_trip)	C++14	100 / 100	300 ms	43748 KiB

railway_trip

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#include <bits/stdc++.h>
/// 500 485
typedef long long int ll;
typedef long double ld;
#define pb push_back
#define pii pair < ll , ll >
#define F first
#define S second
#define endl '\n'
#define int long long
#define sync ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math")
#define kill(x) return cout<<x<<'\n', 0;
using namespace std;
const int N=1e5+100,M=20;
int nxtl[N][M];
int nxtr[N][M];
ll a[N];
vector <int> ja[N];
ll seg[N*4];
void build(ll nod,ll l,ll r){
    if (r-l==1){
        seg[nod]=a[l];
        return ;
    }
    ll mid=(r+l)/2;
    build(nod*2,l,mid);
    build(nod*2+1,mid,r);
    seg[nod]=max(seg[nod*2],seg[nod*2+1]);
}
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 25 / 25
• Subtask 4: 55 / 55