Submission #931191

#	Time	Username	Problem	Language	Result	Execution time	Memory
931191		AtabayRajabli	Global Warming (CEOI18_glo)	C++17	0 / 100	149 ms	10680 KiB

glo

#include <bits/stdc++.h>

// author : a1abay

#define pb          push_back
#define all(v)      v.begin(), v.end()
#define int         ll
#define gcd(a, b)   __gcd(a, b)
#define lcm(a, b)   (a*b / (__gcd(a, b)))
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>

typedef long long           ll;
const int inf =             1e9 + 7;
const int inff =            1e18 + 7;
const int sz =              2e5 + 5;
using namespace             std;

int n, x;
vector<int> v;
int a[sz];

struct BIT
{
    vector<int> t;
    void init(){t.resize(sz, 0);}
    int get(int i)
    {
        int r = 0;
        for(; i > 0; i -= i & -i)r += t[i];
        return r;
    }
    void upd(int i, int x)
    {
        for(; i < sz; i += i & -i)t[i] = x;
    }
};

int ind(int x)
{
    return upper_bound(all(v), x) - v.begin();
}

signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin >> n >> x;

    for(int i = 1; i <= n; i++)
    {
        cin >> a[i];
        v.pb(a[i]);
        v.pb(a[i] + x);
    }

    sort(all(v));
    v.erase(unique(all(v)), v.end());

    BIT l, r;
    l.init();
    r.init();
    for(int i = 1; i <= n; i++)r.upd(ind(a[i] + x), 1);

    int ans = 1;
    for(int i = 1; i <= n; i++)
    {
        l.upd(ind(a[i]), 1);
        r.upd(ind(a[i]), -1);
        int lx = l.get(ind(a[i]))   ;
        int rx = r.get(ind(v.back())) - r.get(ind(a[i]));
        ans = max(ans, lx + rx);
    }
    cout << ans;
}

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