Submission #546005

#	Time	Username	Problem	Language	Result	Execution time	Memory
546005		Zhora_004	Financial Report (JOI21_financial)	C++17	28 / 100	4108 ms	1048576 KiB

Main

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <cmath>
#include <algorithm>
#include <vector>
#include <set>
#include <unordered_set>
#include <queue>
#include <deque>
#include <string>
#include <sstream>
#include <iomanip>
#include <map>
#include <unordered_map>
#include <stack>
#include <cstdio>
#include <climits>
#include <tuple>
#include <ctime>
#include <cstring>
#include <numeric>
#include <functional>
#include <chrono>
#include <cassert>
#include <bitset>
//#include <bit>
//#include <ranges>
//#include <numbers>
#define itn int
#define sacnf scanf
#define sz(a) ((int)((a).size()))
// printf("%.10f\n", ans);
using ll = long long;
using namespace std;
const ll mod = 1e9 + 7;
const int N = 1e5 + 1, inf = 1e9;

void compress(int& n, vector<int>& v)
{
    vector<int> tmp = v;
    sort(tmp.begin(), tmp.end());
    map<int, int> mp;
    int num = 1;
    for (int i = 1; i <= n; i++) if (mp.find(tmp[i]) == mp.end()) mp[tmp[i]] = num++;
    for (int i = 1; i <= n; i++) v[i] = mp[v[i]];
}

int find_max(vector<int>& segtree, int l, int r, int u, int tl, int tr)
{
    if (l > r) return 0;
    if (tl > r || tr < l) return INT_MIN;
    if (l <= tl && tr <= r) return segtree[u];
    int tm = (tl + tr) >> 1;
    return max(find_max(segtree, l, r, u * 2 + 1, tl, tm), find_max(segtree, l, r, u * 2 + 2, tm + 1, tr));
}

void modify(vector<int>& segtree, int id, int v, int u, int tl, int tr)
{
    if (tl == tr) segtree[u] = v;
    else
    {
        int tm = (tl + tr) >> 1;
        if (id <= tm) modify(segtree, id, v, u * 2 + 1, tl, tm);
        else modify(segtree, id, v, u * 2 + 2, tm + 1, tr);
        segtree[u] = max(segtree[u * 2 + 1], segtree[u * 2 + 2]);
    }
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    // . . . . . . .
    // . . . . . . .
    // . . . . . . .
    // . . . . . . .
    // . . . . . . .
    // . . . . . . .
    // . . . . . . .
    int n, d;
    cin >> n >> d;
    vector<int> v(n + 1);
    for (int i = 1; i <= n; i++) cin >> v[i];
    compress(n, v);
    int len = 1;
    while (len <= n) len <<= 1;
    vector<vector<int>> segtrees_rows(n + 1, vector<int>(len << 1));
    vector<vector<int>> segtrees_cols(n + 1, vector<int>(len << 1));
    for (int i = 1; i <= n; i++)
    {
        int num = v[i];
        int ans = 1;
        for (int j = i - 1; j >= max(1, i - d); j--) ans = max(ans, 1 + find_max(segtrees_rows[j], 1, num - 1, 0, 0, len - 1));
        ans = max(ans, find_max(segtrees_cols[num], 1, i - 1, 0, 0, len - 1));
        modify(segtrees_rows[i], num, ans, 0, 0, len - 1);
        modify(segtrees_cols[num], i, ans, 0, 0, len - 1);
        for (int j = num + 1; j <= n; j++)
        {
            ans = find_max(segtrees_cols[j], i - d, i - 1, 0, 0, len - 1);
            modify(segtrees_rows[i], j, ans, 0, 0, len - 1);
            modify(segtrees_cols[j], i, ans, 0, 0, len - 1);
        }
    }
    cout << find_max(segtrees_rows[n], 1, n, 0, 0, len - 1);

    return 0;
}

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