Submission #501742

#	Time	Username	Problem	Language	Result	Execution time	Memory
501742		talant117408	Financial Report (JOI21_financial)	C++17	5 / 100	332 ms	12348 KiB

Main

/*
    Code written by Talant I.D.
*/
 
#include <bits/stdc++.h>
//~ #include <ext/pb_ds/assoc_container.hpp>
 
//~ using namespace __gnu_pbds;
using namespace std;
 
typedef long long ll;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;
//~ typedef tree <ll, null_type, less_equal <ll>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
 
#define precision(n) fixed << setprecision(n)
#define pb push_back
#define ub upper_bound
#define lb lower_bound
#define mp make_pair
#define eps (double)1e-9
#define PI 2*acos(0.0)
#define endl "\n"
#define sz(v) ll((v).size())
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
#define do_not_disturb ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define OK cout << "OK" << endl;
 
const ll mod = 998244353 ;
 
ll mode(ll a) {
    a %= mod;
    while (a < 0) {
        a += mod;
    }
    return a;
}
 
ll subt(ll a, ll b) {
    return mode(mode(a)-mode(b));
}
 
ll add(ll a, ll b) {
    return mode(mode(a)+mode(b));
}
 
ll mult(ll a, ll b) {
    return mode(mode(a)*mode(b));
}
 
ll binpow(ll a, ll b) {
    ll res = 1;
    while (b) {
        if (b&1) res = mult(res, a);
        a = mult(a, a);
        b >>= 1;
    }
    return res;
}

const int N = 3e5+7;
int ans = 1;
int tree[N*4], order[N];
vector <pii> sorted;
int n, d;

void update(int v, int l, int r, int pos, int val) {
    if (l == r) {
        tree[v] = val;
        return;
    }
    int mid = (l+r) >> 1;
    if (pos <= mid) update(v*2, l, mid, pos, val);
    else update(v*2+1, mid+1, r, pos, val);
    tree[v] = max(tree[v*2], tree[v*2+1]);
}

int get(int v, int l, int r, int ql, int qr) {
    if (l > qr || ql > r) return 0;
    if (ql <= l && r <= qr) return tree[v];
    int mid = (l+r) >> 1;
    return max(get(v*2, l, mid, ql, qr), get(v*2+1, mid+1, r, ql, qr));
}

int main() {
    do_not_disturb
    
    cin >> n >> d;
    vector <int> v(n);
    for (auto &to : v) cin >> to;
    for (int i = 0; i < n; i++) {
        sorted.pb(mp(v[i], i));
    }
    sort(all(sorted));
    for (int i = 0; i < n; i++) {
        order[sorted[i].second] = i+1;
    }
    
    for (int i = n-1; i >= 0; i--) {
        if (i + d + 1 < n) {
            update(1, 1, n, order[i + d + 1], 0);
        }
        auto it = lb(all(sorted), mp(v[i]+1, 0))-sorted.begin();
        if (it == n) {
            update(1, 1, n, order[i], 1);
            continue;
        }
        update(1, 1, n, order[i], get(1, 1, n, it+1, n)+1);
        ans = max(ans, get(1, 1, n, order[i], order[i]));
    }
    cout << ans;
    
    return 0;
}

• Subtask 1: 0 / 14
• Subtask 2: 0 / 14
• Subtask 3: 0 / 20
• Subtask 4: 0 / 12
• Subtask 5: 5 / 5
• Subtask 6: 0 / 35