Submission #921341

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
921341	2024-02-03 17:53:19	hotboy2703	Constellation 3 (JOI20_constellation3)	C++14	100 / 100	568 ms	109668 KiB

constellation3

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#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define pll pair <ll,ll>
#define fi first
#define se second
#define sz(a) (ll((a).size()))
#define MASK(i) (1LL<<(i))
#define BIT(mask,i) (((mask) >> (i))&1LL)
const ll MAXN = 2e5;
const ll MAXK = 18;
ll n,m;
ll a[MAXN + 1];
namespace max_height{
    ll sp[MAXK][MAXN+1];
    ll best(ll x,ll y){
        if (a[x]>a[y])return x;
        return y;
    }
    void init(){
        for (ll i = 1;i <= n; i++){
            sp[0][i] = i;
        }
        for (ll j = 1;j < MAXK;j ++){
            for (ll i = 1;i + MASK(j) - 1 <= n;i ++){
                sp[j][i] = best(sp[j-1][i],sp[j-1][i+MASK(j-1)]);
            }
        }
    }
    ll query(ll l,ll r){
 
 
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• Subtask 1: 14 / 14
• Subtask 2: 21 / 21
• Subtask 3: 65 / 65