Submission #1204505

#	Time	Username	Problem	Language	Result	Execution time	Memory
1204505		sunflower	Financial Report (JOI21_financial)	C++17	0 / 100	17 ms	1608 KiB

Main

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define MASK(x) (1LL << (x))
#define BIT(x, i) (((x) >> (i)) & 1)
#define SZ(x) ((int) (x).size())
#define ALL(a) (a).begin(), (a).end()
#define FOR(i, a, b) for (int i = (a), _b = (b); i <= _b; ++i)
#define FORD(i, a, b) for (int i = (a), _b = (b); i >= _b; --i)
#define debug(x) cout << "[" << #x << " = " << (x) << "]" << endl

#define left    __left
#define right   __right
#define prev    __prev
#define fi      first
#define se      second

template <class X, class Y>
    bool maximize(X &x, Y y) {
        if (x < y) return x = y, true;
        else return false;
    }

template <class X, class Y>
    bool minimize(X &x, Y y) {
        if (x > y) return x = y, true;
        else return false;
    }

int n, maxRange;

#define MAX_N 300'300
int a[MAX_N + 7];

namespace subtask1 {
    bool check() {
        return (n <= 20);
    }

    int ids[25], cnt_ids = 0;

    void solve() {
        int ans = 0;
        FOR(mask, 1, MASK(n) - 1) {
            bool ok = true;
            cnt_ids = 0;
            FOR(i, 0, n - 1) if (BIT(mask, i)) {
                if (cnt_ids > 0) {
                    if (i - ids[cnt_ids] > maxRange) {ok = false; break;}
                }
                ids[++cnt_ids] = i + 1;
            }
            if (!ok) continue;

            int res = 1, ma = a[ids[1]];
            FOR(i, 2, cnt_ids) {
                if (a[ids[i]] > ma) {
                    ++res;
                    ma = a[ids[i]];
                }
            }

            maximize(ans, res);
        }

        cout << ans;
    }
}

int main() {
    ios_base::sync_with_stdio(false);cin.tie(nullptr);
    cin >> n >> maxRange;
    FOR(i, 1, n) cin >> a[i];

    if (subtask1 :: check()) return subtask1 :: solve(), 0;

    return 0;
}

/* Discipline - Calm */

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