Submission #1197098

#	Time	Username	Problem	Language	Result	Execution time	Memory
1197098		SSSM	Global Warming (CEOI18_glo)	C++20	10 / 100	244 ms	13936 KiB

glo

#include <bits/stdc++.h>

/*
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC target ("avx2")
*/

using namespace std;

/*
#include <ext/pb_ds/assoc_container.hpp> 
#include <ext/pb_ds/tree_policy.hpp> 
using namespace __gnu_pbds;
template<class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
*/

#define F first
#define S second
#define pb push_back
#define FIO freopen("input.txt", "r", stdin);freopen("output.txt", "w", stdout)
#define md(a) ((a%mod+mod)%mod)
#define all(a) a.begin(), a.end()
#define MP make_pair
#define lc (id<<1)
#define rc (lc|1)
#define mid (l+r)/2
#define kill(a) cout << a << "\n", exit(0)
#define SZ(a) (ll)a.size()
typedef pair<int,int> pii;
typedef pair<long long ,long long> pll;
typedef long long ll;
typedef long double ld;
typedef vector<vector<ll>> matrix;
mt19937_64  rng(chrono::steady_clock::now().time_since_epoch().count());

ll const maxn=2e5+10, mod=1e9+7, INF=1e18, LOG=20, sq=65;

ll poww(ll a, ll b, ll mod) {
 if (b == 0) return 1;
 return 1 * poww(1 * a * a % mod, b / 2, mod) * ((b % 2 == 1) ? a : 1) % mod;
}

ll n, k, seg[2][maxn<<2], A[maxn], N;
vector<ll> comp;

ll GI(ll a)
{
	return lower_bound(all(comp), a)-comp.begin();
}

void Upd(ll ind, ll p, ll x, ll l=0, ll r=N, ll id=1)
{
	if(l==r-1)
	{
		seg[ind][id]=max(seg[ind][id], x);
		return;
	}
	if(p<mid) Upd(ind, p, x, l, mid, lc);
	else Upd(ind, p, x, mid, r, rc);
	seg[ind][id]=max(seg[ind][lc], seg[ind][rc]);
}

ll Get(ll ind, ll s, ll e, ll l=0, ll r=N, ll id=1)
{
	if(l>=e || r<=s) return -INF;
	if(s<=l && r<=e) return seg[ind][id];
	return max(Get(ind, s, e, l, mid, lc), Get(ind, s, e, mid, r, rc));
}

int main()
{
	ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);

	cin>>n>>k;
	for(ll i=1;i<=n;i++) {
		cin>>A[i];
		comp.pb(A[i]);
		comp.pb(A[i]+k);
	}

	sort(all(comp));
	comp.resize(unique(all(comp))-comp.begin());
	N=SZ(comp);
	for(ll i=1;i<=n;i++)
	{
		Upd(0, GI(A[i]), max(Get(0, 0, GI(A[i])), Get(1, 0, GI(A[i]+k)))+1);
		Upd(1, GI(A[i]), Get(1, 0, GI(A[i]))+1);
	}
	cout<<max(Get(0, 0, N), Get(1, 0, N))<<"\n";
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 13
• Subtask 4: 10 / 10
• Subtask 5: 0 / 20
• Subtask 6: 0 / 17
• Subtask 7: 0 / 25